1. A method for cleaning filth blockage of an air conditioner heat exchanger comprises the following steps:

collecting filth blockage parameters of a heat exchanger;

determining the filth blockage grade of the heat exchanger according to the filth blockage parameter, a preset initial value of the filth blockage parameter and a plurality of preset threshold values,

and starting a filth blockage cleaning program of the heat exchanger according to the determined filth blockage grade.

2. The method of claim 1, wherein determining a dirty level of a heat exchanger from the dirty parameter, a dirty parameter initial value, and a preset threshold comprises:

and in a first preset time, comparing the difference value between the average value of the filthy blockage parameters and a preset filthy blockage parameter initial value with a plurality of preset threshold values, and determining the filthy blockage grade according to the comparison result.

3. The method of claim 2, wherein the fouling parameters include voltage, current, exhaust temperature of the heat exchanger overall, and power calculated from the voltage and current.

4. The method of claim 4, wherein the increased energy consumption level of the heat exchanger is determined based on a comparison of a difference between the average value of the power and a preset initial value of the power over a first predetermined time and a preset plurality of power thresholds.

5. The method of claim 1, wherein the fouling parameter comprises at least one of a current of the heat exchanger overall and an exhaust temperature.

6. The method of claim 4, wherein upon determining a fouling level and an increased energy consumption level of the heat exchanger,

controlling the outdoor fan to reversely rotate according to the filth blockage grade to remove filth blockage; and is

And feeding back the filth blockage level and the energy consumption level to a user.

7. The method of claim 1, wherein the controlling outdoor fan reverse operation according to a dirty plug level comprises:

and after stopping the outdoor fan for a second preset time, controlling the outdoor fan to reversely rotate for a third preset time, and restarting the dirty and blocked parameter acquisition and dirty and blocked grade determination of the whole heat exchanger after stopping the outdoor fan for a fourth preset time.

8. A filth blockage cleaning device for an air conditioner heat exchanger comprises:

an acquisition module configured to: collecting filth blockage parameters of a heat exchanger;

a determination module configured to: determining the filth blockage grade of the heat exchanger according to the filth blockage parameter, a preset filth blockage parameter initial value and a plurality of preset threshold values;

a control module configured to: and starting a filth blockage cleaning program of the heat exchanger according to the determined filth blockage grade.

9. The apparatus of claim 8, wherein the acquisition module is further configured to: the current, the voltage and the exhaust temperature of the heat exchanger complete machine are collected through the temperature sensor, the current detection module and the voltage detection module, and the power of the heat exchanger complete machine is determined according to the voltage and the current.

10. The apparatus of claim 9, wherein the determination module is further configured to: comparing the difference value between the average value of the filth blockage parameters and a preset filth blockage parameter initial value with a plurality of preset threshold values within first preset time, and determining the filth blockage grade according to the comparison result;

and determining the increased energy consumption level of the heat exchanger according to the comparison result of the difference value between the average value of the power and the preset initial value of the power in the first preset time and the preset power threshold value.

11. The apparatus of claim 10, further comprising:

a display module configured to: and displaying the filth blockage level and the energy consumption level to a user.

12. The apparatus of claim 8, wherein the dirty cleaning procedure of the heat exchanger comprises: and controlling the outdoor fan to reversely rotate according to the filth blockage grade to remove filth blockage.

13. The apparatus of claim 12, wherein the control module is further configured to:

and after the outdoor fan stops operating for the second preset time, controlling the outdoor fan to reversely operate for the third preset time, and then restarting the dirty and blockage parameter acquisition and dirty and blockage grade determination of the whole heat exchanger after the outdoor fan stops operating for the fourth preset time.

14. An air conditioner employing the method of any one of claims 1 to 7 or comprising the apparatus of claims 8 to 13.

Background

Most of the existing air conditioners do not have functions of reminding of dirty blockage of a heat exchanger and cleaning, so that users generally can only select cleaning service of the heat exchanger regularly by taking time as a limit. However, the atmospheric environment varies significantly between cities, and even between cities, residential areas and industrial areas have different atmospheric environments. Meanwhile, with the deterioration of the existing living environment, the dirty blocking condition of the heat exchanger is more and more common.

