Solenoid valve control method and device, electrical equipment and computer readable storage medium

Abstract

The present disclosure discloses a solenoid valve control method and device, electrical equipment and computer-readable storage medium. The solenoid valve control method includes: controlling the opening and closing of the expansion tank by controlling the switch of the solenoid valve, wherein the solenoid valve and the expansion tank are arranged between the low-temperature compressor and the evaporator of the electrical equipment; controlling the amount of refrigerant of the system by controlling the opening and closing of the expansion tank, wherein the switch of the control solenoid valve includes: obtaining the temperature in the box; judging whether the system is powered on for the first time; and controlling the solenoid valve accordingly according to whether the system is powered on for the first time and the temperature in the box. The present disclosure adds a solenoid valve and an expansion tank between the low-temperature compressor and the evaporator, and the amount of refrigerant of the expansion tank system can be controlled by the solenoid valve. The opening and closing of the expansion tank can be controlled, and the exhaust pressure of the low-temperature compressor is reduced by adjusting the amount of refrigerant when the compressor is started, and the risk of the low-temperature compressor tripping is avoided while the frequency is quickly increased.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electrical equipment control, and in particular to a solenoid valve control method and device, electrical equipment, and a computer-readable storage medium. Background Art

[0002] Related technology: Medical low-temperature refrigerators use a two-stage compressor, namely a high-temperature compressor and a low-temperature compressor. During the startup of the low-temperature compressor, if the amount of refrigerant in the system is too large, the exhaust pressure of the low-temperature compressor will be too high, or even the compressor will trip. Summary of the invention

[0003] The present disclosure provides a solenoid valve control method and device, electrical equipment and computer-readable storage medium, in which a solenoid valve and an expansion tank are added between a low-temperature compressor and an evaporator, the expansion tank controls the amount of refrigerant in the system, and the solenoid valve controls the opening and closing of the expansion tank, thereby reducing the exhaust pressure of the low-temperature compressor by adjusting the amount of refrigerant when the compressor is started.

[0004] According to one aspect of the present disclosure, a solenoid valve control method is provided, comprising:

[0005] By controlling the switch of the solenoid valve, the expansion tank is controlled to be opened and closed, wherein the solenoid valve and the expansion tank are arranged between the low-temperature compressor and the evaporator of the electrical equipment;

[0006] By controlling the opening and closing of the expansion tank, the amount of refrigerant in the system is controlled.

[0007] In some embodiments of the present disclosure, the switch of the control solenoid valve includes:

[0008] Get the temperature inside the box;

[0009] According to the temperature inside the box, the solenoid valve is controlled accordingly;

[0010] Wherein, controlling the solenoid valve accordingly according to the temperature in the box includes:

[0011] Determine whether the system is powered on for the first time;

[0012] When the system is powered on for the first time, determining whether the temperature inside the box is greater than or equal to a first temperature threshold inside the box;

[0013] When the temperature inside the box is greater than or equal to a first temperature threshold inside the box, controlling the solenoid valve according to a first mode;

[0014] When the temperature inside the box is lower than the first temperature threshold inside the box, the solenoid valve is controlled in the second mode.

[0015] In some embodiments of the present disclosure, controlling the solenoid valve according to the first mode includes:

[0016] Determine whether the current number of times the solenoid valve is turned on and off is less than a first number threshold;

[0017] If the current number of times the solenoid valve is turned on and off is not less than the first number threshold, the solenoid valve is closed, and then the step of determining whether the system is powered on for the first time is re-executed;

[0018] When the current number of solenoid valve on-off times is less than the first quantity threshold, the solenoid valve is controlled to be on and off once in a manner of opening for a first predetermined opening time and stopping for a first predetermined stopping time, and the number of on-off times is accumulated, and then the step of determining whether the system is powered on for the first time is re-executed.

[0019] In some embodiments of the present disclosure, controlling the solenoid valve accordingly according to whether the system is powered on for the first time and the temperature in the box includes:

[0020] When the system is not powered on for the first time, the solenoid valve is controlled according to the second mode.

[0021] In some embodiments of the present disclosure, controlling the solenoid valve according to the second mode includes:

[0022] Determine whether the temperature inside the box is greater than or equal to a second temperature threshold inside the box, wherein the second temperature threshold inside the box is less than the first temperature threshold inside the box;

[0023] When the temperature inside the box is greater than or equal to the second temperature threshold inside the box, determining whether the low-temperature compressor has been started and is running at a target speed;

[0024] When the low-temperature compressor has been started and is running at the target speed, record the continuous running time of the low-temperature compressor;

[0025] Get the ambient temperature and exhaust temperature sensor status;

[0026] According to the continuous running time of the low-temperature compressor, the ambient temperature and the state of the exhaust temperature sensing package, the solenoid valve is controlled to enter the power-on process control mode, and the solenoid valve is controlled according to the power-on process control mode.

[0027] In some embodiments of the present disclosure, controlling the solenoid valve to enter the power-on process control mode according to the continuous operation time of the low-temperature compressor, the ambient temperature and the exhaust temperature sensing package state, and controlling the solenoid valve according to the power-on process control mode includes at least one of the following steps:

[0028] When the ambient temperature is greater than or equal to the first ambient temperature threshold and the exhaust temperature sensing package is normal, determine whether the continuous operation time of the low-temperature compressor is greater than or equal to the first predetermined time; when the continuous operation time of the low-temperature compressor is greater than or equal to the first predetermined time, control the solenoid valve to enter the power-on process control mode, and control the solenoid valve according to the power-on process control mode;

[0029] When the ambient temperature is greater than or equal to the first ambient temperature threshold and the exhaust temperature sensing package is abnormal, determine whether the continuous operation time of the low-temperature stage compressor is greater than or equal to the second predetermined time, wherein the second predetermined time is greater than the first predetermined time; when the continuous operation time of the low-temperature stage compressor is greater than or equal to the second predetermined time, control the solenoid valve to enter the power-on process control mode, and control the solenoid valve according to the power-on process control mode.

[0030] In some embodiments of the present disclosure, controlling the solenoid valve to enter the power-on process control mode according to the continuous operation time of the low-temperature compressor, the ambient temperature and the exhaust temperature sensing package state, and controlling the solenoid valve according to the power-on process control mode further includes at least one of the following steps:

[0031] When the ambient temperature is less than the first ambient temperature threshold and greater than or equal to the second ambient temperature threshold, and the exhaust temperature sensing package is normal, determine whether the continuous operation time of the low-temperature compressor is greater than or equal to the third predetermined time, wherein the second ambient temperature threshold is less than the first ambient temperature threshold, and the third predetermined time is less than the first predetermined time; when the continuous operation time of the low-temperature compressor is greater than or equal to the third predetermined time, control the solenoid valve to enter the power-on process control mode, and control the solenoid valve according to the power-on process control mode;

[0032] When the ambient temperature is lower than the first ambient temperature threshold and greater than or equal to the second ambient temperature threshold and the exhaust temperature sensing package is abnormal, determine whether the continuous operation time of the low-temperature stage compressor is greater than or equal to a fourth predetermined time, wherein the fourth predetermined time is less than the second predetermined time and the fourth predetermined time is greater than the third predetermined time; when the continuous operation time of the low-temperature stage compressor is greater than or equal to the fourth predetermined time, control the solenoid valve to enter the power-on process control mode, and control the solenoid valve according to the power-on process control mode.

[0033] In some embodiments of the present disclosure, controlling the solenoid valve to enter the power-on process control mode according to the continuous operation time of the low-temperature compressor, the ambient temperature and the exhaust temperature sensing package state, and controlling the solenoid valve according to the power-on process control mode further includes at least one of the following steps:

[0034] When the ambient temperature is lower than the second ambient temperature threshold and the exhaust temperature sensing package is normal, determine whether the continuous operation time of the low-temperature compressor is greater than or equal to the fifth predetermined time, wherein the fifth predetermined time is less than the third predetermined time; when the continuous operation time of the low-temperature compressor is greater than or equal to the fifth predetermined time, control the solenoid valve to enter the power-on process control mode, and control the solenoid valve according to the power-on process control mode;

[0035] When the ambient temperature is lower than the second ambient temperature threshold and the exhaust temperature sensing package is abnormal, determine whether the continuous operation time of the low-temperature stage compressor is greater than or equal to the sixth predetermined time, wherein the sixth predetermined time is less than the fourth predetermined time, and the sixth predetermined time is greater than the fifth predetermined time; when the continuous operation time of the low-temperature stage compressor is greater than or equal to the sixth predetermined time, control the solenoid valve to enter the power-on process control mode, and control the solenoid valve according to the power-on process control mode.

