Method and apparatus for controlling air conditioner, air conditioner, storage medium

Abstract

The application discloses an air conditioner, comprising: a refrigerant circulation loop, comprising a compressor, a four-way valve, a first outdoor heat exchanger, an indoor heat exchanger, a first end of the four-way valve being connected with a first end of the compressor, a second end being connected with a first end of the first outdoor heat exchanger, a third end being connected with a first end of the indoor heat exchanger, and a fourth end being connected with a second end of the compressor; a heat exchange defrost branch, comprising a second outdoor heat exchanger and a three-way valve, a first end of the second outdoor heat exchanger being connected with a first end of the three-way valve, a second end being connected with a second end of the indoor heat exchanger, and a second end of the three-way valve being connected with the first end of the first outdoor heat exchanger; a high-pressure gaseous refrigerant branch, comprising a gas pipe electromagnetic valve, a first end of the gas pipe electromagnetic valve being connected with the first end of the compressor, and a second end being connected with a third end of the three-way valve; and / or a high-pressure liquid refrigerant branch, comprising a liquid pipe electromagnetic valve, a first end of the liquid pipe electromagnetic valve being connected with the second end of the indoor heat exchanger, and a second end being connected with the third end of the three-way valve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent household appliances, for example to a method and device for controlling an air conditioner, an air conditioner and a storage medium. BACKGROUND

[0002] At present, with the improvement of people's living standards, people have put forward higher and higher requirements for living environment. In order to maintain a comfortable environment temperature, air conditioners have become an essential device in people's life. However, during the operation of the air conditioner, frost formation phenomenon is prone to occur.

[0003] The related technology discloses a heat exchanger system, an outdoor unit and an air conditioner. The heat exchanger system comprises an outdoor heat exchanger, a defrosting switching assembly and a liquid distribution switching assembly. The outdoor heat exchanger has at least two heat exchange sections. The liquid distribution switching assembly is used to connect the inlets of different heat exchange sections in a heating state. The defrosting switching assembly comprises a three-way valve. Each outlet of the heat exchange section in the heating state is provided with a reversing control member. The first port of the three-way valve is connected to the exhaust side of the compressor. The second port and the third port of the three-way valve are connected by pipelines between different heat exchange sections and corresponding reversing control members.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related technology:

[0005] When the air conditioner system exhaust pipe group is used for defrosting in the related technology, the heating capacity of the air conditioner is affected, the user's heating experience is affected, and the user's comfort is affected.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine key / important components or to delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide a method and device for controlling an air conditioner, an air conditioner and a storage medium, so as to reduce the influence on the heating capacity of the air conditioner when the air conditioner is defrosting, improve the user's heating experience, and improve the user's comfort.

[0009] In some embodiments, the air conditioner comprises: a refrigerant circulation loop comprising: a compressor, a four-way valve, a first outdoor heat exchanger, an indoor heat exchanger, a first end of the four-way valve connected to a first end of the compressor, a second end connected to a first end of the first outdoor heat exchanger, a third end connected to a first end of the indoor heat exchanger, and a fourth end connected to a second end of the compressor; a heat exchange defrosting branch comprising a second outdoor heat exchanger and a three-way valve, a first end of the second outdoor heat exchanger connected to a first end of the three-way valve, a second end connected to a second end of the indoor heat exchanger, and a second end of the three-way valve connected to the first end of the first outdoor heat exchanger; a high-pressure gaseous refrigerant branch comprising a gas pipe solenoid valve, a first end of the gas pipe solenoid valve connected to the first end of the compressor, and a second end connected to a third end of the three-way valve; and / or a high-pressure liquid refrigerant branch comprising a liquid pipe solenoid valve, a first end of the liquid pipe solenoid valve connected to the second end of the indoor heat exchanger, and a second end connected to the third end of the three-way valve.

[0010] Optionally, the air conditioner further comprises: a heat storage branch, the gas pipe solenoid valve and / or the liquid pipe solenoid valve connected to the third end of the three-way valve through the heat storage branch.

[0011] Optionally, the heat storage branch further comprises: a heat storage device; a heat storage main line, the heat storage device arranged on the heat storage main line; and a bypass branch, the bypass branch connected in parallel to the heat storage main line.

[0012] Optionally, the heat storage branch further comprises: a main solenoid valve arranged on the heat storage main line, the main solenoid valve controlling the opening and closing of the heat storage main line; and a bypass solenoid valve arranged on the bypass branch, the bypass solenoid valve controlling the opening and closing of the bypass branch.

[0013] In some embodiments, the method is applied to the air conditioner, comprising: determining the operation mode of the air conditioner; and controlling the opening and closing of the four-way valve, the three-way valve, the gas pipe solenoid valve, the liquid pipe solenoid valve, the main solenoid valve, and the bypass solenoid valve according to the operation mode of the air conditioner, so as to realize the frost-free operation or the defrosting operation of the air conditioner.

[0014] Optionally, determining the operation mode of the air conditioner comprises: determining the operation mode of the air conditioner as a conventional refrigeration mode; or determining the heating mode type of the air conditioner as a heating frost-free mode, a heating reverse cycle defrosting mode, a heating high-pressure gas pipe exhaust heat heat storage device defrosting mode, or a heating high-pressure liquid pipe waste heat heat storage device defrosting mode according to the pipe temperature of the first outdoor heat exchanger.

[0015] Optionally, based on the pipe temperature of the first outdoor heat exchanger, the heating mode type of the air conditioner is determined to be either a frost-free heating mode, a reverse circulation defrosting mode, a high-pressure gas pipe exhaust sensible heat storage device defrosting mode, or a high-pressure liquid pipe waste heat storage device defrosting mode. This includes: determining the air conditioner's heating mode as a reverse circulation defrosting mode when the pipe temperature of the first outdoor heat exchanger is in a first temperature range; determining the air conditioner's heating mode as a high-pressure gas pipe exhaust sensible heat storage device defrosting mode when the pipe temperature of the first outdoor heat exchanger is in a second temperature range; determining the air conditioner's heating mode as a high-pressure liquid pipe waste heat storage device defrosting mode when the pipe temperature of the first outdoor heat exchanger is in a third temperature range; and determining the air conditioner's heating mode as a frost-free heating mode when the pipe temperature of the first outdoor heat exchanger is in a fourth temperature range. Wherein, the first temperature range is smaller than the second temperature range, the second temperature range is smaller than the third temperature range, and the third temperature range is smaller than the fourth temperature range.

[0016] Optionally, depending on the operating mode of the air conditioner, the on / off state of the four-way valve, three-way valve, gas pipe solenoid valve, liquid pipe solenoid valve, main solenoid valve, and bypass solenoid valve is controlled, including: when the air conditioner is in the normal cooling mode, controlling the first and second ends of the four-way valve to be connected, the third and fourth ends to be connected, the first and second ends of the three-way valve to be connected, and the gas pipe solenoid valve, liquid pipe solenoid valve, main solenoid valve, and bypass solenoid valve to be closed, so that the refrigerant in the refrigerant circulation loop flows sequentially through the compressor, four-way valve, first outdoor heat exchanger, indoor heat exchanger, and four-way valve before flowing back to the compressor, and the refrigerant in the heat exchange defrost branch flows sequentially through the compressor, four-way valve, three-way valve, second outdoor heat exchanger, indoor heat exchanger, and four-way valve before flowing back to the compressor.

[0017] Optionally, depending on the operating mode of the air conditioner, the on / off state of the four-way valve, three-way valve, gas pipe solenoid valve, liquid pipe solenoid valve, main solenoid valve, and bypass solenoid valve is controlled, including: when the air conditioner is in heating frost-free mode, controlling the first and third ends of the four-way valve to be connected, the second and fourth ends to be connected, the first and second ends of the three-way valve to be connected, and the gas pipe solenoid valve, liquid pipe solenoid valve, main solenoid valve, and bypass solenoid valve to be closed, so that the refrigerant in the refrigerant circulation loop flows sequentially through the compressor, four-way valve, indoor heat exchanger, first outdoor heat exchanger, and four-way valve before flowing back to the compressor, and the refrigerant in the heat exchange defrosting branch flows sequentially through the compressor, four-way valve, indoor heat exchanger, second outdoor heat exchanger, three-way valve, and four-way valve before flowing back to the compressor.

[0018] Optionally, depending on the operating mode of the air conditioner, the on / off state of the four-way valve, three-way valve, gas pipe solenoid valve, liquid pipe solenoid valve, main solenoid valve, and bypass solenoid valve is controlled, including: when the air conditioner is in heating high-pressure gas pipe exhaust sensible heat storage device defrosting mode, the gas pipe solenoid valve is controlled to open, the liquid pipe solenoid valve is controlled to close, the first and third ends of the three-way valve are connected, the first and third ends of the four-way valve are connected, and the second and fourth ends are connected, so that the refrigerant in the refrigerant circulation loop flows sequentially through the compressor, the four-way valve, the indoor heat exchanger, the first outdoor heat exchanger, and the four-way valve before flowing back to the compressor; the on / off state of the main solenoid valve and the bypass solenoid valve is controlled to be one open and one closed according to the temperature T1 of the heat storage device and the temperature T2 of the gas pipe solenoid valve, so that the refrigerant in the high-pressure gaseous refrigerant branch and the heat exchange defrosting branch flows sequentially through the compressor, the gas pipe solenoid valve, the main solenoid valve or the bypass solenoid valve, the three-way valve, the second outdoor heat exchanger, the first outdoor heat exchanger, and the four-way valve before flowing back to the compressor.

