Compressor overload protection control method and device and air conditioner

Abstract

The invention provides a compressor overload protection control method and device and an air conditioner, and the method comprises the steps that under the condition that a compressor of equipment is overloaded, the compressor is at least controlled to be restarted, the number of times that the compressor is overloaded is obtained, and the equipment comprises at least one of the air conditioner and a dehumidifier; under the condition that the overload frequency of the compressor reaches the preset frequency, it is determined that the compressor breaks down; and under the condition that the compressor breaks down, the compressor is at least controlled to be shut down.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a control method and device for compressor overload protection and an air conditioner. Background Art

[0002] Currently, when the compressor shuts down for overload protection, the system is unaware that the compressor has shut down and continues to run and start the compressor, causing the compressor to start and stop frequently in a short period of time. This will cause the system pipelines to be frequently impacted by pulse pressure, thereby increasing the risk of pipeline burst. Summary of the invention

[0003] The main purpose of the present application is to provide a control method, device and air conditioner for compressor overload protection, so as to at least solve the problem that the equipment containing compressor in the prior art has a high risk of pipe burst.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a control method for compressor overload protection is provided, comprising: when the compressor of the equipment is overloaded, at least controlling the compressor to restart and obtaining the number of times the compressor is overloaded, the equipment comprises at least one of an air conditioner and a dehumidifier; when the number of times the compressor is overloaded reaches a preset number, determining that the compressor is faulty; when the compressor fails, at least controlling the compressor to shut down.

[0005] Optionally, at least controlling the compressor to shut down includes: determining that the duration of the device being in the first predetermined state after powering on is a first duration, the duration of the device being in the second predetermined state after powering on is a second duration, the duration of the compressor being in the second predetermined state after restarting is a third duration, and the duration of the compressor being in the first predetermined state after restarting is a fourth duration, the first predetermined state being a state in which the difference between the internal temperature of the device and the temperature of the evaporator coil of the indoor unit of the device is less than a first preset temperature, the second predetermined state being a state in which the difference is greater than a second preset temperature, and the second preset temperature being greater than the first preset temperature; determining whether the smaller value of the second duration and the third duration is greater than or equal to a preset threshold time; if the smaller value is greater than or equal to the threshold time, controlling the compressor to shut down for a second predetermined time after running for the first predetermined time, the first predetermined time being the product of an operating coefficient and the smaller value, the operating coefficient being a preset coefficient, and the second predetermined time being the larger value of the first duration and the fourth duration; if the smaller value is less than the threshold time, controlling the device to shut down.

[0006] Optionally, before at least controlling the compressor to restart, the method also includes: when the equipment is powered on and running, determining whether the first duration is greater than a preset time; if the first duration is greater than the preset time, determining that the compressor is overloaded, and if the first duration is less than or equal to the preset time, determining that the compressor is not overloaded.

[0007] Optionally, the operating coefficient is less than 1.

[0008] Optionally, when the compressor is overloaded, at least the compressor is controlled to restart, including: when the compressor is overloaded, the compressor is controlled to stop; when the difference between the internal temperature of the device and the temperature of the evaporator coil of the internal machine of the device is greater than or equal to a third preset temperature, the stopped compressor is controlled to restart.

[0009] Optionally, when the compressor is not overloaded, the method further includes: acquiring environmental parameters, the environmental parameters including ambient temperature and ambient humidity; comparing the environmental parameters with user-set parameters, the user-set parameters including user-set temperature and user-set humidity; determining the working mode of the device according to the working mode set by the user, the working mode including cooling mode, heating mode and dehumidification mode; when the device operates in the cooling mode and the ambient temperature is higher than the user-set temperature, starting the compressor and controlling the fan of the device to operate; when the device operates in the cooling mode and the ambient temperature is lower than or equal to the user-set temperature, controlling the compressor to stop; when the device operates in the heating mode and the ambient temperature is lower than the user-set temperature, starting the compressor and controlling the fan to operate; when the device operates in the heating mode and the ambient temperature is higher than or equal to the user-set temperature, controlling the compressor to stop; when the device operates in the dehumidification mode and the ambient humidity is higher than the user-set humidity, starting the compressor; when the device operates in the dehumidification mode and the ambient humidity is lower than the user-set humidity, controlling the compressor to stop.

[0010] Optionally, controlling the operation of the fan of the device includes: obtaining the evaporator temperature of the device; comparing the evaporator temperature with a preset evaporator temperature; when the evaporator temperature is lower than or equal to the preset evaporator temperature, reducing the speed of the fan; when the evaporator temperature is higher than the preset evaporator temperature, increasing the speed of the fan.

[0011] Optionally, the method further comprises: when the compressor is overloaded, sending a reminder message indicating that the compressor is overloaded to the terminal.

[0012] According to another aspect of the present application, a compressor overload protection device is provided, comprising: a first control unit, used to at least control the compressor to restart when the compressor of the device is overloaded, and obtain the number of times the compressor is overloaded, wherein the device comprises at least one of an air conditioner and a dehumidifier; a determination unit, used to determine that the compressor is faulty when the number of times the compressor is overloaded reaches a preset number; and a second control unit, used to at least control the compressor to stop when the compressor fails.

[0013] According to another aspect of the present application, an air conditioner is provided, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include methods for executing any one of the described methods.

