Refrigeration appliance and ice making control method thereof

Abstract

The present application relates to the field of refrigeration technology, and particularly provides a refrigeration device and an ice making control method thereof, aiming at solving the problem that the existing ice making evaporator is prone to causing compressor liquid knock when being defrosted. To this end, the refrigeration device comprises a compressor, a condenser, a first throttling mechanism and a refrigeration evaporator constituting a heat exchange cycle, and further comprises an ice making evaporator, a gas-liquid separation device and a defrosting pipeline. By arranging the gas-liquid separation device between the ice making evaporator and the refrigeration evaporator, the gas-liquid two-phase mixed refrigerant mixture generated by the ice making evaporator during the defrosting process can be effectively separated, the high-temperature gas-phase medium is prevented from entering the refrigeration evaporator to cause temperature rise, and at the same time, the redundant gaseous refrigerant is prevented from being secondarily condensed to produce liquid, the risk of compressor liquid knock is effectively avoided, the system operation stability is improved, and the reliability of the refrigeration device is ensured.

Description

Technical Field

[0001] This invention relates to the field of refrigeration technology, specifically providing a refrigeration device and its ice-making control method. Background Technology

[0002] As people's living standards improve, ice-making functions are being applied to more and more household refrigeration equipment. To enable ice-making functionality, existing refrigeration equipment will have an ice-making evaporator connected in series between the condenser and the refrigeration evaporator. The refrigerant discharged from the condenser passes through a throttling mechanism and then sequentially through the ice-making evaporator and the refrigeration evaporator, thus achieving the purpose of ice making and cooling the freezer and refrigerator compartments.

[0003] After ice is made in refrigeration equipment, a de-icing process is required. Specifically, high-temperature refrigerant is introduced into the ice-making evaporator to detach the ice. After flowing through the ice-making evaporator, the high-temperature refrigerant continues to flow into the refrigeration evaporator. However, in existing technology, the gaseous and liquid refrigerant flowing out of the ice-making evaporator directly enters the refrigeration evaporator. Due to the low ambient temperature of the refrigeration evaporator, the gaseous refrigerant in this mixture condenses and regenerates into liquid refrigerant. A large amount of liquid refrigerant can easily flow back to the compressor through the return gas line, causing liquid slugging in the compressor and seriously affecting the reliability of the refrigeration equipment. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned technical problem, namely, to solve the problem that liquid slugging in the compressor is easily caused when the existing ice-making evaporator de-ices.

[0005] In a first aspect, the present invention provides a refrigeration device comprising a compressor, a condenser, a first throttling mechanism, and a refrigeration evaporator constituting a heat exchange cycle. The refrigeration device further comprises an ice-making evaporator, a gas-liquid separation device, and an ice-removing pipeline. The ice-making inlet of the ice-making evaporator is connected to the condenser through a second throttling mechanism connected in parallel with the first throttling mechanism. The ice-making outlet of the ice-making evaporator is connected to the refrigeration evaporator through the gas-liquid separation device. The first end of the ice-removing pipeline is connected to the ice-making inlet, and the second end of the ice-removing pipeline is connected to a heat source, wherein the heat source can heat the ice-making evaporator through the ice-removing pipeline to remove ice from the ice-making evaporator.

[0006] By installing a gas-liquid separator between the ice-making evaporator and the refrigeration evaporator, the gas-liquid two-phase refrigerant mixture generated during the ice-making evaporator's de-icing process can be effectively separated. The liquid refrigerant continues to flow into the refrigeration evaporator for refrigeration, while the gaseous refrigerant can flow directly back to the compressor. This prevents high-temperature gaseous media from entering the refrigeration evaporator and causing a temperature rise, while also preventing excess gaseous refrigerant from condensing into liquid again, effectively avoiding the risk of liquid slugging in the compressor and improving system operational stability. Alternatively, the gaseous refrigerant can be collected by the gas-liquid separator and condensed into liquid refrigerant by the low-temperature refrigerant during the next ice-making process in the ice-making evaporator, continuing to participate in the heat exchange cycle.

[0007] In a preferred embodiment of the above-mentioned refrigeration equipment, the refrigeration equipment further includes a one-in-two-out valve, the valve inlet of which is connected to the condenser outlet of the condenser, the first outlet of which is connected to the ice-making evaporator through the second throttling mechanism, the second outlet of which is connected to the refrigeration evaporator through the first throttling mechanism, the second end of the de-icing pipeline is connected to the compressor outlet, and the compressor constitutes the heat source.

[0008] The high-temperature refrigerant discharged from the compressor is directly sent into the ice-making evaporator for de-icing, ensuring the efficiency and reliability of de-icing.

[0009] In a preferred embodiment of the above-mentioned refrigeration equipment, the refrigeration equipment further includes a one-inlet-three-outlet valve, the valve inlet of the one-inlet-three-outlet valve being connected to the condenser outlet of the condenser, the first outlet of the one-inlet-three-outlet valve being connected to the ice-making evaporator through the second throttling mechanism, the third outlet of the one-inlet-three-outlet valve being connected to the refrigeration evaporator through the first throttling mechanism, the second end of the de-icing pipeline being connected to the second outlet of the one-inlet-three-outlet valve, and the condenser constituting the heat source.

[0010] The refrigerant after heat exchange in the condenser provides heat to the ice-making evaporator. The temperature of the refrigerant discharged from the condenser is relatively mild compared to the exhaust temperature of the compressor, which can avoid the evaporator from being subjected to high temperature shock, protect the evaporator, and ensure the reliability of ice removal.

[0011] In a preferred embodiment of the above-mentioned refrigeration equipment, the refrigeration equipment further includes a main body, in which a freezing compartment and a refrigeration compartment are formed. An ice-making module is provided in the refrigeration compartment, and an ice-making evaporator is disposed in the ice-making module. The refrigeration evaporator is connected to the freezing compartment, and the freezing compartment is connected to the refrigeration compartment. An air damper structure is provided between the freezing compartment and the refrigeration compartment.

[0012] By controlling the damper structure, it is possible to control whether the cold storage compartment is refrigerated.

[0013] In a preferred embodiment of the above-mentioned refrigeration equipment, the gas-liquid separation device includes a gas-liquid separator, which has a medium inlet, a liquid outlet and a gas outlet. The ice-making outlet is connected to the medium inlet of the gas-liquid separator, the liquid outlet of the gas-liquid separator is connected to the refrigeration evaporator, and the gas outlet of the gas-liquid separator is connected to the return gas port of the compressor.

[0014] A gas-liquid separator is used to separate the refrigerant in a two-phase mixture of gas and liquid discharged from the ice-making evaporator. The liquid refrigerant continues to flow into the refrigeration evaporator for refrigeration, while the gaseous refrigerant flows back into the compressor to continue participating in the heat exchange cycle.

