CN112393391B - Heat storage control method for air conditioner - Google Patents

Abstract

The invention belongs to the technical field of air conditioners, and particularly provides a heat storage control method of an air conditioner. The invention aims to solve the problems of energy waste and poor user experience caused by the fact that the temperature of an indoor heat exchanger cannot be controlled stably by the existing heat storage control method of the air conditioner. For this purpose, the heat storage control method of the air conditioner of the present invention comprises: controlling the air conditioner to be started in any heat storage operation mode; detecting the coil temperature of an indoor heat exchanger of the air conditioner; judging the numerical value and the variation trend of the temperature of the coil; and selectively controlling a heat storage operation mode of the air conditioner based on the judgment result. Through the steps, the invention can match different heat storage operation modes according to different coil pipe temperatures and different coil pipe temperature change trends, and perform more reasonable parameter setting, thereby being capable of controlling the coil pipe temperature more accurately, leading the coil pipe temperature to be more stable, reducing energy waste and avoiding the unstable condition of blowing temperature.

Description

Heat storage control method for air conditioner

Technical Field

The invention belongs to the technical field of air conditioners, and specifically provides a heat storage control method for an air conditioner.

Background technique

In winter, due to the low indoor temperature, when the air conditioner is just turned on for heating, the coil temperature of the indoor heat exchanger is low. At this time, the wind blown out is similar to the indoor temperature, causing the air conditioner to blow cold air.

In the prior art, the above problem is solved by storing heat in the indoor heat exchanger of the air conditioner in advance. When the air conditioner is officially turned on, the indoor heat exchanger has reached a preset temperature, thereby avoiding the situation of blowing cold air. However, the control method of pre-heat storage is usually achieved by controlling the compressor to start and stop repeatedly, which makes the control of the coil temperature inaccurate, and often causes excessive temperature jumps. When the temperature is high, the heat dissipation is faster, resulting in energy waste. When the temperature is low, turning on the air conditioner cannot realize the function of pre-heat storage, the temperature of the blowing air is unstable, and the user experience is poor.

Accordingly, the art needs a new air conditioner heat storage control method to solve the problem that the existing air conditioner heat storage control method cannot stably control the temperature of the indoor heat exchanger, resulting in energy waste and poor user experience.

Summary of the invention

In order to solve the above problems in the prior art, that is, to solve the problem that the existing air conditioner heat storage control method cannot stably control the temperature of the indoor heat exchanger, resulting in energy waste and poor user experience, the present invention provides an air conditioner heat storage control method, characterized in that the control method includes:

Controlling the air conditioner to start in any heat storage operation mode;

detecting the coil temperature of the indoor heat exchanger of the air conditioner;

Determine the value and change trend of the coil temperature;

Based on the determination result, the heat storage operation mode of the air conditioner is selectively controlled.

In the preferred technical solution of the above-mentioned air conditioner heat storage control method, the step of "determining the numerical value and change trend of the coil temperature" further includes:

Determine whether the change trend of the coil temperature is in an increasing stage or a decreasing stage;

Based on the judgment result, the numerical value of the coil temperature is judged.

In the preferred technical solution of the above-mentioned air conditioner heat storage control method, the step of "selectively controlling the heat storage operation mode of the air conditioner based on the judgment result" further includes:

When the change trend of the coil temperature is in an increasing stage and the coil temperature is less than a first preset temperature, the air conditioner is controlled to operate in a first heat storage operation mode.

In the preferred technical solution of the above-mentioned air conditioner heat storage control method, the step of "selectively controlling the heat storage operation mode of the air conditioner based on the judgment result" further includes:

When the change trend of the coil temperature is in an upward stage and the coil temperature is greater than or equal to a first preset temperature, the air conditioner is controlled to operate in a second heat storage operation mode.

In the preferred technical solution of the above-mentioned air conditioner heat storage control method, the step of "selectively controlling the heat storage operation mode of the air conditioner based on the judgment result" further includes:

When the change trend of the coil temperature is in a decreasing stage and the coil temperature is greater than or equal to a second preset temperature, the air conditioner is controlled to operate in a third heat storage operation mode.