[0019] Optionally, the on / off state of the main solenoid valve and the bypass solenoid valve is controlled according to the temperature T1 of the heat storage device and the temperature T2 of the gas pipe solenoid valve, which is one open and one closed. This includes: when T1≥T2, controlling the main solenoid valve to open and the bypass solenoid valve to close, so that the refrigerant in the high-pressure gaseous refrigerant branch and the heat exchange defrost branch flows sequentially through the compressor, the gas pipe solenoid valve, the main solenoid valve, the three-way valve, the second outdoor heat exchanger, the first outdoor heat exchanger, and the four-way valve before flowing back to the compressor; when T1<T2, controlling the main solenoid valve to close and the bypass solenoid valve to open, so that the refrigerant in the high-pressure gaseous refrigerant branch and the heat exchange defrost branch flows sequentially through the compressor, the gas pipe solenoid valve, the bypass solenoid valve, the three-way valve, the second outdoor heat exchanger, the first outdoor heat exchanger, and the four-way valve before flowing back to the compressor.

[0020] Optionally, depending on the operating mode of the air conditioner, the on / off state of the four-way valve, three-way valve, gas pipe solenoid valve, liquid pipe solenoid valve, main solenoid valve, and bypass solenoid valve is controlled, including: when the air conditioner is in the heating high-pressure liquid pipe waste heat storage device defrosting mode, the first and third ends of the four-way valve are connected, the second and fourth ends are connected, the first and third ends of the three-way valve are connected, the liquid pipe solenoid valve is opened, and the gas pipe solenoid valve is closed, so that the refrigerant in the refrigerant circulation loop flows sequentially through the compressor, the four-way valve, the indoor heat exchanger, the first outdoor heat exchanger, and the four-way valve before flowing back to the compressor; the on / off state of the main solenoid valve and the bypass solenoid valve is controlled to be one open and one closed according to the temperature T1 of the heat storage device and the temperature T3 of the liquid pipe solenoid valve, so that the refrigerant in the high-pressure liquid refrigerant branch and the heat exchange defrosting branch flows sequentially through the compressor, the four-way valve, the indoor heat exchanger, the liquid pipe solenoid valve, the main solenoid valve or the bypass solenoid valve, the three-way valve, the second outdoor heat exchanger, the first outdoor heat exchanger, and the four-way valve before flowing back to the compressor.

[0021] Optionally, the on / off state of the main solenoid valve and the bypass solenoid valve is controlled according to the temperature T1 of the heat storage device and the temperature T3 of the liquid pipe solenoid valve, which includes: when T1≤T3, the main solenoid valve is controlled to open and the bypass solenoid valve is controlled to close, so that the refrigerant in the high-pressure liquid refrigerant branch and the heat exchange defrost branch flows sequentially through the compressor, four-way valve, indoor heat exchanger, liquid pipe solenoid valve, main solenoid valve, three-way valve, second outdoor heat exchanger, first outdoor heat exchanger, and four-way valve before flowing back to the compressor; when T1>T3, the main solenoid valve is controlled to close and the bypass solenoid valve is controlled to open, so that the refrigerant in the high-pressure liquid refrigerant branch and the heat exchange defrost branch flows sequentially through the compressor, four-way valve, indoor heat exchanger, liquid pipe solenoid valve, bypass solenoid valve, three-way valve, second outdoor heat exchanger, first outdoor heat exchanger, and four-way valve before flowing back to the compressor.

[0022] Optionally, depending on the operating mode of the air conditioner, the on / off state of the four-way valve, three-way valve, gas pipe solenoid valve, liquid pipe solenoid valve, main solenoid valve, and bypass solenoid valve is controlled, including: when the air conditioner is in heating reverse circulation defrosting mode, controlling the first and second ends of the four-way valve to be connected, the third and fourth ends to be connected, the first and second ends of the three-way valve to be connected, and the gas pipe solenoid valve, liquid pipe solenoid valve, main solenoid valve, and bypass solenoid valve to be closed, so that the refrigerant in the refrigerant circulation loop flows sequentially through the compressor, four-way valve, first outdoor heat exchanger, indoor heat exchanger, and four-way valve before flowing back to the compressor, and the refrigerant in the heat exchange defrosting branch flows sequentially through the compressor, four-way valve, three-way valve, second outdoor heat exchanger, indoor heat exchanger, and four-way valve before flowing back to the compressor.

[0023] In some embodiments, the device, applied to the air conditioner, includes: a determining module configured to determine the operating mode of the air conditioner; and a control module configured to control the on / off state of a four-way valve, a three-way valve, a gas pipe solenoid valve, a liquid pipe solenoid valve, a main solenoid valve, and a bypass solenoid valve according to the operating mode of the air conditioner, so as to enable the air conditioner to operate without frost or defrost.

[0024] In some embodiments, the air conditioner includes: an air conditioner body, including: a refrigerant circulation loop, including: a compressor, a four-way valve, a first outdoor heat exchanger, and an indoor heat exchanger, wherein a first end of the four-way valve is connected to a first end of the compressor, a second end is connected to a first end of the first outdoor heat exchanger, a third end is connected to a first end of the indoor heat exchanger, and a fourth end is connected to a second end of the compressor; a heat exchange defrosting branch, including a second outdoor heat exchanger and a three-way valve, wherein a first end of the second outdoor heat exchanger is connected to a first end of the three-way valve, a second end is connected to a second end of the indoor heat exchanger, and a second end of the three-way valve is connected to a first end of the first outdoor heat exchanger; a high-pressure gaseous refrigerant branch, including a gas pipe solenoid valve, wherein a first end of the gas pipe solenoid valve is connected to a first end of the compressor, and a second end is connected to a third end of the three-way valve; and / or, a high-pressure liquid refrigerant branch, including a liquid pipe solenoid valve, wherein a first end of the liquid pipe solenoid valve is connected to a second end of the indoor heat exchanger, and a second end is connected to a third end of the three-way valve; the device for controlling the air conditioner is installed on the air conditioner body.

[0025] In some embodiments, the storage medium stores program instructions that, when executed, perform the method for controlling an air conditioner.

[0026] The method, apparatus, air conditioner, and storage medium for controlling an air conditioner provided in this disclosure can achieve the following technical effects:

[0027] By setting up a heat exchange defrosting branch that includes a second outdoor heat exchanger and a three-way valve, during the initial heating stage, both the first and second outdoor heat exchangers absorb heat. Once the set conditions are met, a portion of the high-temperature refrigerant is allowed to enter the heat exchange defrosting branch through a high-pressure gaseous refrigerant branch or a high-pressure liquid refrigerant branch, thus defrosting the second outdoor heat exchanger. The heat from the second outdoor heat exchanger then heats the inlet air temperature of the first outdoor heat exchanger. The refrigerant from the high-pressure gaseous or liquid refrigerant branch entering the heat exchange defrosting branch increases the air conditioner's heating capacity and achieves better defrosting. Therefore, during defrosting, the impact on the air conditioner's heating capacity is reduced, improving the user's heating experience and comfort.

[0028] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0029] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0030] Figure 1This is a schematic diagram of the structure of an air conditioner provided in an embodiment of this disclosure;

[0031] Figure 2 This is a schematic diagram of the refrigerant flow direction of an air conditioner in conventional cooling mode, provided in an embodiment of this disclosure;

[0032] Figure 3 This is a schematic diagram of the refrigerant flow direction of an air conditioner in heating frost-free mode according to an embodiment of this disclosure;

[0033] Figure 4 This is a schematic diagram of the refrigerant flow direction in the defrosting mode of the high-pressure gas pipe exhaust sensible heat storage device of an air conditioner provided in this embodiment of the disclosure;

[0034] Figure 5 This is a schematic diagram of a method for controlling an air conditioner provided in an embodiment of this disclosure;

[0035] Figure 6 This is a schematic diagram of another method for controlling an air conditioner provided in an embodiment of this disclosure;

[0036] Figure 7 This is a schematic diagram of a device for controlling an air conditioner provided in an embodiment of this disclosure;

[0037] Figure 8 This is a schematic diagram of another device for controlling an air conditioner provided in an embodiment of this disclosure;

[0038] Figure 9 This is a schematic diagram of an air conditioner provided in an embodiment of this disclosure.

