WO2023071152A1

WO2023071152A1 - Air conditioner defrosting control method, control apparatus, and air conditioner

Info

Publication number: WO2023071152A1
Application number: PCT/CN2022/093293
Authority: WO
Inventors: 尹义金; 矫立涛; 冯景学; 周星宇; 刘帅; 王伟锋; 李江飞
Original assignee: 青岛海尔空调器有限总公司; 青岛海尔空调电子有限公司; 海尔智家股份有限公司
Priority date: 2021-10-28
Filing date: 2022-05-17
Publication date: 2023-05-04
Also published as: CN114061030A

Abstract

An air conditioner defrosting control method, a control apparatus, and an air conditioner. The air conditioner defrosting control method comprises: obtaining a current frost thickness of a first outdoor heat exchanger (2); and when the frost thickness is greater than or equal to a preset thickness, controlling an air conditioner to perform a defrosting operation on the first outdoor heat exchanger (2), and controlling a second outdoor heat exchanger (3) to start for continuing to deliver heat to an indoor environment. The first outdoor heat exchanger (2) is defrosted without affecting the heating of the indoor environment, so that the user experience is improved.

Description

Air conditioner defrosting control method, control device and air conditioner

Cross References to Related Applications

This application claims the priority of the Chinese patent application with the application number 202111265911.3 and titled "An air-conditioner defrosting control method, control device, and air conditioner" filed on October 28, 2021, which is incorporated herein by reference in its entirety .

technical field

The present application relates to the technical field of air conditioners, in particular to an air conditioner defrosting control method, a control device and an air conditioner.

Background technique

With the rapid development of society and the continuous improvement of people's living standards, people's requirements for the quality of life are getting higher and higher. As an important electrical device, air conditioners have gradually entered thousands of households and are used by everyone. Usually the well-known function of the air conditioner is the cooling and heating function. However, when the air conditioner is used in winter, the outdoor opportunity will frost as the air conditioner runs for a long time. Cause damage to the air conditioner compressor and reduce the performance of the air conditioner.

When the air conditioner is running at low temperature for a period of time, it will be severely frosted. At this time, the external unit of the air conditioner needs to be defrosted; However, there is a problem that heat cannot be sent to the room during defrosting, which causes fluctuations in the temperature of the indoor environment and affects user comfort.

Contents of the invention

The application provides an air conditioner defrosting control method, a control device and an air conditioner, which are used to solve the problem in the prior art that heat cannot be sent to the room during defrosting, resulting in temperature fluctuations in the indoor environment and affecting user comfort.

The present application provides an air conditioner defrosting control method, including: obtaining the current frosting thickness of the first outdoor heat exchanger; when the frosting thickness is greater than or equal to the first preset thickness, controlling the air conditioner to replace the first outdoor heat exchanger The heat exchanger performs a defrosting operation, and controls the second outdoor heat exchanger to start.

According to an air conditioner defrosting control method provided in the present application, it further includes: when the frosting thickness is less than the first preset thickness, controlling the air conditioner to operate in an initial state.

According to an air conditioner defrosting control method provided in this application, when the frosting thickness is greater than or equal to the first preset thickness, the air conditioner is controlled to perform a defrosting operation on the first outdoor heat exchanger, and the second outdoor heat exchanger is controlled to The starting of the device further includes: obtaining the frosting thickness of multiple preset positions on the current first outdoor heat exchanger; determining the frosting thickness based on the number of the preset positions and the frosting thicknesses of the multiple preset positions Average value; when the average value is greater than or equal to the first preset thickness, the air conditioner is controlled to perform a defrosting operation on the first outdoor heat exchanger, and the second outdoor heat exchanger is controlled to start.

According to an air conditioner defrosting control method provided in the present application, controlling the air conditioner to perform a defrosting operation on the first outdoor heat exchanger includes: controlling a heating device to heat the first outdoor heat exchanger.

According to an air conditioner defrosting control method provided in this application, controlling the heating device to heat the first outdoor heat exchanger includes: when the frosting thickness is greater than or equal to the first preset thickness and less than the second preset thickness In the case of , the heating device is controlled to heat the first outdoor heat exchanger with the first preset power; when the frosting thickness is greater than or equal to the second preset thickness, the heating device is controlled to power to heat the first outdoor heat exchanger; wherein the first preset power is smaller than the second preset power.