In the preferred technical solution of the above-mentioned air conditioner heat storage control method, the step of "selectively controlling the heat storage operation mode of the air conditioner based on the judgment result" further includes:

When the change trend of the coil temperature is in a decreasing stage and the coil temperature is lower than a second preset temperature, the air conditioner is controlled to operate in a fourth heat storage operation mode.

In the preferred technical solution of the above-mentioned air conditioner heat storage control method, the step of "controlling the air conditioner to start in any heat storage operation mode" further includes:

Detecting whether the air conditioner is allowed to start the heat storage control, and when the heat storage control is allowed to start, controlling the air conditioner to start in any heat storage operation mode;

and/or, detecting whether the outdoor ambient temperature is lower than a third preset temperature and whether the indoor ambient temperature is lower than a fourth preset temperature, and when the outdoor ambient temperature is lower than the third preset temperature and the indoor ambient temperature is lower than the fourth preset temperature, controlling the air conditioner to start in any heat storage operation mode;

And/or, detect whether the sensor fails, and when the sensor does not fail, control the air conditioner to start in any heat storage operation mode.

In the preferred technical solution of the above-mentioned air conditioner heat storage control method, the step of "controlling the air conditioner to start in any heat storage operation mode" further includes:

receiving a user's instruction to start heat storage, and controlling the air conditioner to start in any heat storage operation mode; and/or

When the preset time for starting the heat storage instruction is reached, the air conditioner is controlled to start in any heat storage operation mode.

In the preferred technical solution of the above-mentioned air conditioner heat storage control method, after the step of "selectively controlling the heat storage operation mode of the air conditioner based on the judgment result", the control method further includes:

When receiving a user power-on instruction, stopping the heat storage operation mode of the air conditioner; and/or,

When the accumulated heat storage operation time exceeds a preset time, the heat storage operation mode of the air conditioner is stopped.

In the preferred technical solution of the above-mentioned air conditioner heat storage control method, the adjustment parameters of the heat storage operation mode of the air conditioner at least include the expansion valve opening, the compressor frequency and the outdoor fan wind speed.

It can be understood by those skilled in the art that, in the technical solution of the present invention, the heat storage control method of the air conditioner includes: controlling the air conditioner to start in any heat storage operation mode; detecting the coil temperature of the indoor heat exchanger of the air conditioner; judging the numerical value and change trend of the coil temperature; and based on the judgment result, selectively controlling the heat storage operation mode of the air conditioner.

Through the above steps, the present invention can match different heat storage operation modes according to different coil temperatures and different coil temperature change trends, and perform more reasonable parameter settings, so as to more accurately control the coil temperature to ensure that the coil temperature is more stable and the temperature jump range is smaller without repeatedly starting and stopping the compressor, thereby reducing energy waste and preventing unstable blowing temperature.

BRIEF DESCRIPTION OF THE DRAWINGS

The air conditioner heat storage control method of the present invention is described below with reference to the accompanying drawings. In the accompanying drawings:

FIG1 is a flow chart showing the main steps of the heat storage control method for an air conditioner of the present invention;

FIG2 is a flowchart showing the detailed steps of an embodiment of the air conditioner heat storage control method of the present invention;

FIG. 3 is a schematic diagram of temperature fluctuations in an embodiment of a heat storage control method for an air conditioner according to the present invention.

Detailed ways

The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific applications. For example, although the specification describes the stopping of the heat storage operation mode of the air conditioner when "receiving the user's power-on command", the present invention can obviously stop the heat storage operation mode in other ways, for example, it can also be judged by the accumulated operation time. When the accumulated operation time exceeds the preset time, the heat storage operation mode of the air conditioner can be stopped.

First, the heat storage control method of the air conditioner of the present invention is described with reference to Fig. 1. Fig. 1 is a flow chart of the main steps of the heat storage control method of the air conditioner of the present invention.

As shown in FIG1 , in order to solve the problem that the existing air conditioner heat storage control method cannot stably control the temperature of the indoor heat exchanger, resulting in energy waste and poor user experience, the air conditioner heat storage control method of the present invention includes:

S100, controlling the air conditioner to start in any heat storage operation mode;

First, the air conditioner is controlled to start the heat storage operation mode, so as to prepare for subsequent adjustments according to actual conditions. The heat storage operation mode can be any mode, for example, it can be the four heat storage operation modes mentioned in this application, or other heat storage operation modes in the prior art, as long as the air conditioner can start the heat storage operation.