[0015] Secondly, the present invention provides an ice-making control method for a refrigeration device, the refrigeration device comprising a compressor, a condenser, a first throttling mechanism, and a refrigeration evaporator constituting a heat exchange cycle, the refrigeration device further comprising a body, an ice-making evaporator, and a gas-liquid separation device, the ice-making inlet of the ice-making evaporator being connected to the condenser through a second throttling mechanism connected in parallel with the first throttling mechanism, the ice-making outlet of the ice-making evaporator being connected to the refrigeration evaporator through the gas-liquid separation device, the body forming a freezing compartment, a refrigeration compartment, and an ice-making module, the ice-making evaporator being disposed within the ice-making module, the refrigeration evaporator being connected to the freezing compartment, the freezing compartment being connected to the refrigeration compartment, and a damper structure being provided between the freezing compartment and the refrigeration compartment, the ice-making control method comprising:

[0016] Step S1: Control the refrigeration equipment to switch to ice-making mode and close the damper structure;

[0017] Step S2: Determine whether the cold storage compartment needs refrigeration. If so, open the damper structure.

[0018] By controlling the damper structure, it is possible to control whether the gas after heat exchange in the evaporator enters the cold storage compartment. The damper structure is only opened when the cold storage compartment needs cooling to allow gas flow between the cold storage compartment and the evaporator, thus ensuring a reliable temperature inside the cold storage compartment.

[0019] In a preferred embodiment of the ice-making control method for the aforementioned refrigeration equipment, step S2 further includes:

[0020] Obtain the real-time temperature t0 of the cold storage compartment and compare the real-time temperature t0 with the first preset temperature t1;

[0021] If t0 ≥ t1, then it is determined that the cold storage room needs to be refrigerated and the air damper structure should be opened.

[0022] By comparing the real-time refrigeration temperature of the cold storage compartment with the first preset temperature, it is determined whether the cold storage compartment needs refrigeration, thus providing control conditions for the working state of the damper structure.

[0023] In a preferred embodiment of the ice-making control method for the above-mentioned refrigeration equipment, after step S1, the ice-making control method further includes:

[0024] Determine whether the refrigeration equipment has completed the ice-making process;

[0025] If so, keep the damper structure closed and perform de-icing treatment on the ice-making evaporator.

[0026] After the refrigeration equipment completes the ice-making process, it needs to de-ice the ice-making evaporator. At this time, a refrigerant with heat is sent into the ice-making evaporator, causing the refrigeration evaporator to also heat up. Therefore, it is necessary to keep the damper closed to prevent heat from entering the cold storage room.

[0027] In a preferred embodiment of the ice-making control method of the above-mentioned refrigeration equipment, the refrigeration equipment further includes an ice-removing pipeline, a first end of which is connected to the ice-making inlet, and a second end of which is connected to a heat source. The heat source can heat the ice-making evaporator through the ice-removing pipeline to cause ice to detach from the ice-making evaporator.

[0028] The step of de-icing the ice-making evaporator further includes:

[0029] Connect the de-icing pipeline and determine whether the ice-making evaporator has completed de-icing;

[0030] If so, then shut off the de-icing pipeline.

[0031] The de-icing line is used to supply refrigerant with heat into the ice-making evaporator. By controlling the de-icing line, it is possible to control whether the refrigerant with heat enters the ice-making evaporator, and thus control whether the ice-making evaporator de-ices.

[0032] In a preferred embodiment of the ice-making control method for the above-mentioned refrigeration equipment, the step of determining whether the ice-making evaporator has completed de-icing further includes:

[0033] The first duration a0 of the de-icing pipeline and the real-time ice-making temperature T0 of the ice-making module are obtained, and the first duration a0 is compared with the first preset time a1, and the real-time ice-making temperature T0 is compared with the second preset temperature T2.

[0034] If a0≥a1 and / or T0≥T2, then the ice-making evaporator has completed de-icing.

[0035] The system determines whether de-icing is complete by analyzing the duration of de-icing and the temperature of the ice-making module during de-icing, providing precise control conditions for switching the operating conditions of the refrigeration equipment.

[0036] In a preferred embodiment of the ice-making control method for the above-mentioned refrigeration equipment, the step of determining whether the refrigeration equipment has completed the ice-making process further includes:

[0037] The second duration b0 of the refrigeration equipment entering the ice-making mode and the real-time ice-making temperature T0 of the ice-making module are obtained, and the second duration b0 is compared with the second preset time period b1, and the real-time ice-making temperature T0 is compared with the third preset temperature T3.

[0038] If b0≥b1 and / or T0≤T3, then the refrigeration equipment has completed the ice-making process.

[0039] The system determines whether de-icing is complete based on the duration of the ice-making process and the temperature of the ice-making module during ice making, providing precise control conditions for process switching in refrigeration equipment.

[0040] In a preferred embodiment of the ice-making control method for the above-mentioned refrigeration equipment, the step of determining whether the refrigeration equipment has completed the ice-making process is performed before, after, or simultaneously with step S2.

[0041] Since the refrigeration equipment constantly monitors the temperature of the cold storage compartment, the need for refrigeration in the cold storage compartment can occur at any time. If the cold storage compartment needs refrigeration when the refrigeration equipment has just performed the ice-making process and has not yet completed the step of determining whether the refrigeration equipment has completed the ice-making process, the damper structure can be opened to achieve refrigeration of the cold storage compartment.

[0042] In summary, by employing the above technical solution, this invention utilizes a gas-liquid separation device to store the refrigerant that completes heat exchange in the ice-making evaporator during the de-icing process. This separates the gaseous and liquid refrigerant, allowing the liquid refrigerant to continue participating in the heat exchange cycle within the evaporator, while the gaseous refrigerant can be directly returned to the compressor. This prevents high-temperature gaseous media from entering the evaporator and causing a temperature rise, while also preventing excess gaseous refrigerant from condensing into liquid again, effectively mitigating the risk of compressor liquid slugging and improving system operational stability. Furthermore, this portion of gaseous refrigerant can effectively increase the compressor's suction pressure and reduce its compression ratio, thereby reducing the compressor's operating load and the energy consumption of the refrigeration equipment. Alternatively, the gaseous refrigerant can be collected by the gas-liquid separation device and condensed into liquid refrigerant by the low-temperature refrigerant entering the gas-liquid separation device during the next ice-making process in the ice-making evaporator, continuing to participate in the heat exchange cycle. This effectively avoids the problem of compressor liquid slugging and ensures the reliability of the refrigeration equipment. Attached Figure Description

[0043] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0044] Figure 1 This is a schematic diagram of the structure of the refrigeration equipment provided in an embodiment of the present invention;

[0045] Figure 2 This is another structural schematic diagram of the refrigeration equipment provided in an embodiment of the present invention;

[0046] Figure 3 This is another structural schematic diagram of the refrigeration equipment provided in an embodiment of the present invention;

[0047] Figure 4 This is a flowchart of the ice-making mode control of the refrigeration equipment provided in the embodiments of the present invention;

[0048] Figure 5 This is a control flowchart for another ice-making mode of the refrigeration equipment provided in this embodiment of the invention.