According to an air conditioner defrosting control method provided in this application, controlling the heating device to heat the first outdoor heat exchanger further includes: acquiring the current coil temperature of the first outdoor heat exchanger; In the case of a preset temperature, the heating device is controlled to heat the first outdoor heat exchanger with a third preset power; when the coil temperature is greater than or equal to the first preset temperature and less than the second preset temperature In this case, the heating device is controlled to heat the first outdoor heat exchanger with the fourth preset power; when the coil temperature is greater than or equal to the second preset temperature and less than the frost point temperature, the heating device is controlled to The first outdoor heat exchanger is heated with a fifth preset power; wherein, the third preset power is greater than the fourth preset power, and the fourth preset power is greater than the fifth preset power.

According to an air conditioner defrosting control method provided in the present application, it further includes: when the defrosting time is less than or equal to the first preset duration, and the coil temperature is greater than or equal to the third preset temperature, controlling the defrosting of the air conditioner The operation is turned off; or, when the defrosting time is greater than or equal to a second preset time length, the defrosting operation of the air conditioner is controlled to be turned off, wherein the second preset time length is longer than the first preset time length; or, when the frosting thickness In the case of being less than or equal to a third preset thickness, the defrosting operation is controlled to be turned off, wherein the third preset thickness is smaller than the first preset thickness.

According to an air conditioner defrosting control method provided in the present application, when the defrosting time is less than or equal to the first preset duration, and the coil temperature is greater than or equal to the third preset temperature, the defrosting operation of the air conditioner is controlled to be turned off and further Including: when the defrosting time is less than or equal to a third preset duration and the coil temperature is greater than a fourth preset temperature, controlling the defrosting operation of the air conditioner to be turned off, wherein the third preset duration is shorter than the first preset duration For a preset duration, the fourth preset temperature is greater than the third preset temperature.

The present application also provides an air conditioner control device, including: an acquisition module: used to acquire the current frosting thickness of the first outdoor heat exchanger; a control module: used for when the frosting thickness is greater than or equal to the first preset thickness Next, the air conditioner is controlled to defrost the first outdoor heat exchanger, and the second outdoor heat exchanger is controlled to start.

The present application also provides an air conditioner, including the above-mentioned air conditioner control device.

The present application provides an air conditioner defrosting control method, control device, and air conditioner. By obtaining the current frosting thickness of the first outdoor heat exchanger, the current frosting situation of the first indoor heat exchanger is known; when the frosting thickness is greater than When the thickness is equal to the first preset thickness, control the air conditioner to defrost the first outdoor heat exchanger, control the start of the second outdoor heat exchanger, and continue to deliver heat to the indoor environment through the second outdoor heat exchanger; Disconnect the indoor heat exchanger from the first outdoor heat exchanger, connect the indoor heat exchanger to the second outdoor heat exchanger, continue heating the indoor environment, and then defrost the first outdoor heat exchanger; This method of controlling the air conditioner to defrost the first outdoor heat exchanger according to the thickness of frosting is simple, and it can defrost the first outdoor heat exchanger without affecting the heating of the indoor environment, avoiding damage to the first outdoor heat exchanger. The defrosting of the heat exchanger causes the indoor ambient temperature to fluctuate, which affects the comfort of the user, thereby improving the user experience.

Description of drawings

In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are the For some embodiments of the present invention, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

FIG. 1 is a schematic flow chart of an air-conditioning defrosting control method provided by the present application;

Fig. 2 is a structural schematic diagram of the air-conditioning defrosting system provided by the present application;

FIG. 3 is a schematic structural diagram of the electronic device provided by the present application;

Reference signs:

1: Indoor heat exchanger; 2: The first outdoor heat exchanger; 3: The second outdoor heat exchanger;

4: Compressor; 5: Heating device.

Detailed ways

In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings in this application. Obviously, the described embodiments are part of the embodiments of this application , but not all examples. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

An air conditioner defrosting control method, control device and air conditioner provided by the present application will be described below with reference to FIGS. 1 to 3 .

An air conditioner defrosting control method provided in this embodiment includes: Step 100: Obtain the current frosting thickness of the first outdoor heat exchanger; Step 200: When the frosting thickness is greater than or equal to the first preset thickness, control The air conditioner performs a defrosting operation on the first outdoor heat exchanger, and controls the start of the second outdoor heat exchanger.

The air conditioner provided in this embodiment includes an indoor heat exchanger, a first outdoor heat exchanger, and a second outdoor heat exchanger. When the air conditioner is started, the indoor heat exchanger is connected to the first outdoor heat exchanger to heat the indoor environment.

