Refrigerator and control method for pre-booking thawing

Abstract

The application provides a refrigerator and a control method for thawing reservation, which comprises a thawing area, a heating pipeline, a refrigeration pipeline and a circulation pipeline, the circulation pipeline is arranged in the thawing area; the heating pipeline, the refrigeration pipeline and the circulation pipeline are connected or disconnected through an adjusting component; when the heating pipeline and the circulation pipeline are connected, fluid is circulated in the circulation pipeline to increase the temperature in the thawing area; when the refrigeration pipeline and the circulation pipeline are connected, fluid is circulated in the circulation pipeline to decrease the temperature in the thawing area; a temperature detector is used for monitoring the temperature in the thawing area; a control module is signal-connected with the adjusting component and the temperature detector, and the control module controls the adjusting component according to the signal of the temperature detector. The refrigerator and the control method for thawing reservation solve the technical problem that the thawing chamber cannot realize the switching between the refrigeration mode and the thawing mode in the related art, and the food in the thawing chamber is prone to deterioration.

Description

Technical Field

[0001] This invention relates to the field of refrigeration equipment technology, specifically to a refrigerator and a control method for scheduled defrosting. Background Technology

[0002] Nowadays, refrigerators have become an indispensable household appliance. When users take food out of the freezer, it is frozen and hard, making it impossible to cut or cook immediately. It needs to be left to thaw gradually before it can be used. Because users cannot cut and cook it quickly and need to wait a long time to thaw, this cannot meet the needs of people with fast-paced lifestyles who require quick access to frozen food.

[0003] To address the aforementioned issues, existing technology has developed refrigerators with a defrosting compartment. Heat is introduced into this compartment to thaw frozen food, preventing contamination from microorganisms and bacteria during thawing in the air. However, the defrosting compartment remains at a high temperature, and if food is not removed promptly after thawing, it may spoil.

[0004] Therefore, existing technologies need further development. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a refrigerator and a control method for scheduled defrosting, so as to solve the technical problem in the related art that the defrosting chamber cannot switch between refrigeration and defrosting modes and that food in the defrosting chamber is prone to spoilage.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solution: A refrigerator is provided, including a defrosting zone. The refrigerator further includes: a heating pipe for introducing fluid; a cooling pipe for introducing fluid; a circulation pipe disposed within the defrosting zone; an adjusting component connected to the heating pipe, cooling pipe, and circulation pipe respectively, controlling the connection or disconnection of the heating pipe and circulation pipe, and adjusting the connection or disconnection of the cooling pipe and circulation pipe; when the heating pipe and circulation pipe are connected, fluid flows into the circulation pipe to raise the temperature within the defrosting zone; when the cooling pipe and circulation pipe are connected, fluid flows into the circulation pipe to lower the temperature within the defrosting zone; a temperature detector disposed within the defrosting zone, used to monitor the temperature within the defrosting zone; and a control module connected to the adjusting component and the temperature detector respectively, controlling the adjusting component according to the signal from the temperature detector.

[0007] Furthermore, the refrigeration piping includes: a first piping, one end of which is connected to an adjusting component, and the other end of which is connected to a capillary tube of the refrigerator, the capillary tube being used to depressurize the fluid from the first piping so as to cool the fluid; and a second piping, one end of which is connected to the end of the capillary tube away from the first piping, and the other end of which is connected to the adjusting component.

[0008] Furthermore, the heating and cooling pipelines are connected or disconnected via an adjusting component; when the heating and cooling pipelines are connected, the fluid flowing out of the heating pipeline is depressurized through a capillary tube, resulting in a decrease in temperature.

[0009] Furthermore, one end of the second pipeline connected to the capillary tube is also connected to an evaporator, and the other end of the evaporator is connected to the compressor.

[0010] Furthermore, one end of the heating pipe is connected to an adjustment component, and the other end of the heating pipe is connected to the refrigerator's compressor.

[0011] Furthermore, the flow pipeline includes: an inlet end, a third pipe section, a fourth pipe section, and an outlet end, which are connected in sequence. The inlet end and the outlet end are respectively connected to the regulating component.

