Refrigeration appliance and ice making control method thereof

Abstract

The present application relates to the refrigeration technical field, specifically provide a kind of refrigeration equipment and its ice making control method, to solve the problem that the refrigeration effect of refrigeration compartment is poor and the user experience is affected after the refrigeration equipment is added ice making function.To this end, the ice making control method of the refrigeration equipment of the present application comprises: controlling the refrigeration equipment to enter ice making mode, and closing the refrigeration fan;Determine whether the refrigeration compartment needs refrigeration, if so, open the refrigeration fan.By controlling the refrigeration fan, it can be controlled whether the gas after heat exchange of refrigeration evaporator enters the refrigeration compartment, only when the refrigeration compartment needs refrigeration, the refrigeration fan is started to realize the gas flow between the refrigeration compartment and the refrigeration evaporator, and the temperature in the refrigeration compartment is guaranteed reliably.

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 refrigerator evaporator. The refrigerant discharged from the condenser passes through a throttling mechanism and then sequentially through the ice-making evaporator and the refrigerator evaporator, thus achieving both ice-making and refrigeration of the refrigerator compartment.

[0003] However, in actual use, ice making and refrigeration of the cold storage compartment do not occur simultaneously. When the demand for ice making is high, the refrigeration evaporator is always in a cooling state, which will cause the temperature of the cold storage compartment to be too low and affect the refrigeration effect. Moreover, after the refrigeration equipment makes ice, an ice removal process is required. Specifically, high-temperature refrigerant is sent into the ice evaporator to remove the ice from it. After flowing through the ice evaporator, the high-temperature refrigerant will continue to flow into the refrigeration evaporator, causing the refrigeration evaporator to be in a heating state, which will cause the temperature of the cold storage compartment to rise, also affecting the refrigeration effect and seriously impacting the user experience. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem that the addition of ice-making function to existing refrigeration equipment will result in poor refrigeration effect of the cold storage room and affect the user experience.

[0005] In a first aspect, the present invention provides an ice-making control method for a refrigeration device, the refrigeration device comprising a main body, a refrigeration fan, and an ice-making evaporator and a refrigeration evaporator connected in series, the main body having a refrigeration compartment, the refrigeration compartment having an ice-making module, the ice-making evaporator being located within the ice-making module, and both the refrigeration evaporator and the refrigeration fan being connected to the refrigeration compartment.

[0006] The ice-making control method includes:

[0007] Step S1: Control the refrigeration equipment to enter the ice-making mode and turn off the refrigeration fan;

[0008] Step S2: Determine whether the cold storage room needs refrigeration. If so, turn on the refrigeration fan.

[0009] By controlling the refrigeration fan, it is possible to control whether the gas after heat exchange in the refrigeration evaporator enters the refrigeration compartment. The refrigeration fan is only turned on when the refrigeration compartment needs cooling to achieve gas flow between the refrigeration compartment and the refrigeration evaporator, thus ensuring a reliable temperature inside the refrigeration compartment.

[0010] In a preferred embodiment of the ice-making control method for the aforementioned refrigeration equipment, step S2 further includes:

[0011] Obtain the real-time refrigeration temperature t0 of the cold storage compartment and compare the real-time refrigeration temperature t0 with the first preset temperature t1;

[0012] If t0 ≥ t1, then it is determined that the cold storage room needs to be refrigerated and the refrigeration fan should be turned on.

[0013] By comparing the real-time 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 whether the refrigeration fan should work.

[0014] 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:

[0015] Determine whether the refrigeration equipment has completed the ice-making process;

[0016] If so, keep the refrigeration fan off and de-ice the ice-making evaporator.

[0017] 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, the refrigeration fan needs to be kept off to prevent heat from entering the refrigeration room.

[0018] 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, the first end of which is connected to the ice-making evaporator and the second end of which is connected to a heat source, the heat source being able to send refrigerant into the ice-removing pipeline to heat the ice-making evaporator;

[0019] The step of de-icing the ice-making evaporator further includes:

[0020] Connect the de-icing pipeline and determine whether the ice-making evaporator has completed de-icing;

[0021] If so, then shut off the de-icing pipeline.

[0022] 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 performs de-icing.

[0023] In a preferred embodiment of the ice-making control method for the above-mentioned refrigeration equipment, the refrigeration equipment includes a compressor, the second end of the de-icing pipeline is connected to the compressor outlet, and the compressor constitutes the heat source.

