Control method of refrigeration equipment and refrigeration equipment

Abstract

The invention discloses a control method of refrigeration equipment and the refrigeration equipment, and belongs to the technical field of refrigeration equipment. The control method of the refrigeration equipment comprises the steps that under the condition that a compressor is in a running state, the actual working temperature, collected by a temperature sensor, corresponding to the refrigeration equipment and the on-off working state of a low-pressure pressure switch are obtained; and based on the actual working temperature and the switch working state, the operation state of the refrigeration equipment is controlled. According to the control method of the refrigeration equipment, fault priority dynamic judgment is achieved, key components can be protected, the conflict between the module temperature and the low-pressure pressure fault when no refrigerant circulates in the refrigeration equipment is solved, and therefore the problem that a compressor is frequently started due to the fact that the pressure fault is not reported is solved, and the service life of the compressor is prolonged. The abrasion frequency and degree of the compressor are reduced, and the reliability and maintenance efficiency of the refrigeration equipment are improved.

Description

Technical Field

[0001] The present application belongs to the technical field of refrigeration equipment, and in particular relates to a control method for refrigeration equipment and refrigeration equipment. Background Art

[0002] Low-pressure protection in refrigeration systems is primarily used to monitor the pressure on the low-pressure side of the refrigeration system (between the evaporator outlet and the compressor inlet) and trigger a protection mechanism when the pressure is abnormal. In related technologies, when the pressure is detected to be below a set threshold, the refrigeration system is shut down. In the absence of refrigerant circulation in the refrigeration system, this method may result in unreported pressure failures, leading to frequent compressor startups, lowering the reliability and maintenance efficiency of the refrigeration system, and increasing the frequency and degree of compressor wear, which can damage the refrigeration system. Summary of the Invention

[0003] The present application aims to solve at least one of the technical problems existing in the related art. To this end, the present application proposes a control method and refrigeration equipment, which realizes dynamic fault priority judgment, can protect key components, and solves the conflict between module temperature and low-pressure pressure failure when there is no refrigerant circulation in the refrigeration equipment, thereby avoiding the problem of frequent compressor startup due to unreported pressure failure, reducing the frequency and degree of compressor wear, and improving the reliability and maintenance efficiency of the refrigeration equipment.

[0004] In a first aspect, the present application provides a control method for a refrigeration device, the refrigeration device comprising a compressor, a low-pressure pressure switch, a temperature sensor, and a controller, the controller being connected to the compressor, the low-pressure pressure switch, and the temperature sensor, respectively; the controller being configured to perform the following method:

[0005] When the compressor is in operation, obtaining the actual operating temperature of the refrigeration equipment and the switch operating state of the low-pressure switch collected by the temperature sensor;

[0006] Based on the actual operating temperature and the switch operating state, the operating state of the refrigeration device is controlled.

[0007] According to the control method of the refrigeration equipment provided in the embodiment of the present application, the actual working temperature of the refrigeration equipment during the operation of the compressor and the switch working status of the low-pressure pressure switch are detected, so as to combine the actual working temperature and the switch working status to jointly control the operating status of the refrigeration equipment, realize dynamic judgment of fault priority, protect key components, and solve the conflict between module temperature and low-pressure pressure failure when there is no refrigerant circulation in the refrigeration equipment, thereby avoiding the problem of frequent startup of the compressor due to unreported pressure failure, reducing the number and degree of wear of the compressor, and improving the reliability and maintenance efficiency of the refrigeration equipment.

[0008] In one embodiment of the present application, a method for controlling a refrigeration device, wherein the method controls the operating state of the refrigeration device based on the actual operating temperature and the switch operating state, includes:

[0009] When it is detected that the switch is in the disconnected state, the continuous operation time of the compressor is obtained; wherein, when the pressure between the outlet of the evaporator and the inlet of the compressor in the refrigeration equipment is less than the target pressure threshold, the low-pressure switch is in the disconnected state;

[0010] Based on the continuous operation time and the actual operating temperature, the operating state of the refrigeration equipment is controlled.