S200, detecting the coil temperature of the indoor heat exchanger of the air conditioner;

By obtaining the coil temperature, the basic conditions for selecting the thermal storage operation mode are provided. There are various ways to obtain the coil temperature, such as directly obtaining it through the temperature sensor on the coil, or indirectly obtaining it through the temperature sensor at the air outlet. Of course, in order to improve the accuracy of the acquisition, the real-time pressure of the refrigerant entering and exiting the coil can also be detected, and the coil temperature can be indirectly calculated through the pressure difference value.

S300, determining the value and change trend of the coil temperature;

During the heat storage process, designers hope that the coil temperature is maintained at a stable temperature. However, the actual situation is that the coil temperature will fluctuate, either rising or falling. It is necessary to first determine the value and change trend of the coil temperature, so as to provide a reference for the subsequent selection of the heat storage operation mode. The way to determine the coil temperature is that the temperature sensor sends the coil temperature to the control unit of the air conditioner. The air conditioner determines the specific value and change trend of the coil temperature based on the multiple sets of feedback data. The judgment process is a relatively routine operation and will not be expanded in detail.

S400: Based on the judgment result, selectively control the heat storage operation mode of the air conditioner.

When the specific value and change trend of the coil temperature are known, different programs can be preset according to different situations, so that the temperature can be increased quickly when it is needed, and the temperature can be stopped in time when the temperature is too high, and the coil temperature can be prevented from dropping too low during the process of dropping. This reduces energy waste while reducing the fluctuation range of the coil temperature and improves user experience.

The air conditioner heat storage control method of the present invention is described in detail below with further reference to Figures 1 to 3. Figure 2 is a detailed step flow chart of an embodiment of the air conditioner heat storage control method of the present invention, and Figure 3 is a temperature fluctuation schematic diagram of an embodiment of the air conditioner heat storage control method of the present invention.

As shown in FIG. 1 to FIG. 3 , in a possible implementation manner, the step of S300 may further include:

S310, determining whether the change trend of the coil temperature is in an increasing stage or a decreasing stage;

S320: Based on the judgment result, determine the numerical value of the coil temperature.

Specifically, the set temperatures for changing the heat storage operation mode may be different in the rising and falling stages of the coil temperature, for example, the first set temperature set in the rising stage is higher than the second set temperature set in the falling stage. Compared with the case where the first set temperature is lower than the second set temperature, the air conditioner can increase the coil temperature for a shorter time and maintain the coil temperature for a longer time, further reducing the variation of the coil temperature and reducing the frequent changes of the heat storage operation mode.

In another possible implementation, the step of S400 further includes:

S410: When the change trend of the coil temperature is in an upward stage and the coil temperature is lower than a first preset temperature, the air conditioner is controlled to operate in a first heat storage operation mode.

As shown in Figure 3, this stage is the rising stage, and when the coil temperature is lower than the first preset temperature, it is necessary to raise the heat storage temperature to above the first preset temperature as soon as possible to ensure that the air conditioner does not blow cold air. At this time, the air conditioner is controlled to start the first heat storage operation mode to accelerate the temperature rise. The adjustment parameters of the first heat storage operation mode of the present invention at least include the expansion valve opening, the compressor frequency and the outdoor fan speed. As an example, the adjustment parameters of the first heat storage operation mode of the present invention can be: the compressor frequency is a conventional heat storage frequency (for example, 32Hz), the expansion valve opening is a conventional heat storage opening (for example, 130B, B represents the number of steps, and the expansion valve usually has 480B), and the outdoor fan speed is a conventional heat storage speed (for example, 300rpm). It should be pointed out that the above-mentioned conventional heat storage frequency of the compressor, the conventional heat storage opening of the expansion valve and the conventional heat storage speed of the outdoor fan are not fixed, and can be adjusted according to factors such as the air conditioner model. In addition, for each parameter in the expansion valve opening, the compressor frequency and the outdoor fan speed, its larger value, conventional value and smaller value can also be adjusted according to the specific application scenario. The principle of the present invention is to utilize the differences of the same parameter in different modes, and its protection scope should not be limited to the numerical value of each parameter.

