Air conditioner, its control method, control device, storage medium, and electronic device

Abstract

The present invention discloses an air conditioner, its control method, control device, storage medium and electronic device. The method includes the following steps: obtaining the operating mode of the air conditioner; if the air conditioner operates in a cooling mode or a dehumidifying mode and lasts for a first preset time, obtaining the operating frequency of the compressor of the air conditioner and obtaining the cumulative operating time of the compressor; determining whether the operating frequency and the cumulative operating time of the compressor meet a preset oil return control condition; if they meet, performing oil return control on the air conditioner. Thus, this method can improve the effectiveness of compressor oil return, reduce the damage of the compressor caused by insufficient lubrication, and thereby extend the service life of the compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular, to a control method for an air conditioner, a computer-readable storage medium, an electronic device, a control device for an air conditioner, and an air conditioner. Background Art

[0002] Currently, for an air conditioner with a quick connection pipe, the quick connector therein has a certain throttling effect. When the air conditioner is operating, a large amount of oil remains in the evaporator and cannot effectively return to the compressor, which may cause insufficient lubrication of the compressor and ultimately lead to compressor damage. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems in the related art to some extent. To this end, the first object of the present invention is to propose a control method for an air conditioner to improve the effectiveness of compressor oil return, reduce the damage caused by insufficient lubrication of the compressor, and thus extend the service life of the compressor.

[0004] The second object of the present invention is to propose a computer-readable storage medium.

[0005] The third object of the present invention is to propose an electronic device.

[0006] The fourth object of the present invention is to propose a control device for an air conditioner.

[0007] The fifth object of the present invention is to propose an air conditioner.

[0008] To achieve the above object, an embodiment of the first aspect of the present invention proposes a control method for an air conditioner. The air conditioner has a quick connector, and the method includes the following steps: obtaining the operating mode of the air conditioner; if the air conditioner is operating in the cooling mode or the dehumidifying mode and continues for a first preset time, obtaining the operating frequency of the compressor of the air conditioner and obtaining the cumulative operating time of the compressor; determining whether the operating frequency and the cumulative operating time of the compressor meet a preset oil return control condition; if they meet, performing oil return control on the air conditioner.

[0009] Further, the preset oil return control condition includes: the operating frequency of the compressor is less than a first preset frequency, and the cumulative operating time is greater than a second preset time; the operating frequency of the compressor is greater than or equal to the first preset frequency, and the cumulative operating time is greater than a third preset time, where the third preset time is greater than the second preset time.

[0010] According to an embodiment of the present invention, the oil return control of the air conditioner includes: if the operating frequency of the compressor is less than the second preset frequency, controlling the operating frequency of the compressor to rise to the second preset frequency; if the operating frequency of the compressor is greater than the second preset frequency, controlling the operating frequency of the compressor to drop to the second preset frequency.

[0011] Further, an electronic expansion valve is connected to the liquid pipeline of the air conditioner. The oil return control of the air conditioner further includes: when the operating frequency of the compressor rises to the second preset frequency, controlling the opening degree of the electronic expansion valve to decrease to full close; when the operating frequency of the compressor drops to the second preset frequency, first controlling the compressor to operate at the second preset frequency for a fourth preset time, and then controlling the opening degree of the electronic expansion valve to decrease to full close.

[0012] Further, the method further includes: when the closing time of the electronic expansion valve is greater than a fifth preset time, ending the oil return control of the air conditioner, controlling the electronic expansion valve to open to the opening degree before the oil return control, and controlling the operating frequency of the compressor to drop or rise to the operating frequency before the oil return control.

[0013] Further, the third preset time is n times the second preset time, where 6 ≤ n ≤ 8; the value of the fourth preset time is 30 - 60 s, and the value of the fifth preset time is 20 - 30 s.

