Operation control method for air conditioner, operation control device and storage medium

Abstract

Disclosed in the present application are an operation control method for an air conditioner, an air conditioner, an operation control device and a computer-readable storage medium. The air conditioner comprises a compressor (100), a four-way valve (200), an indoor heat exchanger (300), an outdoor heat exchanger (400), a hot gas bypass pipe (500), a throttling device (600), a first solenoid valve (700) and a second solenoid valve (800). The operation control method comprises: acquiring an operating mode of the air conditioner and an outdoor ambient temperature (S210); and, when the air conditioner operates in a heating mode and the outdoor ambient temperature is less than a first preset value, controlling the first solenoid valve (700) to close and controlling the second solenoid valve (800) to open (S220).

Description

Air conditioner operation control method, operation control device and storage medium

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202410948783.X, filed on July 15, 2024, entitled "Operation Control Method, Operation Control Device and Storage Medium for Air Conditioner", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of air conditioning technology, and in particular to an air conditioner operation control method, an air conditioner, an operation control device, and a computer-readable storage medium. Background Technology

[0004] Air conditioners often have an electric heater installed in the drip tray below the outdoor heat exchanger. When the temperature is low, the electric heater is turned on to heat the water in the drip tray and prevent it from freezing. The electric heater is a low-energy-efficiency device with high power consumption. However, current air conditioners have increasingly higher energy efficiency requirements, and adding an electric heater will reduce the overall energy efficiency of the unit and also pose a risk of electric leakage.

[0005] Setting up additional refrigerant piping to use higher-temperature refrigerant to heat the water pan can replace the function of an electric heater, but it also makes the air conditioner's refrigerant circuit more complex, temperature control less precise, and reduces the overall energy efficiency of the unit.

[0006] Summary of the Invention

[0007] The purpose of this application is to at least partially solve one of the technical problems existing in the prior art, and to provide an air conditioner operation control method, an air conditioner, an operation control device, and a computer-readable storage medium.

[0008] In a first aspect, embodiments of this application provide an operation control method for an air conditioner. The air conditioner includes a hot gas bypass pipe, a throttling device, a first solenoid valve, and a second solenoid valve. The hot gas bypass pipe is disposed in a water collection pan at the bottom of an outdoor heat exchanger, and one end of the hot gas bypass pipe is connected to an indoor heat exchanger. One end of the throttling device is connected to the outdoor heat exchanger. One end of the first solenoid valve is connected to the connection point between the indoor heat exchanger and the hot gas bypass pipe, and the other end of the first solenoid valve is connected to the other end of the throttling device. One end of the second solenoid valve is connected to the connection point between the throttling device and the first solenoid valve, and the other end of the second solenoid valve is connected to the other end of the hot gas bypass pipe. The operation control method includes:

[0009] Obtain the operating mode of the air conditioner and the outdoor ambient temperature; and

[0010] When the air conditioner is operating in heating mode and the outdoor ambient temperature is lower than a first preset value, the first solenoid valve is controlled to close and the second solenoid valve is controlled to open.

[0011] The operation control method provided in some embodiments of this application further includes: when the air conditioner is operating in cooling mode, controlling the first solenoid valve to open and controlling the second solenoid valve to close.

[0012] The operation control method provided in some embodiments of this application further includes: when the air conditioner is operating in heating mode and the outdoor ambient temperature is greater than or equal to the first preset value, controlling the first solenoid valve to open and controlling the second solenoid valve to close.

[0013] According to some embodiments of this application, the operation control method obtains the pipe temperature of the hot gas bypass pipe when the first solenoid valve is closed and the second solenoid valve is open, and adjusts the opening degree of the throttling device according to the pipe temperature.

[0014] According to the operation control method provided in some embodiments of this application, when the pipe temperature is less than a second preset value, the opening degree of the throttling device is reduced.

[0015] According to some embodiments of the present application, the operation control method provides that when the pipe temperature is greater than or equal to a second preset value, the opening degree of the throttling device is controlled to remain unchanged.