[0049] The reference numerals in the figure are as follows:

[0050] 1. Compressor; 2. Condenser; 3. First throttling mechanism; 4. Refrigeration evaporator; 5. Ice-making evaporator; 6. Gas-liquid separation device; 7. De-icing pipeline; 8. Second throttling mechanism; 61. Medium inlet; 62. Liquid outlet; 63. Gas outlet; 10. Body; 11. Freezer compartment; 12. Refrigerator compartment; 13. Ice-making module; 9. Damper structure. Detailed Implementation

[0051] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0052] It should be noted that the terms indicating directions or positional relationships in the description of this invention are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] Furthermore, to better illustrate the technical solution of the present invention, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that the present invention can still be implemented without certain specific details. In some examples, refrigeration principles and other aspects well-known to those skilled in the art are not described in detail, in order to highlight the main points of the present invention.

[0054] As the background technology shows, after ice making in refrigeration equipment, an ice removal process is required. Specifically, high-temperature refrigerant is introduced into the ice-making evaporator to detach the ice from it. After flowing through the ice-making evaporator, the high-temperature refrigerant continues to flow into the refrigeration evaporator. However, in the existing technology, the refrigerant flowing out of the ice-making evaporator directly enters the refrigeration evaporator. After releasing heat in the ice-making evaporator, the high-temperature refrigerant becomes a gas-liquid two-phase mixture. This mixture directly enters the refrigeration evaporator, causing an abnormal increase in the temperature of the refrigeration evaporator. This leads to a decrease in cooling capacity and greater temperature fluctuations in the freezer and refrigerator compartments, affecting the preservation effect of freezing and refrigeration. Moreover, because the ambient temperature of the refrigeration evaporator is low, the gaseous refrigerant in this mixture will condense in the refrigeration evaporator and regenerate into liquid refrigerant. A large amount of liquid refrigerant can easily flow back to the compressor through the return gas line, causing compressor liquid slugging and seriously affecting the reliability of the refrigeration equipment.

[0055] Therefore, such as Figures 1 to 5 As shown, the present invention provides a refrigeration device, which includes a compressor 1, a condenser 2, a first throttling mechanism 3, and a refrigeration evaporator 4 constituting a heat exchange cycle. The refrigeration device also includes an ice-making evaporator 5, a gas-liquid separation device 6, and an ice removal pipeline 7. The ice-making inlet of the ice-making evaporator 5 is connected to the condenser 2 through a second throttling mechanism 8 connected in parallel with the first throttling mechanism 3. The ice-making outlet of the ice-making evaporator 5 is connected to the refrigeration evaporator 4 through the gas-liquid separation device 6. The first end of the ice removal pipeline 7 is connected to the ice-making inlet, and the second end of the ice removal pipeline 7 is connected to a heat source. The heat source can heat the ice-making evaporator 5 through the ice removal pipeline 7 to remove ice from the ice-making evaporator 5.

[0056] This invention utilizes a gas-liquid separation device 6 to store the refrigerant that completes heat exchange in the ice-making evaporator 5 during the de-icing process. This separates the gaseous and liquid refrigerant. The liquid refrigerant enters the refrigeration evaporator 4 to continue participating in the heat exchange cycle, while the gaseous refrigerant can be directly returned to the compressor 1. This prevents high-temperature gaseous media from entering the refrigeration evaporator 4 and causing a temperature rise, while also preventing excess gaseous refrigerant from condensing into liquid again, effectively avoiding the risk of liquid slugging in the compressor 1, improving system operational stability. Moreover, this portion of gaseous refrigerant can effectively increase the suction pressure of the compressor 1, reduce the compression ratio of the compressor 1, and thus reduce the operating load of the compressor 1 and the energy consumption of the refrigeration equipment. Alternatively, the gaseous refrigerant is collected by the gas-liquid separation device and condensed into liquid refrigerant by the low-temperature refrigerant entering the gas-liquid separation device 6 during the next ice-making process in the ice-making evaporator 5, continuing to participate in the heat exchange cycle. This effectively avoids the problem of liquid slugging in the compressor 1 and ensures the reliability of the refrigeration equipment.

[0057] During the ice-making process of the refrigeration equipment, the high-temperature and high-pressure refrigerant discharged from the compressor 1 is sent into the condenser 2 for heat exchange and becomes a liquid refrigerant at room temperature and pressure. The liquid refrigerant is divided into two paths. One path is throttled and depressurized by the first throttling mechanism 3 and then sent to the refrigeration evaporator 4 to achieve refrigeration of the freezer compartment and the refrigerator compartment. The other path is throttled and depressurized by the second throttling mechanism 8 and then sent to the ice-making evaporator 5 to meet the ice-making requirements. After heat exchange in the ice-making evaporator 5, the refrigerant undergoes gas-liquid separation via the gas-liquid separator 6. The liquid refrigerant enters the refrigeration evaporator 4 to continue participating in the heat exchange cycle, while the gaseous refrigerant can flow directly back to the compressor 1. This prevents high-temperature gaseous media from entering the refrigeration evaporator 4 and causing a temperature rise, while also preventing excess gaseous refrigerant from condensing into liquid again, effectively avoiding the risk of liquid slugging in the compressor 1, and improving the system's operational stability. Moreover, this portion of gaseous refrigerant can also effectively increase the suction pressure of the compressor 1, reduce the compression ratio of the compressor 1, and thus reduce the operating load of the compressor 1 and the energy consumption of the refrigeration equipment. Alternatively, the gaseous refrigerant can be collected by the gas-liquid separator 6 and condensed into liquid refrigerant during the next ice-making process in the ice-making evaporator 5, continuing to participate in the heat exchange cycle.

[0058] As one implementation method, such as Figure 1 As shown, the refrigeration equipment also includes a one-in-two-out valve. The valve inlet of the one-in-two-out valve is connected to the condenser outlet of the condenser 2. The first outlet of the one-in-two-out valve is connected to the ice-making evaporator 5 through the second throttling mechanism 8. The second outlet of the one-in-two-out valve is connected to the refrigeration evaporator 4 through the first throttling mechanism 3. The second end of the de-icing pipe 7 is connected to the outlet of the compressor 1. The compressor 1 constitutes the heat source.