[0011] In one embodiment of the present application, a method for controlling a refrigeration device, wherein the method controls the operating state of the refrigeration device based on the continuous operating time and the actual operating temperature, includes:

[0012] When it is detected that the actual operating temperature is lower than the target temperature threshold, after the continuous operation time is greater than or equal to a first time period, controlling the refrigeration device to stop operating;

[0013] During a period in which the continuous operation time is less than the first time, when it is detected that the actual operating temperature is greater than or equal to the target temperature threshold, the refrigeration device is controlled to stop operating.

[0014] A control method for a refrigeration device according to an embodiment of the present application, wherein, when detecting that the actual operating temperature is lower than a target temperature threshold, the refrigeration device is controlled to stop operating after the continuous operating time is greater than or equal to a first time period, includes:

[0015] When it is detected that the actual operating temperature is lower than the target temperature threshold and it is detected that the time for the low-pressure pressure switch to maintain the disconnected state is greater than or equal to the second time, the refrigeration equipment is controlled to stop running after the continuous operation time is greater than or equal to the first time; the second time is less than the first time.

[0016] In one embodiment of the present application, a method for controlling a refrigeration device, wherein the method controls the operating state of the refrigeration device based on the actual operating temperature and the switch operating state, includes:

[0017] Obtaining the number of failures of the low-pressure switch corresponding to a third time period;

[0018] When the number of failures is greater than or equal to a target number threshold, the refrigeration equipment is locked.

[0019] In a control method for a refrigeration device according to an embodiment of the present application, obtaining the number of failures of the low-pressure switch within a third time period includes:

[0020] During the third time period, when the refrigeration equipment is controlled to stop operating based on the actual operating temperature and the switch operating state, the number of faults corresponding to the low-pressure switch is increased by one.

[0021] In a second aspect, the present application provides a refrigeration device, comprising:

[0022] compressor;

[0023] Low pressure switch;

[0024] Temperature sensor;

[0025] A controller is connected to the compressor, the low-pressure switch and the temperature sensor respectively, and is used to execute the control method of the refrigeration equipment as described in the first aspect.

[0026] According to the refrigeration equipment provided in the embodiment of the present application, the actual operating temperature of the refrigeration equipment during the operation of the compressor and the switch working status of the low-pressure pressure switch are detected, so as to combine the actual operating temperature and the switch working status to jointly control the operating status of the refrigeration equipment, thereby realizing dynamic judgment of fault priority, being able to protect key components, and solving the conflict between module temperature and low-pressure pressure failure when there is no refrigerant circulation in the refrigeration equipment, thereby avoiding the problem of frequent startup of the compressor due to unreported pressure failure, reducing the number and degree of wear of the compressor, and improving the reliability and maintenance efficiency of the refrigeration equipment.

[0027] In a third aspect, the present application provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the control method for the refrigeration equipment as described in the first aspect above is implemented.

[0028] In a fourth aspect, the present application provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the control method for the refrigeration equipment as described in the first aspect above.

[0029] In a fifth aspect, the present application provides a computer program product, comprising a computer program, which, when executed by a processor, implements the control method for the refrigeration equipment as described in the first aspect above.

[0030] The above one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

[0031] By detecting the actual operating temperature of the refrigeration equipment during the operation of the compressor and the switch working status of the low-pressure pressure switch, the operating status of the refrigeration equipment is jointly controlled in combination with the actual operating temperature and the switch working status, thereby realizing dynamic judgment of fault priority, protecting key components, and solving the conflict between module temperature and low-pressure pressure failure when there is no refrigerant circulation in the refrigeration equipment, thereby avoiding the problem of frequent startup of the compressor due to unreported pressure failure, reducing the number and degree of compressor wear, and improving the reliability and maintenance efficiency of the refrigeration equipment.

[0032] Furthermore, by judging the low-pressure protection after the compressor has run for a full first period of time, and when it is determined that the low-pressure pressure switch is in the disconnected state and maintains the disconnected state for greater than or equal to the second period of time, a low-pressure protection prompt is given, so that the controller can control the refrigeration equipment to stop running in response to the prompt information. By setting dynamic delay protection, the low-pressure protection is judged after the refrigerant circulation is basically stable, which can avoid misjudgment during the transition period of the compressor operation, reduce the false triggering rate of the low-pressure protection of the refrigeration system, and improve the reliability of the refrigeration equipment.

