Control method and device of air conditioner, air conditioner and storage medium

Abstract

The application provides a control method and device of an air conditioner, the air conditioner and a storage medium, the air conditioner comprising a four-way valve, a compressor, an outdoor heat exchanger, an indoor heat exchanger and a reversing assembly, the compressor comprising a first exhaust port and a second exhaust port, the first exhaust port being communicated with the four-way valve, the outdoor heat exchanger comprising a first end communicated with the four-way valve and a second end communicated with the indoor heat exchanger, the indoor heat exchanger comprising a third end communicated with the four-way valve, the reversing assembly comprising a first branch connected between the second exhaust port and the first end, a second branch connected between the second exhaust port and the second end, and a third branch connected between the second exhaust port and the third end, the control method comprising: acquiring a current operation mode and an operation frequency of the air conditioner; and controlling the reversing assembly according to the operation mode and the operation frequency, so that the refrigerant flow direction of the second exhaust port corresponds to the branch. The application can improve the working performance of the air conditioning equipment and improve the use comfort of the user.

Description

Technical Field

[0001] This invention relates to the field of air conditioning system technology, and in particular to a control method, device, air conditioner, and storage medium for an air conditioner. Background Technology

[0002] Currently, people have high requirements for the cooling / heating capacity and noise control of air conditioning equipment, and are constantly pursuing higher performance and greater comfort. However, air conditioning equipment in related technologies struggles to balance cooling / heating capacity with quiet operation, resulting in shortcomings in both performance and comfort, and failing to meet diverse user needs. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a control method, apparatus, air conditioner, and storage medium for an air conditioner, which can improve the working performance of air conditioning equipment and enhance user comfort.

[0004] In a first aspect, embodiments of the present invention provide a control method for an air conditioner, the air conditioner comprising: a four-way valve, a compressor, an outdoor heat exchanger, an indoor heat exchanger, and a reversing assembly, wherein the compressor includes a first exhaust port and a second exhaust port, the first exhaust port being connected to the four-way valve, the outdoor heat exchanger including a first end connected to the four-way valve and a second end connected to the indoor heat exchanger, the indoor heat exchanger including a third end connected to the four-way valve, and the reversing assembly including a first branch connecting the second exhaust port and the first end, a second branch connecting the second exhaust port and the second end, and a third branch connecting the second exhaust port and the third end;

[0005] The control method includes:

[0006] Obtain the current operating mode and operating frequency of the air conditioner;

[0007] The reversing assembly is controlled according to the operating mode and the operating frequency to direct the refrigerant from the second exhaust port to the corresponding branch.

[0008] The control method provided by the embodiments of the present invention has at least the following beneficial effects: By controlling the reversing assembly according to the current operating mode of the air conditioner, the refrigerant from the second exhaust port flows to different branches, providing more refrigerant to the outdoor or indoor heat exchanger, improving heat exchange efficiency, and enhancing cooling / heating performance. In low-temperature heating mode, high-temperature refrigerant can be transferred to the outdoor heat exchanger for defrosting through the second exhaust port and the second branch, eliminating the need to switch the four-way valve, avoiding impact on indoor temperature, and achieving defrosting without stopping the unit. Furthermore, by controlling the on / off state of the second exhaust port according to the operating frequency, the compressor can switch between single and dual exhaust, achieving high energy efficiency at high frequencies and low noise at low frequencies. Therefore, adjusting the refrigerant flow direction at the second exhaust port through the reversing assembly can improve the air conditioner's operating performance and enhance user comfort.

[0009] In the above control method, controlling the reversing valve assembly according to the operating mode and the operating frequency includes:

[0010] When the operating mode is heating and defrosting mode, the second branch is turned on, and the first branch and the third branch are turned off.

[0011] In heating and defrosting mode, when the second branch is activated, some of the high-temperature gaseous refrigerant in the compressor is directly delivered to the outdoor heat exchanger through the second exhaust port and the second branch. This allows the outdoor heat exchanger to defrost using the high-temperature gaseous refrigerant, while the other part of the high-temperature gaseous refrigerant flows into the indoor heat exchanger through the first exhaust port for heating. Therefore, it is possible to achieve simultaneous indoor heating and outdoor defrosting, avoiding a drop in indoor temperature and affecting the user experience.

[0012] In the above control method, controlling the reversing valve assembly according to the operating mode and the operating frequency includes:

[0013] When the operating mode is cooling mode or heating mode, and the operating frequency is less than or equal to a preset frequency threshold, the first branch, the second branch, and the third branch are controlled to be cut off.

[0014] When defrosting is not required, the refrigerant does not need to flow into different heat exchangers simultaneously. Therefore, in order to reduce the noise generated by the gaseous refrigerant discharged from the secondary bearing impacting the exhaust valve plate under low-frequency operation, the first, second, and third branches are cut off, so that the refrigerant cannot pass through the second exhaust port, thereby reducing noise.

[0015] In the above control method, controlling the reversing valve assembly according to the operating mode and the operating frequency includes:

[0016] When the operating mode is cooling mode and the operating frequency is greater than a preset frequency threshold, the first branch is controlled to be turned on, and the second branch and the third branch are controlled to be cut off.

[0017] When the compressor is running in cooling mode at high frequency, the first branch is controlled to open, so that the refrigerant in the compressor can flow into the outdoor heat exchanger not only through the first exhaust port and the four-way valve, but also through the second exhaust port and the first branch, thereby increasing the amount of refrigerant flowing into the outdoor heat exchanger per unit time and improving the cooling performance of the air conditioner.

[0018] In the above control method, controlling the reversing valve assembly according to the operating mode and the operating frequency includes:

[0019] When the operating mode is heating mode and the operating frequency is greater than a preset frequency threshold, the third branch is controlled to be turned on, and the first branch and the second branch are controlled to be cut off.

[0020] When the compressor is running in heating mode at high frequency, the third branch is controlled to open, so that the refrigerant in the compressor can flow into the indoor heat exchanger not only through the first exhaust port and the four-way valve, but also through the second exhaust port and the third branch, thereby increasing the amount of refrigerant flowing into the indoor heat exchanger per unit time and improving the heating performance of the air conditioner.

