1. A high-temperature sterilization control method of an air conditioner is characterized by comprising the following steps:

after receiving a high-temperature sterilization instruction, acquiring a temperature value of the indoor heat exchanger;

offsetting the temperature value of the indoor heat exchanger to obtain an offset temperature value of the indoor heat exchanger;

adjusting the rotating speed of an indoor motor according to the temperature value of the indoor heat exchanger so as to maintain the temperature value of the indoor heat exchanger within a preset sterilization temperature interval;

and adjusting the frequency of a compressor, the opening degree of an electronic expansion valve and the rotating speed of an outdoor motor according to the bias temperature value of the indoor heat exchanger so as to maintain the bias temperature value of the indoor heat exchanger within a sterilization bias temperature interval.

2. The method for controlling high-temperature sterilization of an air conditioner according to claim 1, wherein the offsetting the temperature value of the indoor heat exchanger to obtain an offset temperature value of the indoor heat exchanger comprises:

determining an offset adjustment value according to an upper limit value of the sterilization temperature interval, an overload temperature protection value of the air conditioner and a condensation temperature value corresponding to the maximum condensation pressure of the air conditioner;

and taking the difference value between the temperature value of the indoor heat exchanger and the offset adjustment value as the offset temperature value of the indoor heat exchanger.

3. The method of claim 2, wherein the offset adjustment value is greater than a difference between an upper limit value of the sterilization temperature interval and the overload temperature protection value and is less than a difference between the condensation temperature value and the overload temperature protection value.

4. A high-temperature sterilization control method of an air conditioner according to any one of claims 1-3, wherein the sterilization bias temperature zone is determined according to the sterilization temperature zone.

5. A method for controlling high-temperature sterilization for an air conditioner according to claim 4, wherein a difference between a lower limit value of the sterilization temperature interval and the offset adjustment value is set as a lower limit value of the sterilization offset temperature interval, and a difference between an upper limit value of the sterilization temperature interval and the offset adjustment value is set as an upper limit value of the sterilization offset temperature interval.

6. A high-temperature sterilization control device of an air conditioner is characterized by comprising:

the acquisition module is used for acquiring the temperature value of the indoor heat exchanger after receiving the high-temperature sterilization instruction;

the first control module is used for carrying out offset processing on the temperature value of the indoor heat exchanger to obtain an offset temperature value of the indoor heat exchanger and regulating the rotating speed of an indoor motor according to the temperature value of the indoor heat exchanger so as to enable the temperature value of the indoor heat exchanger to be always maintained in a preset sterilization temperature interval;

and the second control module is used for adjusting the frequency of the compressor, the opening of the electronic expansion valve and the rotating speed of the outdoor motor according to the bias temperature value of the indoor heat exchanger so as to enable the bias temperature value of the indoor heat exchanger to be always maintained in a sterilization bias temperature interval.

7. The apparatus as claimed in claim 6, wherein the first control module is specifically configured to:

determining an offset adjustment value according to an upper limit value of the sterilization temperature interval, an overload temperature protection value of the air conditioner and a condensation temperature value corresponding to the maximum condensation pressure of the air conditioner;

and taking the difference value between the temperature value of the indoor heat exchanger and the offset adjustment value as the offset temperature value of the indoor heat exchanger.

8. The apparatus of claim 7, wherein the offset adjustment value is greater than a difference between an upper limit value of the sterilization temperature section and the overload temperature protection value, and is less than a difference between the condensation temperature value and the overload temperature protection value.

9. A high-temperature sterilization control apparatus of an air conditioner according to claim 6,

the first control module is configured as an indoor unit controller of the air conditioner;

the second control module is configured as an outdoor unit controller of the air conditioner.

10. An air conditioner, comprising:

a high-temperature sterilizing control apparatus of an air conditioner as claimed in claims 6-9; or

A processor, a memory, and a pasteurization control program for an air conditioner stored on the memory and executable on the processor, the pasteurization control program for an air conditioner implementing the pasteurization control method for an air conditioner according to any one of claims 1 to 5 when executed by the processor.

11. A computer-readable storage medium, wherein a high-temperature sterilization control program of an air conditioner is stored on the computer-readable storage medium, and when executed by a processor, implements the high-temperature sterilization control method of the air conditioner according to any one of claims 1 to 5.

Background

Along with the health requirements of users on the air conditioner in the use process, the high-temperature sterilization function of the air conditioner becomes the focus of attention of related technical personnel, the high-temperature sterilization function of the air conditioner is to inactivate germs and viruses by utilizing the high temperature of an indoor heat exchanger, and when the temperature of the indoor heat exchanger exceeds 56 ℃ and lasts for 30 minutes, the viruses can be inactivated, so that the high-temperature sterilization function is to control the temperature of a coil pipe of the indoor heat exchanger to be maintained above 56 ℃. In addition, the maximum sterilization condensation temperature cannot exceed the maximum condensation pressure 4.15MPa specified by the compressor, the corresponding condensation temperature is 64 ℃, and different refrigerants have different specified maximum condensation pressure boundaries and corresponding condensation temperatures.

However, 56 ℃ and above is a general heating overload unloading temperature interval, if the temperature value of the indoor heat exchanger is controlled in a sterilization temperature interval, the heating overload protection point of the air conditioner is just in the sterilization interval, so that the overload protection frequency reduction of the refrigerating system is triggered, the temperature of the coil pipe of the indoor heat exchanger is reduced, the temperature value of the indoor heat exchanger is lower than the lowest sterilization temperature value, the sterilization effect is reduced, and even no sterilization effect exists, and the two are mutually contradictory.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art.