[0014] According to the control method of the air conditioner in the embodiment of the present invention, by actively controlling the oil return according to the operating frequency and cumulative operating time of the compressor, the effectiveness of the compressor oil return can be improved, the damage caused by insufficient lubrication of the compressor can be reduced, and thus the service life of the compressor can be extended.

[0015] To achieve the above object, an embodiment of the second aspect of the present invention proposes a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the control method of the air conditioner is implemented.

[0016] To achieve the above object, an embodiment of the third aspect of the present invention proposes an electronic device, including a memory and a processor. A computer program is stored on the memory. When the computer program is executed by the processor, the control method of the air conditioner is implemented.

[0017] To achieve the above object, an embodiment of the fourth aspect of the present invention provides a control device for an air conditioner, characterized in that the air conditioner has a quick connector, and the device includes: a first acquisition module for acquiring the operating mode of the air conditioner; a second acquisition module for acquiring the operating frequency of the compressor of the air conditioner and the cumulative operating time of the compressor when the air conditioner operates in a cooling mode or a dehumidifying mode and lasts for a first preset time; a judgment module for judging whether the operating frequency and the cumulative operating time of the compressor meet a preset oil return control condition; and a control module for performing oil return control on the air conditioner when the operating frequency and the cumulative operating time of the compressor meet the preset oil return control condition.

[0018] According to the control device for an air conditioner of the embodiment of the present invention, by actively performing oil return control according to the operating frequency and the cumulative operating time of the compressor, the effectiveness of compressor oil return can be improved, damage to the compressor caused by insufficient lubrication can be reduced, and thus the service life of the compressor can be extended.

[0019] To achieve the above object, an embodiment of the fifth aspect of the present invention provides an air conditioner including the above-mentioned electronic device or the control device of the above-mentioned air conditioner.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0021] Figure 1 is a schematic flowchart of a control method for an air conditioner according to an embodiment of the present invention;

[0022] Figure 2 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;

[0023] Figure 3 is a structural block diagram of a control device for an air conditioner according to an embodiment of the present invention. Detailed Embodiments

[0024] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation of the present invention.

[0025] The following refers to the attached Figures 1-3 to describe an air conditioner and its control method, control device, storage medium, and electronic device according to embodiments of the present invention.

[0026] Figure 1It is a schematic flow chart of a control method for an air conditioner according to an embodiment of the present invention.

[0027] In an embodiment of the present invention, the air conditioner 100 is provided with quick connectors. Specifically, referring to Figure 2 , the quick connectors include: an outdoor unit liquid pipe quick connector 15.1, an indoor unit liquid pipe quick connector 15.2, an indoor unit vapor pipe quick connector 15.3, and an outdoor unit vapor pipe quick connector 15.4. Among them, the outdoor unit liquid pipe quick connector 15.1 is connected to the indoor unit liquid pipe quick connector 15.2, and the indoor unit vapor pipe quick connector 15.3 is connected to the outdoor unit vapor pipe quick connector 15.4.

[0028] Referring to Figure 2 , the air conditioner 100 further includes a compressor 11, a four-way valve 12, a condenser 13, an electronic expansion valve 14, an indoor and outdoor connection pipe - liquid pipe 16, an evaporator 17, and an indoor and outdoor connection pipe - vapor pipe 18. Among them, the compressor 11 is connected to the first end of the four-way valve 12, the second end of the four-way valve 12 is connected to one end of the condenser 13 on the outdoor side, the other end of the condenser 13 is sequentially connected to one end of the evaporator 17 on the indoor side through the electronic expansion valve 14, the outdoor unit liquid pipe quick connector 15.1, and the indoor unit liquid pipe quick connector 15.2, the other end of the evaporator 17 is sequentially connected to the third end of the four-way valve 12 through the indoor unit vapor pipe quick connector 15.3 and the outdoor unit vapor pipe quick connector 15.4, and the fourth end of the four-way valve 12 is connected to the compressor 11.