[0014] By applying the technical solution of the present application, the compressor is first controlled to restart and the number of times the compressor is overloaded is obtained; then, when the number of times the compressor is overloaded reaches a preset number, it is determined that the compressor is faulty; finally, when it is determined that the compressor is faulty, at least the compressor is controlled to shut down. The present application obtains the number of overloads of the compressor and intervenes in the start and stop of the compressor when the number of overloads reaches a preset number, thereby avoiding frequent start and stop of the compressor in a short period of time and reducing the risk of pipe burst. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 A hardware structure block diagram of a mobile terminal for executing a control method for compressor overload protection provided in an embodiment of the present application is shown;

[0017] Figure 2 A flow chart of a method for controlling compressor overload protection provided according to an embodiment of the present application is shown;

[0018] Figure 3 A flow chart showing a method for controlling compressor overload protection provided by an embodiment of the present application is shown;

[0019] Figure 4A schematic diagram of an overload protection device for a compressor provided according to an embodiment of the present application is shown.

[0020] The above drawings include the following reference numerals:

[0021] 102, processor; 104, memory; 106, transmission device; 108, input and output devices. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the accompanying drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] As introduced in the background technology, in the prior art, when the compressor shuts down for overload protection, the system does not know that the compressor has shut down, and continues to run and start the compressor, causing the compressor to start and stop frequently in a short period of time, which will cause the system pipeline to be frequently impacted by pulse pressure. Therefore, the equipment containing the compressor has a high risk of pipeline burst. In order to solve the above technical problems, the embodiments of the present application provide a control method, device and air conditioner for compressor overload protection. The technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0026] The method embodiments provided in the embodiments of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a mobile terminal as an example, Figure 1FIG. 1 is a hardware structure block diagram of a mobile terminal of a method for controlling compressor overload protection according to an embodiment of the present invention. Figure 1 As shown, the mobile terminal may include one or more ( Figure 1 Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 and an input / output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is for illustration only and does not limit the structure of the mobile terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations are shown.

[0027] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the control method for compressor overload protection in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, the method described is implemented. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the mobile terminal via a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof. The transmission device 106 is used to receive or send data via a network. The specific example of the network may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0028] In this embodiment, a control method for compressor overload protection running on a mobile terminal, a computer terminal or a similar computing device is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0029] Figure 2 FIG. 1 is a flow chart of a control method for compressor overload protection according to an embodiment of the present application. Figure 2 As shown, the method comprises the following steps:

[0030] Step S201, when a compressor of a device is overloaded, at least control the compressor to restart, and obtain the number of times the compressor is overloaded, wherein the device includes at least one of an air conditioner and a dehumidifier;

[0031] Specifically, the air conditioner may be a fixed-frequency air conditioner, and the compressor may be a fixed-frequency compressor.

[0032] Step S202, when the number of times the compressor is overloaded reaches a preset number, determining that the compressor is faulty;

[0033] Specifically, the preset number is a safety value of the number of times the air conditioner allows the compressor to be overloaded for protection, and is a parameter for determining whether the compressor is faulty. If it is determined that the number of times the compressor is overloaded for protection reaches the preset number, it is determined that the compressor is faulty.

[0034] Step S203: when the compressor fails, at least control the compressor to stop.

[0035] Specifically, the compressor can be forced to stop working by disconnecting the AC contactor of the device. Taking the device as an air conditioner as an example, if the device is in cooling mode, the indoor fan of the air conditioner is controlled to start, and if the device is in heating mode, the indoor fan of the device is controlled to stop.

[0036] Through the embodiment, the compressor is first controlled to restart and the number of times the compressor is overloaded is obtained; then, when the number of times the compressor is overloaded reaches a preset number, it is determined that the compressor is faulty; finally, when it is determined that the compressor is faulty, at least the compressor is controlled to stop. This application obtains the number of overloads of the compressor and intervenes in the start and stop of the compressor when the number of overloads reaches a preset number, thereby avoiding frequent start and stop of the compressor in a short period of time and reducing the risk of pipe burst.

[0037] In an optional solution, step S201: at least controlling the compressor to stop, comprises:

[0038] Step S2011, determining that the duration of the device being in the first predetermined state after being powered on is the first duration, the duration of the device being in the second predetermined state after being powered on is the second duration, the duration of the compressor being in the second predetermined state after being restarted is the third duration, and the duration of the compressor being in the first predetermined state after being restarted is the fourth duration, the first predetermined state is a state in which the difference between the internal temperature of the device and the temperature of the evaporator coil of the indoor unit of the device is less than a first preset temperature, the second predetermined state is a state in which the difference is greater than a second preset temperature, and the second preset temperature is greater than the first preset temperature;

[0039] Specifically, when the compressor is overloaded, the internal temperature of the equipment is substantially the same as the temperature of the evaporator coil inside the equipment. Considering the accuracy of temperature measurement and detection deviation, the recommended value of the first preset temperature is 0.5-1.5°C.

[0040] Step S2012, determining whether the smaller value of the second duration and the third duration is greater than or equal to a preset threshold time;

[0041] Specifically, the threshold time may be adjusted according to actual conditions.

[0042] Step S2013, when the smaller value is greater than or equal to the threshold time, controlling the compressor to run for a first predetermined time and then stop for a second predetermined time, the first predetermined time being the product of an operation coefficient and the smaller value, the operation coefficient being a preset coefficient, and the second predetermined time being the larger value between the first duration and the fourth duration;

[0043] Step S2014: When the smaller value is less than the threshold time, control the device to shut down.