Therefore, an object of the present invention is to provide a sterilization control method for an air conditioner, the method obtains an offset temperature value of an indoor heat exchanger by offsetting a temperature value of the indoor heat exchanger, and adjusts a rotation speed of an indoor motor, a frequency of a compressor, an opening degree of an electronic expansion valve, and a rotation speed of an outdoor motor according to the temperature value of the indoor heat exchanger and the offset temperature value of the indoor heat exchanger, respectively, so that the temperature value of the indoor heat exchanger and the offset temperature value of the indoor heat exchanger are maintained in respective corresponding temperature ranges, thereby controlling the temperature value of the indoor heat exchanger in a sterilization temperature range, preventing an outdoor unit from triggering an overload protection and frequency reduction of a refrigeration system, ensuring a high-temperature sterilization effect of the air conditioner, and improving the stability of high-temperature sterilization without increasing cost.

Therefore, a second object of the present invention is to provide a high temperature sterilization control device for an air conditioner.

To this end, a third object of the present invention is to provide an air conditioner.

To this end, a fourth object of the invention is to propose a computer-readable storage medium.

In order to achieve the above object, an embodiment of a first aspect of the present invention proposes a sterilization control method of an air conditioner, the method including: after receiving a high-temperature sterilization instruction, acquiring a temperature value of the indoor heat exchanger; offsetting the temperature value of the indoor heat exchanger to obtain an offset temperature value of the indoor heat exchanger; adjusting the rotating speed of an indoor motor according to the temperature value of the indoor heat exchanger so as to maintain the temperature value of the indoor heat exchanger within a preset sterilization temperature interval; and adjusting the frequency of a compressor, the opening degree of an electronic expansion valve and the rotating speed of an outdoor motor according to the bias temperature value of the indoor heat exchanger so as to maintain the bias temperature value of the indoor heat exchanger within a sterilization bias temperature interval.

According to the sterilization control method of the air conditioner, the temperature value of the indoor heat exchanger is subjected to offset processing to obtain the offset temperature value of the indoor heat exchanger, the rotating speed of the indoor motor is adjusted according to the temperature value of the indoor heat exchanger, so that the temperature value of the indoor heat exchanger is in a sterilization temperature interval, the frequency of the compressor, the opening degree of the electronic expansion valve and the rotating speed of the outdoor motor are adjusted according to the offset temperature value of the indoor heat exchanger, the offset temperature value of the indoor heat exchanger is in the sterilization offset temperature interval, namely, the temperature value of the indoor heat exchanger and the offset temperature value of the indoor heat exchanger are maintained in different temperature intervals, therefore, the temperature value of the indoor heat exchanger can be controlled in the sterilization temperature interval, the phenomenon that the outdoor unit triggers the refrigeration system to overload protection and reduce the frequency can be avoided, and the high-temperature sterilization effect of the air conditioner is ensured, the stability of high-temperature sterilization is improved without increasing the cost.

In some embodiments, the offsetting the temperature value of the indoor heat exchanger to obtain an offset temperature value of the indoor heat exchanger includes: determining an offset adjustment value according to an upper limit value of the sterilization temperature interval, an overload temperature protection value of the air conditioner and a condensation temperature value corresponding to the maximum condensation pressure of the air conditioner; and taking the difference value between the temperature value of the indoor heat exchanger and the offset adjustment value as the offset temperature value of the indoor heat exchanger.

In some embodiments, the offset adjustment value is greater than a difference between an upper limit value of the sterilization temperature interval and the overload temperature protection value and less than a difference between the condensation temperature value and the overload temperature protection value.

In some embodiments, the sterilization bias temperature interval is determined from the sterilization temperature interval.

In some embodiments, a difference between a lower limit value of the sterilization temperature interval and the offset adjustment value is used as the lower limit value of the sterilization offset temperature interval, and a difference between an upper limit value of the sterilization temperature interval and the offset adjustment value is used as the upper limit value of the sterilization offset temperature interval.

In order to achieve the above object, an embodiment of a second aspect of the present invention provides a high-temperature sterilization control apparatus of an air conditioner, the sterilization control apparatus including: the acquisition module is used for acquiring the temperature value of the indoor heat exchanger after receiving the high-temperature sterilization instruction; the first control module is used for carrying out offset processing on the temperature value of the indoor heat exchanger to obtain an offset temperature value of the indoor heat exchanger and regulating the rotating speed of an indoor motor according to the temperature value of the indoor heat exchanger so as to enable the temperature value of the indoor heat exchanger to be always maintained in a preset sterilization temperature interval; and the second control module is used for adjusting the frequency of the compressor, the opening of the electronic expansion valve and the rotating speed of the outdoor motor according to the bias temperature value of the indoor heat exchanger so as to enable the bias temperature value of the indoor heat exchanger to be always maintained in a sterilization bias temperature interval.

According to the high-temperature sterilization control device of the air conditioner, the temperature value of the indoor heat exchanger is subjected to offset processing to obtain the offset temperature value of the indoor heat exchanger, the rotating speed of the indoor motor is adjusted according to the temperature value of the indoor heat exchanger, so that the temperature value of the indoor heat exchanger is in the sterilization temperature interval, the frequency of the compressor, the opening degree of the electronic expansion valve and the rotating speed of the outdoor motor are adjusted according to the offset temperature value of the indoor heat exchanger, the offset temperature value of the indoor heat exchanger is in the sterilization offset temperature interval, namely, the temperature value of the indoor heat exchanger and the offset temperature value of the indoor heat exchanger are maintained in different temperature intervals, therefore, the temperature value of the indoor heat exchanger can be controlled in the sterilization temperature interval, the phenomenon that the outdoor unit triggers the refrigeration system to overload protection and reduce the frequency can be avoided, and the high-temperature sterilization effect of the air conditioner is ensured, the stability of high-temperature sterilization is improved without increasing the cost.

In some embodiments, the first control module is specifically configured to: determining an offset adjustment value according to an upper limit value of the sterilization temperature interval, an overload temperature protection value of the air conditioner and a condensation temperature value corresponding to the maximum condensation pressure of the air conditioner; and taking the difference value between the temperature value of the indoor heat exchanger and the offset adjustment value as the offset temperature value of the indoor heat exchanger.

