WO2018129840A1

WO2018129840A1 - Defrosting control method, defrosting control system, and air conditioner

Info

Publication number: WO2018129840A1
Application number: PCT/CN2017/082581
Authority: WO
Inventors: 谭周衡; 张�浩; 刘奇伟
Original assignee: 美的集团武汉制冷设备有限公司; 美的集团股份有限公司
Priority date: 2017-01-10
Filing date: 2017-04-28
Publication date: 2018-07-19
Also published as: CN106705379A

Abstract

A defrosting control method, comprising: when an air conditioner (300) implements defrosting in a heating mode, controlling the operation of an electrical heating element to heat a heat accumulator (102); detecting the temperature of the heat accumulator (104); determining whether the temperature of the heat accumulator is greater than a preset temperature (106); if so, then controlling the electrical heating element to stop operating (108) and if not, then controlling the electrical heating element to operate. Also disclosed are a defrosting control system (200) and an air conditioner (300).

Description

Defrost control method, defrosting control system and air conditioner

This application claims the priority of the Chinese Patent Application filed on January 10, 2017, the Chinese Patent Office, the application number is 2017100165559, and the invention name is "defrosting control method, defrosting control system and air conditioner", the entire contents of which are incorporated by reference. Combined in this application.

Technical field

The present invention relates to the field of air conditioner technology, and in particular to a defrosting control method, a defrosting control system, and an air conditioner.

Background technique

The air conditioner in the related art usually uses the exhaust temperature of the compressor to perform hot air blasting. When the defrosting starts, the four-way valve reverses to make the outdoor heat exchanger radiate heat, and the indoor heat exchanger absorbs heat, causing indoor indoor temperature. Reduce, so in a colder environment, the air conditioner operates the refrigeration cycle, which will cause the room temperature to be hot and cold, affecting the user's comfort; and the frost in the lower part of the outdoor heat exchanger is more difficult to remove during the defrost process. When the upper part has been defrosted, it must wait until the defrosting of the outdoor heat exchanger is completed before the defrosting can be completed at the same time and enter the normal heating operation state, thus wasting a part of the heat and prolonging the defrosting process. Reduces heat and reduces overall heating.

Summary of the invention

In order to solve at least one of the above technical problems, the embodiment of the first aspect of the present invention proposes a defrosting control method.

In a second aspect of the invention, a defrosting control system is also proposed.

In still another embodiment of the present invention, an air conditioner is also proposed.

In view of this, according to an embodiment of the first aspect of the present invention, a defrosting control method is proposed for an air conditioner including a compressor, a four-way valve, an outdoor heat exchanger, a heat storage component, and a cutoff The valve, the heat storage assembly and the shut-off valve are arranged in parallel between the four-way valve and the outdoor heat exchanger, the heat storage assembly includes a heat accumulator and an electric heating element, and the heat storage component enables the air conditioner to defrost in the heating mode Defrost control The method comprises: when the air conditioner is defrosting in the heating mode, controlling the electric heating device to heat the regenerator; detecting the temperature of the regenerator; determining whether the temperature of the regenerator is greater than a preset temperature; if so, controlling the electric heating device to stop Work, if not, control the electric heating element to work.

The defrosting control method provided by the present invention controls the electric heating element to heat the regenerator when the defrosting is performed in the heating mode by the air conditioner, so that the air conditioner is defrosted in the heating mode, so that the refrigerant is heated by being electrically heated. When the heated regenerator is heated, the heat is fully absorbed, the temperature of the refrigerant flowing to the indoor heat exchanger is increased, thereby ensuring a good heating effect, solving the problem of insufficient heat of the regenerator, and simultaneously migrating from the indoor heat exchanger to the outdoor heat exchange. The higher temperature refrigerant is beneficial to the outdoor heat exchanger for defrosting, ensuring that the outdoor heat exchanger is quickly and thoroughly defrosted, avoiding the four-way valve reversing, causing the air conditioner to defrost in the cooling mode to cause a large fluctuation in the indoor temperature. The user's comfort, effectively improve the user's comfort and improve the user's satisfaction; by detecting the temperature of the regenerator and determining whether the regenerator temperature is greater than the preset temperature, when the judgment result is yes, control the electric heating Stop working, avoid the temperature of the regenerator is too high, resulting in less viscosity of the refrigerating machine oil or carbonization of the refrigerating machine oil, increasing the wear of moving parts of the compressor, effectively improving the compressor The service life of the moving parts improves the overall reliability of the product and improves the satisfaction of the user. By controlling the electric heating part when the judgment result is no, the air conditioner continues to defoase in the heating mode, thereby ensuring the defrosting. Timeliness and thoroughness, avoiding the risk that the outdoor heat exchanger is easy to freeze due to defrosting, ensuring good defrosting effect and heating effect, and improving the comfort of the user using the air conditioner.

Further, the temperature of the heat accumulator is at least one of the following or a combination thereof, but is not limited thereto: the temperature of the heat storage material, the surface temperature of the heat accumulator, the internal temperature of the heat accumulator, and various expression forms of the temperature of the heat accumulator can satisfy different Heaters, different heat storage materials, different air conditioners and different user needs, a wide range of applications.