[0029] As Figure 1 shown, the control method of the air conditioner includes the following steps:

[0030] S101. Obtain the operating mode of the air conditioner.

[0031] Specifically, the operating mode of the air conditioner can be obtained through an APP (Application) on a mobile control terminal such as a smart phone, such as: cooling mode, dehumidification mode, heating mode, sleep mode, ventilation mode, intelligent mode, defrosting mode, etc.

[0032] S102. If the air conditioner operates in the cooling mode or the dehumidification mode and lasts for a first preset time, obtain the operating frequency of the compressor of the air conditioner and obtain the cumulative operating time of the compressor.

[0033] Specifically, when the air conditioner is in the cooling mode or the dehumidifying mode and continuously operates for a first preset time, it is determined that the air conditioner meets the initial conditions for oil return control. At this time, the operating frequency fa of the compressor of the air conditioner can be further obtained, and the cumulative operating time t of the compressor is recorded. The cumulative operating time t can be accumulated from the moment when the air conditioner starts to operate in the cooling mode or the dehumidifying mode. At the same time, the time when the compressor stops operating due to the indoor environmental temperature or humidity meeting certain conditions can be not included in the above cumulative operating time t.

[0034] S103. Determine whether the operating frequency and the cumulative operating time of the compressor meet the preset oil return control conditions.

[0035] In an example of the present invention, the preset oil return control conditions may include: the operating frequency of the compressor is less than a first preset frequency, and the cumulative operating time is greater than a second preset time; the operating frequency of the compressor is greater than or equal to the first preset frequency, and the cumulative operating time is greater than a third preset time, where the third preset time is greater than the second preset time.

[0036] Specifically, the preset oil return control conditions are: in the cooling or dehumidifying mode, after the above initial conditions for oil return control are met, at a certain moment, the operating frequency fa of the compressor is lower than the first preset frequency fa0, and the cumulative operating time t of the compressor is greater than t0; or, the operating frequency fa of the compressor is higher than the set threshold fa0, and the cumulative operating time t of the compressor is greater than t0*n. Where fa0 is the first preset frequency of the compressor preset by the storage unit, t0 is the second preset time, t0*n is the third preset time, the third preset time is n times the second preset time, and 6≤n≤8.

[0037] Among them, the storage unit can be set on the air conditioner control board or in the mobile control terminal.

[0038] Specifically, after the initial conditions for oil return control are met, if any one of Condition 1 and Condition 2 is satisfied, it is determined that the preset oil return control conditions are satisfied. Where Condition 1 is: the operating frequency fa of the compressor is lower than the first preset frequency fa0, and the cumulative operating time t of the compressor is greater than t0; Condition 2 is that the operating frequency fa of the compressor is higher than the set threshold fa0, and the cumulative operating time t of the compressor is greater than t0*n.

[0039] S104. If it is satisfied, perform oil return control on the air conditioner.

[0040] In an example of the present invention, oil return control of an air conditioner may include: if the operating frequency of the compressor is less than a second preset frequency, controlling the operating frequency of the compressor to rise to the second preset frequency; if the operating frequency of the compressor is greater than the second preset frequency, controlling the operating frequency of the compressor to drop to the second preset frequency.

[0041] Specifically, when it is detected that oil return is required, obtain the operating frequency of the current compressor. If the operating frequency of the compressor is lower than the second preset frequency fah, perform frequency increase control on the compressor to raise the operating frequency of the compressor to the second preset frequency fah; if the operating frequency of the compressor is higher than the second preset frequency fah, perform frequency decrease control on the compressor to lower the operating frequency of the compressor to the second preset frequency fah. Herein, the second preset frequency fah can be denoted as the preset oil return frequency of the compressor, and its value can be calibrated according to the model of the compressor, the operating conditions of the air conditioner, etc. Therefore, adjusting the operating frequency of the compressor to the preset oil return frequency of the compressor helps to improve the oil return efficiency.