In some embodiments, the offset adjustment value is greater than a difference between an upper limit value of the sterilization temperature interval and the overload temperature protection value and less than a difference between the condensation temperature value and the overload temperature protection value.

In some embodiments, the first control module is configured as an indoor unit controller of the air conditioner; the second control module is configured as an outdoor unit controller of the air conditioner.

To achieve the above object, an embodiment of a third aspect of the present invention proposes an air conditioner including: the high-temperature sterilization control device of the air conditioner in the embodiment; the high-temperature sterilization control program of the air conditioner realizes the high-temperature sterilization control method of the air conditioner according to the embodiment when being executed by the processor.

According to the air conditioner provided by the embodiment of the invention, the offset temperature value of the indoor heat exchanger is obtained by offsetting the temperature value of the indoor heat exchanger, the rotating speed of the indoor motor is adjusted according to the temperature value of the indoor heat exchanger, so that the temperature value of the indoor heat exchanger is in a sterilization temperature interval, the frequency of the compressor, the opening degree of the electronic expansion valve and the rotating speed of the outdoor motor are adjusted according to the offset temperature value of the indoor heat exchanger, so that the offset temperature value of the indoor heat exchanger is in the sterilization offset temperature interval, namely, the temperature value of the indoor heat exchanger and the offset temperature value of the indoor heat exchanger are maintained in different temperature intervals, therefore, the temperature value of the indoor heat exchanger can be controlled in the sterilization temperature interval, the phenomenon that the outdoor unit triggers a refrigeration system to overload protection and reduce the frequency can be avoided, the high-temperature sterilization effect of the air conditioner is ensured, and the cost is not increased, the stability of high-temperature sterilization is improved.

To achieve the above object, an embodiment of a fourth aspect of the present invention proposes a computer-readable storage medium having stored thereon a pasteurization control program for an air conditioner, which, when executed by a processor, implements the pasteurization control method for the air conditioner as described in the above embodiment.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a flowchart of a high-temperature sterilization control method of an air conditioner according to an embodiment of the present invention;

fig. 2 is a block diagram of a high-temperature sterilization control apparatus of an air conditioner according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.

First, the communication principle of the indoor and outdoor units of the outdoor unit of the air conditioner will be briefly described. An air conditioner, such as a split type air conditioner, generally includes an indoor unit, an outdoor unit, a connection pipe, and a connection line, wherein the connection line includes a communication line. The indoor unit controller sends a detected frame data packet to the outdoor unit controller in a fixed communication period, and meanwhile, receives a frame data packet sent by the outdoor unit controller. Specifically, the data packet sent by the indoor unit controller to the outdoor unit controller may include data such as an indoor environment temperature, an indoor heat exchanger coil temperature, humidity, a set temperature, and a gear of an indoor motor; the data packet sent by the outdoor unit controller to the indoor unit controller can comprise data such as outdoor environment temperature, outdoor heat exchanger coil temperature, exhaust temperature, compressor frequency and expansion valve opening degree. Generally, data of a receiving side and data of a transmitting side are the same, however, since the receiving side and the transmitting side have a delay of a communication cycle, for example, a communication cycle for transmitting and receiving one frame of data packet is 5s, in this case, data obtained by a side receiving the data is delayed by 5s than that of a side transmitting the data.

Based on the asynchronism of the communication between the indoor unit controller and the outdoor unit controller, the high-temperature sterilization control method of the air conditioner in the embodiment of the invention processes the temperature value of the indoor heat exchanger during high-temperature sterilization, so that the temperature value of the indoor heat exchanger is not equal to the temperature value of the indoor heat exchanger received by the outdoor unit controller, and the rotating speed of the indoor motor, the frequency of the compressor, the opening degree of the electronic expansion valve and the rotating speed of the outdoor motor are respectively regulated according to the temperature value of the indoor heat exchanger and the processed temperature value of the indoor heat exchanger, so that the outdoor unit cannot trigger overload protection and frequency reduction while the temperature value of the indoor heat exchanger is maintained in a sterilization interval, and the compressor runs in a safe pressure interval, thereby ensuring the reliability of the running of a refrigeration system while ensuring the high-temperature sterilization effect.

Hereinafter, a method for controlling high-temperature sterilization of an air conditioner according to an embodiment of the present invention will be described.

The method for controlling high-temperature sterilization of an air conditioner according to an embodiment of the present invention will be described with reference to fig. 1, and as shown in fig. 1, the method for controlling high-temperature sterilization of an air conditioner according to an embodiment of the present invention includes at least steps S1 through S4.

And step S1, after receiving the high-temperature sterilization instruction, acquiring the temperature value of the indoor heat exchanger.

In an embodiment, the temperature value of the indoor heat exchanger is, for example, denoted as Tc _ in, after receiving the high-temperature sterilization instruction, the temperature sensor of the indoor heat exchanger detects the temperature value Tc _ in of the indoor heat exchanger, and the indoor unit controller receives the temperature value Tc _ in of the indoor heat exchanger. For example, a user may send a high-temperature sterilization instruction through, but not limited to, an air conditioner remote controller or a related key on an operation interface on an air conditioner body, after receiving the high-temperature sterilization instruction, the air conditioner detects a temperature value Tc _ in of the indoor heat exchanger, and sends the temperature value Tc _ in of the indoor heat exchanger to the indoor unit controller, and the indoor unit controller obtains the temperature value Tc _ in of the indoor heat exchanger.

And step S2, carrying out offset processing on the temperature value of the indoor heat exchanger to obtain the offset temperature value of the indoor heat exchanger.

In the embodiment of the present invention, the offset temperature value of the indoor heat exchanger is a temperature value obtained by offsetting the temperature value Tc _ in of the indoor heat exchanger, and specifically, the temperature value Tc _ in of the indoor heat exchanger is generally the same as the temperature value Tc _ out of the indoor heat exchanger received by the outdoor unit controller.