[0033] Furthermore, the number of failures of the low-pressure pressure switch is counted through a rolling time window, and when it is detected within the third time period that the number of failures of the low-pressure pressure switch is greater than or equal to the target number threshold, the refrigeration equipment can be locked. By setting up an intelligent locking mechanism, frequent restarts of the refrigeration equipment are avoided and the risk of equipment damage is reduced.

[0034] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0036] Figure 1 This is one of the flow charts of the control method of the refrigeration equipment provided in the embodiment of the present application;

[0037] Figure 2 This is the second flow chart of the control method of the refrigeration equipment provided in the embodiment of the present application;

[0038] Figure 3 is a schematic structural diagram of a control device for a refrigeration device provided in an embodiment of the present application;

[0039] Figure 4 It is a structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are 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 are within the scope of protection of this application.

[0041] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0042] The following, in conjunction with the accompanying drawings, describes in detail the control method for refrigeration equipment, the control device for refrigeration equipment, the electronic device, and the readable storage medium provided in the embodiments of the present application through specific embodiments and their application scenarios.

[0043] The control method for the refrigeration equipment may be applied to a terminal, and may be specifically executed by hardware or software in the terminal.

[0044] The terminal includes, but is not limited to, a portable communication device such as a mobile phone or tablet computer having a touch-sensitive surface (e.g., a touch screen display and / or a touch pad). It should also be understood that, in some embodiments, the terminal may not be a portable communication device, but a desktop computer having a touch-sensitive surface (e.g., a touch screen display and / or a touch pad).

[0045] In the following embodiments, a terminal including a display and a touch-sensitive surface is described. However, it should be understood that the terminal may include one or more other physical user interface devices such as a physical keyboard, a mouse, and a joystick.

[0046] The control method for a refrigeration device provided in an embodiment of the present application may be executed by an electronic device or a functional module or functional entity in the electronic device that can implement the control method for the refrigeration device. The electronic devices mentioned in the embodiment of the present application include but are not limited to mobile phones, tablet computers, computers, cameras, and wearable devices. The control method for a refrigeration device provided in an embodiment of the present application is described below using an electronic device as an example of the execution entity.

[0047] like Figure 1As shown, the control method of the refrigeration equipment includes: step 110 and step 120.

[0048] It should be noted that the refrigeration equipment may include a wall-mounted air conditioner, a floor-standing air conditioner, a central air conditioner or a window air conditioner, etc.

[0049] The refrigeration equipment may include a compressor, a low pressure switch, a temperature sensor, and a controller.

[0050] The controller is connected with the compressor, the low-pressure switch and the temperature sensor respectively.

[0051] The compressor maintains the high pressure by compressing the refrigerant.

[0052] The low pressure switch can be used to monitor the refrigerant circuit pressure and prevent the compressor from running under low pressure (such as refrigerant leakage).

[0053] Temperature sensors can be used to monitor ambient temperature or the temperature of key parts and provide feedback signals.

[0054] The number of temperature sensors may include one or more, which is not limited in this application.

[0055] The controller can be used to execute the following methods:

[0056] Step 110: When the compressor is in operation, obtain the actual operating temperature of the refrigeration equipment and the switch operating state of the low-pressure switch collected by the temperature sensor;

[0057] In this step, the operation stages of the compressor may include a startup stage, a low-temperature heating stage, and a refrigerant heat dissipation stage.

[0058] For example, during the refrigerant heat dissipation stage, if the refrigerant pressure is too low, the low pressure switch may be triggered.

[0059] Whether the compressor is in the running state may be detected by a hardware signal. For example, the compressor driving signal (such as the closing state of a relay) may be monitored by a controller.

[0060] Temperature sensors can be installed in key parts of the refrigeration equipment (such as around the evaporator, condenser or compressor). For example, temperature sensors can be set around the compressor and around the fan to collect the actual operating temperature of the compressor module and the actual operating temperature of the fan module respectively.

[0061] The low pressure switch is used to detect whether the refrigerant pressure in the refrigeration system is too low. When the pressure is lower than the set value, the switch will trigger to protect the compressor from damage.