[0012] Furthermore, a first connecting pipe is provided between the third pipe segment and the fourth pipe segment. The first connecting pipe connects the third pipe segment and the fourth pipe segment respectively. A first regulating valve is provided on the first connecting pipe. The first regulating valve is connected to the control module signal. The first regulating valve opens or closes the first connecting pipe according to the signal transmitted by the control module.

[0013] Furthermore, a second connecting pipe is provided between the third and fourth pipe sections, connecting both the third and fourth pipe sections. The second connecting pipe and the first connecting pipe are spaced apart, and a second regulating valve is provided on the second connecting pipe. A third regulating valve is provided on the third pipe section, located below the first connecting pipe. A fourth regulating valve is also provided on the third pipe section, located below the second connecting pipe. The second, third, and fourth regulating valves are all connected to the control module via signals, and they connect or close their respective pipes according to the signals transmitted by the control module.

[0014] Furthermore, the refrigerator is also equipped with a fifth pipe. One end of the fifth pipe is connected to an adjustment component, and the other end of the fifth pipe is connected to the compressor. The fluid in the flow pipe is passed into the fifth pipe through the adjustment component so that it can enter the compressor.

[0015] Furthermore, the refrigerator also includes a refrigerator compartment, a freezer compartment, and a variable temperature compartment. The freezer compartment is located below the refrigerator compartment, and the variable temperature compartment and the defrost compartment are both located below the freezer compartment. The variable temperature compartment is equipped with a heating element to regulate the temperature within the variable temperature compartment.

[0016] Furthermore, the adjustment components are located on the refrigerator side panel corresponding to the freezer compartment, the evaporator is located in the freezer compartment area, and the compressor is located in the variable temperature compartment area.

[0017] Furthermore, the condenser pipes of the refrigerator extend along the outer edge of the refrigerator, forming heating pipes and circulation pipes.

[0018] A scheduled defrosting control method, including the refrigerator described above, includes: an adjusting component connecting a heating pipe and a circulation pipe to introduce fluid into the defrosting zone to increase the temperature in the defrosting zone; detecting the temperature t in the defrosting zone and comparing t with a predetermined value t1 of a temperature detector; when t is less than or equal to t1, the adjusting component remains unchanged; when t is greater than t1, the adjusting component introduces fluid from the heating pipe into the cooling pipe for cooling, and then connects the cooling pipe to the circulation pipe.

[0019] Beneficial effects:

[0020] 1. The refrigerator using the present invention, by setting an adjustment component, realizes the switching between refrigeration and defrosting modes, effectively preventing the risk of food spoilage if not taken out in time.

[0021] 2. With the refrigerator of the present invention, users can defrost food in the defrosting chamber according to their own set defrosting time, achieving rapid defrosting and saving users time.

[0022] 3. The refrigerator using the present invention enters the defrosting chamber through a condenser pipe and uses the waste heat emitted by the refrigerator to heat the defrosting chamber, thereby maximizing the utilization of heat energy.

[0023] 4. The present invention adopts a scheduled defrosting control method, in which a temperature detector monitors the temperature of the defrosting chamber in real time, switches between refrigeration and defrosting modes, and controls the utilization rate of residual heat by setting the scheduled defrosting time, thereby realizing the scheduled defrosting function. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the internal structure of the refrigerator used in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of the defrosting zone of the refrigerator used in an embodiment of the present invention;

[0026] Figure 3 yes Figure 2 A magnified view of part A in the middle;

[0027] Figure 4 This is a schematic diagram of the overall structure of the refrigerator used in an embodiment of the present invention;

[0028] Figure 5This is a schematic diagram of the side panel of the refrigerator used in an embodiment of the present invention;

[0029] Figure 6 This is a flowchart of the control method for scheduled thawing used in an embodiment of the present invention.

