CN116105410A

CN116105410A - Solenoid valve control method and device, electrical equipment and computer readable storage medium

Info

Publication number: CN116105410A
Application number: CN202310127655.4A
Authority: CN
Inventors: 杨华伟; 卢起彪; 张南佑; 刘向阳; 郑志鹏
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-05-12

Abstract

The present disclosure discloses a solenoid valve control method and apparatus, an electric device, and a computer-readable storage medium. The electromagnetic valve control method comprises the following steps: the opening and closing of the expansion tank are controlled by controlling the switch of the electromagnetic valve, wherein the electromagnetic valve and the expansion tank are arranged between the low-temperature-stage compressor and the evaporator of the electrical equipment; and controlling the refrigerant quantity of the system by controlling the opening and closing of the expansion tank, wherein the switch of the control electromagnetic valve comprises: acquiring the temperature in the box; judging whether the system is electrified for the first time; and correspondingly controlling the electromagnetic valve according to whether the system is electrified for the first time and the temperature in the box. According to the low-temperature-level compressor and the evaporator, the electromagnetic valve and the expansion tank are additionally arranged between the low-temperature-level compressor and the evaporator, the refrigerant quantity of the expansion tank control system can be controlled to be opened and closed through the electromagnetic valve, the exhaust pressure of the low-temperature-level compressor is reduced by adjusting the refrigerant quantity when the compressor is started, and the tripping risk of the low-temperature-level compressor is avoided while the frequency is quickly increased.

Description

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

Technical Field

The present disclosure relates to the field of electrical equipment control technologies, and in particular, to a method and apparatus for controlling an electromagnetic valve, an electrical equipment, and a computer readable storage medium.

Background

The medical low-temperature refrigerator of the related art adopts a two-stage compressor, namely a high-temperature-stage compressor and a low-temperature-stage compressor, and in the starting process of the low-temperature-stage compressor, if the refrigerant quantity of a system is too large, the exhaust pressure of the low-temperature-stage compressor is too high, and even the compressor jumps.

Disclosure of Invention

The present disclosure provides a solenoid valve control method and apparatus, an electric device, and a computer readable storage medium, in which a solenoid valve and an expansion tank are added between a low temperature stage compressor and an evaporator, the expansion tank controls a refrigerant amount of a system, the solenoid valve controls opening and closing of the expansion tank, and an exhaust pressure of the low temperature stage compressor is reduced by adjusting the refrigerant amount when the compressor is started.

According to an aspect of the present disclosure, there is provided a solenoid valve control method including:

the opening and closing of the expansion tank are controlled by controlling the switch of the electromagnetic valve, wherein the electromagnetic valve and the expansion tank are arranged between the low-temperature-stage compressor and the evaporator of the electrical equipment;

by controlling the opening and closing of the expansion tank, the refrigerant quantity of the system is controlled.

In some embodiments of the present disclosure, the controlling the switching of the solenoid valve includes:

acquiring the temperature in the box;

the electromagnetic valve is correspondingly controlled according to the temperature in the box;

wherein, according to the incasement temperature, carry out corresponding control to the solenoid valve and include:

judging whether the system is electrified for the first time;

judging whether the temperature in the box is more than or equal to a first temperature threshold value in the box under the condition that the system is electrified for the first time;

controlling the electromagnetic valve according to a first mode under the condition that the temperature in the box is larger than or equal to a first temperature threshold value in the box;

and controlling the electromagnetic valve according to the second mode when the temperature in the box is smaller than the first temperature threshold value in the box.

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

judging whether the current solenoid valve start-stop times are smaller than a first quantity threshold value or not;

closing the electromagnetic valve under the condition that the current opening and closing times of the electromagnetic valve are not less than a first quantity threshold value, and then re-executing the step of judging whether the system is electrified for the first time;

and under the condition that the current opening and stopping times of the electromagnetic valve are smaller than a first quantity threshold value, controlling the electromagnetic valve to execute one-time opening and stopping according to the mode of opening a first preset opening time and stopping a first preset stopping time, accumulating the opening and stopping times, and then re-executing the step of judging whether the system is electrified for the first time.

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

in the event that the system is not first powered up, the solenoid valve is controlled in a second mode.

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

judging whether the temperature in the box is more than or equal to a second temperature threshold value in the box, wherein the second temperature threshold value in the box is less than the first temperature threshold value in the box;

judging whether the low-temperature-stage compressor is started and operated to a target rotating speed under the condition that the temperature in the tank is greater than or equal to a second temperature threshold value in the tank;

recording the continuous operation time of the low-temperature-stage compressor under the condition that the low-temperature-stage compressor is started and operated to a target rotating speed;

acquiring the ambient temperature and the exhaust temperature sensing bulb state;

and controlling the electromagnetic valve to enter an electrifying process control mode according to the continuous running time, the ambient temperature and the exhaust temperature sensing bag state of the low-temperature-stage compressor, and controlling the electromagnetic valve according to the electrifying process control mode.

In some embodiments of the present disclosure, the controlling the solenoid valve to enter the energizing process control mode according to the continuous operation time, the ambient temperature and the exhaust bulb state of the low temperature stage compressor includes at least one of the following steps:

Judging whether the continuous operation time of the low-temperature-stage compressor is more than or equal to a first preset time under the condition that the ambient temperature is more than or equal to a first ring temperature threshold value and the exhaust temperature sensing bulb is normal; controlling the electromagnetic valve to enter an electrifying process control mode under the condition that the continuous running time of the low-temperature-stage compressor is larger than or equal to a first preset time, and controlling the electromagnetic valve according to the electrifying process control mode;

judging whether the continuous operation time of the low-temperature-stage compressor is more than or equal to a second preset time or not under the conditions that the ambient temperature is more than or equal to a first annular temperature threshold value and the exhaust temperature sensing bulb is abnormal, wherein the second preset time is more than or equal to the first preset time; and under the condition that the continuous running time of the low-temperature-stage compressor is more than or equal to a second preset time, controlling the electromagnetic valve to enter an electrifying process control mode, and controlling the electromagnetic valve according to the electrifying process control mode.

In some embodiments of the present disclosure, the controlling the solenoid valve to enter the energizing process control mode according to the continuous operation time, the ambient temperature and the exhaust bulb state of the low temperature stage compressor further includes at least one of the following steps:

Judging whether the continuous operation time of the low-temperature-level compressor is more than or equal to a third preset time under the conditions that the ambient temperature is less than a first ambient temperature threshold value and more than or equal to a second ambient temperature threshold value and the exhaust temperature sensing bag is normal, wherein the second ambient temperature threshold value is less than the first ambient temperature threshold value, and the third preset time is less than the first preset time; controlling the electromagnetic valve to enter an electrifying process control mode under the condition that the continuous running time of the low-temperature-stage compressor is more than or equal to a third preset time, and controlling the electromagnetic valve according to the electrifying process control mode;

judging whether the continuous operation time of the low-temperature-stage compressor is more than or equal to a fourth preset time under the condition that the ambient temperature is less than a first ambient temperature threshold and more than or equal to a second ambient temperature threshold and the exhaust temperature sensing bag is abnormal, wherein the fourth preset time is less than the second preset time and is more than the third preset time; and under the condition that the continuous running time of the low-temperature-stage compressor is more than or equal to a fourth preset time, controlling the electromagnetic valve to enter an electrifying process control mode, and controlling the electromagnetic valve according to the electrifying process control mode.