[0021] In the above control method, the reversing assembly includes a first control valve, a second control valve, a third control valve, a first pipe connected between the second exhaust port and the first control valve, a second pipe connected between the first control valve and the second control valve, a third pipe connected between the second valve port of the second control valve and the first end, a fourth pipe connected between the third valve port of the second control valve and the third control valve, a fifth pipe connected between the third valve port of the third control valve and the second end, and a sixth pipe connected between the fourth valve port of the third control valve and the third end.

[0022] The control of the reversing valve assembly according to the operating mode and the operating frequency includes:

[0023] The first control valve is controlled according to the operating mode and the operating frequency; the second control valve and the third control valve are controlled according to the operating mode.

[0024] By comprehensively controlling the first control valve through the operating mode and operating frequency, and controlling the second and third control valves through the operating mode, the refrigerant flows into the outdoor heat exchanger and / or indoor heat exchanger according to the actual usage. This can reduce the noise generated by the compressor when operating at low and medium frequencies, improve the cooling and heating performance, and also realize the heating defrosting mode without stopping the machine. This diversifies the functions of the air conditioner, improves the working performance of the air conditioner, and enhances the user experience.

[0025] In the above control method, controlling the first control valve according to the operating mode and the operating frequency; and controlling the second control valve and the third control valve according to the operating mode, includes:

[0026] When the operating mode is heating and defrosting mode, the first control valve, the second valve port and the third valve port are opened, and the first valve port and the fourth valve port are closed.

[0027] When the air conditioner is running in heating and defrosting mode, the opening of the first control valve, the second valve port, and the third valve port allows the high-temperature gaseous refrigerant to flow into the outdoor heat exchanger through the second exhaust port or into the indoor heat exchanger through the first exhaust port, thus achieving heating and defrosting function without stopping the machine and meeting the user's needs.

[0028] In the above control method, controlling the first control valve according to the operating mode and the operating frequency; and controlling the second control valve and the third control valve according to the operating mode, includes:

[0029] When the operating mode is cooling mode or heating mode, and the operating frequency is less than or equal to a preset frequency threshold, the first control valve is controlled to close.

[0030] When the operating mode is cooling or heating and the compressor operating frequency is lower than or equal to the preset frequency threshold, closing the first control valve can reduce the noise generated by the compressor during low-frequency operation, while improving the energy efficiency ratio of the compressor during low-frequency operation, thus improving the performance of the air conditioner and enhancing user comfort.

[0031] In the above control method, controlling the first control valve according to the operating mode and the operating frequency; and controlling the second control valve and the third control valve according to the operating mode, includes:

[0032] When the operating mode is cooling mode and the operating frequency is greater than a preset frequency threshold, the first control valve and the first valve port are opened, and the second valve port is closed.

[0033] When the compressor is operating at ultra-high frequency, by controlling the opening of the first valve port of the first control valve and the second control valve, the refrigerant flows from the first end into the outdoor heat exchanger through the first control valve and the first valve port, that is, through the first branch into the outdoor heat exchanger, increasing the amount of refrigerant flowing into the outdoor heat exchanger per unit time, improving cooling performance, and enhancing the user experience.

[0034] In the above control method, controlling the first control valve according to the operating mode and the operating frequency; and controlling the second control valve and the third control valve according to the operating mode, includes:

[0035] When the operating mode is heating mode and the operating frequency is greater than a preset frequency threshold, the first control valve, the second valve port and the fourth valve port are controlled to open, and the first valve port and the third valve port are controlled to close.

[0036] When the compressor operates in heating mode at a frequency higher than the preset frequency threshold, it can control the opening of the first control valve, the second valve port of the second control valve, and the fourth valve port of the third control valve, thereby opening the second branch circuit, increasing the amount of refrigerant flowing into the indoor heat exchanger per unit time, improving the heat exchange efficiency of the indoor heat exchanger, increasing the heating capacity of the air conditioner, and meeting the user's needs.

[0037] In a second aspect, embodiments of the present invention provide an operation control device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the control method described in the first aspect embodiment above.

[0038] The operation control device provided according to embodiments of the present invention has at least the following beneficial effects: It controls the reversing assembly according to the current operating mode of the air conditioner, causing the refrigerant at the second exhaust port to flow to different branches, providing more refrigerant to the outdoor or indoor heat exchanger, improving heat exchange efficiency, and enhancing cooling / heating performance. In low-temperature heating mode, high-temperature refrigerant can be transferred to the outdoor heat exchanger for defrosting through the second exhaust port and the second branch, eliminating the need to switch the four-way valve, avoiding impact on indoor temperature, and achieving defrosting without stopping the machine. Furthermore, by controlling the on / off state of the second exhaust port according to the operating frequency, it achieves switching control between single and dual exhaust of the compressor, enabling high energy efficiency during high-frequency operation and low noise during low-frequency operation. Therefore, adjusting the refrigerant flow direction at the second exhaust port through the reversing assembly can improve the operating performance of the air conditioner and enhance user comfort.

[0039] Thirdly, embodiments of the present invention provide an air conditioner, including the operation control device described in the second aspect of the embodiments above.

[0040] The air conditioner provided according to embodiments of the present invention has at least the following beneficial effects: The air conditioner controls the reversing assembly according to the current operating mode, causing the refrigerant at the second exhaust port to flow to different branches, providing more refrigerant to the outdoor or indoor heat exchanger, improving heat exchange efficiency, and enhancing cooling / heating performance. In low-temperature heating mode, high-temperature refrigerant can be transferred to the outdoor heat exchanger for defrosting through the second exhaust port and the second branch, eliminating the need to switch the four-way valve, avoiding impact on indoor temperature, and achieving defrosting without stopping the machine. Furthermore, by controlling the on / off state of the second exhaust port according to the operating frequency, the compressor can switch between single and dual exhaust, achieving high energy efficiency at high frequencies and low noise at low frequencies. Therefore, adjusting the refrigerant flow direction at the second exhaust port through the reversing assembly can improve cooling / heating performance, reduce noise, and enhance user comfort.

[0041] Fourthly, embodiments of the present invention provide a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the control method described in the first aspect of the embodiments above.