In addition, the defrosting control method in the above embodiment provided by the present invention may further have the following additional technical features:

In the above technical solution, preferably, the method further includes: recording a duration of stopping the operation of the electric heating element, and returning and re-controlling the operation of the electric heating element when the first preset time length is reached.

In this technical solution, by recording the length of time during which the electric heating element stops working, and when the first preset time period is reached, returning and re-controlling the operation of the electric heating element, so that the electric heating element stops working, and the regenerator has sufficient time to perform Cool down, and after the time reaches the first preset time, the temperature is sufficiently reduced. Re-control the work of electric heating parts, so that the air conditioner can be defrosted again in the heating mode, thereby ensuring the timeliness and thoroughness of the defrosting, ensuring good defrosting effect and heating effect, and improving the comfort of the user using the air conditioner. To enhance the user experience.

In any of the above technical solutions, preferably, the method further comprises: returning and re-determining whether the temperature of the regenerator is greater than a preset temperature when the electric heating device is stopped.

In the technical solution, by returning and re-determining whether the temperature of the regenerator is greater than a preset temperature when the electric heating device is stopped, the system can accurately and timely determine the result of the regenerator temperature and the preset temperature in real time. Controlling the working state of the electric heating element, and when the judgment result of whether the regenerator temperature is greater than the preset temperature is no, controlling the electric heating element to work, so that the air conditioner continues to defoase in the heating mode, ensuring the timeliness of the defrosting, Thoroughness, ensuring good defrosting effect and heating effect, improving the user's comfort in using the air conditioner and improving the user experience.

In any of the above technical solutions, preferably, when the air conditioner is defrosting in the heating mode, the specific steps of controlling the operation of the electric heating device to heat the regenerator include: detecting the air conditioner when the air conditioner defrosts in the heating mode The system parameters of the device; determine whether the system parameters meet the preset conditions; if yes, control the electric heating device to heat the regenerator, and if not, return and re-determine whether the system parameters meet the preset conditions.

In the technical solution, when the air conditioner is defrosting in the heating mode, the system parameters of the air conditioner are detected, and it is judged whether the system parameter satisfies the preset condition, and when the judgment result is YES, the electric heating device is controlled to work on the heat accumulator. Heating, so that the air conditioner is defrosted in the heating mode, and when the preset condition is met, the regenerator is heated to ensure that the regenerator has sufficient energy to store heat, thereby ensuring the outdoor heat exchanger is fast and thorough. Defrost, ensure good heating effect and defrosting effect, improve user comfort and improve user satisfaction. When the judgment result is no, return and re-evaluate whether the system parameters meet the preset conditions, so that the air conditioner When the device is defrosting in the heating mode, it can control the electric heating element to start working in real time and accurately according to the judgment result, avoiding the waste of energy when the electric heating element is not reached under the preset condition, and avoiding controlling the electricity after reaching the preset condition for a long time. The heating element works to make the heat of the regenerator insufficient, so that the defrosting effect and the heating effect are not good, and the outdoor heat exchanger has the risk of icing. User comfort, and thus ensure good defrosting effect and heating effect, to enhance the comfort and satisfaction of users.

In any of the above technical solutions, preferably, the system parameter is at least one of the following or a combination thereof: a temperature of the regenerator, a temperature of the condenser, an operating time of the compressor, and an operating frequency of the compressor.

In this technical solution, the system parameter is at least one of the following or a combination thereof but is not limited thereto: the temperature of the regenerator, the temperature of the condenser, the running time of the compressor, the operating frequency of the compressor, and various expressions of system parameters. The form can meet the needs of different air conditioners, different heat storage components, different compressors and different customers, and has a wide range of applications.

In any of the above technical solutions, preferably, the preset temperature is at least one of the following: a relationship of a compressor parameter or a fixed value.

In the technical solution, the preset temperature is at least one of the following: but is not limited thereto: a relationship or a fixed value of the compressor parameter, and various expression manners of the preset temperature can satisfy the requirements of different air conditioner compressors and different users. Wide range of applications. Further, the compressor parameters include at least one of the following or a combination thereof: compressor frequency, compressor power, compressor speed.

In any of the above aspects, preferably, the preset temperature is a fixed value T, wherein 105 ° C ≤ T ≤ 120 ° C.

In the technical solution, the preset temperature is a fixed value T, 105 ° C ≤ T ≤ 120 ° C, to avoid the preset temperature is too high to control the electric heating element to stop working, so that the temperature of the regenerator is too high, resulting in less viscosity or freezing of the refrigerating machine oil The carbonization of the engine oil increases the wear of the moving parts of the compressor, effectively improves the service life of the moving parts of the compressor, improves the overall reliability of the product, improves the satisfaction of the user, and avoids the preset temperature being too low to control the electric heating element to stop working. Influencing the timeliness and thoroughness of the defrosting, the defrosting effect and the heating effect are not good, affecting the comfort of the user, and the proper range of the preset temperature can ensure that the electric heating element stops working at an appropriate time, and the operation is ensured. Good defrosting effect and defrosting effect, improve user comfort and satisfaction, and effectively improve the service life of the moving parts of the compressor and improve the overall reliability of the product.