[0036] In some embodiments of the present disclosure, controlling the solenoid valve according to the power-on process control mode includes:

[0037] Determine whether the exhaust temperature sensing package is normal;

[0038] In case of abnormal exhaust temperature sensing package, exit the frequency limiting protection mode;

[0039] Determine whether to enter the frequency limiting protection mode;

[0040] When entering the frequency limiting protection mode, close the solenoid valve, and then re-execute the step of determining whether the system is powered on for the first time;

[0041] In the case of not entering the frequency limiting protection mode, determining whether the current number of times the solenoid valve is turned on and off is less than a second number threshold;

[0042] If the current number of times the solenoid valve is turned on and off is not less than the second number threshold, the solenoid valve is turned on, and then the step of determining whether the system is powered on for the first time is re-executed;

[0043] When the current number of solenoid valve openings and closings is less than the second number threshold, the solenoid valve is controlled to open for a second predetermined opening time and close for a second predetermined stopping time, and the number of openings and closings is accumulated, and then the step of determining whether the system is powered on for the first time is re-executed.

[0044] In some embodiments of the present disclosure, controlling the solenoid valve according to the power-on process control mode further includes:

[0045] When the exhaust temperature sensing package is normal, determining whether the exhaust temperature is greater than or equal to a first exhaust temperature threshold;

[0046] When the exhaust temperature is greater than or equal to the first exhaust temperature threshold, the frequency limiting protection mode is entered, and then a step of determining whether to enter the frequency limiting protection mode is performed;

[0047] When the exhaust temperature is less than the first exhaust temperature threshold, determining whether the exhaust temperature is less than or equal to the second exhaust temperature threshold, wherein the second exhaust temperature threshold is less than the first exhaust temperature threshold;

[0048] When the exhaust temperature is less than or equal to the second exhaust temperature threshold, executing the step of determining whether to enter the frequency limiting protection mode;

[0049] When the exhaust temperature is greater than the second exhaust temperature threshold and less than the first exhaust temperature threshold, the frequency limiting protection mode is exited, and then a step of determining whether to enter the frequency limiting protection mode is performed.

[0050] In some embodiments of the present disclosure, controlling the solenoid valve in the second mode further includes:

[0051] Determine whether the temperature sensor in the box is faulty;

[0052] In the case of a failure of the temperature sensor in the box, determining whether the continuous operation time of the low temperature stage compressor is greater than or equal to a seventh predetermined time, wherein the seventh predetermined time is less than the fifth predetermined time;

[0053] When the continuous operation time of the low temperature stage compressor is less than the seventh predetermined time, determining whether the low temperature stage compressor is shut down;

[0054] When the low temperature compressor is not shut down, determine whether the solenoid valve enters the power-on process control mode;

[0055] When the solenoid valve enters the power-on process control mode, the solenoid valve is controlled according to the power-on process control mode.

[0056] In some embodiments of the present disclosure, controlling the solenoid valve in the second mode further includes:

[0057] When the solenoid valve does not enter the power-on process control mode, determining whether the solenoid valve enters the first mode;

[0058] When the solenoid valve enters the first mode, performing the step of controlling the solenoid valve according to the first mode;

[0059] When the solenoid valve does not enter the first mode, determining whether the solenoid valve enters the power-off control mode;

[0060] When the solenoid valve enters the power-off control mode, the solenoid valve is controlled to be closed after being opened for a third predetermined opening time, and then the step of determining whether the system is powered on for the first time is re-executed;

[0061] When the solenoid valve does not enter the power-off control mode, re-execute the step of determining whether the system is powered on for the first time.

[0062] In some embodiments of the present disclosure, controlling the solenoid valve in the second mode further includes:

[0063] If the temperature sensor in the box is not faulty, determine whether the system is in the start-up and shutdown stage;

[0064] When the system is not in the start-up and shutdown stage, executing the step of determining whether the low-temperature compressor is shut down;

[0065] When the system is in the start-up and shutdown stage, executing the step of determining whether the continuous operation time of the low-temperature compressor is greater than or equal to a seventh predetermined time;

[0066] When the continuous operation time of the low temperature compressor is greater than or equal to the seventh predetermined time, the solenoid valve is controlled to enter the power-off control mode, and then the step of determining whether the low temperature compressor is shut down is performed;

[0067] When the low-temperature compressor is shut down, the continuous operation time of the low-temperature compressor is reset to zero, and then a step of determining whether the solenoid valve enters the power-on process control mode is performed.

[0068] In some embodiments of the present disclosure, controlling the solenoid valve accordingly according to whether the system is powered on for the first time and the temperature in the box further includes:

[0069] When the system is not powered on for the first time, determine whether the solenoid valve control command sent by the display panel is received;

[0070] When receiving the solenoid valve control instruction sent by the display panel, the solenoid valve is opened or closed according to the solenoid valve control instruction, and then the step of determining whether the system is powered on for the first time is re-executed;

[0071] In the case where the solenoid valve control instruction sent by the display panel is not received, a step of determining whether the temperature inside the box is greater than or equal to a second temperature threshold inside the box is performed.

[0072] According to another aspect of the present disclosure, there is provided a solenoid valve control device, comprising:

[0073] The valve control module is configured to control the opening and closing of the expansion tank by controlling the switch of the solenoid valve, wherein the solenoid valve and the expansion tank are arranged between the low-temperature compressor and the evaporator of the electrical equipment; and to control the amount of refrigerant in the system by controlling the opening and closing of the expansion tank;

[0074] Among them, the valve control module is configured to obtain the temperature inside the box when controlling the switch of the solenoid valve; determine whether the system is powered on for the first time; and control the solenoid valve accordingly based on whether the system is powered on for the first time and the temperature inside the box.

[0075] In some embodiments of the present disclosure, the solenoid valve control device is used to execute operations of the solenoid valve control method as described in any of the above embodiments.

[0076] According to another aspect of the present disclosure, there is provided a solenoid valve control device, comprising:

[0077] a memory configured to store instructions;

[0078] The processor is coupled to the memory, and is configured to execute the solenoid valve control method as described in any of the above embodiments based on the instructions stored in the memory.

[0079] According to another aspect of the present disclosure, there is provided an electrical device, comprising the solenoid valve control device as described in any of the above embodiments.

[0080] In some embodiments of the present disclosure, the electrical device is a medical refrigerator.

[0081] According to another aspect of the present disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the control method as described in any of the above embodiments is implemented.

[0082] Based on the various aspects provided by the present disclosure, the present disclosure adds a solenoid valve and an expansion tank between the low-temperature compressor and the evaporator. The amount of refrigerant in the expansion tank system can be controlled by the solenoid valve to open and close the expansion tank. By adjusting the amount of refrigerant when the compressor starts, the exhaust pressure of the low-temperature compressor is reduced, and the risk of tripping of the low-temperature compressor is avoided while quickly increasing the frequency.

[0083] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0084] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0085] Figure 1 Schematic diagrams of some embodiments of the electrical device disclosed herein.

[0086] Figure 2 Schematic diagram of some embodiments of the solenoid valve control method disclosed in the present invention.

[0087] Figure 3 Schematic diagrams of other embodiments of the solenoid valve control method disclosed in the present invention.

[0088] Figure 4 Schematic diagrams of some other embodiments of the solenoid valve control method disclosed in the present invention.

[0089] Figure 5 and Figure 6 Schematic diagrams of some other embodiments of the solenoid valve control method disclosed in the present invention.

[0090] Figure 7 Schematic diagrams of other embodiments of the solenoid valve control method disclosed in the present invention.

[0091] Figure 8 Schematic diagrams of other embodiments of the solenoid valve control method disclosed in the present invention.

[0092] Fig. 9 Schematic diagram of some embodiments of the solenoid valve control device disclosed in the present invention.

[0093] Fig.10 Schematic diagram of the structure of other embodiments of the control device disclosed in the present invention. DETAILED DESCRIPTION

[0094] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0095] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present disclosure. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0096] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.

[0097] The inventors discovered through research that related medical low-temperature refrigerators use a two-stage compressor, namely a high-temperature compressor and a low-temperature compressor. During the startup of the low-temperature compressor, if the amount of refrigerant in the system is too large, the large amount of refrigerant indicates an increase in the system load, and the pressure when the compressor is started becomes higher. When the pressure reaches a certain level, it will trigger the compressor's trip protection.

[0098] In view of the above technical problems, the present disclosure provides a solenoid valve control method and device, an electrical device and a computer-readable storage medium, and the present disclosure is described below through specific embodiments.

[0099] Figure 1 Schematic diagrams of some embodiments of the electrical equipment disclosed in the present invention. Figure 1 As shown, the electrical device of the present disclosure may include an evaporator 1 , a condenser 2 , a compressor 3 , an expansion valve 4 , a solenoid valve 5 and a solenoid valve control device 6 .

[0100] In some embodiments of the present disclosure, the electrical equipment of the present disclosure may be an electrical equipment such as a refrigerator or an air conditioner that includes a high-temperature compressor and a low-temperature compressor.

[0101] In some embodiments of the present disclosure, the electrical device of the present disclosure may be a medical refrigerator.

[0102] In some embodiments of the present disclosure, the compressor 3 may be a low temperature stage compressor.

[0103] In some embodiments of the present disclosure, a solenoid valve 5 and an expansion tank 4 are added between the low-temperature compressor 3 and the evaporator 1. The expansion tank 4 controls the amount of refrigerant in the system, and the solenoid valve 5 controls the opening and closing of the expansion tank. The exhaust pressure of the low-temperature compressor is reduced by adjusting the amount of refrigerant when the compressor starts.