[0039] Figure label:

[0040] 1: Compressor; 2: Oil separator; 3: Four-way valve; 4: First outdoor heat exchanger; 5: Second outdoor heat exchanger; 6: Heat storage device; 7: High-pressure liquid receiver; 8: First indoor heat exchanger; 9: First indoor electronic expansion valve; 10: Second indoor heat exchanger; 11: Second indoor electronic expansion valve; 12: Third indoor heat exchanger; 13: Third indoor electronic expansion valve; 14: Fourth indoor heat exchanger; 15: Fourth indoor electronic expansion valve; 16: Gas pipe solenoid valve; 17: Liquid pipe solenoid valve; 18: First outdoor... 19: Second outdoor electronic expansion valve; 20: Main solenoid valve; 21: Bypass solenoid valve; 22: Liquid pipe shut-off valve; 23: Gas pipe shut-off valve; 24: Outdoor fan; 25: Subcooler; 26: Three-way valve; 27: Gas-liquid separator; 200: Device for controlling the air conditioner; 701: Determination module; 702: Control module; 300: Device for controlling the air conditioner; 800: Processor; 801: Memory; 802: Communication interface; 803: Bus; 100: Air conditioner. Detailed Implementation

[0041] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0042] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0043] Unless otherwise stated, the term "multiple" means two or more.

[0044] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0045] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0046] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0047] Combination Figure 1As shown in the illustration, this disclosure provides an air conditioner, including: a refrigerant circulation loop, a heat exchange and defrosting branch, a heat storage branch, and a high-pressure gaseous refrigerant branch or a high-pressure liquid refrigerant branch. The refrigerant circulation loop includes: a compressor 1, a four-way valve 3, a first outdoor heat exchanger 4, and an indoor heat exchanger. The first end of the four-way valve 3 is connected to the first end of the compressor 1, the second end is connected to the first end of the first outdoor heat exchanger 4, the third end is connected to the first end of the indoor heat exchanger, and the fourth end is connected to the second end of the compressor 1. The heat exchange and defrosting branch includes a second outdoor heat exchanger 5 and a three-way valve 26. The first end of the second outdoor heat exchanger 5 is connected to the first end of the three-way valve 26, the second end is connected to the second end of the indoor heat exchanger, and the second end of the three-way valve 26 is connected to the first end of the first outdoor heat exchanger 4. The high-pressure gaseous refrigerant branch includes a gas pipe solenoid valve 16, the first end of which is connected to the first end of the compressor 1, and the second end of which is connected to the third end of the three-way valve 26. And / or, a high-pressure liquid refrigerant branch, including a liquid pipe solenoid valve 17, the first end of which is connected to the second end of the indoor heat exchanger, and the second end of which is connected to the third end of a three-way valve 26.

[0048] The air conditioner provided in this embodiment features a heat exchange defrosting branch including a second outdoor heat exchanger 5 and a three-way valve 26. During the initial heating phase, both the first and second outdoor heat exchangers 4 and 5 absorb heat. Once set conditions are met, a portion of the high-temperature refrigerant is allowed to enter the defrosting branch via a high-pressure gaseous refrigerant branch or a high-pressure liquid refrigerant branch, thus defrosting the second outdoor heat exchanger 5. The heat in the second outdoor heat exchanger 5 heats the inlet air temperature of the first outdoor heat exchanger 4. The heat storage branch allows refrigerant from the high-pressure gaseous or liquid refrigerant branch to enter the defrosting branch, increasing the air conditioner's heating capacity and improving defrosting. This reduces the impact on the air conditioner's heating capacity during defrosting, enhancing the user's heating experience and comfort.

[0049] Optionally, the air conditioner also includes a heat storage branch. The heat storage branch connects the gas pipe solenoid valve 16 and / or the liquid pipe solenoid valve 17 to the third end of the three-way valve 26. Thus, in the initial heating stage, the first outdoor heat exchanger 4 and the second outdoor heat exchanger 5 absorb heat from each other. After the set conditions are met, a portion of the high-temperature refrigerant is allowed to enter the heat exchange defrost branch and / or the heat storage branch through the high-pressure gaseous refrigerant branch or the high-pressure liquid refrigerant branch, achieving defrosting of the second outdoor heat exchanger 5. The heat in the second outdoor heat exchanger 5 and the heat storage branch heats the inlet air temperature of the first outdoor heat exchanger 4. The heat storage branch allows refrigerant from the high-pressure gaseous refrigerant branch or the high-pressure liquid refrigerant branch to enter the heat exchange defrost branch and / or the heat storage branch, acquiring heat from the heat storage device 6 during heating or defrosting, improving the heating capacity of the air conditioner and achieving better defrosting. This reduces the impact on the air conditioner's heating capacity during defrosting, improving the user's heating experience and comfort.

[0050] Optionally, the heat storage branch also includes: a heat storage device 6, a heat storage main line, and a bypass branch. The heat storage device 6 is installed on the heat storage main line. The bypass branch is connected in parallel with the heat storage main line. Thus, in the initial heating stage, the first outdoor heat exchanger 4 and the second outdoor heat exchanger 5 absorb heat from each other. After the set conditions are met, a portion of the high-temperature refrigerant is allowed to enter the heat exchange defrosting branch through the high-pressure gaseous refrigerant branch or the high-pressure liquid refrigerant branch, and / or the heat storage main line or the bypass branch, thereby defrosting the second outdoor heat exchanger 5. The heat from the second outdoor heat exchanger 5 and the heat storage main line or bypass branch heats the inlet air temperature of the first outdoor heat exchanger 4. The main or bypass heat storage circuit allows refrigerant from the high-pressure gaseous or liquid refrigerant circuit to flow into the heat exchange defrosting circuit and / or the main or bypass heat storage circuit. During heating or defrosting, this refrigerant captures heat from the heat storage device 6, increasing the air conditioner's heating capacity and improving defrosting. This reduces the impact on the air conditioner's heating capacity during defrosting, enhancing the user's heating experience and comfort.

[0051] Optionally, the heat storage branch also includes a main solenoid valve 20 and a bypass solenoid valve 21. The main solenoid valve 20 is located on the main heat storage branch and controls its on / off state. The bypass solenoid valve 21 is located on the bypass branch and controls its on / off state. Thus, if the main solenoid valve 20 is open and the bypass solenoid valve 21 is closed, the refrigerant in the high-pressure gaseous refrigerant branch or the high-pressure liquid refrigerant branch flows through the heat storage device 6 and enters the heat exchange defrosting branch, acquiring heat from the heat storage device 6. Defrosting is then performed simultaneously using the sensible heat from the heat storage device 6 and the exhaust pipe, improving the air conditioner's heating capacity and achieving better defrosting. If the main solenoid valve 20 is closed and the bypass solenoid valve 21 is open, the refrigerant transports the high-temperature refrigerant to the second outdoor heat exchanger 5 through the bypass branch. If the temperature of the heat storage device 6 is low at this time, heat exchange between the heat storage device 6 and the high-temperature refrigerant will not occur, avoiding a decrease in the temperature of the high-temperature refrigerant and thus improving the defrosting effect.

[0052] Optionally, the refrigerant circulation loop further includes: an oil separator 2, a first outdoor electronic expansion valve 18, a gas-liquid separator 27, an indoor electronic expansion valve, and a high-pressure receiver 7. The oil separator 2 is located between the first end of the compressor 1 and the first end of the four-way valve 3. The high-pressure receiver 7 is located between the second end of the first outdoor heat exchanger 4 and the second end of the indoor heat exchanger. The first outdoor electronic expansion valve 18 is located between the second end of the first outdoor heat exchanger 4 and the high-pressure receiver 7. The indoor electronic expansion valve is located between the high-pressure receiver 7 and the second end of the indoor heat exchanger.

[0053] Optionally, the heat exchange defrosting branch also includes: a first outdoor electronic expansion valve 19. The first outdoor electronic expansion valve 19 is disposed between the second end of the second outdoor heat exchanger 5 and the high-pressure liquid receiver 7.

[0054] Optionally, the refrigerant circulation loop also includes a one-way valve. The one-way valve is located between the first end of the compressor 1 and the first end of the four-way valve 3.

[0055] Optionally, the refrigerant circulation loop also includes a subcooler 25. The subcooler 25 is disposed between the high-pressure liquid receiver 7 and the indoor electronic expansion valve.

[0056] Optionally, the refrigerant circulation loop also includes a gas pipe shut-off valve 23. The gas pipe shut-off valve 23 is located between the first end of the indoor heat exchanger and the third end of the four-way valve 3.

[0057] Optionally, the refrigerant circulation loop also includes a liquid line shut-off valve 22. The liquid line shut-off valve 22 is located between the subcooler 25 and the indoor electronic expansion valve.

[0058] Optionally, the air conditioner also includes an outdoor fan 24. The outdoor fan 24 is located on the first side of the second outdoor heat exchanger 5, and can blow air towards the second side of the second outdoor heat exchanger 5. The first outdoor heat exchanger 4 is located on the second side of the second outdoor heat exchanger 5. In this way, the outdoor fan 24 blows air from the outside sequentially to the second outdoor heat exchanger 5 and the first outdoor heat exchanger 4. When the second outdoor heat exchanger 5 releases heat, the outdoor fan 24 draws heat from the second outdoor heat exchanger 5 and then blows it onto the first outdoor heat exchanger 4 for defrosting, thus achieving defrosting of the outdoor heat exchangers.