[0030] The above figures include the following reference numerals:

[0031] 1. Thawing zone; 2. Heating pipe; 3. Refrigeration pipe; 31. First pipe; 32. Capillary tube; 33. Second pipe; 4. Flow pipe; 41. Inlet end; 42. Third pipe section; 43. Fourth pipe section; 44. Outlet end; 5. Adjustment component; 6. Temperature sensor; 7. Compressor; 8. Evaporator; 9. Fifth pipe; 10. Refrigeration zone; 11. Freezing zone; 12. Variable temperature zone; 13. Heating element; 14. Side plate; 16. First connecting pipe; 17. First regulating valve; 18. Second connecting pipe; 19. Second regulating valve; 20. Third regulating valve; 21. Fourth regulating valve; 22. Fan. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0033] According to an embodiment of the present invention, a refrigerator is provided; please refer to [link / reference]. Figures 1 to 6 The system includes a defrosting zone 1; a heating pipe 2 for introducing fluid; a cooling pipe 3 for introducing fluid; a flow pipe 4 located within the defrosting zone 1; an adjusting component 5 connected to the heating pipe 2, cooling pipe 3, and flow pipe 4, controlling the connection or disconnection of the heating pipe 2 and flow pipe 4, and controlling the connection or disconnection of the cooling pipe 3 and flow pipe 4; when the heating pipe 2 and flow pipe 4 are connected, fluid flows into the flow pipe 4 to raise the temperature within the defrosting zone 1; when the cooling pipe 3 and flow pipe 4 are connected, fluid flows into the flow pipe 4 to lower the temperature within the defrosting zone 1; a temperature detector 6 located within the defrosting zone 1 for monitoring the temperature within the defrosting zone 1; and a control module connected to the adjusting component 5 and the temperature detector 6, controlling the adjusting component 5 based on the signal from the temperature detector 6.

[0034] In this refrigerator embodiment, the heating pipe 2 and the circulation pipe 4 are connected or disconnected by the adjusting component 5, as are the cooling pipe 3 and the circulation pipe 4. High-temperature fluid flows out of the heating pipe 2. When the heating pipe 2 and the circulation pipe 4 are connected, the high-temperature fluid enters the circulation pipe 4, raising the temperature in the defrosting zone 1, thus achieving the defrosting mode. Low-temperature fluid flows out of the cooling pipe 3. When the cooling pipe 3 and the circulation pipe 4 are connected, the low-temperature fluid enters the circulation pipe 4, lowering the temperature in the defrosting zone 1, thus achieving the refrigeration mode. A temperature sensor 6 is installed in the defrosting zone 1 to monitor the temperature in real time. The refrigerator also has a control module, which is signal-connected to the adjusting component 5 and the temperature sensor 6. The control module receives signals from the temperature sensor 6. Before the defrosting mode is activated, the defrosting zone 1 operates in the refrigerator's refrigeration mode. When a customer selects the defrost mode on the control module's app, the control module transmits a signal to the regulating component 5. The regulating component 5 connects the heating pipe 2 and the circulation pipe 4, allowing high-temperature fluid to enter the circulation pipe 4 and defrost the defrost zone 1. When the temperature t in the defrost zone 1 exceeds the predetermined value t1 of the temperature detector 6, the regulating component 5 disconnects the heating pipe 2 and the circulation pipe 4, and connects the cooling pipe 3 and the circulation pipe 4, lowering the temperature in the defrost zone 1. This achieves automatic switching between defrost and refrigeration modes, effectively preventing food spoilage due to users not removing defrosted food in time. The refrigerator in this embodiment solves the technical problem in related technologies where the defrost compartment cannot switch between refrigeration and defrost modes, and food in the defrost compartment is prone to spoilage.

[0035] Specifically, the regulating component 5 is a reversing valve, which changes the connection between the valve ports by changing the relative position of the valve core and the fluid, thereby opening and closing the fluid passage, controlling the direction of fluid flow, and is sensitive to operation and low in cost.