[0104] In some embodiments of the present disclosure, the expansion tank 4 is configured to increase the amount of refrigerant when the compressor is started, and to store the refrigerant when the compressor is shut down.

[0105] In some embodiments of the present disclosure, the solenoid valve control device 6 is configured to control the switch of the solenoid valve to control the opening and closing of the expansion tank.

[0106] In some embodiments of the present disclosure, the solenoid valve control device 6 is configured to obtain the temperature inside the box while controlling the switch of the solenoid valve; determine whether the system is powered on for the first time; and control the solenoid valve accordingly based on whether the system is powered on for the first time and the temperature inside the box.

[0107] The present invention adds a solenoid valve and an expansion tank between the low-temperature compressor and the evaporator. The expansion tank controls the amount of refrigerant in the system, and the solenoid valve controls the opening and closing of the expansion tank. The exhaust pressure of the low-temperature compressor is reduced by adjusting the amount of refrigerant when the compressor is started, and the risk of the low-temperature compressor tripping is avoided while the frequency is quickly increased.

[0108] The solenoid valve control method and control device disclosed in the present invention are described below through specific embodiments.

[0109] Figure 2 Schematic diagram of some embodiments of the solenoid valve control method disclosed in the present invention. Preferably, this embodiment can be performed by the solenoid valve control device disclosed in the present invention or the electrical equipment disclosed in the present invention. The method may include at least one of steps 100 to 200, wherein:

[0110] Step 100, by controlling the switch of the solenoid valve, the expansion tank is controlled to be opened and closed, wherein the solenoid valve and the expansion tank are arranged between the low temperature compressor and the evaporator of the electrical equipment.

[0111] In some embodiments of the present disclosure, in step 100, the step of controlling the switch of the solenoid valve may include step 110 and step 120, wherein:

[0112] Step 110, obtaining the temperature inside the box.

[0113] In some embodiments of the present disclosure, the temperature inside the box may be the temperature inside an electrical device. For example, for a refrigerator, the temperature inside the box is the temperature inside the refrigerator.

[0114] Step 120, controlling the solenoid valve accordingly according to the temperature inside the box.

[0115] In some embodiments of the present disclosure, step 120 may include step 121 and step 122.

[0116] in:

[0117] Step 121, determining whether the system is powered on for the first time.

[0118] Step 122, controlling the solenoid valve accordingly according to whether the system is powered on for the first time and the temperature inside the box.

[0119] Step 200, controlling the amount of refrigerant in the system by controlling the opening and closing of the expansion tank.

[0120] Figure 3 Schematic diagrams of other embodiments of the solenoid valve control method disclosed in the present invention. Preferably, this embodiment can be executed by the solenoid valve control device disclosed in the present invention or the electrical equipment disclosed in the present invention. Figure 3 The method of the embodiment may include at least one of steps 1 to 11, wherein:

[0121] Step 1, determine whether it is the first power-on state. If not, follow the non-first power-on logic and execute step 7; otherwise, if yes, follow the first power-on logic and continue to determine whether the system is in a strong power state and execute step 2.

[0122] Step 2: Determine whether the whole machine is disconnected from the strong power supply. If so, proceed to step 8 according to the power-off state; otherwise, continue to determine the state of the sensor in the box and proceed to step 3.

[0123] The purpose of the present disclosure to judge whether the whole machine is disconnected from the strong current is that the refrigerator and other electrical equipment are equipped with a 12V battery, and the solenoid valve will only open under strong current.

[0124] Step 3, determine whether the temperature sensor in the box is normal. If yes, determine the temperature value in the box and execute step 4; otherwise, the system is powered on for the first time and runs according to the fault logic of the temperature sensor in the box and execute step 7.

[0125] Step 4, determine whether the temperature value in the box is greater than or equal to the first temperature threshold value in the box. If yes, the solenoid valve enters the first mode (mode 1) and executes step 5; otherwise, the solenoid valve enters the second mode (mode 0) and executes step 6.

[0126] In some embodiments of the present disclosure, the first temperature threshold in the box may be 15 degrees Celsius.

[0127] Step 5: The solenoid valve is processed according to the first mode, the system is powered on for the first time, and then step 7 is executed.

[0128] In some embodiments of the present disclosure, if the temperature value inside the box is greater than or equal to the first temperature threshold inside the box, the difference between the temperature inside the box and the set temperature is small, and the amount of refrigerant can be appropriately reduced, the solenoid valve enters the first mode (mode 1), that is, enters the power-on mode, and the solenoid valve performs on-off operations, so that the solenoid valve can balance the refrigerant in the expansion tank and the pipeline.

[0129] In some embodiments of the present disclosure, the first mode is a power-on mode, and the first mode includes three start and stop control logics.

[0130] In some embodiments of the present disclosure, the first mode is the start-stop stage (the difference between the temperature inside the box and the set temperature is ≤3°C).

[0131] When the above embodiment of the present disclosure is powered on for the first time, the system meets the conditions, and the solenoid valve is opened and closed three times to balance the pressure of the storage tank and the pipeline.

[0132] Step 6, control the solenoid valve according to the second mode, the solenoid valve executes according to the normal control mode, the system is powered on for the first time, and then execute step 7.

[0133] In some embodiments of the present disclosure, if the temperature value in the box is less than the first box temperature threshold, the difference between the box temperature and the set temperature is large, and rapid cooling is required, and the amount of refrigerant needs to be increased, so the solenoid valve enters the second mode (mode 0), that is, enters the normal control mode, and executes the temperature pull stage control logic. Thus, the solenoid valve can release the refrigerant to the system.

[0134] In some embodiments of the present disclosure, the second mode is the temperature-drawing stage (the difference between the temperature inside the box and the set temperature is greater than 3° C.).

[0135] In some embodiments of the present disclosure, the step of controlling the solenoid valve in the second mode may include: after different ambient temperatures in the temperature-drawing stage meet the corresponding continuous operating time, the solenoid valve executes 6 cycles of on for 5 seconds and off for 120 seconds.

[0136] Step 7, determine whether the display panel sends a command to close the solenoid valve. If yes, close the solenoid valve and execute step 8; otherwise, continue to determine the display panel command and execute step 9.

[0137] Step 8, close the solenoid valve, then restart to determine the system power-on status and execute step 1.

[0138] Step 9, determine whether the display panel sends a command to open the solenoid valve. If yes, open the solenoid valve and execute step 10; otherwise, determine the operating state of the solenoid valve according to normal logic and execute step 11.

[0139] Step 10, open the solenoid valve, then restart to determine the system power-on status and execute step 1.

[0140] Step 11, controlling the solenoid valve according to the second mode.

[0141] The present disclosure determines whether the user inputs an on or off solenoid valve command through a controller or a display panel. If yes, the command is executed; if no, step 11 and subsequent steps are executed.

[0142] The method for controlling the solenoid valve according to the first mode or the second mode of the present disclosure is described in detail below through specific embodiments.

[0143] Figure 4 Schematic diagram of some other embodiments of the solenoid valve control method of the present disclosure. Preferably, this embodiment can be executed by the solenoid valve control device of the present disclosure or the electrical equipment of the present disclosure. Figure 4 The method of the embodiment (controlling the solenoid valve in the first mode) may include at least one of steps 41 to 43, wherein:

[0144] Step 41, determine whether the current number of times the electromagnetic valve is turned on and off is less than the first number threshold N1. If so, the electromagnetic valve is turned on and off for a cycle, and step 42 is executed; otherwise, the electromagnetic valve is closed, and step 43 is executed.

[0145] Step 42, when the current number of solenoid valve on / off times is less than the first number threshold value N1, the solenoid valve is controlled to perform an on / off operation once in the manner of opening for a first predetermined opening time t1 and stopping for a first predetermined stopping time t2, and the number of on / off times is accumulated, and then the step of determining whether the system is powered on for the first time (i.e. Figure 3 Step 1) of the embodiment.

[0146] In some embodiments of the present disclosure, the first predetermined start time t1 is 20 seconds, and the first predetermined stop time t2 is 5 seconds.

[0147] Step 43: If the current number of times the solenoid valve is turned on and off is not less than the first number threshold N1, the solenoid valve is closed, and then the step of determining whether the system is powered on for the first time (i.e. Figure 3 Step 1) of the embodiment.

[0148] In the above embodiment of the present disclosure, if the number of starts and stops is less than or equal to 3, one start and stop is performed for the first power-on, and three start and stop operations are performed after the conditions are met. If the number of starts and stops is greater than 3, the solenoid valve is closed to maintain the balance of the expansion tank and the pipeline refrigerant.

[0149] Figure 5 and Figure 6 Schematic diagram of some other embodiments of the solenoid valve control method of the present disclosure. Preferably, this embodiment can be executed by the solenoid valve control device of the present disclosure or the electrical equipment of the present disclosure. Figure 5 and Figure 6 The method of the embodiment (controlling the solenoid valve in the second mode) may include at least one of steps 51 to 68, steps 1 and 5, wherein:

[0150] Step 51, determine whether the temperature sensor in the box is normal. If normal, continue to determine the temperature value and execute step 52; otherwise, execute step 58.