Judging whether the continuous operation time of the low-temperature-stage compressor is more than or equal to a fifth preset time under the conditions that the ambient temperature is less than a second ring temperature threshold value and the exhaust temperature sensing bulb is normal, wherein the fifth preset time is less than a third preset time; controlling the electromagnetic valve to enter an electrifying process control mode under the condition that the continuous running time of the low-temperature-stage compressor is more than or equal to a fifth preset time, and controlling the electromagnetic valve according to the electrifying process control mode;

judging whether the continuous operation time of the low-temperature-stage compressor is more than or equal to a sixth preset time under the condition that the ambient temperature is less than a second ring temperature threshold value and the exhaust temperature sensing bulb is abnormal, wherein the sixth preset time is less than a fourth preset time, and the sixth preset time is greater than a fifth preset time; and under the condition that the continuous running time of the low-temperature-stage compressor is greater than or equal to a sixth preset time, controlling the electromagnetic valve to enter an electrifying process control mode, and controlling the electromagnetic valve according to the electrifying process control mode.

In some embodiments of the present disclosure, the controlling the solenoid valve in accordance with the power-on process control mode includes:

judging whether the exhaust temperature sensing bag is normal or not;

under the condition that the exhaust temperature sensing bag is abnormal, exiting the frequency limiting protection mode;

Judging whether to enter a frequency limiting protection mode;

under the condition of entering a frequency limiting protection mode, closing the electromagnetic valve, and then re-executing the step of judging whether the system is electrified for the first time;

under the condition that the frequency limiting protection mode is not entered, judging whether the current electromagnetic valve on-off times are smaller than a second number threshold value or not;

opening the electromagnetic valve under the condition that the current opening and closing times of the electromagnetic valve are not less than a second number threshold value, and then re-executing the step of judging whether the system is electrified for the first time;

and under the condition that the current opening and stopping times of the electromagnetic valve are smaller than a second number threshold, controlling the electromagnetic valve to execute one-time opening and stopping according to the mode of opening a second preset opening time and stopping a second preset stopping time, accumulating the opening and stopping times, and then re-executing the step of judging whether the system is electrified for the first time.

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

under the condition that the exhaust temperature sensing bulb is normal, judging whether the exhaust temperature is greater than or equal to a first exhaust temperature threshold value;

under the condition that the exhaust temperature is greater than or equal to a first exhaust temperature threshold value, entering a frequency limiting protection mode, and then executing the step of judging whether to enter the frequency limiting protection mode;

Judging whether the exhaust temperature is smaller than or equal to a second exhaust temperature threshold value under the condition that the exhaust temperature is smaller than a first exhaust temperature threshold value, wherein the second exhaust temperature threshold value is smaller than the first exhaust temperature threshold value;

executing the step of judging whether to enter the frequency limiting protection mode or not under the condition that the exhaust temperature is less than or equal to a second exhaust temperature threshold value;

and under the condition that the exhaust temperature is larger than the second exhaust temperature threshold value and smaller than the first exhaust temperature threshold value, exiting the frequency limiting protection mode, and then executing the step of judging whether to enter the frequency limiting protection mode.

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

judging whether the temperature sensor in the box fails or not;

judging whether the continuous operation time of the low-temperature-stage compressor is more than or equal to a seventh preset time under the condition that the temperature sensor in the box fails, wherein the seventh preset time is less than the fifth preset time;

judging whether the low-temperature-stage compressor is stopped or not under the condition that the continuous running time of the low-temperature-stage compressor is less than a seventh preset time;

judging whether the electromagnetic valve enters an electrifying process control mode under the condition that the low-temperature-stage compressor is not stopped;

When the solenoid valve enters the energization process control mode, the solenoid valve is controlled in accordance with the energization process control mode.

judging whether the electromagnetic valve enters a first mode or not under the condition that the electromagnetic valve does not enter an electrifying process control mode;

in the case where the solenoid valve enters the first mode, performing the step of controlling the solenoid valve in accordance with the first mode;

judging whether the electromagnetic valve enters a power-off control mode or not under the condition that the electromagnetic valve does not enter the first mode;

under the condition that the electromagnetic valve enters a power-off control mode, controlling the electromagnetic valve to be opened for a third preset opening time and then closed, and then re-executing the step of judging whether the system is electrified for the first time;

and under the condition that the electromagnetic valve does not enter the power-off control mode, the step of judging whether the system is electrified for the first time is executed again.

judging whether the system is in an on-off stage under the condition that the temperature sensor in the box has no fault;

executing the step of judging whether the low-temperature-stage compressor is stopped or not under the condition that the system is not in the start-stop stage;

Executing the step of judging whether the continuous operation time of the low-temperature-stage compressor is greater than or equal to a seventh preset time under the condition that the system is in an on-off stage;

under the condition that the continuous running time of the low-temperature-stage compressor is greater than or equal to a seventh preset time, controlling the electromagnetic valve to enter a power-off control mode, and then executing the step of judging whether the low-temperature-stage compressor is stopped;

under the condition that the low-temperature-stage compressor is stopped, the continuous operation time of the low-temperature-stage compressor is cleared, and then the step of judging whether the electromagnetic valve enters an electrifying process control mode is executed.

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

judging whether an electromagnetic valve control instruction sent by a display panel is received or not under the condition that the system is not electrified for the first time;

under the condition that an electromagnetic valve control instruction sent by a display panel is received, opening the electromagnetic valve or closing the electromagnetic valve according to the electromagnetic valve control instruction, and then re-executing the step of judging whether the system is electrified for the first time;

and under the condition that the electromagnetic valve control instruction sent by the display panel is not received, executing the step of judging whether the temperature in the box is more than or equal to a second temperature threshold value in the box.

According to another aspect of the present disclosure, there is provided a solenoid valve control apparatus including:

a valve control module configured to control opening and closing of the expansion tank by controlling opening and closing of the solenoid valve, wherein the solenoid valve and the expansion tank are disposed between the low-temperature-stage compressor and the evaporator of the electrical apparatus; and the opening and closing of the expansion tank are controlled to control the refrigerant quantity of the system;

wherein, the valve control module is configured to acquire the temperature in the tank under the condition of controlling the switch of the electromagnetic valve; judging whether the system is electrified for the first time; and correspondingly controlling the electromagnetic valve according to whether the system is electrified for the first time and the temperature in the box.

In some embodiments of the present disclosure, the solenoid valve control apparatus is configured to perform operations for implementing the solenoid valve control method according to any one of the embodiments described above.

a memory configured to store instructions;

a processor coupled to the memory, the processor configured to implement the solenoid valve control method described in any of the embodiments above based on the instructions stored in the memory.

According to another aspect of the present disclosure, there is provided an electrical apparatus including the solenoid valve control apparatus as described in any one of the embodiments above.

In some embodiments of the disclosure, the electrical device is a medical refrigerator.

According to another aspect of the present disclosure, there is provided a computer-readable storage medium storing computer instructions that, when executed by a processor, implement a control method as described in any one of the above embodiments.

