A method, system, device and storage medium for controlling charging and exhausting of a refrigerator

Abstract

The present application discloses a method, system, device and storage medium for controlling the charging and exhaust of a refrigerator, and relates to the technical field of refrigerators. The method includes: controlling the charging and exhaust system to enter the charging state to fill the charging port of the refrigerator with gas; controlling the motor operation of the refrigerator to make the gas flow inside the refrigerator; setting the minimum temperature drop value when the refrigerator is running to be higher than the current ambient dew point; when the refrigerator reaches a preset end condition, controlling the refrigerator to stop; switching the charging and exhaust system to the exhaust state to discharge the mixed gas in the refrigerator. Through the content of this application, the air inside the refrigerator can be fully replaced, the number of replacements and the replacement pressure can be reduced, the purity of the final helium filling can be improved, and the use consumption of nitrogen can be reduced, thereby reducing the cost of use.

Description

Technical Field

[0001] The present disclosure relates to the technical field of refrigerators, and in particular to a refrigerator charging and exhaust control method, system, device, and storage medium. Background Art

[0002] The Stirling refrigerator operates by compressing gas in a compression unit, causing it to expand and compress at the regenerator, exchanging heat. This reduces the cold-end temperature to the chip's operating temperature for infrared imaging. Helium purity plays a crucial role in the refrigerator's efficiency and long-term reliability. Currently, helium filling and exhaust methods use gas displacement, making it difficult to displace gas trapped in blind holes and on component surfaces, thus impacting the refrigerator's lifespan and operating efficiency.

[0003] In the prior art, the refrigerant filling and exhaust process typically involves high-pressure gas flowing from a helium cylinder into the refrigerator cabinet through a charging valve, causing the helium to mix with the air inside the cabinet. The valve then switches the gas path to discharge the helium that has entered the cabinet. This process is repeated to improve the purity of the helium inside the refrigerator. However, the complex internal shape of the refrigerator, with blind spots such as blind holes and wire mesh, makes it difficult for helium to mix with air, thereby reducing the replacement effect. Using high-pressure repeated replacement to improve nitrogen purity results in repeated high-pressure impacts on the refrigerator interior, which can easily cause internal parts to shift and affect assembly relationships. Furthermore, increasing the pressure and the number of replacements increases helium consumption, which is also disadvantageous from a manufacturing cost perspective. Summary of the Invention

[0004] The present disclosure provides a refrigerator charging and exhaust control method, system, device and storage medium, which can fully replace the air inside the refrigerator, reduce the number of replacements and replacement pressure, improve the purity of the final helium filling, and reduce the use consumption of nitrogen, thereby reducing the cost of use.

[0005] In a first aspect, the present disclosure provides a method for controlling the charging and exhausting of a refrigerator, wherein the refrigerator includes a refrigerator body and a motor for driving the refrigerator body; the charging port of the refrigerator is connected to a charging and exhausting system; the control method includes the following steps:

[0006] Controlling the charging and exhaust system to enter a charging state to charge gas into the charging port of the refrigerator;

[0007] Controlling the operation of the motor of the refrigerator to allow the gas inside the refrigerator to flow; setting the minimum temperature drop value when the refrigerator is running to be higher than the current ambient dew point;

[0008] When the operation of the refrigerator reaches a preset end condition, controlling the refrigerator to stop;

[0009] The charging and exhaust system is switched to the exhaust state to discharge the mixed gas in the refrigerator.

[0010] In some embodiments, controlling the operation of the motor of the refrigerator includes: controlling the motor of the refrigerator to cyclically operate under preset operating conditions so that the refrigerator operates intermittently;

[0011] When the operation of the refrigerator reaches a preset end condition, controlling the refrigerator to stop includes: when the number of cycles of the operation of the refrigerator motor reaches a preset end number, controlling the refrigerator to stop.

[0012] In some embodiments, controlling the operation of the motor of the refrigerator includes:

[0013] controlling a motor of the refrigerator to operate at a first speed so that the refrigerator circulates internal gas;

[0014] When the duration of the motor running at the first speed reaches a preset cycle operation duration, the motor of the refrigerator is controlled to run at a second speed so that the gas in the refrigerator flows rapidly until the duration of the motor running at the second speed continues to reach a preset high-speed operation duration.