According to the second aspect of the present invention, a defrosting control system is further proposed for an air conditioner, and the defrosting control system comprises: a control unit, configured to control electric heating when the air conditioner is defrosting in the heating mode The working unit heats the heat accumulator; the detecting unit is configured to detect the temperature of the heat accumulator; the determining unit is configured to determine whether the temperature of the heat accumulator is greater than a preset temperature; and the control unit is further configured to determine whether the judgment result of the unit is When the electric heating element is controlled to stop working, when the judgment result of the judging unit is no, the electric heating element is controlled to work.

The defrosting control system provided by the embodiment of the second aspect of the present invention controls the electric heating device to heat the regenerator when the defrosting device is heated in the heating mode of the air conditioner, so that the air conditioner is in the heating mode. The defrosting makes the refrigerant fully absorb heat when passing through the heat accumulator heated by the electric heating member, thereby increasing the temperature of the refrigerant flowing to the indoor heat exchanger, thereby ensuring a good heating effect and solving the problem of insufficient heat of the regenerator, and at the same time, The higher temperature refrigerant migrating from the indoor heat exchanger to the outdoor heat exchanger is beneficial to the outdoor heat exchanger for defrosting, ensuring rapid and thorough defrosting of the outdoor heat exchanger, avoiding the four-way valve reversing and making the air conditioner in the cooling mode. The defrosting makes the indoor temperature fluctuation greatly affect the user's comfort, effectively improves the user's comfort and improves the user's satisfaction; the detection unit detects the temperature of the regenerator, and the judgment unit determines whether the regenerator temperature is greater than the pre-heat When the temperature is set, the control unit controls the electric heating to stop working when the judgment result of the judgment unit is YES, avoiding the temperature of the regenerator regenerator being too high, resulting in a small viscosity of the refrigerating machine oil or carbonization of the refrigerating machine oil, thereby increasing the wear of the moving parts of the compressor. Effectively improve the service life of the moving parts of the compressor, improve the overall reliability of the product, and improve the satisfaction of the user; When the judgment result of the judgment unit is no, the unit controls the electric heating device to work, so that the air conditioner continues to defoase in the heating mode, thereby ensuring the timeliness and thoroughness of the defrosting, and avoiding the defrosting and the outdoor heat exchanger is easy. The risk of icing, ensuring good defrosting and heating effects, and improving the comfort of the user using the air conditioner. Further, the temperature of the heat accumulator is at least one of the following or a combination thereof, but is not limited thereto: the temperature of the heat storage material, the surface temperature of the heat accumulator, the internal temperature of the heat accumulator, and various expression forms of the temperature of the heat accumulator can satisfy different Heaters, different heat storage materials, different air conditioners and different user needs, a wide range of applications.

In any one of the above aspects, preferably, the recording unit is configured to record a duration of stopping the operation of the electric heating element, and send a return signal to the control unit when the first preset time length is reached; the control unit is further configured to return according to the Signal, return and re-control the electric heating element work.

In the technical solution, the recording unit records the length of time when the electric heating element stops working, and when the first preset time length is reached, sends a return signal to the control unit, and the control unit returns and re-controls the electric heating element according to the return signal, so that The electric heating element stops working, the regenerator has enough time to cool down, and after the time reaches the first preset time, the temperature is sufficiently reduced, and the electric heating element is re-controlled, so that the air conditioner re-defenses in the heating mode. In addition, the timeliness and thoroughness of the defrosting are ensured, the defrosting effect and the heating effect are ensured, the comfort of the user using the air conditioner is improved, and the user experience is improved.

In any of the above technical solutions, preferably, the control unit is further configured to return and restart the determining unit when the electric heating device is controlled to stop working.

In the technical solution, when the control unit stops the operation of the electric heating element, the returning and restarting determining unit determines whether the temperature of the regenerator is greater than a preset temperature, so that the system can determine the temperature of the regenerator and the preset temperature in real time. The result is an accurate and timely control of the working state of the electric heating element, and when the judgment result of whether the regenerator temperature is greater than the preset temperature is no, the electric heating device is controlled to make the air conditioner continue to defrosting in the heating mode, ensuring The timeliness and thoroughness of the frost ensure a good defrosting effect and heating effect, improve the comfort of the user using the air conditioner, and enhance the user experience.

In any one of the above aspects, preferably, the control unit further includes: a first detecting unit, configured to detect a system parameter of the air conditioner when the air conditioner is defrosted in the heating mode; and a first determining unit, configured to determine the system Whether the parameter satisfies the preset condition; the first control unit is configured to control the electric heating device to heat the heat accumulator when the determination result of the first determining unit is YES, when the judgment result of the first determining unit is no, Return and restart the first judgment unit.