[0044] In the embodiment, by determining whether the smaller value of the second duration and the third duration is greater than or equal to the preset threshold time, when the smaller value of the second duration and the third duration is greater than or equal to the preset threshold time, it means that controlling the compressor to stop for a period of time can alleviate the problem of compressor failure, and therefore the running and stopping time of the compressor is further controlled, thereby further alleviating the problem of compressor failure. When the smaller value of the second duration and the third duration is less than the preset threshold time, it means that controlling the compressor to stop for a period of time can no longer alleviate the problem of compressor failure, and therefore the equipment is directly controlled to stop, thereby achieving further measures in the event of compressor failure to reduce the possibility of equipment pipe bursting.

[0045] In another optional solution, before at least controlling the compressor to restart, the method further includes: when the device is powered on, determining whether the first duration is greater than a preset time; when the first duration is greater than the preset time, determining that the compressor is overloaded, and when the first duration is less than or equal to the preset time, determining that the compressor is not overloaded. In the embodiment, by monitoring the first duration and comparing it with the preset time, it is possible to accurately determine whether the compressor is overloaded, which provides accurate support for the subsequent timely determination of compressor failure and further reduces the possibility of pipe explosion.

[0046] Specifically, about 20 seconds after the compressor is overloaded, the internal temperature of the equipment is basically the same as the temperature of the evaporator coil inside the equipment. Considering the temperature detection accuracy and detection deviation, the preset time can be 10 to 60 seconds.

[0047] In some other exemplary embodiments, the operating coefficient is less than 1.

[0048] Specifically, the operating coefficient can be any number between 0.5 and 0.95.

[0049] In the embodiment, the operating coefficient is less than 1, which ensures that the operating time of the compressor is less than the second duration and the third duration, further shortens the operating time of the compressor, ensures that the compressor will not shut down due to excessive operating time, further controls the number of times the compressor starts and stops due to overload, and reduces the risk of pipe burst.

[0050] In another optional scheme, when the compressor is overloaded, at least the compressor is controlled to restart, including: when the compressor is overloaded, the compressor is controlled to stop; when the difference between the internal temperature of the equipment and the temperature of the evaporator coil of the indoor unit of the equipment is greater than or equal to a third preset temperature, the stopped compressor is controlled to restart.

[0051] In the described embodiment, when the compressor is overloaded, the compressor is promptly controlled to shut down so that the compressor can be shut down for a period of time for cooling, and then restarted when the difference between the internal temperature of the equipment and the temperature of the evaporator coil of the internal machine of the equipment reaches a third preset temperature, thereby further avoiding pipe bursting.

[0052] Specifically, the third preset temperature is lower than the second preset temperature and higher than the first preset temperature.

[0053] Specifically, the third preset temperature may be 1.1°C.

[0054] In another optional solution, when the compressor is not overloaded, the method further includes:

[0055] Step S204, obtaining environmental parameters, wherein the environmental parameters include environmental temperature and environmental humidity;

[0056] Specifically, the ambient temperature and ambient humidity are collected in real time through sensors installed on the equipment.

[0057] Step S205, comparing the environmental parameters with the user-set parameters, the user-set parameters including the user-set temperature and the user-set humidity;

[0058] Specifically, by comparing the environmental parameters with the user-set parameters, it is determined whether the user needs are met.

[0059] Step S206, determining the working mode of the device according to the working mode set by the user, wherein the working mode includes a cooling mode, a heating mode and a dehumidification mode;

[0060] Step S207, when the device is operating in the cooling mode and the ambient temperature is higher than the user-set temperature, start the compressor and control the fan of the device to operate; when the device is operating in the cooling mode and the ambient temperature is lower than or equal to the user-set temperature, control the compressor to stop;

[0061] Specifically, in cooling mode, when the ambient temperature is higher than the user-set temperature, the control system controls the compressor to start. The compressor compresses the gaseous refrigerant, and then sends it to the condenser for heat dissipation and then enters the evaporator through the capillary tube, making the evaporator cooler. The fan of the equipment blows the indoor air through the evaporator to blow out cold air. When the indoor temperature reaches or is lower than the temperature set by the user, the control system controls the compressor to stop.

[0062] Step S208, when the device is operating in the heating mode and the ambient temperature is lower than the user-set temperature, start the compressor and control the fan to operate; when the device is operating in the heating mode and the ambient temperature is higher than or equal to the user-set temperature, control the compressor to stop;

[0063] Specifically, in heating mode, when the ambient temperature is lower than the user-set temperature, the control system controls the compressor to start, sucking in low-temperature and low-pressure refrigerant gas, which enters the condenser after compression, passes through the throttling device, and enters the evaporator to achieve heating. At the same time, the fan of the equipment blows out the hot air to increase the indoor temperature. When the ambient temperature reaches or exceeds the temperature set by the user, the control system will control the compressor to stop.

[0064] Step S209, when the device is operating in the dehumidification mode and the ambient humidity is higher than the user-set humidity, start the compressor; when the device is operating in the dehumidification mode and the ambient humidity is lower than the user-set humidity, control the compressor to stop.

[0065] Specifically, in dehumidification mode, when the ambient humidity is higher than the user-set humidity, the control system controls the compressor to start, compresses the refrigerant into high-temperature and high-pressure gas, and then sends it to the condenser through the throttling device and into the evaporator. At the same time, the water vapor in the air condenses into water on the surface of the evaporator and is discharged outdoors, thereby achieving a dehumidification effect. In dehumidification mode, in order to enhance the dehumidification effect, the fan speed of the equipment is usually reduced. When the indoor humidity drops below the humidity set by the user, the control system controls the compressor to stop.

[0066] In the described embodiment, when the compressor is not overloaded, environmental parameters are continuously acquired, compared with the size of the parameters set by the user in real time, and the operating parameters are adjusted in time, so that the environmental parameters meet the parameters set by the user, thereby improving the user experience.