Referring to FIG. 1 , in the air-conditioning defrosting control method provided by this embodiment, step 100 is to obtain the current frosting thickness of the first outdoor heat exchanger; specifically, this embodiment detects the current frosting thickness of the first outdoor heat exchanger through a thickness monitoring device. frosting thickness, and then obtain the current frosting thickness of the first outdoor heat exchanger.

Further, step 200: when the frosting thickness is greater than or equal to the first preset thickness, control the air conditioner to perform a defrosting operation on the first outdoor heat exchanger, and control the second outdoor heat exchanger to start; The frosting thickness of an outdoor heat exchanger is compared with the first preset thickness, and if the current frosting thickness of the first outdoor heat exchanger is greater than or equal to the first preset thickness, at this time, the frosting thickness on the first outdoor heat exchanger The frosting thickness affects the heating effect of the first outdoor heat exchanger on the indoor environment. Control the air conditioner to disconnect the indoor heat exchanger from the first outdoor heat exchanger, and perform defrosting operations on the first outdoor heat exchanger. The control indoor heat exchanger is connected to the second outdoor heat exchanger, and the second outdoor heat exchanger is controlled to continue to send heat to the indoor environment.

In a specific embodiment, the first preset thickness is set to 1.5 mm, and when the frosting thickness of the first outdoor heat exchanger is 2 mm, which is greater than the first preset thickness of 1.5 mm, the air conditioner is controlled to control the first outdoor heat exchanger Execute the defrosting operation, control the start of the second outdoor heat exchanger, and continue to supply heat to the indoor environment; this control method does not affect the second outdoor heat exchanger to continue to supply heat to the indoor environment when defrosting the first outdoor heat exchanger. The ambient heat is sent to achieve the effect that the first outdoor heat exchanger for defrosting does not heat, and the second outdoor heat exchanger for heating does not defrost.

The air conditioner defrosting control method provided in this embodiment knows the current frosting situation of the first indoor heat exchanger by acquiring the current frosting thickness of the first outdoor heat exchanger; when the frosting thickness is greater than or equal to the first preset thickness In this case, control the air conditioner to defrost the first outdoor heat exchanger, control the start of the second outdoor heat exchanger, and continue to send heat to the indoor environment through the second outdoor heat exchanger; The connection of the first outdoor heat exchanger connects the indoor heat exchanger with the second outdoor heat exchanger, continues to heat the indoor environment, and then defrosts the first outdoor heat exchanger; this is controlled according to the frosting thickness The method for the air conditioner to defrost the first outdoor heat exchanger is simple, and it can defrost the first outdoor heat exchanger without affecting the heating of the indoor environment, so as to avoid indoor air pollution caused by defrosting the first outdoor heat exchanger Ambient temperature fluctuations affect user comfort and improve user experience.

In this embodiment, the first preset thickness is not limited to 1.5 mm, but may also be 3 mm, etc., which can be limited according to the user's use situation, and it only needs to meet the user's needs.

On the basis of the above embodiments, the air conditioner defrosting control method provided by this embodiment further includes: when the frosting thickness is less than the first preset thickness, controlling the air conditioner to run in the initial state; that is, obtaining the current first outdoor heat exchange If the frosting thickness of the first outdoor heat exchanger is less than the first preset thickness, the air conditioner is controlled to continue running in the initial state (the operating mode when the air conditioner is started).

In a specific embodiment, the thickness monitoring device detects the frosting thickness of the first outdoor heat exchanger, and obtains that the frosting thickness of the first outdoor heat exchanger is 0.5 mm. At this time, the frosting thickness of the first outdoor heat exchanger The thickness is less than the first preset thickness of 1.5 mm, that is, at this time, the frosting of the first outdoor heat exchanger has little influence on the heating effect of the first outdoor heat exchanger, or the temperature fluctuation of the indoor environment does not affect the comfort of the user and does It needs to be defrosted, and the air conditioner is controlled to continue running in the current operating mode.

In this embodiment, by setting the first preset temperature, the operation of the air conditioner is controlled according to the current frosting thickness of the first outdoor heat exchanger. The outdoor heat exchanger performs a defrosting operation, controls the start of the second outdoor heat exchanger, and continues to supply heat to the indoor environment, avoiding the indoor environment temperature fluctuation caused by the defrosting of the first outdoor heat exchanger, which affects the comfort of users; When the frosting thickness is less than the first preset thickness, the frosting thickness at this time has little influence on the heating effect of the first outdoor heat exchanger or does not affect user comfort, and the air conditioner is controlled to continue running in the current operating mode.

