1. The utility model provides a variable frequency air conditioner sets for temperature adjusting device which characterized in that includes:

the system comprises a mechanical line controller and a variable frequency control panel, wherein a switching value interface is reserved on the variable frequency control panel, the variable frequency control panel is connected with the mechanical line controller through the switching value interface, the variable frequency control panel receives a mode selection instruction and a wind gear adjusting instruction which are directly sent by the mechanical line controller, and the variable frequency control panel carries out variable frequency control on the variable frequency compressor according to the received instruction.

2. The variable frequency air conditioner set temperature adjusting device according to claim 1, characterized in that:

and the mechanical wire controller executes a man-machine interaction switch instruction, a temperature setting instruction, a mode selection instruction and a wind gear adjusting instruction, and outputs the mode selection instruction and the wind gear adjusting instruction through the relay.

3. The variable frequency air conditioner set temperature adjusting device according to claim 1, characterized in that:

the variable frequency control panel comprises a driving unit and a main control unit connected with the driving unit, and the driving unit controls the operation of the variable frequency compressor according to the operation parameters of the variable frequency compressor; the main control unit is used for temperature sampling and fan load control.

4. The variable frequency air conditioner set temperature adjusting device according to claim 3, characterized in that:

the driving unit comprises an input end, an EMC filter circuit, a Boost type PFC circuit, an IPM unit, a DSP control unit and a current trunk detection circuit, the input end is connected with the EMC filter circuit, the EMC filter circuit is respectively connected with the Boost type PFC circuit and the DSP control unit, the Boost type PFC circuit is respectively connected with the IPM unit and the DSP control unit, the DSP control unit is respectively connected with the IPM unit and the current trunk detection circuit, and the current trunk detection circuit is connected with the IPM unit.

5. The variable frequency air conditioner set temperature adjusting device according to claim 4, characterized in that:

the main control unit comprises a main controller, a temperature sensor and a debugging interface, the main controller is communicated with the DSP control unit through a UART serial port, and the main controller is respectively connected with the temperature sensor, the debugging interface and the indoor motor.

6. The variable frequency air conditioner set temperature adjusting device according to claim 5, characterized in that:

the mechanical line controller comprises an MCU (microprogrammed control Unit) controller, a key unit, an LCD (liquid Crystal display) screen and a temperature sensor, wherein the MCU controller is connected with the main controller through a plurality of switching value interfaces, the MCU controller is respectively connected with the key unit, the LCD screen and the temperature sensor, and the switching value interfaces are all relay outputs.

7. The variable frequency air conditioner set temperature adjusting device according to claim 6, characterized in that:

the plurality of switching value interfaces comprise a refrigeration mode switch, a heating mode switch, an indoor fan low-grade switch, an indoor fan middle-grade switch and an indoor fan high-grade switch.

8. An adjusting method of a set temperature adjusting device of an inverter air conditioner, characterized in that the set temperature adjusting device of the inverter air conditioner adopts the set temperature adjusting device of the inverter air conditioner as claimed in any one of the claims 1 to 7, and the method comprises the following steps:

the mechanical wire controller executes a man-machine interaction switch instruction, outputs a mode selection instruction and a wind gear adjusting instruction, and receives the mode selection instruction and the wind gear adjusting instruction which are directly sent by the mechanical wire controller through the variable frequency control panel;

after the mechanical wire controller is started up in a control mode, starting up after the variable frequency control panel receives a mode starting-up instruction, and setting a set temperature Ts to be a first degree centigrade;

controlling the variable frequency air conditioner to operate, and recording the actual indoor temperature Tia after receiving a mode closing instruction sent by a mechanical wire controller;

and after the variable frequency control board receives the mode starting instruction again, if the indoor temperature Tia is the second degree centigrade when the variable frequency control board is shut down last time, the set temperature Ts is set to be the second degree centigrade by the variable frequency control board.

9. The method of claim 8, wherein:

and starting the variable frequency control panel after the variable frequency control panel is shut down again, and if the set temperature Ts during the last shut down is less than or greater than the second centigrade, reducing or increasing the set temperature value of the set temperature Ts on the basis of the set temperature Ts during the last shut down until the temperature during the shut down is equal to the indoor temperature Tia, and taking the indoor temperature Tia as the set temperature Ts.