[0059] Alternatively, the thermal storage device 6 can take the form of a water tank. The energy source for the thermal storage device 6 can be solar energy.

[0060] Optionally, the number of indoor heat exchangers can be one or more. Specifically, when the number of indoor heat exchangers is four, the indoor heat exchangers include a first indoor heat exchanger 8, a second indoor heat exchanger 10, a third indoor heat exchanger 12, and a fourth indoor heat exchanger 14 connected in parallel.

[0061] Optionally, the number of indoor electronic expansion valves is the same as the number of indoor heat exchangers. Specifically, when there are four indoor heat exchangers, there are four indoor electronic expansion valves, including a first indoor electronic expansion valve 9, a second indoor electronic expansion valve 11, a third indoor electronic expansion valve 13, and a fourth indoor electronic expansion valve 15 connected in parallel. The first indoor electronic expansion valve 9 connects the first indoor heat exchanger 8 to the high-pressure liquid receiver 7. The second indoor electronic expansion valve 11 connects the second indoor heat exchanger 10 to the high-pressure liquid receiver 7. The third indoor electronic expansion valve 13 connects the third indoor heat exchanger 12 to the high-pressure liquid receiver 7. The fourth indoor electronic expansion valve 15 connects the fourth indoor heat exchanger 14 to the high-pressure liquid receiver 7.

[0062] Combination Figure 5 As shown in the embodiments of this disclosure, a method for controlling an air conditioner is provided, comprising:

[0063] S501, the air conditioner determines the operating mode of the air conditioner.

[0064] S502, the air conditioner controls the opening and closing of the four-way valve 3, three-way valve 26, gas pipe solenoid valve 16, liquid pipe solenoid valve 17, main solenoid valve 20 and bypass solenoid valve 21 according to the air conditioner's operating mode, so as to enable the air conditioner to operate without frost or defrost.

[0065] The method for controlling an air conditioner provided in this embodiment of the present disclosure, by setting up a heat exchange defrosting branch including a second outdoor heat exchanger 5 and a three-way valve 26, allows the first outdoor heat exchanger 4 and the second outdoor heat exchanger 5 in the refrigerant circulation loop to extract heat from the environment during the initial heating stage. After reaching the set conditions, they can enter the heat exchange defrosting branch and / or the heat storage branch through the high-pressure gaseous refrigerant branch or the high-pressure liquid refrigerant branch, thereby defrosting the second outdoor heat exchanger 5. The heat in the second outdoor heat exchanger 5 and the heat storage branch heats the inlet air temperature of the first outdoor heat exchanger 4. The heat storage branch allows the refrigerant in the high-pressure gaseous refrigerant branch or the high-pressure liquid refrigerant branch to flow through the heat storage device 6 and then enter the heat exchange defrosting branch, acquiring heat from the heat storage device 6 during air conditioner defrosting, thus achieving better defrosting. Controlling the opening and closing of the four-way valve 3, three-way valve 26, gas pipe solenoid valve 16, and liquid pipe solenoid valve 17 according to the air conditioner's operating mode facilitates switching the refrigerant flow direction in the first outdoor heat exchanger 4 and the second outdoor heat exchanger 5. It also allows the first and second heat exchangers to initially acquire heat from the environment, and once the set conditions are met, the refrigerant enters the heat exchange defrosting branch and / or heat storage branch through the high-pressure gaseous refrigerant branch or the high-pressure liquid refrigerant branch. This reduces the impact on the air conditioner's heating capacity during defrosting, improving the user's heating experience and comfort.

[0066] Optionally, the air conditioner determines its operating mode, including: the air conditioner determines its operating mode as a normal cooling mode. Alternatively, the air conditioner determines its heating mode type based on the pipe temperature of the first outdoor heat exchanger 4, including: frost-free heating mode, reverse circulation defrosting mode, high-pressure gas pipe exhaust sensible heat storage device defrosting mode, and high-pressure liquid pipe waste heat storage device defrosting mode. In this way, the pipe temperature of the first outdoor heat exchanger 4 can reflect the degree of frost on the first outdoor heat exchanger 4. The heating mode of the air conditioner can be determined based on the pipe temperature of the first outdoor heat exchanger 4. This helps to better determine the operating mode of the air conditioner, which is either the conventional cooling mode, the frost-free heating mode, the reverse circulation defrosting mode, the defrosting mode of the high-pressure gas pipe exhaust sensible heat storage device, or the defrosting mode of the high-pressure liquid pipe waste heat storage device. This allows for more precise control of the opening and closing of the four-way valve 3, the three-way valve 26, the gas pipe solenoid valve 16, and the liquid pipe solenoid valve 17 according to the operating mode of the air conditioner, so as to achieve frost-free operation or defrosting operation of the air conditioner.

[0067] Optionally, the air conditioner determines its heating mode type as follows based on the pipe temperature of the first outdoor heat exchanger 4: frost-free heating mode, reverse circulation defrosting mode, high-pressure gas pipe exhaust sensible heat storage device defrosting mode, or high-pressure liquid pipe waste heat storage device defrosting mode. Specifically: when the pipe temperature of the first outdoor heat exchanger 4 is in a first temperature range, the air conditioner determines its heating mode as reverse circulation defrosting mode. When the pipe temperature of the first outdoor heat exchanger 4 is in a second temperature range, the air conditioner determines its heating mode as high-pressure gas pipe exhaust sensible heat storage device defrosting mode. When the pipe temperature of the first outdoor heat exchanger 4 is in a third temperature range, the air conditioner determines its heating mode as high-pressure liquid pipe waste heat storage device defrosting mode. When the pipe temperature of the first outdoor heat exchanger 4 is in a fourth temperature range, the air conditioner determines its heating mode as frost-free heating mode. Wherein, the first temperature range is smaller than the second temperature range, the second temperature range is smaller than the third temperature range, and the third temperature range is smaller than the fourth temperature range. Thus, if the pipe temperature of the first outdoor heat exchanger 4 is in the lowest first temperature range, the air conditioner experiences the most severe frosting. In this case, the air conditioner's operating mode is switched to heating reverse circulation defrosting mode, maximizing the heating capacity for defrosting and achieving defrosting with maximum force. If the pipe temperature of the first outdoor heat exchanger 4 is in a lower second temperature range, and the air conditioner still experiences severe frosting, the air conditioner's operating mode is switched to heating high-pressure gas pipe exhaust sensible heat storage device defrosting mode, maximizing the heating capacity for defrosting and achieving defrosting with greater force. If the pipe temperature of the first outdoor heat exchanger 4 is in a higher third temperature range, and the air conditioner experiences less frosting, the air conditioner's operating mode is switched to heating high-pressure liquid pipe waste heat storage device defrosting mode, maximizing the heating capacity for defrosting and achieving defrosting with less force. If the pipe temperature of the first outdoor heat exchanger 4 is in a higher fourth temperature range, and the air conditioner experiences the least frosting, the air conditioner's operating mode is switched to heating high-pressure liquid pipe waste heat storage device defrosting mode, maximizing the heating capacity for defrosting and achieving defrosting with minimal force. This allows for more precise determination of the air conditioner's operating mode based on the pipe temperature of the first outdoor heat exchanger 4, thereby enabling more accurate determination of the operating mode based on the degree of frost buildup. Consequently, it allows for more precise control of the heating capacity and defrosting intensity used during defrosting. This reduces the impact on the air conditioner's heating capacity during defrosting, improving the user's heating experience and comfort.

[0068] Optionally, the first temperature range can be (-∞, -6℃). The second temperature range can be [-6℃, -4℃]. The third temperature range can be [-4℃, -2℃]. The values ​​of the first, second, and third temperature ranges can be adjusted according to the air conditioner's properties, and will not be listed here. Limiting the values ​​of the first, second, and third temperature ranges allows for more precise determination of the air conditioner's operating mode based on the pipe temperature of the first outdoor heat exchanger 4, thereby more accurately determining the operating mode based on the degree of frost buildup, and further more precisely controlling the heating capacity and defrosting intensity used during defrosting. This reduces the impact on the air conditioner's heating capacity during defrosting, improving the user's heating experience and comfort.