[0059] The high-temperature refrigerant discharged from the compressor 1 is directly sent into the ice-making evaporator 5 for de-icing, which quickly increases the temperature of the pipe wall of the ice-making evaporator 5, thereby efficiently melting the ice layer on the surface of the ice-making evaporator 5, and effectively ensuring the de-icing efficiency and de-icing reliability.

[0060] The one-in-two-out valve has a first state where the valve inlet is connected to the first outlet and disconnected from the second outlet, and a second state where the valve inlet is connected to the second outlet and disconnected from the first outlet. When the refrigeration equipment is performing the refrigeration process, the one-in-two-out valve switches to the second state, and the refrigerant discharged from the condenser 2 enters the refrigeration evaporator 4 after passing through the valve inlet, the second outlet and the first throttling mechanism 3 in sequence, thereby achieving the refrigeration of the cold storage compartment and the freezer compartment. When the refrigeration equipment is performing the ice-making process, the one-in-two-out valve switches to the first state, and the refrigerant discharged from the condenser 2 enters the ice-making evaporator 5 after passing through the valve inlet, the first outlet and the second throttling mechanism 8 in sequence, thereby achieving the purpose of ice making in the ice-making module. In the ice-making process, the ice-making evaporator 5 remains in a refrigeration state, so the refrigerant flowing out is a gas-liquid two-phase mixture. After the gas-liquid two-phase mixture enters the gas-liquid separation device 6 and is separated, the liquid refrigerant continues to enter the refrigeration evaporator 4 to continue participating in the heat exchange cycle. Finally, after heat exchange in the refrigeration evaporator 4, it flows back to the compressor 1, while the gaseous refrigerant flows directly back to the compressor 1, completing the refrigerant heat exchange cycle.

[0061] When the refrigeration equipment performs the de-icing process, the inlet-outlet valve switches to the second state, the refrigeration evaporator 4 remains in a refrigeration state, and the de-icing pipeline 7 is opened, introducing part of the exhaust gas from the compressor 1 into the ice-making evaporator 5 for heating. The high-temperature and high-pressure gaseous refrigerant releases heat after entering the ice-making evaporator 5, and part of the gaseous refrigerant will become liquid refrigerant, making the refrigerant discharged from the ice-making evaporator 5 a gas-liquid two-phase mixture. This mixture enters the gas-liquid separation device 6 for gas-liquid separation. The liquid refrigerant flows into the refrigeration evaporator 4 for heat exchange, while the gaseous refrigerant flows directly back to the compressor 1, avoiding the high-temperature gaseous medium from entering the refrigeration evaporator 4 and causing a temperature rise. At the same time, it prevents the excess gaseous refrigerant from condensing and producing liquid again, effectively avoiding the risk of liquid slugging in the compressor 1, improving the stability of system operation. Moreover, this part of the gaseous refrigerant can also effectively increase the suction pressure of the compressor 1, reduce the compression ratio of the compressor 1, and thus reduce the operating load of the compressor 1 and the energy consumption of the refrigeration equipment.

[0062] As another implementation method, such as Figure 2 As shown, the refrigeration equipment also includes a one-in-three-out valve. The valve inlet of the one-in-three-out valve is connected to the condenser outlet of the condenser 2. The first outlet of the one-in-three-out valve is connected to the ice-making evaporator 5 through the second throttling mechanism 8. The third outlet of the one-in-three-out valve is connected to the refrigeration evaporator 4 through the first throttling mechanism 3. The second end of the de-icing pipe 7 is connected to the second outlet of the one-in-three-out valve. The condenser 2 constitutes the heat source.

[0063] The refrigerant after heat exchange in condenser 2 provides heat to ice-making evaporator 5. The temperature of the refrigerant discharged from condenser 2 is relatively mild compared to the discharge from compressor 1, which can prevent the refrigeration evaporator 4 from being subjected to high temperature shock and ensure the reliability of ice removal in ice-making evaporator 5.

[0064] Specifically, the one-in-three-out valve has a first connected state where the valve inlet is connected to the first outlet and disconnected from the second and third outlets, a second connected state where the valve inlet is connected to the second outlet and disconnected from the first and third outlets, and a third connected state where the valve inlet is connected to the third outlet and disconnected from the first and second outlets. The first outlet is connected to the ice-making evaporator 5 through the second throttling mechanism 8, the second outlet is connected to the de-icing pipeline 7, and the third outlet is connected to the refrigeration evaporator 4 through the first throttling mechanism 3.

[0065] When the refrigeration equipment is performing the refrigeration process, the one-in-three-out valve switches to the third connected state. The refrigerant discharged from the condenser 2 passes through the valve inlet, the third outlet and the first throttling mechanism 3 in sequence and then enters the refrigeration evaporator 4 to achieve refrigeration of the cold storage room and the freezer room.

[0066] When the refrigeration equipment performs the ice-making process, the one-in-three-out valve switches to the first connected state. The refrigerant discharged from the condenser 2 passes through the valve inlet, the first outlet, and the second throttling mechanism 8 in sequence before entering the ice-making evaporator 5, thus achieving the purpose of ice making within the ice-making module. During the ice-making process, the ice-making evaporator 5 remains in a refrigeration state, so the refrigerant flowing out is a gas-liquid two-phase mixture. After entering the gas-liquid separator 6 and being separated, the liquid refrigerant continues to enter the refrigeration evaporator 4 to participate in the heat exchange cycle. Finally, after heat exchange in the refrigeration evaporator 4, it flows back to the compressor 1, while the gaseous refrigerant flows directly back to the compressor 1, completing the refrigerant heat exchange cycle.

[0067] When the refrigeration equipment performs the de-icing process, the one-in-three-out valve switches to the second connected state, the refrigeration evaporator 4 remains in a refrigeration state, and the de-icing pipeline 7 is opened, introducing the refrigerant discharged from the condenser 2 into the ice-making evaporator 5 for heating. The medium-temperature and medium-pressure refrigerant from the condenser 2 releases heat after being sent into the ice-making evaporator 5, and some of the gaseous refrigerant will become liquid refrigerant, making the refrigerant discharged from the ice-making evaporator 5 a gas-liquid two-phase mixture. This mixture enters the gas-liquid separation device 6 for gas-liquid separation. The liquid refrigerant flows into the refrigeration evaporator 4 for heat exchange, while the gaseous refrigerant flows directly back to the compressor 1, avoiding the high-temperature gaseous medium from entering the refrigeration evaporator 4 and causing a temperature rise. At the same time, it prevents the excess gaseous refrigerant from condensing and producing liquid again, effectively avoiding the risk of liquid slugging in the compressor 1, improving the stability of system operation. Moreover, this part of the gaseous refrigerant can also effectively increase the suction pressure of the compressor 1, reduce the compression ratio of the compressor 1, and thus reduce the operating load of the compressor 1 and the energy consumption of the refrigeration equipment.