[0042] Further, referring to Figure 2 , an electronic expansion valve is connected to the liquid pipeline of the air conditioner. After adjusting the operating frequency of the compressor to the preset oil return frequency of the compressor, for oil return control of the air conditioner, it may further include: when the operating frequency of the compressor rises to the second preset frequency, controlling the opening degree of the electronic expansion valve to decrease to a fully closed state; when the operating frequency of the compressor drops to the second preset frequency, first control the compressor to operate at the second preset frequency for a fourth preset time, and then control the opening degree of the electronic expansion valve to decrease to a fully closed state.

[0043] Specifically, after adjusting the operating frequency of the compressor to the preset oil return frequency of the compressor, if the operating frequency of the compressor is raised to the preset oil return frequency fah, the opening degree of the electronic expansion valve can be controlled to close until it is fully closed for good oil return. If the operating frequency of the compressor drops to the preset oil return frequency fah, the compressor can be controlled to operate at the preset oil return frequency fah for a fourth preset time t1 first, and then the opening degree of the electronic expansion valve can be controlled to close until it is fully closed for better oil return. Herein, fah is the second preset frequency, t1 is the fourth preset time, and its value can be 30 - 60 s, such as 40 s, 50 s, etc.

[0044] Further, in an embodiment of the present invention, the control method of the air conditioner may further include: when the closing time of the electronic expansion valve is greater than a fifth preset time, end the oil return control of the air conditioner, control the electronic expansion valve to open to the opening degree before the oil return control, and control the operating frequency of the compressor to drop or rise to the operating frequency before the oil return control.

[0045] Specifically, after the electronic expansion valve is closed and the duration is greater than time th, the suction characteristic of the compressor itself can be utilized to pump the oil in the evaporator and the quick connector back to the compressor, completing the forced oil return of the air conditioner. Moreover, control the electronic expansion valve to open to the opening degree before the oil return control, and control the operating frequency of the compressor to decrease or rise back to the operating frequency before the oil return control, and continue refrigeration or dehumidification. Among them, th is the fifth preset time, and the value can be 20 - 30 s, such as 25 s. Through the active forced oil return control, the oil remaining in the evaporator during the operation of the air conditioner can be effectively returned to the compressor, thereby making the lubrication of the compressor sufficient. At the same time, by restoring the air conditioner to the operating state before the oil return control after the oil return control, the air conditioner can automatically continue to refrigerate or dehumidify according to the user's needs, thus meeting the user's needs.

[0046] In summary, for the control method of this air conditioner, by the operating mode, operating time, operating frequency, and cumulative operating time of the air conditioner, it is determined whether to perform forced oil return control, which can ensure that the compressor returns oil at an appropriate time. During the oil return control, by adjusting the operating frequency of the compressor to the preset oil return frequency and controlling the opening degree of the electronic expansion valve to decrease to closing, the effectiveness of the compressor oil return can be improved, reducing the damage of the compressor caused by insufficient lubrication, thereby extending the service life of the compressor. At the same time, market complaints can be reduced and brand competitiveness can be enhanced.

[0047] The embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the control method of the air conditioner in the above embodiment is implemented.

[0048] For the computer-readable storage medium of the embodiment of the present invention, when the computer program stored thereon corresponding to the control method of the above air conditioner is executed by a processor, the effectiveness of the compressor oil return can be improved, reducing the damage of the compressor caused by insufficient lubrication, thereby extending the service life of the compressor. At the same time, market complaints can be reduced and brand competitiveness can be enhanced.

[0049] The embodiment of the present invention also provides an electronic device, including a memory and a processor. A computer program is stored on the memory. When the computer program is executed by the processor, the control method of the air conditioner as described above is implemented.

[0050] For the electronic device of the embodiment of the present invention, when the computer program stored on its memory corresponding to the control method of the above air conditioner is executed by a processor, the effectiveness of the compressor oil return can be improved, reducing the damage of the compressor caused by insufficient lubrication, thereby extending the service life of the compressor. At the same time, market complaints can be reduced and brand competitiveness can be enhanced.