On the basis of the above embodiments, when the frosting thickness is greater than or equal to the first preset thickness, controlling the air conditioner to perform a defrosting operation on the first outdoor heat exchanger, and controlling the start of the second outdoor heat exchanger further includes: obtaining the current The frosting thickness of multiple preset positions on the first outdoor heat exchanger; based on the number of preset positions and the frosting thickness of multiple preset positions, determine the average value of frosting thickness; when the average value is greater than or equal to the first preset When the thickness is set, the air conditioner is controlled to defrost the first outdoor heat exchanger, and the second outdoor heat exchanger is controlled to start.

In a preferred embodiment, thickness monitoring devices are provided at the four corners and the middle of the first outdoor heat exchanger, that is, there are 5 thickness monitoring devices in total, wherein the thickness monitoring devices can be infrared detectors for detecting The frosting thickness at the preset position on the first outdoor heat exchanger; the current frosting thickness at the five preset positions on the first outdoor heat exchanger is 1.5mm, 1.7mm, 2.0mm, 1.2mm, and 0.9mm; Further calculate the average value of frosting thickness at these five positions: 1.5mm+1.7mm+2.0mm+1.2mm+2.9mm=9.3mm; 9.3mm/5=1.86mm, which is the current first outdoor heat exchanger The average value of the frosting thickness is 1.86mm; at this time, the average value of the frosting thickness of the first outdoor heat exchanger is greater than the first preset thickness of 1.5mm, and the frosting thickness affects the heating effect of the first outdoor heat exchanger. Control the air conditioner to perform the defrosting operation on the first outdoor heat exchanger; at the same time control the start of the second outdoor heat exchanger to continue to supply heat to the indoor environment, avoiding the indoor environment temperature fluctuation caused by defrosting the first outdoor heat exchanger, affect user comfort.

When the average value is less than the first preset thickness, the air conditioner is controlled to operate in an initial state. Specifically, the average value of the frosting thickness on the first outdoor heat exchanger is 1.2 mm and less than 1.5 mm, which does not affect the heating effect of the first outdoor heat exchanger or the impact of the average value of the frosting thickness on users Smaller, control the air conditioner to run in the initial state.

In this embodiment, the average value of the frosting thickness on the first outdoor heat exchanger is determined by obtaining the frosting thickness at different preset positions on the first outdoor heat exchanger; based on the average value of the frosting thickness on the first outdoor heat exchanger The relationship between the value and the first preset thickness controls the operation of the air conditioner; that is, when the average value is greater than or equal to the first preset thickness, the air conditioner is controlled to perform a defrosting operation on the first outdoor heat exchanger, and the second outdoor heat exchanger is controlled to The heat exchanger starts and continues to deliver heat to the indoor environment; when the average value is less than the first preset thickness, the air conditioner is controlled to operate in the initial state; this control method is simple and can more accurately understand the temperature of the first outdoor heat exchanger. In case of frosting, control the air conditioner to perform defrosting operation on the first outdoor heat exchanger to prevent frost from affecting the heating effect. The ambient temperature fluctuates, affecting user comfort.

In this embodiment, the preset position is not specifically limited, and the frosting thickness at the preset position can be acquired at any position of the first heat exchanger.

On the basis of the above embodiments, controlling the air conditioner to perform a defrosting operation on the first outdoor heat exchanger includes: controlling a heating device to heat the first outdoor heat exchanger.

Specifically, the first outdoor heat exchanger and the second outdoor heat exchanger are respectively connected to the heating device, and when the frosting thickness of the first outdoor heat exchanger is greater than or equal to the first preset thickness, the air conditioner is controlled to disconnect the indoor heat exchanger. The connection between the heat exchanger and the first outdoor heat exchanger, the heating device is controlled to heat the first outdoor heat exchanger, and the frost on the first outdoor heat exchanger absorbs heat and melts; at the same time, the indoor heat exchanger and the second outdoor heat exchanger are controlled The heater is connected and continues to deliver heat to the indoor environment.

Further, when the frosting thickness on the second outdoor heat exchanger is greater than or equal to the first preset thickness, the air conditioner is controlled to disconnect the indoor heat exchanger from the second outdoor heat exchanger, and the heating device is controlled to operate on the second outdoor heat exchanger. The outdoor heat exchanger is heated, and the frost on the second outdoor heat exchanger absorbs heat and melts; at the same time, the indoor heat exchanger is controlled to be connected to the first outdoor heat exchanger, and the first outdoor heat exchanger is controlled to continue to deliver heat to the indoor environment.