[0068] like Figure 3As shown, the refrigeration equipment also includes a body 10, which has a freezer compartment 11 and a refrigerator compartment 12. An ice-making module 13 is provided in the refrigerator compartment 12. An ice-making evaporator 5 is provided in the ice-making module 13. The refrigeration evaporator 4 is connected to the freezer compartment 11. The freezer compartment 11 is connected to the refrigerator compartment 12. An air damper structure 9 is provided between the freezer compartment 11 and the refrigerator compartment 12.

[0069] By controlling the damper structure 9, it is possible to control whether the gas after heat exchange by the evaporator 4 enters the refrigerator compartment 12. When the refrigerator compartment 12 needs cooling, the damper structure 9 is opened to allow gas flow between the refrigerator compartment 12 and the freezer compartment 11. At this time, the gas generated by the evaporator 4 will enter the refrigerator compartment 12 through the damper structure 9 and the freezer compartment 11, achieving stable cooling of the refrigerator compartment 12. When the refrigerator compartment 12 does not need cooling, the damper structure 9 is closed. Although the evaporator 4 will continue to exchange heat, the gas after heat exchange can only enter the freezer compartment 11, thereby avoiding temperature changes in the refrigerator compartment 12 and ensuring reliable temperature in the refrigerator compartment 12. Especially when the ice-making evaporator 5 is de-icing, the refrigeration evaporator 4 is in heating mode. Since the base temperature of the freezer compartment 11 is lower and the cold capacity redundancy is higher, the heat generated by the refrigeration evaporator 4 will not cause a large change in the temperature inside the freezer compartment 11, which can stably ensure the freezing and preservation effect. At the same time, by utilizing the sealing and isolation effect of the damper structure 9, the heat generated by the refrigeration evaporator 4 will not enter the refrigerator compartment 12, further ensuring the reliability of the temperature inside the refrigerator compartment 12, thereby improving the user experience.

[0070] In one embodiment, the gas-liquid separation device 6 includes a gas-liquid separator, which has a medium inlet 61, a liquid outlet 62 and a gas outlet 63. The ice-making outlet is connected to the medium inlet 61 of the gas-liquid separator, the liquid outlet 62 of the gas-liquid separator is connected to the refrigeration evaporator 4, and the gas outlet 63 of the gas-liquid separator is connected to the return gas port of the compressor 1.

[0071] The gas-liquid two-phase mixture of refrigerant discharged from the ice-making evaporator 5 is separated by a gas-liquid separator, so that the liquid refrigerant continues to flow into the refrigeration evaporator 4 for refrigeration, while the gaseous refrigerant flows back into the compressor 1 to continue participating in the heat exchange cycle.

[0072] The gas-liquid separation device 6 can also be in the form of an evaporator. When the gas-liquid separation device 6 is an evaporator, the heat exchange capacity and gas-liquid separation capacity of the evaporator are stronger, the liquid storage space is larger, and it can even act as a cold source to cool down the cold storage room 12 when the ice-making evaporator 5 is making ice.

[0073] Secondly, the present invention provides an ice-making control method for a refrigeration device. The refrigeration device includes a compressor 1, a condenser 2, a first throttling mechanism 3, and a refrigeration evaporator 4 constituting a heat exchange cycle. The refrigeration device also includes a body 10, an ice-making evaporator 5, and a gas-liquid separation device 6. The ice-making inlet of the ice-making evaporator 5 is connected to the condenser 2 through a second throttling mechanism 8 connected in parallel with the first throttling mechanism 3. The ice-making outlet of the ice-making evaporator 5 is connected to the refrigeration evaporator 4 through the gas-liquid separation device 6. The body 10 forms a freezing compartment 11, a refrigeration compartment 12, and an ice-making module 13. The ice-making evaporator 5 is disposed within the ice-making module 13. The refrigeration evaporator 4 is connected to the freezing compartment 11, and the freezing compartment 11 is connected to the refrigeration compartment 12. A damper structure 9 is provided between the freezing compartment 11 and the refrigeration compartment 12. The ice-making control method includes:

[0074] Step S1: Control the refrigeration equipment to switch to ice-making mode and close the damper structure 9;

[0075] Step S2: Determine whether the cold storage compartment 12 needs refrigeration. If so, open the damper structure 9.

[0076] This invention can control whether the gas after heat exchange by the evaporator 4 enters the refrigerator compartment 12 by controlling the damper structure 9. When the refrigerator compartment 12 needs cooling, the damper structure 9 is opened to allow gas flow between the refrigerator compartment 12 and the freezer compartment 11. At this time, the gas generated by the evaporator 4 will enter the refrigerator compartment 12 through the damper structure 9 and the freezer compartment 11, achieving stable cooling of the refrigerator compartment 12. When the refrigerator compartment 12 does not need cooling, the damper structure 9 is closed. Although the evaporator 4 will continue to exchange heat, the gas after heat exchange can only enter the freezer compartment 11, thereby avoiding temperature changes in the refrigerator compartment 12 and ensuring reliable temperature in the refrigerator compartment 12.

[0077] Especially after the refrigeration equipment completes the ice-making process, ice cubes will adhere to the ice-making evaporator 5. In order to remove the ice cubes from the ice-making evaporator 5 for easy access by users, the ice-making evaporator 5 needs to be de-iced. At this time, a refrigerant with heat is introduced into the ice-making evaporator 5. The heat of the refrigerant melts the surface where the ice cubes are attached to the ice-making evaporator 5. Then, gravity or other methods are used to remove the ice cubes from the ice-making evaporator 5, completing the de-icing process of the ice-making evaporator 5. Although the refrigerant with heat flows into the gas-liquid separator 6 for gas-liquid separation, the temperature of the liquid refrigerant discharged from the gas-liquid separator will still be relatively high, causing the refrigeration evaporator 4 to also heat up. If the damper structure 9 is opened at this time, the gas heated by the refrigeration evaporator 4 will be sent into the cold storage compartment 12, which will cause the temperature of the cold storage compartment 12 to rise. Therefore, the damper structure 9 needs to be closed to prevent heat from entering the cold storage compartment 12, thereby ensuring the refrigeration effect of the cold storage compartment 12. The freezer compartment 11 has a lower base temperature and higher cold capacity redundancy. At this time, the heat generated by the evaporator 4 will not cause a large change in the temperature inside the freezer compartment 11, which can stably ensure the freezing and preservation effect. At the same time, by utilizing the sealing and isolation effect of the damper structure 9, the heat generated by the evaporator 4 will not enter the refrigerator compartment 12, further ensuring the reliability of the temperature inside the refrigerator compartment 12, thereby improving the user experience.