In terms of the heat exchange principle of the heat exchanger, an air-cooled heat exchanger is common, and a refrigerant flows through a copper pipe to exchange heat with ambient air. In order to enhance the heat exchange effect, the copper pipe needs to be distributed with more dense fins, the spacing between the fins is more than 1.3 mm and 1.4 mm, and the small gap easily causes dirty blockage. Once the heat exchanger is fouled, the contact area of the copper pipe with the air is reduced, and the fluidity of the air from the heat exchanger is deteriorated. The reduction of the heat exchange effect directly influences the performance of the air conditioner, thereby reducing the comfort of user experience.

The existing heat exchanger filth blockage reminding functions are roughly 3, and as described in chinese patent CN106440186A (a heat exchanger filth blockage detection method and system based on a single pressure sensor, and an air conditioner), the heat exchanger filth blockage level is converted according to the differential pressure and the current fan rotation speed by detecting the differential pressure between the filter layer network and the leeward side of the heat exchanger at the current wind speed. The technical scheme has the disadvantages that the influence on the pressure difference is different under different climates or different environments, such as outdoor units of low-rise residences and high-rise residences, but the technical scheme can be realized only in a constant environment. In addition, as described in chinese patent CN105674485A (dirty and blockage detection method and apparatus for air conditioner), it detects the dirty and blockage of the heat exchanger by detecting the rotation speed and gear of the motor under the target voltage and comparing the rotation speed of the motor with the rotation speed of the set gear. The technical scheme has the disadvantages that the rotating speed of the motor changes according to different loads under the same voltage, and in fact, the loads are different under different working conditions and different frequencies under the same voltage, so that the heat exchanger filth blockage condition is difficult to accurately judge by the technical scheme. In addition, as described in chinese patent CN104110781B (air conditioner and filth blockage detection control method and device thereof), the heat exchanger filth blockage condition is known by detecting the rotation speed, current and voltage of the motor and converting into the motor power, and comparing the motor power with the set power, so as to remind the user or automatically reverse the motor to remove filth blockage. However, the technical scheme has the defects that the power of the fan and the like correspond to gears, so that the influence of filth blockage on the power of the motor is small, and the filth blockage condition of the heat exchanger is difficult to accurately judge. Therefore, there is a need in the art for a solution that can efficiently detect and clean the filth blockage of an air conditioner heat exchanger.

The above information disclosed in the background section is only for further understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art.

Disclosure of Invention

The invention provides a method and a device for cleaning filth blockage of an air conditioner heat exchanger, which solve the problems of performance reduction and energy consumption increase caused by untimely learning of a user when the filth blockage occurs in the conventional heat exchanger.

In order to solve the problems in the prior art, the invention provides a method and a device for cleaning filth blockage of an air conditioner heat exchanger and an air conditioner.

The invention provides a method for cleaning filth blockage of an air conditioner heat exchanger, which comprises the following steps: dirty blocking parameters of the heat collecting and exchanging device; and determining the filth blockage grade of the heat exchanger according to the filth blockage parameter, the preset initial value of the filth blockage parameter and the preset multiple threshold values, and starting a filth blockage cleaning program of the heat exchanger according to the determined filth blockage grade.

According to an embodiment of the present invention, the determining the filth level of the heat exchanger according to the filth parameter, the initial value of the filth parameter and the preset threshold value includes: and in a first preset time, comparing the difference value between the average value of the filthy blockage parameters and a preset filthy blockage parameter initial value with a plurality of preset threshold values, and determining the filthy blockage grade according to the comparison result.

According to one embodiment of the invention, the dirty-plugging parameters comprise voltage, current, exhaust temperature of the complete heat exchanger and power calculated according to the voltage and current.

According to one embodiment of the invention, the increased energy consumption level of the heat exchanger is determined according to the comparison result of the difference value between the average value of the power and the preset initial value of the power in the first preset time and the preset multiple power threshold values.