[0062] The state of the low-pressure pressure switch can be a digital signal (on or off), and the switch working state of the low-pressure pressure switch can be read through a pin or other digital interface.

[0063] The switch operating state may also include the duration of the low-pressure protection being closed, or the duration of the low-pressure pressure switch being disconnected.

[0064] Step 120: Control the operating state of the refrigeration equipment based on the actual operating temperature and the switch operating state.

[0065] In this step, the operating state of the refrigeration equipment may include a standby state, an operating state, a protective shutdown, and a fault lockout.

[0066] By detecting the actual working temperature, it can be determined whether the module temperature protection is triggered. When the module temperature protection is triggered, it can be determined that the module temperature protection takes precedence over the low-pressure protection, so that the operating status of the refrigeration equipment can be controlled in combination with the switch working status.

[0067] For example, when the actual operating temperature is too high, it is determined whether the low-pressure switch is in the disconnected state, and when it is detected that the low-pressure switch is disconnected, the refrigeration equipment can be controlled to shut down.

[0068] According to the control method of the refrigeration equipment provided in the embodiment of the present application, the actual working temperature of the refrigeration equipment during the operation of the compressor and the switch working status of the low-pressure pressure switch are detected, so as to combine the actual working temperature and the switch working status to jointly control the operating status of the refrigeration equipment, realize dynamic judgment of fault priority, protect key components, and solve the conflict between module temperature and low-pressure pressure failure when there is no refrigerant circulation in the refrigeration equipment, thereby avoiding the problem of frequent startup of the compressor due to unreported pressure failure, reducing the number and degree of wear of the compressor, and improving the reliability and maintenance efficiency of the refrigeration equipment.

[0069] In some embodiments, step 120 may include:

[0070] When it is detected that the switch working state is the disconnected state, obtaining the continuous operation time of the compressor;

[0071] Control the operating status of the cooling equipment based on the continuous operation time and actual operating temperature.

[0072] In this embodiment, the continuous operation time of the compressor is the time from the start of the compressor to the current sampling time.

[0073] When the compressor is started, a timer may start timing, wherein the timer may include a hardware timer or a system clock.

[0074] At the current sampling moment, the timer value can be obtained and determined as the continuous operation time of the compressor.

[0075] The switch operating state of the low-pressure pressure switch may include a closed state or an open state, wherein when the pressure on the low-pressure side of the refrigeration equipment is less than the target pressure threshold, the low-pressure pressure switch is in the open state.

[0076] The pressure on the low-pressure side is the pressure between the evaporator outlet and the compressor inlet.

[0077] The target pressure threshold value may be any value between 0.2 and 0.5 MPa, or may be other values, and may be user-defined, and is not limited in this application.

[0078] When the low-pressure switch detects that the pressure on the low-pressure side is lower than the target pressure threshold, the low-pressure switch will automatically disconnect.

[0079] When it is detected that the switch operating state is the off state, the continuous operation time of the compressor can be obtained to jointly control the operating state of the refrigeration equipment based on the continuous operation time and the actual operating temperature of the refrigeration equipment.

[0080] In some embodiments, controlling the operating state of the refrigeration equipment based on the continuous operating time and the actual operating temperature may include:

[0081] When it is detected that the actual operating temperature is lower than the target temperature threshold, the refrigeration device is controlled to stop operating after the continuous operating time is greater than or equal to the first time period;

[0082] During a period in which the continuous operation time is less than the first time period, when it is detected that the actual operating temperature is greater than or equal to the target temperature threshold, the refrigeration device is controlled to stop operating.

[0083] In this embodiment, the actual operating temperature may include the actual operating temperature of the compressor module and the actual operating temperature of the fan module.

[0084] The target temperature threshold may include a temperature threshold corresponding to the compressor module and a temperature threshold corresponding to the fan module.

[0085] The temperature threshold value corresponding to the compressor module may be 85° C., or other values, which are not limited in this application.

[0086] The temperature threshold value corresponding to the fan module can be 95°C, or other values, which are not limited in this application.

[0087] The first duration may be 300s, or other values, which are not limited in this application.