[0042] The computer-readable storage medium provided according to embodiments of the present invention has at least the following beneficial effects: It controls the reversing assembly according to the current operating mode, causing the refrigerant at the second exhaust port to flow to different branches, providing more refrigerant to the outdoor or indoor heat exchanger, improving heat exchange efficiency, and enhancing cooling / heating performance. In low-temperature heating mode, high-temperature refrigerant can be transferred to the outdoor heat exchanger for defrosting through the second exhaust port and the second branch, eliminating the need to switch the four-way valve, avoiding impact on indoor temperature, and achieving defrosting without stopping the machine. Furthermore, by controlling the on / off state of the second exhaust port according to the operating frequency, it achieves the switching control effect of single and dual exhaust of the compressor, enabling high energy efficiency at high frequencies and low noise at low frequencies. Therefore, adjusting the refrigerant flow direction at the second exhaust port through the reversing assembly can improve cooling / heating performance, reduce noise, and enhance user comfort.

[0043] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0044] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0045] Figure 1 This is a schematic diagram of the structure of an air conditioner for performing a control method according to an embodiment of the present invention;

[0046] Figure 2This is a schematic diagram of the structure of an air conditioner for performing a control method according to another embodiment of the present invention;

[0047] Figure 3 This is a flowchart of the air conditioner control method provided in an embodiment of the present invention;

[0048] Figure 4 yes Figure 2 The detailed flowchart of step S200;

[0049] Figure 5 yes Figure 2 The detailed flowchart of step S200;

[0050] Figure 6 yes Figure 2 The detailed flowchart of step S200;

[0051] Figure 7 yes Figure 2 The detailed flowchart of step S200;

[0052] Figure 8 yes Figure 2 The detailed flowchart of step S200;

[0053] Figure 9 yes Figure 8 The detailed flowchart of step S300;

[0054] Figure 10 yes Figure 8 The detailed flowchart of step S300;

[0055] Figure 11 yes Figure 8 The detailed flowchart of step S300;

[0056] Figure 12 yes Figure 8 The detailed flowchart of step S300;

[0057] Figure 13 This is a schematic diagram of the operation control device provided in an embodiment of the present invention. Detailed Implementation

[0058] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention 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 overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0059] It should be understood that in the description of the embodiments of the present invention, the use of terms such as "first" and "second" is 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 technical features indicated, or implicitly indicating the order of the technical features indicated. "At least one" means one or more, and "more than one" means two or more. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or multiple items.

[0060] Furthermore, unless otherwise explicitly specified and limited, the term "connection / linkage" should be interpreted broadly, for example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection or a connection that can communicate with each other; it can be a direct connection or an indirect connection through an intermediate medium.

[0061] In the description of the embodiments of the present invention, the terms "one embodiment / implementation," "another embodiment / implementation," or "some embodiments / implementations," "in the above embodiments / implementations," etc., refer to specific features, structures, materials, or characteristics described in conjunction with embodiments or examples that are included in at least two embodiments or implementations of this disclosure. In this disclosure, the illustrative expressions of the above terms do not necessarily refer to the same illustrative embodiment or implementation. It should be noted that although a logical order is shown in the flowcharts, in some cases, the steps shown or described may be performed in a different order than that shown in the flowcharts.

[0062] It should be noted that the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0063] This invention provides a control method, device, air conditioner, and computer-readable storage medium for an air conditioner. By controlling the operating frequency and operating mode of the air conditioner, the commutation component is controlled so that the refrigerant in the compressor can flow into the indoor heat exchanger or the outdoor heat exchanger through the corresponding branch, thereby improving the cooling / heating performance. At the same time, it realizes the function of defrosting without stopping the machine, reduces low-frequency operating noise, and improves the user experience.

[0064] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0065] Firstly, reference Figure 1 , Figure 1 This is a schematic diagram of the structure of an air conditioner 100 for performing a control method according to an embodiment of the present invention.

[0066] It is understood that the air conditioner 100 includes a compressor 110, a four-way valve 120, an indoor heat exchanger 130, an outdoor heat exchanger 140, and an electronic expansion valve 150. The compressor 110 includes a first exhaust port 111, a second exhaust port 112, and an intake port 113. The first exhaust port 111, the intake port 113, the first end 141 of the outdoor heat exchanger 140, and the third end 131 of the indoor heat exchanger 130 are respectively connected to the four-way valve 120. The second end 142 of the outdoor heat exchanger 140 is connected to the fourth end of the indoor heat exchanger 130 through the electronic expansion valve 150. Additionally, the air conditioner 100 also includes a reversing assembly 160 connected to the second exhaust port 112, and the reversing assembly 160 includes a first branch 161, a second branch 162, and a third branch 163. The second exhaust port 112 can be connected to the first end 141 of the outdoor heat exchanger 140 via the first branch 161, the second exhaust port 112 can also be connected to the second end 142 of the outdoor heat exchanger 140 via the second branch 162, and the second exhaust port 112 can also be connected to the third end 131 of the indoor heat exchanger 130 via the third branch 163. Therefore, the on / off state of each branch in the reversing assembly 160 can be controlled to deliver the high-temperature gaseous refrigerant discharged from the second exhaust port 112 to the indoor heat exchanger 130 or the outdoor heat exchanger 140. Alternatively, the reversing assembly 160 can be controlled to close, preventing the gaseous refrigerant of the compressor 110 from flowing out through the second exhaust port 112 on the auxiliary bearing, thus preventing the gaseous refrigerant from impacting the exhaust valve plate and reducing operating noise.

[0067] refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of an air conditioner 100 for performing a control method according to another embodiment of the present invention.

[0068] The reversing assembly 160 includes a first control valve 170, a second control valve 180, a third control valve 190, a first pipe, a second pipe, a third pipe, a fourth pipe, a fifth pipe, and a sixth pipe. The second exhaust port 112 is connected to the inlet of the first control valve 170 via the first pipe, and the outlet of the first control valve 170 is connected to the inlet of the second control valve 180 via the second pipe. The first valve port 181 of the second control valve 180 is connected to the first end 141 of the outdoor heat exchanger 140 via the third pipe. Therefore, the first pipe, the second pipe, the third pipe, the first control valve 170 connected between the first and second pipes, and the second control valve 180 connected between the second and third pipes form a first branch 161. When the first control valve 170 and the first valve port 181 are open, i.e., the first branch 161 is open, the refrigerant from the second exhaust port 112 can flow sequentially through the first pipe, the second pipe, and the third pipe from the first end 141 into the outdoor heat exchanger 140.