[0051] Figure 3Structural block diagram of a control device of an air conditioner according to an embodiment of the present invention.

[0052] In an embodiment of the present invention, the air conditioner 100 has quick connectors. Specifically, referring to Figure 2 , the quick connectors include: an outdoor unit liquid pipe quick connector 15.1, an indoor unit liquid pipe quick connector 15.2, an indoor unit vapor pipe quick connector 15.3, and an outdoor unit vapor pipe quick connector 15.4. Among them, the outdoor unit liquid pipe quick connector 15.1 is connected to the indoor unit liquid pipe quick connector 15.2, and the indoor unit vapor pipe quick connector 15.3 is connected to the outdoor unit vapor pipe quick connector 15.4.

[0053] Referring to Figure 2 , the air conditioner 100 further includes a compressor 11, a four-way valve 12, a condenser 13, an electronic expansion valve 14, an indoor-outdoor connection pipe - liquid pipe 16, an evaporator 17, and an indoor-outdoor connection pipe - vapor pipe 18. Among them, the compressor 11 is connected to the first end of the four-way valve 12, the second end of the four-way valve 12 is connected to one end of the condenser 13 on the outdoor side, the other end of the condenser 13 is sequentially connected to one end of the evaporator 17 on the indoor side through the electronic expansion valve 14, the outdoor unit liquid pipe quick connector 15.1, and the indoor unit liquid pipe quick connector 15.2, and the other end of the evaporator 17 is sequentially connected to the third end of the four-way valve 12 through the indoor unit vapor pipe quick connector 15.3 and the outdoor unit vapor pipe quick connector 15.4, and the fourth end of the four-way valve 12 is connected to the compressor 11.

[0054] As Figure 3 shown, the control device 200 of the air conditioner includes: a first acquisition module 21 for acquiring the operating mode of the air conditioner 100; a second acquisition module 22 for acquiring the operating frequency of the compressor 11 of the air conditioner 100 and the cumulative operating time of the compressor 11 when the air conditioner 100 operates in a cooling mode or a dehumidifying mode and lasts for a first preset time; a judgment module 23 for judging whether the operating frequency and the cumulative operating time of the compressor 11 meet a preset oil return control condition; and a control module 24 for performing oil return control on the air conditioner 100 when the operating frequency and the cumulative operating time of the compressor 11 meet the preset oil return control condition.

[0055] Specifically, the operation mode can be obtained by the first acquisition module 21, such as: refrigeration mode, dehumidification mode, heating mode, sleep mode, ventilation mode, intelligent mode, defrosting mode, etc. When the air conditioner 100 is in the refrigeration mode or the dehumidification mode and lasts for a set threshold value, i.e., the first preset time, at this time, the operation frequency fa of the compressor 11 of the air conditioner 100 can be further obtained by the second acquisition module 22, and the cumulative operation time t of the compressor 11 is recorded. Among them, the cumulative operation time t can be accumulated from the moment when the air conditioner 100 starts to operate in the refrigeration mode or the dehumidification mode; at the same time, the time when the compressor 11 stops operating due to the indoor environmental temperature or humidity meeting certain conditions can be not included in the above cumulative operation time t.

[0056] The determination module 23 determines whether the operation frequency and the cumulative operation time meet the preset oil return control condition, that is, the operation frequency fa of the compressor 11 is lower than the set threshold value fa0, and the cumulative operation time t is greater than t0; or, the operation frequency fa of the compressor 11 is higher than the set threshold value fa0, and the cumulative operation time t of the compressor 11 is greater than t0*n. Among them, fa0 is the first preset frequency of the compressor 11 preset by the storage unit, t0 is the second preset time, t0*n is the third preset time, the third preset time is n times the second preset time, and 6≤n≤8.