[0016] Secondly, embodiments of this application provide an air conditioner, including a hot gas bypass pipe, a throttling device, a first solenoid valve, and a second solenoid valve, wherein:

[0017] The hot gas bypass pipe is installed in the water receiving pan at the bottom of the outdoor heat exchanger, and one end of the hot gas bypass pipe is connected to the indoor heat exchanger.

[0018] One end of the throttling device is connected to the outdoor heat exchanger.

[0019] One end of the first solenoid valve is connected to the connection point between the indoor heat exchanger and the hot gas bypass pipe, and the other end of the first solenoid valve is connected to the other end of the throttling device; and

[0020] One end of the second solenoid valve is connected to the connection point between the throttling device and the first solenoid valve, and the other end of the second solenoid valve is connected to the other end of the hot gas bypass pipe.

[0021] The air conditioner provided according to some embodiments of this application further includes a compressor and a four-way valve, the four-way valve being respectively connected to the air outlet of the compressor, the exhaust port of the compressor, the indoor heat exchanger and the outdoor heat exchanger; the throttling device is an electronic expansion valve.

[0022] Thirdly, embodiments of this application provide an operation control device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the operation control method described in the second aspect of the embodiments above.

[0023] Fourthly, embodiments of this application provide an air conditioner including the operation control device described in the third aspect embodiment.

[0024] Fifthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the operation control method described in the second aspect of the embodiments above.

[0025] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the description, claims and drawings. Attached Figure Description

[0026] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0027] The present application will be further described below with reference to the accompanying drawings and embodiments;

[0028] Figure 1 is a system schematic diagram of an air conditioner provided in an embodiment of this application;

[0029] Figure 2 is a flowchart of an air conditioner operation control method provided in an embodiment of this application;

[0030] Figure 3 is a flowchart of a specific embodiment of the air conditioner operation control method provided in this application; and

[0031] Figure 4 is a schematic diagram of the operation control device provided in an embodiment of this application. Detailed Implementation

[0032] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.

[0033] In the description of the embodiments of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number, while "above," "below," "within," etc. are understood to include the stated number. "At least one" refers to one or more, and "at least one of the following" and similar expressions refer to any combination of these items, including any combination of single or multiple items. If "first," "second," etc., are used in the description, they are only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0034] It should be noted that the terms "setting," "installing," and "connecting" in the embodiments of this application should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of the above terms in the embodiments of this application in conjunction with the specific content of the technical solution. For example, the term "connection" can be a mechanical connection, an electrical connection, or a connection that allows for mutual communication; it can be a direct connection or an indirect connection through an intermediate medium.

[0035] It should be noted that the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0036] Air conditioners often have an electric heater installed in the drip tray below the outdoor heat exchanger. This heater is activated when the temperature is low to heat the water in the tray and prevent it from freezing. However, electric heaters are low-efficiency devices, with an energy efficiency rating of no more than 1.0, and consume a lot of electricity. Air conditioners, on the other hand, are high-efficiency products, and current energy efficiency requirements are increasingly stringent. Adding an electric heater would lower the overall energy efficiency and also pose a risk of electrical leakage. Given the current trend of advocating energy conservation, emission reduction, and the use of clean energy, low-efficiency electric heating components should be gradually phased out. Installing refrigerant piping in the drip tray below the outdoor heat exchanger, using higher-temperature refrigerant to heat the tray, is a feasible alternative to the electric heater. However, the additional refrigerant piping would complicate the air conditioner's refrigerant circuit, leading to less precise temperature control and ultimately reducing the overall energy efficiency.

[0037] Based on this, embodiments of this application provide an air conditioner operation control method, an air conditioner, an operation control device, and a computer-readable storage medium, which constructs a simple refrigerant circuit to achieve heating by connecting the refrigerant to the water pan, and has a good temperature control effect, thereby improving the overall energy efficiency of the unit.