S420: When the change trend of the coil temperature is in an upward stage and the coil temperature is greater than or equal to a first preset temperature, control the air conditioner to operate in a second heat storage operation mode.

As shown in FIG3 , this stage is still a rising stage, but the coil temperature is already higher than the first preset temperature. At this time, cold air will not be blown. It is only necessary to maintain the coil temperature in a reasonable range. At this time, the air conditioner is controlled to start the second heat storage operation mode to reduce the heating rate until it can no longer continue to heat up. Similar to the first heat storage operation mode, the adjustment parameters of the second heat storage operation mode of the present invention at least include the expansion valve opening, the compressor frequency and the outdoor fan speed. As an example, the adjustment parameters of the second heat storage operation mode of the present invention can be: the compressor frequency is a smaller heat storage frequency (for example, 20Hz), the expansion valve opening is a larger heat storage opening (for example, 480B, full opening), and the outdoor fan speed is a larger heat storage speed (for example, 600rpm). It should be pointed out that the above-mentioned smaller heat storage frequency of the compressor, the larger heat storage opening of the expansion valve and the larger heat storage speed of the outdoor fan are not fixed, and can be adjusted according to factors such as the air conditioner model. In addition, for each parameter of the expansion valve opening, the compressor frequency and the outdoor fan speed, its larger value, conventional value and smaller value can also be adjusted according to the specific application scenario. The principle of the present invention is to utilize the differences of the same parameter in different modes, and its protection scope should not be limited to the numerical value of each parameter.

S430: When the change trend of the coil temperature is in a downward stage and the coil temperature is greater than or equal to a second preset temperature, control the air conditioner to operate in a third heat storage operation mode.

As shown in FIG3 , the temperature does not continue to rise in this stage, and the change trend enters a downward stage. However, since the temperature is taken as the starting point at this time, as long as it is not lower than the second set temperature, there will be no risk of blowing cold air. At this time, the air conditioner is controlled to start the third heat storage operation mode, as long as the coil temperature is maintained as much as possible to slow down its decline. Similar to the first and second heat storage operation modes, the adjustment parameters of the third heat storage operation mode of the present invention at least include the expansion valve opening, the compressor frequency and the outdoor fan speed. As an example, the adjustment parameters of the third heat storage operation mode of the present invention can be: the compressor frequency is a smaller heat storage frequency (for example, 22Hz), the expansion valve opening is a larger heat storage opening (for example, 470B), and the outdoor fan speed is a larger heat storage speed (for example, 580rpm). It should be pointed out that the above-mentioned smaller heat storage frequency of the compressor, the larger heat storage opening of the expansion valve and the larger heat storage speed of the outdoor fan are not fixed, and can be adjusted according to factors such as the air conditioner model. In addition, for each parameter of the expansion valve opening, the compressor frequency and the outdoor fan speed, its larger value, conventional value and smaller value can also be adjusted according to the specific application scenario. The principle of the present invention is to utilize the differences of the same parameter in different modes, and its protection scope should not be limited to the numerical value of each parameter.

S440: When the change trend of the coil temperature is in a downward stage and the coil temperature is lower than the second preset temperature, the air conditioner is controlled to operate in a fourth heat storage operation mode.

As shown in FIG3 , this stage is still in the descending stage. The third heat storage mode can no longer maintain the coil temperature above the second preset temperature. If the temperature continues to drop, it may cause cold air to blow. At this time, the air conditioner is controlled to start the fourth heat storage operation mode. Compared with the third heat storage operation mode, the coil generates more heat to prevent it from continuing to cool down, so that the coil temperature re-enters the heating stage. Similar to the first, second and third heat storage operation modes, the adjustment parameters of the fourth heat storage operation mode of the present invention at least include the expansion valve opening, the compressor frequency and the outdoor fan speed. As an example, the adjustment parameters of the fourth heat storage operation mode of the present invention can be: the compressor frequency is a conventional heat storage frequency (for example, 30Hz), the expansion valve opening is a conventional heat storage opening (for example, 133B), and the outdoor fan speed is a conventional heat storage speed (for example, 310rpm). It should be pointed out that the above-mentioned conventional heat storage frequency of the compressor, the conventional heat storage opening of the expansion valve and the conventional heat storage speed of the outdoor fan are not fixed, and can be adjusted according to factors such as the air conditioner model. In addition, for each parameter of the expansion valve opening, the compressor frequency and the outdoor fan speed, the maximum value, the normal value and the minimum value can also be adjusted according to the specific application scenario. The principle of the present invention is to utilize the difference of the same parameter in different modes, and its protection range should not be limited to the numerical value of each parameter.