Based on the aspects provided by the disclosure, the electromagnetic valve and the expansion tank are added between the low-temperature-stage compressor and the evaporator, the refrigerant quantity of the expansion tank control system can be controlled to be opened and closed through the electromagnetic valve, the exhaust pressure of the low-temperature-stage compressor is reduced by adjusting the refrigerant quantity when the compressor is started, and the tripping risk of the low-temperature-stage compressor is avoided while the frequency is increased rapidly.

Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments of the disclosure, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the present disclosure, and together with the description serve to explain the present disclosure. In the drawings:

Fig. 1 is a schematic diagram of some embodiments of an electrical device of the present disclosure.

FIG. 2 is a schematic diagram of some embodiments of a solenoid valve control method of the present disclosure.

FIG. 3 is a schematic diagram of other embodiments of a solenoid valve control method of the present disclosure.

FIG. 4 is a schematic diagram of still further embodiments of the solenoid valve control method of the present disclosure.

Fig. 5 and 6 are schematic diagrams of further embodiments of the solenoid valve control method of the present disclosure.

FIG. 7 is a schematic diagram of other embodiments of the solenoid valve control method of the present disclosure.

FIG. 8 is a schematic diagram of other embodiments of a solenoid valve control method of the present disclosure.

Fig. 9 is a schematic diagram of some embodiments of a solenoid valve control apparatus of the present disclosure.

Fig. 10 is a schematic structural view of other embodiments of the control device of the present disclosure.

Detailed Description

The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways and the spatially relative descriptions used herein are construed accordingly.

The inventors found through research that: the medical low-temperature refrigerator of the related art adopts a two-stage compressor, namely a high-temperature-stage compressor and a low-temperature-stage compressor, and in the starting process of the low-temperature-stage compressor, if the refrigerant quantity of a system is too large, the refrigerant quantity is large to indicate that the load of the system is increased, the pressure of the compressor is increased when the compressor is started, and when the pressure is high to a certain degree, the trip protection of the compressor can be initiated.

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

Fig. 1 is a schematic diagram of some embodiments of an electrical device of the present disclosure. As shown in fig. 1, the electrical apparatus 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.

In some embodiments of the present disclosure, the electrical device of the present disclosure may be an electrical device of a refrigerator, an air conditioner, or the like, including a high temperature-stage compressor and a low temperature-stage compressor.

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

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

In some embodiments of the present disclosure, a solenoid valve 5 and an expansion tank 4 are added between the low-temperature-stage compressor 3 and the evaporator 1, the expansion tank 4 controls the refrigerant amount of the system, the solenoid valve 5 controls the opening and closing of the expansion tank, and the discharge pressure of the low-temperature-stage compressor is relieved by adjusting the refrigerant amount when the compressor is started.

In some embodiments of the present disclosure, the expansion tank 4 is configured to increase the amount of refrigerant when the compressor is started; when the compressor is turned off, the refrigerant is stored.

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

In some embodiments of the present disclosure, the solenoid valve control device 6 is configured to obtain the in-tank temperature in the case of controlling the switching of the solenoid valve; judging whether the system is electrified for the first time; and correspondingly controlling the electromagnetic valve according to whether the system is electrified for the first time and the temperature in the box.

According to the low-temperature-level compressor and the evaporator, the electromagnetic valve and the expansion tank are additionally arranged between the low-temperature-level compressor and the evaporator, the expansion tank controls the refrigerant quantity of the system, the electromagnetic valve controls the expansion tank to be opened and closed, the exhaust pressure of the low-temperature-level compressor is reduced by adjusting the refrigerant quantity when the compressor is started, and the tripping risk of the low-temperature-level compressor is avoided while the frequency is quickly increased.

The solenoid valve control method and control apparatus of the present disclosure are described below with reference to specific embodiments.

FIG. 2 is a schematic diagram of some embodiments of a solenoid valve control method of the present disclosure. Preferably, the present embodiment may be performed by the solenoid valve control apparatus of the present disclosure or the electrical device of the present disclosure. The method may comprise at least one of steps 100 to 200, wherein:

and 100, controlling opening and closing of an expansion tank by controlling opening and closing of a solenoid valve, wherein the solenoid valve and the expansion tank are arranged between a low-temperature-stage compressor and an evaporator of the electrical equipment.

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

step 110, obtaining the temperature in the tank.

In some embodiments of the present disclosure, the in-box temperature may be an in-appliance temperature, for example: for a refrigerator, the in-box temperature is the in-refrigerator temperature.

And 120, correspondingly controlling the electromagnetic valve according to the temperature in the box.

In some embodiments of the present disclosure, step 120 may include step 121 and step 122,

wherein:

step 121, determining whether the system is powered on for the first time.

And step 122, correspondingly controlling the electromagnetic valve according to whether the system is powered on for the first time and the temperature in the box.

Step 200, controlling the refrigerant quantity of the system by controlling the opening and closing of the expansion tank.

FIG. 3 is a schematic diagram of other embodiments of a solenoid valve control method of the present disclosure. Preferably, the present embodiment may be performed by the solenoid valve control apparatus of the present disclosure or the electrical device of the present disclosure. The method of the embodiment of fig. 3 may comprise at least one of steps 1 to 11, wherein:

and step 1, judging whether the power-on state is the first power-on state. If not, executing the step 7 according to the non-first power-on logic processing; otherwise, if yes, continuing to judge whether the system is in a strong current state according to the first power-on logic processing, and executing the step 2.

And step 2, judging whether the whole machine is disconnected with strong electricity. If yes, processing according to the power-off state, and executing the step 8; otherwise, continuing to judge the state of the sensor in the box, and executing the step 3.

The function of judging whether the whole machine is disconnected from strong electricity is that 12V storage batteries are arranged on electric equipment such as a refrigerator and the like, and the electromagnetic valve is opened only under the strong electricity.

And 3, judging whether the temperature sensor in the box is normal or not. If yes, judging the temperature value in the box, and executing the step 4; otherwise, the system is powered on for the first time, and operates according to the fault logic of the temperature sensor in the box, and the step 7 is executed.

And step 4, judging whether the temperature value in the box is more than or equal to a first temperature threshold value in the box. If yes, the electromagnetic valve enters a first mode (mode 1), and step 5 is executed; otherwise, the solenoid valve enters a second mode (mode 0), and step 6 is performed.

In some embodiments of the present disclosure, the first in-tank temperature threshold may be 15 degrees celsius.

And 5, processing the electromagnetic valve according to a first mode, completing the first power-on of the system, and then executing the step 7.

In some embodiments of the present disclosure, if the temperature value in the tank is greater than or equal to the first temperature threshold in the tank, and the difference between the temperature in the tank and the set temperature is small, and the amount of the refrigerant may be properly reduced, the solenoid valve enters the first mode (mode 1), i.e., enters the power-on mode, and the solenoid valve performs the on-off operation, so that the solenoid valve may balance the refrigerant of the expansion tank and the pipeline.

In some embodiments of the present disclosure, the first mode is a power-on mode, the first mode including control logic for three stops.

In some embodiments of the present disclosure, the first mode is a start-stop (difference between the in-tank temperature and the set temperature is less than or equal to 3 ℃) phase.

When the embodiment of the disclosure is powered on for the first time, the system meets the conditions, the electromagnetic valve is started and stopped for three times, and the pressure of the storage tank and the pressure of the pipeline are balanced.