[0078] In one implementation, step S2 further includes:

[0079] The real-time temperature t0 of the cold storage compartment 12 is obtained and compared with the first preset temperature t1;

[0080] If t0 ≥ t1, then it is determined that the cold storage compartment 12 needs to be refrigerated and the damper structure 9 is opened.

[0081] By comparing the real-time refrigeration temperature of the cold storage compartment 12 with the first preset temperature, it is determined whether the cold storage compartment 12 needs refrigeration, thus providing control conditions for the working state of the damper structure 9. When the refrigeration equipment is performing the ice-making process, both the ice-making evaporator 5 and the refrigeration evaporator 4 are in a refrigeration state. At this time, the damper structure 9 is closed, the ice-making evaporator 5 produces ice blocks in the ice-making module 13, and at the same time, the refrigeration evaporator 4 refrigerates the freezing compartment 11, but gas cannot actively flow into the cold storage compartment 12.

[0082] When t0 < t1, it indicates that the temperature of the cold storage compartment 12 has reached the set requirement and no further cooling is needed. At this time, the damper structure 9 is closed to stop the cooling of the cold storage compartment 12.

[0083] Only when t0 ≥ t1 indicates that the cold storage compartment 12 needs cooling. At this time, the damper structure 9 is opened, and the cold energy generated by the evaporator 4 is sent into the cold storage compartment 12, thereby achieving the purpose of cooling the cold storage compartment 12. This ensures that the temperature inside the cold storage compartment 12 can reach a dynamic balance during the ice-making process of the refrigeration equipment, thus guaranteeing the refrigeration effect of the cold storage compartment 12.

[0084] In one embodiment, after step S1, the ice-making control method further includes: determining whether the refrigeration equipment has completed the ice-making process;

[0085] By determining whether the ice-making process is complete, the current operating status of the evaporator 4 can be determined. If the ice-making process is complete, it indicates that the ice-making evaporator 5 will enter the de-icing process, and the evaporator 4 will either begin heating or has already begun heating. In this case, the damper structure 9 should not be opened to prevent the heat from the evaporator 4 from affecting the cold storage compartment 12. If the ice-making process is not complete, it indicates that both the ice-making evaporator 5 and the evaporator 4 are cooling. In this case, the damper structure 9 can be opened to allow cold air to enter the cold storage compartment 12.

[0086] In one embodiment, the step of determining whether the refrigeration equipment has completed the ice-making process is performed before, after, or simultaneously with step S2.

[0087] Since the refrigeration equipment constantly monitors the temperature of the cold storage compartment 12, the need for refrigeration in the cold storage compartment 12 may occur at any time. If the cold storage compartment 12 needs refrigeration when the refrigeration equipment has just performed the ice-making process and has not yet determined whether the ice-making process has been completed, the damper structure 9 can be opened to achieve refrigeration of the cold storage compartment 12.

[0088] Preferably, before step S2, it is determined whether the refrigeration equipment has completed the ice-making process;

[0089] If so, keep the damper structure 9 closed and perform de-icing treatment on the ice-making evaporator 5;

[0090] If not, proceed to step S2.

[0091] Specifically, when the refrigeration equipment makes ice, low-temperature and low-pressure liquid refrigerant enters the ice evaporator 5 to absorb heat and evaporate for cooling, rapidly reducing the temperature of the surface of the ice evaporator 5 and the ice-making module 13. The ice-making module 13 is equipped with an ice box, and the ice evaporator 5 is immersed in the ice box. The ice evaporator 5 will gradually cool the water in the ice box, causing the water to freeze on the ice evaporator 5 to form ice cubes. At the same time, the ice cubes will adhere to the ice evaporator 5.

[0092] That is, after the refrigeration equipment completes the ice-making process, the ice will adhere to the ice-making evaporator 5. In order to remove the ice from the ice-making evaporator 5 for easy access by the user, the ice-making evaporator 5 needs to be de-iced. At this time, a refrigerant with heat is introduced into the ice-making evaporator 5. The heat of the refrigerant melts the surface where the ice is attached to the ice-making evaporator 5. Then, gravity or other methods are used to remove the ice from the ice-making evaporator 5, completing the de-icing process of the ice-making evaporator 5. However, the refrigerant with heat will flow into the refrigeration evaporator 4, causing the refrigeration evaporator 4 to also heat up. If the damper structure 9 is opened at this time, the gas heated by the refrigeration evaporator 4 will be sent into the cold storage compartment 12, which will cause the temperature of the cold storage compartment 12 to rise. Therefore, the damper structure 9 needs to be kept closed to prevent heat from entering the cold storage compartment 12, thereby ensuring the refrigeration effect of the cold storage compartment 12.

[0093] After the refrigeration equipment completes the ice-making process, it needs to de-ice the ice-making evaporator 5. At this time, a refrigerant with heat will be sent into the ice-making evaporator 5, causing the refrigeration evaporator 4 to also heat up. Therefore, the damper structure 9 needs to be kept closed to prevent heat from entering the cold storage compartment 12.

[0094] The refrigeration equipment also includes an ice removal pipe 7, the first end of which is connected to the ice-making inlet, and the second end of which is connected to a heat source. The heat source can heat the ice-making evaporator 5 through the ice removal pipe 7 to remove ice from the ice-making evaporator 5. (As described above...) Figure 1 and 2 Depending on the different configurations of the de-icing pipeline 7, the heat source can be either the compressor 1 or the condenser 2; the specific details will not be repeated here.

[0095] The step of de-icing the ice-making evaporator 5 further includes:

[0096] Connect the de-icing pipeline 7 and determine whether the ice-making evaporator 5 has completed de-icing;

[0097] If so, then shut off the de-icing pipeline 7.

[0098] The de-icing pipe 7 is used to supply refrigerant with heat to the ice-making evaporator 5. By controlling the de-icing pipe 7, the entry of the refrigerant with heat into the ice-making evaporator 5 can be controlled, thereby controlling whether the ice-making evaporator 5 performs de-icing. When de-icing of the ice-making evaporator 5 is not required, the de-icing pipe 7 is kept closed. At this time, the low-temperature, low-pressure liquid refrigerant formed after throttling and depressurization by the throttling mechanism in the refrigeration equipment will enter the ice-making evaporator 5 for refrigeration, realizing the normal ice-making process of the refrigeration equipment. When de-icing of the ice-making evaporator 5 is required, the de-icing pipe 7 is opened, and the refrigerant with heat enters the ice-making evaporator 5, raising the pipe wall temperature of the ice-making evaporator 5, thereby melting the surface where the ice is attached to the ice-making evaporator 5, eliminating the adhesion of the ice, and realizing the detachment of the ice. At the same time, the low-temperature, low-pressure liquid refrigerant formed after the throttling and depressurization mechanism stops flowing into the ice-making evaporator 5. This avoids the problems of temperature disorder, mutual cancellation of heating and cooling, low ice removal efficiency, and incomplete ice removal caused by simultaneously sending hot refrigerant and low-temperature, low-pressure liquid refrigerant into the ice-making evaporator 5. This ensures the reliability of the ice-making evaporator 5 in the ice-making and ice removal processes, and ensures the stable operation and reliable operation of the refrigeration equipment.

