Ice maker, ice maker control method and device, electronic equipment and storage medium

Abstract

The invention relates to an ice maker, an ice maker control method and device, electronic equipment and a storage medium, and belongs to the technical field of ice makers. The ice maker comprises a compressor, a condenser, an evaporator, a water pan and a throttling device, the compressor, the condenser, the throttling device and the evaporator are sequentially connected, and the water pan is connected with the compressor, the condenser, the evaporator and the throttling device. The ice maker control method comprises the following steps: detecting the water temperature value of a water pan, the temperature of the water pan and the change of the water temperature value of the water pan; the flow direction of a refrigerant is controlled according to the water temperature value of the water pan; the opening and closing degree of an electronic expansion valve is adjusted according to the change of the water temperature value of the water pan, so that the flow of a refrigerant is controlled, and the water temperature value of the water pan is reduced to target water temperature; and the flow direction of a refrigerant is controlled according to the temperature of the water pan. The problem that the ice making efficiency is low due to the fact that the refrigerating power needs to be reduced and icing is uneven in the ice making process is solved.

Description

Technical Field

[0001] The present application relates to the technical field of ice making machines, and in particular to an ice making machine, an ice making machine control method and device, an electronic device, and a storage medium. Background Art

[0002] At present, the water used for making ice in mainstream particle ice machines mainly comes from water purification equipment or drinking purified water, and the water source is usually at room temperature. The ice-making principle of mainstream particle ice machines is: after injecting room temperature water into the water receiving tray, the water in the water receiving tray is pumped into the water distributor through a water pump, and the water distributor then sprays the water evenly onto the ice mold. The water will absorb heat from the ice mold and freeze, and the unfrozen water will flow back to the water receiving tray below along the ice mold. Experiments have found that the water temperature must drop to a certain temperature before it can freeze when it is sprinkled onto the ice mold by the water distributor, otherwise the water flowing through the ice mold will only flow back to the water receiving tray below along the ice mold. When room temperature water is just injected into the water receiving tray, the water will cool down through the ice mold for a long time until the water temperature in the water receiving tray drops to a certain temperature before it starts to freeze. At the same time, experiments have found that the water temperature in the water receiving tray cannot be too low, otherwise it is easy to form ice debris in the water receiving tray and block the pump.

[0003] The existing particle ice machine mainly uses high power cooling before the water temperature in the water tray drops, so as to quickly reduce the water temperature. After the water temperature drops to a certain level, the system reduces the cooling power to adjust the cooling capacity to a level that allows the water to freeze on the ice mold without generating ice debris in the water tray. As the cooling capacity decreases after the water temperature drops, the ice formation speed decreases.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The present application provides an ice maker, an ice maker control method and device, an electronic device, and a storage medium to solve the technical problem that the above-mentioned ice maker performs high-power refrigeration before the water temperature in the water receiving tray drops and reduces the refrigeration power after the water temperature in the water receiving tray drops to a certain level, resulting in a decrease in refrigeration capacity after the water temperature in the water receiving tray drops, thereby reducing the ice making rate.

[0006] According to one aspect of an embodiment of the present application, the present application provides an ice maker, comprising a compressor, a condenser, an evaporator, a water receiving tray and a throttling device; the compressor, the condenser, the throttling device and the evaporator are connected in sequence, and the water receiving tray is respectively connected to the compressor, the condenser, the evaporator and the throttling device; the water receiving tray is provided with a temperature detection component, and the temperature detection component is used to detect the water temperature of the water receiving tray to control the flow direction and flow rate of the refrigerant in the ice maker.

[0007] Optionally, a refrigerant pipeline is provided at the bottom of the water receiving tray, and an electronic expansion valve for adjusting the refrigerant flow is provided at the inlet end of the refrigerant pipeline.

[0008] Optionally, the exhaust end of the compressor is provided with a three-way valve for adjusting the flow direction of the refrigerant, and the three-way valve includes a first inlet end, a second inlet end and a first outlet end, the first inlet end is connected to the exhaust end of the compressor, the second inlet end is connected to the throttling device, and the first outlet end is connected to the electronic expansion valve.

[0009] Optionally, the outlet end of the refrigerant pipeline is provided with a first solenoid valve and a second solenoid valve for controlling the flow direction of the refrigerant, and the outlet end of the refrigerant pipeline includes a first branch and a second branch, one end of the first solenoid valve is connected to the first branch, and the other end is connected to the condenser; one end of the second solenoid valve is connected to the second branch, and the other end is connected to the evaporator.

[0010] Optionally, the two ends of the evaporator, the suction end of the compressor and the throttling device are connected via a four-way valve, and the four-way valve is used to control the flow direction of the refrigerant.

[0011] According to another aspect of an embodiment of the present application, the present application provides an ice maker control method, including: detecting a water temperature value of a water receiving tray, the temperature of the water receiving tray and a change in the water temperature value of the water receiving tray; controlling the flow direction of the refrigerant according to the water temperature value of the water receiving tray; adjusting the opening and closing degree of the electronic expansion valve according to the change in the water temperature value of the water receiving tray to control the flow rate of the refrigerant so that the water temperature value of the water receiving tray is reduced to a target water temperature; and controlling the flow direction of the refrigerant according to the temperature of the water receiving tray.

[0012] Optionally, controlling the flow direction of the refrigerant according to the water temperature value of the water receiving pan includes:

[0013] Determine a first preset temperature and a second preset temperature, the first preset temperature being lower than the second preset temperature;

[0014] When the water temperature of the water receiving pan is lower than the first preset temperature, the electronic expansion valve and the first solenoid valve are opened and the second solenoid valve is closed, and the first inlet end of the three-way valve is connected to allow the high-temperature and high-pressure gaseous refrigerant compressed by the compressor to enter the condenser through the refrigerant pipeline of the water receiving pan;

[0015] When the water temperature value of the water receiving pan is greater than the second preset temperature, the electronic expansion valve and the second solenoid valve are opened and the first solenoid valve is closed, and the second inlet end of the three-way valve is connected to allow the low-temperature and low-pressure gas-liquid mixed refrigerant coming out of the throttling device to enter the evaporator through the refrigerant pipeline of the water receiving pan.