In the technical solution, when the first detecting unit defrosses in the air conditioner heating mode, the system parameter of the air conditioner is detected, and the first determining unit determines whether the system parameter satisfies the preset condition, and the first control unit determines the first When the judgment result of the unit is YES, the electric heating device is controlled to heat the heat accumulator, so that the air conditioner performs defrosting in the heating mode, and when the preset condition is satisfied, the regenerator is heated to ensure the regenerator There is enough energy to store heat, so as to ensure the outdoor heat exchanger to quickly and thoroughly defrosting, to ensure good heating effect and defrosting effect, to improve user comfort and improve user satisfaction, through the first control unit When the determination result of the first judging unit is no, the first judging unit is returned and restarted, so that the air conditioner can control the electric heating element to start working in real time and accurately according to the judgment result when the defrosting is performed in the heating mode, thereby avoiding the failure to reach The preset condition controls the electric heating element to waste energy, and at the same time avoids controlling the electric heating element after the preset condition has been reached for a long time, so that the regenerator is Insufficient amount, the defrosting effect and heating effect are not good, the outdoor heat exchanger has the risk of icing, affecting the user's comfort, thus ensuring good defrosting effect and heating effect, improving user comfort and Satisfaction.

In this technical solution, the system parameter is at least one of the following or a combination thereof but is not limited thereto: the temperature of the regenerator, the temperature of the condenser, the running time of the compressor, the operating frequency of the compressor, The various expressions of the parameters can meet the needs of different air conditioners, different heat storage components, different compressors and different customers, and have a wide range of applications.

In the above technical solution, preferably, the preset temperature is at least one of the following: a relationship of a compressor parameter or a fixed value.

In another embodiment of the present invention, an air conditioner is further provided, comprising the defrosting control system according to any one of the above aspects.

An air conditioner according to an embodiment of the present invention includes the defrosting control system according to any one of the above aspects. The air conditioner provided by the present invention is provided with the defrosting control system described in the second embodiment, and thus has all the beneficial technical effects of the defrosting control system of the second embodiment, and details are not described herein again.

Additional aspects and advantages of the invention will be apparent from the description of the invention.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1a is a schematic flow chart of a defrosting control method in an embodiment of the present invention;

1b is a schematic flow chart of a defrosting control method in another embodiment of the present invention;

Figure 2a is a schematic block diagram of a defrosting control system in one embodiment of the present invention;

Figure 2b is a schematic block diagram of a defrosting control system in another embodiment of the present invention;

Figure 3 is a schematic block diagram of an air conditioner in one embodiment of the present invention.

detailed description

The present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a full understanding of the invention, but the invention may be practiced otherwise than as described herein. Limitations of the embodiments.

A defrosting control method, a defrosting control system, and an air conditioner according to some embodiments of the present invention are described below with reference to FIGS. 1a through 3.

As shown in FIG. 1a, according to a first aspect of the present invention, a defrosting control method, such as the defrosting control method of the embodiment of the present invention shown in FIG. 1a, is shown. include:

Step S102, when the air conditioner is defrosting in the heating mode, controlling the electric heating device to heat the regenerator;

Step S104, detecting a temperature of the regenerator;

Step S106, determining whether the temperature of the heat accumulator is greater than a preset temperature;

In step S108, when the result of the determination in step S106 is YES, the electric heating element is stopped to operate, and if the result of the determination in step S106 is NO, the flow returns to step S102.

The defrosting control method provided by the embodiment of the first aspect of the present invention controls the electric heating element to heat the regenerator when the defrosting is performed in the heating mode by the air conditioner, so that the air conditioner defrosts in the heating mode, so that The refrigerant sufficiently absorbs heat and increases the flow when passing through the heat accumulator heated by the electric heating member The temperature of the refrigerant in the indoor heat exchanger ensures the good heating effect and solves the problem of insufficient heat in the regenerator. At the same time, the high temperature refrigerant that migrates from the indoor heat exchanger to the outdoor heat exchanger is beneficial to the outdoor heat transfer. The defrosting is carried out to ensure the rapid and thorough defrosting of the outdoor heat exchanger, avoiding the reversal of the four-way valve, so that the defrosting of the air conditioner in the cooling mode makes the indoor temperature fluctuation greatly affect the user's comfort, and effectively improves the user's comfort. Degree, improve user satisfaction; by detecting the temperature of the regenerator, and judging whether the temperature of the regenerator is greater than the preset temperature, when the judgment result is YES, control the electric heating to stop working, avoiding the temperature of the regenerator being too high and causing freezing The viscosity of the oil is small or the carbon of the refrigerating machine oil is increased, which increases the wear of the moving parts of the compressor, effectively improves the service life of the moving parts of the compressor, improves the overall reliability of the product, and improves the satisfaction of the user; when the judgment result is no Control the operation of the electric heating parts, so that the air conditioner continues to defoase in the heating mode, thereby ensuring the timeliness and thoroughness of the defrosting, and avoiding Not clean the outdoor heat exchanger is easy icing risk, ensure good defrosting effect and the heating effect, the use of air conditioners and enhance the user comfort. Further, the temperature of the heat accumulator is at least one of the following or a combination thereof, but is not limited thereto: the temperature of the heat storage material, the surface temperature of the heat accumulator, the internal temperature of the heat accumulator, and various expression forms of the temperature of the heat accumulator can satisfy different Heaters, different heat storage materials, different air conditioners and different user needs, a wide range of applications.

FIG. 1 is a schematic flowchart of a defrosting control method according to an embodiment of the present invention, further comprising:

In step S110, the length of time during which the electric heating element stops working is recorded, and when the first preset time period is reached, the electric heating element is returned and re-controlled.