According to one embodiment of the invention, the dirty-blockage parameter comprises at least one of the current of the complete heat exchanger and the exhaust temperature.

According to an embodiment of the invention, after the dirty and blockage grade of the heat exchanger and the increased energy consumption grade are determined, the outdoor fan is controlled to reversely rotate according to the dirty and blockage grade to remove the dirty and blockage; and feeding back the filth level and the energy consumption level to the user.

According to an embodiment of the present invention, the controlling the outdoor fan to reversely rotate according to the filth blockage level includes: and after stopping the outdoor fan for a second preset time, controlling the outdoor fan to reversely rotate for a third preset time, and restarting the dirty and blocked parameter acquisition and dirty and blocked grade determination of the whole heat exchanger after stopping the outdoor fan for a fourth preset time.

The second aspect of the present invention provides a device for cleaning filth blockage of an air conditioner heat exchanger, comprising:

an acquisition module configured to: collecting filth blockage parameters of a heat exchanger; a determination module configured to: determining the filth blockage grade of the heat exchanger according to the filth blockage parameter, a preset filth blockage parameter initial value and a plurality of preset threshold values; a control module configured to: and starting a filth blockage cleaning program of the heat exchanger according to the determined filth blockage grade.

According to an embodiment of the invention, wherein the acquisition module is further configured to: the current, the voltage and the exhaust temperature of the heat exchanger complete machine are collected through the temperature sensor, the current detection module and the voltage detection module, and the power of the heat exchanger complete machine is determined according to the voltage and the current.

According to an embodiment of the invention, wherein the determining module is further configured to: comparing the difference value between the average value of the filth blockage parameters and a preset filth blockage parameter initial value with a plurality of preset threshold values within first preset time, and determining the filth blockage grade according to the comparison result; and determining the increased energy consumption level of the heat exchanger according to the comparison result of the difference value between the average value of the power and the preset initial value of the power in the first preset time and the preset power threshold value.

According to an embodiment of the invention, wherein the detection module is further configured to: the method comprises the steps of detecting the current, the voltage and the exhaust temperature of the whole heat exchanger in first preset time through a temperature sensor, a current detection module and a voltage detection module, and determining the power of the whole heat exchanger according to the voltage and the current.

According to an embodiment of the present invention, further comprising: a display module configured to: and displaying the filth blockage level and the energy consumption level to a user.

According to one embodiment of the invention, the dirty cleaning procedure of the heat exchanger comprises the following steps: and controlling the outdoor fan to reversely rotate according to the filth blockage grade to remove filth blockage.

According to an embodiment of the invention, wherein the control module is further configured to: and after the outdoor fan stops operating for the second preset time, controlling the outdoor fan to reversely operate for the third preset time, and then restarting the dirty and blockage parameter acquisition and dirty and blockage grade determination of the whole heat exchanger after the outdoor fan stops operating for the fourth preset time.

The third aspect of the invention provides an air conditioner, which adopts the filth blockage cleaning method of the air conditioner heat exchanger or comprises the filth blockage cleaning device of the air conditioner heat exchanger.

According to the scheme of the invention, when the heat exchanger is dirty and blocked, the customer can be reminded of the dirty and blocked grade and the expected increased energy consumption, and the dirty and blocked can be cleaned in time.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a flowchart illustrating a method for cleaning a filth blockage of an air conditioner heat exchanger according to an exemplary embodiment of the present invention.

Fig. 2 is a block diagram of a filth-clearing device for an air conditioner heat exchanger according to an exemplary embodiment of the present invention.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

As used herein, the terms "first," "second," and the like may be used to describe elements of exemplary embodiments of the invention. These terms are only used to distinguish one element from another element, and the inherent features or order of the corresponding elements and the like are not limited by the terms. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms, such as those defined in commonly used dictionaries, are to be interpreted as having a meaning that is consistent with their context in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Those skilled in the art will understand that the devices and methods of the present invention described herein and illustrated in the accompanying drawings are non-limiting exemplary embodiments and that the scope of the present invention is defined solely by the claims. Features illustrated or described in connection with one exemplary embodiment may be combined with features of other embodiments. Such modifications and variations are intended to be included within the scope of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, a detailed description of related known functions or configurations is omitted to avoid unnecessarily obscuring the technical points of the present invention. In addition, the same reference numerals refer to the same circuits, modules or units throughout the description, and repeated descriptions of the same circuits, modules or units are omitted for brevity.