[0069] The second valve port 182 of the second control valve 180 is connected to the inlet end of the third control valve 190 via a fourth pipe, while the third valve port 191 of the third control valve 190 is connected to the second end 142 of the outdoor heat exchanger 140 via a fifth pipe, and the fourth valve port 192 of the third control valve 190 is connected to the third end 131 of the indoor heat exchanger 130 via a sixth pipe. The first pipe, second pipe, fourth pipe, fifth pipe, the first control valve 170 connecting the first pipe and the second pipe, the second control valve 180 connecting the second pipe and the fourth pipe, and the third control valve 190 connecting the fourth pipe and the fifth pipe form a second branch 162, while the first pipe, second pipe, fourth pipe, sixth pipe, the first control valve 170 connecting the first pipe and the second pipe, the second control valve 180 connecting the second pipe and the fourth pipe, and the third control valve 190 connecting the fourth pipe and the sixth pipe form a third branch 163. When the first control valve 170, the second valve port 182, and the third valve port 191 are open, i.e., the second branch 162 is connected, the refrigerant from the second exhaust port 112 can flow into the outdoor heat exchanger 140 from the second end 142 through the first pipe, the second pipe, the fourth pipe, and the fifth pipe in sequence. When the first control valve 170, the second valve port 182, and the fourth valve port 192 are open, i.e., the third branch 163 is connected, the refrigerant from the second exhaust port 112 can flow into the indoor heat exchanger 130 from the third end 131 through the first pipe, the second pipe, the fourth pipe, and the sixth pipe in sequence.

[0070] The air conditioner 100 described in this embodiment of the invention is for the purpose of more clearly illustrating the technical solutions of this embodiment of the invention, and does not constitute a limitation on the technical solutions provided by this embodiment of the invention. As those skilled in the art will know, with the evolution of the air conditioner 100 and the emergence of new application scenarios, the technical solutions provided by this embodiment of the invention are also applicable to similar technical problems.

[0071] It will be understood by those skilled in the art that Figure 1 and Figure 2 The structure of the air conditioner 100 shown does not constitute a limitation on the embodiments of the present invention. It may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0072] Based on the structure of the air conditioner 100 described above, various embodiments of the air conditioner control method of the present invention are proposed.

[0073] Reference Figure 3 , Figure 3 This is a flowchart of an air conditioner control method provided in an embodiment of the present invention. This air conditioner control method can be applied to, for example... Figure 1 Or such as Figure 2The air conditioner 100 shown is controlled by a method including, but not limited to, the following steps:

[0074] Step S100: Obtain the current operating mode and operating frequency of the air conditioner;

[0075] Step S200: Control the reversing component according to the operating mode and operating frequency so that the refrigerant at the second exhaust port flows to the corresponding branch.

[0076] It is understandable that the refrigerant flows in different directions depending on the operating mode of the air conditioner. In cooling mode, the high-temperature gaseous refrigerant in the compressor passes sequentially through the four-way valve, the outdoor heat exchanger, the electronic expansion valve, and the indoor heat exchanger. After heat exchange in the indoor heat exchanger, the refrigerant returns to the compressor through the four-way valve for pressurization.

[0077] In heating mode, the high-temperature gaseous refrigerant in the compressor passes through the four-way valve and enters the indoor heat exchanger to release heat and liquefy. The low-temperature liquid refrigerant passes through the electronic expansion valve and enters the outdoor heat exchanger to absorb heat and evaporate. The high-temperature gaseous refrigerant then flows back into the compressor through the four-way valve.

[0078] By controlling the on / off state of each branch of the reversing assembly, the flow direction of refrigerant from the second discharge port of the compressor can be controlled. For example, the refrigerant discharged from the second discharge port can be controlled to flow directly to the outdoor heat exchanger, or it can be controlled to flow directly to the indoor heat exchanger, or it can be controlled to flow to both the indoor and outdoor heat exchangers simultaneously. In addition, each branch in the reversing assembly can be cut off, so that the refrigerant in the compressor cannot be discharged through the second discharge port, thereby achieving the purpose of closing the second discharge port.

[0079] As consumers increasingly prioritize air conditioning comfort, single-exhaust compressors, operating at ultra-high frequencies, suffer from limited exhaust port flow area, delayed valve closure, and low exhaust volume per unit time, resulting in low compressor efficiency. Therefore, compressors in related equipment often employ a dual-exhaust structure (top and bottom exhaust) to increase exhaust volume at ultra-high frequencies. However, this dual-exhaust design increases compressor noise during commonly used low- and mid-frequency operation, hindering quiet operation and significantly impacting user experience. Furthermore, the increased clearance volume due to the dual-exhaust design further reduces compressor efficiency, affecting overall air conditioner performance.

[0080] Therefore, by controlling the on / off state of each branch of the commutation assembly, it is possible to control whether the refrigerant in the compressor can flow to the outdoor heat exchanger and / or indoor heat exchanger through the second exhaust port, i.e., to control whether the second exhaust port is closed. When each branch of the commutation assembly is cut off, the refrigerant in the compressor cannot flow out through the second exhaust port, thus preventing the gaseous refrigerant from impacting the exhaust valve plate from the second exhaust port on the auxiliary bearing, reducing noise. Therefore, when the compressor is operating at high frequency, the on / off state of each branch of the commutation assembly can be controlled to open the second exhaust port, improving the cooling / heating performance of the air conditioner; when the compressor is operating at medium to low frequency, the second exhaust port can be closed to reduce noise and improve the user experience. In addition, by controlling the on / off status of each branch of the reversing assembly, the high-temperature gaseous refrigerant in the compressor can be preferentially delivered to the outdoor heat exchanger or the indoor heat exchanger to improve the cooling or heating capacity. Alternatively, the high-temperature gaseous refrigerant in the compressor can be delivered to both the outdoor and indoor heat exchangers simultaneously, thereby enabling defrosting of the outdoor heat exchanger while heating the indoor environment. This can be achieved without changing the refrigerant flow direction, thus achieving defrosting without stopping the machine and improving user comfort.