For example, the temperature value of the indoor heat exchanger received by the outdoor unit controller is, for example, denoted as Tc _ out, and after the temperature value Tc _ in of the indoor heat exchanger is subjected to the offsetting process, the temperature value Tc _ out of the indoor heat exchanger received by the outdoor unit controller is different from the temperature value Tc _ in of the indoor heat exchanger obtained by the indoor unit controller. For example, if the temperature value Tc _ in of the indoor heat exchanger acquired by the indoor unit controller is 42 ℃, the temperature value of the indoor heat exchanger is biased to obtain a biased temperature value of the indoor heat exchanger, and if the obtained biased temperature value of the indoor heat exchanger is 36 ℃, the temperature value Tc _ out of the indoor heat exchanger received by the outdoor unit controller is 36 ℃. Accordingly, the temperature value Tc _ in of the indoor heat exchanger and the temperature value Tc _ out of the indoor heat exchanger received by the outdoor unit controller are in different temperature ranges.

And step S3, adjusting the rotating speed of the indoor motor according to the temperature value of the indoor heat exchanger so as to maintain the temperature value of the indoor heat exchanger within a preset sterilization temperature interval.

In the embodiment, the interval composed of the upper sterilization temperature value and the lower sterilization temperature value defined in advance is referred to as a sterilization temperature interval. The lower limit of the sterilization temperature interval is designated as Tc1, and the upper limit of the sterilization temperature interval is designated as Tc 2. That is, when the temperature value Tc _ in of the indoor heat exchanger is between Tc1 and Tc2, for example, Tc1 is smaller than or equal to Tc _ in is smaller than or equal to Tc2, the temperature value Tc _ in of the indoor heat exchanger is considered to be in the sterilization temperature range, and when the temperature value of the indoor heat exchanger is in the sterilization temperature range, the high-temperature sterilization effect can be ensured. Specifically, Tc1 is determined by the minimum sterilization temperature, and is typically 56 ℃, Tc2 is determined by the maximum condensation pressure of the compressor specification, the condensation temperature corresponding to the maximum condensation pressure is, for example, denoted as Tcmax, and Tc2 is generally set to be smaller than Tcmax, for example, 64 ℃, and the corresponding Tc2 is, for example, 60 ℃ in view of the hysteresis of the control and the stability of the refrigeration system when it is protected.

After the temperature value Tc _ in of the indoor heat exchanger is determined, the temperature value Tc _ in of the indoor heat exchanger is adjusted by controlling the rotating speed of the indoor motor, such as controlling the rotating speed of the indoor motor to increase, decrease or not change, so that the temperature value Tc _ in of the indoor heat exchanger is maintained in a preset sterilization temperature range, for example, Tc _ in is greater than or equal to 56 ℃ and less than or equal to 60 ℃. Thereby, the high temperature sterilization effect of the air conditioner is ensured.

And step S4, adjusting the frequency of the compressor, the opening degree of the electronic expansion valve and the rotating speed of the outdoor motor according to the bias temperature value of the indoor heat exchanger so as to maintain the bias temperature value of the indoor heat exchanger in the sterilization bias temperature interval.

In the embodiment, the sterilization bias temperature section is a sterilization temperature section subjected to bias processing, and the sterilization bias temperature section can be obtained by performing bias processing on the sterilization temperature section, and it can be understood that the sterilization temperature section does not overlap with the sterilization bias temperature section. For example, when the sterilization temperature range is 56-60 ℃, the sterilization bias temperature range is 50-54 ℃. Therefore, the temperature value of the indoor heat exchanger can be controlled within the sterilization temperature range, the outdoor unit can be prevented from triggering the overload protection frequency reduction of the refrigerating system, the high-temperature sterilization effect of the air conditioner is guaranteed, and the high-temperature sterilization stability is improved.

Specifically, after the indoor unit controller performs offset processing on the temperature value of the indoor heat exchanger to obtain an offset temperature value of the indoor heat exchanger, and the offset temperature value of the indoor heat exchanger is sent to the outdoor unit controller, the outdoor unit controller does not know that the received temperature value Tc _ out of the indoor heat exchanger (namely, the offset temperature value of the indoor heat exchanger) is not equal to the temperature value Tc _ in of the indoor heat exchanger, so that when the outdoor unit controller performs control according to the received temperature value Tc _ out of the indoor heat exchanger, the outdoor unit controller actually performs control according to the received offset temperature value of the indoor heat exchanger, and at the moment, the frequency of the compressor is controlled to be increased, decreased or kept unchanged; the opening degree of the electronic expansion valve is increased, reduced or kept unchanged, and the rotating speed of the outdoor motor is increased, reduced or kept unchanged, so that the bias temperature value of the indoor heat exchanger is controlled to be within a sterilization bias temperature range, and the outdoor unit is prevented from triggering overload and frequency reduction protection of the refrigeration system.

According to the high-temperature sterilization control method of the air conditioner, the temperature value Tc _ in of the indoor heat exchanger is subjected to offset processing to obtain the offset temperature value of the indoor heat exchanger, the rotating speed of the indoor motor is adjusted according to the temperature value of the indoor heat exchanger, the temperature value of the indoor heat exchanger is in the sterilization temperature interval, the frequency of the compressor, the opening degree of the electronic expansion valve and the rotating speed of the outdoor motor are adjusted according to the offset temperature value of the indoor heat exchanger, the offset temperature value of the indoor heat exchanger is in the sterilization offset temperature interval, namely, the temperature value Tc _ in of the indoor heat exchanger and the offset temperature value of the indoor heat exchanger are maintained in different temperature intervals, so that the temperature value Tc _ in of the indoor heat exchanger can be controlled in the sterilization temperature interval, and the phenomenon that an outdoor unit triggers a refrigeration system to overload protection and reduce the frequency can be avoided, the high-temperature sterilization effect of the air conditioner is ensured, and the high-temperature sterilization stability of the air conditioner is improved without increasing the cost.