[0016] Optionally, controlling the flow direction of the refrigerant according to the temperature of the water receiving pan includes:

[0017] Determining a third preset temperature and a fourth preset temperature, wherein the third preset temperature is lower than the fourth preset temperature;

[0018] When the temperature of the water receiving pan is lower than the third preset temperature, the refrigerant flow direction is switched by the four-way valve to enter from the lower end of the evaporator pipeline and be discharged from the upper end of the evaporator pipeline;

[0019] When the temperature of the water receiving pan is greater than the fourth preset temperature, the refrigerant flow direction is switched by the four-way valve to enter from the upper end of the evaporator pipeline and be discharged from the lower end of the evaporator pipeline;

[0020] When the device starts to harvest ice, the electronic expansion valve, the first solenoid valve and the second solenoid valve are closed;

[0021] The refrigerant flow direction is switched by a four-way valve so that it enters from the lower end of the evaporator pipeline and is discharged from the upper end of the evaporator pipeline;

[0022] When the harvest time is halfway, the refrigerant flow direction is switched through the four-way valve to enter from the upper end of the evaporator pipeline and be discharged from the lower end of the evaporator pipeline.

[0023] According to another aspect of the embodiment of the present application, the present application provides an ice making machine control device, comprising:

[0024] A temperature detection module is used to detect the water temperature value of the water receiving tray, the temperature of the water receiving tray, and the change of the water temperature value of the water receiving tray;

[0025] A first refrigerant flow direction control module, used to control the flow direction of the refrigerant according to the water temperature value of the water receiving pan;

[0026] A refrigerant flow control module, used to adjust the opening and closing degree of the electronic expansion valve according to the change of the water temperature value of the water receiving pan, so as to control the flow of the refrigerant to reduce the water temperature value of the water receiving pan to the target water temperature;

[0027] The second refrigerant flow direction control module is used to control the flow direction of the refrigerant according to the temperature of the water receiving tray.

[0028] According to another aspect of an embodiment of the present application, the present application provides an electronic device, including a memory, a processor, a communication interface and a communication bus, wherein the memory stores a computer program that can be run on the processor, and the memory and the processor communicate through the communication bus and the communication interface, and is characterized in that the processor implements instructions of the control method of the above-mentioned refrigeration device when executing the computer program.

[0029] According to another aspect of the embodiment of the present application, the present application also provides a readable storage medium storing program instructions, and when the program instructions are read and executed by a computing device, the computing device executes the control method of the refrigeration device.

[0030] The above technical solution provided by the embodiment of the present application has the following advantages compared with the related art:

[0031] The present application realizes precise control of the water temperature value of the water receiving tray by detecting the water temperature value, temperature and water temperature change of the water receiving tray, and accurately controlling the flow direction and flow rate of the refrigerant accordingly. It ensures that the water temperature can quickly drop to a temperature range suitable for freezing, thereby shortening the waiting time before ice making. By adjusting the opening and closing degree of the electronic expansion valve, the flow rate of the refrigerant can be accurately controlled to reduce the water temperature to the target water temperature, which not only ensures the ice making efficiency, but also avoids the formation of ice debris and clogging of the water pump caused by too low water temperature. Different from the traditional practice of reducing power after high-power refrigeration of traditional particle ice machines, the present application can flexibly adjust the refrigeration power according to the actual water temperature through dual regulation of the refrigerant flow direction and flow rate. This not only ensures the rapid drop in water temperature, but also maintains a stable cooling capacity after the water temperature reaches the suitable freezing range, avoiding the decrease in ice formation rate due to insufficient cooling capacity. By precisely controlling the flow direction of the refrigerant, the present application can optimize the working state of the evaporator, making the freezing process of water on the ice mold more uniform and efficient, which helps to improve the quality and consistency of ice cubes, while shortening the ice-making cycle and improving the overall ice-making efficiency. Since the refrigeration power and refrigerant flow can be precisely controlled, the present application reduces energy consumption while achieving efficient ice-making. This helps to reduce energy consumption and operating costs and improve the economy of the equipment. The present application realizes real-time monitoring and precise control of the water temperature value of the docking water pan through the coordinated work of multiple sensors and solenoid valves. The stability and reliability of the system are enhanced, and the risk of failure caused by water temperature fluctuations or insufficient cooling capacity is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0034] Figure 1 A schematic diagram of the structure of an ice-making machine condenser in operation according to an embodiment of the present application;

[0035] Figure 2 It is a structural schematic diagram of an ice-making machine evaporator in operation according to an embodiment of the present application;

[0036] Figure 3 This is a schematic diagram of a first structure of a four-way valve controlling an ice mold pipeline according to an embodiment of the present application;

[0037] Figure 4This is a schematic diagram of a second structure of a four-way valve controlling an ice mold pipeline according to an embodiment of the present application;

[0038] Figure 5 A schematic diagram of the specific structure of an ice maker provided according to an embodiment of the present application;

[0039] Figure 6 It is a partial structural schematic diagram of an ice maker provided according to an embodiment of the present application;

[0040] Figure 7 A schematic diagram of a specific structure of an ice-making machine condenser in operation according to an embodiment of the present application;

[0041] Figure 8 A schematic diagram of a specific structure of an ice-making machine evaporator in operation according to an embodiment of the present application;

[0042] Fig. 9 A schematic diagram of a four-way valve control according to an embodiment of the present application;

[0043] Fig.10 A schematic diagram of a flow chart of an ice maker control method provided according to an embodiment of the present application;

[0044] Fig.11 It is a structural schematic diagram of an ice maker control device provided according to an embodiment of the present application;

[0045] Fig.12 A schematic diagram of the structure of an optional electronic device provided according to an embodiment of the present application.

[0046] Reference numerals:

[0047] 1. Compressor; 2. Condenser; 3. Evaporator; 4. Water tray; 5. Throttling device; 6. Three-way valve; 7. First inlet port; 8. Second inlet port; 9. First outlet port; 10. Electronic expansion valve; 11. First solenoid valve; 12. Second solenoid valve. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0049] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present application and have no specific meaning. Therefore, "module" and "component" can be used interchangeably.

[0050] In the related art, the traditional ice maker uses high power to cool the water before the water temperature in the water tray drops, so that the water temperature drops quickly. After the water temperature drops to a certain level, the cooling power is reduced to control the cooling capacity to a level that allows the water to freeze on the ice mold without generating ice debris in the water tray. This results in a problem that the ice forming speed decreases due to the decrease in cooling capacity after the water temperature drops.