[0067] In some other exemplary schemes of the present application, controlling the operation of the fan of the device includes: obtaining the evaporator temperature of the device; comparing the evaporator temperature with the preset evaporator temperature; when the evaporator temperature is lower than or equal to the preset evaporator temperature, reducing the speed of the fan; when the evaporator temperature is higher than the preset evaporator temperature, increasing the speed of the fan. In the embodiment, when the evaporator temperature is lower than or equal to the preset evaporator temperature, the speed of the fan is reduced so that the evaporator can return to temperature as soon as possible; when the evaporator temperature is higher than the preset evaporator temperature, the speed of the fan is increased so that the evaporator can dissipate heat faster; adjusting the speed of the fan according to the comparison result between the evaporator temperature and the preset evaporator temperature helps the evaporator to operate within a suitable temperature range, thereby ensuring the stability of the system.

[0068] According to some further optional schemes of the present application, the method further includes: when the compressor is overloaded, sending a reminder message to the terminal indicating that the compressor is overloaded. In the embodiment, by outputting the reminder message, the user is notified immediately, so that the user can quickly understand that the current working state of the compressor is abnormal, and thus take corresponding measures. The compressor overload information contained in the reminder message can provide important clues for subsequent fault diagnosis, help technicians quickly locate the problem, and improve maintenance efficiency.

[0069] Specifically, the reminder message can be a shutdown reminder message, such as: "The system is currently operating abnormally and is about to be shut down", which is used to prompt that the device is about to perform a power-off or shutdown process. The reminder message can also be a conversion reminder message, such as: "The system is currently operating abnormally and is about to be converted to safe mode", which is used to prompt that the control of the equipment compressor is about to be intervened.

[0070] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the implementation process of the compressor overload protection control method of the present application will be described in detail below in combination with specific embodiments.

[0071] This embodiment relates to a specific control method for compressor overload protection, such as Figure 3 As shown, the following steps are included:

[0072] Step S1: Determine whether the device is in the second predetermined state. If not, perform normal operation. If in the second predetermined state, execute step S2.

[0073] Step S2: Record the duration of the second predetermined state;

[0074] Step S3: Determine whether the compressor is overloaded. If the compressor is not overloaded, perform normal operation. If the compressor is overloaded, execute step S4.

[0075] Step S4: restarting the compressor, and recording the number of times the compressor is overloaded and the duration of the first predetermined state;

[0076] Step S5: Determine whether the overload times have reached a preset number. If the overload times have not reached the preset number, then loop through steps S1, S2, S3, and S4 at least once. If the overload times have reached the preset number, then execute step S6.

[0077] Step S6: Determine whether the minimum value of the duration of the second predetermined state recorded is greater than or equal to the preset threshold time. If the minimum value of the duration of the second predetermined state recorded is less than the preset threshold time, control the device to shut down. If the minimum value of the duration of the second predetermined state recorded is greater than or equal to the preset threshold time, execute step S7.

[0078] Step S7: Control the compressor to run for a first predetermined time and then stop for a second predetermined time, and then execute step S1.

[0079] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0080] Exemplarily, the equipment is turned on for refrigeration operation, and it is determined whether the difference between the internal temperature of the equipment and the temperature of the evaporator coil of the equipment's indoor unit is greater than or equal to 3°C. Specifically, the 3°C here can be adjusted according to the situation. If it is not satisfied, normal operation is performed. If it is satisfied, it means that the equipment has an adjustment effect. At this time, the timing is started to record the duration that the difference between the internal temperature of the equipment and the temperature of the evaporator coil of the equipment's indoor unit is greater than or equal to 3°C, and the overload protection judgment is started. The judgment conditions are: the difference between the internal temperature of the equipment and the temperature of the evaporator coil of the equipment's indoor unit is less than 1°C and meets greater than or equal to 30s. The difference between the internal temperature of the equipment and the temperature of the evaporator coil of the equipment's indoor unit is less than 1°C, which means that the equipment has no adjustment effect at this time. If the compressor does not appear If the compressor is overloaded, it will be operated normally. If the compressor is overloaded, it will be restarted and it will be determined whether the number of times the compressor is overloaded has reached 2 times. If the number of times the compressor is overloaded has not reached 2 times, it will continue to determine whether the difference between the internal temperature of the device and the temperature of the evaporator coil of the internal machine of the device is greater than or equal to 3°C, and record the duration of the difference between the internal temperature of the device and the temperature of the evaporator coil of the internal machine of the device being greater than or equal to 3°C. If the number of times the compressor is overloaded has reached 2 times, it means that the compressor has failed. At this time, it is determined whether the smaller value of the duration of the difference between the internal temperature of the two devices and the temperature of the evaporator coil of the internal machine of the device being greater than or equal to 3°C is greater than 30 minutes. Specifically, the 30 minutes here can be adjusted according to the situation. If the smaller value is less than 30 minutes, it means that the time for the adjustment effect is too short, so the device is shut down and a reminder is output to assist after-sales service in troubleshooting. If the smaller value is greater than 30 minutes, the compressor will continue to be controlled to run for the first predetermined time and shut down for the second predetermined time. The first predetermined time is the operation coefficient multiplied by the smaller value. Exemplarily, the operation coefficient is 0.8. Therefore, the operation time at this time is less than the operation time of the previous two times that caused the compressor overload, preventing the compressor from being overloaded again.