10. The method of claim 9, wherein:

when the frequency conversion control panel sets the set temperature Ts to be the second degree centigrade, if the set temperature Ts is lower than the second degree centigrade, the set temperature Ts for starting the computer next time is set as the temperature during shutdown.

11. The method of claim 9, wherein:

if the variable frequency air conditioner is determined to be started for the first time, the variable frequency control panel operates according to the lowest set temperature Ts, and if the indoor temperature is at the first temperature, the mechanical line controller sends a stop signal, and the set temperature Ts is adjusted to the first temperature.

Background

In some areas, it is desirable to use mechanical line controllers in variable frequency air conditioning systems because of the needs of the user.

In most cases, the inverter air conditioner uses a special wired controller, uses a special communication protocol, can self-define related functions, and is developed according to the existing communication protocol, and the communication protocol is usually a non-public protocol in a manufacturer, so that the adaptability is limited. Generally, a mechanical wire controller is generally applied to a constant speed air conditioning system, and controls the operation of loads such as compressor cooling and heating, fan switching, an electromagnetic valve, electric heating and the like through an output switch.

In the inverter air-conditioning system using the mechanical wire controller, because the mechanical wire controller is not connected with the inverter air-conditioner in a data communication way, the inverter air-conditioning controller cannot directly read the set temperature Ts of the mechanical wire controller and cannot adjust the room temperature according to the actual set temperature Ts of the mechanical wire controller.

Disclosure of Invention

The invention mainly aims to provide a set temperature adjusting device of a variable frequency air conditioner, which is applied to the variable frequency air conditioner using a mechanical wire controller.

Another objective of the present invention is to provide an adjusting method of a set temperature adjusting device of an inverter air conditioner, which can estimate a set temperature Ts of the inverter air conditioner to achieve the effects of improving comfort of the inverter air conditioner and saving energy.

In order to achieve the main purpose, the set temperature adjusting device for the variable frequency air conditioner provided by the invention comprises a mechanical wire controller and a variable frequency control panel, wherein a switching value interface is reserved on the variable frequency control panel, the variable frequency control panel is connected with the mechanical wire controller through the switching value interface, the variable frequency control panel receives a mode selection instruction and a wind gear adjusting instruction which are directly sent by the mechanical wire controller, and the variable frequency control panel performs variable frequency control on a variable frequency compressor according to the received instruction.

In a further scheme, the mechanical wire controller executes a man-machine interaction switch instruction, a temperature setting instruction, a mode selection instruction and a wind gear adjusting instruction, and outputs the mode selection instruction and the wind gear adjusting instruction through a relay.

In a further scheme, the variable frequency control panel comprises a driving unit and a main control unit connected with the driving unit, and the driving unit controls the operation of the variable frequency compressor according to the operation parameters of the variable frequency compressor; the main control unit is used for temperature sampling and fan load control.

In a further scheme, the driving unit comprises an input end, an EMC filter circuit, a Boost type PFC circuit, an IPM unit, a DSP control unit, and a current shoot detection circuit, wherein the input end is connected to the EMC filter circuit, the EMC filter circuit is connected to the Boost type PFC circuit and the DSP control unit, the Boost type PFC circuit is connected to the IPM unit and the DSP control unit, the DSP control unit is connected to the IPM unit and the current shoot detection circuit, and the current shoot detection circuit is connected to the IPM unit.

In a further scheme, the main control unit comprises a main controller, a temperature sensor and a debugging interface, the main controller is communicated with the DSP control unit through a UART serial port, and the main controller is respectively connected with the temperature sensor, the debugging interface and the indoor motor.

In a further scheme, the mechanical wire controller comprises an MCU controller, a key unit, an LCD display screen and a temperature sensor, wherein the MCU controller is connected with the main controller through a plurality of switching value interfaces, the MCU controller is respectively connected with the key unit, the LCD display screen and the temperature sensor, and the switching value interfaces are all relay outputs.

In a further scheme, the plurality of switching value interfaces comprise a refrigeration mode switch, a heating mode switch, an indoor fan low-grade switch, an indoor fan middle-grade switch and an indoor fan high-grade switch.