[0051] In order to solve the problems mentioned in the background technology, according to one aspect of the embodiments of the present application, an embodiment of an ice maker is provided.

[0052] Combination Figures 1 to 8 As shown, an ice making machine provided by an embodiment of the present invention comprises a compressor 1, a condenser 2, an evaporator 3, a water receiving tray 4 and a throttling device 5; the compressor 1, the condenser 2, the throttling device 5 and the evaporator 3 are connected in sequence, and the water receiving tray 4 is respectively connected to the compressor 1, the condenser 2, the evaporator 3 and the throttling device 5; the water receiving tray is provided with a temperature detection component, and the temperature detection component is used to detect the water temperature of the water receiving tray to control the flow direction and flow rate of the refrigerant.

[0053] In the above technical solution, the evaporator 3 is provided with an ice mold, and the evaporator 3 and the ice mold receive the refrigerant condensed from the compressor 1 and the condenser 2. The refrigerant in the ice mold is used to refrigerate the water transported by the water tray 4 to obtain ice cubes.

[0054] Optionally, the exhaust end of the compressor 1 is provided with a three-way valve 6 for adjusting the flow direction of the refrigerant. The three-way valve 6 includes a first inlet end 7, a second inlet end 8 and a first outlet end 9. The first inlet end 7 is connected to the exhaust end of the compressor 1, and the second inlet end 2 is connected to the throttling device 5. The setting of the three-way valve 6 allows the refrigerant to flexibly switch the flow direction between the exhaust end of the compressor 1 and the throttling device 5. It helps the system to achieve the best refrigeration effect under different working conditions, while improving the flexibility and reliability of the system. In the early stage of ice making, the first inlet end 7 of the triangular valve 6 can be closed, the second inlet end 8 can be opened, and the low-temperature and low-pressure refrigerant from the throttling device 5 can be introduced through the second inlet end 8 to reduce the water temperature of the water receiving tray to 1-3°C suitable for ice making. When the water temperature is close to the freezing point (below 1°C), the first inlet end 7 of the triangular valve 6 can be opened, the second inlet end 8 can be closed, and the high-temperature and high-pressure refrigerant discharged from the compressor 1 can be introduced through the first inlet end 7 to increase the water temperature of the water receiving tray, so as to avoid the formation of ice debris in the water receiving tray due to the low water temperature, which may block the water pump.

[0055] As an example, the three-way valve 6 is an L-type three-way valve, which allows the refrigerant to flexibly switch the flow direction between the exhaust end of the compressor 1 and the throttling device 5. This allows the refrigeration system to adjust the flow path of the refrigerant under different working conditions, thereby achieving the best refrigeration effect. By accurately controlling the flow direction and flow rate of the refrigerant, the L-type three-way valve helps to improve the performance and efficiency of the entire refrigeration system.

[0056] Optionally, a refrigerant pipeline is provided at the bottom of the water receiving pan 4, and an electronic expansion valve 10 for adjusting the refrigerant flow is provided at the inlet end of the refrigerant pipeline, and the electronic expansion valve 10 is connected to the first outlet end 9 of the three-way valve 6. The refrigerant pipeline is provided at the bottom of the water receiving pan 4, and the refrigerant flow is adjusted by the electronic expansion valve 10, so that the distribution and flow speed of the refrigerant in the system can be accurately controlled. The rapid response capability of the electronic expansion valve 10 helps the system to quickly adapt to different refrigeration needs and improve refrigeration efficiency and energy-saving performance.

[0057] Optionally, the outlet end of the refrigerant pipeline is provided with a first solenoid valve 11 and a second solenoid valve 12 for controlling the flow direction of the refrigerant. The outlet end of the refrigerant pipeline includes a first branch and a second branch. One end of the first solenoid valve 11 is connected to the first branch, and the other end is connected to the condenser 2; one end of the second solenoid valve 12 is connected to the second branch, and the other end is connected to the evaporator 3. The first solenoid valve 11 and the second solenoid valve 12 are used to control the flow of the refrigerant to the condenser 2 and the evaporator 3 respectively, so that the refrigeration effect of the two components can be accurately adjusted. This helps the system to achieve more accurate refrigeration control in different environments and improve the adaptability and stability of the system.

[0058] It can be understood that when the electronic expansion valve 10 is in a fully open state or a closed state, the function of the electronic expansion valve 10 is the same as that of the first solenoid valve 11 and the second solenoid valve 12, which is only to control the flow direction of the refrigerant.

[0059] In the above embodiment, the introduction of the three-way valve 6 enables the refrigerant to flexibly switch the flow direction between the exhaust end of the compressor 1 and the throttling device 5, which helps the system to achieve the best refrigeration effect under different working conditions. In the early stage of ice making, the second inlet end 8 of the three-way valve 6 is opened, the first inlet end 7 is closed, and the low-temperature and low-pressure refrigerant flow from the throttling device 5 is introduced through the second inlet end 8 to quickly reduce the water temperature, so that the refrigeration process can be more finely controlled to avoid energy waste caused by excessive refrigeration. This flexible refrigerant flow control enables the system to minimize energy consumption and improve energy-saving performance while ensuring the refrigeration effect. The flexible switching flow function of the three-way valve 6 not only improves the refrigeration efficiency of the system, but also enhances the flexibility and reliability of the system. Under different working conditions, the system can adapt to different refrigeration requirements by adjusting the flow direction of the three-way valve 6. At the same time, the rapid response capability of the electronic expansion valve 10 enables the system to quickly adjust the refrigerant flow to adapt to changes in parameters such as water temperature and ambient temperature. This rapid response and flexible adjustment capability improves the stability and reliability of the system and reduces system failures caused by changes in working conditions. A refrigerant pipeline is arranged at the bottom of the water receiving pan, and the refrigerant flow rate is adjusted by the electronic expansion valve 10, so that the distribution and flow rate of the refrigerant in the system can be accurately controlled. It helps to avoid local accumulation or excessive flow of refrigerant in the system, thereby improving the refrigeration efficiency and stability of the system. At the same time, the precise adjustment ability of the electronic expansion valve 10 can also adjust the flow rate of the refrigerant according to actual needs to achieve more accurate refrigeration control. Open the first solenoid valve 11 and close the second solenoid valve 12, so that the high-temperature and high-pressure refrigerant passes through the water receiving pan 4 and enters the condenser 2 through the first solenoid valve 11; open the second solenoid valve 12 and close the first solenoid valve 11, so that the low-temperature and low-pressure refrigerant passes through the water receiving pan 4 and enters the evaporator 3 through the second solenoid valve 12. By controlling the opening and closing of the first solenoid valve 11 and the second solenoid valve 12, the refrigerant is controlled to flow to the condenser 2 or the evaporator 3 respectively, and the function of changing the refrigerant flow route is achieved, which can prevent refrigerants in different states from entering unsuitable devices, thereby damaging the system and improving the stability of the system.