[0081] The embodiment of the present application also provides an overload protection device for a compressor. It should be noted that the overload protection device for a compressor in the embodiment of the present application can be used to execute the control method for compressor overload protection provided in the embodiment of the present application. The device is used to implement the embodiments and preferred implementations, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware for a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0082] The following is an introduction to the compressor overload protection device provided in an embodiment of the present application.

[0083] Figure 4 Schematic diagram of an overload protection device for a compressor according to an embodiment of the present application. Figure 4 As shown, the device comprises:

[0084] A first control unit 10 is used to at least control the compressor to restart when the compressor of the device is overloaded, and obtain the number of times the compressor is overloaded, wherein the device includes at least one of an air conditioner and a dehumidifier;

[0085] Specifically, the air conditioner may be a fixed-frequency air conditioner, and the compressor may be a fixed-frequency compressor.

[0086] A first determination unit 20 is used to determine that the compressor is faulty when the number of times the compressor is overloaded reaches a preset number;

[0087] Specifically, the preset number is a safety value of the number of times the air conditioner allows the compressor to be overloaded for protection, and is a parameter for determining whether the compressor is faulty. If it is determined that the number of times the compressor is overloaded for protection reaches the preset number, it is determined that the compressor is faulty.

[0088] The second control unit 30 is used for at least controlling the compressor to stop when the compressor fails.

[0089] Specifically, the compressor can be forced to stop working by disconnecting the AC contactor of the device. Taking the device as an air conditioner as an example, if the device is in cooling mode, the indoor fan of the air conditioner is controlled to start, and if the device is in heating mode, the indoor fan of the device is controlled to stop.

[0090] Through the embodiment, the first control unit controls the compressor to restart and obtains the number of times the compressor is overloaded; the first determination unit determines that the compressor is faulty when the number of times the compressor is overloaded reaches a preset number; the second control unit at least controls the compressor to stop when it is determined that the compressor is faulty. The present application obtains the number of overloads of the compressor and intervenes in the start and stop of the compressor when the number of overloads reaches a preset number, thereby avoiding frequent start and stop of the compressor in a short period of time and reducing the risk of pipe burst.

[0091] In an optional solution, the second control unit includes:

[0092] a first determining module, determining that the duration of the device being in the first predetermined state after being powered on is a first duration, the duration of the device being in the second predetermined state after being powered on is a second duration, the duration of the compressor being in the second predetermined state after being restarted is a third duration, and the duration of the compressor being in the first predetermined state after being restarted is a fourth duration, the first predetermined state being a state in which the difference between the internal temperature of the device and the temperature of the evaporator coil of the indoor unit of the device is less than a first preset temperature, the second predetermined state being a state in which the difference is greater than a second preset temperature, and the second preset temperature being greater than the first preset temperature;

[0093] Specifically, when the compressor is overloaded, the internal temperature of the equipment is substantially the same as the temperature of the evaporator coil inside the equipment. Considering the accuracy of temperature measurement and detection deviation, the recommended value of the first preset temperature is 0.5-1.5°C.

[0094] A second determination module, determining whether a smaller value between the second duration and the third duration is greater than or equal to a preset threshold time;

[0095] Specifically, the threshold time may be adjusted according to actual conditions.

[0096] A first control module controls the compressor to stop for a second predetermined time after running for a first predetermined time when the smaller value is greater than or equal to the threshold time, wherein the first predetermined time is the product of an operation coefficient and the smaller value, the operation coefficient is a preset coefficient, and the second predetermined time is a larger value between the first duration and the fourth duration;

[0097] The second control module controls the device to shut down when the smaller value is less than the threshold time.

[0098] In the embodiment, by determining whether the smaller value of the second duration and the third duration is greater than or equal to the preset threshold time, when the smaller value of the second duration and the third duration is greater than or equal to the preset threshold time, it means that controlling the compressor to stop for a period of time can alleviate the problem of compressor overload, and therefore the running and stopping time of the compressor is further controlled, thereby further alleviating the problem of compressor overload; when the smaller value of the second duration and the third duration is less than the preset threshold time, it means that controlling the compressor to stop for a period of time can no longer alleviate the problem of compressor overload, and therefore the equipment is directly controlled to stop, thereby achieving further measures in the case of compressor overload to reduce the possibility of equipment pipe burst.

[0099] In another optional solution, the device further includes:

[0100] a second determining unit, before at least controlling the compressor to restart, in the case where the device is powered on and running, determining whether the first duration is greater than a preset time;

[0101] The third determination unit determines that the compressor is overloaded when the first duration is greater than the preset time, and determines that the compressor is not overloaded when the first duration is less than or equal to the preset time.

[0102] In the embodiment, by accurately judging whether the compressor is overloaded, the overload condition of the compressor can be fed back to the control system in a timely manner, so that the control system can make a decision in time according to the condition of the compressor, further reducing the possibility of pipe burst.

[0103] Specifically, about 20 seconds after the compressor is overloaded, the internal temperature of the equipment is basically the same as the temperature of the evaporator coil inside the equipment. Considering the temperature detection accuracy and detection deviation, the preset time can be 10 to 60 seconds.

[0104] In some other exemplary embodiments, the operating coefficient is less than 1.

[0105] Specifically, the operating coefficient can be any number between 0.5 and 0.95.

[0106] In the embodiment, the operating coefficient is less than 1, which ensures that the operating time of the compressor is less than the second duration and the third duration, further shortens the operating time of the compressor, ensures that the compressor will not shut down due to excessive operating time, further controls the number of times the compressor starts and stops due to overload, and reduces the risk of pipe burst.