[0036] See Figure 1 and Figure 2 In the refrigerator of this embodiment, the refrigeration pipeline 3 includes: a first pipeline 31, one end of which is connected to the regulating component 5, and the other end of which is connected to the capillary tube 32 of the refrigerator. The capillary tube 32 is used to depressurize the fluid from the first pipeline 31 to cool the fluid; and a second pipeline 33, one end of which is connected to the end of the capillary tube 32 away from the first pipeline 31, and the other end of which is connected to the regulating component 5. The first pipeline 31 and the regulating component 5 are connected, and the other end is connected to the capillary tube 32. The other end of the capillary tube 32 is connected to the second pipeline 33. The second pipeline 33 and the regulating component 5 are connected in sequence to form a reflux, so that the regulating component 5 can change the flow direction of the fluid and cause the control module to switch modes.

[0037] See Figure 1 and Figure 2In this refrigerator embodiment, the heating pipe 2 and the cooling pipe 3 are connected or disconnected via an adjusting component 5. When the heating pipe 2 and the cooling pipe 3 are connected, the high-temperature fluid flowing out of the heating pipe 2 is depressurized by the capillary tube 32, resulting in a lower temperature. The adjusting component 5 controls the connection or disconnection of the heating pipe 2 and the cooling pipe 3. When the heating pipe 2 and the cooling pipe 3 are connected, the high-temperature fluid changes its flow direction after passing through the adjusting component 5, enters the capillary tube 32 through the first pipe 31, and forms a low-temperature fluid through the depressurization and cooling treatment of the capillary tube 32. Then, it flows through the adjusting component 5 through the second pipe 33, and the low-temperature fluid changes its flow direction again after passing through the adjusting component 5 before entering the circulation pipe 4, thereby activating the defrosting zone 1 in refrigeration mode. The refrigeration pipe 3 refrigeration return design can make full use of the high-temperature fluid. When there is not enough low-temperature fluid, the high-temperature fluid is depressurized through the refrigeration pipe 3 to form a low-temperature fluid, ensuring that the refrigerator can smoothly switch from defrosting mode to refrigeration mode and guaranteeing the normal operation of the refrigerator.

[0038] See Figure 1 and Figure 2 In the refrigerator of this embodiment, one end of the second pipe 33 connected to the capillary tube 32 is also connected to the evaporator 8, and the other end of the evaporator 8 is connected to the compressor 7. In the defrost mode, the fluid flowing out of the flow pipe 4 in the defrost zone 1 enters the evaporator 8 through the second pipe 33, vaporizes and cools in the evaporator 8, and flows into the compressor 7 to provide an energy source for the compressor 7 so that the compressor 7 can compress the refrigerant to refrigerate and freeze the refrigerator.

[0039] See Figure 1 and Figure 2 In the refrigerator of this embodiment, one end of the heating pipe 2 is connected to the regulating component 5, and the other end of the heating pipe 2 is connected to the refrigerator compressor 7. The heating pipe 2 is connected to the compressor 7, allowing the high-temperature gaseous fluid generated during the compressor 7's operation to flow into the heating pipe 2. The heating pipe 2 is then connected to the flow pipe 4 to activate the defrosting zone 1 in defrosting mode. Alternatively, the heating pipe 2 can be connected to the cooling pipe 3, allowing the fluid inside the pipe to be depressurized and cooled before flowing into the flow pipe 4 to activate the refrigeration zone 1 in refrigeration mode. The defrosting mode maximizes the utilization of the heat generated by the compressor 7, making full use of residual heat.

[0040] See Figure 2 and Figure 3In the refrigerator of this embodiment, both ends of the flow pipe 4 are connected to the regulating component 5. The flow pipe 4 includes an inlet end 41, a third pipe section 42, a fourth pipe section 43, and an outlet end 44, which are connected sequentially. The inlet end 41 and the outlet end 44 are respectively connected to the regulating component 5. The two ends of the flow pipe 4 are connected to the regulating component 5. The inlet end 41, the third pipe section 42, the fourth pipe section 43, and the outlet end 44 form a backflow through the regulating component 5, so that the fluid flowing into the flow pipe 4 enters the defrosting zone 1 from the inlet end 41 and then exits from the outlet end 44, changing the temperature in the defrosting zone 1 by circulating and carrying heat.

[0041] Specifically, the third pipe section 42 and the fourth pipe section 43 are respectively bent and coiled in the region of the thawing zone 1 to increase the amount of fluid entering, thereby increasing the heating rate.