[0060] Optionally, the temperature detection component includes a temperature sensor, and the temperature sensor is used to detect the temperature of the water receiving tray and the water temperature value of the water receiving tray. By setting the temperature sensor in the water receiving tray 4, the water temperature in the water receiving tray 4 can be detected in real time, and the opening and closing of each valve can be adjusted by the detected water temperature to adjust the flow direction and flow rate of the refrigerant, so as to achieve temperature control of the water temperature in the water receiving tray 4, so that the water temperature of the water receiving tray 4 is maintained at a temperature that is easy to form ice and does not form ice debris. By controlling the flow direction of the refrigerant in the ice mold pipeline, the problem of reducing the refrigeration power and uneven ice formation during the ice making process is solved, and the ice making efficiency is improved.

[0061] Optionally, both ends of the evaporator 3, the suction end of the compressor 1 and the throttling device 5 are connected via a four-way valve, and the four-way valve is used to control the flow direction of the refrigerant. Fig. 9 The figure shows the principle diagram of the four-way valve. The flow direction of the refrigerant is changed by controlling the structure in the four-way valve. Fig. 9 The channel through which the refrigerant passes when the four-way valve is in the forward direction is different from the channel through which the refrigerant passes when the four-way valve is in the reverse direction. As a key control component for the flow direction of the refrigerant, the four-way valve can flexibly switch the flow direction of the refrigerant between the evaporator 3, the suction end of the compressor 1 and the throttling device 5. The system can operate efficiently in different refrigeration modes, improving the versatility and flexibility of the system. During the ice-making process, the refrigerant flow direction can be adjusted by the four-way valve according to parameters such as water temperature to achieve the best refrigeration effect. At the same time, the four-way valve has a fast switching speed and sensitive response, and can quickly adapt to various working conditions, improving the adaptability and flexibility of the system. The four-way valve can ensure the efficient circulation of the refrigerant between the evaporator 3, the suction end of the compressor 1 and the throttling device 5 by accurately controlling the flow direction of the refrigerant. During the ice-making process, the refrigerant absorbs heat when passing through the evaporator 3 to produce a refrigeration effect; increases the pressure when passing through the compressor 1 to provide power for the refrigeration cycle; and reduces the pressure when passing through the throttling device 5, so that the refrigerant can enter the evaporator again for refrigeration. The precise control of the four-way valve enables this process to be carried out efficiently and orderly, thereby improving the refrigeration efficiency. In the ice machine system, the introduction of the four-way valve makes the control of the refrigerant flow more accurate and reliable. Even under harsh working conditions, the four-way valve can maintain stable performance and ensure the normal operation of the system.

[0062] According to another aspect of the embodiment of the present application, Fig.10 As shown, the present application provides an ice making machine control method, comprising:

[0063] Step S101, detecting the water temperature value of the water receiving tray, the temperature of the water receiving tray and the change of the water temperature value of the water receiving tray;

[0064] Step S103, controlling the flow direction of the refrigerant according to the water temperature value of the water receiving pan;

[0065] Specifically, the flow direction of the refrigerant is controlled according to the water temperature value of the water receiving pan, including:

[0066] Determine a first preset temperature and a second preset temperature, the first preset temperature being lower than the second preset temperature;

[0067] When the water temperature of the water receiving pan is lower than the first preset temperature, the electronic expansion valve 10 and the first solenoid valve 11 are opened and the second solenoid valve 12 is closed, and the first inlet port 7 of the three-way valve 6 is connected so that the high-temperature and high-pressure gaseous refrigerant compressed by the compressor 1 enters the condenser 2 through the refrigerant pipeline of the water receiving pan 4;

[0068] When the water temperature in the water receiving pan is greater than the second preset temperature, the electronic expansion valve 10 and the second solenoid valve 12 are opened and the first solenoid valve 11 is closed, and the second inlet end 8 of the three-way valve 6 is connected to allow the low-temperature and low-pressure gas-liquid mixed refrigerant coming out of the throttling device 5 to enter the evaporator 3 through the refrigerant pipeline of the water receiving pan 4.

[0069] In the above embodiment, the water temperature value of the water receiving pan, the temperature of the water receiving pan and its changes are monitored in real time by the temperature sensor, so as to accurately grasp the state of the refrigeration system. According to the different water temperature values ​​of the water receiving pan, the system can automatically adjust the flow direction of the refrigerant to ensure that energy is saved to the maximum extent while maintaining efficient refrigeration. When the water temperature value of the water receiving pan is low, the system chooses to allow the high-temperature and high-pressure gaseous refrigerant to directly enter the condenser 2 through the refrigerant pipeline of the water receiving pan 4, and accelerates the condensation process and improves the refrigeration efficiency by utilizing the high temperature and high pressure characteristics of the refrigerant. When the water temperature value of the water receiving pan is high, the system chooses to allow the low-temperature and low-pressure gas-liquid mixed refrigerant to flow through the water receiving pan 4, and effectively reduces the water temperature of the water receiving pan through the heat exchange between the refrigerant and the water receiving pan 4, so that the condenser 2 can effectively dissipate heat and improve the refrigeration effect. The method of flexibly adjusting the flow direction of the refrigerant according to the change of water temperature not only improves the refrigeration efficiency of the system, but also significantly reduces energy consumption. By accurately controlling the flow direction of the refrigerant, the system instability or failure caused by excessively high or low water temperature is effectively avoided. When the water temperature in the water tray exceeds the preset range, the system can respond quickly and adjust the refrigerant flow direction to ensure that the water temperature remains within the appropriate range. This real-time control mechanism not only helps to maintain the stable operation of the system, but also extends the service life of the equipment and reduces maintenance costs. In addition, because the system can dynamically adjust according to different water temperatures, its adaptability and reliability have also been significantly improved.