[0069] Optionally, combined Figure 2 As shown, the air conditioner controls the opening and closing of the four-way valve 3, three-way valve 26, gas pipe solenoid valve 16, liquid pipe solenoid valve 17, main solenoid valve 20, and bypass solenoid valve 21 according to the air conditioner's operating mode. This includes: when the air conditioner's operating mode is the normal cooling mode, the air conditioner controls the first and second ends of the four-way valve 3 to be connected, the third and fourth ends to be connected, the first and second ends of the three-way valve 26 to be connected, and the gas pipe solenoid valve 16, liquid pipe solenoid valve 17, main solenoid valve 20, and bypass solenoid valve 21 to be closed. This allows the refrigerant in the refrigerant circulation loop to flow sequentially through the compressor 1, four-way valve 3, first outdoor heat exchanger 4, indoor heat exchanger, and four-way valve 3 before flowing back to the compressor 1. Similarly, the refrigerant in the heat exchange defrost branch flows sequentially through the compressor 1, four-way valve 3, three-way valve 26, second outdoor heat exchanger 5, indoor heat exchanger, and four-way valve 3 before flowing back to the compressor 1. In this way, when the air conditioner is operating in normal cooling mode, the refrigerant that has completed heat exchange does not pass through the high-pressure gaseous refrigerant branch or the high-pressure liquid refrigerant branch. Both the first outdoor heat exchanger 4 and the second outdoor heat exchanger 5 in the heat exchange defrost branch release heat, acting as condensers, while the indoor heat exchanger absorbs heat, acting as an evaporator. At this time, the heat exchange defrost branch is not used for defrosting. Under the action of the outdoor fan 24, the airflow sequentially passes through the second outdoor heat exchanger 5 and the first outdoor heat exchanger 4, releasing heat from the air. This facilitates better heat release from the outdoor heat exchangers, improving the air conditioner's cooling experience.

[0070] Optionally, combined Figure 3As shown, the air conditioner controls the opening and closing of the four-way valve 3, three-way valve 26, gas pipe solenoid valve 16, liquid pipe solenoid valve 17, main solenoid valve 20, and bypass solenoid valve 21 according to the air conditioner's operating mode. This includes: when the air conditioner's operating mode is heating frost-free mode, the air conditioner controls the first and third ends of the four-way valve 3 to be connected, the second and fourth ends to be connected, the first and second ends of the three-way valve 26 to be connected, and the gas pipe solenoid valve 16, liquid pipe solenoid valve 17, main solenoid valve 20, and bypass solenoid valve 21 to be closed. This allows the refrigerant in the refrigerant circulation loop to flow sequentially through the compressor 1, four-way valve 3, indoor heat exchanger, first outdoor heat exchanger 4, and four-way valve 3 before flowing back to the compressor 1. Similarly, the refrigerant in the heat exchange defrosting branch flows sequentially through the compressor 1, four-way valve 3, indoor heat exchanger, second outdoor heat exchanger 5, three-way valve 26, and four-way valve 3 before flowing back to the compressor 1. Thus, when the air conditioner is operating in heating frost-free mode, the refrigerant recirculated from the indoor heat exchanger does not pass through the high-pressure gaseous refrigerant branch or the high-pressure liquid refrigerant branch, but enters the heat exchange defrost branch. The indoor heat exchanger releases heat, acting as a condenser, while the first outdoor heat exchanger 4 and the second outdoor heat exchanger 5 absorb heat, acting as evaporators. Under the action of the outdoor fan 24, the airflow sequentially passes through the second outdoor heat exchanger 5 and the first outdoor heat exchanger 4, absorbing heat from the air. At this time, the heat exchange defrost branch is used to obtain heat from the environment to improve the user's heating experience and enhance user comfort.

[0071] Optionally, combined Figure 4As shown, the air conditioner controls the opening and closing of the four-way valve 3, three-way valve 26, gas pipe solenoid valve 16, liquid pipe solenoid valve 17, main solenoid valve 20, and bypass solenoid valve 21 according to the air conditioner's operating mode. This includes: when the air conditioner's operating mode is heating high-pressure gas pipe exhaust sensible heat storage device defrosting mode, the air conditioner controls the gas pipe solenoid valve 16 to open, the liquid pipe solenoid valve 17 to close, the first and third ends of the three-way valve 26 to connect, and the first and third ends of the four-way valve 3 to connect, and the second and fourth ends to connect, so that the refrigerant in the refrigerant circulation loop flows sequentially through the compressor 1, the four-way valve 3, the indoor heat exchanger, the first outdoor heat exchanger 4, and the four-way valve 3 before flowing back to the compressor 1. The air conditioner controls the on / off states of the main solenoid valve 20 and the bypass solenoid valve 21 based on the temperature T1 of the heat storage device 6 and the temperature T2 of the gas pipe solenoid valve 16. This ensures that the refrigerant in the high-pressure gaseous refrigerant branch and the heat exchange defrost branch flows sequentially through the compressor 1, gas pipe solenoid valve 16, main solenoid valve 20 or bypass solenoid valve 21, three-way valve 26, second outdoor heat exchanger 5, first outdoor heat exchanger 4, and four-way valve 3 before returning to the compressor 1. Thus, when the air conditioner is operating in the high-pressure gas pipe exhaust sensible heat storage device defrost mode, the required heating capacity and defrost force are relatively large, and the refrigerant enters the heat exchange defrost branch and / or the heat storage branch through the high-pressure gaseous refrigerant branch. The indoor heat exchanger releases heat and acts as a condenser. The first outdoor heat exchanger 4 absorbs heat and acts as an evaporator. Because the second outdoor heat exchanger 5 contains high-temperature gaseous refrigerant that enters through a high-pressure gaseous refrigerant branch, the frost on its surface can be melted. Simultaneously, the air intake temperature of the first outdoor heat exchanger 4 can be heated, thus defrosting the first outdoor heat exchanger 4. Since both the indoor heat exchanger and the first outdoor heat exchanger 4 can then operate normally for heating, the defrosting process minimizes the impact on the air conditioner's heating capacity, improving the user's heating experience and comfort.

[0072] Optionally, the air conditioner controls the switching states of the main solenoid valve 20 and the bypass solenoid valve 21 to be one open and one closed based on the temperature T1 of the heat storage device 6 and the temperature T2 of the gas pipe solenoid valve 16. This includes: when T1≥T2, controlling the main solenoid valve 20 to open and the bypass solenoid valve 21 to close, so that the refrigerant in the high-pressure gaseous refrigerant branch and the heat exchange defrost branch flows sequentially through the compressor 1, the gas pipe solenoid valve 16, the main solenoid valve 20, the three-way valve 26, the second outdoor heat exchanger 5, the first outdoor heat exchanger 4, and the four-way valve 3 before flowing back to the compressor 1; when T1<T2, controlling the main solenoid valve 20 to close and the bypass solenoid valve 21 to open, so that the refrigerant in the high-pressure gaseous refrigerant branch and the heat exchange defrost branch flows sequentially through the compressor 1, the gas pipe solenoid valve 16, the bypass solenoid valve 21, the three-way valve 26, the second outdoor heat exchanger 5, the first outdoor heat exchanger 4, and the four-way valve 3 before flowing back to the compressor 1. Thus, when the air conditioner is operating in the defrosting mode of the high-pressure gas pipe exhaust sensible heat storage device, if the temperature of the heat storage device 6 is high, exceeding the temperature of the gas pipe solenoid valve 16 in the high-pressure gaseous refrigerant branch, the main solenoid valve 20 opens and the bypass solenoid valve 21 closes. This allows the refrigerant in the high-pressure gaseous refrigerant branch to flow through the heat storage device 6 and enter the heat exchange defrosting branch, acquiring heat from the heat storage device 6. Defrosting is then performed simultaneously using the sensible heat from the heat storage device 6 and the exhaust pipe, increasing the air conditioner's heating capacity and achieving better defrosting. If the temperature of the heat storage device 6 is low, below the temperature of the gas pipe solenoid valve 16 in the high-pressure gaseous refrigerant branch, the main solenoid valve 20 closes and the bypass solenoid valve 21 opens. This allows the refrigerant in the high-pressure gaseous refrigerant branch to directly enter the heat exchange defrosting branch without flowing through the heat storage device 6, without acquiring heat from the heat storage device 6. Defrosting is performed solely using the sensible heat from the exhaust pipe, without further increasing the air conditioner's heating capacity. By controlling the opening and closing of the main solenoid valve 20 and the bypass solenoid valve 21 based on the temperature of the gas pipe solenoid valve 16, it is beneficial to determine whether the refrigerant in the high-pressure gaseous refrigerant branch flows through the heat storage device 6 and enters the heat exchange defrosting branch during air conditioner defrosting. This helps to improve the heating capacity of the air conditioner and achieve better defrosting, or, without additionally increasing the heating capacity of the air conditioner. This improves the user's heating experience.