[0081] Reference Figure 4 , Figure 4 yes Figure 2 The detailed flowchart of step S200 is in Figure 4 In the example, step S200 includes, but is not limited to, the following steps:

[0082] Step S210: When the operating mode is heating and defrosting mode, control the second branch to be turned on and control the first and third branches to be turned off.

[0083] Understandably, when the outdoor ambient temperature is low, if the air conditioner is running in heating mode, the high-temperature gaseous refrigerant in the compressor flows into the indoor heat exchanger through the four-way valve. After heat exchange in the indoor heat exchanger, it flows into the outdoor heat exchanger. The low-temperature refrigerant absorbs heat and evaporates in the outdoor heat exchanger, which can easily lead to frost formation on its surface. Related technologies use a reverse refrigerant circulation method, i.e., running in cooling mode. This allows the high-temperature gaseous refrigerant to preferentially pass through the outdoor heat exchanger, raising its temperature and melting the frost layer, thus achieving a defrosting effect. However, because the air conditioner is running in cooling mode, the indoor temperature drops, severely impacting user comfort.

[0084] By configuring a reversing assembly, the second exhaust port can be connected to the second end of the outdoor heat exchanger via a second branch. Therefore, when the air conditioner is operating in heating / defrosting mode, the second branch of the reversing assembly is open, cutting off the first and third branches. This allows the high-temperature gaseous refrigerant inside the compressor to be discharged through the second exhaust port. The refrigerant discharged from the second exhaust port can only flow into the outdoor heat exchanger through the second branch, raising its temperature and melting the frost layer. Simultaneously, the remaining high-temperature gaseous refrigerant inside the compressor flows into the indoor heat exchanger through the first exhaust port and the four-way valve for heat exchange, heating the indoor environment. Thus, simultaneous heating and defrosting are achieved without changing the refrigerant circulation direction, stopping the indoor heat exchanger's heating function, or affecting the indoor temperature, thereby improving the user experience.

[0085] Reference Figure 5 , Figure 5 yes Figure 2 The detailed flowchart of step S200 is in Figure 5 In the example, step S200 includes, but is not limited to, the following steps:

[0086] Step S220: When the operating mode is cooling mode or heating mode, and the operating frequency is less than or equal to the preset frequency threshold, control the first branch, the second branch and the third branch to be cut off.

[0087] Understandably, when the air conditioner is not operating in heating / defrosting mode, the high-temperature gaseous refrigerant in the compressor does not need to be simultaneously delivered to both the outdoor and indoor heat exchangers through the reversing assembly's branch circuit. Furthermore, a low operating frequency indicates that the air conditioner's current cooling or heating capacity requirement is moderate, meaning the refrigerant circulation volume required per unit time is appropriate. Therefore, there is no need to open the second exhaust port to increase the refrigerant circulation volume per unit time.

[0088] Therefore, when the operating mode is cooling or heating, and the compressor's operating frequency is lower than or equal to the preset frequency threshold, it indicates that the compressor only needs to deliver refrigerant to the outdoor or indoor heat exchanger, and the amount of refrigerant required per unit time is moderate. Controlling the first, second, and third branches prevents the refrigerant inside the compressor from being discharged through the second exhaust port, thus avoiding noise caused by gaseous refrigerant impacting the exhaust valve plate from the second exhaust port on the auxiliary bearing. This reduces the noise generated by the compressor operating at low to medium frequencies in cooling or heating mode. Furthermore, because the second exhaust port is closed, the clearance volume of the compressor pump body is reduced, increasing the compressor's energy efficiency ratio, thereby improving the air conditioner's performance. This enhances the cooling and heating capacity of air conditioners using compressors with top and bottom exhaust structures during low to medium frequency operation, improving user comfort.

[0089] Reference Figure 6 , Figure 6 yes Figure 2 The detailed flowchart of step S200 is in Figure 6 In the example, step S200 includes, but is not limited to, the following steps:

[0090] Step S230: When the operating mode is cooling mode and the operating frequency is greater than the preset frequency threshold, control the first branch to be turned on and control the second and third branches to be turned off.

[0091] Understandably, when an air conditioner is operating in cooling mode and the compressor's operating frequency is higher than a preset frequency threshold, it indicates that the air conditioner currently requires a larger cooling capacity. Therefore, it's necessary to increase the amount of refrigerant circulating per unit time to improve the cooling capacity and meet user needs. The first branch of the reversing assembly is connected to both the second exhaust port and the first end of the outdoor heat exchanger. With the first branch open and the second and third branches closed, refrigerant in the compressor can flow into the outdoor heat exchanger through the first exhaust port and the four-way valve, or it can flow into the outdoor heat exchanger through the second exhaust port, specifically into the first branch. This increases the amount of refrigerant flowing into the outdoor heat exchanger per unit time, improving its heat exchange efficiency, increasing the cooling capacity per unit time, enhancing the air conditioner's cooling performance, and improving the user experience.

[0092] Reference Figure 7 , Figure 7 yes Figure 2 The detailed flowchart of step S200 is in Figure 7 In the example, step S200 includes, but is not limited to, the following steps:

[0093] Step S240: When the operating mode is heating mode and the operating frequency is greater than the preset frequency threshold, control the third branch to be turned on and control the first and second branches to be cut off.

[0094] Understandably, when an air conditioner is operating in heating mode and the compressor's operating frequency is higher than a preset frequency threshold, it indicates that the air conditioner requires a higher heating capacity. To increase the heating capacity per unit time, the amount of refrigerant circulating within the air conditioner per unit time needs to be increased. Specifically, the third branch in the reversing assembly is connected to both the compressor's second discharge port and the third end of the indoor heat exchanger. This allows the refrigerant inside the compressor to be discharged through the second discharge port and flow into the indoor heat exchanger through the third branch, increasing the amount of refrigerant flowing into the indoor heat exchanger, improving its heat exchange efficiency, and thus increasing its heating capacity to meet the user's needs.