[0070] Combination Figure 1 and Figure 7As shown, when the device starts to make ice, the compressor 1 is first started to start working and compress the refrigerant. At the same time, the water temperature in the water tray 4 is detected in real time by the temperature sensor for detecting water temperature on the water tray 4 to obtain the current water temperature value. If the water temperature in the water tray 4 is lower than the first preset temperature x1, the first preset temperature obtained according to the experimental results is optimally x1 = 1°C. When the water temperature in the water tray 4 is lower than the first preset temperature, it means that the water temperature is low enough and suitable for ice making operation. At this time, the following operations are performed: open the electronic expansion valve 10 on the refrigerant pipeline of the water tray 4 to allow the refrigerant to flow through the pipeline. Open the first solenoid valve 11 so that the refrigerant can pass through the water tray 4 and then enter the condenser 2. Close the second solenoid valve 12 to ensure that the refrigerant does not directly enter the condenser 2 through other paths. The first inlet end 7 of the L-type three-way valve 6 is turned on so that the high-temperature and high-pressure gaseous refrigerant compressed by the compressor 1 can pass through the refrigerant pipeline of the water tray 4 and then enter the condenser 2 for condensation. Specifically, after the high-temperature and high-pressure gaseous refrigerant is discharged from the compressor 1, it first passes through the refrigerant pipeline of the water receiving pan 4. In the water receiving pan 4, the refrigerant will exchange heat with the water receiving pan 4 with lower water temperature, thereby reducing its own temperature. The refrigerant after heat exchange enters the condenser 2 for further condensation and eventually becomes a liquid refrigerant. After the liquid refrigerant passes through the throttling device 5, the pressure is reduced and the temperature is further reduced, becoming a low-temperature and low-pressure liquid refrigerant. After the low-temperature and low-pressure liquid refrigerant enters the evaporator 3, it absorbs the heat of the water in the evaporator 3 and evaporates, thereby achieving a refrigeration effect. The above process will continue to cycle until the desired ice-making effect is achieved. During the entire ice-making process, the water temperature in the water receiving pan 4 is continuously monitored, and the control state of the valve components is adjusted in time according to the changes in the water temperature to ensure the efficiency and effect of ice making.

[0071] In the above embodiment, when the water temperature in the water receiving pan 4 reaches or exceeds 3°C, the system responds immediately by opening the electronic expansion valve 10 and the second solenoid valve 12 to quickly guide the low-temperature and low-pressure gas-liquid mixed refrigerant to flow through the water receiving pan 4. The rapid drop in the water temperature of the water receiving pan is ensured, and the problem of reduced ice-making efficiency or poor cooling effect caused by excessively high water temperature is effectively avoided. At the same time, the direct heat exchange between the refrigerant and the water receiving pan 4 enables heat to be transferred quickly, further improving the cooling efficiency. By continuously monitoring the water temperature in the water receiving pan 4 and adjusting the valve state in time according to the changes, the system achieves precise control of the water temperature. It not only helps to keep the water temperature within a suitable range and improve the ice-making or cooling effect, but also effectively reduces energy waste. In the process of the refrigerant flowing through the water receiving pan 4 for heat exchange, the system can adjust the flow and temperature of the refrigerant according to the actual water temperature, ensuring that while achieving the cooling effect, energy consumption is reduced as much as possible and energy efficiency is improved. On the basis of the original refrigeration system, by adding valves such as the electronic expansion valve 10, the second solenoid valve 12 and the L-type three-way valve 6, the flexible control of the refrigerant flow path is realized, the adaptability and response speed of the system are improved, and it is helpful to adjust the valve state when the system fails or abnormal conditions occur, so as to ensure the continuous and stable operation of the system. At the same time, since the system can be dynamically adjusted according to different water temperatures, its stability and reliability are significantly improved. Accurately controlling the water temperature not only helps to improve the ice making or cooling effect, but also effectively prolongs the service life of the equipment. While avoiding equipment damage and failure caused by too high or too low water temperature, the system can also reduce the wear and fatigue of the equipment by optimizing the refrigerant flow path and flow rate. It not only helps to reduce the downtime and maintenance costs caused by equipment failure, but also improves the overall performance and reliability of the equipment. By optimizing the water temperature control and the refrigerant flow path, not only the performance and efficiency of the system are improved, but also the user can obtain the desired ice making or cooling effect faster. At the same time, since the system can continue to operate stably and maintain a good cooling effect, it also improves user satisfaction.

[0072] Furthermore, combined with Figure 2 and Figure 8As shown, when the water temperature in the water receiving pan 4 is higher than the second preset temperature x2, the second preset temperature is set to x2 = 3°C. When the water temperature in the water receiving pan 4 rises to the second preset temperature x2, cooling measures need to be taken, and the following operations are performed: Open the electronic expansion valve 10 on the refrigerant pipeline of the water receiving pan 4 to allow the refrigerant to flow through the refrigerant pipeline of the water receiving pan 4. Open the second solenoid valve 12 to allow the low-temperature and low-pressure gas-liquid mixed refrigerant coming out of the throttling device 5 to pass through the water receiving pan 4 and then enter the evaporator 3. Close the first solenoid valve 11 to ensure that the refrigerant does not directly enter the evaporator 3 through other paths. Conduct the second inlet end 8 of the L-type three-way valve 6 to allow the refrigerant to flow along the new path. Specifically, the low-temperature and low-pressure gas-liquid mixed refrigerant coming out of the throttling device 5 will first pass through the refrigerant pipeline of the water receiving pan 4. In the water receiving pan 4, the refrigerant will exchange heat with the water receiving pan 4 with a higher water temperature, thereby absorbing heat and partially evaporating. After heat exchange, the refrigerant (which may still be a gas-liquid mixture or closer to a gas state) enters the evaporator 3 for further evaporation and refrigeration. In the evaporator 3, the refrigerant continues to evaporate and absorb heat, thereby achieving a refrigeration effect. The evaporated refrigerant will be sucked in and compressed again by the compressor 1 to form a cycle. The above process will continue to cycle until the desired ice making or cooling effect is achieved. During the whole process, the water temperature in the water receiving tray 4 is continuously monitored, and the control state of the valve components is adjusted in time according to the change of water temperature. Water flows from the upper end of the ice mold to the lower end. If the water temperature is very low, and the system refrigerant flows from the upper end of the evaporator pipeline and is discharged from the lower end, the ice will be thicker in the upper half and the ice will be uneven. If the water temperature is high, and the system refrigerant flows from the lower end of the evaporator pipeline and is discharged from the upper end, the ice will be thicker in the lower half of the ice mold and the ice will be uneven.