In this embodiment, the heating device generates heat, so that the frost on the first outdoor heat exchanger or the second outdoor heat exchanger absorbs heat and melts, thereby achieving the purpose of defrosting; this control method is simple and can effectively defrost.

In this embodiment, the heating device is not specifically limited, and it may be a solar heating structure or an electric heating structure, and it only needs to heat and defrost the first outdoor heat exchanger or the second outdoor heat exchanger.

On the basis of the above embodiments, further, controlling the heating device to heat the first outdoor heat exchanger includes: when the thickness of the frosting is greater than or equal to the first preset thickness and less than the second preset thickness, controlling the heating The device heats the first outdoor heat exchanger with the first preset power; when the frosting thickness is greater than or equal to the second preset thickness, the heating device is controlled to heat the first outdoor heat exchanger with the second preset power ; wherein the first preset power is less than the second preset power.

In a specific embodiment, the first preset thickness is set to 1.5mm, the second preset thickness is 4mm; the first preset power is 800W, and the second preset power is 2500W; when the first outdoor heat exchange is detected When the frosting thickness of the first outdoor heat exchanger is 1.2mm, control the air conditioner to run in the initial state; when it is detected that the frosting thickness of the first outdoor heat exchanger is 2.0mm, control the heating device to supply 800W power to the first outdoor The heat exchanger is heated, so that the frost on the first outdoor heat exchanger absorbs heat and melts; at the same time, the second outdoor heat exchanger is controlled to start and continue to deliver heat to the indoor environment. When it is detected that the frosting thickness of the first outdoor heat exchanger is 6mm, the frosting thickness of the first outdoor heat exchanger is relatively thick at this time, and the heating device is controlled to heat the first outdoor heat exchanger with a power of 2500W , can accelerate the frost on the first outdoor heat exchanger to absorb heat and melt.

Further, after the heating device is controlled to heat the first outdoor heat exchanger with a power of 2500W for a period of time, and the thickness of frost on the first outdoor heat exchanger is 3.9 mm, the power of the heating device can be controlled to decrease at this time, That is, the heating device is controlled to continue heating the first outdoor heat exchanger with a power of 800W; this method of controlling the power of the heating device to heat the first outdoor heat exchanger is simple, uses resources rationally, and avoids waste of resources.

In this embodiment, according to the frosting thickness of the first outdoor heat exchanger, the heating device is controlled to heat and defrost the first outdoor heat exchanger with different heating power; when the frosting thickness is greater than the second preset thickness, Controlling the heating device to heat the first outdoor heat exchanger with the second preset power can shorten the defrosting time of the first outdoor heat exchanger; when the frosting thickness of the first outdoor heat exchanger is less than the second preset thickness Under certain circumstances, the power of the heating device is controlled to be reduced, so as to avoid the impact of excessive heating power on the first outdoor heat exchanger, and also save resources.

In this embodiment, there are no specific limitations on the second preset thickness, the first preset power, and the second preset power, which can be defined according to the actual situation, so that the second preset power is greater than the first preset power to satisfy users Just need it.

On the basis of the above embodiments, further, controlling the heating device to heat the first outdoor heat exchanger further includes: acquiring the current coil temperature of the first outdoor heat exchanger; when the coil temperature is lower than the first preset temperature In this case, the heating device is controlled to heat the first outdoor heat exchanger with the third preset power; when the coil temperature is greater than or equal to the first preset temperature and less than the second preset temperature, the heating device is controlled to Four preset powers are used to heat the first outdoor heat exchanger; when the coil temperature is greater than or equal to the second preset temperature and lower than the frost point temperature, the heating device is controlled to exchange heat with the fifth preset power for the first outdoor heat exchanger The heater is heated; wherein, the third preset power is greater than the fourth preset power, and the fourth preset power is greater than the fifth preset power.

In a specific embodiment, the first preset temperature is set to -20°C, the second preset temperature is set to -15°C, and the frost point temperature is set to 0°C; the third preset power is 2000W, and the fourth preset power is 1500W, the fifth preset power is 1000W; the coil temperature of the first outdoor heat exchanger is detected by the temperature monitoring device to obtain the coil temperature of the first outdoor heat exchanger; when the coil temperature is -25°C, At this time, the coil temperature is lower than the first preset temperature -20°C, and the heating device is controlled to heat and defrost the first outdoor heat exchanger with a power of 2000W; when the coil temperature is -18°C, the coil If the tube temperature is greater than the first preset temperature -20°C and less than the second preset temperature -15°C, the heating device is controlled to heat and defrost the first outdoor heat exchanger with a power of 1500W; when the detected coil temperature is In the case of -5°C, the coil temperature is greater than -15°C and less than the frost point temperature of 0°C, and the heating device is controlled to heat and defrost the first outdoor heat exchanger with a power of 1000W.