In some embodiments, offsetting the temperature value of the indoor heat exchanger to obtain an offset temperature value of the indoor heat exchanger includes: determining an offset adjustment value according to an upper limit value of a sterilization temperature interval, an overload temperature protection value of the air conditioner and a condensation temperature value corresponding to the maximum condensation pressure of the air conditioner; and taking the difference value of the temperature value of the indoor heat exchanger and the offset adjustment value as the offset temperature value of the indoor heat exchanger.

In the embodiment, the overload temperature protection value of the air conditioner is, for example, denoted as Tc _ Pd, and when Tc _ out ≧ Tc _ Pd, the compressor frequency needs to be controlled to decrease the condensing temperature of the refrigeration system. In addition, in order to ensure the output of heating capacity and keep higher outlet air temperature, the overload temperature protection value Tc _ Pd of the air conditioner is generally set within the range of 54-60 ℃, and it can be seen that the temperature range of Tc _ Pd is overlapped with the sterilization temperature range, that is, the heating overload protection point of the air conditioner is just in the sterilization range, and the overload frequency reduction protection of the refrigeration system is triggered. At this time, the temperature value Tc _ in of the indoor heat exchanger is offset to obtain the offset temperature value of the indoor heat exchanger, and the offset temperature value of the indoor heat exchanger is sent to the outdoor unit controller, the outdoor unit controller receives the temperature value Tc _ out of the indoor heat exchanger equal to the offset temperature value of the indoor heat exchanger, and at this time, the outdoor unit controller controls the outdoor unit controller to control the outdoor unit according to the offset temperature value of the indoor heat exchanger, the frequency of the compressor, the opening degree of the electronic expansion valve and the rotating speed of the outdoor motor are regulated to maintain the bias temperature value of the indoor heat exchanger in the sterilization bias temperature range, so that Tc _ out is also maintained in the sterilization bias temperature range, because the sterilization bias temperature interval is not coincident with the sterilization temperature interval, the heating overload protection point of the air conditioner is not in the sterilization temperature interval, therefore, the air conditioner can avoid the outdoor unit from triggering the overload and frequency reduction function of the refrigerating system while ensuring the sterilizing effect of the air conditioner.

Specifically, when the temperature value Tc _ in of the indoor heat exchanger is offset-processed, it is necessary to adjust the temperature value Tc _ in according to an offset adjustment value, which is expressed as Δ T for example, in order to ensure the reliability and stability of the refrigeration system, the offset adjustment value Δ T needs to be set to satisfy a set condition, for example, determining an offset adjustment value delta T according to the upper limit value Tc2 of the sterilization temperature interval, the overload temperature protection value Tc _ Pd of the air conditioner and the condensation temperature value Tcmax corresponding to the maximum condensation pressure of the air conditioner, determining the offset adjustment value delta T, taking the difference value between the temperature value Tc _ in of the indoor heat exchanger and the offset adjustment value Delta T as an offset temperature value, for example, the offset temperature value of the indoor heat exchanger is Tc _ in- Δ T, and the offset temperature value is transmitted to the outdoor unit controller, the outdoor unit controller receives the temperature value Tc _ out of the indoor heat exchanger as Tc _ in _ Δ T. The temperature value Tc _ in of the indoor heat exchanger is adjusted by determining the offset adjustment value Delta T, so that the accuracy of determining the offset temperature value of the indoor heat exchanger can be improved.

Further, the offset adjustment value is larger than the difference value between the upper limit value of the sterilization temperature interval and the overload temperature protection value and is smaller than the difference value between the condensation temperature value and the overload temperature protection value.

In an embodiment, the offset adjustment value Δ T needs to be determined to satisfy a predetermined condition, on one hand, a difference between the upper limit value Tc2 of the sterilization temperature interval and the offset adjustment value Δ T needs to be smaller than the overload temperature protection value Tc _ Pd of the air conditioner, for example, Tc2- Δ T < Tc _ Pd, that is, the offset adjustment value Δ T is greater than a difference between the upper limit value Tc2 of the sterilization temperature interval and the overload temperature protection value, for example, Δ T > Tc2-Tc _ Pd, so that the temperature value Tc _ out of the indoor heat exchanger received by the outdoor unit controller is Tc _ in- Δ T < Tc _ Pd, thereby controlling the temperature value Tc _ in of the indoor heat exchanger in the sterilization temperature interval and simultaneously reducing the temperature value Tc _ in to the sterilization temperature interval, for example, Tc1 ≦ Tc _ in ≦ Tc _ 2, and avoiding triggering the overload protection of the refrigeration system.

On the other hand, the difference between the condensation temperature value Tcmax and the overload temperature protection value Tc _ Pd must be greater than the offset adjustment value Δ T, for example, Tcmax-Tc _ Pd > - Δ T, so that the temperature value Tc _ in of the indoor heat exchanger is Tc _ out + Δ T < Tcmax, thereby avoiding the problem of reducing the operation reliability of the compressor due to the fact that the actual temperature value of the indoor heat exchanger exceeds the condensation temperature value Tcmax corresponding to the maximum condensation pressure of the refrigeration system due to the excessively large offset adjustment value Δ T. By setting the offset adjustment value delta T, the temperature value Tc _ in of the indoor heat exchanger can be controlled within the sterilization temperature range, and the fact that the actual temperature value of the indoor heat exchanger exceeds the condensation temperature value corresponding to the maximum condensation pressure of the refrigeration system can be avoided, so that the reasonability of the offset value of the indoor heat exchanger is improved.