[0099] The step of determining whether the ice-making evaporator 5 has completed de-icing further includes:

[0100] The first duration a0 of the de-icing pipeline 7 and the real-time ice-making temperature T0 of the ice-making module 13 are obtained, and the first duration a0 is compared with the first preset time a1, and the real-time ice-making temperature T0 is compared with the second preset temperature T2.

[0101] If a0≥a1 and / or T0≥T2, then the ice-making evaporator 5 is confirmed to have completed de-icing.

[0102] By combining the duration of de-icing with the real-time temperature of the ice-making module 13 as dual-dimensional parameters to collaboratively determine the completion status of de-icing, compared with single-time or single-temperature judgment methods, it can effectively avoid the problems of misjudgment and omission in de-icing judgment, and provide a reliable control basis for the process switching of refrigeration equipment.

[0103] The first preset time a1 can be determined based on the size and heat exchange area of ​​the ice evaporator 5. The first preset time a1 is the basic duration to ensure sufficient melting of the ice layer and complete detachment of the ice. When the ice evaporator 5 has completed the first preset time a1, the ice layer on its surface has melted, and the ice has detached from the ice evaporator 5. If the first duration a0 is less than the first preset time a1, even if the temperature of the ice-making module 13 is high, insufficient melting of the ice layer and ice sticking together and failing to detach can easily occur, compromising the reliability of the detachment process. The first duration a0 ranges from 5 seconds to 300 seconds, preferably 15 seconds.

[0104] Similarly, the second preset temperature T2 is also determined based on the size of the ice evaporator 5, the heat exchange area, and the size of the ice-making module 13. The temperature inside the ice-making module 13 also affects the thickness of the ice layer on the ice evaporator 5 or the size of the ice cubes. Therefore, the temperature of the ice-making module 13 needs to be considered. When the real-time ice-making temperature T0 of the ice-making module 13 is greater than the second preset temperature T2, it indicates that the heat from the ice evaporator 5 has been transferred to the ice-making module 13 through the ice cubes, the ice layer on the surface of the ice evaporator 5 has melted sufficiently, and the ice cubes can be reliably removed. If the ice evaporator 5 is continuously de-iced, it may cause the ice cubes inside the ice-making module 13 to melt, thus failing to meet the user's demand for ice. The value range of the second preset temperature T2 is -10℃ to -1℃, preferably -5℃.

[0105] Preferably, when determining whether the ice evaporator 5 has completed de-icing, it is necessary to consider both the duration of de-icing by the ice evaporator 5 and the temperature inside the ice-making module 13. Only when a0≥a1 and T0≥T2 can it be determined that the ice evaporator 5 has completed de-icing, and it can also ensure that the ice provided by the refrigeration equipment can meet the user's needs and improve the user's experience.

[0106] Furthermore, after confirming that the ice-making evaporator 5 has completed de-icing, the system checks whether the current ice quantity of the refrigeration equipment meets the requirements, i.e., whether the refrigeration equipment is at full ice. If the requirements are met, the refrigeration equipment exits the ice-making mode. If the requirements are not met, the refrigeration equipment continues to enter the ice-making mode.

[0107] Alternatively, after confirming that the ice-making evaporator 5 has completed de-icing, check whether there is sufficient water in the current refrigeration equipment for ice making, i.e., whether the refrigeration equipment is short of water. If there is a water shortage, the refrigeration equipment exits the ice-making mode. If there is no water shortage, the refrigeration equipment continues to enter the ice-making mode.

[0108] The step of determining whether the refrigeration equipment has completed the ice-making process further includes:

[0109] Get the second duration b0 of the refrigeration device entering the ice-making mode and the real-time ice-making temperature T0 of the ice-making module 13 (11), and compare the second duration b0 with the second preset time period b1, and compare the real-time ice-making temperature T0 with the third preset temperature T3;

[0110] If b0≥b1 and / or T0≤T3, then the refrigeration equipment has completed the ice-making process.

[0111] The second preset time b1 can be determined based on the size, heat exchange area, and ice production capacity parameters of the ice evaporator 5. The second preset time b1 is the basic ice-making duration to ensure the water is fully frozen and formed. Under the premise of meeting basic refrigeration requirements, when the ice evaporator 5 continues to make ice for the duration of the second preset time b1, theoretically, the ice layer thickness and ice block size on the ice evaporator 5 can meet the rated forming requirements, initially satisfying the ice-making needs. If the second duration b0 is less than the second preset time b1, even if the temperature of the ice-making module 13 is low, problems such as a thin ice layer and incomplete ice block formation may easily occur. The value of the second preset time b1 ranges from 3 minutes to 10 minutes, preferably 8 minutes.

[0112] Similarly, the third preset temperature T3 can be determined based on the size of the ice-making evaporator 5, the heat exchange area, and the ice-making operating conditions. The real-time temperature of the ice-making module 13 directly affects the freezing rate of the water and the quality of the ice blocks. If the temperature of the ice-making module 13 is too high, it will lead to a slow freezing rate, loose ice blocks, and insufficient thickness. Therefore, the temperature of the ice-making module 13 needs to be considered. When the real-time ice-making temperature T0 of the ice-making module 13 is less than or equal to the third preset temperature T3, it indicates that the low-temperature environment of the ice-making module 13 is stable and can ensure the continuous and stable freezing of the water on the surface of the ice-making evaporator 53. However, when the real-time ice-making temperature T0 of the ice-making module 13 is greater than the third preset temperature T3, the quality and thickness of the ice blocks on the ice-making evaporator 5 cannot be guaranteed. The value range of the third preset temperature T3 is -10℃ to -1℃, preferably -5℃. It should be noted that the third preset temperature T3 is always less than the second preset temperature T2.