[0042] See Figure 2 and Figure 3 In the refrigerator of this embodiment, a first connecting pipe 16 is provided between the third pipe segment 42 and the fourth pipe segment 43. The first connecting pipe 16 connects the third pipe segment 42 and the fourth pipe segment 43 respectively. A first regulating valve 17 is provided on the first connecting pipe 16. The first regulating valve 17 is signal-connected to the control module. The first regulating valve 17 opens or closes the first connecting pipe 16 according to the signal transmitted by the control module. The third pipe segment 42 and the fourth pipe segment 43 form a complete pipeline and are interconnected. The first connecting pipe 16 between the third pipe segment 42 and the fourth pipe segment 43 effectively increases the heating or cooling area of ​​the defrosting zone 1, promoting the heating or cooling speed. The first regulating valve 17 is provided on the first connecting pipe 16. When the control module controls the first regulating valve 17 to open the first connecting pipe 16, the third pipe segment 42 is connected to the fourth pipe segment 43 through the first connecting pipe 16, expanding the heating channel for the defrosting zone 1 and accelerating the heating of the defrosting zone 1.

[0043] See Figure 2 and Figure 3 In the refrigerator of this embodiment, a second connecting pipe 18 is provided between the third pipe section 42 and the fourth pipe section 43. The second connecting pipe 18 connects the third pipe section 42 and the fourth pipe section 43 respectively. The second connecting pipe 18 and the first connecting pipe 16 are arranged alternately. A second regulating valve 19 is provided on the second connecting pipe 18. A third regulating valve 20 is provided on the third pipe section 42. The third regulating valve 20 is located below the first connecting pipe 16. A fourth regulating valve 21 is also provided on the third pipe section 42. The fourth regulating valve 21 is located below the second connecting pipe 18. The second regulating valve 19, the third regulating valve 20 and the fourth regulating valve 21 are all signal connected to the control module. The second regulating valve 19, the third regulating valve 20 and the fourth regulating valve 21 connect or close the corresponding pipes according to the signals transmitted by the control module.

[0044] A second connecting pipe 18 is added between the third pipe section 42 and the fourth pipe section 43, and a second regulating valve 19 is installed on the second connecting pipe 18. When the control module controls the second regulating valve 19 to open the second connecting pipe 18, the third pipe section 42 is connected to the fourth pipe section 43 through the second connecting pipe 18, thereby expanding the heat exchange area of ​​the thawing zone 1 and promoting the thawing speed.

[0045] See Figure 2 and Figure 3 A third regulating valve 20 is installed on the third pipe section 42, located below the first connecting pipe 16 (the fluid flows from the third pipe section 42 to the fourth pipe section 43, and the third regulating valve 20 is positioned downstream of the fluid flow path at the connection between the third pipe section 42 and the first connecting pipe 16). A fourth regulating valve 21 is also installed on the third pipe section 42, located below the second connecting pipe 18 (the fourth regulating valve 21 is positioned downstream of the fluid flow path at the connection between the third pipe section 42 and the second connecting pipe 18). The control module controls the opening and closing of the second regulating valve 19, the third regulating valve 20, and the fourth regulating valve 21. By adjusting the positions of each regulating valve, the module can reasonably open or close each valve, changing the fluid path length and increasing or decreasing the heat exchange area within the thawing zone 1, thereby controlling the thawing time.

[0046] See Figure 1 In this embodiment of the refrigerator, a fifth pipe 9 is also provided. One end of the fifth pipe 9 is connected to an adjusting component 5, and the other end of the fifth pipe 9 is connected to a compressor 7. The fluid in the flow pipe 4 is passed into the fifth pipe 9 through the adjusting component 5 so that it enters the compressor 7. The heat generated by the operation of the compressor 7 is passed into the heating pipe 2, flows into the flow pipe 4 through the adjusting component 5, and enters the defrosting zone 1. After heat exchange in the defrosting zone 1, it flows out from the outlet end 44, passes through the adjusting component 5, and flows into the fifth pipe 9. The fifth pipe 9 is connected to the compressor 7, and finally enters the compressor 7 for compression and reuse, realizing cyclic refrigeration.