[0057] When the operation frequency and the cumulative operation time meet the preset oil return control condition, the oil return control of the air conditioner 100 can be performed through the control module 24.

[0058] In an example of the present invention, the oil return control of the air conditioner 100 may include: obtaining the operation frequency of the current compressor 11. If the operation frequency of the compressor 11 is lower than the second preset frequency fah, the compressor 11 is subjected to frequency increase control to increase the operation frequency of the compressor 11 to the second preset frequency fah; if the operation frequency of the compressor 11 is higher than the second preset frequency fah, the compressor 11 is subjected to frequency decrease control to decrease the operation frequency of the compressor 11 to the second preset frequency fah. Among them, the second preset frequency fah can be recorded as the preset oil return frequency of the compressor 11, and its value can be calibrated according to the model of the compressor 11, the operation condition of the air conditioner 100, etc. Therefore, adjusting the operation frequency of the compressor 11 to the preset oil return frequency of the compressor 11 helps to improve the oil return efficiency.

[0059] Further, refer to Figure 2, an electronic expansion valve 14 is connected to the liquid pipeline of the air conditioner 100 for oil return control of the air conditioner 100. It may further include: after adjusting the operating frequency of the compressor 11 to the preset oil return frequency of the compressor 11, if the operating frequency of the compressor 11 is increased to the preset oil return frequency fah, the opening degree of the electronic expansion valve 14 can be controlled to close until it is completely closed for good oil return. If the operating frequency of the compressor 11 is decreased to the preset oil return frequency fah, the compressor 11 can be controlled to operate at the preset oil return frequency fah for a fourth preset time t1 first, and then the opening degree of the electronic expansion valve 14 can be controlled to close until it is completely closed for better oil return. Wherein, fah is the second preset frequency, and t1 is the fourth preset time, and its value can be 30 - 60 s, such as 40 s, 50 s, etc.

[0060] Furthermore, the control device 200 of the air conditioner may further include: the control module 24 can specifically be further used to, when the electronic expansion valve 14 is closed and the duration is greater than the fifth preset time th, utilize the suction characteristic of the compressor 11 itself to pump the oil in the evaporator 17 and the quick connector back to the compressor 11 to complete the forced oil return of the air conditioner 100. And, control the electronic expansion valve 14 to open to the opening degree before the oil return control, and control the operating frequency of the compressor 11 to decrease or rise back to the operating frequency before the oil return control to continue refrigeration or dehumidification. Wherein, th is the fifth preset time, and its value can be 20 - 30 s, such as 25 s. Through active forced oil return control, the oil remaining in the evaporator 17 during the operation of the air conditioner 100 can be effectively returned to the compressor 11, thereby making the lubrication of the compressor 11 sufficient. At the same time, by restoring the air conditioner 100 to the operating state before the oil return control after the oil return control, the air conditioner 100 can automatically continue to refrigerate or dehumidify according to the user's needs, thus meeting the user's needs.

[0061] In summary, the control device of this air conditioner determines whether to perform forced oil return control through the operating mode, operating time, operating frequency of the compressor, and cumulative operating time of the air conditioner, which can ensure compressor oil return at an appropriate time. During oil return control, by adjusting the operating frequency of the compressor to the preset oil return frequency and controlling the opening degree of the electronic expansion valve to decrease to close, the effectiveness of compressor oil return can be improved, reducing the damage of the compressor caused by insufficient lubrication, thereby extending the service life of the compressor. At the same time, market complaints can be reduced and brand competitiveness can be enhanced.

[0062] The present invention also provides an air conditioner, including the electronic device in the above embodiment, or the control device of the air conditioner in the above embodiment.

[0063] The air conditioner according to the embodiment of the present invention can improve the effectiveness of the compressor oil return through the above-mentioned electronic device or the control device of the air conditioner, reduce the damage caused by insufficient lubrication of the compressor, and thus can extend the service life of the compressor. At the same time, it can reduce market complaints and enhance brand competitiveness.