[0107] In some other exemplary embodiments, the first control unit includes:

[0108] A first control module controls the compressor to stop when the compressor is overloaded;

[0109] The second control module controls the stopped compressor to restart when the difference between the internal temperature of the device and the temperature of the evaporator coil of the internal machine of the device is greater than or equal to a third preset temperature.

[0110] In the described embodiment, when the compressor is overloaded, the compressor is promptly controlled to shut down so that the compressor can be shut down for a period of time for cooling, and then restarted when the difference between the internal temperature of the equipment and the temperature of the evaporator coil of the internal machine of the equipment reaches a third preset temperature, thereby further avoiding pipe bursting.

[0111] Specifically, the third preset temperature is lower than the second preset temperature and higher than the first preset temperature.

[0112] Specifically, the third preset temperature may be 1.1°C.

[0113] In another optional solution, the device further includes:

[0114] an acquisition unit, for acquiring environmental parameters when the compressor is not overloaded, wherein the environmental parameters include environmental temperature and environmental humidity;

[0115] Specifically, the ambient temperature and ambient humidity are collected in real time through sensors installed on the equipment.

[0116] A comparison unit, for comparing the environmental parameters with user-set parameters, wherein the user-set parameters include a user-set temperature and a user-set humidity;

[0117] Specifically, by comparing the environmental parameters with the user-set parameters, it is determined whether the user needs are met.

[0118] a fourth determining unit, which determines the working mode of the device according to the working mode set by the user, wherein the working mode includes a cooling mode, a heating mode and a dehumidification mode;

[0119] a third control unit, which starts the compressor and controls the fan of the device to operate when the device operates in the cooling mode and the ambient temperature is higher than the user-set temperature, and controls the compressor to stop when the device operates in the cooling mode and the ambient temperature is lower than or equal to the user-set temperature;

[0120] Specifically, in cooling mode, when the ambient temperature is higher than the user-set temperature, the control system controls the compressor to start. The compressor compresses the gaseous refrigerant, and then sends it to the condenser for heat dissipation and then enters the evaporator through the capillary tube, making the evaporator cooler. The fan of the equipment blows the indoor air through the evaporator to blow out cold air. When the indoor temperature reaches or is lower than the temperature set by the user, the control system controls the compressor to stop.

[0121] a fourth control unit, which starts the compressor and controls the fan to operate when the device is operating in the heating mode and the ambient temperature is lower than the user-set temperature, and controls the compressor to stop when the device is operating in the heating mode and the ambient temperature is higher than or equal to the user-set temperature;

[0122] Specifically, in heating mode, when the ambient temperature is lower than the user-set temperature, the control system controls the compressor to start, sucking in low-temperature and low-pressure refrigerant gas, which enters the condenser after compression, passes through the throttling device, and enters the evaporator to achieve heating. At the same time, the fan of the equipment blows out the hot air to increase the indoor temperature. When the ambient temperature reaches or exceeds the temperature set by the user, the control system will control the compressor to stop.

[0123] The fifth control unit starts the compressor when the device operates in the dehumidification mode and the ambient humidity is higher than the user-set humidity, and controls the compressor to stop when the device operates in the dehumidification mode and the ambient humidity is lower than the user-set humidity.

[0124] Specifically, in dehumidification mode, when the ambient humidity is higher than the user-set humidity, the control system controls the compressor to start, compresses the refrigerant into high-temperature and high-pressure gas, and then sends it to the condenser through the throttling device and into the evaporator. At the same time, the water vapor in the air condenses into water on the surface of the evaporator and is discharged outdoors, thereby achieving a dehumidification effect. In dehumidification mode, in order to enhance the dehumidification effect, the fan speed of the equipment is usually reduced. When the indoor humidity drops below the humidity set by the user, the control system controls the compressor to stop.

[0125] In the described embodiment, when the compressor is not overloaded, environmental parameters are continuously acquired, compared with the size of the parameters set by the user in real time, and the operating parameters are adjusted in time, so that the environmental parameters meet the parameters set by the user, thereby improving the user experience.

[0126] In another optional solution, the third control unit, the fourth control unit and the fifth control unit all include:

[0127] An acquisition module, for acquiring the evaporator temperature of the device;

[0128] A comparison module, for comparing the evaporator temperature with a preset evaporator temperature;

[0129] a reducing module, for reducing the rotation speed of the fan when the evaporator temperature is lower than or equal to the preset evaporator temperature;

[0130] The increasing module increases the rotation speed of the fan when the evaporator temperature is higher than the preset evaporator temperature.

[0131] In the embodiment, when the evaporator temperature is lower than or equal to the preset evaporator temperature, the fan speed is reduced so that the evaporator can return to temperature as quickly as possible. When the evaporator temperature is higher than the preset evaporator temperature, the fan speed is increased so that the evaporator can dissipate heat faster. The fan speed is adjusted according to the comparison result between the evaporator temperature and the preset evaporator temperature, which helps the evaporator to operate within a suitable temperature range, thereby ensuring the stability of the system.

[0132] In some other exemplary schemes of the present application, the device further includes: a sending unit, when the compressor is overloaded, sending a reminder message to the terminal indicating that the compressor is overloaded. In the embodiment, by outputting the reminder message, the user is notified immediately, so that the user can quickly understand that the current working state of the compressor is abnormal, so as to take corresponding measures. The compressor overload information contained in the reminder message can provide important clues for subsequent fault diagnosis, help technicians quickly locate the problem, and improve maintenance efficiency.