[0038] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0039] Figure 1 is a system schematic diagram of an air conditioner provided in an embodiment of this application. Referring to Figure 1, a first aspect embodiment of this application provides an air conditioner including a compressor 100, a four-way valve 200, an indoor heat exchanger 300, an outdoor heat exchanger 400, a hot gas bypass pipe 500, a throttling device 600, a first solenoid valve 700, and a second solenoid valve 800, wherein:

[0040] The first end of the four-way valve 200 is connected to the exhaust port of the compressor 100; the fourth end of the four-way valve 200 is connected to the return port of the compressor 100; one end of the indoor heat exchanger 300 is connected to the second end of the four-way valve 200; and one end of the outdoor heat exchanger 400 is connected to the third end of the four-way valve 200. It can be understood that when the air conditioner is operating in heating mode, the four-way valve 200 is in a state where its first and second ends are connected, as well as its third and fourth ends, are open. At this time, the high-temperature, high-pressure refrigerant from the exhaust port of the compressor 100 enters the four-way valve 200 through its first end and is transferred to the indoor heat exchanger 300 through its second end. Simultaneously, the low-temperature, low-pressure refrigerant from the outdoor heat exchanger 400 exits through the four-way valve 200. The refrigerant from the third end of the compressor 100 enters the four-way valve 200 and flows back to the return port of the compressor 100 from the fourth end of the four-way valve 200, as shown by the dashed arrow in Figure 1. When the air conditioner is running in cooling mode, the four-way valve 200 is in a state where its first and third ends are connected and its second and fourth ends are connected. At this time, the high-temperature and high-pressure refrigerant from the exhaust port of the compressor 100 enters the four-way valve 200 from the first end of the four-way valve 200 and is transferred to the outdoor heat exchanger 400 from the third end of the four-way valve 200. At the same time, the low-temperature and low-pressure refrigerant from the indoor heat exchanger 300 enters the four-way valve 200 from the second end of the four-way valve 200 and flows back to the return port of the compressor 100 from the fourth end of the four-way valve 200, as shown by the solid arrow in Figure 1.

[0041] A hot gas bypass pipe 500 is installed in the water receiving pan at the bottom of the outdoor heat exchanger 400, with one end of the hot gas bypass pipe 500 connected to the other end of the indoor heat exchanger 300; one end of the throttling device 600 is connected to the other end of the outdoor heat exchanger 400; one end of the first solenoid valve 700 is connected to the connection point between the indoor heat exchanger 300 and the hot gas bypass pipe 500, and the other end of the first solenoid valve 700 is connected to the other end of the throttling device 600; one end of the second solenoid valve 800 is connected to the connection point between the throttling device 600 and the first solenoid valve 700, and the other end of the second solenoid valve 800 is connected to the other end of the hot gas bypass pipe 500.

[0042] According to the embodiments of this application, an air conditioner is provided by installing a hot gas bypass pipe 500 at the water collection pan at the bottom of the outdoor heat exchanger 400. This allows for the flow of high-temperature refrigerant to the hot gas bypass pipe 500 to heat the water collection pan in cases where there is a risk of freezing. A first solenoid valve 700 and a second solenoid valve 800 are used in conjunction with the hot gas bypass pipe 500 to modify the refrigerant piping. One end of the hot gas bypass pipe 500 is directly connected to the indoor heat exchanger 300. The first solenoid valve 700 is connected between the connection point of the indoor heat exchanger 300 and the hot gas bypass pipe 500 and the throttling device 600. The second solenoid valve 800 is connected between the connection point of the first solenoid valve 700 and the throttling device 600 and the hot gas bypass pipe 500. This creates a simple refrigerant circuit. When the first solenoid valve 700 is open, the refrigerant can flow directly from the indoor heat exchanger 300 to the throttling device 600 via the first solenoid valve 700, or from the throttling device 600 to the indoor heat exchanger 300 via the first solenoid valve 700. When the second solenoid valve 800 is open and the first solenoid valve 700 is closed, the higher-temperature refrigerant can flow from the indoor heat exchanger 300 to the hot gas bypass pipe 500 to heat the water pan, and then flow through the second solenoid valve 800 to the throttling device 600, and then to the outdoor heat exchanger 400. The refrigerant circuit constructed by the first solenoid valve 700, the second solenoid valve 800, and the hot gas bypass pipe 500 is simple and easy to control, has a good temperature control effect, and can improve the overall energy efficiency of the unit.