[0151] Step 52, determine whether the temperature value of the box temperature sensor is greater than or equal to the second box temperature threshold, where the second box temperature threshold is less than the first box temperature threshold. If yes, continue to determine the compressor operation status and execute step 53; otherwise, execute step 58.

[0152] In some embodiments of the present disclosure, the second box internal temperature threshold is -40 degrees Celsius.

[0153] Step 53, determine whether the low temperature compressor is started. If it is started, continue to determine whether it runs to the target speed and execute step 54; otherwise, execute step 58.

[0154] Step 54, determine whether the low temperature compressor has run to the target speed. If yes, record the continuous running time of the low temperature compressor and execute step 55; otherwise, execute step 58.

[0155] In some embodiments of the present disclosure, the continuous operation time of the low-temperature stage compressor is the continuous operation time after the low-temperature stage compressor reaches the target speed.

[0156] Step 55, record the continuous operation time of the low temperature compressor, then determine the ambient temperature value and execute step 56.

[0157] Step 56, judging whether the continuous operation time of the low temperature compressor at different ambient temperatures meets the corresponding continuous operation time threshold. If the continuous operation time of the low temperature compressor at different ambient temperatures meets the corresponding continuous operation time threshold, step 57 is executed; otherwise, if the continuous operation time of the low temperature compressor at different ambient temperatures does not meet the corresponding continuous operation time threshold, step 59 is executed.

[0158] Figure 7 Schematic diagrams of other embodiments of the solenoid valve control method disclosed in the present invention. Preferably, this embodiment can be executed by the solenoid valve control device disclosed in the present invention or the electrical equipment disclosed in the present invention. Figure 7 The method of the embodiment (eg Figure 5 Step 56) of the embodiment may include at least one of steps 561 to 551, wherein:

[0159] Step 561, determine whether the ambient temperature is greater than or equal to the first ambient temperature threshold. If yes, continue to determine the exhaust temperature sensor value and execute step 562; otherwise, continue to determine the ambient temperature value and execute step 565.

[0160] In some embodiments of the present disclosure, the first ambient temperature threshold may be 28 degrees Celsius.

[0161] Step 562, determine whether the exhaust temperature sensing package is normal. If yes, continue to determine the continuous operation time of the low temperature compressor and execute step 563; otherwise, execute step 564.

[0162] Step 563: When the ambient temperature is greater than or equal to the first ambient temperature threshold and the exhaust temperature sensing package is normal, determine whether the continuous operation time of the low temperature compressor is greater than or equal to the first predetermined time T1. If yes, enter the solenoid valve power-on process control and execute step 57; otherwise, execute step 59.

[0163] In some embodiments of the present disclosure, the first predetermined time T1 may be 30 minutes.

[0164] Step 564: When the ambient temperature is greater than or equal to the first ambient temperature threshold and the exhaust temperature sensing package is abnormal, determine whether the continuous operation time of the low-temperature compressor is greater than or equal to the second predetermined time T2, wherein the second predetermined time T2 is greater than the first predetermined time T1. If yes, enter the solenoid valve power-on process control and execute step 57; otherwise, execute step 59.

[0165] In some embodiments of the present disclosure, the second predetermined time T2 may be 60 minutes.

[0166] Step 565, determine whether the ambient temperature is greater than or equal to the second ambient temperature threshold. If yes, continue to determine the exhaust temperature sensor value and execute step 566; otherwise, execute step 569.

[0167] In some embodiments of the present disclosure, the second ambient temperature threshold may be 23 degrees Celsius.

[0168] Step 566, determine whether the exhaust temperature sensing package is normal. If yes, continue to determine the continuous operation time of the low temperature compressor and execute step 567; otherwise, execute step 568.

[0169] Step 567: When the ambient temperature is less than the first ambient temperature threshold and greater than or equal to the second ambient temperature threshold, and the exhaust temperature sensing package is normal, determine whether the continuous operation time of the low-temperature compressor is greater than or equal to the third predetermined time T3, wherein the second ambient temperature threshold is less than the first ambient temperature threshold, and the third predetermined time T3 is less than the first predetermined time T1. If so, when the continuous operation time of the low-temperature compressor is greater than or equal to the third predetermined time T3, control the solenoid valve to enter the power-on process control mode, control the solenoid valve according to the power-on process control mode, and execute step 57; otherwise, execute step 59.

[0170] In some embodiments of the present disclosure, the third predetermined time T3 may be 20 minutes.

[0171] Step 568: When the ambient temperature is less than the first ambient temperature threshold and greater than or equal to the second ambient temperature threshold, and the exhaust temperature sensing package is abnormal, determine whether the continuous operation time of the low-temperature compressor is greater than or equal to the fourth predetermined time T4, wherein the fourth predetermined time T4 is less than the second predetermined time T2, and the fourth predetermined time T4 is greater than the third predetermined time T3. When the continuous operation time of the low-temperature compressor is greater than or equal to the fourth predetermined time T4, control the solenoid valve to enter the power-on process control mode, control the solenoid valve according to the power-on process control mode, and execute step 57; otherwise, execute step 59.

[0172] In some embodiments of the present disclosure, the fourth predetermined time T4 may be 50 minutes.

[0173] Step 569, determine whether the exhaust temperature sensing package is normal. If yes, continue to determine the continuous operation time of the low temperature compressor and execute step 550; otherwise, execute step 551.

[0174] Step 550: When the ambient temperature is less than the second ambient temperature threshold and the exhaust temperature sensing package is normal, determine whether the continuous operation time of the low-temperature compressor is greater than or equal to the fifth predetermined time T5, wherein the fifth predetermined time T5 is less than the third predetermined time T3. When the continuous operation time of the low-temperature compressor is greater than or equal to the fifth predetermined time T5, control the solenoid valve to enter the power-on process control mode, control the solenoid valve according to the power-on process control mode, and execute step 57; otherwise, execute step 59.

[0175] In some embodiments of the present disclosure, the fifth predetermined time T5 may be 10 minutes.

[0176] Step 551, when the ambient temperature is less than the second ambient temperature threshold and the exhaust temperature sensing package is abnormal, determine whether the continuous operation time of the low temperature compressor is greater than or equal to the sixth predetermined time T6, wherein the sixth predetermined time T6 is less than the fourth predetermined time T4, and the sixth predetermined time T6 is greater than the fifth predetermined time T5. When the continuous operation time of the low temperature compressor is greater than or equal to the sixth predetermined time, control the solenoid valve to enter the power-on process control mode, and control the solenoid valve according to the power-on process control mode.

[0177] In some embodiments of the present disclosure, the sixth predetermined time T6 may be 40 minutes.

[0178] The above embodiment of the present disclosure enters the power-on process control after the continuous operation time requirement is met, and the solenoid valve enters 6 opening and stopping (opening for 5 seconds and closing for 120 seconds cycle control); if the continuous time is not met, it will not enter 6 opening and stopping. The solenoid valve will perform frequency limiting protection judgment when executing the action.

[0179] The above embodiments of the present disclosure have different judgment thresholds for continuous operation time at different ambient temperatures (greater than 28, greater than 23, less than 23) because the higher the ambient temperature, the longer the compressor needs to run stably.

[0180] In the above-mentioned embodiment of the present disclosure, when the exhaust temperature sensing package is abnormal, a judgment threshold corresponding to a longer continuous operation time is required compared to the normal situation. The reason is that when the exhaust temperature sensing package is abnormal, the exhaust temperature is unknown, and it is assumed that the system is in a relatively poor working condition.

[0181] Step 57, controlling the solenoid valve to enter the power-on process control mode, and controlling the solenoid valve according to the power-on process control mode.

[0182] In some embodiments of the present disclosure, step 56-step 57 may include: controlling the solenoid valve to enter the power-on process control mode according to the continuous running time of the low-temperature compressor, the ambient temperature and the state of the exhaust temperature sensing package, and controlling the solenoid valve according to the power-on process control mode.

[0183] Figure 8 Schematic diagrams of other embodiments of the solenoid valve control method disclosed in the present invention. Preferably, this embodiment can be executed by the solenoid valve control device disclosed in the present invention or the electrical equipment disclosed in the present invention. Figure 8 The method of the embodiment (eg Figures 5 to 7 Step 57) of any embodiment may include at least one of steps 570 to 579, wherein:

[0184] Step 570, determine whether the exhaust temperature sensing package is normal. If normal, continue to determine the exhaust temperature value and execute step 571; otherwise, if the exhaust temperature sensing package is abnormal, execute step 573.

[0185] Step 571, determine whether the exhaust temperature value is greater than or equal to the first exhaust temperature threshold. If yes, enter the frequency limiting protection mode and execute step 574; otherwise, continue to execute step 573;

[0186] In some embodiments of the present disclosure, the first exhaust temperature threshold may be 125 degrees Celsius.