[0015] In some embodiments, during the operation of the motor controlling the refrigerator, the first speed is lower than the second speed; and the operating time of the first speed is longer than the operating time of the second speed.

[0016] In some embodiments, before the step of controlling the operation of the motor of the refrigerator, the control method includes:

[0017] timing the charging time of the refrigerator;

[0018] Determine whether the inflation time reaches a preset time. If so, enter the step of controlling the motor operation of the refrigerator.

[0019] In some embodiments, before switching the charging and exhaust system to the exhaust state, the method further comprises:

[0020] timing the duration of the refrigeration machine stopping operation;

[0021] When the duration of the refrigerator stopping operation reaches the preset shutdown duration, the step of switching the charging and exhaust system to the exhaust state is entered.

[0022] In some embodiments, the inflation and exhaust system cyclically performs inflation and exhaust operations; the control method further includes: after the step of switching the inflation and exhaust system to the exhaust state to discharge the mixed gas in the refrigerator, controlling the inflation and exhaust system to cyclically operate according to the preset inflation and exhaust time.

[0023] In the second aspect, the present disclosure provides a refrigerator charging and exhaust control system, comprising a refrigerator, a charging and exhaust system, and a control unit; the charging hole of the refrigerator is connected to the air circuit of the charging and exhaust system; the refrigerator and the charging and exhaust system are both connected to the control unit, and the control unit is used to execute the steps of the control method described in the above aspect.

[0024] In a third aspect, the present disclosure provides a control device, comprising a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of the method described in the above aspect.

[0025] In a fourth aspect, the present disclosure provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of the method described in the above aspects when executed by a processor.

[0026] In a fifth aspect, the present disclosure provides a computer program product, comprising a computer program, which implements the steps of the method described in the above aspects when executed by a processor.

[0027] The present disclosure provides a refrigerator charging and exhaust control method, system, device and storage medium, the control method comprising: controlling the charging and exhaust system to enter the charging state to charge the charging port of the refrigerator; controlling the motor of the refrigerator to operate so that the gas inside the refrigerator flows; setting the minimum temperature drop value when the refrigerator is running to be higher than the current ambient dew point; controlling the refrigerator to stop when the operation of the refrigerator reaches a preset end condition; switching the charging and exhaust system to the exhaust state to discharge the mixed gas in the refrigerator. By putting the refrigerator in the operating state during charging, the internal gas circulates, driving the compression piston and regenerator of the refrigerator to intermittently reciprocate, repeatedly squeezing the dead volume in the refrigerator, so that the gas entering from the charging port can fully purge the gas on the surface of the internal parts and fully mix with the internal air, thereby improving the replacement effect, so that it is discharged after mixing with the gas remaining in the dead volume of the refrigerator, fully replacing the air inside the refrigerator, and improving the purity of the helium finally filled. By running the refrigerator motor at variable speed, the gas is first circulated at a low speed, so that the charged gas is fully mixed with the air inside the refrigerator. Then, the refrigerator is run at a high speed so that the air flow quickly flows over the surface of the workpiece, thereby taking away the gas attached to the surface of the part, so as to fully replace the air inside the refrigerator and improve the purity of the final nitrogen charge. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Hereinafter, the present disclosure will be described in more detail based on embodiments and with reference to the accompanying drawings:

[0029] Figure 1 A flow chart of a refrigerator charging and exhaust control method provided by an embodiment of the present disclosure;

[0030] Figure 2 The embodiment of the present disclosure corresponds to Figure 1 An exemplary flow chart of step S2 in FIG.

[0031] Figure 3 This is an exemplary block diagram of a refrigerator charging and exhaust control system provided in the second embodiment of the present disclosure;

[0032] Figure 4 This is an exemplary bar graph of motor speed fluctuations in the application example provided in the third embodiment of the present disclosure;

[0033] Figure 5 A schematic block diagram of a control device provided in an embodiment of the present disclosure;

[0034] Figure 6 A schematic diagram of a computer-readable storage medium provided in an embodiment of the present disclosure.

[0035] In the drawings, like components are given like reference numerals, and the drawings are not drawn to scale. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, and to fully understand and implement how the present disclosure applies technical means to solve technical problems and achieve the corresponding technical effects, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. The embodiments of the present disclosure and the various features in the embodiments can be combined with each other without conflict, and the technical solutions formed are all within the scope of protection of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present disclosure.