[0073] Optionally, the air conditioner controls the opening and closing of the four-way valve 3, the three-way valve 26, the gas pipe solenoid valve 16, the liquid pipe solenoid valve 17, the main solenoid valve 20, and the bypass solenoid valve 21 according to the air conditioner's operating mode. This includes: when the air conditioner's operating mode is the heating high-pressure liquid pipe waste heat storage device defrosting mode, the air conditioner controls the first end of the four-way valve 3 to connect with the third end and the second end to connect with the fourth end, the first end of the three-way valve 26 to connect with the third end, the liquid pipe solenoid valve 17 to open, and the gas pipe solenoid valve 16 to close, so that the refrigerant in the refrigerant circulation loop flows sequentially through the compressor 1, the four-way valve 3, the indoor heat exchanger, the first outdoor heat exchanger 4, and the four-way valve 3 before flowing back to the compressor 1. The air conditioner controls the on / off states of the main solenoid valve 20 and the bypass solenoid valve 21 based on the temperature T1 of the heat storage device 6 and the temperature T3 of the liquid pipe solenoid valve 17. This ensures that the refrigerant in the high-pressure liquid refrigerant branch and the heat exchange defrost branch flows sequentially through the compressor 1, four-way valve 3, indoor heat exchanger, liquid pipe solenoid valve 17, main solenoid valve 20 or bypass solenoid valve 21, three-way valve 26, second outdoor heat exchanger 5, first outdoor heat exchanger 4, and four-way valve 3 before returning to the compressor 1. Thus, when the air conditioner is operating in the heating mode with high-pressure liquid pipe waste heat storage device defrost mode, the required heating capacity and defrosting force are relatively small. The refrigerant that has completed heat exchange enters the heat exchange defrost branch and / or the heat storage branch through the high-pressure liquid refrigerant branch. It controls the indoor heat exchanger to release heat, acting as a condenser. It controls the first outdoor heat exchanger 4 to absorb heat, acting as an evaporator. The second outdoor heat exchanger 5, with its high-temperature liquid refrigerant entering through a high-pressure liquid refrigerant branch, can melt the frost on its surface and simultaneously heat the air intake of the first outdoor heat exchanger 4, thus defrosting the first outdoor heat exchanger 4. Since both the indoor heat exchanger and the first outdoor heat exchanger 4 can then operate normally for heating, defrosting reduces the impact on the air conditioner's heating capacity, improving the user's heating experience and comfort.

[0074] Optionally, the air conditioner controls the opening and closing states of the main solenoid valve 20 and the bypass solenoid valve 21 to be one open and one closed according to the temperature T1 of the heat storage device 6 and the temperature T3 of the liquid pipe solenoid valve 17. This includes: when T1≤T3, the air conditioner controls the main solenoid valve 20 to open and the bypass solenoid valve 21 to close, so that the refrigerant in the high-pressure liquid refrigerant branch and the heat exchange defrost branch flows sequentially through the compressor 1, the four-way valve 3, the indoor heat exchanger, the liquid pipe solenoid valve 17, the main solenoid valve 20, the three-way valve 26, the second outdoor heat exchanger 5, the first outdoor heat exchanger 4, and the four-way valve 3 before flowing back to the compressor 1. When T1 > T3, the main solenoid valve 20 of the air conditioner is closed, and the bypass solenoid valve 21 is opened. This allows the refrigerant in the high-pressure liquid refrigerant branch and the heat exchange defrosting branch to flow sequentially through the compressor 1, four-way valve 3, indoor heat exchanger, liquid pipe solenoid valve 17, bypass solenoid valve 21, three-way valve 26, second outdoor heat exchanger 5, first outdoor heat exchanger 4, and back to the compressor 1. Thus, when the air conditioner is operating in the heating mode with the high-pressure liquid pipe waste heat storage device for defrosting, if the temperature of the heat storage device 6 is higher than the temperature of the liquid pipe solenoid valve 17 in the high-pressure liquid refrigerant branch, the main heat storage solenoid valve 20 is opened, and the bypass solenoid valve 21 is closed. This allows the refrigerant in the high-pressure liquid refrigerant branch to flow through the heat storage device 6 and enter the heat exchange defrosting branch, acquiring heat from the heat storage device 6. The heat storage device 6 and the liquid pipe waste heat are used simultaneously for defrosting, improving the air conditioner's heating capacity and achieving better defrosting. If the temperature of the heat storage device 6 is low, below the temperature of the liquid refrigerant solenoid valve 17 in the high-pressure liquid refrigerant branch, the main solenoid valve 20 will close and the bypass solenoid valve 21 will open. This prevents the refrigerant in the high-pressure liquid refrigerant branch from flowing through the heat storage device 6 and directly enters the heat exchange defrosting branch. It does not absorb heat from the heat storage device 6, but only uses the residual heat of the liquid pipe for defrosting, without additionally increasing the air conditioner's heating capacity. By controlling the opening and closing of the main solenoid valve 20 and the bypass solenoid valve 21 based on the temperature of the liquid refrigerant solenoid valve 17, it is beneficial to determine whether the refrigerant in the high-pressure liquid refrigerant branch flows through the heat storage device 6 before entering the heat exchange defrosting branch during defrosting. This helps to improve the air conditioner's heating capacity and achieve better defrosting, or, alternatively, without additionally increasing the air conditioner's heating capacity. This improves the user's heating experience.

[0075] Optionally, the air conditioner controls the opening and closing of the four-way valve 3, three-way valve 26, gas pipe solenoid valve 16, liquid pipe solenoid valve 17, main solenoid valve 20, and bypass solenoid valve 21 according to the air conditioner's operating mode. This includes: when the air conditioner's operating mode is heating reverse circulation defrosting mode, the air conditioner controls the first end of the four-way valve 3 to connect with the second end and the third end to connect with the fourth end, the first end of the three-way valve 26 to connect with the second end, and the gas pipe solenoid valve 16, liquid pipe solenoid valve 17, main solenoid valve 20, and bypass solenoid valve 21 to close. This allows the refrigerant in the refrigerant circulation loop to flow sequentially through the compressor 1, four-way valve 3, first outdoor heat exchanger 4, indoor heat exchanger, and four-way valve 3 before flowing back to the compressor 1. Similarly, the refrigerant in the heat exchange defrosting branch flows sequentially through the compressor 1, four-way valve 3, three-way valve 26, second outdoor heat exchanger 5, indoor heat exchanger, and four-way valve 3 before flowing back to the compressor 1. Thus, when the air conditioner is operating in heating reverse cycle defrosting mode, the required heating capacity and defrosting force are at their maximum. The refrigerant that has completed heat exchange does not enter the heat exchange defrosting branch or the heat storage branch through the high-pressure gaseous refrigerant branch or the high-pressure liquid refrigerant branch; however, the refrigerant from compressor 1 enters the heat exchange defrosting branch. The indoor heat exchanger acts as the system evaporator, while the first outdoor heat exchanger 4 and the second outdoor heat exchanger 5 both release heat for defrosting, functioning as condensers.

[0076] Combination Figure 6 As shown in the embodiments of this disclosure, another method for controlling an air conditioner is provided, including:

[0077] S601, the air conditioner determines the operating mode of the air conditioner.

[0078] S602, when the air conditioner is in normal cooling mode, the first and second ends of the four-way valve are connected, the third and fourth ends are connected, the first and second ends of the three-way valve are connected, and the gas pipe solenoid valve, liquid pipe solenoid valve, main solenoid valve and bypass solenoid valve are closed.

[0079] S603, when the air conditioner is in heating frost-free mode, the first and third ends of the four-way valve are connected, the second and fourth ends are connected, the first and second ends of the three-way valve are connected, and the gas pipe solenoid valve, liquid pipe solenoid valve, main solenoid valve and bypass solenoid valve are closed.

[0080] S604, when the air conditioner is in heating high-pressure gas pipe exhaust sensible heat storage device defrosting mode, the air conditioner controls the gas pipe solenoid valve to open, the liquid pipe solenoid valve to close, the first and third ends of the three-way valve to connect, and the first and third ends of the four-way valve to connect, and the second and fourth ends of the four-way valve to connect.

[0081] S605, the air conditioner controls the opening and closing states of the main solenoid valve and the bypass solenoid valve according to the temperature T1 of the heat storage device and the temperature T2 of the gas pipe solenoid valve, so that one is open and the other is closed.

[0082] S606, when the air conditioner is in heating high-pressure liquid pipe waste heat storage device defrosting mode, the first and third ends of the four-way valve are connected, the second and fourth ends are connected, the first and third ends of the three-way valve are connected, the liquid pipe solenoid valve is opened, and the gas pipe solenoid valve is closed.

[0083] S607, the air conditioner controls the opening and closing states of the main solenoid valve and the bypass solenoid valve according to the temperature T1 of the heat storage device and the temperature T3 of the liquid pipe solenoid valve, so that one is open and the other is closed.

[0084] S608, when the air conditioner is in heating reverse circulation defrosting mode, the first and second ends of the four-way valve are connected, the third and fourth ends are connected, the first and second ends of the three-way valve are connected, and the gas pipe solenoid valve, liquid pipe solenoid valve, main solenoid valve and bypass solenoid valve are closed.