The defrosting control method provided by the invention records the length of time during which the electric heating element stops working, and when the first preset time period is reached, returns and re-controls the operation of the electric heating element, so that the electric heating element stops working, and the regenerator has enough The time is lowered, and after the time reaches the first preset time and the temperature is sufficiently reduced, the electric heating element is re-controlled, so that the air conditioner re-defroses in the heating mode, thereby ensuring the timeliness and thoroughness of the defrosting. It ensures a good defrosting effect and heating effect, improves the comfort of the user using the air conditioner, and enhances the user experience.

FIG. 1b is a schematic flow chart of a defrosting control method according to another embodiment of the present invention, the defrosting control method includes:

Step S1022, when the air conditioner defrosts in the heating mode, detecting system parameters of the air conditioner;

Step S1024, determining whether the system parameter meets the preset condition;

In step S1026, when the determination result in step 1024 is YES, the electric heating device is controlled to heat the heat accumulator. When the determination result in step 1204 is negative, the process returns to step S1204.

The defrosting control method provided by the invention detects the system parameter of the air conditioner when the defrosting is performed in the heating mode by the air conditioner, determines whether the system parameter satisfies the preset condition, and controls the electric heating component when the judgment result is YES. The heat accumulator is heated to cause the air conditioner to defrost in the heating mode, and when the preset condition is met, the regenerator is heated to ensure that the regenerator has sufficient energy to store heat, thereby ensuring the outdoor heat exchanger. Fast and thorough defrosting, ensuring good heating effect and defrosting effect, improving user comfort and improving user satisfaction. When the judgment result is no, return and re-determine whether the system parameters meet the preset conditions. The air conditioner can control the electric heating element to start working in real time and accurately according to the judgment result when the defrosting is performed in the heating mode, thereby avoiding the waste of energy when the electric heating part is not reached under the preset condition, and avoiding having reached the preset condition for a long time. After the operation of the electric heating element is controlled, the heat of the regenerator is insufficient, the defrosting effect and the heating effect are not good, and the outdoor heat exchanger has ice formation. Risks, user comfort, and thus ensure good defrosting effect and heating effect, to enhance the comfort and satisfaction of users.

FIG. 1b is a schematic flow chart of a defrosting control method according to another embodiment of the present invention, the defrosting control method further includes:

Step S104, detecting a temperature of the regenerator;

In step S108, when the result of the determination in step S106 is YES, the electric heating means is stopped to operate, and the process returns to step S106. If the result of the determination in step S106 is NO, the process returns to step S1026.

The defrosting control method provided by the invention returns and re-determines whether the temperature of the regenerator is greater than a preset temperature when the electric heating device is stopped, so that the system can accurately determine the regenerative temperature and the preset temperature in real time. And timely control the working state of the electric heating element, and then when the temperature of the regenerator is greater than the preset temperature, the control result is no, the electric heating device is controlled to make the air conditioner continue to defrosting in the heating mode to ensure the defrosting Timeliness and thoroughness ensure good defrosting effect and heating effect, improve the comfort of users using air conditioners, and enhance the user experience.

In one embodiment of the invention, preferably, the system parameter is at least one of the following or a combination thereof: the temperature of the regenerator, the temperature of the condenser, the operating time of the compressor, and the operating frequency of the compressor.

In this embodiment, the system parameter is at least one of the following or a combination thereof but is not limited thereto: temperature of the regenerator, temperature of the condenser, running time of the compressor, operating frequency of the compressor, various expressions of system parameters The form can meet the needs of different air conditioners, different heat storage components, different compressors and different customers, and has a wide range of applications.

In an embodiment of the invention, preferably, the preset temperature is at least one of: a relationship of a compressor parameter or a fixed value.

In this embodiment, the preset temperature is at least one of the following: but is not limited thereto: a relationship or a fixed value of the compressor parameter, and the plurality of expressions of the preset temperature can satisfy the requirements of different air conditioner compressors and different users. Wide range of applications. Further, the compressor parameters include at least one of the following or a combination thereof: compressor frequency, compressor power, compressor speed.

In an embodiment of the invention, preferably, the preset temperature is a fixed value T, wherein 105 ° C ≤ T ≤ 120 ° C.

In this embodiment, the preset temperature is a fixed value T, 105 ° C ≤ T ≤ 120 ° C, to avoid the preset temperature is too high to control the electric heating element to stop working, so that the temperature of the regenerator is too high, resulting in less viscosity or freezing of the refrigerating machine oil The carbonization of the engine oil increases the wear of the moving parts of the compressor, effectively improves the service life of the moving parts of the compressor, improves the overall reliability of the product, improves the satisfaction of the user, and avoids the preset temperature being too low to control the electric heating element to stop working. Influencing the timeliness and thoroughness of the defrosting, the defrosting effect and the heating effect are not good, affecting the comfort of the user, and the proper range of the preset temperature can ensure that the electric heating element stops working at an appropriate time, and the operation is ensured. Good defrosting effect and defrosting effect, improve user comfort and satisfaction, and effectively improve the service life of the moving parts of the compressor and improve the overall reliability of the product.