In addition, the first heat storage operation mode and the fourth heat storage operation mode both require rapid temperature rise, and the second heat storage operation mode and the third heat storage operation mode both require temperature maintenance. Therefore, in order to reduce the frequent changes in the compressor frequency, the expansion valve opening and the outdoor fan speed, of course, the parameters of the first heat storage operation mode and the fourth heat storage operation mode can also be set to be the same, and/or the second heat storage operation mode and the third heat storage operation mode can also be the same.

Through the division of the above four stages, the air conditioner can more accurately select the heat storage operation mode according to the actual temperature and change trend of the coil temperature, thereby reducing energy waste and lowering the fluctuation range of the coil temperature.

As shown in FIG. 1 and FIG. 2 , in another possible implementation manner, step S100 may further include:

S110, detecting whether the air conditioner is allowed to start the heat storage control, and when the heat storage control is allowed to start, controlling the air conditioner to start in any heat storage operation mode.

Adding an authority determination step for the air conditioner can enable users to determine whether to turn on the heat storage mode based on actual needs. Because the heat storage mode consumes electricity, some customers do not care about waiting for the preheating time after turning on the air conditioner in order to save some electricity. Therefore, the authority determination step is added to give users more autonomy in choosing.

In another possible implementation, step S100 may further include:

S120, detecting whether the outdoor ambient temperature is lower than a third preset temperature, and whether the indoor ambient temperature is lower than a fourth preset temperature; when the outdoor ambient temperature is lower than the third preset temperature, and the indoor ambient temperature is lower than the fourth preset temperature, controlling the air conditioner to start in any heat storage operation mode.

Adding the determination of outdoor ambient temperature and indoor ambient temperature makes the air conditioner more intelligent. Specifically, the heat storage operation mode is turned on only when both the outdoor ambient temperature and the indoor ambient temperature are lower than a set value, avoiding the situation where the heat storage mode is turned on randomly when there is no cold wind. The third heat storage temperature can be 25°C, and of course it can also be other values, such as 24°C, etc. Correspondingly, the fourth heat storage temperature can be 17°C, and of course it can also be other values, such as 16°C, etc.

In another possible implementation, step S100 may further include:

S130, detecting whether the sensor is faulty, and when the sensor is not faulty, controlling the air conditioner to start in any heat storage operation mode.

First, check whether the hardware is faulty to avoid frequently starting or continuously starting the thermal storage operation mode due to hardware failure.

In another possible implementation, step S100 may further include:

S140: Receive a heat storage start instruction from the user, and control the air conditioner to start in any heat storage operation mode.

Similar to the determination of adding rights to the air conditioner, the heat storage of the air conditioner can be achieved by the user actively turning on the heat storage instruction, which can give the user more choices.

In another possible implementation, step S100 may further include:

S150: When the preset time for starting the heat storage instruction is reached, the air conditioner is controlled to start in any heat storage operation mode.

Users can also directly set the preset time to start the heat storage instruction according to actual needs. When the start time is reached, the air conditioner is controlled to start the heat storage operation mode, so that users have more independent control functions and are more user-friendly.

As shown in FIG. 1 and FIG. 2 , in another possible implementation manner, after step S400, the control method may further include:

S500: When receiving a power-on instruction from the user, stop the heat storage operation mode of the air conditioner.

Alternatively, after step S400, the control method may further include:

When the accumulated heat storage operation time exceeds a preset time, the heat storage operation mode of the air conditioner is stopped.

Step S500 is added to enable the user to manually suspend the heat storage operation mode to avoid the situation where the user cannot stop the air conditioner from being misoperated, resulting in energy waste. When the heat storage operation mode is always running and the user has not turned on the air conditioner, it may be that the user arrives very late. At this time, if the heat storage operation mode is always turned on, it will also cause energy waste. Therefore, setting a preset time, such as 30 minutes, or of course an hour, can avoid the situation where the user turns on the air conditioner later than the preset time, or the user does not return all night, causing the heat storage operation mode to be turned on all the time, wasting electricity.