[0133] Specifically, the reminder message can be a shutdown reminder message, such as: "The system is currently operating abnormally and is about to be shut down", which is used to prompt that the device is about to perform a power-off or shutdown process. The reminder message can also be a conversion reminder message, such as: "The system is currently operating abnormally and is about to be converted to safe mode", which is used to prompt that the control of the equipment compressor is about to be intervened.

[0134] The compressor overload protection device includes a processor and a memory, the first control unit, the first determination unit, and the second control unit are all stored in the memory as program units, and the processor executes the program units stored in the memory to implement corresponding functions. The modules are all located in the same processor; or, the modules are located in different processors in any combination.

[0135] The processor includes a kernel, and the kernel retrieves the corresponding program unit from the memory. One or more kernels can be provided, and the problem of a high risk of pipe burst in equipment containing a compressor in the prior art can be at least solved by adjusting kernel parameters.

[0136] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0137] An embodiment of the present invention provides an air conditioner, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include any one of the methods described. When the processor executes the program, at least the following steps are implemented:

[0138] Step S201, when a compressor of a device is overloaded, at least control the compressor to restart, and obtain the number of times the compressor is overloaded, wherein the device includes at least one of an air conditioner and a dehumidifier;

[0139] Specifically, the air conditioner may be a fixed-frequency air conditioner.

[0140] Step S202, when the number of times the compressor is overloaded reaches a preset number, determining that the compressor is faulty;

[0141] Specifically, the preset number is a safety value of the number of times the air conditioner allows the compressor to be overloaded for protection, and is a parameter for determining whether the compressor is faulty. If it is determined that the number of times the compressor is overloaded for protection reaches the preset number, it is determined that the compressor is faulty.

[0142] Step S203: when the compressor fails, at least control the compressor to stop.

[0143] Specifically, the compressor can be forced to stop working by disconnecting the AC contactor of the device. If the device is in cooling mode, the indoor fan of the air conditioner is controlled to start up. If the device is in heating mode, the indoor fan of the device is controlled to stop.

[0144] Optionally, at least controlling the compressor to shut down includes: determining that the duration of the device being in the first predetermined state after powering on is a first duration, the duration of the device being in the second predetermined state after powering on is a second duration, the duration of the compressor being in the second predetermined state after restarting is a third duration, and the duration of the compressor being in the first predetermined state after restarting is a fourth duration, the first predetermined state being a state in which the difference between the internal temperature of the device and the temperature of the evaporator coil of the indoor unit of the device is less than a first preset temperature, the second predetermined state being a state in which the difference is greater than a second preset temperature, and the second preset temperature being greater than the first preset temperature; determining whether the smaller value of the second duration and the third duration is greater than or equal to a preset threshold time; if the smaller value is greater than or equal to the threshold time, controlling the compressor to shut down for a second predetermined time after running for the first predetermined time, the first predetermined time being the product of an operating coefficient and the smaller value, the operating coefficient being a preset coefficient, and the second predetermined time being the larger value of the first duration and the fourth duration; if the smaller value is less than the threshold time, controlling the device to shut down.

[0145] Optionally, before at least controlling the compressor to restart, the method also includes: when the equipment is powered on and running, determining whether the first duration is greater than a preset time; if the first duration is greater than the preset time, determining that the compressor is overloaded, and if the first duration is less than or equal to the preset time, determining that the compressor is not overloaded.

[0146] Optionally, when the compressor is overloaded, at least the compressor is controlled to restart, including: when the compressor is overloaded, the compressor is controlled to stop; when the difference between the internal temperature of the device and the temperature of the evaporator coil of the internal machine of the device is greater than or equal to a third preset temperature, the stopped compressor is controlled to restart.

[0147] Optionally, when the compressor is not overloaded, the method further includes: acquiring environmental parameters, the environmental parameters including ambient temperature and ambient humidity; comparing the environmental parameters with user-set parameters, the user-set parameters including user-set temperature and user-set humidity; determining the working mode of the device according to the working mode set by the user, the working mode including cooling mode, heating mode and dehumidification mode; when the device operates in the cooling mode and the ambient temperature is higher than the user-set temperature, starting the compressor and controlling the fan of the device to operate; when the device operates in the cooling mode and the ambient temperature is lower than or equal to the user-set temperature, controlling the compressor to stop; when the device operates in the heating mode and the ambient temperature is lower than the user-set temperature, starting the compressor and controlling the fan to operate; when the device operates in the heating mode and the ambient temperature is higher than or equal to the user-set temperature, controlling the compressor to stop; when the device operates in the dehumidification mode and the ambient humidity is higher than the user-set humidity, starting the compressor; when the device operates in the dehumidification mode and the ambient humidity is lower than the user-set humidity, controlling the compressor to stop.

[0148] Optionally, controlling the operation of the fan of the device includes: obtaining the evaporator temperature of the device; comparing the evaporator temperature with a preset evaporator temperature; when the evaporator temperature is lower than or equal to the preset evaporator temperature, reducing the speed of the fan; when the evaporator temperature is higher than the preset evaporator temperature, increasing the speed of the fan.

[0149] Optionally, the method further comprises: when the compressor is overloaded, sending a reminder message indicating that the compressor is overloaded to the terminal.

[0150] The devices in this article can be servers, PCs, PADs, mobile phones, etc.