[0024] 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.

[0025] In a preferred embodiment of the ice-making control method of the above-mentioned refrigeration equipment, the refrigeration equipment includes a condenser and a first on / off mechanism. The first on / off mechanism is provided with an inlet, a first outlet and a second outlet, and the first on / off mechanism has a first state in which the inlet is connected to the first outlet and disconnected from the second outlet, and a second state in which the inlet is connected to the second outlet and disconnected from the first outlet. The condenser outlet is connected to the inlet, the first outlet is connected to the ice-making evaporator through a throttling mechanism, the second end of the de-icing pipe is connected to the second outlet, and the condenser constitutes the heat source.

[0026] The step of connecting the de-icing pipeline further includes:

[0027] Control the first switching mechanism to switch to the second state.

[0028] 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 discharge from the compressor, which can avoid the refrigeration evaporator being subjected to high temperature shock and ensure the reliability of ice removal in the ice-making evaporator.

[0029] 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 includes:

[0030] 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.

[0031] If a0≥a1 and / or T0≥T2, then the ice-making evaporator has completed de-icing.

[0032] The duration of de-icing and the temperature of the ice-making module during de-icing are used to determine whether de-icing is complete, providing control conditions for process switching of the refrigeration equipment.

[0033] 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 includes:

[0034] 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.

[0035] If b0≥b1 and / or T0≤T3, then the ice-making equipment has completed the ice-making process.

[0036] The duration of the ice-making process and the temperature of the ice-making module during ice making are used to determine whether de-icing is complete, providing control conditions for process switching of the refrigeration equipment.

[0037] In a preferred embodiment of the ice-making control method for the aforementioned refrigeration equipment, the refrigeration equipment has a refrigeration mode. When the refrigeration equipment is in the refrigeration mode, the refrigeration evaporator can refrigerate the refrigeration compartment. The ice-making control method further includes:

[0038] Control the refrigeration equipment to switch to refrigeration mode and turn on the refrigeration fan;

[0039] The real-time refrigeration temperature t0 of the cold storage compartment is detected and compared with the fourth preset temperature t4.

[0040] If t0 ≥ t4, then the refrigeration fan is turned off and the de-icing pipeline is opened.

[0041] During the refrigeration process of the cold storage room, the ice evaporator also operates in a refrigeration mode, which can cause frost or even ice to form on the surface of the ice evaporator. Therefore, after the refrigeration of the cold storage room is stopped, it is necessary to open the de-icing pipe to melt the frost or ice on the surface of the ice evaporator to ensure the reliable operation of the ice evaporator.

[0042] In a preferred embodiment of the ice-making control method for the aforementioned refrigeration equipment, after the de-icing pipeline is connected, the ice-making control method further includes:

[0043] Obtain the third duration h0 of the de-icing pipeline being connected, and compare the third duration h0 with the third preset time period h1;

[0044] If h0 ≥ h1, then the de-icing pipeline is shut off.

[0045] After the refrigeration of the cold storage compartment is completed, the duration of the de-icing process is used to determine whether de-icing is complete, thus providing control conditions for the process switching of the refrigeration equipment.

[0046] 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.

[0047] 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.

[0048] Secondly, the present invention provides a refrigeration device that applies the above-described ice-making control method.

[0049] It is understandable that this refrigeration equipment possesses all the technical effects achievable by the aforementioned ice-making control method, which will not be elaborated upon here.

[0050] By adopting the above technical solution, the present invention can control whether the gas after heat exchange in the refrigeration evaporator enters the refrigeration compartment by controlling the refrigeration fan. When the refrigeration compartment needs cooling, the refrigeration fan is turned on to realize the gas flow between the refrigeration compartment and the refrigeration evaporator. When the refrigeration compartment does not need cooling, the refrigeration fan stops working. Although the refrigeration evaporator continues to exchange heat, the gas after heat exchange will not be sent into the refrigeration compartment by the refrigeration fan, thereby avoiding temperature changes in the refrigeration compartment, ensuring the reliability of the temperature in the refrigeration compartment, and thus improving the user experience. Attached Figure Description

[0051] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0052] Figure 1 This is a schematic diagram of the structure of the refrigeration equipment provided in an embodiment of the present invention;

[0053] Figure 2 This is another structural schematic diagram of the refrigeration equipment provided in an embodiment of the present invention;