[0088] When the compressor has run for the full first period of time, the refrigerant circulation is basically stable, and the low-pressure protection can be determined after the compressor has run for the full first period of time.

[0089] By setting the first time length for dynamic delay protection, when the compressor runs for the full first time length, the low-pressure protection prompt is triggered to control the refrigeration equipment to stop running, solving the problem of false triggering of low-pressure protection caused by unstable pressure during the compressor startup phase under low-temperature heating conditions.

[0090] During the first period of compressor operation, if it is detected that the actual operating temperature is greater than or equal to the target temperature threshold, the delay protection can be canceled and the refrigeration equipment can be controlled to stop operating.

[0091] In the actual implementation process, Figure 2 As shown, when the low-pressure switch is in the disconnected state, it is possible to detect whether the continuous operation time of the compressor is greater than or equal to 5 minutes. If it is determined that the continuous operation time of the compressor is greater than or equal to 5 minutes, the compressor can be controlled to stop running.

[0092] If the continuous operation time of the compressor is determined to be less than 5 minutes, it can be detected whether a module temperature protection fault occurs;

[0093] For example, it is possible to detect whether the actual operating temperature of the refrigeration equipment is greater than or equal to the target temperature threshold. If the actual operating temperature of the refrigeration equipment is greater than or equal to the target temperature threshold, it can be determined that a module temperature protection failure has occurred and the compressor can be controlled to stop running.

[0094] In some embodiments, when it is detected that the actual operating temperature is less than the target temperature threshold, controlling the refrigeration device to stop operating after the continuous operating time is greater than or equal to a first time period may include:

[0095] When it is detected that the actual operating temperature is lower than the target temperature threshold and it is detected that the low-pressure switch maintains the disconnected state for a time period greater than or equal to the second time period, the refrigeration equipment is controlled to stop running after the continuous operation time period is greater than or equal to the first time period.

[0096] In this embodiment, the switch operating state corresponding to the low-pressure pressure switch may include the time length for which the low-pressure pressure switch maintains a closed state or an open state.

[0097] When the compressor runs for a full first period of time, the low-pressure switch is in the disconnected state, and maintains the disconnected state for greater than or equal to a second period of time, a low-pressure protection prompt may be given. The controller may control the refrigeration equipment to stop running in response to the low-pressure protection prompt information.

[0098] Among them, the second duration is smaller than the first duration, and the second duration can be 10s, or can be other values, which is not limited in this application.

[0099] According to the control method of the refrigeration equipment provided in the embodiment of the present application, the low-pressure pressure protection is judged after the compressor has run for a full first period of time. When it is determined that the low-pressure pressure switch is in the disconnected state and maintains the disconnected state for greater than or equal to the second period of time, the low-pressure pressure protection is prompted, so that the controller can control the refrigeration equipment to stop running in response to the prompt information. By setting dynamic delay protection, the low-pressure pressure protection is judged after the refrigerant circulation is basically stable, which can avoid misjudgment during the transition period of the compressor operation, reduce the false triggering rate of the low-pressure protection of the refrigeration system, and improve the reliability of the refrigeration equipment.

[0100] In some embodiments, step 120 may include:

[0101] Obtaining the number of failures of the low-pressure switch corresponding to the third time period;

[0102] When the number of failures is greater than or equal to the target number threshold, the cooling device is locked.

[0103] In this embodiment, the third duration is greater than the first duration. The third duration may be 25 minutes or 30 minutes, or may be other values, which are not limited in this application.

[0104] In the event that the low pressure protection shutdown is triggered, it can be determined that the low pressure switch is faulty.

[0105] For example, the number of failures of the low-pressure pressure switch may be obtained every 30 minutes, and then the operating state of the refrigeration equipment may be controlled based on the number of failures of the low-pressure pressure switch within 30 minutes.

[0106] The target number threshold value may be 4 or 5 times, or other values, which are not limited in this application.

[0107] For example, the third time period may be set to 30 minutes, and the target number threshold may be set to 4 times. If the low-pressure switch fails 5 times within 30 minutes, the refrigeration equipment may be locked.