[0043] In some embodiments of the air conditioner provided in this application, the throttling device 600 is an electronic expansion valve. It is understood that an electronic expansion valve is a throttling element that allows the refrigerant flow into the refrigeration unit according to a preset program. In some situations where the load changes drastically or the operating conditions are wide, traditional throttling elements such as capillary tubes and thermostatic expansion valves can no longer meet the requirements for comfort and energy saving, while electronic expansion valves can meet the requirements very well.

[0044] Referring to Figure 2, a second aspect of this application provides an operation control method for an air conditioner as described in the first aspect embodiment above, including but not limited to steps S210 to S220:

[0045] Step S210: Obtain the air conditioner's operating mode and outdoor ambient temperature;

[0046] Step S220: When the air conditioner is operating in heating mode and the outdoor ambient temperature is lower than a first preset value, the first solenoid valve 700 is closed and the second solenoid valve 800 is opened. For example, the first preset value can be set to 0°C.

[0047] According to the operation control method provided in the embodiments of this application, when the air conditioner is operating in heating mode and the outdoor ambient temperature is low, for example, the outdoor ambient temperature is below 0°C, it indicates that the water in the drip tray at the bottom of the outdoor heat exchanger 400 has a high risk of freezing under the current operating state. At this time, by controlling the first solenoid valve 700 to close, the high-temperature and high-pressure refrigerant discharged from the exhaust port of the compressor 100 cannot flow to the throttling device 600 through the first solenoid valve 700 after passing through the indoor heat exchanger 300. Instead, it first flows to the hot gas bypass pipe 500 to heat the drip tray at the bottom of the outdoor heat exchanger 400. At the same time, the second solenoid valve 800 is also controlled to open, so that the refrigerant flowing out of the hot gas bypass pipe 500 can smoothly flow to the throttling device 600 through the second solenoid valve 800, and then flow to the outdoor heat exchanger 400. The refrigerant flow direction is shown by the dotted arrow in Figure 1. This realizes the use of high-temperature refrigerant in the air conditioner to prevent the drip tray at the bottom of the outdoor heat exchanger 400 from freezing, which can improve the overall energy efficiency.

[0048] In some embodiments of this application, the operation control method further includes: when the air conditioner is running in cooling mode, controlling the first solenoid valve 700 to open and controlling the second solenoid valve 800 to close.

[0049] Understandably, in cooling mode, the high-temperature, high-pressure refrigerant from the exhaust port of compressor 100 enters four-way valve 200 from the first end of four-way valve 200, and is then transferred to outdoor heat exchanger 400 from the third end of four-way valve 200. After passing through throttling device 600, and with the second solenoid valve 800 closed and the first solenoid valve 700 open, the refrigerant directly enters indoor heat exchanger 300 after passing through the first solenoid valve 700 for heat exchange. The refrigerant flow direction is shown by the solid arrow in Figure 1. There is no refrigerant flow in hot gas bypass pipe 500, and it does not participate in refrigerant circulation and heat exchange. The low-temperature, low-pressure refrigerant from indoor heat exchanger 300 enters four-way valve 200 from the second end of four-way valve 200, and flows back to the return port of compressor 100 from the fourth end of four-way valve 200.

[0050] In some embodiments of this application, the operation control method further includes: when the air conditioner is operating in heating mode and the outdoor ambient temperature is greater than or equal to a first preset value, controlling the first solenoid valve 700 to open and controlling the second solenoid valve 800 to close. For example, the first preset value can be set to 0°C.