[0054] Figure 3 This is another structural schematic diagram of the refrigeration equipment provided in an embodiment of the present invention;

[0055] Figure 4 This is another structural schematic diagram of the refrigeration equipment provided in an embodiment of the present invention;

[0056] Figure 5 This is another structural schematic diagram of the refrigeration equipment provided in an embodiment of the present invention;

[0057] Figure 6 This is a flowchart of the ice-making mode control of the refrigeration equipment provided in the embodiments of the present invention;

[0058] Figure 7 This is a control flowchart of another ice-making mode of the refrigeration equipment provided in this embodiment of the invention;

[0059] Figure 8 This is a flowchart of the refrigeration mode control of the refrigeration equipment provided in the embodiment of the present invention.

[0060] The reference numerals in the figure are as follows:

[0061] 1. Main body; 2. Refrigeration fan; 3. Ice-making evaporator; 4. Refrigeration evaporator; 11. Ice-making module; 12. Refrigeration compartment; 5. De-icing pipeline; 6. Compressor; 7. Condenser; 8. First on / off mechanism; 9. Throttling mechanism; 101. Freezing evaporator; 102. Freezing throttling structure. Detailed Implementation

[0062] 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.

[0063] 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.

[0064] 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 be implemented even 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.

[0065] As the background technology shows, in actual use, ice making and refrigeration of the cold storage compartment are not carried out simultaneously. When the demand for ice making is large, the refrigeration evaporator is always in a cooling state, which will cause the temperature of the cold storage compartment to be too low and affect the refrigeration effect. Moreover, after the refrigeration equipment makes ice, an ice removal process is required. Specifically, high-temperature refrigerant is sent into the ice-making evaporator to remove the ice from it. After flowing through the ice-making evaporator, the high-temperature refrigerant will continue to flow into the refrigeration evaporator, causing the refrigeration evaporator to be in a heating state, which will cause the temperature of the cold storage compartment to rise, which will also affect the refrigeration effect and seriously affect the user experience.

[0066] Therefore, such as Figures 1 to 8 As shown, this invention provides an ice-making control method for a refrigeration device. Specifically, as follows... Figure 5 As shown, the refrigeration equipment includes a main body 1, a refrigeration fan 2, and an ice-making evaporator 3 and a refrigeration evaporator 4 connected in series. The main body 1 contains an ice-making module 11 and a refrigeration compartment 12. The ice-making evaporator 3 is located within the ice-making module 11, and both the refrigeration evaporator 4 and the refrigeration fan 2 are connected to the refrigeration compartment 12. Figure 6 As shown, the ice-making control method includes:

[0067] Step S1: Control the refrigeration equipment to enter the ice-making mode and turn off the refrigeration fan 2;

[0068] Step S2: Determine whether the cold storage compartment 12 needs refrigeration. If so, turn on the refrigeration fan 2.

[0069] By controlling the refrigeration fan 2, it is possible to control whether the gas after heat exchange in the refrigeration evaporator 4 enters the refrigeration compartment 12. When the refrigeration compartment 12 needs cooling, the refrigeration fan 2 is turned on to achieve gas flow between the refrigeration compartment 12 and the refrigeration evaporator 4. When the refrigeration compartment 12 does not need cooling, the refrigeration fan 2 stops working. Although the refrigeration evaporator 4 continues to exchange heat, the gas after heat exchange will not be sent into the refrigeration compartment 12 by the refrigeration fan 2, thereby avoiding temperature changes in the refrigeration compartment 12, ensuring the temperature reliability of the refrigeration compartment 12, and thus improving the user experience.

[0070] In one implementation, such as Figure 7 As shown, step S2 further includes:

[0071] Obtain the real-time refrigeration temperature t0 of the cold storage compartment 12 and compare it with the first preset temperature t1;

[0072] If t0 ≥ t1, then it is determined that the cold storage room 12 needs to be refrigerated and the refrigeration fan 2 is turned on.

[0073] 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 whether the refrigeration fan 2 should work. When the refrigeration equipment is performing the ice-making process, the ice-making evaporator 3 and the refrigeration evaporator 4 are always in a refrigeration state. At this time, the refrigeration fan 2 stops working, the ice-making evaporator 3 produces ice cubes in the ice-making module 11, and although the refrigeration evaporator 4 refrigerates the surrounding air, the air cannot actively flow into the cold storage compartment 12. That is, when the refrigeration fan 2 stops working, the cold storage compartment 12 cannot be refrigerated.