[0108] The cooling unit can be locked out due to a low pressure fault and will not be started again.

[0109] In some embodiments, before locking the refrigeration device, when it is detected that the low-pressure switch is updated from an open state to a closed state, the low-pressure protection may be released and the refrigeration device may be restarted.

[0110] like Figure 2As shown, when it is detected that the number of failures of the low-pressure switch within the third time period is less than the target number threshold, the low-pressure switch failure can be cancelled.

[0111] In this application, before locking, the protection can be released after the low pressure protection is restored, and the refrigeration system can be restarted, avoiding the reliance on manual reset due to frequent fault locking.

[0112] In some embodiments, obtaining the number of failures of the low-pressure switch within the third time period may include:

[0113] During the third time period, when the refrigeration equipment is controlled to stop operating based on the actual operating temperature and the switch operating state, the number of faults corresponding to the low-pressure switch is increased by one.

[0114] In this embodiment, at each shutdown, it may be checked whether the shutdown is caused by the low-pressure switch being disconnected and whether the shutdown is within the third time period.

[0115] The timestamp of each fault can be recorded, and when a new fault occurs, it can be checked whether it is within the last third period.

[0116] When it is determined that a new fault occurs within the third time period, the number of faults is increased by one and stored in the memory.

[0117] like Figure 2 As shown, when it is detected that the low-pressure pressure switch is disconnected, it can be further determined whether the continuous disconnection time of the low-pressure pressure switch is greater than or equal to 10s. When it is determined that the continuous disconnection time of the low-pressure pressure switch is greater than or equal to 10s, it can be determined whether the continuous operation time of the compressor is greater than or equal to 5 minutes. When the continuous operation time of the compressor is greater than or equal to 5 minutes, the refrigeration equipment can be controlled to stop running, and the number of failures of the low-pressure pressure switch can be increased by one.

[0118] When the continuous operation time of the compressor is less than 5 minutes, that is, within 5 minutes after the compressor is started, it is detected that the actual operating temperature of the refrigeration equipment is greater than or equal to the target temperature threshold, and it is determined that a module temperature protection failure has occurred, the refrigeration equipment can be controlled to stop running, and the low-pressure pressure protection is considered to be triggered, and the number of failures of the low-pressure pressure switch is increased by one.

[0119] According to the control method of the refrigeration equipment provided in the embodiment of the present application, the number of failures of the low-pressure pressure switch is counted through a rolling time window, and when it is detected within a third time period that the number of failures of the low-pressure pressure switch is greater than or equal to the target number threshold, the refrigeration equipment can be locked. By setting an intelligent locking mechanism, frequent restarts of the refrigeration equipment are avoided and the risk of equipment damage is reduced.

[0120] The control device of the refrigeration equipment provided in the present application is described below. The control device of the refrigeration equipment described below and the control method of the refrigeration equipment described above can be referenced to each other.

[0121] The control method for refrigeration equipment provided in the embodiment of the present application can be executed by a control device of the refrigeration equipment. In the embodiment of the present application, the control device of the refrigeration equipment executing the control method for refrigeration equipment is used as an example to illustrate the control device of the refrigeration equipment provided in the embodiment of the present application.

[0122] An embodiment of the present application also provides a control device for refrigeration equipment.

[0123] like Figure 3 As shown, the control device of the refrigeration equipment includes a compressor, a low-pressure pressure switch, a temperature sensor and a controller, and the controller is connected to the compressor, the low-pressure pressure switch and the temperature sensor respectively; the control device of the refrigeration equipment includes: a first processing module 310 and a second processing module 320.

[0124] The first processing module 310 is configured to obtain, when the compressor is in operation, the actual operating temperature of the refrigeration equipment and the switch operating state of the low-pressure switch collected by the temperature sensor;

[0125] The second processing module 320 is configured to control the operating state of the refrigeration equipment based on the actual operating temperature and the switch operating state.