In particular, the expansion valve opening, compressor frequency and outdoor fan speed can also be determined according to the ambient temperature on the outdoor unit side, so that more appropriate adjustments can be made according to the outdoor environment, making the coil temperature control more accurate. For example, for the first heat storage operation mode and the second heat storage operation mode, when the outdoor ambient temperature is less than -5°C, the conventional heat storage frequency can be 32Hz, the conventional heat storage opening can be 130B, the conventional outdoor fan speed can be 300B, the smaller heat storage frequency can be 20Hz, the larger heat storage opening can be 470B, and the larger heat storage speed can be 550rpm; when the outdoor ambient temperature is 8°C ≥ When the ambient temperature is ≥-5°C, the conventional heat storage frequency can be 23Hz, the conventional heat storage opening can be 135B, the conventional external fan speed can be 320B, the smaller heat storage frequency can be 17Hz, the larger heat storage opening can be 475B, and the larger heat storage speed can be 570rpm; when the outdoor ambient temperature is ≥8°C, the conventional heat storage frequency can be 15Hz, the conventional heat storage opening can be 140B, the conventional external fan speed can be 340B, the smaller heat storage frequency can be 13Hz, the larger heat storage opening can be 480B, and the larger heat storage speed can be 600rpm. Depending on the outdoor environment, the selected parameter values can be varied. The principle of the present invention is to protect the parameters under different outdoor environmental conditions, and the protection range should not be limited to the value of each parameter.

In addition, when the heat storage operation mode is changed, the expansion valve opening, the compressor frequency and the outdoor fan speed can be adjusted to the target value at the same time to make the adjustment faster. In addition, the heat storage control intervals can obviously be divided into more than the four types listed in the present invention, and can also be six, eight, etc. By adding more preset values similar to the first preset temperature and the second preset temperature, the rising stage and the falling stage can be divided into more intervals to achieve more precise control.

In summary, the present invention can match different heat storage operation modes according to the different coil temperatures and the different trends of coil temperature changes, and make more reasonable parameter formulation, so as to be able to control the coil temperature more accurately, so as to ensure that the coil temperature is more stable and the range of temperature jump is smaller without repeatedly starting and stopping the compressor, thereby reducing energy waste and preventing the blowing temperature from being unstable. Adding steps S310 and S320 can further reduce the frequent changes in the heat storage operation mode. Using four heat storage operation modes S410-S440, the interval can be subdivided to more accurately control the coil temperature without wasting energy. The design of S110-S150 can enable users to have more control options and avoid energy waste caused by some special situations. Similarly, adding step S500 can solve the energy waste in some special situations.

It should be noted that the above-mentioned implementation mode is only used to illustrate the principle of the present invention and is not intended to limit the scope of protection of the present invention. Without departing from the principle of the present invention, those skilled in the art can adjust the above-mentioned structure so that the present invention can be applied to more specific application scenarios.

For example, in an alternative embodiment, when the first preset temperature is the same as the second preset temperature, it is no longer necessary to use the first preset temperature in the rising stage and the second preset temperature in the falling stage to determine the selection of the heat storage operation mode. At this time, it is no longer necessary to prioritize judging the trend of change and then judge the numerical value. The order of the two can be reversed. These do not deviate from the principles of the present invention and therefore will fall within the scope of protection of the present invention.

For example, in another replaceable embodiment, the adjustment parameters of the heat storage operation mode can of course also be a combination of one or more of the expansion valve opening, the compressor frequency and the outdoor fan speed, or other conventional control parameters can be added for arrangement and combination, etc. These do not deviate from the principles of the present invention and therefore will fall within the scope of protection of the present invention.

Those skilled in the art can understand that the above-mentioned air conditioner also includes some other well-known structures, such as a processor, a controller, a memory, etc., wherein the memory includes but is not limited to a random access memory, a flash memory, a read-only memory, a programmable read-only memory, a volatile memory, a non-volatile memory, a serial memory, a parallel memory or a register, etc., and the processor includes but is not limited to a CPLD/FPGA, a DSP, an ARM processor, a MIPS processor, etc. In order to unnecessarily obscure the embodiments of the present disclosure, these well-known structures are not shown in the drawings.