[0074] 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 refrigeration fan 2 is turned off to stop the cooling of the cold storage compartment 12.

[0075] Only when t0 ≥ t1 indicates that the cold storage compartment 12 needs cooling. At this time, the refrigeration fan 2 is turned on, and the cold energy generated by the refrigeration 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.

[0076] The first preset temperature t1 can be set according to the user's temperature requirements for the cold storage room 12, and no restrictions are imposed on it in this application.

[0077] In one embodiment, after step S1, the ice-making control method further includes: determining whether the refrigeration equipment has completed the ice-making process;

[0078] By determining whether the ice-making process is complete, the current operating status of the refrigeration evaporator 4 can be determined. If the ice-making process is complete, it indicates that the ice-making evaporator 3 will enter the de-icing process, and the refrigeration evaporator 4 will begin heating or has already begun heating. In this case, the refrigeration fan 2 should not be turned on to avoid the heat from the refrigeration evaporator 4 affecting the refrigerator compartment 12. If the ice-making process is not complete, it indicates that both the ice-making evaporator 3 and the refrigeration evaporator 4 are cooling. In this case, the refrigeration fan 2 can be turned on to deliver cold air into the refrigerator compartment 12.

[0079] 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.

[0080] 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 refrigeration fan 2 can be turned on to refrigerate the cold storage compartment 12.

[0081] Preferably, such as Figure 7 As shown, before step S2, it is determined whether the refrigeration equipment has completed the ice-making process; if yes, the refrigeration fan 2 is kept off and the ice-making evaporator 5 is de-iced; if no, step S2 is executed.

[0082] When the refrigeration equipment makes ice, low-temperature and low-pressure liquid refrigerant enters the ice evaporator 3 to absorb heat and evaporate for cooling, rapidly reducing the temperature of the surface of the ice evaporator 3 and the ice-making module 11. The ice-making module 11 is equipped with an ice box, and the ice evaporator 3 is immersed in the ice box. The ice evaporator 3 will gradually cool the water in the ice box, causing the water to freeze on the ice evaporator 3 to form ice cubes. At the same time, the ice cubes will adhere to the ice evaporator 3.

[0083] That is, after the refrigeration equipment completes the ice-making process, the ice will adhere to the ice-making evaporator 3. In order to remove the ice from the ice-making evaporator 3 for easy access by the user, the ice-making evaporator 3 needs to be de-iced. At this time, a refrigerant with heat is introduced into the ice-making evaporator 3. The heat of the refrigerant melts the surface of the ice that is attached to the ice-making evaporator 3. Then, the ice is removed from the ice-making evaporator 3 by gravity or other means, thus completing the de-icing process of the ice-making evaporator 3. However, the refrigerant with heat will flow into the refrigerator evaporator 4, causing the refrigerator evaporator 4 to also heat up. If the refrigerator fan 2 is working at this time, the gas heated by the refrigerator evaporator 4 will be driven by the refrigerator fan 2 and sent into the refrigerator compartment 12, which will cause the temperature of the refrigerator compartment 12 to rise. Therefore, it is necessary to keep the refrigerator fan 2 off to prevent heat from entering the refrigerator compartment 12, thereby ensuring the refrigeration effect of the refrigerator compartment 12.

[0084] If the refrigeration equipment has not completed the ice-making process, it indicates that both the ice-making evaporator 3 and the refrigeration evaporator 4 are in the refrigeration state. At this time, the refrigeration fan 2 can be turned on to send cold air into the refrigeration compartment 12 for refrigeration, so as to ensure the refrigeration effect of the refrigeration compartment 12.

[0085] As one implementation method, such as Figures 1 to 4 As shown, the refrigeration equipment also includes an ice removal pipeline 5. The first end of the ice removal pipeline 5 is connected to the ice-making evaporator 3, and the second end is connected to a heat source. The heat source can send refrigerant into the ice removal pipeline 5 to heat the ice-making evaporator 3.

[0086] The step of de-icing the ice-making evaporator 3 further includes:

[0087] Connect the de-icing pipeline 5 and determine whether the ice-making evaporator 3 has completed de-icing;

[0088] If so, then shut off the de-icing pipeline 5.