[0126] According to the control device of the refrigeration equipment provided in the embodiment of the present application, the actual operating temperature of the refrigeration equipment during the operation of the compressor and the switch working status of the low-pressure pressure switch are detected, so as to combine the actual operating temperature and the switch working status to jointly control the operating status of the refrigeration equipment, realize dynamic judgment of fault priority, protect key components, and solve the conflict between module temperature and low-pressure pressure failure when there is no refrigerant circulation in the refrigeration equipment, thereby avoiding the problem of frequent startup of the compressor due to unreported pressure failure, reducing the number and degree of wear of the compressor, and improving the reliability and maintenance efficiency of the refrigeration equipment.

[0127] In some embodiments, the second processing module 320 may also be configured to:

[0128] When the switch is detected to be in the disconnected state, the continuous operation time of the compressor is obtained; wherein, when the pressure between the outlet of the evaporator and the inlet of the compressor in the refrigeration equipment is less than the target pressure threshold, the low pressure switch is in the disconnected state;

[0129] Control the operating status of the cooling equipment based on the continuous operation time and actual operating temperature.

[0130] In some embodiments, the second processing module 320 may also be configured to:

[0131] When it is detected that the actual operating temperature is lower than the target temperature threshold, the refrigeration device is controlled to stop operating after the continuous operating time is greater than or equal to the first time period;

[0132] During a period in which the continuous operation time is less than the first time period, when it is detected that the actual operating temperature is greater than or equal to the target temperature threshold, the refrigeration device is controlled to stop operating.

[0133] In some embodiments, the second processing module 320 may also be configured to:

[0134] When it is detected that the actual operating temperature is lower than the target temperature threshold and it is detected that the low-pressure pressure switch remains in the disconnected state for a period greater than or equal to the second period, the refrigeration equipment is controlled to stop running after the continuous operation period is greater than or equal to the first period; the second period is less than the first period.

[0135] In some embodiments, the second processing module 320 may also be configured to:

[0136] Obtaining the number of failures of the low-pressure switch corresponding to the third time period;

[0137] When the number of failures is greater than or equal to the target number threshold, the cooling device is locked.

[0138] In some embodiments, the second processing module 320 may also be configured to:

[0139] During the third time period, when the refrigeration equipment is controlled to stop operating based on the actual operating temperature and the switch operating state, the number of faults corresponding to the low-pressure switch is increased by one.

[0140] The control device of the refrigeration equipment in the embodiment of the present application can be an electronic device or a component in the electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices other than a terminal. For example, the electronic device can be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a personal digital assistant (PDA), etc. It can also be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine or a self-service machine, etc., and the embodiment of the present application does not specifically limit it.

[0141] The control device of the refrigeration equipment in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0142] The control device of the refrigeration equipment provided in the embodiment of the present application can achieve Figures 1 to 2 To avoid repetition, the various processes implemented in the method embodiment are not described here.

[0143] In some embodiments, as Figure 4 As shown, an embodiment of the present application further provides an electronic device 400, including a processor 401, a memory 402, and a computer program stored in the memory 402 and executable on the processor 401. When the program is executed by the processor 401, each process of the control method embodiment of the above-mentioned refrigeration equipment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0144] It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.

[0145] In some embodiments, the present application also provides a refrigeration device, including: a compressor, a low-pressure pressure switch, a temperature sensor and a controller.

[0146] In this embodiment, the controller is connected to the compressor, the low-pressure switch and the temperature sensor respectively.

[0147] The compressor maintains the high pressure by compressing the refrigerant.

[0148] The low pressure switch can be used to monitor the refrigerant circuit pressure and prevent the compressor from running under low pressure (such as refrigerant leakage).

[0149] Temperature sensors can be used to monitor ambient temperature or the temperature of key parts and provide feedback signals.

[0150] The number of temperature sensors may include one or more, which is not limited in this application.

[0151] For example, temperature sensors may be provided around the compressor and around the fan to respectively collect the actual operating temperature of the compressor module and the actual operating temperature of the fan module.

[0152] The controller is used to execute the control method of the refrigeration equipment as described in any of the above embodiments.