And 6, controlling the electromagnetic valve according to the second mode, executing the electromagnetic valve according to the normal control mode, completing the first power-on of the system, and then executing the step 7.

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

In some embodiments of the present disclosure, the second mode is a pull temperature (difference in case temperature and set temperature > 3 ℃) phase.

In some embodiments of the present disclosure, the step of controlling the solenoid valve according to the second mode may include: after the different ring temperatures in the temperature pulling stage meet the corresponding continuous operation time, the electromagnetic valve executes 6 times of 5-second 120-second cycles.

And 7, judging whether the display panel sends an electromagnetic valve closing command. If yes, performing the solenoid closing operation, and executing the step 8; otherwise, continuing to judge the display panel instruction, and executing the step 9.

And 8, closing the electromagnetic valve, restarting to judge the power-on state of the system, and executing the step 1.

And 9, judging whether the display panel sends an electromagnetic valve opening instruction. If yes, the electromagnetic valve is opened, and the step 10 is executed; otherwise, judging the running state of the electromagnetic valve according to the normal logic, and executing the step 11.

And 10, opening the electromagnetic valve, restarting to judge the power-on state of the system, and executing the step 1.

And 11, controlling the electromagnetic valve according to the second mode.

The present disclosure determines whether a user inputs an on or off solenoid valve command through a controller or a display panel, if so, executes according to the command, and if not, executes step 11 and the subsequent steps.

The method of controlling the solenoid valve according to the first mode or the second mode of the present disclosure will be specifically described below by way of specific examples.

FIG. 4 is a schematic diagram of still further embodiments of the solenoid valve control method of the present disclosure. Preferably, the present embodiment may be performed by the solenoid valve control apparatus of the present disclosure or the electrical device of the present disclosure. The method of the embodiment of fig. 4 (controlling the solenoid valve according to the first mode) may comprise at least one of the steps 41 to 43, wherein:

step 41, determining whether the current number of times of opening and closing the solenoid valve is smaller than a first number threshold N1. If so, the solenoid valve is cycled on and off, step 42 is performed, otherwise, the solenoid valve is closed, step 43 is performed.

In step 42, when the number of times of opening and closing the current solenoid valve is smaller than the first number threshold N1, the solenoid valve is controlled to perform one opening and closing in a manner of opening the first predetermined opening time t1 and stopping the first predetermined stopping time t2, and the number of times of opening and closing is accumulated, and then the step of determining whether the system is powered on for the first time (i.e. step 1 in the embodiment of fig. 3) is performed again.

In some embodiments of the present disclosure, the first predetermined on-time t1 is 20 seconds and the first predetermined off-time t2 is 5 seconds.

Step 43, in the case that the current number of times of opening and closing the solenoid valves is not less than the first number threshold N1, the step of determining whether the system is powered on for the first time (i.e., step 1 of the embodiment of fig. 3) is performed again.

In the embodiment of the disclosure, when the number of start/stop times is less than or equal to 3, the start/stop is executed once, so as to power up for the first time, and after the condition is met, the 3 start/stop operations are executed. When the number of start and stop is more than 3, the electromagnetic valve is closed to keep balance of the expansion tank and the pipeline refrigerant.

Fig. 5 and 6 are schematic diagrams of further embodiments of the solenoid valve control method of the present disclosure. Preferably, the present embodiment may be performed by the solenoid valve control apparatus of the present disclosure or the electrical device of the present disclosure. The method of the embodiment of fig. 5 and 6 (controlling the solenoid valve according to the second mode) may include at least one of steps 51 to 68, step 1 and step 5, wherein:

And step 51, judging whether the temperature sensor in the box is normal or not. If so, continuing to judge the temperature value, and executing step 52; otherwise, step 58 is performed.

Step 52, determining whether the temperature value of the in-tank temperature sensor is greater than or equal to a second in-tank temperature threshold, wherein the second in-tank temperature threshold is less than the first in-tank temperature threshold. If yes, continuing to judge the running state of the compressor, and executing step 53; otherwise, step 58 is performed.

In some embodiments of the present disclosure, the second in-tank temperature threshold is-40 degrees celsius.

Step 53, it is determined whether the low temperature stage compressor is started. If so, continuing to judge whether the motor runs to the target rotating speed, and executing the step 54; otherwise, step 58 is performed.

Step 54, it is determined whether the low temperature stage compressor is operating to a target rotational speed. If yes, recording the continuous running time of the low-temperature-stage compressor, and executing step 55; otherwise, step 58 is performed.

In some embodiments of the present disclosure, the continuous operation time of the low temperature stage compressor is a continuous operation time after the low temperature stage compressor reaches a target rotational speed.

Step 55, recording the continuous operation time of the low-temperature-stage compressor, then judging the ambient temperature value, and executing step 56.

Step 56, determining whether the continuous operation time of the low temperature stage compressor at different ambient temperatures meets the corresponding continuous operation time threshold. If the continuous operation time of the low temperature stage compressor at different ambient temperatures meets the corresponding continuous operation time threshold, then step 57 is performed; otherwise, if the continuous operation time of the low temperature stage compressor at the different ambient temperatures does not meet the corresponding continuous operation time threshold, step 59 is performed.

FIG. 7 is a schematic diagram of other embodiments of the solenoid valve control method of the present disclosure. Preferably, the present embodiment may be performed by the solenoid valve control apparatus of the present disclosure or the electrical device of the present disclosure. The method of the fig. 7 embodiment (e.g., step 56 of the fig. 5 embodiment) may include at least one of steps 561 through 551, wherein:

in step 561, it is determined whether the ambient temperature is equal to or higher than the first ring temperature threshold. If yes, continue to judge the exhaust bulb value, go to step 562; otherwise, the ambient temperature value continues to be determined, step 565 is performed.

In some embodiments of the present disclosure, the first ring temperature threshold may be 28 degrees celsius.

Step 562, it is determined whether the exhaust bulb is normal. If yes, continuing to judge the continuous running time of the low-temperature-stage compressor, and executing step 563; otherwise, step 564 is performed.

Step 563, determining whether the continuous operation time of the low-temperature-stage compressor is greater than or equal to a first predetermined time T1 when the ambient temperature is greater than or equal to a first ambient temperature threshold and the exhaust bulb is normal. If so, solenoid valve energization process control is entered, step 57 is executed, otherwise, step 59 is executed.

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

In step 564, when the ambient temperature is greater than or equal to the first ring temperature threshold and the exhaust bulb is abnormal, and when the ambient temperature is greater than or equal to the first ring temperature threshold and the exhaust bulb is abnormal, it is determined whether the continuous operation time of the low-temperature stage compressor is greater than or equal to a second predetermined time T2, where the second predetermined time T2 is greater than the first predetermined time T1. If so, solenoid valve energization process control is entered, step 57 is executed, otherwise, step 59 is executed.

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

Step 565, it is determined whether the ambient temperature is greater than or equal to a second ring temperature threshold. If yes, continuing to judge the exhaust temperature sensing bulb value, and executing step 566; otherwise, step 569 is performed.

In some embodiments of the present disclosure, the second ring temperature threshold may be 23 degrees celsius.

Step 566, determine if the exhaust bulb is normal. If yes, continuing to judge the continuous running time of the low-temperature-stage compressor, and executing step 567; otherwise, step 568 is performed.