In some embodiments, the sterilization bias temperature interval is determined based on the sterilization temperature interval. It can be understood that the sterilization bias temperature interval can be determined according to the bias adjustment value Δ T, after the sterilization temperature interval is determined, the bias sterilization temperature interval is determined accordingly, and by determining the sterilization bias temperature interval, the bias temperature value of the indoor heat exchanger can be maintained in the sterilization bias temperature interval, that is, the temperature value Tc _ out of the indoor heat exchanger received by the outdoor unit controller is maintained in the sterilization bias temperature interval, so that the overload frequency reduction protection of the refrigeration system triggered by the overhigh Tc _ out is avoided.

In some embodiments, the difference between the lower limit value of the sterilization temperature interval and the offset adjustment value is used as the lower limit value of the sterilization offset temperature interval, and the difference between the upper limit value of the sterilization temperature interval and the offset adjustment value is used as the upper limit value of the sterilization offset temperature interval. For example, Tc1- Δ T is used as the lower limit value of the sterilization bias temperature interval, Tc2- Δ T is used as the upper limit value of the sterilization bias temperature interval, it can be understood that after the outdoor unit controller receives the temperature value Tc _ out of the indoor heat exchanger, the Tc _ out is equal to the bias temperature value of the indoor heat exchanger, so that the outdoor unit controller adjusts the frequency of the compressor, the opening degree of the electronic expansion valve and the rotating speed of the outdoor motor according to the bias temperature value of the indoor heat exchanger to maintain the bias temperature value of the indoor heat exchanger within the sterilization bias temperature interval, for example, the bias temperature value of the indoor heat exchanger is controlled within the sterilization bias temperature interval which is greater than or equal to Tc1- Δ T and less than or equal to Tc2- Δ T, that is, the Tc _ out is controlled within the sterilization bias temperature interval, for example, Tc1- Δ T is less than or equal to Tc _ out and less than or equal to Tc2- Δ T, and after the air conditioner completes high-temperature sterilization, the indoor unit controller directly sends the original value of the temperature value Tc _ in of the detected indoor heat exchanger, namely, the temperature value Tc _ in of the indoor heat exchanger which is not subjected to bias treatment to the outdoor unit controller.

The following describes a high-temperature sterilization control process of an air conditioner by taking a specific embodiment as an example.

In the following examples, the relevant parameters are set as follows: the upper limit value Tc2 of the sterilization temperature interval is 60 ℃, the lower limit value Tc1 of the sterilization temperature interval is 56 ℃, the condensation temperature value Tcmax is 64 ℃, the overload temperature protection value Tc _ Pd is 56 ℃, and the communication period of the internal and external controllers is 5 s. The offset adjustment value Δ T > Tc2-Tc _ Pd is equal to 60-56, 4 ℃, and the offset adjustment value Δ T < Tcmax-Tc _ Pd is equal to 64-56, 8 ℃, in this embodiment, the offset adjustment value Δ T is equal to 6 ℃.

After the air conditioner receives the high-temperature sterilization instruction, the temperature value Tc _ in of the indoor heat exchanger is detected to be 42 ℃, 6 ℃ is subtracted, the offset temperature value of the indoor heat exchanger is obtained to be 36 ℃, namely 36 ℃ is sent to the outdoor unit controller, and after 5s, the temperature value Tc _ out of the indoor heat exchanger received by the outdoor unit controller is 36 ℃. The indoor machine controller controls the rotating speed of the indoor motor, and Tc _ in is controlled to be within the range of 56 ℃ to 60 ℃. The outdoor machine controller controls the frequency of the compressor, the opening degree of the expansion valve and the gear of the outdoor motor, and controls Tc _ out to be within a temperature range of more than or equal to 50 ℃ and less than or equal to 54 ℃, namely a temperature range obtained by subtracting a value delta T from Tc1 and Tc 2. Therefore, even if Tc _ in is controlled to be equal to the maximum sterilization temperature Tc2 which is 60 ℃, Tc _ out which is Tc _ in-DeltaT which is 60-6 which is 54 ℃ and Tc _ Pd which is 56 ℃, overload frequency reduction protection is not triggered; in addition, even if Tc _ out is controlled to be equal to the refrigerating system condensation temperature overload protection value Tc _ Pd of 56 ℃, the actual indoor heat exchanger temperature value Tc _ in of Tc _ out +. DELTA.T of 56+6 of 62 ℃ < Tcmax of 64 ℃, and the reliability of the refrigerating system is still ensured. After the high-temperature sterilization mode is finished, the normal heating is recovered at the moment, and the indoor unit controller directly sends the original value of the temperature value Tc _ in of the detected indoor heat exchanger to the outdoor unit controller.

According to the high-temperature sterilization control method of the air conditioner, the temperature value Tc _ in of the indoor heat exchanger is subjected to offset processing to obtain the offset temperature value of the indoor heat exchanger, the rotating speed of the indoor motor is adjusted according to the temperature value of the indoor heat exchanger, the temperature value of the indoor heat exchanger is enabled to be in the sterilization temperature interval, the frequency of the compressor, the opening degree of the electronic expansion valve and the rotating speed of the outdoor motor are adjusted according to the offset temperature value of the indoor heat exchanger, the offset temperature value of the indoor heat exchanger is enabled to be in the sterilization offset temperature interval, therefore, the temperature value Tc _ in of the indoor heat exchanger and the offset temperature value of the indoor heat exchanger are maintained in different temperature intervals, the overload heating protection point of the air conditioner is enabled not to be in the sterilization temperature interval, and therefore, the temperature value Tc _ in of, the overload protection and frequency reduction of the outdoor unit triggering the refrigerating system can be avoided, and the high-temperature sterilization stability is improved without increasing the cost.

A high-temperature sterilization control apparatus of an air conditioner according to an embodiment of the second aspect of the present invention will be described with reference to fig. 2.

Fig. 2 is a block diagram of a high-temperature sterilization control apparatus of an air conditioner according to an embodiment of the present invention. As shown in fig. 2, the high temperature sterilization control apparatus 2 of the air conditioner according to the embodiment of the present invention includes an obtaining module 20, a first control module 21, and a second control module 22.