[0187] Step 572, determine whether the exhaust temperature value is less than or equal to the second exhaust temperature threshold, wherein the second exhaust temperature threshold is less than the first exhaust temperature threshold. If yes, exit the frequency limit protection and execute step 573; otherwise, continue to determine whether to enter the frequency limit protection and execute step 575.

[0188] In some embodiments of the present disclosure, the second exhaust temperature threshold may be 123 degrees Celsius.

[0189] In some embodiments of the present disclosure, the values ​​of the first exhaust temperature threshold and the second exhaust temperature threshold are values ​​obtained through experiments.

[0190] In some embodiments of the present disclosure, the frequency limiting protection step may be achieved by keeping the current operating frequency of the compressor from rising.

[0191] The function of the frequency limiting protection mode disclosed in the present invention is to protect the compressor and prevent the compressor from tripping.

[0192] Step 573, exit the frequency limiting protection state, and then execute step 575.

[0193] Step 574, enter the frequency limiting protection mode, and then execute step 575.

[0194] Step 575, determine whether to enter the frequency limiting protection mode. If so, close the solenoid valve and execute step 579, otherwise, determine the on / off state of the solenoid valve and execute step 576.

[0195] Step 576, determine whether the number of solenoid valve on / off cycles reaches a second threshold value N2 times. If reached, open the solenoid valve and execute step 578; otherwise, execute the solenoid valve on / off operation and execute step 577.

[0196] In some embodiments of the present disclosure, the second quantity threshold N2 is 6 times.

[0197] In some embodiments of the present disclosure, the solenoid valve on-off cycle is to control the solenoid valve to perform an on-off cycle in a manner of opening for a second predetermined opening time t3 and stopping for a second predetermined stopping time t4.

[0198] In some embodiments of the present disclosure, the second predetermined start time t3 is 5 seconds; the second predetermined stop time t4 is 120 seconds.

[0199] Step 577, the solenoid valve is opened for the second predetermined opening time t3 and closed for the second predetermined stopping time t4 once, and the number of opening and stopping cycles is accumulated, and then the system power-on status is determined again, and then the execution is performed. Figure 3 Step 1 of the embodiment is to re-execute the step of determining whether the system is powered on for the first time.

[0200] The above-mentioned embodiment of the present disclosure determines the number of on-off cycles of the solenoid valve. The solenoid valve needs to be opened after 6 on-off cycles. The purpose of opening the solenoid valve is: when the system is in the warming stage, the refrigerant is completely released into the system to increase the refrigeration capacity; the refrigerant is slowly released to prevent excessive pressure.

[0201] Step 578, open the solenoid valve, then restart the system power-on status, and then execute Figure 3 Step 1 of the embodiment is to re-execute the step of determining whether the system is powered on for the first time.

[0202] Step 579, close the solenoid valve, then restart the system power-on status, and then execute Figure 3 Step 1 of the embodiment is to re-execute the step of determining whether the system is powered on for the first time.

[0203] Step 58, reset the continuous operation time of the low temperature compressor, then determine the state of the temperature sensor in the box, and execute step 59.

[0204] Step 59, determine whether the temperature sensor in the box is normal. If normal, continue to determine the continuous operation time of the low-temperature compressor and execute step 60; otherwise, determine the system operation status and execute step 62.

[0205] Combine the following Figure 6 right Figure 6 Steps 60 to 68, step 1 and step 5 of the embodiment are described.

[0206] Step 60, determine whether the continuous operation time of the low temperature compressor is greater than or equal to the seventh predetermined time T7. If yes, the solenoid valve enters power-off control and executes step 61; otherwise, determine the operation status of the low temperature compressor and execute step 63.

[0207] In some embodiments of the present disclosure, the seventh predetermined time T7 may be 5 minutes.

[0208] Step 61, the solenoid valve enters the power-off control mode (power-off control mode 2). Then, the operating state of the low-temperature compressor is determined, and step 63 is executed.

[0209] In some embodiments of the present disclosure, the power-off control means that the solenoid valve is energized for 1 minute and then remains de-energized.

[0210] Step 62, determine whether the system is in the start-up and shutdown stage. If yes, determine the continuous operation time of the low-temperature compressor and execute step 60, otherwise, determine the operation state of the low-temperature compressor and execute step 63.

[0211] The present disclosure is in the start-stop stage of step 32 when the difference between the temperature inside the box and the set temperature is less than 3°C, indicating that the system is running smoothly. When the low-temperature compressor is turned on again and runs continuously for 5 minutes, it enters power-off control.

[0212] Step 63, determine whether the low temperature compressor is in a shutdown state. If it is shutdown, execute step 64; otherwise, determine the operating state of the solenoid valve and execute step 65.

[0213] Step 64, clearing the continuous operation time of the low temperature stage compressor, and then executing step 65.

[0214] Step 65, determine whether the solenoid valve enters the power-on process control state. If yes, the solenoid valve enters the power-on process control mode and executes step 57; otherwise, continue to determine the solenoid valve operation state and execute step 66.

[0215] Step 66, determine whether the solenoid valve enters the first mode (mode 1). If so, control the solenoid valve according to the first mode and execute step 5; otherwise, continue to determine the operation mode of the solenoid valve and execute step 67.

[0216] In some embodiments of the present disclosure, step 5 may include: Figure 4 The steps of the embodiment, the first mode, namely the power-on mode, refers to the process of three start-stop cycle judgments.

[0217] Step 67, determine whether the solenoid valve enters the power-off control mode (power-off control 2). If yes, execute step 68; otherwise, restart the determination of the system power-on status and execute Figure 3 Step 1 of the embodiment.

[0218] Steps 65 to 67 of the above embodiment of the present disclosure are used to determine the operating state of the solenoid valve.

[0219] Step 68, the solenoid valve is closed after opening for the third predetermined opening time t5, and then the system power-on status is determined again, and the execution Figure 3 Step 1 of the embodiment.

[0220] In some embodiments of the present disclosure, the third predetermined opening time t5 may be 1 minute.

[0221] The solenoid valve in the above embodiment of the present disclosure is closed after being opened for 1 minute, thereby balancing the pressure of the refrigerant tank and the pipeline.

[0222] The above embodiment of the present disclosure can reduce the exhaust pressure of the low-temperature compressor through the control of the solenoid valve and the expansion tank, and avoid the risk of the low-temperature compressor tripping while quickly increasing the frequency. In the above embodiment of the present disclosure, the amount of refrigerant increases, the temperature pulling speed becomes faster, and the compressor pressure is controlled not to reach the tripping value.

[0223] Fig. 9 Schematic diagram of some embodiments of the solenoid valve control device disclosed in the present invention. Fig. 9 As shown, the solenoid valve control device 90 of the present disclosure may include a valve control module 91, wherein:

[0224] The valve control module 91 is configured to control the opening and closing of the expansion tank by controlling the switch of the solenoid valve, wherein the solenoid valve and the expansion tank are arranged between the low-temperature compressor and the evaporator of the electrical equipment; and control the refrigerant amount of the system by controlling the opening and closing of the expansion tank.

[0225] In some embodiments of the present disclosure, the valve control module 91 is configured to obtain the temperature inside the box when controlling the switch of the solenoid valve; and control the solenoid valve accordingly according to the temperature inside the box.

[0226] In some embodiments of the present disclosure, the valve control module 91 is configured to determine whether the system is powered on for the first time while controlling the solenoid valve accordingly according to the temperature inside the box; and to control the solenoid valve accordingly according to whether the system is powered on for the first time and the temperature inside the box.

[0227] In some embodiments of the present disclosure, the valve control module 91 controls the solenoid valve accordingly based on whether the system is powered on for the first time and the temperature inside the box. The valve control module 91 is configured to, when the system is powered on for the first time, determine whether the temperature inside the box is greater than or equal to a first temperature threshold inside the box; when the temperature inside the box is greater than or equal to the first temperature threshold inside the box, control the solenoid valve in a first mode; when the temperature inside the box is less than the first temperature threshold inside the box, control the solenoid valve in a second mode.

[0228] In some embodiments of the present disclosure, the valve control module 91 is configured to determine whether the current number of times the solenoid valve is turned on and off is less than a first quantity threshold when controlling the solenoid valve in accordance with the first mode; if the current number of times the solenoid valve is turned on and off is not less than the first quantity threshold, close the solenoid valve, and then re-execute the operation of determining whether the system is powered on for the first time; if the current number of times the solenoid valve is turned on and off is less than the first quantity threshold, control the solenoid valve to open for a first predetermined opening time and stop for a first predetermined stopping time, and accumulate the number of times the solenoid valve is turned on and off, and then re-execute the operation of determining whether the system is powered on for the first time.

[0229] In some embodiments of the present disclosure, the valve control module 91 controls the solenoid valve accordingly according to whether the system is powered on for the first time and the temperature inside the box, and is also configured to control the solenoid valve in a second mode when the system is not powered on for the first time.