[0089] The de-icing pipe 5 is used to supply refrigerant with heat to the ice-making evaporator 3. By controlling the de-icing pipe 5, the entry of the refrigerant with heat into the ice-making evaporator 3 can be controlled, thereby controlling whether the ice-making evaporator 3 performs de-icing. When de-icing of the ice-making evaporator 3 is not required, the de-icing pipe 5 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 3 for refrigeration, realizing the normal ice-making process of the refrigeration equipment. When de-icing of the ice-making evaporator 3 is required, the de-icing pipe 5 is opened, and the refrigerant with heat enters the ice-making evaporator 3, raising the pipe wall temperature of the ice-making evaporator 3, thereby melting the surface where the ice is attached to the ice-making evaporator 3, 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 3. 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 heat-containing refrigerant and low-temperature, low-pressure liquid refrigerant into the ice-making evaporator 3. This ensures the reliability of the ice-making evaporator 3 in the ice-making and ice removal processes, and ensures the stable operation and reliable operation of the refrigeration equipment.

[0090] As one implementation method, such as Figure 1 As shown, the refrigeration equipment includes a compressor 6, the second end of the de-icing pipeline 5 is connected to the outlet of the compressor 6, and the compressor 6 constitutes the heat source.

[0091] The high-temperature refrigerant discharged from the compressor 6 is directly sent into the ice evaporator 3 for de-icing, which quickly increases the temperature of the pipe wall of the ice evaporator 3, thereby efficiently melting the ice layer on the surface of the ice evaporator 3, effectively ensuring the de-icing efficiency and reliability.

[0092] As another implementation method, such as Figure 2 As shown, the refrigeration equipment includes a condenser 7 and a first on / off mechanism 8. The first on / off mechanism 8 is provided with an inlet, a first outlet and a second outlet. The first on / off mechanism 8 has a first state in which the inlet is connected to the first outlet and disconnected from the second outlet, and a second state in which the inlet is connected to the second outlet and disconnected from the first outlet. The condenser outlet of the condenser 7 is connected to the inlet. The first outlet is connected to the ice-making evaporator 3 through a throttling mechanism 9. The second end of the de-icing pipe 5 is connected to the second outlet. The condenser 7 constitutes the heat source.

[0093] The step of connecting the de-icing pipeline 5 further includes:

[0094] Control the first on / off mechanism 8 to switch to the second state.

[0095] The refrigerant after heat exchange in condenser 7 provides heat to ice-making evaporator 3. The temperature of the refrigerant discharged from condenser 7 is relatively mild compared to the discharge from compressor 6, which can avoid the refrigeration evaporator being subjected to high temperature shock and ensure the reliability of ice removal in ice-making evaporator 3.

[0096] When the refrigeration equipment is in the ice-making or refrigeration process, the first on / off mechanism 8 remains in the first state. The refrigerant flowing out of the condenser 7 flows to the throttling mechanism 9 through the inlet and the first outlet. After the throttling mechanism 9 reduces the pressure and temperature, it is sent into the ice-making evaporator 3 and the refrigeration evaporator 4. The ice-making evaporator 3 can make ice, and the refrigeration evaporator 4 can also refrigerate, thus meeting the normal ice-making and refrigeration needs of the refrigeration equipment.

[0097] When the refrigeration equipment enters the de-icing process, that is, when the ice-making evaporator 3 needs to be de-iced, the first on / off mechanism 8 switches to the second state, thereby cutting off the connection between the condenser 7 and the throttling mechanism 9, and sending the refrigerant flowing out of the condenser 7 directly into the ice-making evaporator 3 without passing through the throttling mechanism 9. The heat of the refrigerant is used to melt the ice layer on the surface of the ice-making evaporator 3, thereby releasing the ice from its adhesion to the ice-making evaporator 3.

[0098] In one embodiment, the step of determining whether the ice-making evaporator 3 has completed de-icing includes:

[0099] The first duration a0 of the de-icing pipeline 5 and the real-time ice-making temperature T0 of the ice-making module 11 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.

[0100] If a0≥a1 and / or T0≥T2, then the ice-making evaporator 3 is confirmed to have completed de-icing.

[0101] By combining the duration of de-icing with the real-time temperature of the ice-making module 11 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.

[0102] The first preset time a1 can be determined based on the size and heat exchange area of ​​the ice evaporator 3. 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 3 has completed the first preset time a1, the ice layer on its surface has melted, and the ice has detached from the ice evaporator 3. If the first duration a0 is less than the first preset time a1, even if the temperature of the ice-making module 11 is high, insufficient melting of the ice layer and the 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.