[0073] In the above embodiment, when the water temperature in the water receiving tray 4 rises to the second preset temperature x2 (3°C), the system responds quickly by opening the electronic expansion valve 10 and the second solenoid valve 12, allowing the low-temperature and low-pressure gas-liquid mixed refrigerant coming out of the throttling device 5 to flow through the refrigerant pipeline of the water receiving tray 4. The low-temperature and low-pressure characteristics of the refrigerant after throttling, as well as its ability to exchange heat with high-temperature water in the water receiving tray 4, are fully utilized to achieve efficient cooling of the water temperature. Compared with the traditional method, not only is the cooling speed faster, but also by accurately controlling the refrigerant flow and path, it effectively avoids energy waste and improves the overall energy efficiency of the system. By continuously monitoring the water temperature in the water receiving tray 4 and adjusting the control state of the valve in time according to the change of water temperature, the system can achieve precise control of the water temperature. It not only helps to avoid the decrease in ice making efficiency or poor cooling effect caused by too high water temperature, but also effectively prevents the formation of ice slag or equipment damage caused by too low water temperature. At the same time, since the system can be dynamically adjusted according to the real-time water temperature, its stability and reliability are significantly improved. When the water temperature rises to the second preset temperature, cooling measures can be taken in time to ensure that the water temperature is always kept within an appropriate range. It not only helps to improve the ice making speed and quality, but also achieves a more uniform temperature distribution during the cooling process and improves the cooling efficiency. Since the system can dynamically adjust the refrigerant flow and path as needed, it can also maintain the best operating state under different working conditions. Through the three-way valve 6 and the second solenoid valve 12, flexible control of the refrigerant flow path is achieved. It not only helps to cope with changes in demand under different working conditions, but also provides a backup path when the system fails or abnormal conditions occur, ensuring the continuous and stable operation of the system. At the same time, since the system can be dynamically adjusted according to different water temperatures, its adaptability has also been significantly improved. By accurately controlling the water temperature of the water tray, it helps to reduce equipment damage and failures caused by too high or too low water temperature. Not only does it extend the service life of the equipment, but it also reduces downtime and maintenance costs caused by equipment failure. In addition, since the system can dynamically adjust the refrigerant flow and path as needed, it can also reduce the risk of equipment damage caused by excessive wear or fatigue.

[0074] Step S105, adjusting the opening and closing degree of the electronic expansion valve 10 according to the change of the water temperature value of the water receiving pan, so as to control the flow rate of the refrigerant to reduce the water temperature value of the water receiving pan to the target water temperature;

[0075] In this embodiment, the electronic expansion valve 10 performs PID adjustment according to the water temperature change of the water receiving tray 4 during ice making so that the water temperature reaches the target water temperature. Specifically, the temperature sensor detects the water temperature value of the water receiving tray in real time and feeds the water temperature value of the water receiving tray back to the control system. The control system compares the water temperature value of the water receiving tray with the preset target water temperature. If the water temperature value of the water receiving tray is lower than the target water temperature, the control system instructs the electronic expansion valve 10 to reduce the opening, thereby reducing the refrigerant flow through the refrigerant pipeline of the water receiving tray 4. In this way, the cooling effect in the water receiving tray 4 can be reduced, so that the water temperature gradually rises and tends to the target water temperature. If the water temperature value of the water receiving tray is higher than the target water temperature, the control system will instruct the electronic expansion valve 10 to increase the opening, thereby increasing the refrigerant flow through the refrigerant pipeline of the water receiving tray 4. In this way, the cooling effect in the water receiving tray can be enhanced, so that the water temperature value of the water receiving tray gradually decreases and also tends to the target water temperature. The PID adjustment algorithm dynamically adjusts the opening of the electronic expansion valve according to the deviation between the water temperature value of the water receiving tray and the target water temperature, as well as the rate of change of this deviation over time and the accumulation of the deviation. It can ensure that the water temperature of the water tray can quickly and smoothly reach and maintain near the target water temperature, thereby achieving precise temperature control effect.

[0076] In the above embodiment, the PID adjustment algorithm can dynamically adjust the opening of the electronic expansion valve 4 according to the deviation between the water temperature value of the water receiving tray and the target water temperature, as well as the rate of change and cumulative amount of the deviation. It is more sophisticated than the traditional fixed opening or simple switch control, and can ensure that the water temperature quickly and smoothly reaches and maintains near the target water temperature, thereby improving the temperature control accuracy. Through PID adjustment, the system can respond promptly to changes in the water temperature value of the water receiving tray, and effectively avoid system instability caused by excessive water temperature fluctuations. It helps to extend the service life of the equipment and improve the reliability and stability of the overall system. The PID adjustment algorithm can dynamically adjust the refrigerant flow rate according to actual needs, avoiding unnecessary energy waste. When the water temperature value of the water receiving tray is close to the target value, the opening of the electronic expansion valve 4 will be reduced accordingly, thereby reducing the consumption of refrigerant. This on-demand adjustment method helps to reduce energy consumption and improve energy utilization efficiency. The PID adjustment algorithm can ensure that the water temperature is always kept within the optimal range, thereby speeding up the ice making speed and improving the ice making efficiency.

[0077] Step S107, controlling the flow direction of the refrigerant according to the temperature of the water receiving pan;

[0078] Optionally, the flow direction of the refrigerant is controlled according to the temperature of the water receiving pan, including:

[0079] Determining a third preset temperature and a fourth preset temperature, the third preset temperature being lower than the fourth preset temperature;

[0080] When the temperature of the water tray is lower than the third preset temperature, the refrigerant flow direction is switched by the four-way valve to enter from the lower end of the evaporator pipeline and be discharged from the upper end of the evaporator pipeline;

[0081] When the temperature of the water tray is greater than the fourth preset temperature, the refrigerant flow direction is switched through the four-way valve to enter from the upper end of the evaporator pipeline and be discharged from the lower end of the evaporator pipeline;

[0082] When the device starts to harvest ice, the electronic expansion valve 10, the first solenoid valve 11 and the second solenoid valve 12 are closed;

[0083] The refrigerant flow direction is switched by a four-way valve so that it enters from the lower end of the evaporator pipeline and is discharged from the upper end of the evaporator pipeline;

[0084] When the harvest time is halfway, the refrigerant flow direction is switched through the four-way valve to enter from the upper end of the evaporator pipeline and be discharged from the lower end of the evaporator pipeline.