In step 567, under the condition that 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 bulb is normal, it is determined whether the continuous operation time of the low-temperature stage compressor is greater than or equal to a third predetermined time T3, where 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, controlling the solenoid valve to enter an energization process control mode under the condition that the continuous operation time of the low-temperature-stage compressor is greater than or equal to a third predetermined time T3, controlling the solenoid valve according to the energization process control mode, and executing step 57; otherwise, step 59 is performed.

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

In step 568, if 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 bulb is abnormal, it is determined whether the continuous operation time of the low-temperature stage compressor is greater than or equal to a 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. Controlling the solenoid valve to enter an energization process control mode under the condition that the continuous operation time of the low temperature stage compressor is equal to or longer than a fourth predetermined time T4, controlling the solenoid valve according to the energization process control mode, and executing step 57; otherwise, step 59 is performed.

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

Step 569, determining whether the exhaust bulb is normal. If yes, continuing to judge the continuous running time of the low-temperature-stage compressor, and executing step 550; otherwise, step 551 is performed.

Step 550, determining whether the continuous operation time of the low-temperature-stage compressor is greater than or equal to a fifth predetermined time T5 when the ambient temperature is less than the second ambient temperature threshold and the exhaust bulb is normal, wherein the fifth predetermined time T5 is less than the third predetermined time T3. Controlling the solenoid valve to enter an energization process control mode under the condition that the continuous operation time of the low temperature stage compressor is greater than or equal to a fifth predetermined time T5, controlling the solenoid valve according to the energization process control mode, and executing step 57; otherwise, step 59 is performed.

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

In step 551, if the ambient temperature is less than the second ring temperature threshold and the exhaust bulb is abnormal, it is determined whether the continuous operation time of the low-temperature stage compressor is greater than or equal to a sixth predetermined time T6, where 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. And under the condition that the continuous running time of the low-temperature-stage compressor is greater than or equal to a sixth preset time, controlling the electromagnetic valve to enter an electrifying process control mode, and controlling the electromagnetic valve according to the electrifying process control mode.

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

The embodiment of the disclosure enters the power-on process control after meeting the continuous operation time requirement, and the electromagnetic valve enters 6 times of start and stop (the cycle control of opening 5 seconds and closing 120 seconds); if the continuous time is not satisfied, 6 start-stops are not entered. The solenoid valve performs a frequency limiting protection determination when executing an operation.

The above embodiments of the present disclosure differ in the determination thresholds for the different ambient temperatures (greater than 28, greater than 23, less than 23) for continuous operation times, because the higher the ring temperature, the longer the compressor will need to run smoothly.

In the abnormal condition of the exhaust gas temperature sensing bulb in the above embodiment of the present disclosure, the reason why the judgment threshold corresponding to the longer continuous operation time is required compared with the normal condition is that: under the abnormal condition of the exhaust temperature sensing bulb, the exhaust temperature is unknown, and the system is assumed to be in a relatively poor working condition.

Step 57, controlling the solenoid valve to enter an energization process control mode, and controlling the solenoid valve in accordance with the energization process control mode.

In some embodiments of the present disclosure, steps 56-57 may include: and controlling the electromagnetic valve to enter an electrifying process control mode according to the continuous running time, the ambient temperature and the exhaust temperature sensing bag state of the low-temperature-stage compressor, and controlling the electromagnetic valve according to the electrifying process control mode.

FIG. 8 is a schematic diagram of other embodiments of a solenoid valve control method of the present disclosure. Preferably, the present embodiment may be performed by the solenoid valve control apparatus of the present disclosure or the electrical device of the present disclosure. The method of the embodiment of fig. 8 (e.g., step 57 of any of the embodiments of fig. 5-7) may include at least one of steps 570-579, wherein:

step 570, determining whether the exhaust bulb is normal. If so, continuing to judge the exhaust temperature value, and executing a step 571; otherwise, if the exhaust bulb is abnormal, step 573 is performed.

In step 571, it is determined whether the exhaust temperature value is equal to or greater than a first exhaust temperature threshold. If yes, enter the frequency limiting protection mode, go to step 574; otherwise, go on to step 573;

in some embodiments of the present disclosure, the first exhaust temperature threshold may be 125 degrees celsius.

In step 572, it is determined whether the exhaust temperature value is less than or equal to a second exhaust temperature threshold, wherein the second exhaust temperature threshold is less than the first exhaust temperature threshold. If yes, the frequency limiting protection is exited, and step 573 is executed; otherwise, it is continuously determined whether to enter the frequency limiting protection, and step 575 is executed.

In some embodiments of the present disclosure, the second exhaust temperature threshold may be 123 degrees celsius.

In some embodiments of the present disclosure, the values of the first exhaust temperature threshold and the second exhaust temperature threshold are experimentally derived values.

In some embodiments of the present disclosure, the step of frequency limiting protection may be accomplished by maintaining the current operating frequency of the compressor from rising.

The frequency limiting protection mode of the present disclosure is used to protect the compressor and prevent the compressor from tripping.

Step 573, the frequency limiting protection state is exited, and step 575 is performed.

Step 574, enter the frequency limited protection mode, and then execute step 575.

Step 575, determine whether to enter a frequency limited protection mode. If so, the solenoid valve is closed, step 579 is performed, otherwise, the solenoid valve on-off state is determined, and step 576 is performed.

In step 576, it is determined whether the solenoid valve on-off cycle number reaches a second number threshold N2. If so, the solenoid valve is opened, executing step 578; otherwise, the solenoid valve on-off operation is performed, and step 577 is performed.

In some embodiments of the present disclosure, the second number threshold N2 is 6 times.

In some embodiments of the present disclosure, the solenoid valve on-off cycle is to control the solenoid valve to perform one on-off in a manner to open the second predetermined on-time t3 for a second predetermined off-time t 4.

In some embodiments of the present disclosure, the second predetermined on-time t3 is 5 seconds; the second predetermined stop time t4 is 120 seconds.

In step 577, the solenoid valve is closed for a second predetermined stop time t4 according to the second predetermined open time t3, and the number of start-stop cycles is accumulated, and then the system power-on state is restarted, and then step 1 of the embodiment of fig. 3 is performed, that is, the step of determining whether the system is powered on for the first time is performed again.

The above-mentioned embodiment of this disclosure judges solenoid valve start-stop cycle number of times, and the solenoid valve is to open the effect of solenoid valve after 6 start-stop cycles and lie in: the system is in a temperature pulling stage, and the refrigerant is completely released into the system, so that the refrigerating capacity is increased; slowly release the refrigerant to prevent the pressure from being too high.

Step 578, open the solenoid valve, then restart the determination of the power-on state of the system, and then execute step 1 of the embodiment of fig. 3, i.e. execute the step of determining whether the system is powered on for the first time again.

Step 579, closing the electromagnetic valve, and then restarting to determine the power-on state of the system, and then executing step 1 in the embodiment of fig. 3, that is, executing the step of determining whether the system is powered on for the first time.

Step 58, the continuous operation time of the low-temperature-stage compressor is cleared, and then the state of the temperature sensor in the tank is judged, and step 59 is executed.

Step 59, judging whether the temperature sensor in the box is normal. If the operation is normal, continuing to judge the continuous operation time of the low-temperature-stage compressor, and executing step 60; otherwise, the system operation state is determined, and step 62 is executed.