[0051] In this embodiment, when the air conditioner is operating in heating mode and the outdoor ambient temperature is higher than 0°C, it means that there is no risk of the water in the drip tray at the bottom of the outdoor heat exchanger 400 freezing under the current operating state. The high-temperature and high-pressure refrigerant from the exhaust port of the compressor 100 enters the four-way valve 200 from the first end of the four-way valve 200 and is transferred to the indoor heat exchanger 300 from the second end of the four-way valve 200. Since the first solenoid valve 700 is open, the refrigerant directly passes through the first solenoid valve 700, and then enters the throttling device 600 before entering the outdoor heat exchanger 400 for heat exchange. Also, since the second solenoid valve 800 is closed, there is no refrigerant flow in the hot gas bypass pipe 500, and it does not participate in the refrigerant circulation and heat exchange. The low-temperature and low-pressure refrigerant from the outdoor heat exchanger 400 enters the four-way valve 200 from the third end of the four-way valve 200 and flows back to the return port of the compressor 100 from the fourth end of the four-way valve 200.

[0052] In the operation control method provided in some embodiments of this application, when the first solenoid valve 700 is closed and the second solenoid valve 800 is open, the pipe temperature of the hot gas bypass pipe 500 is obtained, and the opening degree of the throttling device 600 is adjusted according to the pipe temperature.

[0053] In this embodiment, with the first solenoid valve 700 closed and the second solenoid valve 800 open, the high-temperature refrigerant in the air conditioner is needed to prevent the water tray at the bottom of the outdoor heat exchanger 400 from freezing. Therefore, the temperature of the hot gas bypass pipe 500 needs to be high enough to heat the water tray at the bottom of the outdoor heat exchanger 400. Adjusting the opening of the throttling device 600 according to the pipe temperature ensures that the temperature of the hot gas bypass pipe 500 is sufficiently high. Specifically, when the pipe temperature is lower than a second preset value, the opening of the throttling device 600 is reduced. For example, the second preset value is set to 20°C. Therefore, when the temperature of the hot gas bypass pipe 500 is lower than 20°C, reducing the opening of the throttling device 600 allows more high-temperature refrigerant to accumulate in the hot gas bypass pipe 500, which helps to increase the temperature of the hot gas bypass pipe 500.

[0054] In some embodiments of the present application, the operation control method provides that when the pipe temperature is greater than or equal to a second preset value, the opening degree of the throttling device 600 is kept unchanged.

[0055] It is understandable that when the pipe temperature is greater than or equal to the second preset value, such as greater than or equal to 20°C, it means that the current hot gas bypass pipe 500 has a high enough pipe temperature to provide a good heating effect on the water receiving pan at the bottom of the outdoor heat exchanger 400. At this time, the opening of the control throttling device 600 remains unchanged, and there is no need to adjust the refrigerant flow rate.

[0056] The following, with reference to Figure 3, provides a detailed description of the air conditioner's operation control method in heating mode according to an embodiment of this application:

[0057] Step S301: Heating mode is turned on; at this time, the four-way valve 200 is in the state of opening its first end and second end and opening its third end and fourth end. At this time, the high temperature and high pressure refrigerant from the exhaust port of the compressor 100 enters the four-way valve 200 from the first end and is transferred to the indoor heat exchanger 300 from the second end of the four-way valve 200; jump to step S302;

[0058] Step S302: Obtain the outdoor ambient temperature T4; Proceed to step S303;

[0059] Step S303: Determine if the outdoor ambient temperature T4 is less than 0℃. If yes, proceed to step S305; otherwise, proceed to step S304.

[0060] Step S304: Control the first solenoid valve 700 to open and control the second solenoid valve 800 to close; jump to step S302;

[0061] Step S305: Control the first solenoid valve 700 to close and control the second solenoid valve 800 to open; jump to step S306;

[0062] Step S306: The hot gas bypass pipe 500 heats the water collection pan at the bottom of the outdoor heat exchanger 400. At this time, the high-temperature and high-pressure refrigerant discharged from the exhaust port of the compressor 100 cannot flow to the throttling device 600 through the first solenoid valve 700 after passing through the indoor heat exchanger 300. Instead, it first flows to the hot gas bypass pipe 500 to heat the water collection pan at the bottom of the outdoor heat exchanger 400. At the same time, the second solenoid valve 800 is also controlled to open, so that the refrigerant flowing out from the hot gas bypass pipe 500 can smoothly flow to the throttling device 600 through the second solenoid valve 800, and then flow to the outdoor heat exchanger 400, thereby using the high-temperature refrigerant in the air conditioner to prevent the water collection pan at the bottom of the outdoor heat exchanger 400 from freezing. Proceed to step S307.