[0064] It should be noted that the logic and / or steps represented in the flowchart or described in other ways herein, for example, can be considered as a definite sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus or device (such as a computer-based system, a system including a processor, or other systems that can fetch instructions from the instruction execution system, apparatus or device and execute the instructions), or in combination with these instruction execution systems, apparatus or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion (electronic device) having one or more wirings, a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, then editing, interpreting, or otherwise processing it as appropriate, and then storing it in a computer memory.

[0065] It should be understood that each part of the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiment, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0066] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0067] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below", and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0068] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A control method for an air conditioner, characterized in that, the air conditioner has a quick connector, and the method includes the following steps: Obtain the operating mode of the air conditioner; If the air conditioner operates in the cooling mode or the dehumidifying mode and lasts for a first preset time, obtain the operating frequency of the compressor of the air conditioner and obtain the cumulative operating time of the compressor; Judge whether the operating frequency and the cumulative operating time of the compressor meet the preset oil return control condition; If it is satisfied, perform oil return control on the air conditioner; The performing oil return control on the air conditioner includes: If the operating frequency of the compressor is less than a second preset frequency, control the operating frequency of the compressor to rise to the second preset frequency; If the operating frequency of the compressor is greater than the second preset frequency, control the operating frequency of the compressor to drop to the second preset frequency; An electronic expansion valve is connected to the liquid pipeline of the air conditioner, and the performing oil return control on the air conditioner further includes: When the operating frequency of the compressor rises to the second preset frequency, control the opening degree of the electronic expansion valve to decrease to full close; When the operating frequency of the compressor drops to the second preset frequency, first control the compressor to operate at the second preset frequency for a fourth preset time, and then control the opening degree of the electronic expansion valve to decrease to full close.

2. The control method for an air conditioner according to claim 1, characterized in that, the preset oil return control condition includes: the operating frequency of the compressor is less than a first preset frequency, and the cumulative operating time is greater than a second preset time; the operating frequency of the compressor is greater than or equal to the first preset frequency, and the cumulative operating time is greater than a third preset time, wherein the third preset time is greater than the second preset time.

3. The control method for an air conditioner according to claim 2, characterized in that, the method further includes: When the closing time of the electronic expansion valve is greater than a fifth preset time, end the oil return control on the air conditioner, control the electronic expansion valve to open to the opening degree before the oil return control, and control the operating frequency of the compressor to drop or rise to the operating frequency before the oil return control.

4. The control method for an air conditioner according to claim 3, characterized in that, the third preset time is n times the second preset time, wherein 6≤n≤8; the value of the fourth preset time is 30 - 60 s, and the value of the fifth preset time is 20 - 30 s.

5. A computer-readable storage medium, on which a computer program is stored, characterized in that, when the computer program is executed by a processor, it implements the control method for an air conditioner according to any one of claims 1 - 4.

6. An electronic device, including a memory and a processor, and a computer program is stored on the memory, characterized in that, when the computer program is executed by the processor, it implements the control method for an air conditioner according to any one of claims 1 - 4.

7. A control device for an air conditioner, characterized in that, The air conditioner has a quick connector, and the control device is used to execute the control method of the air conditioner described in any one of the above claims 1-4. The control device includes: A first acquisition module, which is used to acquire the operating mode of the air conditioner; A second acquisition module, which is used to acquire the operating frequency of the compressor of the air conditioner and the cumulative operating time of the compressor when the air conditioner operates in the cooling mode or the dehumidifying mode and lasts for a first preset time; A judgment module, which is used to judge whether the operating frequency and the cumulative operating time of the compressor meet the preset oil return control conditions; A control module, which is used to perform oil return control on the air conditioner when the operating frequency and the cumulative operating time of the compressor meet the preset oil return control conditions.

8. An air conditioner Characterized in that It includes the electronic device described in claim 6, or the control device of the air conditioner described in claim 7.

Images