Steps 60 to 68, step 1 and step 5 of the embodiment of fig. 6 are described below with reference to fig. 6.

Step 60, judging whether the continuous running time of the low-temperature-stage compressor is greater than or equal to a seventh preset time T7. If yes, the electromagnetic valve enters into power-off control, and step 61 is executed; otherwise, the low temperature stage compressor operation state is determined, and step 63 is executed.

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

In step 61, the solenoid valve enters a power-off control mode (power-off control mode 2). Next, the operation state of the low temperature stage compressor is judged, and step 63 is executed.

In some embodiments of the present disclosure, de-energized control refers to energizing the solenoid valve for 1 minute and then remaining de-energized.

Step 62, it is determined whether the system is in an on-off phase. If yes, judging the continuous operation time of the low-temperature-stage compressor, executing step 60, otherwise, judging the operation state of the low-temperature-stage compressor, and executing step 63.

The open-shut stage of step 32 of the present disclosure is that when the difference between the in-tank temperature and the set temperature is < 3 ℃, it indicates that the system is running smoothly, and when the low-temperature-stage compressor is turned on again and continuously operated for 5 minutes, it enters into the power-off control.

Step 63, determining whether the low temperature stage compressor is in a shutdown state. If the machine is stopped, step 64 is performed; otherwise, the operation state of the solenoid valve is determined, and step 65 is executed.

Step 64, the continuous running time of the low-temperature stage compressor is cleared, and then step 65 is executed.

Step 65, it is determined whether the solenoid valve is brought into the energized process control state. If so, the solenoid valve enters an energized process control mode, executing step 57; otherwise, the solenoid valve operating state is continuously determined, and step 66 is performed.

Step 66, it is determined whether the solenoid valve enters the first mode (mode 1). If yes, controlling the electromagnetic valve according to a first mode, and executing step 5; otherwise, the operation mode of the electromagnetic valve is continuously judged, and step 67 is executed.

In some embodiments of the present disclosure, step 5 may include the steps of the embodiment of fig. 4, where the first mode, i.e., the power-on mode, refers to the process of three start-stop loop decisions.

Step 67, it is determined whether the solenoid valve enters the power-off control mode (power-off control 2). If so, then step 68 is performed; otherwise, the system power-on state is restarted to be judged, and step 1 of the embodiment of fig. 3 is executed.

Steps 65 through 67 of the above embodiments of the present disclosure are used to determine the operating state of the solenoid valve.

Step 68, the solenoid valve is opened for a third predetermined opening time t5, and then the system power-on state is restarted to be judged, and step 1 of the embodiment of fig. 3 is performed.

In some embodiments of the present disclosure, the third predetermined on-time t5 may be 1 minute.

The electromagnetic valve of the embodiment of the disclosure is opened for 1 minute and then closed, so that the pressure of the refrigerant tank and the pressure of the pipeline can be balanced.

According to the embodiment of the disclosure, through the control of the electromagnetic valve and the expansion tank, the exhaust pressure of the low-temperature-stage compressor can be reduced, and the tripping risk of the low-temperature-stage compressor is avoided while the frequency is increased rapidly. In the above embodiments of the present disclosure, the refrigerant amount increases, the pull Wen Sudu becomes faster, and the compressor pressure is controlled not to reach the trip value.

Fig. 9 is a schematic diagram of some embodiments of a solenoid valve control apparatus of the present disclosure. As shown in fig. 9, the solenoid valve control apparatus 90 of the present disclosure may include a valve control module 91 in which:

a valve control module 91 configured to control opening and closing of the expansion tank by controlling opening and closing of a solenoid valve, wherein the solenoid valve and the expansion tank are disposed between the low-temperature-stage compressor and the evaporator of the electrical apparatus; and the opening and closing of the expansion tank are controlled to control the refrigerant quantity of the system.

In some embodiments of the present disclosure, the valve control module 91, in controlling the opening and closing of the solenoid valve, is configured to acquire the in-tank temperature; and correspondingly controlling the electromagnetic valve according to the temperature in the box.

In some embodiments of the present disclosure, the valve control module 91, with corresponding control of the solenoid valve based on the in-tank temperature, is configured to determine if the system is first powered on; and correspondingly controlling the electromagnetic valve according to whether the system is electrified for the first time and the temperature in the box.

In some embodiments of the present disclosure, the valve control module 91 is configured to determine, in a case where the solenoid valve is controlled accordingly according to whether the system is first powered on and the in-tank temperature, whether the in-tank temperature is equal to or greater than a first in-tank temperature threshold in the case where the system is first powered on; controlling the electromagnetic valve according to a first mode under the condition that the temperature in the box is larger than or equal to a first temperature threshold value in the box; and controlling the electromagnetic valve according to the second mode when the temperature in the box is smaller than the first temperature threshold value in the box.

In some embodiments of the present disclosure, the valve control module 91, in controlling the solenoid valve in the first mode, is configured to determine whether the current number of solenoid valve stops is less than a first number threshold; closing the electromagnetic valve under the condition that the current opening and closing times of the electromagnetic valve are not less than a first quantity threshold value, and then re-executing the operation of judging whether the system is electrified for the first time; and under the condition that the current opening and stopping times of the electromagnetic valve are smaller than a first quantity threshold value, controlling the electromagnetic valve to execute one-time opening and stopping according to the mode of opening a first preset opening time and stopping a first preset stopping time, accumulating the opening and stopping times, and then re-executing the operation of judging whether the system is electrified for the first time.

In some embodiments of the present disclosure, the valve control module 91, in the event that the solenoid valve is controlled accordingly based on whether the system is first powered up and the in-tank temperature, is further configured to control the solenoid valve in a second mode in the event that the system is not first powered up.

In some embodiments of the present disclosure, the valve control module 91, in controlling the solenoid valve in accordance with the second mode, is configured to determine whether the in-tank temperature is greater than or equal to a second in-tank temperature threshold, wherein the second in-tank temperature threshold is less than the first in-tank temperature threshold; judging whether the low-temperature-stage compressor is started and operated to a target rotating speed under the condition that the temperature in the tank is greater than or equal to a second temperature threshold value in the tank; recording the continuous operation time of the low-temperature-stage compressor under the condition that the low-temperature-stage compressor is started and operated to a target rotating speed; acquiring the ambient temperature and the exhaust temperature sensing bulb state; and controlling the electromagnetic valve to enter an electrifying process control mode according to the continuous running time, the ambient temperature and the exhaust temperature sensing bag state of the low-temperature-stage compressor, and controlling the electromagnetic valve according to the electrifying process control mode.

In some embodiments of the present disclosure, the valve control module 91 controls the solenoid valve to enter the energization process control mode according to the continuous operation time of the low temperature stage compressor, the ambient temperature, and the exhaust bulb state, and is configured to determine whether the continuous operation time of the low temperature stage compressor is equal to or greater than a first predetermined time in a case where the ambient temperature is equal to or greater than a first ring temperature threshold and the exhaust bulb is normal in a case where the solenoid valve is controlled according to the energization process control mode; and under the condition that the continuous running time of the low-temperature-stage compressor is larger than or equal to a first preset time, controlling the electromagnetic valve to enter an electrifying process control mode, and controlling the electromagnetic valve according to the electrifying process control mode.