[0113] Preferably, when determining whether the refrigeration equipment has completed the ice-making process, it is necessary to consider both the duration of ice making in the ice-making evaporator 5 and the temperature inside the ice-making module 13. The second duration b0 ensures that the ice thickness meets the standard, and the real-time ice-making temperature T0 ensures the stability of the ice-making environment. This avoids problems such as incomplete ice making and poor ice formation under high-temperature conditions. By using a dual-condition coupling judgment method, the accuracy of the ice-making completion judgment is effectively improved, avoiding insufficient ice making or ineffective long-term refrigeration caused by misjudgment. This ensures the quality of ice formation while optimizing the energy consumption of the equipment.

[0114] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A refrigeration device comprising a compressor (1), a condenser (2), a first throttling mechanism (3), and a refrigeration evaporator (4) constituting a heat exchange cycle, characterized in that: The refrigeration equipment also includes an ice-making evaporator (5), a gas-liquid separation device (6), and an ice removal pipeline (7). The ice-making inlet of the ice-making evaporator (5) is connected to the condenser (2) through a second throttling mechanism (8) connected in parallel with the first throttling mechanism (3). The ice-making outlet of the ice-making evaporator (5) is connected to the refrigeration evaporator (4) through the gas-liquid separation device (6). The first end of the ice removal pipeline (7) is connected to the ice-making inlet, and the second end of the ice removal pipeline (7) is connected to a heat source. The heat source can heat the ice-making evaporator (5) through the ice removal pipeline (7) to remove ice from the ice-making evaporator (5).

2. The refrigeration equipment according to claim 1, characterized in that: The refrigeration equipment also includes a one-in-two-out valve. The valve inlet of the one-in-two-out valve is connected to the condenser outlet of the condenser (2). The first outlet of the one-in-two-out valve is connected to the ice-making evaporator (5) through the second throttling mechanism (8). The second outlet of the one-in-two-out valve is connected to the refrigeration evaporator (4) through the first throttling mechanism (3). The second end of the de-icing pipe (7) is connected to the outlet of the compressor (1). The compressor (1) constitutes the heat source.

3. The refrigeration equipment according to claim 1, characterized in that, The refrigeration equipment also includes a three-inlet valve, the valve inlet of which is connected to the condenser outlet of the condenser (2), the first outlet of which is connected to the ice-making evaporator (5) through the second throttling mechanism (8), the third outlet of which is connected to the refrigeration evaporator (4) through the first throttling mechanism (3), the second end of the de-icing pipe (7) is connected to the second outlet of the three-inlet valve, and the condenser (2) constitutes the heat source.

4. The refrigeration equipment according to claim 1, characterized in that, The refrigeration equipment also includes a main body (10), which has a freezing chamber (11) and a refrigeration chamber (12). An ice-making module (13) is provided in the refrigeration chamber (12). An ice-making evaporator (5) is provided in the ice-making module (13). The refrigeration evaporator (4) is connected to the freezing chamber (11). The freezing chamber (11) is connected to the refrigeration chamber (12). A damper structure (9) is provided between the freezing chamber (11) and the refrigeration chamber (12).

5. The refrigeration equipment according to claim 1, characterized in that, The gas-liquid separation device (6) includes a gas-liquid separator, which is provided with a medium inlet (61), a liquid outlet (62) and a gas outlet (63). The ice-making outlet is connected to the medium inlet (61) of the gas-liquid separator, the liquid outlet (62) of the gas-liquid separator is connected to the refrigeration evaporator (4), and the gas outlet (63) of the gas-liquid separator is connected to the return gas port of the compressor (1).

6. A method for controlling ice making in a refrigeration device, the refrigeration device comprising a compressor (1), a condenser (2), a first throttling mechanism (3), and a refrigeration evaporator (4) constituting a heat exchange cycle, characterized in that: The refrigeration equipment further includes a main body (10), an ice-making evaporator (5), and a gas-liquid separation device (6). The ice-making inlet of the ice-making evaporator (5) is connected to the condenser (2) through a second throttling mechanism (8) connected in parallel with the first throttling mechanism (3). The ice-making outlet of the ice-making evaporator (5) is connected to the refrigeration evaporator (4) through the gas-liquid separation device (6). The main body (10) has a freezing chamber (11), a cold storage chamber (12), and an ice-making module (13). The ice-making evaporator (5) is located in the ice-making module (13). The refrigeration evaporator (4) is connected to the freezing chamber (11). The freezing chamber (11) is connected to the cold storage chamber (12). A damper structure (9) is provided between the freezing chamber (11) and the cold storage chamber (12). The ice-making control method includes: Step S1: Control the refrigeration equipment to switch to ice-making mode and close the damper structure (9). Step S2: Determine whether the cold storage compartment (12) needs refrigeration. If so, open the damper structure (9).

7. The ice-making control method according to claim 6, characterized in that: Step S2 further includes: Obtain the real-time temperature t0 of the cold storage room (12) and compare the real-time temperature t0 with the first preset temperature t1; If t0≥t1, then the cold storage compartment (12) needs to be refrigerated and the damper structure (9) is opened.

8. The ice-making control method according to claim 7, characterized in that: Following step S1, the ice-making control method further includes: Determine whether the refrigeration equipment has completed the ice-making process; If so, keep the damper structure (9) closed and de-ice the ice-making evaporator (5).

9. The ice-making control method according to claim 8, characterized in that: The refrigeration equipment also includes an ice removal pipe (7), the first end of which is connected to the ice-making inlet, and the second end of which is connected to a heat source. The heat source can heat the ice-making evaporator (5) through the ice removal pipe (7) to remove ice from the ice-making evaporator (5). The step of de-icing the ice-making evaporator (5) further includes: Connect the de-icing pipeline (7) and determine whether the ice-making evaporator (5) has completed de-icing; If so, then shut off the de-icing pipeline (7).

10. The ice-making control method according to claim 9, characterized in that: The step of determining whether the ice-making evaporator (5) has completed de-icing further includes: Obtain the first duration a0 of the de-icing pipeline (7) and the real-time ice-making temperature T0 of the ice-making module (13), and compare the first duration a0 with the first preset time a1, and compare the real-time ice-making temperature T0 with the second preset temperature T2. If a0≥a1 and / or T0≥T2, then the ice-making evaporator (5) is confirmed to have completed de-icing.

11. The ice-making control method according to claim 8, characterized in that: The step of determining whether the refrigeration equipment has completed the ice-making process further includes: Get the second duration b0 of the refrigeration equipment entering the ice-making mode and the real-time ice-making temperature T0 of the ice-making module (13), and compare the second duration b0 with the second preset time period b1, and compare the real-time ice-making temperature T0 with the third preset temperature T3; If b0≥b1 and / or T0≤T3, then the refrigeration equipment has completed the ice-making process.

12. The ice-making control method according to claim 8, characterized in that: The step of determining whether the refrigeration equipment has completed the ice-making process can be performed before, after, or simultaneously with step S2.

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