As shown in FIG. 2a, according to the second aspect of the present invention, a defrosting control system 200 is also proposed for an air conditioner. The defrosting control system 200 includes a control unit 202 for heating the air conditioner. When the defrosting is performed in the mode, the electric heating device is controlled to heat the regenerator; the detecting unit 204 is configured to detect the temperature of the regenerator; and the determining unit 206 is configured to determine whether the temperature of the regenerator is greater than a preset temperature; and the control unit 202 Further, when the determination result of the determination unit 206 is YES, the electric heating member is controlled to stop working, and when the determination result of the determination unit 206 is NO, the electric heating member is controlled to operate.

The defrosting control system 200 provided by the embodiment of the second aspect of the present invention controls the electric heating element to heat the regenerator when the defrosting device is defrosted in the heating mode of the air conditioner, so that the air conditioner is in the system. The defrosting in the hot mode makes the refrigerant fully absorb heat when passing through the regenerator heated by the electric heating member, thereby increasing the temperature of the refrigerant flowing to the indoor heat exchanger, thereby ensuring a good heating effect and solving the problem of insufficient heat of the regenerator. At the same time, the higher temperature refrigerant migrating from the indoor heat exchanger to the outdoor heat exchanger is beneficial to the outdoor heat exchanger to defrosting, ensuring that the outdoor heat exchanger is quickly and thoroughly defrosted, and avoiding the four-way valve reversing to make the air conditioner Defrost in the cooling mode causes the indoor temperature fluctuation to greatly affect the user's comfort, effectively improves the user's comfort and improves the user's satisfaction; the detection unit 204 detects the regenerator temperature, and the judging unit 206 determines the heat storage. If the temperature of the device is greater than the preset temperature, the control unit 202 controls the electric heating to stop working when the judgment result of the determining unit 206 is YES, avoiding the temperature of the regenerator being too high, causing the viscosity of the refrigerating machine oil to be small or the refrigerating machine oil to be carbonized, thereby increasing the compressor movement. The wear of the components effectively improves the service life of the moving parts of the compressor, improves the overall reliability of the product, and improves the satisfaction of the user. When the judgment result of the determination unit 206 is no, the control unit 202 controls the electric heating element to work, so that the air conditioner continues to defoase in the heating mode, thereby ensuring the timeliness and thoroughness of the defrosting, and avoiding the defrosting is not clean. The outdoor heat exchanger is easy to freeze, ensuring good defrosting effect and heating effect, and improving the comfort of the user using the air conditioner. Further, the temperature of the heat accumulator is at least one of the following or a combination thereof, but is not limited thereto: the temperature of the heat storage material, the surface temperature of the heat accumulator, the internal temperature of the heat accumulator, and various expression forms of the temperature of the heat accumulator can satisfy different Heaters, different heat storage materials, different air conditioners and different user needs, a wide range of applications.

The defrosting control system 200 shown in FIG. 2a, preferably, the recording unit 208 is configured to record the length of time when the electric heating element stops working, and send a return signal to the control unit 202 when the first preset time length is reached; the control unit 202 is further configured to return and re-control the operation of the electric heating element according to the return signal.

The defrosting control system 200 provided by the present invention records the length of time when the electric heating element stops working by the recording unit 208, and sends a return signal to the control unit 202 when the first preset time length is reached, and the control unit 202 returns and restarts according to the return signal. Control the electric heating device to work, so that the electric heating device stops working, the regenerator has enough time to cool down, and after the time reaches the first preset time, the temperature is sufficiently reduced, and then the electric heating device is re-controlled, so that the air conditioner is re-established. The defrosting is carried out in the hot mode, thereby ensuring the timeliness and thoroughness of the defrosting, ensuring a good defrosting effect and heating effect, improving the comfort of the user using the air conditioner, and improving the user experience.

As shown in Fig. 2a, the defrosting control system 200, preferably, the control unit 202 is further configured to return and restart the judging unit 206 when the electric heating member is stopped to operate.

The defrosting control system 200 provided by the present invention, when the control electric heating device stops working by the control unit 202, returns and restarts the determining unit 206 to determine whether the regenerator temperature is greater than a preset temperature, so that the system can be based on the regenerator temperature in real time. The judgment result of the preset temperature is used to accurately and timely control the working state of the electric heating member, and when the judgment result of whether the regenerator temperature is greater than the preset temperature is no, the electric heating device is controlled to operate the air conditioner to continue in the heating mode. The defrosting guarantees the timeliness and thoroughness of the defrosting, ensures a good defrosting effect and heating effect, improves the comfort of the user using the air conditioner, and enhances the user experience.

The defrosting control system 200 shown in FIG. 2b, preferably, the control unit 202 further includes: a first detecting unit 2202 detecting unit 204, configured to detect a system parameter of the air conditioner when the air conditioner is defrosting in the heating mode; The first determining unit 2204 is configured to determine whether the system parameter satisfies the preset condition. The first control unit 2206 controls the unit 202, and is configured to control the electric heating when the first determining unit 2204 determines that the determining result of the unit 206 is YES. When the first judgment unit 2204 determines that the judgment result of the unit 206 is NO, the first judgment unit 2204 returns and restarts the first judgment unit 2204 judgment unit 206.