In some embodiments of the present disclosure, the valve control module 91, when controlling the solenoid valve to enter the energized process control mode according to the continuous operation time of the low temperature stage compressor, the ambient temperature, and the exhaust bulb state, is configured to determine whether the continuous operation time of the low temperature stage compressor is equal to or greater than a second predetermined time when the ambient temperature is equal to or greater than a first ambient temperature threshold and the exhaust bulb is abnormal, in the case where the solenoid valve is controlled according to the energized process control mode, wherein the second predetermined time is greater than the first predetermined time; and under the condition that the continuous running time of the low-temperature-stage compressor is more than or equal to a second preset time, controlling the electromagnetic valve to enter an electrifying process control mode, and controlling the electromagnetic valve according to the electrifying process control mode.

In some embodiments of the present disclosure, the valve control module 91 is configured to determine whether the continuous operation time of the low-temperature stage compressor is equal to or greater than a third predetermined time when the ambient temperature is equal to or greater than a first ring temperature threshold value and the exhaust bulb is normal, in a case where the solenoid valve is controlled according to the energization process control mode, in which the solenoid valve is controlled according to the continuous operation time of the low-temperature stage compressor, the ambient temperature and the exhaust bulb state, wherein the second ring temperature threshold value is less than the first ring temperature threshold value, and the third predetermined time is less than the first predetermined time; and under the condition that the continuous running time of the low-temperature-stage compressor is more than or equal to a third preset time, controlling the electromagnetic valve to enter an electrifying process control mode, and controlling the electromagnetic valve according to the electrifying process control mode.

In some embodiments of the present disclosure, the valve control module 91 is configured to determine whether the continuous operation time of the low-temperature stage compressor is equal to or longer than a fourth predetermined time, in a case where the ambient temperature is equal to or longer than the first ring temperature threshold value and the exhaust bulb is abnormal, in a case where the solenoid valve is controlled according to the energization process control mode, in which the solenoid valve is controlled according to the continuous operation time of the low-temperature stage compressor, the ambient temperature, and the exhaust bulb state, wherein the fourth predetermined time is less than the second predetermined time, and the fourth predetermined time is greater than the third predetermined time; and under the condition that the continuous running time of the low-temperature-stage compressor is more than or equal to a fourth preset time, controlling the electromagnetic valve to enter an electrifying process control mode, and controlling the electromagnetic valve according to the electrifying process control mode.

In some embodiments of the present disclosure, the valve control module 91 controls the solenoid valve to enter the energized process control mode according to the continuous operation time of the low temperature stage compressor, the ambient temperature, and the exhaust bulb state, and is configured to determine whether the continuous operation time of the low temperature stage compressor is equal to or greater than a fifth predetermined time when the ambient temperature is less than the second ring temperature threshold and the exhaust bulb is normal, with the fifth predetermined time being less than the third predetermined time, in the case of controlling the solenoid valve according to the energized process control mode; and under the condition that the continuous running time of the low-temperature-stage compressor is greater than or equal to a fifth preset time, controlling the electromagnetic valve to enter an electrifying process control mode, and controlling the electromagnetic valve according to the electrifying process control mode.

In some embodiments of the present disclosure, the valve control module 91 is configured to determine whether the continuous operation time of the low-temperature-stage compressor is equal to or longer than a sixth predetermined time, in which the sixth predetermined time is less than a fourth predetermined time, and the sixth predetermined time is greater than a fifth predetermined time, in the case that the solenoid valve is controlled according to the energization process control mode in accordance with the continuous operation time of the low-temperature-stage compressor, the ambient temperature, and the exhaust bulb state; and under the condition that the continuous running time of the low-temperature-stage compressor is greater than or equal to a sixth preset time, controlling the electromagnetic valve to enter an electrifying process control mode, and controlling the electromagnetic valve according to the electrifying process control mode.

In some embodiments of the present disclosure, the valve control module 91 is configured to determine whether the exhaust bulb is normal in the case of controlling the solenoid valve in the power-on process control mode; under the condition that the exhaust temperature sensing bag is abnormal, exiting the frequency limiting protection mode; judging whether to enter a frequency limiting protection mode; under the condition of entering a frequency limiting protection mode, closing the electromagnetic valve, and then re-executing the operation of judging whether the system is electrified for the first time; under the condition that the frequency limiting protection mode is not entered, judging whether the current electromagnetic valve on-off times are smaller than a second number threshold value or not; opening the electromagnetic valve under the condition that the current opening and closing times of the electromagnetic valve are not less than a second number threshold value, and then re-executing the operation of judging whether the system is electrified for the first time; and under the condition that the current opening and stopping times of the electromagnetic valve are smaller than a second number threshold, controlling the electromagnetic valve to execute one-time opening and stopping according to the mode of opening a second preset opening time and stopping a second preset stopping time, accumulating the opening and stopping times, and then re-executing the operation of judging whether the system is electrified for the first time.

In some embodiments of the present disclosure, the valve control module 91, in controlling the solenoid valve in accordance with the power-on process control mode, is further configured to determine whether the exhaust temperature is equal to or greater than a first exhaust temperature threshold in the event that the exhaust bulb is normal; when the exhaust temperature is greater than or equal to a first exhaust temperature threshold value, a frequency limiting protection mode is entered, and then an operation of judging whether to enter the frequency limiting protection mode is executed; judging whether the exhaust temperature is smaller than or equal to a second exhaust temperature threshold value under the condition that the exhaust temperature is smaller than a first exhaust temperature threshold value, wherein the second exhaust temperature threshold value is smaller than the first exhaust temperature threshold value; performing an operation of judging whether to enter a frequency limiting protection mode in a case where the exhaust temperature is equal to or less than a second exhaust temperature threshold; in the case where 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 an operation of determining whether to enter the frequency limiting protection mode is performed.

In some embodiments of the present disclosure, the valve control module 91, in controlling the solenoid valve in the second mode, is further configured to determine whether the in-tank temperature sensor is malfunctioning; judging whether the continuous operation time of the low-temperature-stage compressor is more than or equal to a seventh preset time under the condition that the temperature sensor in the box fails, wherein the seventh preset time is less than the fifth preset time; judging whether the low-temperature-stage compressor is stopped or not under the condition that the continuous running time of the low-temperature-stage compressor is less than a seventh preset time; judging whether the electromagnetic valve enters an electrifying process control mode under the condition that the low-temperature-stage compressor is not stopped; when the solenoid valve enters the energization process control mode, the solenoid valve is controlled in accordance with the energization process control mode.

In some embodiments of the present disclosure, the valve control module 91, in the case of controlling the solenoid valve in the second mode, is further configured to determine whether the solenoid valve enters the first mode if the solenoid valve does not enter the energized process control mode; in the case where the solenoid valve enters the first mode, performing an operation of controlling the solenoid valve in accordance with the first mode; judging whether the electromagnetic valve enters a power-off control mode or not under the condition that the electromagnetic valve does not enter the first mode;

under the condition that the electromagnetic valve enters a power-off control mode, controlling the electromagnetic valve to be opened for a third preset opening time and then closed, and then re-executing the operation of judging whether the system is electrified for the first time; and under the condition that the electromagnetic valve does not enter the power-off control mode, re-executing the operation of judging whether the system is electrified for the first time.