The acquisition module 20 is configured to acquire a temperature value of the indoor heat exchanger after receiving the high-temperature sterilization instruction; the first control module 21 is configured to perform offset processing on the temperature value of the indoor heat exchanger to obtain an offset temperature value of the indoor heat exchanger, and adjust the rotation speed of the indoor motor according to the temperature value of the indoor heat exchanger, so that the temperature value of the indoor heat exchanger is always maintained within a preset sterilization temperature range; the second control module 22 is configured to adjust the frequency of the compressor, the opening of the electronic expansion valve, and the rotation speed of the outdoor motor according to the offset temperature value of the indoor heat exchanger, so that the offset temperature value of the indoor heat exchanger is always maintained within the sterilization offset temperature range.

According to the sterilization control device 2 of the air conditioner of the embodiment of the invention, the temperature value Tc _ in of the indoor heat exchanger is subjected to offset processing to obtain the offset temperature value of the indoor heat exchanger, the rotating speed of the indoor motor is adjusted according to the temperature value of the indoor heat exchanger, so that the temperature value of the indoor heat exchanger is in the sterilization temperature interval, the frequency of the compressor, the opening degree of the electronic expansion valve and the rotating speed of the outdoor motor are adjusted according to the offset temperature value of the indoor heat exchanger, the offset temperature value of the indoor heat exchanger is in the sterilization offset temperature interval, namely, the temperature value Tc _ in of the indoor heat exchanger and the offset temperature value of the indoor heat exchanger are maintained in different temperature intervals, therefore, the temperature value Tc _ in of the indoor heat exchanger can be controlled in the sterilization temperature interval, and the phenomenon that the outdoor unit triggers the refrigeration system to overload protection and reduce the frequency can be avoided, the high-temperature sterilization effect of the air conditioner is ensured, and the high-temperature sterilization stability of the air conditioner is improved without increasing the cost.

In some embodiments, the first control module 21 is specifically configured to determine an offset adjustment value according to an upper limit value of the sterilization temperature interval, an overload temperature protection value of the air conditioner, and a condensation temperature value corresponding to a maximum condensation pressure of the air conditioner; and taking the difference value of the temperature value of the indoor heat exchanger and the offset adjustment value as the offset temperature value of the indoor heat exchanger.

Specifically, when the temperature value Tc _ in of the indoor heat exchanger is offset-processed, it is necessary to adjust the temperature value Tc _ in according to an offset adjustment value, which is expressed as Δ T for example, in order to ensure the reliability and stability of the refrigeration system, the offset adjustment value Δ T needs to be set to satisfy a set condition, for example, determining an offset adjustment value delta T according to the upper limit value Tc2 of the sterilization temperature interval, the overload temperature protection value Tc _ Pd of the air conditioner and the condensation temperature value Tcmax corresponding to the maximum condensation pressure of the air conditioner, determining the offset adjustment value delta T, taking the difference value between the temperature value Tc _ in of the indoor heat exchanger and the offset adjustment value Delta T as an offset temperature value, for example, the offset temperature value of the indoor heat exchanger is Tc _ in- Δ T, and the offset temperature value is transmitted to the outdoor unit controller, the outdoor unit controller receives the temperature value Tc _ out of the indoor heat exchanger as Tc _ in _ Δ T. The temperature value Tc _ in of the indoor heat exchanger is adjusted by determining the offset adjustment value Delta T, so that the accuracy of determining the offset temperature value of the indoor heat exchanger can be improved.

In some embodiments, the offset adjustment value is greater than a difference between an upper limit value of the sterilization temperature interval and the overload temperature protection value and less than a difference between the condensation temperature value and the overload temperature protection value.

In an embodiment, the offset adjustment value Δ T needs to be determined to satisfy a predetermined condition, on one hand, a difference between the upper limit value Tc2 of the sterilization temperature interval and the offset adjustment value Δ T needs to be smaller than the overload temperature protection value Tc _ Pd of the air conditioner, for example, Tc2- Δ T < Tc _ Pd, that is, the offset adjustment value Δ T is greater than a difference between the upper limit value Tc2 of the sterilization temperature interval and the overload temperature protection value, for example, Δ T > Tc2-Tc _ Pd, so that the temperature value Tc _ out of the indoor heat exchanger received by the outdoor unit controller is Tc _ in- Δ T < Tc _ Pd, thereby controlling the temperature value Tc _ in of the indoor heat exchanger in the sterilization temperature interval and simultaneously reducing the temperature value Tc _ in to the sterilization temperature interval, for example, Tc1 ≦ Tc _ in ≦ Tc _ 2, and avoiding triggering the overload protection of the refrigeration system.

On the other hand, the difference between the condensation temperature value Tcmax and the overload temperature protection value Tc _ Pd must be greater than the offset adjustment value Δ T, for example, Tcmax-Tc _ Pd > - Δ T, so that the temperature value Tc _ in of the indoor heat exchanger is Tc _ out + Δ T < Tcmax, thereby avoiding the problem of reducing the operation reliability of the compressor due to the fact that the actual temperature value of the indoor heat exchanger exceeds the condensation temperature value Tcmax corresponding to the maximum condensation pressure of the refrigeration system due to the excessively large offset adjustment value Δ T. By setting the offset adjustment value delta T, the temperature value Tc _ in of the indoor heat exchanger can be controlled within the sterilization temperature range, and the fact that the actual temperature value of the indoor heat exchanger exceeds the condensation temperature value corresponding to the maximum condensation pressure of the refrigeration system can be avoided, so that the reasonability of the offset value of the indoor heat exchanger is improved.

In some embodiments, the sterilization bias temperature interval is determined based on the sterilization temperature interval. It can be understood that the sterilization bias temperature interval can be determined according to the bias adjustment value Δ T, after the sterilization temperature interval is determined, the bias sterilization temperature interval is determined accordingly, and by determining the sterilization bias temperature interval, the bias temperature value of the indoor heat exchanger can be maintained in the sterilization bias temperature interval, that is, the temperature value Tc _ out of the indoor heat exchanger received by the outdoor unit controller is maintained in the sterilization bias temperature interval, so that the overload frequency reduction protection of the refrigeration system triggered by the overhigh Tc _ out is avoided.