[0103] Similarly, the second preset temperature T2 is also determined based on the size of the ice-making evaporator 3, the heat exchange area, and the size of the ice-making module 11. The temperature inside the ice-making module 11 also affects the thickness of the ice layer on the ice-making evaporator 3 or the size of the ice cubes. Therefore, the temperature of the ice-making module 11 needs to be considered. When the real-time ice-making temperature T0 of the ice-making module 11 is greater than the second preset temperature T2, it indicates that the heat from the ice-making evaporator 3 has been transferred to the ice-making module 11 through the ice cubes, the ice layer on the surface of the ice-making evaporator 3 has been fully melted, and the ice cubes can be reliably removed. If the ice-making evaporator 3 is continuously de-iced, it is easy to cause the ice cubes inside the ice-making module 11 to melt, thus failing to meet the user's demand for ice cubes. The value range of the second preset temperature T2 is -10℃ to -1℃, preferably -5℃.

[0104] Preferably, when determining whether the ice evaporator 3 has completed de-icing, it is necessary to consider both the duration of the de-icing process of the ice evaporator 3 and the temperature inside the ice-making module 11. Only when a0≥a1 and T0≥T2 can it be determined that the ice evaporator 3 has completed de-icing, and this can also ensure that the ice provided by the refrigeration equipment can meet the user's needs and improve the user's experience.

[0105] Furthermore, after confirming that the ice-making evaporator 3 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 capacity. 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.

[0106] Alternatively, after confirming that the ice-making evaporator 3 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.

[0107] In one embodiment, the step of determining whether the refrigeration equipment has completed the ice-making process includes:

[0108] 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 11 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.

[0109] If b0≥b1 and / or T0≤T3, then the ice-making equipment has completed the ice-making process.

[0110] The second preset time b1 can be determined based on the size of the ice-making evaporator 3, its heat exchange area, and ice-making capacity parameters. 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-making evaporator 3 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-making evaporator 3 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 11 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.

[0111] Similarly, the third preset temperature T3 can be determined based on the size of the ice-making evaporator 3, the heat exchange area, and the ice-making operating conditions. The real-time temperature of the ice-making module 11 directly affects the freezing rate of the water and the quality of the ice blocks. If the temperature of the ice-making module 11 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 11 needs to be considered. When the real-time ice-making temperature T0 of the ice-making module 11 is less than or equal to the third preset temperature T3, it indicates that the low-temperature environment of the ice-making module 11 is stable and can ensure the continuous and stable freezing of the water on the surface of the ice-making evaporator 3. However, when the real-time ice-making temperature T0 of the ice-making module 11 is greater than the third preset temperature T3, the quality and thickness of the ice blocks on the ice-making evaporator 3 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.

[0112] 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 3 and the temperature inside the ice-making module 11. 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 judging the completion of ice making 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.

[0113] In one embodiment, the refrigeration equipment has a refrigeration mode, and when the refrigeration equipment is in the refrigeration mode, the refrigeration evaporator 4 can refrigerate the refrigeration compartment 12. For example... Figure 8 As shown, the ice-making control method further includes:

[0114] Control the refrigeration equipment to switch to refrigeration mode and turn on the refrigeration fan 2;

[0115] The real-time refrigeration temperature t0 of the cold storage compartment 12 is detected and compared with the fourth preset temperature t4;

[0116] If t0 ≥ t4, then shut down the refrigeration fan 2 and connect the de-icing pipe 5.

[0117] Because the ice-making evaporator 3 and the refrigerator evaporator 4 are connected in series, the low-temperature refrigerant flows synchronously through the ice-making evaporator 3 during the continuous cooling of the refrigerator compartment 12, keeping the ice-making evaporator 3 in a low-temperature heat exchange state. When the humid air inside the ice-making module 11 comes into contact with the low-temperature pipe wall of the ice-making evaporator 3, it is very easy for frost or even ice to condense on the surface of the ice-making evaporator 3. Over time, the frost and ice layer on the surface of the ice-making evaporator 3 will thicken, which will not only affect the subsequent ice-making efficiency and ice quality, but also cause abnormal heat exchange in the pipeline and increase the overall refrigeration energy consumption in severe cases. Therefore, after the refrigeration in the cold storage compartment 12 reaches the temperature threshold (i.e., the refrigeration stops), the de-icing pipe 5 is turned on, and the refrigerant with heat is used to heat up the ice evaporator 3 to defrost and melt the ice. This can effectively remove the frost and thin ice layer attached to the surface of the ice evaporator 3, restore the ice evaporator 3 to good heat exchange performance, effectively avoid the problem of refrigeration attenuation caused by frost and ice accumulation, ensure the stability and reliability of subsequent ice making by the ice evaporator 3, and improve the working stability and service life of the refrigeration equipment.