[0153] According to the refrigeration equipment provided in the embodiment of the present application, the actual operating temperature of the refrigeration equipment during the operation of the compressor and the switch working status of the low-pressure pressure switch are detected, so as to combine the actual operating temperature and the switch working status to jointly control the operating status of the refrigeration equipment, thereby realizing dynamic judgment of fault priority, being able to protect key components, and solving the conflict between module temperature and low-pressure pressure failure when there is no refrigerant circulation in the refrigeration equipment, thereby avoiding the problem of frequent startup of the compressor due to unreported pressure failure, reducing the number and degree of wear of the compressor, and improving the reliability and maintenance efficiency of the refrigeration equipment.

[0154] On the other hand, the present application also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the various processes of the above-mentioned control method embodiment of the refrigeration equipment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0155] On the other hand, the present application also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, it is implemented to perform the various processes of the above-mentioned control method embodiment of the refrigeration equipment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0156] On the other hand, an embodiment of the present application further provides a chip, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned control method embodiment of the refrigeration equipment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0157] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0158] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0159] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, or of course, by hardware. Based on this understanding, the above technical solution, in essence, or the part that contributes to the relevant technology, can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or certain parts of the embodiments.

[0160] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for controlling a refrigeration device, characterized in that: The refrigeration equipment includes a compressor, a low-pressure pressure switch, a temperature sensor, and a controller, wherein the controller is connected to the compressor, the low-pressure pressure switch, and the temperature sensor respectively; the controller is used to perform the following method: When the compressor is in operation, obtaining the actual operating temperature of the refrigeration equipment and the switch operating state of the low-pressure switch collected by the temperature sensor; Based on the actual operating temperature and the switch operating state, the operating state of the refrigeration device is controlled.

2. The control method for refrigeration equipment according to claim 1, characterized in that: The controlling the operating state of the refrigeration device based on the actual operating temperature and the switch operating state includes: When it is detected that the switch is in the disconnected state, the continuous operation time of the compressor is obtained; wherein, when the pressure between the outlet of the evaporator and the inlet of the compressor in the refrigeration equipment is less than the target pressure threshold, the low-pressure switch is in the disconnected state; Based on the continuous operation time and the actual operating temperature, the operating state of the refrigeration equipment is controlled.

3. The control method for refrigeration equipment according to claim 2, characterized in that: The controlling the operating state of the refrigeration equipment based on the continuous operating time and the actual operating temperature includes: When it is detected that the actual operating temperature is lower than the target temperature threshold, after the continuous operation time is greater than or equal to a first time period, controlling the refrigeration device to stop operating; During a period in which the continuous operation time is less than the first time, when it is detected that the actual operating temperature is greater than or equal to the target temperature threshold, the refrigeration device is controlled to stop operating.

4. The control method for refrigeration equipment according to claim 3, characterized in that: The step of controlling the refrigeration device to stop operating after detecting that the actual operating temperature is lower than the target temperature threshold and the continuous operating time is greater than or equal to a first time period includes: When it is detected that the actual operating temperature is lower than the target temperature threshold and it is detected that the time for the low-pressure pressure switch to maintain the disconnected state is greater than or equal to the second time, the refrigeration equipment is controlled to stop running after the continuous operation time is greater than or equal to the first time; the second time is less than the first time.

5. The control method for refrigeration equipment according to any one of claims 1 to 4, characterized in that: The controlling the operating state of the refrigeration device based on the actual operating temperature and the switch operating state includes: Obtaining the number of failures of the low-pressure switch corresponding to a third time period; When the number of failures is greater than or equal to a target number threshold, the refrigeration equipment is locked.

6. The control method for refrigeration equipment according to claim 5, characterized in that: The obtaining of the number of failures of the low-pressure switch corresponding to the third time period includes: During the third time period, when the refrigeration equipment is controlled to stop operating based on the actual operating temperature and the switch operating state, the number of faults corresponding to the low-pressure switch is increased by one.

7. A refrigeration device, characterized in that: include: compressor; Low pressure switch; Temperature sensor; A controller, wherein the controller is connected to the compressor, the low-pressure switch and the temperature sensor respectively, and the controller is used to execute the control method of the refrigeration equipment according to any one of claims 1 to 6.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the control method for the refrigeration equipment according to any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the control method for the refrigeration equipment according to any one of claims 1 to 6 is implemented.

10. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the control method for the refrigeration equipment according to any one of claims 1 to 6 is implemented.

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