In order to achieve the above another object, the present invention provides an adjusting method of a set temperature adjusting device of an inverter air conditioner, wherein the set temperature adjusting device of the inverter air conditioner adopts the set temperature adjusting device of the inverter air conditioner, and the method includes the following steps: the mechanical wire controller executes a man-machine interaction switch instruction, outputs a mode selection instruction and a wind gear adjusting instruction, and receives the mode selection instruction and the wind gear adjusting instruction which are directly sent by the mechanical wire controller through the variable frequency control panel; after the mechanical wire controller is started up in a control mode, starting up after the variable frequency control panel receives a mode starting-up instruction, and setting a set temperature Ts to be a first degree centigrade; controlling the variable frequency air conditioner to operate, and recording the actual indoor temperature Tia after receiving a mode closing instruction sent by a mechanical wire controller; and after the variable frequency control board receives the mode starting instruction again, if the indoor temperature Tia is the second degree centigrade when the variable frequency control board is shut down last time, the set temperature Ts is set to be the second degree centigrade by the variable frequency control board.

In a further scheme, the variable frequency control panel is started after being stopped again, if the set temperature Ts during the last stop is less than or greater than the second degree centigrade, the set temperature Ts is reduced or increased by the set temperature value on the basis of the set temperature Ts during the last stop until the temperature during the stop is equal to the indoor temperature Tia, and the indoor temperature Tia at the moment is taken as the set temperature Ts.

In a further scheme, when the set temperature Ts is set to the second degree centigrade by the variable frequency control board, if the variable frequency control board is stopped at a temperature lower than the second degree centigrade, the temperature during the stop is set to the set temperature Ts for starting up next time.

In a further scheme, if the variable frequency air conditioner is determined to be started for the first time, the variable frequency control panel operates according to the lowest set temperature Ts, and if the indoor temperature is at the first temperature, the mechanical wire controller sends a stop signal, and the set temperature Ts is adjusted to the first temperature.

Therefore, the set temperature Ts of the mechanical wire controller can be compared and calculated through the room temperature detected by the variable frequency air conditioner controller when the mechanical wire controller is shut down, and in a mechanical wire controller system matched with the variable frequency air conditioner, the set temperature Ts of the variable frequency air conditioner can be estimated and is more consistent with the actual temperature of the indoor environment, so that the temperature regulation and control of the air conditioner are more accurate, and the effects of improving the use comfort of the variable frequency air conditioner and saving energy are achieved.

Drawings

Fig. 1 is a schematic diagram of an embodiment of a variable frequency air conditioner temperature setting adjusting device according to the invention.

Fig. 2 is a schematic circuit diagram of an embodiment of a variable frequency air conditioner set temperature adjusting device according to the present invention.

Fig. 3 is a block flow diagram of an embodiment of an adjusting method of a set temperature adjusting device of an inverter air conditioner according to the present invention.

FIG. 4 is a block diagram of a cooling mode in an embodiment of an adjusting method of a set temperature adjusting device of an inverter air conditioner.

Fig. 5 is a flow chart of a heating mode in an embodiment of an adjusting method of a set temperature adjusting device of an inverter air conditioner.

The invention is further explained with reference to the drawings and the embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.

The embodiment of the device for adjusting the set temperature of the variable frequency air conditioner comprises the following steps:

referring to fig. 1 and 2, the set temperature adjusting device for a variable frequency air conditioner of the present invention includes a mechanical line controller 30 and a variable frequency control board 10, wherein a switching value interface is reserved on the variable frequency control board 10, the variable frequency control board 10 is connected to the mechanical line controller 30 through the switching value interface, the variable frequency control board 10 receives a mode selection instruction and a wind gear adjustment instruction directly sent by the mechanical line controller 30, and the variable frequency control board 10 performs variable frequency control on a variable frequency compressor according to the received instruction.

The mechanical wire controller 30 executes a human-computer interaction switch instruction, a temperature setting instruction, a mode selection instruction, and a wind gear adjustment instruction, and outputs the mode selection instruction and the wind gear adjustment instruction through the relay.

In this embodiment, the variable frequency control board 10 includes a driving unit and a main control unit connected to the driving unit, and the driving unit controls the operation of the variable frequency compressor according to the operation parameters of the variable frequency compressor; the main control unit is used for temperature sampling and fan load control.

In this embodiment, the driving unit includes an input end, an EMC filter circuit 11, a Boost-type PFC circuit 12, an IPM unit 13, a DSP control unit 14, and a current shoot detection circuit 15, where the input end is connected to the EMC filter circuit 11, the EMC filter circuit 11 is connected to the Boost-type PFC circuit 12 and the DSP control unit 14, the Boost-type PFC circuit 12 is connected to the IPM unit 13 and the DSP control unit 14, the DSP control unit 14 is connected to the IPM unit 13 and the current shoot detection circuit 15, and the current shoot detection circuit 15 is connected to the IPM unit 13.