[0118] Furthermore, after the de-icing pipeline 5 is connected, the ice-making control method further includes:

[0119] Obtain the third duration h0 of the de-icing pipeline 5 being connected, and compare the third duration h0 with the third preset time period h1;

[0120] If h0 ≥ h1, then shut off the de-icing pipeline 5.

[0121] After the refrigeration of the cold storage compartment 12 is completed, the ice-making evaporator 3 undergoes a defrosting and ice-melting process. A third duration h0 is used as the criterion for determining the completion of defrosting. By detecting the conduction time of the de-icing pipe 5 (the third duration h0) and comparing it with a third preset time period h1, the removal status of the frost and thin ice layer on the surface of the ice-making evaporator 3 is accurately determined. When the third duration h0 is greater than or equal to the third preset time period h1, it can be determined that the frost or thin ice layer on the surface of the ice-making evaporator 3 has been fully melted and removed. This effectively avoids the ice-melting pipe 5 being open for a long time, causing high-temperature refrigerant to continuously enter the ice-making evaporator 3 and causing excessive temperature rise in the ice-making evaporator 3. This also avoids the problem of excessive temperature difference and a surge in refrigeration load during subsequent ice making, effectively ensuring orderly switching of the overall operating conditions and efficient and energy-saving operation. The value of the third preset time period h1 ranges from 5 seconds to 300 seconds, preferably 15 seconds.

[0122] Secondly, the present invention provides a refrigeration device that applies the above-described ice-making control method.

[0123] It is understandable that this refrigeration equipment possesses all the technical effects achievable by the aforementioned ice-making control method, which will not be elaborated upon here.

[0124] The refrigeration equipment also includes a refrigeration evaporator 101 and a refrigeration throttling structure 102. The outlet of the refrigeration evaporator 4 is connected to the inlet of the refrigeration evaporator 101. The outlet of the refrigeration evaporator 101 is connected to the return port of the compressor 6. The inlet of the refrigeration evaporator 101 is also connected to the outlet of the condenser 7 through the refrigeration throttling structure 102.

[0125] As one implementation method, such as Figure 3 As shown, the second end of the de-icing pipe 5 is connected to the outlet of the compressor 6, and the compressor 6 constitutes the heat source. At this time, the refrigeration equipment is connected to a two-inlet valve at the outlet of the condenser 7. The two-inlet valve has a first state in which the inlet is connected to the first outlet and disconnected from the second outlet, and a second state in which the inlet is connected to the second outlet and disconnected from the first outlet. The first outlet is connected to the ice-making evaporator 3 through the throttling mechanism 9, and the second outlet is connected to the freezing evaporator 101 through the freezing throttling mechanism 9.

[0126] When the inlet-outlet valve is switched to the first state, the refrigeration equipment can perform ice making and cold storage compartment cooling.

[0127] When the inlet-outlet valve switches to the second state, the refrigeration equipment can use the refrigeration evaporator 101 to refrigerate the freezer compartment.

[0128] As another implementation method, such as Figure 4 As shown, the condenser 7 constitutes the heat source, and the refrigeration equipment includes a three-inlet valve. The three-inlet valve has a first connected state in which the inlet is connected to the first outlet and disconnected from the second outlet and the third outlet; a second connected state in which the inlet is connected to the second outlet and disconnected from the first outlet and the third outlet; and a third connected state in which the inlet is connected to the third outlet and disconnected from the first outlet and the second outlet. The first outlet is connected to the ice-making evaporator 3 through the throttling mechanism 9, the second outlet is connected to the de-icing pipeline 5, and the third outlet is connected to the freezing evaporator 101 through the freezing throttling structure 102.

[0129] When the one-in-three-out valve is switched to the first connected state, the refrigeration equipment can perform ice making and cold storage compartment cooling.

[0130] When the inlet-outlet valve switches to the second connected state, the refrigeration equipment can de-ice the ice-making evaporator 3 through the de-icing pipe 5.