In some embodiments of the present disclosure, the valve control module 91, in the case of controlling the solenoid valve in accordance with the second mode, is further configured to determine whether the system is in an on-off phase in the case of no failure of the in-tank temperature sensor; executing the operation of judging whether the low-temperature-stage compressor is stopped or not under the condition that the system is not in the start-stop stage; performing an operation of judging whether the continuous operation time of the low-temperature-stage compressor is greater than or equal to a seventh predetermined time in a case that the system is in an on-off stage; under the condition that the continuous running time of the low-temperature-stage compressor is greater than or equal to a seventh preset time, controlling the electromagnetic valve to enter a power-off control mode, and then executing the operation of judging whether the low-temperature-stage compressor is stopped; when the low-temperature-stage compressor is stopped, the continuous operation time of the low-temperature-stage compressor is cleared, and then an operation of judging whether the solenoid valve enters the energization process control mode is performed.

In some embodiments of the present disclosure, the valve control module 91 is further configured to determine whether to receive a solenoid valve control instruction sent by the display panel when the system is not powered on for the first time, in a case of performing corresponding control on the solenoid valve according to whether the system is powered on for the first time and the temperature in the tank; under the condition that an electromagnetic valve control instruction sent by a display panel is received, opening the electromagnetic valve or closing the electromagnetic valve according to the electromagnetic valve control instruction, and then re-executing the operation of judging whether the system is electrified for the first time; and under the condition that the electromagnetic valve control instruction sent by the display panel is not received, performing an operation of judging whether the temperature in the box is more than or equal to a second temperature threshold value in the box.

In some embodiments of the present disclosure, the solenoid valve control apparatus is configured to perform operations for implementing the solenoid valve control method described in any of the embodiments described above (e.g., any of fig. 2-8).

According to the control device disclosed by the embodiment of the disclosure, the exhaust pressure of the compressor during starting can be effectively reduced, and further the compressor is prevented from tripping.

Fig. 10 is a schematic structural view of other embodiments of the control device of the present disclosure. As shown in fig. 10, the control device includes a memory 101 and a processor 102.

The memory 101 is configured to store instructions, and the processor 102 is coupled to the memory 101, the processor 102 being configured to implement the solenoid valve control method described in any of the embodiments (e.g., any of fig. 2-8) above based on the instructions stored by the memory.

As shown in fig. 10, the control apparatus further includes a communication interface 103 for information interaction with other devices. Meanwhile, the control device further comprises a bus 104, and the processor 102, the communication interface 103 and the memory 101 perform communication with each other through the bus 104.

Memory 101 may comprise high-speed RAM memory or may further comprise non-volatile memory (non-volatile memory), such as at least one disk memory. Memory 101 may also be a memory array. Memory 101 may also be partitioned and the blocks may be combined into virtual volumes according to certain rules.

Further, the processor 102 may be a central processing unit CPU, or may be an application specific integrated circuit ASIC, or one or more integrated circuits configured to implement embodiments of the present disclosure.

According to another aspect of the disclosure, there is provided a computer readable storage medium storing computer instructions that, when executed by a processor, implement a control method as described in any of the embodiments above (e.g., any of fig. 2-8).

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

It will be apparent to those skilled in the art that embodiments of the present disclosure may be provided as a method, apparatus, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The solenoid valve control apparatus and valve control modules described above may be implemented as general purpose processors, programmable Logic Controllers (PLCs), digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof, for performing the functions described herein.

Thus far, the present disclosure has been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.

Those of ordinary skill in the art will appreciate that all or a portion of the steps implementing the above embodiments may be implemented by hardware, or may be implemented by a program indicating that the relevant hardware is implemented, where the program may be stored on a non-transitory computer readable storage medium, where the storage medium may be a read-only memory, a magnetic disk or optical disk, etc.

The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A solenoid valve control method comprising:

the opening and closing of the expansion tank are controlled, so that the refrigerant quantity of the system is controlled;

wherein, the switch of control solenoid valve includes:

acquiring the temperature in the box;

judging whether the system is electrified for the first time;

and correspondingly controlling the electromagnetic valve according to whether the system is electrified for the first time and the temperature in the box.

2. The solenoid valve control method according to claim 1, wherein the corresponding control of the solenoid valve according to whether the system is first powered on and the temperature in the tank comprises:

3. The solenoid valve control method according to claim 2, wherein the controlling the solenoid valve in the first mode includes:

4. The solenoid valve control method according to claim 3, wherein the corresponding control of the solenoid valve according to whether the system is first powered on and the temperature in the tank comprises:

5. The electromagnetic valve control method according to any one of claims 2 to 4, wherein the controlling the electromagnetic valve in the second mode includes:

6. The solenoid valve control method of claim 5, wherein the controlling the solenoid valve to enter the energization process control mode according to the continuous operation time of the low temperature stage compressor, the ambient temperature, and the exhaust bulb state, the controlling the solenoid valve according to the energization process control mode includes at least one of the following steps:

7. The solenoid valve control method of claim 6, wherein the controlling the solenoid valve to enter the energization process control mode according to the continuous operation time of the low temperature stage compressor, the ambient temperature, and the exhaust bulb state, the controlling the solenoid valve according to the energization process control mode further comprises at least one of the steps of:

8. The solenoid valve control method of claim 7, wherein the controlling the solenoid valve to enter the energization process control mode according to the continuous operation time of the low temperature stage compressor, the ambient temperature, and the exhaust bulb state, the controlling the solenoid valve according to the energization process control mode further comprises at least one of the steps of:

9. The solenoid valve control method according to claim 5, wherein the controlling the solenoid valve in the energization process control mode includes:

judging whether the exhaust temperature sensing bag is normal or not;

judging whether to enter a frequency limiting protection mode;

10. The solenoid valve control method according to claim 9, wherein the controlling the solenoid valve in accordance with the energization process control mode further comprises:

11. The solenoid valve control method according to claim 5, wherein the controlling the solenoid valve in the second mode further comprises:

judging whether the temperature sensor in the box fails or not;

12. The solenoid valve control method according to claim 11, wherein the controlling the solenoid valve in the second mode further comprises:

13. The solenoid valve control method according to claim 12, wherein the controlling the solenoid valve in the second mode further comprises:

14. The electromagnetic valve control method according to any one of claims 2 to 4, wherein the corresponding control of the electromagnetic valve according to whether the system is first powered on and the temperature in the tank further includes:

15. A solenoid valve control apparatus comprising:

wherein, the valve control module is configured to obtain the temperature in the box under the condition of controlling the switch of the electromagnetic valve; judging whether the system is electrified for the first time; and correspondingly controlling the electromagnetic valve according to whether the system is electrified for the first time and the temperature in the box.

16. The solenoid valve control apparatus according to claim 15, wherein the solenoid valve control apparatus is configured to perform operations to implement the solenoid valve control method according to any one of claims 2 to 14.

17. A solenoid valve control apparatus comprising:

a memory configured to store instructions;

a processor coupled to the memory, the processor configured to implement the solenoid valve control method of any one of claims 1 to 14 based on instruction execution stored in the memory.

18. An electrical apparatus comprising the electromagnetic valve control device according to any one of claims 15 to 17.

19. The electrical device of claim 18, wherein the electrical device is a medical refrigerator.

20. A computer readable storage medium storing computer instructions which, when executed by a processor, implement the solenoid valve control method of any one of claims 1 to 14.