[0037] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0038] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0039] Infrared detectors, characterized by passive detection, high sensitivity, and strong environmental adaptability, are widely used in military reconnaissance, missile systems, and civilian environmental monitoring. In recent years, infrared applications have placed higher demands on the size, weight, power consumption, and service life of detector components. The refrigerator is a crucial component of cooled infrared detectors and crucial to their longevity.

[0040] The working principle of a Stirling refrigerator is that the compression unit compresses gas, causing the gas to compress and expand at the regenerator end, exchanging heat and causing the temperature of the cold end to drop to the chip operating temperature for infrared imaging. Helium purity plays a vital role in the two key indicators of refrigerator efficiency and long-term reliability. Currently, the gas replacement method is used for inflation and exhaust. Gas attached to some blind holes and parts surfaces is difficult to replace. This affects the lifespan and efficiency of the refrigerator. The existing inflation and exhaust method is to inflate the refrigerator body from a helium cylinder through an inflation valve body to mix the helium with the air inside the box. The valve body then discharges the helium that has rushed into the box through the gas path switching. This step is repeated to improve the purity of the helium inside the refrigerator; or the purity of the gas inside the refrigerator can be improved by increasing the pressure and the number of replacements. However, the internal shape of the refrigerator is complex, the number of parts is large, and there are blind holes, wire mesh and other dead corners. Helium is not easy to mix with air, which reduces the replacement effect. Repeated impact on the interior of the refrigerator under high pressure will affect the fit between the parts, causing internal parts to shift and affecting the assembly relationship. In addition, pressurization and increasing the number of replacements will increase the amount of helium used, which is also disadvantageous from the perspective of manufacturing cost.

[0041] An embodiment of the present disclosure provides a method for controlling the charging and exhaust of a refrigerator, wherein the refrigerator includes a refrigerator body and a motor for driving the refrigerator body to operate; the charging port of the refrigerator is connected to the charging and exhaust system, and the control method includes the following steps: controlling the charging and exhaust system to enter the charging state to charge gas into the charging port of the refrigerator; controlling the motor of the refrigerator to operate to allow the gas inside the refrigerator to flow; setting the minimum temperature drop value when the refrigerator is running to be higher than the current ambient dew point; when the operation of the refrigerator reaches a preset end condition, controlling the refrigerator to stop; switching the charging and exhaust system to the exhaust state to discharge the mixed gas in the refrigerator. By keeping the refrigerator in operation during inflation, the internal gas circulates, driving the compression piston and regenerator of the refrigerator to intermittently reciprocate, repeatedly squeezing the dead volume inside the refrigerator, so that the gas entering from the inflation port can fully purge the gas on the surface of the internal parts and fully mix with the internal air, thereby improving the replacement effect. The gas is then mixed with the gas retained in the dead volume of the refrigerator and then discharged, fully replacing the air inside the refrigerator, improving the purity of the final helium filling, and reducing the pressure and number of replacements during replacement, thereby reducing manufacturing costs.

[0042] Example 1

[0043] Figure 1 This is a flow chart of a refrigerator charging and exhaust control method provided by an embodiment of the present disclosure. Figure 1 As shown, a refrigerator charging and exhaust control method includes steps S1-S4, specifically including:

[0044] S1. Control the charging and exhaust system to enter a charging state to charge gas into the charging port of the refrigerator.

[0045] In some embodiments, the command for controlling the charging and exhaust system to enter the charging state may be input by a worker or automatically generated based on the operating status of the refrigerator. In this embodiment, step S1 is initiated in response to a request for charging and exhausting the refrigerator, thereby charging gas to replace the air inside the refrigerator. The charging gas is nitrogen.

[0046] In some embodiments, when charging gas into the charging port of the refrigerator, the control method further includes: timing the charging time of the refrigerator;

[0047] Determine whether the inflation time reaches the preset time. If so, proceed to step S2.

[0048] Among them, the preset time is 5S to ensure that the charged gas meets the amount of initial operation, and then enter step S2 to control the operation of the refrigerator to fully mix the charged gas with the air inside the refrigerator.