[0095] Therefore, when the air conditioner is operating in heating mode and the operating frequency is greater than the preset frequency threshold, the third branch is controlled to be turned on, while the first and second branches are cut off. This allows the refrigerant in the compressor to flow to the indoor heat exchanger through the first exhaust port and the four-way valve, and also to flow into the indoor heat exchanger through the second exhaust port and the third branch. However, it cannot flow into the outdoor heat exchanger through the first and second branches. This increases the amount of refrigerant circulating in the air conditioner per unit time, increases the amount of refrigerant flowing into the indoor heat exchanger per unit time, improves the heating performance of the air conditioner, and enhances the user experience.

[0096] It should be noted that during the heating mode operation, the air conditioner can acquire the outdoor coil temperature and the outdoor temperature of the environment where the outdoor heat exchanger is located, and determine whether the temperature difference between the outdoor coil temperature and the outdoor temperature meets the defrosting conditions. If the temperature difference meets the defrosting conditions, it is assumed that frost has condensed on the surface of the outdoor heat exchanger and defrosting is required. In this case, the air conditioner will automatically enter the heating defrosting mode, control the second branch to be turned on, and control the first and third branches to be turned off.

[0097] Reference Figure 8 , Figure 8 yes Figure 2 The detailed flowchart of step S200 is in Figure 8 In the example, step S200 includes, but is not limited to, the following steps:

[0098] Step S300: Control the first control valve according to the operating mode and operating frequency; control the second and third control valves according to the operating mode.

[0099] Reference Figure 2 It is understandable that after the first control valve is closed, the refrigerant in the compressor cannot flow into the indoor or outdoor heat exchanger through the second exhaust port. The refrigerant in the compressor can only flow into the indoor or outdoor heat exchanger through the first exhaust port. Therefore, when the compressor is operating at a low to medium frequency, that is, when the operating frequency is lower than or equal to the preset frequency threshold, the first control valve is closed so that the gaseous refrigerant cannot be discharged through the second exhaust port and impact the exhaust valve plate, thereby reducing the noise of the compressor when it is operating at a low to medium frequency.

[0100] After the first control valve opens, refrigerant flows through it into the second control valve. The first port of the second control valve is connected to the first end of the outdoor heat exchanger, while the second port is connected to the third control valve. When the first port is open, refrigerant can flow through the second vent, the first control valve, and the first port into the outdoor heat exchanger from the first end, i.e., the first branch is open. When the second port is open, refrigerant can flow into the third control valve, and depending on the opening and closing status of each port of the third control valve, it flows into either the outdoor or indoor heat exchanger. Therefore, the second control valve can control whether refrigerant flows into the outdoor heat exchanger from the first end, while the third control valve can control whether refrigerant flows into the outdoor heat exchanger from the second end or into the indoor heat exchanger from the third end. Thus, the first, second, and third control valves can be controlled to replenish refrigerant to the indoor and / or outdoor heat exchangers under different operating modes of the air conditioner. For example, the high-temperature refrigerant in the compressor can be controlled to flow into both the outdoor and indoor heat exchangers simultaneously, realizing a heating defrosting mode where the air conditioner defrosts without stopping the machine. Alternatively, in cooling or heating mode, the refrigerant can be controlled to flow directly into the outdoor or indoor heat exchanger through a branch line, increasing the amount of refrigerant flowing into the heat exchanger per unit time, improving heat exchange efficiency, and enhancing the cooling or heating capacity of the air conditioner.

[0101] Therefore, by comprehensively controlling the first control valve through the operating mode and operating frequency, and controlling the second and third control valves through the operating mode, the refrigerant flows into the outdoor heat exchanger and / or indoor heat exchanger according to the actual usage. This can reduce the noise generated by the compressor when it is running at low and medium frequencies, improve the cooling and heating performance, and also realize the heating defrosting mode without stopping the machine. This diversifies the functions of the air conditioner, improves the working performance of the air conditioner, and enhances the user experience.

[0102] Reference Figure 9 , Figure 9 yes Figure 8 The detailed flowchart of step S300 is in Figure 9 In the example, step S300 includes, but is not limited to, the following steps:

[0103] Step S310: When the operating mode is heating and defrosting mode, control the first control valve, the second valve port and the third valve port to open, and control the first valve port and the fourth valve port to close.

[0104] Understandably, when the air conditioner is operating in heating / defrosting mode, the first control valve, the second port of the second control valve, and the third port of the third control valve are open, while the first port of the second control valve and the fourth port of the third control valve are closed. This allows the high-temperature gaseous refrigerant from the compressor to flow into the indoor heat exchanger through the first exhaust port and the four-way valve for heating, while simultaneously flowing through the second exhaust port, through the first, second, fourth, and fifth pipes, and into the outdoor heat exchanger from the second end. This allows the high-temperature gaseous refrigerant to both heat the indoor heat exchanger and melt the frost layer on its surface. Therefore, the air conditioner does not need to change the refrigerant circulation direction during heating. In cooling mode, all the high-temperature refrigerant in the compressor flows into the outdoor heat exchanger for defrosting, causing a drop in indoor temperature and resulting in significant temperature fluctuations, severely impacting the user experience. In addition, when the air conditioner is running in heating defrosting mode, the first valve port of the second control valve and the fourth valve port of the third control valve are closed, so that the refrigerant cannot flow into the outdoor heat exchanger from the first end through the first valve port, nor can it flow into the indoor heat exchanger from the third end. As a result, the refrigerant discharged from the second exhaust port can only flow into the outdoor heat exchanger from the second end for defrosting, thus improving defrosting efficiency.

[0105] It should be noted that the air conditioner can obtain the temperature of the outdoor coil and the outdoor temperature of the environment where the outdoor heat exchanger is located. Based on the temperature difference between the outdoor coil temperature and the outdoor temperature, it can determine whether the outdoor heat exchanger is frosted, and thus control the air conditioner to operate in heating defrosting mode. This involves opening the first control valve, the second valve port, and the third valve port, while closing the valve ports of the other control valves. In other words, only the second branch is open, while the first and third branches are cut off. This ensures that the refrigerant discharged from the second exhaust port can only flow into the outdoor heat exchanger through the second branch, thereby improving the defrosting rate.