[0230] In some embodiments of the present disclosure, the valve control module 91 is configured to, when controlling the solenoid valve in accordance with the second mode, determine whether the temperature inside the box is greater than or equal to a second temperature threshold inside the box, wherein the second temperature threshold inside the box is less than the first temperature threshold inside the box; when the temperature inside the box is greater than or equal to the second temperature threshold inside the box, determine whether the low-temperature stage compressor has been started and is running at the target speed; when the low-temperature stage compressor has been started and is running at the target speed, record the continuous running time of the low-temperature stage compressor; obtain the ambient temperature and the state of the exhaust temperature sensing bag; and control the solenoid valve to enter the power-on process control mode according to the continuous running time of the low-temperature stage compressor, the ambient temperature and the state of the exhaust temperature sensing bag, and control the solenoid valve according to the power-on process control mode.

[0231] In some embodiments of the present disclosure, the valve control module 91 controls the solenoid valve to enter the power-on process control mode according to the continuous running time of the low-temperature compressor, the ambient temperature and the state of the exhaust temperature sensing bag, and controls the solenoid valve according to the power-on process control mode. The valve control module 91 is configured to determine whether the continuous running time of the low-temperature compressor is greater than or equal to the first predetermined time when the ambient temperature is greater than or equal to the first ambient temperature threshold and the exhaust temperature sensing bag is normal; when the continuous running time of the low-temperature compressor is greater than or equal to the first predetermined time, control the solenoid valve to enter the power-on process control mode, and control the solenoid valve according to the power-on process control mode.

[0232] In some embodiments of the present disclosure, the valve control module 91 controls the solenoid valve to enter the power-on process control mode according to the continuous running time of the low-temperature compressor, the ambient temperature and the state of the exhaust temperature sensor, and controls the solenoid valve according to the power-on process control mode. The valve control module 91 is configured to, when the ambient temperature is greater than or equal to the first ambient temperature threshold and the exhaust temperature sensor is abnormal, determine whether the continuous running time of the low-temperature compressor is greater than or equal to a second predetermined time, wherein the second predetermined time is greater than the first predetermined time; when the continuous running time of the low-temperature compressor is greater than or equal to the second predetermined time, control the solenoid valve to enter the power-on process control mode, and control the solenoid valve according to the power-on process control mode.

[0233] In some embodiments of the present disclosure, the valve control module 91 controls the solenoid valve to enter the power-on process control mode according to the continuous running time of the low-temperature compressor, the ambient temperature and the state of the exhaust temperature sensor, and when the solenoid valve is controlled according to the power-on process control mode, the valve control module is configured to determine whether the continuous running time of the low-temperature compressor is greater than or equal to a third predetermined time when the ambient temperature is less than the first ambient temperature threshold and greater than or equal to the second ambient temperature threshold and the exhaust temperature sensor is normal, wherein the second ambient temperature threshold is less than the first ambient temperature threshold, and the third predetermined time is less than the first predetermined time; when the continuous running time of the low-temperature compressor is greater than or equal to the third predetermined time, the solenoid valve is controlled to enter the power-on process control mode, and the solenoid valve is controlled according to the power-on process control mode.

[0234] In some embodiments of the present disclosure, the valve control module 91 controls the solenoid valve to enter the power-on process control mode according to the continuous running time of the low-temperature compressor, the ambient temperature and the state of the exhaust temperature sensor, and controls the solenoid valve according to the power-on process control mode. The valve control module 91 is configured to determine whether the continuous running time of the low-temperature compressor is greater than or equal to a fourth predetermined time when the ambient temperature is less than the first ambient temperature threshold and greater than or equal to the second ambient temperature threshold and the exhaust temperature sensor is abnormal, wherein the fourth predetermined time is less than the second predetermined time and the fourth predetermined time is greater than the third predetermined time; when the continuous running time of the low-temperature compressor is greater than or equal to the fourth predetermined time, the solenoid valve is controlled to enter the power-on process control mode, and the solenoid valve is controlled according to the power-on process control mode.

[0235] In some embodiments of the present disclosure, the valve control module 91 controls the solenoid valve to enter the power-on process control mode according to the continuous running time of the low-temperature compressor, the ambient temperature and the state of the exhaust temperature sensor, and controls the solenoid valve according to the power-on process control mode. The valve control module 91 is configured to, when the ambient temperature is lower than the second ambient temperature threshold and the exhaust temperature sensor is normal, determine whether the continuous running time of the low-temperature compressor is greater than or equal to the fifth predetermined time, wherein the fifth predetermined time is less than the third predetermined time; when the continuous running time of the low-temperature compressor is greater than or equal to the fifth predetermined time, control the solenoid valve to enter the power-on process control mode, and control the solenoid valve according to the power-on process control mode.

[0236] In some embodiments of the present disclosure, the valve control module 91 controls the solenoid valve to enter the power-on process control mode according to the continuous running time of the low-temperature compressor, the ambient temperature and the state of the exhaust temperature sensor, and controls the solenoid valve according to the power-on process control mode. The valve control module 91 is configured to determine whether the continuous running time of the low-temperature compressor is greater than or equal to the sixth predetermined time when the ambient temperature is lower than the second ambient temperature threshold and the exhaust temperature sensor is abnormal, wherein the sixth predetermined time is less than the fourth predetermined time and the sixth predetermined time is greater than the fifth predetermined time; when the continuous running time of the low-temperature compressor is greater than or equal to the sixth predetermined time, the solenoid valve is controlled to enter the power-on process control mode, and the solenoid valve is controlled according to the power-on process control mode.

[0237] In some embodiments of the present disclosure, the valve control module 91 is configured to determine whether the exhaust temperature sensing package is normal when controlling the solenoid valve according to the power-on process control mode; exit the frequency limiting protection mode when the exhaust temperature sensing package is abnormal; determine whether to enter the frequency limiting protection mode; when entering the frequency limiting protection mode, close the solenoid valve, and then re-execute the operation of determining whether the system is powered on for the first time; when not entering the frequency limiting protection mode, determine whether the current number of solenoid valve openings and stops is less than a second number threshold; when the current number of solenoid valve openings and stops is not less than the second number threshold, open the solenoid valve, and then re-execute the operation of determining whether the system is powered on for the first time; when the current number of solenoid valve openings and stops is less than the second number threshold, control the solenoid valve to open and stop once in a manner of opening for a second predetermined opening time and stopping for a second predetermined stopping time, and accumulate the number of openings and stops, and then re-execute the operation of determining whether the system is powered on for the first time.

[0238] In some embodiments of the present disclosure, the valve control module 91 controls the solenoid valve according to the power-on process control mode, and is also configured to determine whether the exhaust temperature is greater than or equal to the first exhaust temperature threshold when the exhaust temperature sensing package is normal; enter the frequency limiting protection mode when the exhaust temperature is greater than or equal to the first exhaust temperature threshold, and then execute the operation of determining whether to enter the frequency limiting protection mode; determine whether the exhaust temperature is less than the first exhaust temperature threshold when the exhaust temperature is less than the first exhaust temperature threshold, wherein the second exhaust temperature threshold is less than the first exhaust temperature threshold; determine whether to enter the frequency limiting protection mode when the exhaust temperature is less than or equal to the second exhaust temperature threshold; exit the frequency limiting protection mode when the exhaust temperature is greater than the second exhaust temperature threshold and less than the first exhaust temperature threshold, and then execute the operation of determining whether to enter the frequency limiting protection mode.

[0239] In some embodiments of the present disclosure, the valve control module 91 is further configured to determine whether the temperature sensor in the box is faulty when controlling the solenoid valve in accordance with the second mode; in the case of a fault in the temperature sensor in the box, determine whether the continuous operation time of the low-temperature stage compressor is greater than or equal to the seventh predetermined time, wherein the seventh predetermined time is less than the fifth predetermined time; in the case that the continuous operation time of the low-temperature stage compressor is less than the seventh predetermined time, determine whether the low-temperature stage compressor is shut down; in the case that the low-temperature stage compressor is not shut down, determine whether the solenoid valve enters the power-on process control mode; in the case that the solenoid valve enters the power-on process control mode, control the solenoid valve according to the power-on process control mode.

[0240] In some embodiments of the present disclosure, the valve control module 91 is further configured to, when the solenoid valve is controlled in the second mode, determine whether the solenoid valve enters the first mode if the solenoid valve does not enter the power-on process control mode; when the solenoid valve enters the first mode, perform the operation of controlling the solenoid valve in the first mode; when the solenoid valve does not enter the first mode, determine whether the solenoid valve enters the power-off control mode;

[0241] When the solenoid valve enters the power-off control mode, the solenoid valve is controlled to open for the third predetermined opening time and then closed, and then the operation of determining whether the system is powered on for the first time is re-executed; when the solenoid valve does not enter the power-off control mode, the operation of determining whether the system is powered on for the first time is re-executed.

[0242] In some embodiments of the present disclosure, in some embodiments of the present disclosure, the valve control module 91, when controlling the solenoid valve in accordance with the second mode, is also configured to, when there is no fault in the temperature sensor in the box, determine whether the system is in the start-stop stage; when the system is not in the start-stop stage, determine whether the low-temperature compressor is shut down; when the system is in the start-stop stage, determine whether the continuous running time of the low-temperature compressor is greater than or equal to the seventh predetermined time; when the continuous running time of the low-temperature compressor is greater than or equal to the seventh predetermined time, control the solenoid valve to enter the power-off control mode, and then determine whether the low-temperature compressor is shut down; when the low-temperature compressor is shut down, clear the continuous running time of the low-temperature compressor, and then determine whether the solenoid valve enters the power-on process control mode.