[0049] S2. Controlling the operation of the motor of the refrigerator to allow the gas inside the refrigerator to flow; setting the minimum temperature drop value when the refrigerator is running to be higher than the current ambient dew point;

[0050] In some embodiments, controlling the operation of the refrigerator's motor includes controlling the refrigerator's motor to cycle under preset operating conditions, thereby causing the refrigerator to operate intermittently. The intermittent operation of the refrigerator can drive the compression piston and regenerator to intermittently reciprocate, repeatedly compressing the dead volume within the refrigerator. This allows gas entering through the charging port to fully purge gas from the surfaces of internal components, allowing the charged gas to fully mix with the remaining gas in the refrigerator, thereby improving the replacement effect.

[0051] Furthermore, the preset condition is to control the motor of the refrigerator to operate at a variable speed.

[0052] Specifically, the motor of the refrigerator is controlled to operate, such as Figure 2 Shown, including:

[0053] S21, controlling the motor of the refrigerator to operate at a first speed so that the refrigerator circulates the internal gas;

[0054] S22. When the duration of the motor running at the first speed reaches a preset cycle operation duration, control the motor of the refrigerator to run at a second speed so that the gas in the refrigerator flows rapidly, until the duration of the motor running at the second speed continues to reach a preset high-speed operation duration.

[0055] Among them, the first speed is lower than the second speed; the operating time of the first speed is longer than the operating time of the second speed, so that the internal gas is fully circulated by the refrigerator running at the first speed, and then the gas is quickly flowed through the surface of the workpiece by the refrigerator running at the second speed, thereby taking away the gas attached to the surface of the part, improving the mixing degree of the gas and the internal air, and thus improving the replacement effect.

[0056] In this embodiment, the rotation speed of the motor is between 0 and 5000 rpm.

[0057] S3. When the operation of the refrigerator reaches a preset end condition, the refrigerator is controlled to stop.

[0058] In some embodiments, step S3 includes: when the number of cycles of the motor of the refrigerator reaches a preset end number, controlling the refrigerator to stop.

[0059] In this embodiment, the number of cycles is set to 3 times, and after the refrigerator motor cycles through the first speed and the second speed three times, it is controlled to shut down so that the air and gas inside are fully mixed.

[0060] In some embodiments, before step S4, that is, after shutting down the refrigerator, the control method further includes:

[0061] timing the duration of the refrigeration machine stopping operation;

[0062] When the duration of the refrigerator stopping operation reaches the preset shutdown duration, the step of switching the charging and exhaust system to the exhaust state is entered.

[0063] In this embodiment, the shutdown time is 10 seconds, so that the charged gas is fully mixed with the air in the refrigerator, thereby improving the replacement effect.

[0064] S4. Switch the charging and exhaust system to the exhaust state to discharge the mixed gas in the refrigerator.

[0065] In some embodiments, the charging and exhaust system includes an inflation valve and an exhaust valve, wherein, in the inflation state, the inflation valve is opened and the exhaust valve is closed, so that the charging and exhaust system fills gas into the refrigerator; when switching to the exhaust state, the exhaust valve is opened and the inflation valve is closed, so that the mixed gas in the refrigerator is discharged to improve the purity of the nitrogen finally filled.

[0066] Among them, in steps S1-S3, the charging and exhaust system is always in the charging state, and the cold end temperature of the refrigerator is always controlled above 15 degrees Celsius during the charging process, and will return to normal temperature during the exhaust.

[0067] In some embodiments, after the inflation and exhaust replacement in the above steps, the inflation and exhaust system cycles through inflation and exhaust operations. The control method further includes, after step S4, controlling the inflation and exhaust system to cycle through inflation and exhaust operations according to preset inflation and exhaust durations.

[0068] In this embodiment, the charging and exhaust system has 10 cycles, with 1 minute of charging and 1 minute of exhausting, so as to fully replace the air inside the refrigerator and improve the purity of the nitrogen finally charged.

[0069] The refrigerator charging and exhaust control method provided by the embodiment of the present disclosure is to put the refrigerator into operation during charging so that the internal gas circulates, drive the compression piston and regenerator of the refrigerator to intermittently reciprocate, repeatedly squeeze the dead volume in the refrigerator, so that the gas entering from the charging port can fully purge the gas on the surface of the internal parts and fully mix with the internal air, thereby improving the replacement effect, and then discharge it after mixing with the gas retained in the dead volume of the refrigerator, fully replacing the air inside the refrigerator, and improving the purity of the final helium filling. By running the refrigerator motor at a variable speed, the gas is first circulated at a low speed, so that the charged gas is fully mixed with the air inside the refrigerator, and then the high-speed operation of the refrigerator allows the air flow to quickly flow over the surface of the workpiece, thereby taking away the gas attached to the surface of the parts, so as to fully replace the air inside the refrigerator and improve the purity of the final nitrogen filling.