[0085] Specifically, the third preset temperature y1 and the fourth preset temperature y2 of the water tray temperature are set, as well as the ice collection time during the ice making process, and the third preset temperature y1 is less than the fourth preset temperature y2, wherein the value of the third preset temperature y1 is 4°C, and the value of the fourth preset temperature y2 is set to 9°C. Ensure that the electronic expansion valve 10, the first solenoid valve 11, the first solenoid valve 11 and the four-way valve are in the initial state and ready to receive the control signal. Monitor the water tray temperature in real time. Reference Figure 3 As shown, when the temperature of the water tray is lower than the third preset temperature y1, the four-way valve switches to the first state, allowing the refrigerant to flow from the lower end of the evaporator pipeline and exit from the upper end. At this time, the refrigerant flows from bottom to top in the evaporator 3, which is conducive to quickly reducing the temperature of the water tray 4. Figure 4 As shown, when the temperature of the water tray is higher than the fourth preset temperature y2, the four-way valve switches to the second state, so that the refrigerant flows from the upper end of the evaporator pipeline and is discharged from the lower end. At this time, the refrigerant flows from top to bottom in the evaporator 3, which helps to take away the heat in the water tray 4 and reduce the water temperature. When the device starts to harvest ice, the electronic expansion valve 10, the first solenoid valve 11 and the second solenoid valve 12 are immediately closed to cut off the further supply of refrigerant. At the same time, the four-way valve switches to the first state (entering from the lower end of the evaporator pipeline and discharging from the upper end), and maintains this flow direction until half of the ice harvesting time. At this stage, the flow of refrigerant in the evaporator 3 helps to form a uniform ice layer. After the ice harvesting time reaches half, the four-way valve switches to the second state again (entering from the upper end of the evaporator pipeline and discharging from the lower end) to change the flow direction of the refrigerant. The flow direction adjustment at this stage helps to accelerate the formation and separation of the ice layer and improve the ice harvesting efficiency.

[0086] It is understandable that the ice collection time in this embodiment refers to the time required from the ice maker starting to collect ice cubes to the completion of the ice collection process. When collecting ice, the four-way valve will switch, and the refrigerant in the evaporator 3 is hot at this time, and the evaporator 3 plays the role of the condenser 2.

[0087] By regulating the temperature of the water tray and the flow direction of the refrigerant, the efficiency and flexibility of the ice maker are significantly improved. Specifically, the third preset temperature y1 and the fourth preset temperature y2, as well as half of the ice collection time during the ice making process, are set as the basis for switching the refrigerant flow direction. Not only does it ensure the precise control of the temperature of the water tray, but it also dynamically adjusts the refrigerant flow direction according to real-time temperature feedback, thereby achieving efficient heat transfer and utilization. In the early stage of ice making, the refrigerant enters from the lower end of the evaporator 3 and is discharged from the upper end, which accelerates the reduction of the temperature of the water tray and creates favorable conditions for the rapid formation of the ice layer. As the ice making process progresses, when the temperature of the water tray rises to a temperature higher than the fourth preset temperature y2, the switching of the refrigerant flow direction helps to take away the accumulated heat in time and maintain the stability of the ice making environment. In the ice collection stage, by accurately controlling the switching timing of the four-way valve, not only is the uniform formation of the ice layer ensured, but also the separation and shedding of the ice layer are accelerated by changing the refrigerant flow direction, thereby greatly improving the ice collection efficiency.

[0088] According to another aspect of the embodiment of the present application, see Fig.11 As shown, the present application provides an ice making machine control device, comprising:

[0089] The temperature detection module 202 is used to detect the water temperature value of the water receiving tray, the temperature of the water receiving tray and the change of the water temperature value of the water receiving tray;

[0090] A first refrigerant flow direction control module 204, used to control the flow direction of the refrigerant according to the water temperature value of the water receiving tray;

[0091] The refrigerant flow control module 206 is used to adjust the opening and closing degree of the electronic expansion valve according to the change of the water temperature value of the water receiving pan, so as to control the flow of the refrigerant to reduce the water temperature value of the water receiving pan to the target water temperature;

[0092] The second refrigerant flow direction control module 208 is used to control the flow direction of the refrigerant according to the temperature of the water receiving tray.

[0093] It should be noted that the temperature detection module 202 in this embodiment can be used to execute step S101 in the embodiment of the present application, the first refrigerant flow direction control module 204 in this embodiment can be used to execute step S103 in the embodiment of the present application, the refrigerant flow control module 206 in this embodiment can be used to execute step S105 in the embodiment of the present application, and the second refrigerant flow direction control module 208 in this embodiment can be used to execute step S107 in the embodiment of the present application.

[0094] According to another aspect of the embodiments of the present application, the present application provides an electronic device, such as Fig.12As shown, it includes a memory 301, a processor 303, a communication interface 305 and a communication bus 307. The memory 301 stores a computer program that can be run on the processor 303. The memory 301 and the processor 303 communicate through the communication interface 305 and the communication bus 307. When the processor 303 executes the computer program, the steps of the above method are implemented.

[0095] The memory and processor in the above electronic device communicate through the communication bus and the communication interface. The communication bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The communication bus can be divided into an address bus, a data bus, a control bus, etc.

[0096] The memory may include a random access memory (RAM) or a non-volatile memory, such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

[0097] The above-mentioned processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0098] According to another aspect of the embodiments of the present application, a computer program product or a computer program is provided, the computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the steps of any of the above embodiments.

[0099] Optionally, in an embodiment of the present application, the computer-readable medium is configured to store program codes for the processor to execute the following steps:

[0100] Step S101, detecting the water temperature value of the water receiving tray, the temperature of the water receiving tray and the change of the water temperature value of the water receiving tray;

[0101] Step S103, controlling the flow direction of the refrigerant according to the water temperature value of the water receiving pan;

[0102] Step S105, adjusting the opening and closing degree of the electronic expansion valve according to the change of the water temperature value of the water receiving pan, so as to control the flow rate of the refrigerant to reduce the water temperature value of the water receiving pan to the target water temperature;

[0103] Step S107, controlling the flow direction of the refrigerant according to the temperature of the water receiving pan.