In this embodiment, by monitoring the coil temperature of the first outdoor heat exchanger, the heating device is controlled to heat and defrost the first outdoor heat exchanger according to the coil temperature; in this control method, the first outdoor heat exchanger is monitored according to the coil temperature. According to the frosting condition of the heater, the heating device is controlled to heat the first outdoor heat exchanger with different powers, which can speed up the defrosting speed, rationally utilize resources and avoid waste.

In this embodiment, there are no specific limitations on the first preset temperature, the second preset temperature, the frost point temperature, the third preset power, the fourth preset power, and the fifth preset power, which can be defined according to actual conditions, so that The third preset power is greater than the fourth preset power, and the fourth preset power is greater than the fifth preset power, which only needs to meet user requirements.

On the basis of the above embodiments, the air conditioner defrosting control method provided by this embodiment further includes: when the defrosting time is less than or equal to the first preset duration, and the coil temperature is greater than or equal to the third preset temperature, controlling The defrosting operation of the air conditioner is turned off; or, when the defrosting time is greater than or equal to the second preset duration, the defrosting operation of the air conditioner is controlled to be turned off, wherein the second preset duration is greater than the first preset duration; or, when the frosting thickness is less than or equal to In the case of a third preset thickness, the defrosting operation is controlled to be off, wherein the third preset thickness is smaller than the first preset thickness.

In one embodiment, the air conditioner is controlled to perform a defrosting operation on the first outdoor heat exchanger. When the defrosting time is 50S and the coil temperature is 10°C, the defrosting time at this time is less than the first preset duration of 60S. , the coil temperature is greater than the third preset temperature by 5°C, it can be known that the current frost on the first outdoor heat exchanger has been cleared or the remaining frost can be cleared by using the residual heat of the coil, and the defrosting operation of the air conditioner is controlled to be turned off; According to the relationship between the defrosting time and the first preset duration, and the relationship between the current coil temperature and the third preset temperature, the defrosting operation of the air conditioner is controlled in time to shut down, so as to avoid wasting resources when starting for a long time.

In another embodiment, when the defrosting time is 20 minutes, the defrosting time at this time is greater than the second preset time length of 15 minutes, and the frost on the first outdoor heat exchanger can be completely removed within 20 minutes, and the air conditioner is controlled to defrost Frost operation is off; this air-conditioning defrosting control method can more thoroughly remove the frost on the first outdoor heat exchanger.

The second preset duration in this embodiment is not specifically limited, and it only needs to completely remove the frost on the first outdoor heat exchanger.

In yet another embodiment, when it is detected that the frosting thickness of the first outdoor heat exchanger is 0.5 mm, the frosting thickness at this time is less than 1 mm and less than the first preset thickness of 1.5 mm, at this time the first outdoor heat exchanger The frosting thickness of the device has been basically cleared, and the current frosting thickness does not affect the continued use, and the defrosting operation is controlled to be closed to avoid wasting resources.

The third preset thickness in this embodiment is not specifically limited, and the third preset thickness is smaller than the first preset thickness, as long as it meets the user's defrosting requirements.

On the basis of the above embodiments, when the defrosting time is less than or equal to the first preset duration, and the coil temperature is greater than or equal to the third preset temperature, controlling the defrosting operation of the air conditioner to turn off further includes: when the defrosting time is less than equal to the third preset time length, and when the coil temperature is greater than the fourth preset temperature, control the defrosting operation of the air conditioner to turn off, wherein the third preset time length is less than the first preset time length, and the fourth preset temperature is greater than the third preset temperature temperature.

When there is a lot of frost on the first outdoor heat exchanger, the defrosting time is less than or equal to the first preset duration of 60S, and the coil temperature is greater than the third preset temperature of 5°C, the air conditioner is controlled to turn off the defrosting operation , it may not be possible to completely remove the frost on the first outdoor heat exchanger. At this time, there is residual frost on the first outdoor heat exchanger, and the defrosting operation needs to be continued; specifically, when the defrosting time is When the temperature is 18°C, the defrosting time is less than or equal to the first preset time length of 60S, and the coil temperature is greater than or equal to the fourth preset temperature of 15°C, and the defrosting operation of the air conditioner is controlled to be closed; this method can effectively control the air conditioner’s first Remove the frost on the outdoor heat exchanger to avoid incomplete removal from affecting the continued use of the first outdoor heat exchanger.