[0131] When the inlet-outlet valve switches to the third connected state, the refrigeration equipment can use the refrigeration evaporator 101 to refrigerate the freezer compartment.

[0132] 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 such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A method for controlling ice making in a refrigeration device, characterized in that: The refrigeration equipment includes a main body (1), a refrigeration fan (2), and an ice-making evaporator (3) and a refrigeration evaporator (4) connected in series. A refrigeration compartment (12) is provided inside the main body (1). An ice-making module is provided inside the refrigeration compartment. The ice-making evaporator (3) is located inside the ice-making module. The refrigeration evaporator (4) and the refrigeration fan (2) are both connected to the refrigeration compartment (12). The ice-making control method includes: Step S1: Control the refrigeration equipment to enter the ice-making mode and turn off the refrigeration fan (2). Step S2: Determine whether the cold storage room (12) needs refrigeration. If so, turn on the refrigeration fan (2). The refrigeration equipment also includes an ice removal pipeline (5), the first end of which is connected to the ice-making evaporator (3), and the second end is connected to a heat source. The heat source can send refrigerant into the ice removal pipeline (5) to heat the ice-making evaporator (3). The refrigeration equipment has a refrigeration mode. When the refrigeration equipment is in the refrigeration mode, the refrigeration evaporator (4) can refrigerate the refrigeration compartment (12). The ice-making control method further includes: Control the refrigeration equipment to switch to refrigeration mode and turn on the refrigeration fan (2); The real-time temperature t0 of the cold storage room (12) is detected and compared with the fourth preset temperature t4. If t0≤t4, then shut down the refrigeration fan (2) and connect the de-icing pipeline (5).

2. The ice-making control method according to claim 1, characterized in that: Step S2 further includes: Obtain the real-time refrigeration temperature t0 of the cold storage room (12) and compare the real-time refrigeration temperature t0 with the first preset temperature t1; If t0≥t1, then it is determined that the cold storage room (12) needs to be refrigerated and the cold storage fan (2) is turned on.

3. The ice-making control method according to claim 1, 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 refrigeration fan (2) off and de-ice the ice-making evaporator (3).

4. The ice-making control method according to claim 3, characterized in that: The step of de-icing the ice-making evaporator (3) further includes: Connect the de-icing pipeline (5) and determine whether the ice-making evaporator (3) has completed de-icing; If so, then shut off the de-icing pipeline (5).

5. The ice-making control method according to claim 4, characterized in that: The refrigeration equipment includes a compressor (6), and the second end of the de-icing pipeline (5) is connected to the outlet of the compressor (6). The compressor (6) constitutes the heat source.

6. The ice-making control method according to claim 4, characterized in that: The refrigeration equipment includes a condenser (7) and a first switching mechanism (8). The first switching mechanism (8) is provided with an inlet, a first outlet and a second outlet. The first switching mechanism (8) has a first state in which the inlet is connected to the first outlet and disconnected from the second outlet, and a second state in which the inlet is connected to the second outlet and disconnected from the first outlet. The condenser outlet of the condenser (7) is connected to the inlet. The first outlet is connected to the ice-making evaporator (3) through a throttling mechanism (9). The second end of the de-icing pipe (5) is connected to the second outlet. The condenser (7) constitutes the heat source. The step of connecting the de-icing pipeline (5) further includes: Control the first on / off mechanism (8) to switch to the second state.

7. The ice-making control method according to claim 4, characterized in that: The steps for determining whether the ice-making evaporator (3) has completed de-icing include: The first duration a0 of the de-icing pipeline (5) and the real-time ice-making temperature T0 of the ice-making module (11) 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. If a0≥a1 and / or T0≥T2, then the ice-making evaporator (3) is confirmed to have completed de-icing.

8. The ice-making control method according to claim 3, characterized in that: The steps for determining whether the refrigeration equipment has completed the ice-making process include: 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 (11) 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. If b0≥b1 and / or T0≤T3, then the ice-making equipment has completed the ice-making process.

9. The ice-making control method according to claim 1, characterized in that: After the de-icing pipeline (5) is connected, the ice-making control method further includes: Obtain the third duration h0 of the de-icing pipeline (5) being connected, and compare the third duration h0 with the third preset time period h1; If h0 ≥ h1, then shut off the de-icing pipeline (5).

10. The ice-making control method according to claim 3, 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.

11. A refrigeration device, characterized in that: The ice-making control method according to any one of claims 1 to 10 is applied.

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