[0104] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0105] When the embodiments of the present application are specifically implemented, reference may be made to the above-mentioned embodiments, which have corresponding technical effects.

[0106] It is understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit may be implemented in one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions of the present application, or a combination thereof.

[0107] For software implementation, the technology of this article can be implemented by a unit that performs the functions of this article. The software code can be stored in a memory and executed by a processor. The memory can be implemented in the processor or outside the processor.

[0108] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0109] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0110] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0111] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0112] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0113] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk or an optical disk. It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the term "include", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such a process, method, article or device. Without more constraints, an element defined by the phrase "comprising a ..." does not exclude the existence of other identical elements in the process, method, article or apparatus comprising the element.

[0114] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. An ice making machine, characterized in that: It includes a compressor, a condenser, an evaporator, a water receiving tray and a throttling device; the compressor, the condenser, the throttling device and the evaporator are connected in sequence, and the water receiving tray is respectively connected to the compressor, the condenser, the evaporator and the throttling device; the water receiving tray is provided with a temperature detection component, and the temperature detection component is used to detect the water temperature of the water receiving tray to control the flow direction and flow rate of the refrigerant in the ice maker.

2. The ice making machine according to claim 1, characterized in that: A refrigerant pipeline is arranged at the bottom of the water receiving pan, and an electronic expansion valve for adjusting the refrigerant flow is arranged at the inlet end of the refrigerant pipeline.

3. The ice making machine according to claim 2, characterized in that: The exhaust end of the compressor is provided with a three-way valve for adjusting the flow direction of the refrigerant. The three-way valve includes a first inlet end, a second inlet end and a first outlet end. The first inlet end is connected to the exhaust end of the compressor, the second inlet end is connected to the throttling device, and the first outlet end is connected to the electronic expansion valve.

4. The ice making machine according to claim 2, characterized in that: The outlet end of the refrigerant pipeline is provided with a first solenoid valve and a second solenoid valve for controlling the flow direction of the refrigerant. The outlet end of the refrigerant pipeline includes a first branch and a second branch. One end of the first solenoid valve is connected to the first branch, and the other end is connected to the condenser; one end of the second solenoid valve is connected to the second branch, and the other end is connected to the evaporator.

5. The ice making machine according to claim 1, characterized in that: The two ends of the evaporator, the suction end of the compressor and the throttling device are connected through a four-way valve, and the four-way valve is used to control the flow direction of the refrigerant.

6. An ice-making machine control method, applicable to the ice-making machine according to any one of claims 1 to 5, characterized in that: include: Detect the water temperature value of the water tray, the temperature of the water tray and the change of the water temperature value of the water tray; Controlling the flow direction of the refrigerant according to the water temperature value of the water receiving pan; According to the change of the water temperature value of the water receiving pan, the opening and closing degree of the electronic expansion valve is adjusted to control the flow rate of the refrigerant so that the water temperature value of the water receiving pan is reduced to the target water temperature; The flow direction of the refrigerant is controlled according to the temperature of the water receiving pan.

7. The ice making machine control method according to claim 6, characterized in that: The controlling the flow direction of the refrigerant according to the water temperature value of the water receiving pan includes: Determine a first preset temperature and a second preset temperature, the first preset temperature being lower than the second preset temperature; When the water temperature of the water receiving pan is lower than the first preset temperature, the electronic expansion valve and the first solenoid valve are opened and the second solenoid valve is closed, and the first inlet end of the three-way valve is connected to allow the high-temperature and high-pressure gaseous refrigerant compressed by the compressor to enter the condenser through the refrigerant pipeline of the water receiving pan; When the water temperature value of the water receiving pan is greater than the second preset temperature, the electronic expansion valve and the second solenoid valve are opened and the first solenoid valve is closed, and the second inlet end of the three-way valve is connected to allow the low-temperature and low-pressure gas-liquid mixed refrigerant coming out of the throttling device to enter the evaporator through the refrigerant pipeline of the water receiving pan.

8. The ice making machine control method according to claim 6, characterized in that: The controlling the flow direction of the refrigerant according to the temperature of the water receiving pan includes: Determining a third preset temperature and a fourth preset temperature, wherein the third preset temperature is lower than the fourth preset temperature; When the temperature of the water receiving pan is lower than the third preset temperature, the refrigerant flow direction is switched by the four-way valve to enter from the lower end of the evaporator pipeline and be discharged from the upper end of the evaporator pipeline; When the temperature of the water receiving pan is greater than the fourth preset temperature, the refrigerant flow direction is switched by the four-way valve to enter from the upper end of the evaporator pipeline and be discharged from the lower end of the evaporator pipeline; When the device starts to harvest ice, the electronic expansion valve, the first solenoid valve and the second solenoid valve are closed; The refrigerant flow direction is switched by a four-way valve so that it enters from the lower end of the evaporator pipeline and is discharged from the upper end of the evaporator pipeline; When the harvest time is halfway, the refrigerant flow direction is switched through the four-way valve to enter from the upper end of the evaporator pipeline and be discharged from the lower end of the evaporator pipeline.

9. An ice making machine control device, characterized in that: include: A temperature detection module is used to detect the water temperature value of the water receiving tray, the temperature of the water receiving tray, and the change of the water temperature value of the water receiving tray; A first refrigerant flow direction control module, used to control the flow direction of the refrigerant according to the water temperature value of the water receiving pan; A refrigerant flow control module, used to adjust the opening and closing degree of the electronic expansion valve according to the change of the water temperature value of the water receiving pan, so as to control the flow of the refrigerant to reduce the water temperature value of the water receiving pan to the target water temperature; The second refrigerant flow direction control module is used to control the flow direction of the refrigerant according to the temperature of the water receiving tray.

10. An electronic device comprising a memory, a processor, a communication interface and a communication bus, wherein the memory stores a computer program that can be run on the processor, and the memory and the processor communicate through the communication bus and the communication interface, characterized in that: When the processor executes the computer program, the instructions of the ice-making machine control method described in any one of claims 6 to 8 are implemented.

11. A readable storage medium storing program instructions, when the program instructions are read and executed by a computing device, the computing device executes the ice-making machine control method according to any one of claims 6 to 8.

Images