Further, it should be understood that one or more of the following methods or aspects thereof may be performed by at least one control unit or controller. The term "control unit", "controller", "control module" or "main control module" may refer to a hardware device including a memory and a processor, and the term "air conditioner" may refer to a device similar to an air conditioner. The memory or computer-readable storage medium is configured to store program instructions, while the processor is specifically configured to execute the program instructions to perform one or more processes that will be described further below. Moreover, it is to be appreciated that the following methods may be performed by including a processor in conjunction with one or more other components, as will be appreciated by one of ordinary skill in the art.

When the air conditioner is in operation, when the condenser is shielded, and the dirty blockage condition of the condenser is simulated, the air inlet abnormity test experiment of the evaporator and the condenser can show that when the heat exchanger is subjected to 1/4, 2/1 and 3/4 and is completely blocked, the most intuitive embodiment is that the exhaust temperature, the current and the power are increased in different degrees. Therefore, the function of reminding the dirty blockage of the heat exchanger can be realized by detecting the exhaust temperature, the current and the power. Meanwhile, because the fins are dense, most of dust is concentrated on the outer side of the heat exchanger, when the filth blockage degree of the heat exchanger reaches a certain degree, the filth blockage can be solved by utilizing the reverse rotation function of the motor of the outdoor fan and strong wind power.

Fig. 1 is a flowchart of an air conditioner heat exchanger fouling condition detection method according to an exemplary embodiment of the present invention. As shown in figure 1 of the drawings, in which,

at step S1, collecting heat exchanger filth blockage parameters within a first predetermined time;

in step S2, determining a filth blockage level of the heat exchanger according to the filth blockage parameter, a preset initial value of the filth blockage parameter, and a plurality of preset thresholds;

at step S3, a dirty cleaning procedure for the heat exchanger is initiated based on the determined dirty level.

According to one or more embodiments of the invention, when the heat exchanger filth blockage condition is detected, data related to heat exchange related parameters are collected and detected in real time; comparing the data with a preset initial value, feeding the comparison result back to a client or an air conditioning system, determining the current filth blockage level and estimating the energy consumption which is possibly increased; the user or the air conditioner control system operates to control the motor of the outdoor unit to rotate reversely for a preset time through a program or a command and then operate in a normal mode; and feeding back the current filth blockage grade and predicting the possible increased energy consumption of the client or the air conditioner control system through the detected data and the comparison result with the initial preset value.

According to one or more embodiments of the invention, the filth blockage degree is corresponding to a preset filth blockage grade, and the filth blockage is cleared by controlling the outdoor fan to reversely rotate according to the filth blockage grade; determining an energy consumption level of the condenser based on the increased energy consumption; and feeding back the filth level and the energy consumption level to the user. The feedback heat exchanger filth level is displayed, for example, by a display module or a display panel installed in the air conditioner (or remotely notified to the client through APP), for example, green is adopted to represent that the heat exchanger is not filth, yellow is adopted to represent that the heat exchanger is lightly filth, blue is adopted to represent that the heat exchanger is moderately filth, and red is adopted to represent that the heat exchanger is heavily filth. In addition, the power consumption level is increased to level 1 when the power is increased by a, for example, according to the increased power consumption feedback. When the power is increased by b, the power consumption level is increased to 2. When the power is increased by c, the power consumption level is increased to 3.