In this embodiment, by detecting the relationship between the coil temperature and the third preset temperature and the fourth preset temperature during different defrosting times, the defrosting operation of the air conditioner is controlled to be closed, which can avoid excessive frosting and defrosting Not thorough.

In this embodiment, there is no specific limitation on the third preset time length and the fourth preset temperature, which can be defined according to user needs, so that the third preset time length is less than the first preset time length, and the fourth preset temperature is greater than the third preset time length. Just preset the temperature.

The air-conditioning control device provided by the present application is described below, and the air-conditioning control device described below and the air-conditioning defrosting control method described above can be referred to in correspondence.

This embodiment also provides an air-conditioning control device. The air-conditioning control device for operation includes: an acquisition module: used to obtain the current frosting thickness of the first outdoor heat exchanger; When the thickness is set, the air conditioner is controlled to defrost the first outdoor heat exchanger, and the second outdoor heat exchanger is controlled to start.

Referring to Fig. 2, the present embodiment also provides an air conditioner, including the above-mentioned air conditioning control device, and also includes an indoor heat exchanger 1, a compressor 4, a first outdoor heat exchanger 2, a second outdoor heat exchanger 3 and a heating The device 5, the indoor heat exchanger 1, the compressor 4, and the first outdoor heat exchanger 2 form a circulating flow path, and the first outdoor heat exchanger 2 and the second outdoor heat exchanger 3 are respectively connected to the heating device 5. When the first When the outdoor heat exchanger 2 is frosted and needs to be defrosted, the control indoor heat exchanger 1 is disconnected from the first outdoor heat exchanger 2, and the indoor heat exchanger 1 is connected to the second outdoor heat exchanger 3 to heat The device 5 heats and defrosts the first outdoor heat exchanger 2; in the case of frosting on the second outdoor heat exchanger 3, the indoor heat exchanger 1 is connected to the first outdoor heat exchanger 2, and the heating device 5 pairs The second outdoor heat exchanger 3 performs heating and defrosting.

Further, the air conditioner provided in this embodiment also includes a temperature monitoring device and a thickness monitoring device, wherein the temperature monitoring device is used to detect the temperature of the upper coil of the first outdoor heat exchanger 2 and the temperature of the upper coil of the second outdoor heat exchanger 3 According to the coil temperature, the heating device is controlled to heat and defrost the first outdoor heat exchanger or the second outdoor heat exchanger with different heating power. The thickness monitoring device is used to detect the frosting thickness on the first outdoor heat exchanger 2 or the second outdoor heat exchanger 3, and control the air conditioner to exchange heat with the first outdoor heat exchanger when the frosting thickness is greater than or equal to the first preset thickness. The second outdoor heat exchanger 3 or the second outdoor heat exchanger 3 performs a defrosting operation, controls the second outdoor heat exchanger 3 or the first outdoor heat exchanger 2 to start, and continues to supply heat to the indoor environment.

FIG. 3 illustrates a schematic diagram of the physical structure of an electronic device. As shown in FIG. 3 , the electronic device may include: a processor (processor) 310, a communication interface (Communications Interface) 320, a memory (memory) 330 and a communication bus 340, Wherein, the processor 310 , the communication interface 320 , and the memory 330 communicate with each other through the communication bus 340 . The processor 310 can call the logic instructions in the memory 330 to execute the air-conditioning defrosting control method, the method includes: acquiring the current frosting thickness of the first outdoor heat exchanger; when the frosting thickness is greater than or equal to the first preset thickness, Next, the air conditioner is controlled to defrost the first outdoor heat exchanger, and the second outdoor heat exchanger is controlled to start.

In addition, the above-mentioned logic instructions in the memory 330 may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc., which can store program codes. .

On the other hand, the present application also provides a computer program product, the computer program product includes a computer program stored on a non-transitory computer-readable storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer When executing, the computer can execute the air-conditioning defrosting control method provided by the above methods, the method includes: obtaining the current frosting thickness of the first outdoor heat exchanger; when the frosting thickness is greater than or equal to the first preset thickness, The air conditioner is controlled to perform a defrosting operation on the first outdoor heat exchanger, and the second outdoor heat exchanger is controlled to start.

In yet another aspect, the present application also provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it is implemented to perform the air-conditioning defrosting control methods provided above, the method includes : Obtain the current frosting thickness of the first outdoor heat exchanger; if the frosting thickness is greater than or equal to the first preset thickness, control the air conditioner to perform defrosting operation on the first outdoor heat exchanger and control the second outdoor heat exchanger start up.