[0151] Obviously, those skilled in the art should understand that the modules or steps of the present invention described above can be implemented by a general-purpose computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than herein, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0152] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0153] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0154] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0155] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0156] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0157] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0158] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0159] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0160] From the above description, it can be seen that the embodiments described in this application achieve the following technical effects:

[0161] 1) The control method of compressor overload protection of the present application first controls the compressor to restart and obtains the number of times the compressor is overloaded; then, when the number of times the compressor is overloaded reaches a preset number, it is determined that the compressor is faulty; finally, when it is determined that the compressor is faulty, at least the compressor is controlled to shut down. The present application obtains the number of overloads of the compressor, and intervenes in the start and stop of the compressor when the number of overloads reaches a preset number, thereby avoiding frequent start and stop of the compressor in a short period of time and reducing the risk of pipe burst.

[0162] 2) The compressor overload protection device of the present application controls the compressor to restart and obtain the number of times the compressor is overloaded through the first control unit; determines that the compressor is faulty when the number of times the compressor is overloaded reaches a preset number through the first determination unit; and at least controls the compressor to stop when the compressor is determined to be faulty through the second control unit. The present application obtains the number of overloads of the compressor and intervenes in the start and stop of the compressor when the number of overloads reaches a preset number, thereby avoiding frequent start and stop of the compressor in a short period of time and reducing the risk of pipe burst.

[0163] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A control method for compressor overload protection, characterized in that: include: In the case where a compressor of a device is overloaded, at least controlling the compressor to restart and obtaining the number of times the compressor is overloaded, wherein the device includes at least one of an air conditioner and a dehumidifier; When the number of times the compressor is overloaded reaches a preset number, determining that the compressor is faulty; In the event of a failure of the compressor, at least the compressor is controlled to stop.

2. The method according to claim 1, characterized in that At least controlling the compressor to stop, comprising: Determine that the duration of the device being in the first predetermined state after being powered on is a first duration, the duration of the device being in the second predetermined state after being powered on is a second duration, the duration of the compressor being in the second predetermined state after being restarted is a third duration, and the duration of the compressor being in the first predetermined state after being restarted is a fourth duration, the first predetermined state is a state in which the difference between the internal temperature of the device and the temperature of the evaporator coil of the indoor unit of the device is less than a first preset temperature, the second predetermined state is a state in which the difference is greater than a second preset temperature, and the second preset temperature is greater than the first preset temperature; Determining whether a smaller value of the second duration and the third duration is greater than or equal to a preset threshold time; When the smaller value is greater than or equal to the threshold time, the compressor is controlled to run for a first predetermined time and then stop for a second predetermined time, wherein the first predetermined time is the product of an operation coefficient and the smaller value, the operation coefficient is a preset coefficient, and the second predetermined time is a larger value between the first duration and the fourth duration; When the smaller value is less than the threshold time, the device is controlled to shut down.

3. The method according to claim 2, characterized in that Before at least controlling the compressor to restart, the method further includes: When the device is powered on and running, determining whether the first duration is greater than a preset time; When the first duration is greater than the preset time, it is determined that the compressor is overloaded; and when the first duration is less than or equal to the preset time, it is determined that the compressor is not overloaded.

4. The method according to claim 2, characterized in that: The operating coefficient is less than 1.

5. The method according to claim 1, characterized in that In the case where the compressor is overloaded, at least controlling the compressor to restart comprises: When the compressor is overloaded, the compressor is controlled to stop; When the difference between the internal temperature of the device and the temperature of the evaporator coil of the internal machine of the device is greater than or equal to a third preset temperature, the stopped compressor is controlled to restart.

6. The method according to any one of claims 1 to 5, characterized in that In the case that the compressor is not overloaded, the method further comprises: Acquiring environmental parameters, wherein the environmental parameters include environmental temperature and environmental humidity; Comparing the environmental parameters with the user-set parameters, wherein the user-set parameters include the user-set temperature and the user-set humidity; Determining the working mode of the device according to the working mode set by the user, wherein the working mode includes a cooling mode, a heating mode and a dehumidification mode; When the device is running in the cooling mode and the ambient temperature is higher than the user-set temperature, the compressor is started and the fan of the device is controlled to run; when the device is running in the cooling mode and the ambient temperature is lower than or equal to the user-set temperature, the compressor is controlled to stop; When the device is running in the heating mode and the ambient temperature is lower than the user-set temperature, the compressor is started and the fan is controlled to operate; when the device is running in the heating mode and the ambient temperature is higher than or equal to the user-set temperature, the compressor is controlled to stop; When the device operates in the dehumidification mode and the ambient humidity is higher than the user-set humidity, the compressor is started; when the device operates in the dehumidification mode and the ambient humidity is lower than the user-set humidity, the compressor is controlled to stop.

7. The method according to claim 6, characterized in that Controlling the operation of the fan of the equipment, including: obtaining an evaporator temperature of the device; comparing the evaporator temperature with a preset evaporator temperature; When the evaporator temperature is lower than or equal to the preset evaporator temperature, reducing the speed of the fan; When the evaporator temperature is higher than the preset evaporator temperature, the rotation speed of the fan is increased.

8. The method according to any one of claims 1 to 5, characterized in that The method further comprises: In the case that the compressor is overloaded, a reminder message indicating that the compressor is overloaded is sent to the terminal.

9. A compressor overload protection device, characterized in that: include: A first control unit is used to at least control the compressor to restart when the compressor of the device is overloaded, and obtain the number of times the compressor is overloaded, wherein the device includes at least one of an air conditioner and a dehumidifier; a determination unit, configured to determine that the compressor fails when the number of times the compressor is overloaded reaches a preset number; The second control unit is used for at least controlling the compressor to stop when a failure occurs in the compressor.

10. An air conditioner, characterized in that: include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include methods for executing any one of claims 1 to 8.

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