In some embodiments, the difference between the lower limit value of the sterilization temperature interval and the offset adjustment value is used as the lower limit value of the sterilization offset temperature interval, and the difference between the upper limit value of the sterilization temperature interval and the offset adjustment value is used as the upper limit value of the sterilization offset temperature interval. For example, Tc1- Δ T is used as the lower limit value of the sterilization bias temperature interval, Tc2- Δ T is used as the upper limit value of the sterilization bias temperature interval, it can be understood that after the outdoor unit controller receives the temperature value Tc _ out of the indoor heat exchanger, the Tc _ out is equal to the bias temperature value of the indoor heat exchanger, so that the outdoor unit controller adjusts the frequency of the compressor, the opening degree of the electronic expansion valve and the rotating speed of the outdoor motor according to the bias temperature value of the indoor heat exchanger to maintain the bias temperature value of the indoor heat exchanger within the sterilization bias temperature interval, for example, the bias temperature value of the indoor heat exchanger is controlled within the sterilization bias temperature interval which is greater than or equal to Tc1- Δ T and less than or equal to Tc2- Δ T, that is, the Tc _ out is controlled within the sterilization bias temperature interval, for example, Tc1- Δ T is less than or equal to Tc _ out and less than or equal to Tc2- Δ T, and after the air conditioner completes high-temperature sterilization, the indoor unit controller directly sends the original value of the temperature value Tc _ in of the detected indoor heat exchanger, namely, the temperature value Tc _ in of the indoor heat exchanger which is not subjected to bias treatment to the outdoor unit controller.

In some embodiments, the first control module 21 is configured as an indoor unit controller of an air conditioner; the second control module 22 is configured as an outdoor unit controller of an air conditioner. The first control module 21 and the second control module 22 transmit and receive information at a fixed communication cycle, thereby ensuring normal communication between the two.

It should be noted that a specific implementation manner of the high-temperature sterilization control device 2 of the air conditioner according to the embodiment of the present invention is similar to a specific implementation manner of the high-temperature sterilization control method of the air conditioner according to any of the above embodiments of the present invention, and reference is specifically made to the description of the method portion, and details are not repeated here in order to reduce redundancy.

According to the sterilization control device 2 of the air conditioner of the embodiment of the invention, the temperature value Tc _ in of the indoor heat exchanger is subjected to offset processing to obtain the offset temperature value of the indoor heat exchanger, the rotating speed of the indoor motor is adjusted according to the temperature value of the indoor heat exchanger, so that the temperature value of the indoor heat exchanger is in the sterilization temperature interval, the frequency of the compressor, the opening degree of the electronic expansion valve and the rotating speed of the outdoor motor are adjusted according to the offset temperature value of the indoor heat exchanger, the offset temperature value of the indoor heat exchanger is in the sterilization offset temperature interval, namely, the temperature value Tc _ in of the indoor heat exchanger and the offset temperature value of the indoor heat exchanger are maintained in different temperature intervals, therefore, the temperature value Tc _ in of the indoor heat exchanger can be controlled in the sterilization temperature interval, and the phenomenon that the outdoor unit triggers the refrigeration system to overload protection and reduce the frequency can be avoided, the high-temperature sterilization effect of the air conditioner is ensured, and the high-temperature sterilization stability of the air conditioner is improved without increasing the cost.

An air conditioner according to an embodiment of a third aspect of the present invention is described below, including: the high-temperature sterilization control device 2 of the air conditioner according to any one of the above embodiments; alternatively, the air conditioner includes: the air conditioner high-temperature sterilization control method comprises a processor, a memory and a high-temperature sterilization control program of the air conditioner, wherein the high-temperature sterilization control program of the air conditioner is stored on the memory and can run on the processor, and the high-temperature sterilization control program of the air conditioner realizes the high-temperature sterilization control method of the air conditioner in any one of the embodiments when being executed by the processor.

In this embodiment, when the air conditioner performs the high-temperature sterilization control, a specific implementation manner of the air conditioner is similar to a specific implementation manner of the high-temperature sterilization control device 2 of the air conditioner according to any of the above embodiments of the present invention, and for details, please refer to the description of the high-temperature sterilization control device 2 of the air conditioner, and details are not repeated here in order to reduce redundancy.

According to the air conditioner provided by the embodiment of the invention, the offset temperature value of the indoor heat exchanger is obtained by offsetting the temperature value Tc _ in of the indoor heat exchanger, the rotating speed of the indoor motor is adjusted according to the temperature value of the indoor heat exchanger, so that the temperature value of the indoor heat exchanger is in the sterilization temperature interval, the frequency of the compressor, the opening degree of the electronic expansion valve and the rotating speed of the outdoor motor are adjusted according to the offset temperature value of the indoor heat exchanger, the offset temperature value of the indoor heat exchanger is in the sterilization offset temperature interval, namely, the temperature value Tc _ in of the indoor heat exchanger and the offset temperature value of the indoor heat exchanger are maintained in different temperature intervals, therefore, the temperature value Tc _ in of the indoor heat exchanger can be controlled in the sterilization temperature interval, the overload protection and frequency reduction of an outdoor unit can be avoided, and the high-temperature sterilization effect of the air conditioner is ensured, the high-temperature sterilization stability of the air conditioner is improved without increasing the cost.

A computer-readable storage medium according to a fourth embodiment of the present invention is described below, the computer-readable storage medium having stored thereon a high-temperature sterilization control program of an air conditioner, the high-temperature sterilization control program of the air conditioner, when executed by a processor, implementing the high-temperature sterilization control method of the air conditioner according to any one of the above-described embodiments.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.