Although the various steps in the above embodiment are described in the above order, those skilled in the art can understand that in order to achieve the effect of this embodiment, different steps do not have to be executed in such an order, and they can be executed simultaneously (in parallel) or in a reversed order. For example, from S110 to S130, the three judgment conditions are irrelevant to each other. When used at the same time, the judgment conditions of S110, S120 and S130 can of course be reversed or changed in order. Taking S110 and S130 as examples, one of them is to detect whether the air conditioner has the authority to turn on the heat storage operation mode, and the other is to detect whether the sensor of the air conditioner is normal. These two steps do not interfere with each other and can obviously be inverted or executed in parallel, regardless of order. These simple changes are within the scope of protection of the present invention.

So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (5)

1. A heat storage control method of an air conditioner, characterized by comprising:

controlling the air conditioner to be started in any heat storage operation mode;

detecting the coil temperature of an indoor heat exchanger of the air conditioner;

Judging the numerical value and the variation trend of the temperature of the coil;

Selectively controlling a heat storage operation mode of the air conditioner based on the judgment result;

Wherein the step of "determining the magnitude of the value of the coil temperature and the trend of change" further comprises:

Judging whether the change trend of the temperature of the coil is in an ascending stage or a descending stage;

Judging the numerical value of the temperature of the coil pipe based on the judging result;

wherein the step of "selectively controlling the heat storage operation mode of the air conditioner based on the determination result" further includes:

when the change trend of the coil temperature is in an ascending stage and the coil temperature is smaller than a first preset temperature, controlling the air conditioner to operate in a first heat storage operation mode;

when the change trend of the temperature of the coil is in an ascending stage and the temperature of the coil is greater than or equal to a first preset temperature, controlling the air conditioner to operate in a second heat storage operation mode;

When the change trend of the coil temperature is in a descending stage and the coil temperature is more than or equal to a second preset temperature, controlling the air conditioner to operate in a third heat storage operation mode;

When the change trend of the coil temperature is in a descending stage and the coil temperature is smaller than a second preset temperature, controlling the air conditioner to operate in a fourth heat storage operation mode;

The heating speed of the first heat storage operation mode is larger than that of the second heat storage operation mode; the temperature rise speed of the fourth heat storage operation mode is greater than the temperature rise speed of the third heat storage operation mode.

2. The heat storage control method of an air conditioner according to claim 1, wherein the step of "controlling the air conditioner to be turned on in an arbitrary heat storage operation mode" further comprises:

detecting whether the air conditioner is allowed to start heat storage control, and controlling the air conditioner to start in any heat storage operation mode when the air conditioner is allowed to start heat storage control;

And/or detecting whether the outdoor environment temperature is lower than a third preset temperature or not and whether the indoor environment temperature is lower than a fourth preset temperature or not, and when the outdoor environment temperature is lower than the third preset temperature and the indoor environment temperature is lower than the fourth preset temperature, controlling the air conditioner to be started in any heat storage operation mode;

And/or detecting whether the sensor has a fault, and when the sensor has no fault, controlling the air conditioner to be started in any heat storage operation mode.

3. The heat storage control method of an air conditioner according to claim 1, wherein the step of "controlling the air conditioner to be turned on in an arbitrary heat storage operation mode" further comprises:

Receiving a heat storage starting instruction of a user, and controlling the air conditioner to be started in any heat storage operation mode; and/or

And when the preset starting heat storage instruction time is reached, controlling the air conditioner to start in any heat storage operation mode.

4. The heat storage control method of an air conditioner according to claim 1, wherein after the step of selectively controlling a heat storage operation mode of the air conditioner based on the determination result, the control method further comprises:

When a user starting instruction is received, stopping a heat storage operation mode of the air conditioner; and/or

And stopping the heat storage operation mode of the air conditioner when the accumulated heat storage operation time exceeds the preset time.

5. The heat storage control method of an air conditioner according to claim 1, wherein the adjustment parameters of the heat storage operation mode of the air conditioner include at least an expansion valve opening degree, a compressor frequency and an outdoor fan wind speed.