[0106] In addition, the defrosting status of the outdoor heat exchanger can be judged based on the temperature difference between the outdoor coil temperature and the outdoor temperature, as well as the running time of the heating defrosting mode. For example, if the temperature difference between the outdoor coil temperature and the outdoor temperature is small, and the running time of the heating defrosting mode reaches the time threshold, it can be considered that the frost layer on the outdoor heat exchanger has been basically eliminated. In order to ensure the stability of the indoor temperature, the fourth valve can be opened at the same time while the second branch is open, so that the refrigerant discharged from the second exhaust port is split by the third control valve and flows to both the second and third branches. That is, it flows into the outdoor heat exchanger from the second end for defrosting and into the indoor heat exchanger from the third end for heating, thus avoiding indoor temperature fluctuations that affect the user experience.

[0107] Reference Figure 10 , Figure 10 yes Figure 8 The detailed flowchart of step S300 is in Figure 10In the example, step S300 includes, but is not limited to, the following steps:

[0108] Step S320: When the operating mode is cooling mode or heating mode, and the operating frequency is less than or equal to the preset frequency threshold, control the first control valve to close.

[0109] Understandably, when the air conditioner does not need to operate in heating or defrosting mode, the high-temperature gaseous refrigerant in the compressor does not need to be simultaneously delivered to the outdoor and indoor heat exchangers through the branch of the reversing assembly. That is, the refrigerant in the compressor is only discharged through the first exhaust port. The flow direction of the refrigerant is adjusted by the four-way valve to deliver the high-temperature refrigerant to the indoor or outdoor heat exchanger, and the air conditioner can operate in heating or cooling mode.

[0110] The second exhaust port is connected to the second control valve via the first control valve. When the first control valve is open, high-temperature gaseous refrigerant can flow into the second control valve through the second exhaust port and the first control valve, thus allowing the refrigerant to flow into the first branch, the second branch, or the third branch. Additionally, because the high-temperature gaseous refrigerant is discharged through the second exhaust port on the auxiliary bearing, it impacts the exhaust valve plate, generating noise. Simultaneously, the clearance volume of the pump body increases, reducing the compressor's energy efficiency ratio and affecting the air conditioner's performance.

[0111] When the compressor's operating frequency is less than or equal to a preset frequency threshold, the air conditioner's current required cooling or heating capacity is considered to be moderate. There is no need to increase the amount of refrigerant flowing into the heat exchanger per unit time. Therefore, there is no need to open the first control valve, thus reducing noise generation.

[0112] Therefore, when the operating mode is cooling or heating and the compressor operating frequency is lower than or equal to the preset frequency threshold, closing the first control valve can reduce the noise generated by the compressor during low-frequency operation, while improving the energy efficiency ratio of the compressor during low-frequency operation, thus improving the performance of the air conditioner and enhancing user comfort.

[0113] Reference Figure 11 , Figure 11 yes Figure 8 The detailed flowchart of step S300 is in Figure 11 In the example, step S300 includes, but is not limited to, the following steps:

[0114] Step S330: When the operating mode is cooling mode and the operating frequency is greater than the preset frequency threshold, control the first control valve and the first valve port to open, and control the second valve port to close.

[0115] Understandably, when the compressor operates in cooling mode at a frequency higher than the preset threshold, it can be assumed that the air conditioner requires a larger cooling capacity, necessitating an increase in the amount of refrigerant flowing into the outdoor heat exchanger per unit time to improve its heat exchange efficiency. Therefore, when the compressor is operating at ultra-high frequency, the first control valve can be opened, allowing the high-temperature refrigerant inside the compressor to be discharged through the second exhaust port, increasing the discharge volume per unit time. By controlling the opening of the first valve ports of the first and second control valves, refrigerant flows into the outdoor heat exchanger from the first end through the first control valve and the first valve port, i.e., through the first branch formed by the first, second, and third pipes, increasing the amount of refrigerant flowing into the outdoor heat exchanger per unit time, improving cooling performance, and enhancing the user experience.

[0116] Reference Figure 12 , Figure 12 yes Figure 8 The detailed flowchart of step S300 is in Figure 12 In the example, step S300 includes, but is not limited to, the following steps:

[0117] Step S340: When the operating mode is heating mode and the operating frequency is greater than the preset frequency threshold, control the first control valve, the second valve port and the fourth valve port to open, and control the first valve port and the third valve port to close.

[0118] It is understandable that when the compressor operates in heating mode at a frequency higher than the preset frequency threshold, it can be assumed that the air conditioner requires a higher heating capacity, necessitating an increase in the amount of refrigerant flowing into the indoor heat exchanger per unit time. The compressor's second discharge port is connected to the third end of the indoor heat exchanger via a second branch, specifically through pipes one, two, four, and six. Therefore, by opening the first control valve, the second valve port of the second control valve, and the fourth valve port of the third control valve, the second branch is opened, while simultaneously closing the first valve port of the second control valve and the third valve port of the third control valve. This ensures that the refrigerant discharged from the second discharge port can only flow into the indoor heat exchanger through the second branch, increasing the amount of refrigerant flowing into the indoor heat exchanger per unit time, improving the heat exchange efficiency of the indoor heat exchanger, increasing the air conditioner's heating capacity, and meeting the user's needs.

[0119] refer to Figure 13 , Figure 13 The present invention provides a schematic diagram of the structure of the operation control device 1300 according to a second aspect embodiment of the present invention. The operation control device 1300 includes: a memory 1310, a processor 1320, and a computer program stored in the memory 1310 and executable on the processor 1320. When the processor 1320 executes the computer program, it implements the control method of the air conditioner as described in the above embodiment.

[0120] The memory 1310, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs, such as the air conditioner control method in the above embodiments of the present invention. The processor 1320 implements the air conditioner control method in the above embodiments of the present invention by running the non-transitory software program and instructions stored in the memory 1310.