[0085] The method for controlling an air conditioner provided in this embodiment, when the air conditioner is operating in conventional cooling mode, does not allow the refrigerant that has completed heat exchange to pass through the high-pressure gaseous refrigerant branch or the high-pressure liquid refrigerant branch. In the heat exchange defrost branch, both the first and second outdoor heat exchangers release heat, acting as condensers, while the indoor heat exchanger absorbs heat, acting as an evaporator. At this time, the heat exchange defrost branch is not used for defrosting. Under the action of the outdoor fan, the airflow sequentially passes through the second and first outdoor heat exchangers, releasing heat from the air. This facilitates better heat release from the outdoor heat exchangers, improving the air conditioner's cooling experience. When the air conditioner is operating in heating frost-free mode, the refrigerant recirculated from the indoor heat exchanger does not pass through the high-pressure gaseous refrigerant branch or the high-pressure liquid refrigerant branch, and enters the heat exchange defrost branch. The indoor heat exchanger releases heat, acting as a condenser, while both the first and second outdoor heat exchangers absorb heat, acting as evaporators. Under the action of the outdoor fan, the airflow sequentially passes through the second outdoor heat exchanger and the first outdoor heat exchanger, absorbing heat from the air. At this time, the heat exchange defrosting branch is used to obtain heat from the environment to improve the user's heating experience and enhance user comfort. When the air conditioner is operating in the defrosting mode of the high-pressure gas pipe exhaust sensible heat storage device, the defrosting requires a large amount of heating capacity and defrosting force. The refrigerant enters the heat exchange defrosting branch and / or the heat storage branch through the high-pressure gaseous refrigerant branch. The indoor heat exchanger releases heat and acts as a condenser. The first outdoor heat exchanger absorbs heat and acts as an evaporator. Because the second outdoor heat exchanger contains high-temperature gaseous refrigerant that enters through the high-pressure gaseous refrigerant branch, it can melt the frost on the surface of the second outdoor heat exchanger and simultaneously heat the inlet air temperature of the first outdoor heat exchanger, thereby achieving defrosting of the first outdoor heat exchanger. Since the indoor heat exchanger and the first outdoor heat exchanger can achieve normal heating at this time, the impact on the air conditioner's heating capacity is reduced during defrosting, improving the user's heating experience and enhancing user comfort. When the air conditioner is operating in heating mode with a high-pressure liquid refrigerant pipe and waste heat storage device, the required heating capacity and defrosting force are relatively small. The refrigerant, having completed heat exchange, enters the heat exchange defrosting branch and / or the heat storage branch through the high-pressure liquid refrigerant branch. The indoor heat exchanger releases heat, acting as a condenser. The first outdoor heat exchanger absorbs heat, acting as an evaporator. The second outdoor heat exchanger, with its high-temperature liquid refrigerant entering through the high-pressure liquid refrigerant branch, melts the frost on its surface and simultaneously heats the air intake of the first outdoor heat exchanger, thus defrosting it. Since both the indoor and outdoor heat exchangers can operate normally during this time, defrosting minimizes the impact on the air conditioner's heating capacity, improving the user's heating experience and comfort.When the air conditioner is operating in heating reverse cycle defrosting mode, the required heating capacity and defrosting force are at their maximum. The refrigerant that has completed heat exchange does not enter the heat exchange defrosting branch and the heat storage branch through the high-pressure gaseous refrigerant branch or the high-pressure liquid refrigerant branch; instead, the refrigerant from the compressor enters the heat exchange defrosting branch. The indoor heat exchanger acts as the system evaporator, while the first and second outdoor heat exchangers release heat for defrosting, functioning as condensers. Thus, during defrosting, the impact on the air conditioner's heating capacity is reduced, improving the user's heating experience and comfort.

[0086] Combination Figure 7 As shown, this embodiment of the disclosure provides a device 200 for controlling an air conditioner, including a determining module 701 and a control module 702. The determining module 701 is configured to determine the operating mode of the air conditioner. The control module 702 is configured to control the opening and closing of a four-way valve, a three-way valve, a gas pipe solenoid valve, and a liquid pipe solenoid valve according to the operating mode of the air conditioner, so as to enable the air conditioner to operate in frost-free mode or defrost mode.

[0087] The device for controlling an air conditioner provided in this embodiment of the invention, by setting up a heat exchange defrosting branch including a second outdoor heat exchanger and a three-way valve, allows the first and second outdoor heat exchangers in the refrigerant circulation loop to initially acquire heat. After reaching the system's set conditions, the refrigerant can enter the heat exchange defrosting branch and / or the heat storage branch through a high-pressure gaseous refrigerant branch or a high-pressure liquid refrigerant branch, thereby defrosting the second outdoor heat exchanger. The heat in the second outdoor heat exchanger and the heat storage branch heats the inlet air temperature of the first outdoor heat exchanger. The heat storage branch allows the refrigerant in the high-pressure gaseous refrigerant branch or the high-pressure liquid refrigerant branch to flow through a heat storage device before entering the heat exchange defrosting branch, acquiring heat from the heat storage device during air conditioner defrosting, thus improving the air conditioner's heating capacity and achieving better defrosting. Controlling the opening and closing of the four-way valve, three-way valve, gas pipe solenoid valve, and liquid pipe solenoid valve according to the air conditioner's operating mode facilitates switching the refrigerant flow direction in the first and second outdoor heat exchangers. It also allows the refrigerant that has completed heat exchange to enter the defrosting branch and / or heat storage branch via the high-pressure gaseous refrigerant branch or the high-pressure liquid refrigerant branch. This reduces the impact on the air conditioner's heating capacity during defrosting, improving the user's heating experience and comfort.

[0088] Combination Figure 8As shown in the figure, this disclosure provides an apparatus 300 for controlling an air conditioner, including a processor 800 and a memory 801. Optionally, the apparatus may further include a communication interface 802 and a bus 803. The processor 800, communication interface 802, and memory 801 can communicate with each other via the bus 803. The communication interface 802 can be used for information transmission. The processor 800 can call logical instructions in the memory 801 to execute the method for controlling the air conditioner described in the above embodiment.

[0089] Furthermore, the logic instructions in the aforementioned memory 801 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0090] The memory 801, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 800 executes functional applications and data processing by running the program instructions / modules stored in the memory 801, thereby implementing the method for controlling the air conditioner described in the above embodiments.

[0091] The memory 801 may include a program storage area and a data storage area. The program storage area may store the operating system and application programs required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 801 may include high-speed random access memory and may also include non-volatile memory.

[0092] Combination Figure 9 As shown, this disclosure provides an air conditioner 100, including: an air conditioner body, and the aforementioned device 200 (300) for controlling the air conditioner. The device 200 (300) for controlling the air conditioner is installed on the air conditioner body. The installation relationship described herein is not limited to placement inside the air conditioner, but also includes installation connections with other components of the air conditioner, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the device 200 (300) for controlling the air conditioner can be adapted to feasible air conditioner bodies to achieve other feasible embodiments.

[0093] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling an air conditioner.

[0094] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0095] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0096] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0097] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0098] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0099] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. An air conditioner characterized by comprising: Comprise: A refrigerant circulation loop, comprising: a compressor, a four-way valve, a first outdoor heat exchanger, an indoor heat exchanger, the first end of the four-way valve is connected with the first end of the compressor, the second end is connected with the first end of the first outdoor heat exchanger, the third end is connected with the first end of the indoor heat exchanger, and the fourth end is connected with the second end of the compressor; A heat exchange defrosting branch, comprising a second outdoor heat exchanger and a three-way valve, the first end of the second outdoor heat exchanger is connected with the first end of the three-way valve, and the second end is connected with the second end of the indoor heat exchanger, the second end of the three-way valve is connected with the first end of the first outdoor heat exchanger; A high-pressure gaseous refrigerant branch, comprising a gas pipe electromagnetic valve, the first end of the gas pipe electromagnetic valve is connected with the first end of the compressor, and the second end is connected with the third end of the three-way valve; and / or, A high-pressure liquid refrigerant branch, comprising a liquid pipe electromagnetic valve, the first end of the liquid pipe electromagnetic valve is connected with the second end of the indoor heat exchanger, and the second end is connected with the third end of the three-way valve; A heat storage branch, the gas pipe electromagnetic valve and / or the liquid pipe electromagnetic valve are connected with the third end of the three-way valve through the heat storage branch; the heat storage branch comprises a heat storage device; An outdoor fan, and the outdoor fan is arranged on the first side of the second outdoor heat exchanger, and the first outdoor heat exchanger is arranged on the second side of the second outdoor heat exchanger; Wherein, in the case that the operation mode of the air conditioner is a heating high-pressure gas pipe exhaust heat storage device defrosting mode, the gas pipe electromagnetic valve is controlled to be opened, the liquid pipe electromagnetic valve is controlled to be closed, the first end and the third end of the three-way valve are communicated, the first end and the third end of the four-way valve are communicated, and the second end and the fourth end are communicated, so that the refrigerant in the refrigerant circulation loop flows through the compressor, the four-way valve, the indoor heat exchanger, the first outdoor heat exchanger, the four-way valve and then flows back to the compressor in sequence; the heat storage branch is controlled to be conducted according to the heat storage device temperature T1 and the gas pipe electromagnetic valve temperature T2, so that the refrigerant in the high-pressure gaseous refrigerant branch and the heat exchange defrosting branch flows through the compressor, the gas pipe electromagnetic valve, the heat storage branch, the three-way valve, the second outdoor heat exchanger, the first outdoor heat exchanger and the four-way valve in sequence and then flows back to the compressor.