[0047] See Figure 4 In this embodiment, the refrigerator further includes a refrigerator compartment 10, a freezer compartment 11, and a variable-temperature compartment 12. The freezer compartment 11 is located below the refrigerator compartment 10, and the variable-temperature compartment 12 and the defrost compartment 1 are both located below the freezer compartment 11. The variable-temperature compartment 12 is equipped with a heating element 13, which regulates the temperature within the variable-temperature compartment 12. The refrigerator compartment 10 is located at the top of the refrigerator, the freezer compartment 11 is located below the refrigerator compartment 10, and the variable-temperature compartment 12 and the defrost compartment 1 are arranged side by side at the bottom. The variable-temperature compartment 12 is equipped with a heating element 13, which regulates the temperature within the variable-temperature compartment 12, thereby diversifying the refrigerator's functions and enhancing the product's competitiveness.

[0048] See Figure 1 , Figure 4 and Figure 5In this refrigerator embodiment, the adjustment component 5 is located on the refrigerator side panel 14 corresponding to the freezer compartment 11, the evaporator 8 is located in the freezer compartment 11, and the compressor 7 is located in the variable temperature compartment 12. In daily life, the refrigerator compartment 10 is used the most and needs to hold the most food, followed by the freezer compartment 11, while the least amount of food needs to be soft-frozen or thawed. Therefore, to provide sufficient space for the refrigerator compartment 10, the evaporator 8 is located in the freezer compartment 11, the adjustment component 5 is located on the refrigerator side panel 14 corresponding to the freezer compartment 11, and the compressor 7 is located in the variable temperature compartment 12. This makes reasonable use of the refrigerator's storage space, fully meets customer needs, and improves customer satisfaction.

[0049] Specifically, a fan 22 is installed above the evaporator 8 to promote air circulation inside the refrigerator, which is more conducive to heat exchange.

[0050] See Figure 1 In the refrigerator of this embodiment, the condenser pipes extend along the outer side of the refrigerator, forming a heating pipe 2 and a circulation pipe 4. In order to make full use of the waste heat, the outer side of the refrigerator is arranged with condenser pipes. Some heat is released to the outside through the condenser pipes, and the excess heat is used for heat exchange in the defrosting zone 1 inside the refrigerator.

[0051] See Figure 6 In the scheduled defrosting control method of this embodiment, including the refrigerator as described above, the scheduled defrosting control method includes: adjusting component 5 connecting heating pipe 2 and circulation pipe 4, introducing high-temperature fluid into defrosting zone 1 to increase the temperature in defrosting zone 1; detecting the temperature t in defrosting zone 1, and comparing t with the predetermined value t1 of temperature detector 6; when t is less than or equal to t1, adjusting component 5 remains unchanged; when t is greater than t1, adjusting component 5 introduces the high-temperature fluid from heating pipe 2 into cooling pipe 3 for cooling treatment, and then connects cooling pipe 3 to circulation pipe 4.

[0052] In this embodiment, the operation steps of the pre-set thawing control method are as follows:

[0053] See Figure 6 After the unit is turned on, the user can select either "Refrigeration and Freshness Preservation Mode" or "Defrosting Mode" according to their needs. When the user selects "Refrigeration and Freshness Preservation Mode," all four regulating valves—first regulating valve 17, third regulating valve 20, second regulating valve 19, and fourth regulating valve 21—are opened. The reversing valve automatically switches to the corresponding pipeline channel. The refrigerant flow path is: heating pipeline 2—reversing valve—first pipeline 31—capillary tube 32—second pipeline 33—reversing valve—inflow end 41—third pipeline section 42—fourth pipeline section 43—outflow end 44—reversing valve—fifth pipeline 9—compressor 7. At this time, defrosting zone 1 achieves refrigeration and freshness preservation function and can be temporarily used as a refrigerator compartment.