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative effort.

Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic discs, optical discs, etc., including several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) execute the methods described in various embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

The above embodiments are only used to illustrate the present application, but not to limit the present application. Although the present application has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present application do not depart from the spirit and scope of the technical solutions of the present application, and all should cover within the scope of the claims of this application.

Claims

A defrosting control method for an air conditioner, comprising:

Obtain the current frosting thickness of the first outdoor heat exchanger;

When the frosting thickness is greater than or equal to the first preset thickness, the air conditioner is controlled to perform a defrosting operation on the first outdoor heat exchanger, and the second outdoor heat exchanger is controlled to start.
The air conditioner defrosting control method according to claim 1, further comprising: controlling the air conditioner to operate in an initial state when the frosting thickness is less than the first preset thickness.
The air conditioner defrosting control method according to claim 1, wherein when the frosting thickness is greater than or equal to the first preset thickness, the air conditioner is controlled to perform a defrosting operation on the first outdoor heat exchanger, and the second outdoor heat exchanger is controlled to Heat exchanger startup further includes:

Obtain the frosting thickness of multiple preset positions on the current first outdoor heat exchanger;

determining an average value of the frosting thickness based on the number of the preset locations and the frosting thicknesses at a plurality of the preset locations;

When the average value is greater than or equal to the first preset thickness, the air conditioner is controlled to perform a defrosting operation on the first outdoor heat exchanger, and the second outdoor heat exchanger is controlled to start.
The air conditioner defrosting control method according to claim 3, wherein controlling the air conditioner to perform a defrosting operation on the first outdoor heat exchanger comprises: controlling a heating device to heat the first outdoor heat exchanger.
The air conditioner defrosting control method according to claim 4, wherein controlling the heating device to heat the first outdoor heat exchanger comprises:

When the frosting thickness is greater than or equal to the first preset thickness and less than a second preset thickness, controlling the heating device to heat the first outdoor heat exchanger with a first preset power;

When the frosting thickness is greater than or equal to the second preset thickness, controlling the heating device to heat the first outdoor heat exchanger with a second preset power;

Wherein the first preset power is smaller than the second preset power.
The air-conditioning defrosting control method according to claim 4 or 5, wherein controlling the heating device to heat the first outdoor heat exchanger further comprises:

Obtain the current coil temperature of the first outdoor heat exchanger;

When the coil temperature is lower than the first preset temperature, the heating device is controlled to heat the first outdoor heat exchanger with a third preset power;

When the coil temperature is greater than or equal to the first preset temperature and lower than the second preset temperature, the heating device is controlled to heat the first outdoor heat exchanger with a fourth preset power;

When the coil temperature is greater than or equal to the second preset temperature and lower than the frost point temperature, control the heating device to heat the first outdoor heat exchanger with a fifth preset power;

Wherein, the third preset power is greater than the fourth preset power, and the fourth preset power is greater than the fifth preset power.
The air-conditioning defrosting control method according to claim 6, further comprising:

When the defrosting time is less than or equal to the first preset duration, and the coil temperature is greater than or equal to the third preset temperature, the defrosting operation of the air conditioner is controlled to be turned off;

Or, when the defrosting time is greater than or equal to a second preset duration, the defrosting operation of the air conditioner is controlled to be turned off, wherein the second preset duration is longer than the first preset duration;

Or, when the frosting thickness is less than or equal to a third preset thickness, the defrosting operation is controlled to be turned off, wherein the third preset thickness is smaller than the first preset thickness.
The air conditioner defrosting control method according to claim 7, wherein, in the case that the defrosting time is less than or equal to the first preset time length, and the coil temperature is greater than or equal to the third preset temperature, the defrosting operation of the air conditioner is controlled Closure further includes:

When the defrosting time is less than or equal to a third preset duration and the coil temperature is greater than a fourth preset temperature, control the defrosting operation of the air conditioner to turn off, wherein the third preset duration is shorter than the first preset duration For a set time, the fourth preset temperature is greater than the third preset temperature.
An air conditioner control device, comprising:

Obtaining module: used to obtain the frosting thickness of the current first outdoor heat exchanger;

Control module: used to control the air conditioner to perform a defrosting operation on the first outdoor heat exchanger and control the start of the second outdoor heat exchanger when the frosting thickness is greater than or equal to the first preset thickness.
An air conditioner, comprising the air conditioner control device according to claim 9.