According to one or more embodiments of the invention, the difference value between the average value of the filth blockage parameters and the preset initial value of the filth blockage parameters is compared with a plurality of preset threshold values in a first preset time, and the filth blockage grade is determined according to the comparison result. The voltage, the current and the exhaust temperature of the whole heat exchanger are collected through a collection module, and the increased energy consumption level of the heat exchanger is determined according to the difference value between the average value of the power and a preset power initial value in first preset time and the comparison result of a plurality of preset power threshold values. Thus, the fouling parameters of the heat exchanger include at least voltage, current, exhaust gas temperature and power. Of course, in the design, the dirty blocking parameter of the heat exchanger may be at least one of the current and the exhaust temperature of the whole heat exchanger.

According to one or more embodiments of the invention, when the air conditioner is operated, the power supply voltage of the heat exchanger fluctuates slightly, and the current changes with different working conditions, so that the voltage fluctuation, the influence of the working conditions and the like need to be considered during detection. As shown in table 1 below, in the detection process, a preset initial setting value is selected to be compared with the detected relevant parameter value, wherein the preset initial value may be a fixed value set before the factory, and is only used as a reference. In order to avoid the fluctuation of the detection value, the detection of the relevant parameter values of the heat exchanger is carried out in the first preset time, and the average value is taken as the object for comparing with the preset initial value.

TABLE 1 setup of preset initial values, detection values and difference values

As shown in table 1, the preset initial value is a normal value of the heat exchanger operating at a predetermined temperature, and may be set from factory, where a "difference" refers to an amount by which a detected value deviates from the normal value within a first predetermined time, and the difference corresponds to a level of the degree of the filth blockage, and the degree of the filth blockage of the heat exchanger is determined by the difference.

According to one or more embodiments of the present invention, the degree of filth of the heat exchanger is determined according to a comparison result between a difference value between the average value of the relevant parameter and the preset initial value and a preset filth level threshold value (i.e., a plurality of threshold values). And determining the increased energy consumption of the heat exchanger according to the comparison result of the difference value between the average value of the power and the preset power initial value in the first preset time and a preset power level threshold value (namely a plurality of power threshold values).

For example, by comparing the detected values of the current, the exhaust temperature (average value in the first predetermined time) and a preset initial value (i.e., I)_iAnd F_i) Feeding back filth blockage grade; and feeding back the increased energy consumption level by comparing the detected power with a preset initial power value.

When feedback is performed, according to the "difference" (X) in Table 1_iDetection average value-preset initial value) to perform feedback, for example, if the difference value is X₁<x₀Then the dirty grade is green, and so on, where x₀Is a first preset filth level threshold, and the specific setting of the preset filth level threshold is shown in table 2.

TABLE 2 dirty level determination rules

In Table 2, x_iThe value of (A) can be selected based on the variation in the difference, i.e. x_iThe predetermined class threshold (i.e., thresholds), x, is selected based on the difference between the current and the exhaust temperature in Table 1_iIncludes (x)_{i current of}And x_{i exhaust temperature}A rank threshold value). Wherein, the more serious the filth blockage degree of the heat exchanger is, the current, the exhaust temperature and the power can be improved in a step manner. The initial value of each filth blockage grade is measured according to the filth blockage degree of the simulated condenser, and the filth blockage grade can be judged by comparing the difference value and the initial value in the table 1.

Table 3 is a specific case of judging the power level for increasing the power consumption from the difference of the powers in table 1.

TABLE 3 energy consumption level determination rules

Wherein p is₀It is an initial value to rank in steps. Normal power p during normal operation₀However, when the dirty blockage occurs, the heat exchange area of the condenser is reduced, the system can be overloaded to increase the power in order to achieve the normal refrigerating capacity, and at the moment, the increase of the power of the part is the increased energy consumption,different grades for increasing energy consumption are prompted by comparing the initial values, wherein the corresponding preset power grade threshold value is p_i。

According to one or more embodiments of the invention, after determining the increased energy consumption of the filth blockage degree of the heat exchanger, the filth blockage degree is corresponding to a preset filth blockage grade, and the outdoor fan is controlled to reversely rotate according to the filth blockage grade to remove the filth blockage; determining the energy consumption grade of the heat exchanger according to the increased energy consumption; and feeding back the filth blockage grade and the energy consumption grade to a user, specifically, after stopping the outdoor fan for a preset second time, controlling the outdoor fan to reversely rotate for a third preset time, and then after stopping the outdoor fan for a fourth preset time, restarting the complete machine of the heat exchanger to re-acquire the filth blockage parameters, re-determine the filth blockage grade and re-determine the energy consumption grade.