In this embodiment, the main control unit includes main controller 21, temperature sensor, debugging interface, and main controller 21 communicates through the UART serial ports with DSP control unit 14, and main controller 21 is connected with temperature sensor, debugging interface, indoor motor respectively.

In this embodiment, the mechanical line controller 30 includes an MCU controller 31, a key unit, an LCD display screen, and a temperature sensor, the MCU controller 31 is connected to the main controller 21 through a plurality of switching value interfaces, the MCU controller 31 is connected to the key unit, the LCD display screen, and the temperature sensor respectively, wherein the plurality of switching value interfaces are relay outputs.

The plurality of switching value interfaces comprise a refrigeration mode switch, a heating mode switch, an indoor fan low-grade switch, an indoor fan middle-grade switch and an indoor fan high-grade switch. It can be seen that the variable frequency air conditioner control panel is reserved with a switching value interface and is connected with a mechanical line controller 30, such as a Y-refrigeration mode switch; w-heating mode switch; f1-indoor fan low-grade switch; f2-indoor fan middle switch; f3-high-grade switch for indoor fan

Therefore, the variable frequency control board 10 of the present invention is composed of a driving unit and a main control unit, wherein the driving unit is responsible for controlling the operation of the compressor; the main control unit is responsible for temperature sampling, fan load control and other functions. The mechanical wire controller 30 has functions of a display unit, temperature sampling, key pressing and the like, and can output switching value to control the internal fan, mode selection and the like.

In this embodiment, the frequency converter is physically connected to the mechanical wire controller 30, and receives the switching value of the wire controller to realize the functions of mode control, internal fan switching, windshield switching, and the like; an alarm signal may also be sent for display at the mechanical drive-by-wire 30.

An embodiment of an adjusting method of a set temperature adjusting device of a variable frequency air conditioner comprises the following steps:

the invention provides an adjusting method of a set temperature adjusting device of an inverter air conditioner, wherein the set temperature adjusting device of the inverter air conditioner adopts the set temperature adjusting device of the inverter air conditioner, and as shown in figure 3, the method comprises the following steps:

step S1, the mechanical line controller 30 executes the human-computer interaction switch instruction, and outputs a mode selection instruction and a wind gear adjustment instruction, and the variable frequency control board 10 receives the mode selection instruction and the wind gear adjustment instruction directly sent by the mechanical line controller 30. In step S1, the mechanical line controller 30 executes the human-computer interaction switch command, sets the temperature, selects the mode, and adjusts the wind gear; outputting a mode switch, a gear adjusting signal and the like through a relay; the variable frequency air conditioner control panel receives the mode switch signal, the wind gear and other switch signals of the fixed frequency controller.

Step S2, after the mechanical line controller 30 is powered on in the control mode, the variable frequency control board 10 is powered on after receiving the mode power on command, and the set temperature Ts is set to the first degree celsius. Wherein the first degree centigrade is 16 degree centigrade or 30 degree centigrade, which is the lowest settable temperature.

And step S3, controlling the operation of the variable frequency air conditioner, and recording the actual indoor temperature Tia after receiving the mode closing instruction sent by the mechanical wire controller 30.

Step S4, after the variable frequency control board 10 receives the mode power-on instruction again, if the indoor temperature Tia is the second degree celsius when the vehicle is shut down last time, the variable frequency control board 10 sets the set temperature Ts to the second degree celsius. Wherein the second degree centigrade is 20 ℃ or 26 ℃.

Further, when the variable frequency control board 10 is shut down again and then started up, if the set temperature Ts during the last shutdown is less than or greater than the second degree centigrade, the set temperature Ts of this time is decreased or increased by the set temperature value based on the set temperature Ts during the last shutdown until the detected shutdown temperature is equal to the indoor temperature Tia, and the indoor temperature Tia at this time is taken as the set temperature Ts.

Further, when the variable frequency control board 10 sets the set temperature Ts to the second degree celsius, if the variable frequency control board is stopped at a temperature lower than the second degree celsius, the set temperature Ts during the stop is set to the set temperature Ts for the next start-up.