The defrosting control system 200 provided by the present invention detects the system parameters of the air conditioner when the detecting unit 204 detects the defrosting in the air conditioner heating mode by the first detecting unit 2202, and the first determining unit 2204 determines whether the unit 206 determines whether the system parameters are satisfied. Preset condition, the first control unit 2206, when the first determining unit 2204 determines that the determination result of the unit 206 is YES, controls the electric heating device to heat the regenerator, so that the air conditioner is heated in the heating mode. Frost, when the preset conditions are met, heat the regenerator to ensure that the regenerator has enough energy to store heat, so as to ensure that the outdoor heat exchanger is quickly and thoroughly defrosted, ensuring good heating effect and defrosting effect. When the user's use comfort is improved and the user's satisfaction is improved, the first control unit 2206 controls the unit 202 to return to the first determination unit 2204 when the first determination unit 2204 determines that the determination result of the unit 206 is NO. The unit 206 enables the air conditioner to start the work in real time and accurately according to the judgment result when the air conditioner is defrosted in the heating mode, and avoids Exceeding the preset conditions to control the electric heating parts to waste energy, and avoiding the control of the electric heating parts after the preset conditions have been reached for a long time, so that the heat of the regenerator is insufficient, so that the defrosting effect and the heating effect are not good, outdoor The heat exchanger has the risk of icing, which affects the user's comfort, thus ensuring good defrosting effect and heating effect, and improving user comfort and satisfaction.

As shown in FIG. 3, in another embodiment of the present invention, an air conditioner 300 is further provided, including the defrosting control system 200 according to any one of the above aspects.

An air conditioner 300 according to an embodiment of the present invention includes the defrosting control system 200 according to any one of the above aspects. The air conditioner provided by the present invention is provided with the defrosting control system 200 according to the embodiment of the second aspect, and thus has the defrosting control system 200 of the second embodiment. All beneficial technical effects will not be described here.

In an embodiment of the invention, the air conditioner further comprises: a compressor; an indoor heat exchanger; an outdoor heat exchanger; a four-way valve disposed between the indoor heat exchanger and the outdoor heat exchanger, and two of the four-way valve One interface communicates with the outlet of the compressor and one end of the indoor heat exchanger, and the other two interfaces of the four-way valve communicate with the inlet of the compressor and one end of the outdoor heat exchanger; the throttle device is disposed in the indoor heat exchanger The other end is connected between the other end of the outdoor heat exchanger; the heat storage assembly is disposed between the four-way valve and the outdoor heat exchanger, and the heat storage assembly includes a heat accumulator, an electric heating element and a temperature sensor, and the heat accumulator is used for accommodating The heat storage material is disposed on the heat accumulator for heating the heat accumulator, and the temperature sensor is disposed on the heat accumulator for detecting the temperature of the heat accumulator.

The air conditioner provided by the invention provides a heat storage component between the four-way valve and the outdoor heat exchanger, and when the air conditioner reaches the defrosting condition in the heating mode, the control shut-off valve is closed, and the electric heating device works on the heat accumulator Heating is performed so that the heat accumulator stores heat through the stored heat storage material, and the electric heating element heats the heat accumulator to store sufficient heat of the heat storage material, and the refrigerant sufficiently absorbs heat when passing through the heat accumulator heated by the electric heating element, thereby improving The temperature of the refrigerant flowing to the indoor heat exchanger ensures a good heating effect, solves the problem of insufficient heat of the regenerator, and at the same time, the temperature of the refrigerant migrating from the indoor heat exchanger to the outdoor heat exchanger is high, so that the air conditioner Defrost can also be performed in the heating mode, and the higher temperature refrigerant is beneficial to the outdoor heat exchanger for defrosting, ensuring that the outdoor heat exchanger is quickly and thoroughly defrosted, and avoiding the four-way valve reversing to make the air conditioner in the cooling mode. The temperature fluctuation inside the defrosting room greatly affects the user's comfort, effectively improves the user's comfort and improves the user's satisfaction; through the temperature sensing set on the heat accumulator Detecting the temperature of the regenerator and determining whether the temperature of the regenerator is greater than the preset temperature. When the judgment result is YES, controlling the electric heating to stop working, avoiding the temperature of the regenerator being too high, resulting in less viscosity of the refrigerating machine oil or carbonization of the refrigerating machine oil, increasing compression The wear of the moving parts of the machine effectively improves the service life of the moving parts of the compressor, improves the overall reliability of the product, and improves the satisfaction of the user; by controlling the electric heating part when the judgment result is no, the air conditioner is Continue to defrosting in the heating mode, thus ensuring the timeliness and thoroughness of the defrosting, avoiding the risk that the outdoor heat exchanger is easy to freeze due to defrosting, ensuring good defrosting effect and heating effect, and improving the user's use of air conditioning. Comfort and satisfaction.