[0121] The memory 1310 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 required for executing the control method of the air conditioner in the above embodiments. Furthermore, the memory 1310 may include high-speed random access memory 1310, and may also include non-transitory memory 1310, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. It should be noted that the memory 1310 may optionally include memory 1310 remotely located relative to the processor 1320, and these remote memories 1310 can be connected to the terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0122] The non-transient software program and instructions required to implement the air conditioner control method in the above embodiments are stored in memory. When executed by one or more processors, the air conditioner control method in the above embodiments is executed, for example, the method described above is executed. Figure 3 Method steps S100 to S200 Figure 4 Method steps S210, Figure 5 Method steps S220, Figure 6 Method steps S230, Figure 7 Method steps S240, Figure 8 Method steps S300, Figure 9 Method steps S310, Figure 10 Method steps S320, Figure 11 Method steps S330 and Figure 12 Method step S340.

[0123] A third aspect of the present invention provides an air conditioner including an operation control device 1300 as provided in the third aspect embodiment. Therefore, by controlling the reversing assembly according to the current operating mode, the refrigerant from the second exhaust port flows to different branches, providing more refrigerant to the outdoor or indoor heat exchanger, improving heat exchange efficiency, and enhancing cooling / heating performance. In low-temperature heating mode, high-temperature refrigerant can be transferred to the outdoor heat exchanger for defrosting through the second exhaust port and the second branch, eliminating the need to switch the four-way valve, avoiding impact on indoor temperature, and achieving defrosting without stopping the machine. Furthermore, by controlling the on / off state of the second exhaust port according to the operating frequency, the compressor can switch between single and dual exhaust, achieving high energy efficiency at high frequencies and low noise at low frequencies. Therefore, adjusting the refrigerant flow direction at the second exhaust port through the reversing assembly can improve cooling / heating performance, reduce noise, and enhance user comfort.

[0124] A fourth aspect of the present invention provides a computer-readable storage medium storing computer-executable instructions that can be used to cause a computer to perform the control method of an air conditioner as described in the second aspect of the present invention, for example, to perform the above-described... Figure 3 Method steps S100 to S200 Figure 4 Method steps S210, Figure 5 Method steps S220, Figure 6 Method steps S230, Figure 7 Method steps S240, Figure 8 Method steps S300, Figure 9 Method steps S310, Figure 10 Method steps S320, Figure 11 Method steps S330 and Figure 12 Method step S340.

[0125] 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.

[0126] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention 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 the present invention.

Claims

1. A control method for an air conditioner, characterized in that, The air conditioner includes: a four-way valve, a compressor, an outdoor heat exchanger, an indoor heat exchanger, and a reversing assembly. The compressor includes a first exhaust port and a second exhaust port. The first exhaust port is connected to the four-way valve. The outdoor heat exchanger includes a first end connected to the four-way valve and a second end connected to the indoor heat exchanger. The indoor heat exchanger includes a third end connected to the four-way valve. The reversing assembly includes a first branch connecting the second exhaust port and the first end, a second branch connecting the second exhaust port and the second end, and a third branch connecting the second exhaust port and the third end. The control method includes: Obtain the current operating mode and operating frequency of the air conditioner; The reversing component is controlled according to the operating mode and the operating frequency so that the refrigerant at the second exhaust port flows to the corresponding branch. The reversing assembly includes a first control valve, a second control valve, a third control valve, a first pipe connected between the second exhaust port and the first control valve, a second pipe connected between the first control valve and the second control valve, a third pipe connected between the first valve port of the second control valve and the first end, a fourth pipe connected between the second valve port of the second control valve and the third control valve, a fifth pipe connected between the third valve port of the third control valve and the second end, and a sixth pipe connected between the fourth valve port of the third control valve and the third end. The step of controlling the commutation component according to the operating mode and the operating frequency includes: The first control valve is controlled according to the operating mode and the operating frequency; the second control valve and the third control valve are controlled according to the operating mode.

2. The control method according to claim 1, characterized in that, The step of controlling the commutation component according to the operating mode and the operating frequency includes: When the operating mode is heating and defrosting mode, the second branch is turned on, and the first branch and the third branch are turned off.

3. The control method according to claim 1, characterized in that, The step of controlling the commutation component according to the operating mode and the operating frequency includes: When the operating mode is cooling mode or heating mode, and the operating frequency is less than or equal to a preset frequency threshold, the first branch, the second branch, and the third branch are controlled to be cut off.

4. The control method according to claim 1, characterized in that, The step of controlling the commutation component according to the operating mode and the operating frequency includes: When the operating mode is cooling mode and the operating frequency is greater than a preset frequency threshold, the first branch is controlled to be turned on, and the second branch and the third branch are controlled to be cut off.

5. The control method according to claim 1, characterized in that, The step of controlling the commutation component according to the operating mode and the operating frequency includes: When the operating mode is heating mode and the operating frequency is greater than a preset frequency threshold, the third branch is controlled to be turned on, and the first branch and the second branch are controlled to be cut off.

6. The control method according to claim 1, characterized in that, The step of controlling the first control valve according to the operating mode and the operating frequency, and controlling the second and third control valves according to the operating mode, includes: When the operating mode is heating and defrosting mode, the first control valve, the second valve port and the third valve port are opened, and the first valve port and the fourth valve port are closed.

7. The control method according to claim 1, characterized in that, The step of controlling the first control valve according to the operating mode and the operating frequency, and controlling the second and third control valves according to the operating mode, includes: When the operating mode is cooling mode or heating mode, and the operating frequency is less than or equal to a preset frequency threshold, the first control valve is controlled to close.

8. The control method according to claim 1, characterized in that, The step of controlling the first control valve according to the operating mode and the operating frequency, and controlling the second and third control valves according to the operating mode, includes: When the operating mode is cooling mode and the operating frequency is greater than a preset frequency threshold, the first control valve and the first valve port are opened, and the second valve port is closed.

9. The control method according to claim 1, characterized in that, The step of controlling the first control valve according to the operating mode and the operating frequency, and controlling the second and third control valves according to the operating mode, includes: When the operating mode is heating mode and the operating frequency is greater than a preset frequency threshold, the first control valve, the second valve port and the fourth valve port are controlled to open, and the first valve port and the third valve port are controlled to close.

10. An operation control device, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the control method as described in any one of claims 1 to 9.

11. An air conditioner, characterized in that, Includes the operation control device as described in claim 10.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions for causing a computer to perform the control method as described in any one of claims 1 to 9.

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