[0054] See Figure 6 The system sets scheduled defrosting times T1, T2, and T3, where T1 < T2 < T3. After the user selects "Defrosting Mode" and chooses the defrosting time T, the system automatically matches the opening status of the first regulating valve 17, the third regulating valve 20, the second regulating valve 19, and the fourth regulating valve 21 according to the defrosting time T set by the customer.

[0055] When the control module logic determines that T≤T1, it means that rapid thawing is required. The first regulating valve 17, the third regulating valve 20, the second regulating valve 19, and the fourth regulating valve 21 are all opened, and the heat exchange area in the thawing zone 1 reaches its maximum.

[0056] When the control module logic determines that T1 < T ≤ T2, the first regulating valve 17 opens, the third regulating valve 20 opens, the second regulating valve 19 opens, and the fourth regulating valve 21 closes.

[0057] When the control module logic determines that T > T2, it indicates that slow thawing is required. The first regulating valve 17 is opened, the third regulating valve 20 is closed, the second regulating valve 19 is closed, and the fourth regulating valve 21 is closed, so the heat exchange area in the thawing zone 1 is at its minimum.

[0058] At this time, in the "defrosting mode", the reversing valve automatically switches the corresponding pipeline channel. The refrigerant flow path is: heating pipeline 2—reversing valve—inflow end 41—third pipe section 42—fourth pipe section 43—outflow end 44—reversing valve—second pipeline 33—evaporator 8—compressor 7. The defrosting zone 1 heats up uniformly to defrost frozen food. During the defrosting process, the temperature detector 6 monitors the temperature of the defrosting zone 1 in real time. When the temperature of the defrosting zone 1 is greater than 0℃, the system determines that defrosting is complete. At this time, the system automatically switches to the "refrigeration and preservation mode". The first regulating valve 17, the third regulating valve 20, the second regulating valve 19, and the fourth regulating valve 21 are all opened. The reversing valve automatically switches the corresponding pipeline channel. The refrigerant flow path is: heating pipeline 2—reversing valve—first pipeline 31—capillary tube 32—second pipeline 33—reversing valve—inflow end 41—third pipe section 42—fourth pipe section 43—outflow end 44—reversing valve—fifth pipeline 9—compressor 7. Running the above steps can prevent food from spoiling due to prolonged thawing.

[0059] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0060] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0061] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0062] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0063] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A refrigerator, comprising a defrosting zone (1), characterized in that, The refrigerator also includes: Heating pipe (2) is used to introduce fluid; Refrigeration piping (3) is used to introduce fluid; A circulation pipeline (4) is provided within the thawing zone (1); Adjustment component (5), the adjustment component (5) is connected to the heating pipe (2), the cooling pipe (3) and the flow pipe (4) respectively, and the adjustment component (5) controls the connection or disconnection of the heating pipe (2) and the flow pipe (4), and controls the connection or disconnection of the cooling pipe (3) and the flow pipe (4); When the heating pipe (2) and the flow pipe (4) are connected, the fluid is introduced into the flow pipe (4) to raise the temperature in the defrosting zone (1); when the cooling pipe (3) and the flow pipe (4) are connected, the fluid is introduced into the flow pipe (4) to lower the temperature in the defrosting zone (1). Temperature detector (6) is disposed in the thawing zone (1) and is used to monitor the temperature in the thawing zone (1); The control module is connected to the adjustment component (5) and the temperature detector (6) respectively. The control module controls the adjustment component (5) according to the signal of the temperature detector (6). The refrigeration piping (3) includes: A first pipe (31) is connected at one end to the regulating component (5) and at the other end to the capillary tube (32) of the refrigerator. The capillary tube (32) is used to depressurize the fluid from the first pipe (31) so as to cool the fluid. The second pipe (33) has one end connected to the end of the capillary (32) away from the first pipe (31), and the other end of the second pipe (33) is connected to the adjusting component (5). The heating pipe (2) and the cooling pipe (3) are connected or disconnected through the adjusting component (5); when the heating pipe (2) and the cooling pipe (3) are connected, the fluid flowing out of the heating pipe (2) is depressurized by the capillary tube (32) and the temperature decreases.