[0243] In some embodiments of the present disclosure, the valve control module 91 controls the solenoid valve accordingly according to whether the system is powered on for the first time and the temperature inside the box. In addition, the valve control module 91 is configured to determine whether a solenoid valve control instruction sent by the display panel is received if the system is not powered on for the first time; when a solenoid valve control instruction sent by the display panel is received, the solenoid valve is opened or closed according to the solenoid valve control instruction, and then the operation of determining whether the system is powered on for the first time is re-executed; when no solenoid valve control instruction is received from the display panel, the operation of determining whether the temperature inside the box is greater than or equal to a second temperature threshold inside the box is executed.

[0244] In some embodiments of the present disclosure, the solenoid valve control device is used to implement any of the above embodiments (for example Figure 2-Figure 8 Operation of the solenoid valve control method described in any embodiment).

[0245] The control device of the above-mentioned embodiment of the present disclosure can effectively reduce the exhaust pressure of the compressor when it is started, thereby avoiding the compressor from tripping.

[0246] Fig.10 Schematic diagram of the structure of some other embodiments of the control device disclosed in the present invention. Fig.10 As shown, the control device includes a memory 101 and a processor 102 .

[0247] The memory 101 is used to store instructions. The processor 102 is coupled to the memory 101. The processor 102 is configured to execute and implement any of the above embodiments (for example, Figure 2-Figure 8 The solenoid valve control method described in any embodiment).

[0248] like Fig.10 As shown, the control device further includes a communication interface 103 for information exchange with other devices. At the same time, the control device further includes a bus 104, through which the processor 102, the communication interface 103, and the memory 101 communicate with each other.

[0249] The memory 101 may include a high-speed RAM memory, and may also include a non-volatile memory, such as at least one disk memory. The memory 101 may also be a memory array. The memory 101 may also be divided into blocks, and the blocks may be combined into virtual volumes according to certain rules.

[0250] In addition, the processor 102 may be a central processing unit (CPU), or may be an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present disclosure.

[0251] According to another aspect of the present disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, any of the above embodiments (for example Figure 2-Figure 8 The control method described in any embodiment).

[0252] In some embodiments of the present disclosure, the computer-readable storage medium may be implemented as a non-transitory computer-readable storage medium.

[0253] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, devices, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable non-transient storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0254] The present disclosure is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present disclosure. It should be understood that each process and / or block in the flowchart and / or block diagram and the combination of processes and / or blocks 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 produce 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.

[0255] 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 including 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.

[0256] 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 A step that specifies a function in one or more boxes.

[0257] The solenoid valve control device and valve control module described above can be implemented as a general-purpose processor, a programmable logic controller (PLC), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components or any appropriate combination thereof for performing the functions described in this application.

[0258] So far, the present disclosure has been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0259] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware, or may be accomplished by instructing the relevant hardware through a program, and the program may be stored in a non-transitory computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0260] The description of the present disclosure is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the present disclosure to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present disclosure, and to enable those of ordinary skill in the art to understand the present disclosure and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A solenoid valve control method, comprising: By controlling the switch of the solenoid valve, the expansion tank is controlled to be opened and closed, wherein the solenoid valve and the expansion tank are arranged between the low-temperature compressor and the evaporator of the electrical equipment; By controlling the opening and closing of the expansion tank, the amount of refrigerant in the system is controlled; Wherein, the switch controlling the solenoid valve comprises: Get the temperature inside the box; Determine whether the system is powered on for the first time; Control the solenoid valve accordingly based on whether the system is powered on for the first time and the temperature inside the box; Wherein, controlling the solenoid valve accordingly according to whether the system is powered on for the first time and the temperature in the box includes: When the system is powered on for the first time, determining whether the temperature inside the box is greater than or equal to a first temperature threshold inside the box; When the temperature in the box is greater than or equal to the first box temperature threshold, the solenoid valve is controlled according to the first mode, wherein the control of the solenoid valve according to the first mode includes: determining whether the current number of times the solenoid valve is turned on and off is less than the first number threshold; when the current number of times the solenoid valve is turned on and off is not less than the first number threshold, the solenoid valve is closed, and then the step of determining whether the system is powered on for the first time is re-executed; when the current number of times the solenoid valve is turned on and off is less than the first number threshold, the solenoid valve is controlled to perform an opening and closing operation once in a manner of opening for a first predetermined opening time and stopping for a first predetermined stopping time, and the number of opening and stopping operations is accumulated, and then the step of determining whether the system is powered on for the first time is re-executed; When the temperature inside the box is lower than the first temperature threshold inside the box, the solenoid valve is controlled in accordance with the second mode, wherein the controlling of the solenoid valve in accordance with the second mode includes: controlling the solenoid valve to enter the power-on process control mode according to the continuous operation time of the low-temperature compressor, the ambient temperature and the state of the exhaust temperature sensing bag, and controlling the solenoid valve in accordance with the power-on process control mode, wherein the controlling of the solenoid valve in accordance with the power-on process control mode includes: judging whether the current number of opening and stopping of the solenoid valve is lower than the second number threshold, and when the current number of opening and stopping of the solenoid valve is not lower than the second number threshold, opening the solenoid valve, and then re-executing the step of judging whether the system is powered on for the first time, and when the current number of opening and stopping of the solenoid valve is lower than the second number threshold, controlling the solenoid valve to perform opening and stopping once in the manner of opening for a second predetermined opening time and stopping for a second predetermined stopping time, and accumulating the number of opening and stopping times, and then re-executing the step of judging whether the system is powered on for the first time.

2. The solenoid valve control method according to claim 1, wherein: The controlling of the solenoid valve according to whether the system is powered on for the first time and the temperature in the box includes: When the system is not powered on for the first time, the solenoid valve is controlled according to the second mode.

3. The solenoid valve control method according to claim 1 or 2, wherein: The controlling of the solenoid valve according to the second mode comprises: Determine whether the temperature inside the box is greater than or equal to a second temperature threshold inside the box, wherein the second temperature threshold inside the box is less than the first temperature threshold inside the box; When the temperature inside the box is greater than or equal to the second temperature threshold inside the box, determining whether the low-temperature compressor has been started and is running at a target speed; When the low-temperature compressor has been started and is running at the target speed, record the continuous running time of the low-temperature compressor; Get the ambient temperature and exhaust temperature sensor status; According to the continuous running time of the low-temperature compressor, the ambient temperature and the state of the exhaust temperature sensing package, the solenoid valve is controlled to enter the power-on process control mode, and the solenoid valve is controlled according to the power-on process control mode.

4. The solenoid valve control method according to claim 3, wherein: According to the continuous operation time of the low-temperature compressor, the ambient temperature and the exhaust temperature sensing package state, the solenoid valve is controlled to enter the power-on process control mode, and the solenoid valve is controlled according to the power-on process control mode, including at least one of the following steps: When the ambient temperature is greater than or equal to the first ambient temperature threshold and the exhaust temperature sensing package is normal, determine whether the continuous operation time of the low-temperature compressor is greater than or equal to the first predetermined time; when the continuous operation time of the low-temperature compressor is greater than or equal to the first predetermined time, control the solenoid valve to enter the power-on process control mode, and control the solenoid valve according to the power-on process control mode; When the ambient temperature is greater than or equal to the first ambient temperature threshold and the exhaust temperature sensing package is abnormal, determine whether the continuous operation time of the low-temperature stage compressor is greater than or equal to the second predetermined time, wherein the second predetermined time is greater than the first predetermined time; when the continuous operation time of the low-temperature stage compressor is greater than or equal to the second predetermined time, control the solenoid valve to enter the power-on process control mode, and control the solenoid valve according to the power-on process control mode.

5. The solenoid valve control method according to claim 4, wherein: According to the continuous operation time of the low-temperature compressor, the ambient temperature and the exhaust temperature sensing package state, the solenoid valve is controlled to enter the power-on process control mode, and the solenoid valve is controlled according to the power-on process control mode, and at least one of the following steps is further included: When the ambient temperature is less than the first ambient temperature threshold and greater than or equal to the second ambient temperature threshold, and the exhaust temperature sensing package is normal, determine whether the continuous operation time of the low-temperature compressor is greater than or equal to the third predetermined time, wherein the second ambient temperature threshold is less than the first ambient temperature threshold, and the third predetermined time is less than the first predetermined time; when the continuous operation time of the low-temperature compressor is greater than or equal to the third predetermined time, control the solenoid valve to enter the power-on process control mode, and control the solenoid valve according to the power-on process control mode; When the ambient temperature is lower than the first ambient temperature threshold and greater than or equal to the second ambient temperature threshold and the exhaust temperature sensing package is abnormal, determine whether the continuous operation time of the low-temperature stage compressor is greater than or equal to a fourth predetermined time, wherein the fourth predetermined time is less than the second predetermined time and the fourth predetermined time is greater than the third predetermined time; when the continuous operation time of the low-temperature stage compressor is greater than or equal to the fourth predetermined time, control the solenoid valve to enter the power-on process control mode, and control the solenoid valve according to the power-on process control mode.