Specifically, a user or a control system can use a remote controller or APP for operation according to the heat exchanger filth blockage condition, after the controller receives a command, the control system stops operating for a second preset time, the outdoor fan is controlled to reversely operate for a third preset time, and then the outdoor fan stops operating for a fourth preset time, the system normally operates, and continues to detect and feed back the heat exchanger filth blockage condition to the user.

According to one or more embodiments of the invention, the air conditioning system converts the power value by detecting the voltage and the current of the whole heat exchanger in real time, and detects the environmental working condition and the exhaust temperature, wherein the first preset time is required to be detected and the average value is taken. The current filth level and the increased power consumption level are fed back by comparison with the preset initial values in table 1. And then the filth blockage grade and the energy consumption grade are displayed through a display panel or a display module in the air conditioner, and the filth blockage grade and the energy consumption grade can also be sent to a user remotely through the APP. The display mode of the dirty blockage grade can visually indicate the dirty blockage condition of the condenser; the "power consumption level" display mode can visually represent the situation of increased power consumption. When a user selects filth blockage cleaning (or the filth blockage is automatically cleaned by an air conditioner control system), the outdoor fan is controlled to reversely rotate according to a set program. And when the cleaning program is finished, the system normally runs, continues to detect and feeds back the current filth blockage grade and the increased energy consumption grade.

According to one or more embodiments of the invention, when the heat exchanger filth blockage cleaning is realized, if dust on the heat exchanger is condensed under the action of rainwater when the outdoor environment is rainy, the wind resistance is large, and the filth blockage is easier to blow out, so that the best filth blockage cleaning effect can be obtained by using the filth blockage cleaning function in rainy days.

Fig. 2 is a block diagram of a filth-clearing device for an air conditioner heat exchanger according to an exemplary embodiment of the present invention.

As shown in fig. 2, the detection apparatus includes: an acquisition module configured to: collecting filth blockage parameters of the heat exchanger in first preset time; a determination module configured to: determining the filth blockage grade of the heat exchanger according to the filth blockage parameter, a preset filth blockage parameter initial value and a plurality of preset threshold values; a control module configured to: and starting a filth blockage cleaning program of the heat exchanger according to the determined filth blockage grade.

According to one or more embodiments of the invention, the acquisition module is further configured to: the current, the voltage and the exhaust temperature of the heat exchanger complete machine are collected through the temperature sensor, the current detection module and the voltage detection module, and the power of the heat exchanger complete machine is determined according to the voltage and the current. A display module configured to: and displaying the filth blockage level and the energy consumption level to a user. The determination module is further configured to: comparing the difference value between the average value of the filth blockage parameters and a preset filth blockage parameter initial value with a plurality of preset threshold values within first preset time, and determining the filth blockage grade according to the comparison result; and determining the increased energy consumption level of the heat exchanger according to the comparison result of the difference value between the average value of the power and the preset initial value of the power in the first preset time and the preset power threshold value.

According to one or more embodiments of the present invention, the control module controls the outdoor fan through a control command or a control program (i.e., a dirty block cleaning program), specifically including: and after stopping the outdoor fan for a second preset time, controlling the outdoor fan to reversely rotate for a third preset time, and restarting the dirty and blocked parameter acquisition and dirty and blocked grade determination of the whole heat exchanger after stopping the outdoor fan for a fourth preset time.

In accordance with one or more embodiments of the present invention, the control logic of the air conditioner heat exchanger fouling cleaning method of the present invention may use encoded instructions (e.g., computer and/or machine readable instructions) stored on a non-transitory computer and/or machine readable medium (e.g., hard disk drive, flash memory, read only memory, optical disk, digital versatile disk, cache, random access memory, and/or any other storage device or storage disk) in which information is stored for any period of time (e.g., extended time periods, permanent, transient instances, temporary cache, and/or information cache) to implement the processes of the autoregulating scheme as described above in the present invention. As used herein, the term "non-transitory computer-readable medium" is expressly defined to include any type of computer-readable storage device and/or storage disk and to exclude propagating signals and to exclude transmission media.