[0063] Step S307: Obtain the pipe temperature Tg of the hot gas bypass pipe 500; proceed to step S308;

[0064] Step S308: Determine whether the pipe temperature Tg of the hot gas bypass pipe 500 is less than 20℃. If yes, proceed to step S309; ​​if no, proceed to step S310.

[0065] Step S309: Reduce the opening of the throttling device 600; at this time, more high-temperature refrigerant can accumulate in the hot gas bypass pipe 500, which is beneficial to increase the pipe temperature of the hot gas bypass pipe 500.

[0066] Step S310: Keep the opening of the throttling device 600; this indicates that the current hot gas bypass pipe 500 is hot enough to provide a good heating effect on the water receiving pan at the bottom of the outdoor heat exchanger 400. At this time, keep the opening of the throttling device 600 unchanged and do not need to adjust the refrigerant flow.

[0067] In this embodiment, the air conditioner uses a hot gas bypass pipe 500 installed at the water collection pan at the bottom of the outdoor heat exchanger 400. This allows for the flow of high-temperature refrigerant to the hot gas bypass pipe 500 to heat the water collection pan, even when there is a risk of freezing in the water at the bottom of the outdoor heat exchanger 400. A first solenoid valve 700 and a second solenoid valve 800 are used in conjunction with the hot gas bypass pipe 500 to modify the refrigerant piping. One end of the hot gas bypass pipe 500 is directly connected to the indoor heat exchanger 300, and the first solenoid valve 700 is connected at the connection point between the indoor heat exchanger 300 and the hot gas bypass pipe 500. Between the throttling device 600 and the first solenoid valve 700, the second solenoid valve 800 is connected between the connection point of the first solenoid valve 700 and the throttling device 600 and the hot gas bypass pipe 500, thus constructing a simple refrigerant circuit. When the first solenoid valve 700 is open, the refrigerant can flow directly from the indoor heat exchanger 300 to the throttling device 600 via the first solenoid valve 700. When the second solenoid valve 800 is open and the first solenoid valve 700 is closed, the higher-temperature refrigerant can flow from the indoor heat exchanger 300 to the hot gas bypass pipe 500 to heat the water pan, and then flow to the throttling device 600 via the second solenoid valve 800. The refrigerant flows from device 600 to the outdoor heat exchanger 400. The refrigerant circuit constructed by the first solenoid valve 700, the second solenoid valve 800, and the hot gas bypass pipe 500 is simple and easy to control, with good temperature control and improved overall energy efficiency. Specifically, when the air conditioner is running in heating mode and the outdoor ambient temperature is low, for example, below 0°C, it means that the water in the drip tray at the bottom of the outdoor heat exchanger 400 has a high risk of freezing. At this time, by controlling the first solenoid valve 700 to close, the high-temperature and high-pressure refrigerant discharged from the compressor 100 is released. After passing through the indoor heat exchanger 300, the refrigerant cannot flow to the throttling device 600 via the first solenoid valve 700. Instead, it first flows to the hot gas bypass pipe 500 to heat the water tray at the bottom of the outdoor heat exchanger 400. At the same time, it controls the second solenoid valve 800 to open, so that the refrigerant flowing out of the hot gas bypass pipe 500 can flow smoothly to the throttling device 600 via the second solenoid valve 800, and then to the outdoor heat exchanger 400. The refrigerant flow direction is shown by the dotted arrow in Figure 1. This utilizes the high-temperature refrigerant in the air conditioner to prevent the water tray at the bottom of the outdoor heat exchanger 400 from freezing, thereby improving the overall energy efficiency of the unit.