Further, if the variable frequency air conditioner is determined to be started for the first time, the variable frequency control panel 10 operates according to the lowest set temperature Ts, and if the indoor temperature is at the first degree centigrade and the mechanical line controller 30 sends a stop signal, the set temperature Ts is adjusted to the first degree centigrade.

Specifically, when the variable frequency air conditioner is started for the first time, the variable frequency control panel 10 operates according to the lowest set temperature Ts, and if the room temperature is 20 ℃, the mechanical line controller 30 sends a shutdown signal, and then the set temperature Ts is adjusted to 20 ℃. 1. If the machine does not stop when the machine is started up for 20 ℃ next time, the set temperature Ts is reduced, and then the set temperature Ts is reduced by 2 ℃ (such as 18 ℃), and so on until the environmental temperature when the mechanical wire controller 30 sends a stop instruction is detected, and the temperature is used as the set temperature Ts for starting up for the next time. 2. If the shutdown is performed after the next startup and the temperature has not reached 20 ℃, for example, the shutdown is performed at 24 ℃, then 24 ℃ is directly used as the set temperature Ts after the next startup.

In practical application, the control modes of the present embodiment are a cooling mode and a heating mode:

ts-set temperature;

tia-indoor temperature detected by the variable frequency control board 10;

in the cooling mode, as shown in fig. 4, after the mechanical drive-by-wire 30 is powered on in the cooling mode, the variable frequency control board 10 is powered on after receiving a cooling mode power-on command sent by the mechanical drive-by-wire 30, and the set temperature Ts is set to 16 ℃ (minimum settable temperature): ts ═ 16 ℃.

And controlling the operation of the variable frequency air conditioner, and recording the indoor temperature Tia at the moment after receiving a mode closing instruction sent by the mechanical wire controller 30.

When the variable frequency control board 10 receives the refrigeration mode starting instruction again, if the indoor temperature Tia is 20 ℃ when the variable frequency control board 10 is shut down last time, the set temperature Ts is set to 20 ℃ by the variable frequency control board 10; if the shutdown temperature is less than 20 ℃, the temperature during shutdown is set to be the set temperature Ts for the next startup, and if the last shutdown temperature is more than 24 ℃, the temperature during startup is set to be 24 ℃.

And starting up the variable frequency control panel 10 after stopping again, and if the set temperature Ts is less than 20 ℃ during stopping, reducing the set temperature Ts by 1 ℃ again on the basis of the last set temperature Ts until the temperature during stopping is detected to be equal to the indoor temperature, and taking the indoor temperature at the moment as the set temperature Ts.

In the heating mode, as shown in fig. 5, after the mechanical line controller 30 is powered on in the heating mode, the variable frequency control board 10 is powered on after receiving a heating mode power-on command sent by the mechanical line controller 30, and the set temperature Ts is set to 30 ℃ (lowest settable temperature): ts 30 ℃.

And controlling the operation of the variable frequency air conditioner, and recording the indoor temperature Tia at the moment after receiving a mode closing instruction sent by the mechanical wire controller 30.

When the variable frequency control board 10 receives the heating mode opening instruction again, if the indoor temperature is more than or equal to 26 ℃ when the machine is shut down last time, the variable frequency control board 10 sets the set temperature Ts to 26 ℃; if the shutdown temperature is less than 26 ℃, the temperature at the shutdown time is set to be the set temperature Ts for the next startup, and if the last shutdown temperature is less than 22 ℃, the temperature is set to be 22 ℃ at the startup time.

And starting up the variable frequency control panel 10 after stopping again, if the set temperature Ts is more than 26 ℃ during stopping, increasing the set temperature Ts by 1 ℃ on the basis of the last set temperature Ts until the temperature during stopping is equal to the indoor temperature, and taking the indoor temperature as the set temperature Ts.

Therefore, the set temperature Ts of the mechanical wire controller 30 is compared and calculated through the room temperature detected by the variable frequency air conditioner controller when the mechanical wire controller 30 is stopped, and in a mechanical wire controller system matched with the variable frequency air conditioner, the set temperature Ts of the variable frequency air conditioner can be estimated and is more consistent with the actual temperature of the indoor environment, so that the temperature regulation and control of the air conditioner are more accurate, and the use comfort and the energy-saving effect of the variable frequency air conditioner are improved.

It should be noted that the above is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept also fall within the protection scope of the present invention.