According to one or more embodiments of the invention, the control circuit, (control logic, main control system or control module) of the cleaning device for the filth blockage of the air conditioner heat exchanger may include one or more processors, and may also include a non-transitory computer readable medium inside. In particular, a microcontroller MCU may be included in the smart device (master control system or control module) which is disposed in the air conditioner for detecting various operations of the heat exchanger filth blockage and implementing various functions. The processor used to implement the dirty condition detection and cleaning functions of the air conditioner heat exchanger of the present invention may be such as, but not limited to, one or more single-core or multi-core processors. The processor(s) may include any combination of general-purpose processors and special-purpose processors (e.g., graphics processors, application processors, etc.). The processor may be coupled thereto and/or may include a memory/storage device and may be configured to execute instructions stored in the memory/storage device to implement various applications and/or operating systems running on the controller in accordance with the present invention.

According to the solution for detecting and cleaning the filth blockage condition of the air-conditioning heat exchanger, when the outdoor heat exchanger is filth-blocked, the filth blockage grade and expected power consumption which may be increased can be fed back to a user according to the filth blockage condition, and the user selects to execute filth blockage cleaning. When in rainy days, dust on the outdoor heat exchanger is condensed by rainwater, and a user can remotely control the motor to rotate reversely, so that the problem of dirty and blocked heat exchanger is more easily solved.

In addition, by adopting the solution for detecting and cleaning the filth blockage condition of the air-conditioning heat exchanger, a user can be reminded of the filth blockage grade of the heat exchanger and the expected energy consumption which may be increased; when the filth blockage situation reaches a certain degree, the motor can be used for reversing to slow the filth blockage; the problems that when the existing heat exchanger is dirty and blocked, a user cannot know the dirty and blocked state in time, performance is reduced, and energy consumption is increased are solved; the detection scheme for the dirty blockage condition of the air conditioner heat exchanger has high automation degree, and the program can preferably and automatically slow down the dirty blockage condition and remind a user of cleaning in time, so that the condition that the brand credibility is reduced due to the fact that the user doubts the product performance is avoided.

According to one or more embodiments of the invention, the dirty blockage detection of the heat exchanger can be usually carried out in real time, but in order to save energy, a function key can be set, and the function key is operated by a user or a system according to requirements, so that the detection times are reduced, and the energy is saved.

In addition, according to one or more embodiments of the invention, the dirty blockage cleaning of the heat exchanger can be automatically operated by a user, and for more intellectualization, the system can be set to automatically start the dirty blockage cleaning when the dirty blockage level reaches a certain degree.

According to one or more embodiments of the present invention, the dirty level and the increased energy consumption level can be fed back by using numbers and colors, respectively, or by using other methods, not limited to numbers and colors, and not limited to 4 levels in this embodiment.

According to one or more embodiments of the present invention, the voltage fluctuation is sufficiently taken into consideration, but when the voltage fluctuation of the heat exchanger is small, the detection can be cancelled in order to reduce the detection element.

According to one or more embodiments of the invention, the detection of the dirty condition of the air conditioner heat exchanger can be carried out by only detecting any one of current, power and exhaust temperature.

The drawings referred to above and the detailed description of the invention, which are exemplary of the invention, serve to explain the invention without limiting the meaning or scope of the invention as described in the claims. Accordingly, modifications may be readily made by those skilled in the art from the foregoing description. Further, those skilled in the art may delete some of the constituent elements described herein without deteriorating the performance, or may add other constituent elements to improve the performance. Further, the order of the steps of the methods described herein may be varied by one skilled in the art depending on the environment of the process or apparatus. Therefore, the scope of the present invention should be determined not by the embodiments described above but by the claims and their equivalents.

While the invention has been described in connection with what is presently considered to be practical embodiments, it is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.