[0070] Example 2

[0071] Based on the above embodiment, this embodiment provides a refrigerator charging and exhaust control system, such as Figure 3 As shown, the control system includes a refrigerator 11, an air charging and exhaust system 12 and a control unit 13; the air charging hole of the refrigerator 11 is connected to the air path of the air charging and exhaust system 12; the refrigerator 11 and the air charging and exhaust system 12 are both connected to the control unit 13, and the control unit 13 is used to execute the steps of implementing the method described in the above embodiment.

[0072] Example 3

[0073] Based on the above embodiment, this embodiment provides an application example.

[0074] In this embodiment, the steps of the control method in the above embodiment are described with specific operating parameters. The specific contents are:

[0075] Connect the refrigerator to the charging and exhaust system and the control unit, adjust the charging valve pressure to 5 bar, and start the charging and exhaust program. The charging and exhaust system has 10 cycles, 1 minute for charging and 1 minute for exhausting. When the program starts, the charging valve opens, and high-pressure gas enters the interior of the box. When the charging valve opens, a signal will be sent to the motor control unit. At this time, the control unit starts timing, and starts to control the motor rotation after 5 seconds. The low-speed operation drives the internal parts of the box to run, and the compression end compresses the gas to flow to the cold finger end. The gas then flows out from the top through the regenerator back to the interior of the box, allowing the gas to circulate. At this time, the gas at the cold finger end is fully mixed with high-pressure helium and air under the stirring of the parts and the working condition cycle. Figure 4As shown, during low-speed operation, the motor is controlled at 60 rpm. When the workpiece heat consumption is 250 MW, the cold-end temperature of the regenerator will stabilize at 21°C at room temperature, preventing condensation. After 10 seconds of operation, the refrigerator speed is increased to 500 rpm and maintained for 5 seconds. At high speed, the gas flows rapidly over the workpiece surface, removing the gas attached to the surface of the part. At this point, the cold-end temperature will drop to 18°C. After three cycles, the refrigerator stops. After 10 seconds, the charging and exhaust station closes the charging valve and opens the exhaust valve to exhaust the mixed gas. During the entire charging process, the cold-end temperature will be controlled above 15°C and will return to room temperature during exhaust. Then, the next charging cycle begins.

[0076] Example 4

[0077] Based on the above embodiment, this embodiment provides a control device, such as Figure 5 As shown, it includes a memory 21, a processor 22 and a computer program stored in the memory 21, and the processor 22 executes the computer program to implement the steps of the method described in the above embodiment.

[0078] In some implementations of this embodiment, a computer-readable storage medium is provided, such as Figure 6 As shown, a computer program 31 is stored thereon, and when the computer program 31 is executed by a processor, the steps of the method described in the above embodiment are implemented.

[0079] In some implementations of this embodiment, a computer program product is provided, including a computer program, which implements the steps of the method described in the above embodiment when executed by a processor.

[0080] The processor may include, but is not limited to, one or more processors or microprocessors. Each processor may be an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a controller, a microcontroller, a microprocessor, or other electronic components to execute the methods in the above embodiments.

[0081] The computer-readable storage medium may be implemented by any type of volatile or non-volatile storage device or a combination thereof. The computer-readable storage medium may include, but is not limited to, for example, random access memory (RAM), read-only memory (ROM), flash memory, EPROM memory, EEPROM memory, registers, computer storage media (such as hard disks, floppy disks, solid-state drives, removable disks, CD-ROMs, DVD-ROMs, Blu-ray discs, etc.).

[0082] The computer-readable storage medium may also store at least one computer-executable program / instruction, such as a computer-readable instruction. Computer-readable storage media include, but are not limited to, volatile memory and / or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and / or cache memory. Computer-readable storage media may include, for example, read-only memory (ROM), a hard disk, a flash memory, etc. For example, a non-transitory computer-readable storage medium may be connected to a computing device such as a computer, and then, when the computing device executes the computer-readable instructions stored on the computer-readable storage medium, the various methods described above may be performed.