2. The air conditioner of claim 1, wherein The heat storage branch further comprises: A heat storage main line, the heat storage device is arranged on the heat storage main line; and A bypass branch, the bypass branch is connected with the heat storage main line in parallel.

3. The air conditioner of claim 2, wherein The heat storage branch further comprises: A main electromagnetic valve, arranged on the heat storage main line, the main electromagnetic valve controls the on-off of the heat storage main line; A bypass electromagnetic valve, arranged on the bypass branch, the bypass electromagnetic valve controls the on-off of the bypass branch.

4. A method for controlling an air conditioner, characterized by, Applied to the air conditioner of claim 3, comprising: Determine the operation mode of the air conditioner; According to the operation mode of the air conditioner, control the on-off of the four-way valve, the three-way valve, the gas pipe electromagnetic valve, the liquid pipe electromagnetic valve, the main electromagnetic valve and the bypass electromagnetic valve, so that the air conditioner realizes frost-free operation or defrosting operation; Wherein, according to the operation mode of the air conditioner, control the on-off of the four-way valve, the three-way valve, the gas pipe electromagnetic valve, the liquid pipe electromagnetic valve, the main electromagnetic valve and the bypass electromagnetic valve, comprising: In the case that the operation mode of the air conditioner is the heating high-pressure gas pipe exhaust sensible heat storage device defrosting mode, the gas pipe electromagnetic valve is controlled to be opened, the liquid pipe electromagnetic valve is controlled to be closed, the first end and the third end of the three-way valve are communicated, the first end and the third end of the four-way valve are communicated, and the second end and the fourth end of the four-way valve are communicated, so that the refrigerant in the refrigerant circulation loop flows through the compressor, the four-way valve, the indoor heat exchanger, the first outdoor heat exchanger, the four-way valve in sequence and then flows back to the compressor. According to the storage device temperature T1 and the gas pipe electromagnetic valve temperature T2, the opening and closing states of the main electromagnetic valve and the bypass electromagnetic valve are controlled to be one open and one closed, so that the refrigerant in the high-pressure gaseous refrigerant branch and the heat exchange defrosting branch flows through the compressor, the gas pipe electromagnetic valve, the main electromagnetic valve or the bypass electromagnetic valve, the three-way valve, the second outdoor heat exchanger, the first outdoor heat exchanger, the four-way valve in sequence and then flows back to the compressor.

5. The method of claim 4, wherein, The operation mode of the air conditioner is determined, comprising: The operation mode of the air conditioner is determined to be a conventional refrigeration mode; or, According to the pipe temperature of the first outdoor heat exchanger, the heating mode type of the air conditioner is determined to be a heating frostless mode, a heating reverse cycle defrosting mode, a heating high-pressure gas pipe exhaust sensible heat storage device defrosting mode, or a heating high-pressure liquid pipe waste heat storage device defrosting mode.

6. The method of claim 4, wherein, According to the storage device temperature T1 and the gas pipe electromagnetic valve temperature T2, the opening and closing states of the main electromagnetic valve and the bypass electromagnetic valve are controlled to be one open and one closed, comprising: In the case that T1 is greater than or equal to T2, the main electromagnetic valve is controlled to be opened, and the bypass electromagnetic valve is controlled to be closed, so that the refrigerant in the high-pressure gaseous refrigerant branch and the heat exchange defrosting branch flows through the compressor, the gas pipe electromagnetic valve, the main electromagnetic valve, the three-way valve, the second outdoor heat exchanger, the first outdoor heat exchanger, the four-way valve in sequence and then flows back to the compressor; In the case that T1 is less than T2, the main electromagnetic valve is controlled to be closed, and the bypass electromagnetic valve is controlled to be opened, so that the refrigerant in the high-pressure gaseous refrigerant branch and the heat exchange defrosting branch flows through the compressor, the gas pipe electromagnetic valve, the bypass electromagnetic valve, the three-way valve, the second outdoor heat exchanger, the first outdoor heat exchanger, the four-way valve in sequence and then flows back to the compressor.

7. The method of claim 4, wherein, According to the operation mode of the air conditioner, the opening and closing of the four-way valve, the three-way valve, the gas pipe electromagnetic valve, the liquid pipe electromagnetic valve, the main electromagnetic valve and the bypass electromagnetic valve are controlled, and the method further comprises: In the case that the operation mode of the air conditioner is the heating high-pressure liquid pipe waste heat storage device heat defrosting mode, the first end and the third end of the four-way valve are communicated, the first end and the third end of the three-way valve are communicated, the liquid pipe electromagnetic valve is controlled to be opened, and the gas pipe electromagnetic valve is controlled to be closed, so that the refrigerant in the refrigerant circulation loop flows through the compressor, the four-way valve, the indoor heat exchanger, the first outdoor heat exchanger, the four-way valve in sequence and then flows back to the compressor. According to the storage device temperature T1 and the liquid pipe electromagnetic valve temperature T3, the opening and closing states of the main electromagnetic valve and the bypass electromagnetic valve are controlled to be one open and one closed, so that the refrigerant in the high-pressure liquid refrigerant branch and the heat exchange defrosting branch flows through the compressor, the four-way valve, the indoor heat exchanger, the liquid pipe electromagnetic valve, the main electromagnetic valve or the bypass electromagnetic valve, the three-way valve, the second outdoor heat exchanger, the first outdoor heat exchanger, the four-way valve in sequence and then flows back to the compressor.

8. The method of claim 7, wherein, According to the storage device temperature T1 and the liquid pipe electromagnetic valve temperature T3, the opening and closing states of the main electromagnetic valve and the bypass electromagnetic valve are controlled to be one open and one closed, comprising: In the case of T1≥T3, the main electromagnetic valve is opened and the bypass electromagnetic valve is closed to make the refrigerant in the high-pressure liquid refrigerant branch and the heat-exchange defrosting branch flow through the compressor, the four-way valve, the indoor heat exchanger, the liquid pipe electromagnetic valve, the main electromagnetic valve, the three-way valve, the second outdoor heat exchanger, the first outdoor heat exchanger, the four-way valve in turn and then flow back to the compressor. In the case of T1 9. A device for controlling an air conditioner, characterized in that, The application is applied to the air conditioner of claim 3, comprising: A determination module is configured to determine the operation mode of the air conditioner; The control module is configured to control the on-off of the four-way valve, the three-way valve, the gas pipe electromagnetic valve, the liquid pipe electromagnetic valve, the main electromagnetic valve and the bypass electromagnetic valve according to the operation mode of the air conditioner to make the air conditioner run in the frost-free mode or the defrosting mode; specifically comprising: in the case of the operation mode of the air conditioner being the heating high-pressure gas pipe exhaust heat storage device defrosting mode, the gas pipe electromagnetic valve is opened, the liquid pipe electromagnetic valve is closed, the first end and the third end of the three-way valve are communicated, the first end and the third end of the four-way valve are communicated, and the second end and the fourth end of the four-way valve are communicated to make the refrigerant in the refrigerant circulation loop flow through the compressor, the four-way valve, the indoor heat exchanger, the first outdoor heat exchanger, the four-way valve in turn and then flow back to the compressor; according to the storage device temperature T1 and the gas pipe electromagnetic valve temperature T2, the opening and closing states of the main electromagnetic valve and the bypass electromagnetic valve are controlled to be one open and one closed to make the refrigerant in the high-pressure gaseous refrigerant branch and the heat-exchange defrosting branch flow through the compressor, the gas pipe electromagnetic valve, the main electromagnetic valve or the bypass electromagnetic valve, the three-way valve, the second outdoor heat exchanger, the first outdoor heat exchanger, the four-way valve in turn and then flow back to the compressor.

10. An apparatus for controlling an air conditioner, comprising a processor and a memory having stored program instructions, characterized in that, The processor is configured to execute the method for controlling the air conditioner of any one of claims 5 to 8 when running the program instructions.

11. An air conditioner characterized by comprising: Comprising: The air conditioner body comprises: a refrigerant circulation loop comprising: a compressor, a four-way valve, a first outdoor heat exchanger, an indoor heat exchanger, a three-way valve, a second outdoor heat exchanger, a high-pressure gaseous refrigerant branch comprising a gas pipe electromagnetic valve, and / or a high-pressure liquid refrigerant branch comprising a liquid pipe electromagnetic valve; and a heat-exchange defrosting branch comprising the second outdoor heat exchanger and the three-way valve, the first end of the second outdoor heat exchanger being connected with the first end of the three-way valve, the second end of the second outdoor heat exchanger being connected with the second end of the indoor heat exchanger, the second end of the three-way valve being connected with the first end of the first outdoor heat exchanger; The device for controlling the air conditioner of claim 9 or 10 is installed in the air conditioner body.

12. A storage medium storing program instructions, characterized in that, The program instructions, when executed, perform the method for controlling an air conditioner as claimed in any one of claims 5 to 8.

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