2. The refrigerator according to claim 1, characterized in that, The second pipeline (33) is connected to an evaporator (8) at one end of the capillary tube (32), and the other end of the evaporator (8) is connected to the compressor (7).

3. The refrigerator according to claim 2, characterized in that, One end of the heating pipe (2) is connected to the regulating component (5), and the other end of the heating pipe (2) is connected to the compressor (7).

4. The refrigerator according to claim 3, characterized in that, The two ends of the flow pipe (4) are respectively connected to the regulating component (5); the flow pipe (4) includes: an inlet end (41), a third pipe section (42), a fourth pipe section (43) and an outlet end (44), the inlet end (41), the third pipe section (42), the fourth pipe section (43) and the outlet end (44) are connected in sequence, and the inlet end (41) and the outlet end (44) are respectively connected to the regulating component (5).

5. The refrigerator according to claim 4, characterized in that, A first connecting pipe (16) is provided between the third pipe section (42) and the fourth pipe section (43). The first connecting pipe (16) connects the third pipe section (42) and the fourth pipe section (43) respectively. A first regulating valve (17) is provided on the first connecting pipe (16). The first regulating valve (17) is signal-connected to the control module. The first regulating valve (17) connects or closes the first connecting pipe (16) according to the signal transmitted by the control module.

6. The refrigerator according to claim 5, characterized in that, A second connecting pipe (18) is also provided between the third pipe section (42) and the fourth pipe section (43). The second connecting pipe (18) connects the third pipe section (42) and the fourth pipe section (43) respectively. The second connecting pipe (18) and the first connecting pipe (16) are arranged alternately. A second regulating valve (19) is provided on the second connecting pipe (18). A third regulating valve (20) is provided on the third pipe section (42). The third regulating valve (20) is located below the first connecting pipe (16). A fourth regulating valve (21) is also provided on the third pipe section (42). The fourth regulating valve (21) is located below the second connecting pipe (18). The second regulating valve (19), the third regulating valve (20) and the fourth regulating valve (21) are all connected to the control module. The second regulating valve (19), the third regulating valve (20) and the fourth regulating valve (21) connect or close the corresponding pipelines according to the signal transmitted by the control module.

7. The refrigerator according to claim 6, characterized in that, The refrigerator is also provided with a fifth pipe (9), one end of which is connected to the adjustment component (5), and the other end of which is connected to the compressor (7). The fluid in the flow pipe (4) is passed into the fifth pipe (9) through the adjustment component (5) to enter the compressor (7).

8. The refrigerator according to claim 7, characterized in that, The refrigerator also includes a refrigeration zone (10), a freezing zone (11) and a variable temperature zone (12). The freezing zone (11) is located below the refrigeration zone (10). The variable temperature zone (12) and the defrosting zone (1) are both located below the freezing zone (11). The variable temperature zone (12) is provided with a heating element (13) to regulate the temperature in the variable temperature zone (12).

9. The refrigerator according to claim 8, characterized in that, The adjustment component (5) is located on the refrigerator side panel (14) corresponding to the freezing zone (11), the evaporator (8) is located in the area of ​​the freezing zone (11), and the compressor (7) is located in the area of ​​the variable temperature zone (12).

10. The refrigerator according to claim 1, characterized in that, The condenser pipe of the refrigerator extends along the outer edge of the refrigerator to form the heating pipe (2) and the flow pipe (4).

11. A pre-set defrosting control method, applied to a refrigerator as described in any one of claims 1-10, characterized in that, The scheduled thawing control method includes: The regulating component (5) connects the heating pipe (2) and the flow pipe (4) to introduce fluid into the defrosting zone (1) to increase the temperature in the defrosting zone (1); The temperature t in the thawing zone (1) is detected and compared with the predetermined value t1 of the temperature detector (6); When t is less than or equal to t1, the adjusting component (5) remains unchanged; When t is greater than t1, the regulating component (5) introduces the fluid from the heating pipe (2) into the cooling pipe (3) for cooling treatment, and then connects the cooling pipe (3) to the flow pipe (4).

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