6. The solenoid valve control method according to claim 5, wherein: According to the continuous operation time of the low-temperature compressor, the ambient temperature and the exhaust temperature sensing package state, the solenoid valve is controlled to enter the power-on process control mode, and the solenoid valve is controlled according to the power-on process control mode, and at least one of the following steps is further included: When the ambient temperature is lower than the second ambient temperature threshold and the exhaust temperature sensing package is normal, determine whether the continuous operation time of the low-temperature compressor is greater than or equal to the fifth predetermined time, wherein the fifth predetermined time is less than the third predetermined time; when the continuous operation time of the low-temperature compressor is greater than or equal to the fifth predetermined time, control the solenoid valve to enter the power-on process control mode, and control the solenoid valve according to the power-on process control mode; When the ambient temperature is lower than the second ambient temperature threshold and the exhaust temperature sensing package is abnormal, determine whether the continuous operation time of the low-temperature stage compressor is greater than or equal to the sixth predetermined time, wherein the sixth predetermined time is less than the fourth predetermined time, and the sixth predetermined time is greater than the fifth predetermined time; when the continuous operation time of the low-temperature stage compressor is greater than or equal to the sixth predetermined time, control the solenoid valve to enter the power-on process control mode, and control the solenoid valve according to the power-on process control mode.

7. The solenoid valve control method according to claim 1 or 2, wherein: The controlling of the solenoid valve according to the power-on process control mode also includes: Determine whether the exhaust temperature sensing package is normal; In case of abnormal exhaust temperature sensing package, exit the frequency limiting protection mode; Determine whether to enter the frequency limiting protection mode; When entering the frequency limiting protection mode, close the solenoid valve, and then re-execute the step of determining whether the system is powered on for the first time; In the case of not entering the frequency limiting protection mode, a step of determining whether the current number of times the solenoid valve is turned on and off is less than a second number threshold is performed.

8. The solenoid valve control method according to claim 7, wherein: The controlling of the solenoid valve according to the power-on process control mode also includes: When the exhaust temperature sensing package is normal, determining whether the exhaust temperature is greater than or equal to a first exhaust temperature threshold; When the exhaust temperature is greater than or equal to the first exhaust temperature threshold, the frequency limiting protection mode is entered, and then a step of determining whether to enter the frequency limiting protection mode is performed; When the exhaust temperature is less than the first exhaust temperature threshold, determining whether the exhaust temperature is less than or equal to the second exhaust temperature threshold, wherein the second exhaust temperature threshold is less than the first exhaust temperature threshold; When the exhaust temperature is less than or equal to the second exhaust temperature threshold, executing the step of determining whether to enter the frequency limiting protection mode; When the exhaust temperature is greater than the second exhaust temperature threshold and less than the first exhaust temperature threshold, the frequency limiting protection mode is exited, and then a step of determining whether to enter the frequency limiting protection mode is performed.

9. The solenoid valve control method according to claim 1 or 2, wherein: The controlling the solenoid valve according to the second mode further comprises: Determine whether the temperature sensor in the box is faulty; In the case of a failure of the temperature sensor in the box, determining whether the continuous operation time of the low temperature stage compressor is greater than or equal to a seventh predetermined time, wherein the seventh predetermined time is less than the fifth predetermined time; When the continuous operation time of the low temperature stage compressor is less than the seventh predetermined time, determining whether the low temperature stage compressor is shut down; When the low temperature compressor is not shut down, determine whether the solenoid valve enters the power-on process control mode; When the solenoid valve enters the power-on process control mode, the solenoid valve is controlled according to the power-on process control mode.

10. The solenoid valve control method according to claim 9, wherein: The controlling the solenoid valve according to the second mode further comprises: When the solenoid valve does not enter the power-on process control mode, determining whether the solenoid valve enters the first mode; When the solenoid valve enters the first mode, performing the step of controlling the solenoid valve according to the first mode; When the solenoid valve does not enter the first mode, determining whether the solenoid valve enters the power-off control mode; When the solenoid valve enters the power-off control mode, the solenoid valve is controlled to be closed after being opened for a third predetermined opening time, and then the step of determining whether the system is powered on for the first time is re-executed; When the solenoid valve does not enter the power-off control mode, re-execute the step of determining whether the system is powered on for the first time.

11. The solenoid valve control method according to claim 10, wherein: The controlling the solenoid valve according to the second mode further comprises: If the temperature sensor in the box is not faulty, determine whether the system is in the start-up and shutdown stage; When the system is not in the start-up and shutdown stage, executing the step of determining whether the low-temperature compressor is shut down; When the system is in the start-up and shutdown stage, executing the step of determining whether the continuous operation time of the low-temperature compressor is greater than or equal to a seventh predetermined time; When the continuous operation time of the low temperature compressor is greater than or equal to the seventh predetermined time, the solenoid valve is controlled to enter the power-off control mode, and then the step of determining whether the low temperature compressor is shut down is performed; When the low-temperature compressor is shut down, the continuous operation time of the low-temperature compressor is reset to zero, and then a step of determining whether the solenoid valve enters the power-on process control mode is performed.

12. The solenoid valve control method according to claim 1 or 2, wherein: The controlling of the solenoid valve according to whether the system is powered on for the first time and the temperature in the box also includes: When the system is not powered on for the first time, determine whether the solenoid valve control command sent by the display panel is received; When receiving the solenoid valve control instruction sent by the display panel, the solenoid valve is opened or closed according to the solenoid valve control instruction, and then the step of determining whether the system is powered on for the first time is re-executed; In the case where the solenoid valve control instruction sent by the display panel is not received, a step of determining whether the temperature inside the box is greater than or equal to a second temperature threshold inside the box is performed.

13. A solenoid valve control device, comprising: The valve control module is configured to control the opening and closing of the expansion tank by controlling the switch of the solenoid valve, wherein the solenoid valve and the expansion tank are arranged between the low-temperature compressor and the evaporator of the electrical equipment; and to control the amount of refrigerant in the system by controlling the opening and closing of the expansion tank; The valve control module is configured to obtain the temperature in the box while controlling the switch of the solenoid valve; determine whether the system is powered on for the first time; and control the solenoid valve accordingly according to whether the system is powered on for the first time and the temperature in the box; Wherein, the valve control module controls the solenoid valve accordingly according to whether the system is powered on for the first time and the temperature in the box. When the system is powered on for the first time, the valve control module is configured to determine whether the temperature in the box is greater than or equal to a first temperature threshold in the box; when the temperature in the box is greater than or equal to the first temperature threshold in the box, control the solenoid valve according to the first mode; when the temperature in the box is less than the first temperature threshold in the box, control the solenoid valve according to the second mode; When the solenoid valve is controlled in accordance with the first mode, the valve control module is configured to determine whether the current number of opening and stopping of the solenoid valve is less than a first number threshold; when the current number of opening and stopping of the solenoid valve is not less than the first number threshold, the solenoid valve is closed, and then the operation of determining whether the system is powered on for the first time is re-executed; when the current number of opening and stopping of the solenoid valve is less than the first number threshold, the solenoid valve is controlled to open and stop once in a manner of opening for a first predetermined opening time and stopping for a first predetermined stopping time, and the number of opening and stopping times is accumulated, and then the operation of determining whether the system is powered on for the first time is re-executed; When the solenoid valve is controlled in the second mode, the valve control module is configured to control the solenoid valve to enter the power-on process control mode according to the continuous operation time of the low-temperature compressor, the ambient temperature and the exhaust temperature sensing package state, and control the solenoid valve in the power-on process control mode; When the valve control module controls the solenoid valve according to the power-on process control mode, the valve control module is configured to determine whether the current number of opening and stopping of the solenoid valve is less than a second number threshold; when the current number of opening and stopping of the solenoid valve is not less than the second number threshold, the solenoid valve is opened, and then the operation of determining whether the system is powered on for the first time is re-executed; when the current number of opening and stopping of the solenoid valve is less than the second number threshold, the solenoid valve is controlled to open and stop once in a manner of opening for a second predetermined opening time and stopping for a second predetermined stopping time, and the number of opening and stopping times is accumulated, and then the operation of determining whether the system is powered on for the first time is re-executed.

14. The solenoid valve control device according to claim 13, wherein: The solenoid valve control device is used to execute the operation of the solenoid valve control method according to any one of claims 2 to 12.

15. A solenoid valve control device, comprising: a memory configured to store instructions; A processor is coupled to the memory, and the processor is configured to execute the solenoid valve control method according to any one of claims 1 to 12 based on instructions stored in the memory.

16. An electrical device, comprising the solenoid valve control device according to any one of claims 13 to 15.

17. The electrical device according to claim 16, wherein: The electrical equipment is a medical refrigerator.

18. A computer-readable storage medium, wherein: The computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the solenoid valve control method according to any one of claims 1 to 12 is implemented.

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