[0083] In addition, the computer device may also include (but is not limited to) a data bus, an input / output (I / O) bus, a display, and input / output devices (eg, keyboard, mouse, speaker, etc.).

[0084] The processor can communicate with external devices via an I / O bus via a wired or wireless network.

[0085] In one embodiment, the at least one computer executable instruction may also be compiled into or constitute a software product / computer program product, wherein one or more computer executable instructions are executed by a processor to perform the various functions and / or method steps in the embodiments described in the present technology.

[0086] In the embodiments provided in the present disclosure, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a portion of code, and the above-mentioned module, program segment or a portion of code contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or can be implemented using a combination of dedicated hardware and computer instructions.

[0087] It should be noted that, in this disclosure, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element limited by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0088] Although the embodiments disclosed in this disclosure are as described above, the above contents are merely embodiments adopted to facilitate understanding of the disclosure and are not intended to limit the disclosure. Any person skilled in the art of the disclosure may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope of the disclosure. However, the scope of patent protection of the disclosure shall still be based on the scope defined by the attached claims.

Claims

1. A refrigerator charging and exhaust control method, characterized in that: The refrigerator includes a refrigerator body and a motor for driving the refrigerator body; the charging port of the refrigerator is connected to an charging and exhaust system; the control method includes the following steps: Controlling the charging and exhaust system to enter a charging state to charge gas into the charging port of the refrigerator; Controlling the operation of the motor of the refrigerator to allow the gas inside the refrigerator to flow; setting the minimum temperature drop value when the refrigerator is running to be higher than the current ambient dew point; When the operation of the refrigerator reaches a preset end condition, controlling the refrigerator to stop; timing the duration of the refrigeration machine stopping operation; When the duration of the refrigerator stopping operation reaches a preset shutdown duration, the charging and exhaust system is switched to the exhaust state to discharge the mixed gas in the refrigerator; after the charging and exhaust replacement in the above steps, the charging and exhaust system cyclically performs the charging and exhausting operations to make the refrigerator operate intermittently; The controlling of the motor operation of the refrigerator includes: controlling the motor of the refrigerator to perform cyclic operation under a preset operating condition; the preset operating condition is controlling the motor of the refrigerator to perform variable speed operation; specifically including: controlling a motor of the refrigerator to operate at a first speed so that the refrigerator circulates internal gas; When the duration of the motor running at the first speed reaches a preset cycle operation duration, controlling the motor of the refrigerator to run at a second speed so that the gas in the refrigerator flows rapidly, until the duration of the motor running at the second speed continues to reach a preset high-speed operation duration; During the operation of the motor for controlling the refrigerator, the first speed is lower than the second speed.

2. A refrigerator charging and exhaust control method according to claim 1, characterized in that: When the operation of the refrigerator reaches a preset end condition, controlling the refrigerator to stop includes: when the number of cycles of the operation of the refrigerator motor reaches a preset end number, controlling the refrigerator to stop.

3. A refrigerator charging and exhaust control method according to claim 1, characterized in that: The operating time of the first speed is longer than the operating time of the second speed.

4. A refrigerator charging and exhaust control method according to claim 1, characterized in that: Before the step of controlling the operation of the motor of the refrigerator, the control method includes: timing the charging time of the refrigerator; Determine whether the inflation time reaches a preset time. If so, enter the step of controlling the motor operation of the refrigerator.

5. A refrigerator charging and exhaust control method according to claim 1, characterized in that: The inflation and exhaust system performs inflation and exhaust operations in a cycle; The control method further includes: after the step of switching the charging and exhaust system to the exhaust state to discharge the mixed gas in the refrigerator, controlling the charging and exhaust system to perform a cyclic operation according to a preset charging and exhausting time.

6. A refrigerator charging and exhaust control system, characterized in that: It includes a refrigerator, an air charging and exhaust system and a control unit; the air charging hole of the refrigerator is connected to the air circuit of the air charging and exhaust system; the refrigerator and the air charging and exhaust system are both connected to the control unit, and the control unit is used to execute the steps of the control method described in any one of claims 1 to 5.

7. A control device comprising a memory, a processor, and a computer program stored in the memory, characterized in that: The processor executes the computer program to implement the steps of the method according to any one of claims 1 to 5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

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