In a specific embodiment, the air conditioner is a heat pump type air conditioner. In the heating mode, the indoor heat exchanger is a condenser, the outdoor heat exchanger is an evaporator, and the refrigerant is converted into a high temperature and high pressure gas by a compressor compression, and passes through four The valve enters the condenser, and becomes a medium-temperature high-pressure liquid after the condenser absorbs heat and releases heat. After passing through the throttling device, the liquid becomes a low-temperature and low-pressure liquid. After passing through the evaporator to absorb heat and cool, it becomes a low-temperature and low-pressure gas, returns to the compressor through the four-way valve, and then continues to circulate. In the cooling mode, the indoor heat exchanger is an evaporator, and the outdoor heat exchanger is a condenser. The refrigerant is converted into a high-temperature and high-pressure gas by compressor compression, enters the outdoor condenser, and becomes a medium-temperature high pressure after the condenser absorbs heat and releases heat. After passing through the throttling device, the liquid becomes a low-temperature and low-pressure liquid. After passing through the evaporator to absorb heat and cool, it becomes a low-temperature and low-pressure gas, returns to the compressor through the four-way valve, and then continues to circulate.

In the present invention, the term "plurality" means two or more, unless specifically defined otherwise. The terms "installation", "connected", "connected", "fixed" and the like should be understood broadly. For example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; "connected" may They are directly connected or indirectly connected through an intermediary. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in the present invention. At least one embodiment or example. In the present specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A defrosting control method for an air conditioner, characterized in that the air conditioner includes a compressor, a four-way valve, an outdoor heat exchanger, a heat storage assembly, and a shutoff valve, the heat storage assembly and the cutoff a valve is disposed in parallel between the four-way valve and the outdoor heat exchanger, the heat storage assembly includes a heat accumulator and an electric heating member, and the heat storage assembly enables the air conditioner to be in a heating mode Defrosting, the defrosting control method includes:

When the air conditioner is defrosting in the heating mode, controlling the electric heating device to heat the regenerator;

Detecting the temperature of the regenerator;

Determining whether the temperature of the regenerator is greater than a preset temperature;

If so, the electric heating element is controlled to stop working, and if not, the electric heating element is controlled to operate.
The defrosting control method according to claim 1, further comprising:

Recording the length of time during which the electric heating element stops working, and returning and re-controlling the electric heating element when the first preset time period is reached.
The defrosting control method according to claim 1, further comprising:

When the electric heating member is controlled to stop working, it is returned and re-determined whether the regenerator temperature is greater than the preset temperature.
The defrosting control method according to any one of claims 1 to 3, wherein the air conditioner controls the operation of the electric heating member to heat the regenerator when the heating mode is defrosted The specific steps include:

The air conditioner detects a system parameter of the air conditioner when defrosting in a heating mode;

Determining whether the system parameter meets a preset condition;

If yes, controlling the operation of the electric heating element to heat the regenerator, and if not, returning and re-determining whether the system parameter satisfies a preset condition.
The defrosting control method according to claim 4, wherein the system parameter is at least one of the following or a combination thereof:

The temperature of the regenerator, the temperature of the condenser, the operating time of the compressor, the pressure The operating frequency of the reducer.
The defrosting control method according to claim 1, wherein

The preset temperature is at least one of the following: a relationship or a fixed value of the compressor parameter.
The defrosting control method according to claim 6, wherein

The preset temperature is a fixed value T, wherein 105 ° C ≤ T ≤ 120 ° C.
A defrosting control system for an air conditioner, characterized in that the defrosting control system comprises:

a control unit, configured to control the operation of the electric heating element to heat the regenerator when the air conditioner is defrosting in a heating mode;

a detecting unit, configured to detect the temperature of the heat accumulator;

a determining unit, configured to determine whether the temperature of the heat accumulator is greater than a preset temperature;

The control unit is further configured to: when the determination result of the determining unit is YES, control the electric heating element to stop working, and when the determining result of the determining unit is negative, control the electric heating element to operate.
The defrosting control system according to claim 8, further comprising:

a recording unit, configured to record a length of time when the electric heating element stops working, and send a return signal to the control unit when the first preset time length is reached;

The control unit is further configured to return and re-control the operation of the electric heating element according to the return signal.
The defrosting control system according to claim 8, wherein the control unit is further configured to return and restart the determining unit when the electric heating member is controlled to stop working.
The defrosting control system according to any one of claims 8 to 10, wherein the control unit further comprises:

a first detecting unit, configured to detect a system parameter of the air conditioner when the air conditioner is defrosting in a heating mode;

a first determining unit, configured to determine whether the system parameter meets a preset condition;

a first control unit, configured to control the operation of the electric heating element to heat the heat accumulator when the determination result of the first determining unit is YES, when the judgment result of the first determining unit is negative Returning and restarting the first determining unit.
Defrost control system according to claim 11 wherein said system parameters Is at least one of the following or a combination thereof:

The temperature of the heat accumulator, the temperature of the condenser, the operating time of the compressor, and the operating frequency of the compressor.
The defrosting control system according to claim 8, wherein

The preset temperature is at least one of the following: a relationship or a fixed value of the compressor parameter.
The defrosting control system according to claim 13, wherein

The preset temperature is a fixed value T, wherein 105 ° C ≤ T ≤ 120 ° C.
An air conditioner, comprising:

A defrosting control system according to any one of claims 8 to 14.