[0068] Additionally, referring to FIG4, a third aspect embodiment of this application provides an operation control device 400, including a memory 410, a processor 420, and a computer program stored in the memory 410 and executable on the processor 420. The processor 420 executes the program to implement the operation control method of the second aspect embodiment above, for example, executing method steps S210 to S220 in FIG2 or executing steps S301 to S310 in FIG3.

[0069] In addition, a fourth aspect of this application provides an air conditioner including the operation control device 400 of the third aspect embodiment.

[0070] In addition, a fifth aspect of this application provides a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the operation control method of the second aspect embodiment above, such as performing method steps S210 to S220 in FIG2 or performing steps S301 to S310 in FIG3.

[0071] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which may include computer storage media or non-transitory media and communication media or transient media. As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information such as computer-readable instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc DVD or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0072] Some embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A method of controlling operation of an air conditioner, wherein, The air conditioner comprises a hot gas bypass pipe, a throttling device, a first electromagnetic valve and a second electromagnetic valve, the hot gas bypass pipe is arranged at a water pan at the bottom of an outdoor heat exchanger, one end of the hot gas bypass pipe is connected to an indoor heat exchanger; one end of the throttling device is connected to the outdoor heat exchanger; one end of the first electromagnetic valve is connected to a connection point of the indoor heat exchanger and the hot gas bypass pipe, the other end of the first electromagnetic valve is connected to the other end of the throttling device; one end of the second electromagnetic valve is connected to a connection point of the throttling device and the first electromagnetic valve, the other end of the second electromagnetic valve is connected to the other end of the hot gas bypass pipe. The operation control method comprises: obtaining an operation mode of the air conditioner and an outdoor environment temperature; and when the air conditioner operates in a heating mode and the outdoor environment temperature is less than a first preset value, controlling the first electromagnetic valve to be closed and controlling the second electromagnetic valve to be opened.

2. The operation control method according to claim 1, further comprising: when the air conditioner operates in a cooling mode, controlling the first electromagnetic valve to be opened and controlling the second electromagnetic valve to be closed.

3. The operation control method according to claim 1 or 2, further comprising: when the air conditioner operates in the heating mode and the outdoor environment temperature is greater than or equal to the first preset value, controlling the first electromagnetic valve to be opened and controlling the second electromagnetic valve to be closed.

4. The operation control method according to any one of claims 1 to 3, wherein under the condition that the first electromagnetic valve is closed and the second electromagnetic valve is opened, obtaining a pipe temperature of the hot gas bypass pipe, and adjusting an opening degree of the throttling device according to the pipe temperature.

5. The operation control method according to claim 4, wherein when the pipe temperature is less than a second preset value, reducing the opening degree of the throttling device.

6. The operation control method according to claim 4 or 5, wherein when the pipe temperature is greater than or equal to the second preset value, controlling the opening degree of the throttling device to remain unchanged.

7. An air conditioner, comprising: a hot gas bypass pipe arranged at a water pan at the bottom of an outdoor heat exchanger, one end of the hot gas bypass pipe being connected to an indoor heat exchanger; a throttling device, one end of the throttling device being connected to the outdoor heat exchanger; a first electromagnetic valve, one end of the first electromagnetic valve being connected to a connection point of the indoor heat exchanger and the hot gas bypass pipe, the other end of the first electromagnetic valve being connected to the other end of the throttling device; and a second electromagnetic valve, one end of the second electromagnetic valve being connected to a connection point of the throttling device and the first electromagnetic valve, the other end of the second electromagnetic valve being connected to the other end of the hot gas bypass pipe.

8. The air conditioner of claim 7, further comprising a compressor and a four-way valve, wherein, the four-way valve is respectively connected to a gas outlet of the compressor, an exhaust port of the compressor, the indoor heat exchanger and the outdoor heat exchanger; and the throttling device is an electronic expansion valve.

9. An operation control device, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to implement the operation control method according to any one of claims 1 to 6.

10. An air conditioner, comprising the operation control device according to claim 9.

11. A computer-readable storage medium storing computer-executable instructions for causing a computer to perform the operation control method according to any one of claims 1 to 6.

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