refrigerator

Abstract

This application provides a refrigerator. The refrigerator includes a housing provided with at least one magnetic field preservation chamber, a magnetic field generating device for generating a magnetic field within the storage space of the magnetic field preservation chamber, and a cooling system for cooling the magnetic field preservation chamber. The magnetic field generating device is configured to set the magnetic field strength inside the storage space in the range of 10 gauss to 100 gauss, and the cooling system is configured to set the temperature inside the storage space in the range of -10°C to 0°C, or the magnetic field generating device is configured to set the magnetic field strength inside the storage space in the range of 5 gauss to 40 gauss, and the cooling system is configured to set the temperature inside the storage space in the range of -30°C to -15°C. This makes it possible to refrigerate food at sub-zero temperatures, or to reduce the formation of large ice crystals inside when freezing food, thereby improving preservation effectiveness.

Description

Technical Field

[0001] Priority Claim This application claims the priority of Chinese Patent Application No. CN202310409258.6 filed on April 17, 2023, and incorporates the entire content of the Chinese patent application by reference into this application. This application relates to the field of refrigeration and freezing technology, and particularly to refrigerators.

Background Art

[0002] As a common household electrical appliance, a refrigerator can preserve food at a low temperature and extend the storage period of food. With the improvement of people's living standards, there is an increasing concern about the storage period and freshness retention effect of refrigerators. Specifically, in the refrigeration of food ingredients, since it is necessary to keep the temperature above zero degrees, it is difficult to further extend the storage period. In the freezing of food ingredients, solving the problem of the deterioration of the texture of frozen meat ingredients has become an issue. This is mainly because in the process of frozen storage of meat ingredients, the internal moisture freezes, sharp and large ice crystals are generated, and these large ice crystals destroy the cells of the meat ingredients. When the meat is thawed, the juice flows out from the damaged cells, nutrients are lost, and the texture deteriorates.

[0003] The related technologies mentioned in the specification do not confirm or imply that the related technologies constitute a part of common knowledge in any jurisdiction, nor are they understood by those skilled in the art, considered relevant, and / or suggested that they can be reasonably expected to be combined with other related technologies.

Summary of the Invention

[0004] One object of this application is to provide a refrigerator that can solve any of the above problems.

[0005] In particular, this application a housing, at least one magnetic field freshness preservation chamber provided in the housing, A magnetic field generating device for generating a magnetic field within the storage space of the aforementioned magnetic field preservation room, The system includes a cooling system for cooling the magnetic field preservation chamber, The magnetic field generator is configured to maintain a magnetic field strength within the storage space in the range of 10 gauss to 100 gauss, and the cooling system is configured to maintain a temperature within the storage space in the range of -10°C to 0°C, or The present invention provides a refrigerator configured such that the magnetic field generator sets the magnetic field strength inside the storage space to a range of 5 gauss to 40 gauss, and the cooling system sets the temperature inside the storage space to a range of -30°C to -15°C.

[0006] Selectively, the magnetic field generator is configured to set the magnetic field strength inside the storage space to a range of 30 gauss to 60 gauss, and the cooling system is configured to set the temperature inside the storage space to a range of -10°C to 0°C.

[0007] Selectively, the magnetic field generator is configured to maintain a magnetic field strength within the storage space in the range of 10 gauss to 20 gauss, and the cooling system is configured to maintain a temperature within the storage space in the range of -30°C to -15°C.

[0008] Selectively, the cooling system includes an evaporator and a blower, and the magnetic preservation chamber is provided with an air intake and an air return port for preservation (freshness maintenance), and the air generated by the blower enters the magnetic preservation chamber through the air intake and flows out of the magnetic preservation chamber through the air return port, thereby cooling the magnetic preservation chamber.

[0009] Selectively, the enclosure is provided with a refrigerator compartment and a refrigerated cooling compartment, and the cooling system is provided in the refrigerated cooling compartment and cools the refrigerator compartment. The magnetic field preservation chamber is provided in the refrigerator chamber, the air intake and return air intake of the magnetic field preservation chamber are in communication with the refrigerator cooling chamber, and the cooling system provided in the refrigerator cooling chamber is capable of cooling the magnetic field preservation chamber. The magnetic field generator is configured to maintain a magnetic field strength within the storage space in the range of 10 gauss to 100 gauss, and the cooling system is configured to maintain a temperature within the storage space in the range of -10°C to 0°C.

[0010] Selectively, the housing is provided with a variable temperature chamber and a variable temperature cooling chamber, and the cooling system is provided in the variable temperature cooling chamber and cools the variable temperature chamber. The magnetic field preservation chamber is provided in the temperature variable chamber, the air intake and return air outlet of the magnetic field preservation chamber are in communication with the temperature variable cooling chamber, and the cooling system provided in the temperature variable cooling chamber is capable of cooling the magnetic field preservation chamber. The magnetic field generator is configured to maintain a magnetic field strength within the storage space in the range of 10 gauss to 100 gauss, and the cooling system is configured to maintain a temperature within the storage space in the range of -10°C to 0°C, or The magnetic field generator is configured to maintain a magnetic field strength within the storage space in the range of 5 gauss to 40 gauss, and the cooling system is configured to maintain a temperature within the storage space in the range of -30°C to -15°C.

[0011] Selectively, the enclosure is provided with a freezer chamber and a refrigeration chamber, and the cooling system is provided in the refrigeration chamber to cool the freezer chamber. The magnetic field preservation chamber is provided in the freezer chamber, the air intake and return air intake of the magnetic field preservation chamber are in communication with the freezer / cooling chamber, and the cooling system provided in the freezer / cooling chamber is capable of cooling the magnetic field preservation chamber. The magnetic field generator is configured to maintain a magnetic field strength within the storage space in the range of 5 gauss to 40 gauss, and the cooling system is configured to maintain a temperature within the storage space in the range of -30°C to -15°C.

[0012] Selectively, the enclosure may be provided with a refrigerator compartment, a freezer compartment, a refrigerated cooling compartment, and a freezer cooling compartment. The refrigerator includes two sets of cooling systems, one set of cooling systems provided in the refrigeration compartment and cooling the refrigeration compartment, and the other set of cooling systems provided in the freezing compartment and cooling the freezing compartment. The magnetic field preservation chamber is provided in the refrigerator chamber, and the air intake and return air outlets of the magnetic field preservation chamber are in communication with the freezing and cooling chamber, and the cooling system provided in the freezing and cooling chamber is capable of cooling the magnetic field preservation chamber. The magnetic field generator is configured to maintain a magnetic field strength within the storage space in the range of 10 gauss to 100 gauss, and the cooling system is configured to maintain a temperature within the storage space in the range of -10°C to 0°C.

[0013] Selectively, the refrigerator is a French door refrigerator, and the French door refrigerator includes a first compartment, a second compartment, and a third compartment, and the first compartment, the second compartment and the third compartment are arranged in order from top to bottom. The first room is a refrigerator room, the second room is a variable temperature room or a freezer room, and the third room is a freezer room. The magnetic field preservation chamber is provided in at least one of the first, second, and third chambers.

[0014] Selectively, the refrigerator is a T-type refrigerator, and the T-type refrigerator includes a first compartment, a second compartment, and a third compartment, the second and third compartments are arranged in the left-right direction, and the first compartment is located above the second and third compartments. The first room is a refrigerator room, the second room is a variable temperature room or a freezer room, and the third room is a freezer room. The magnetic field preservation chamber is provided in at least one of the first, second, and third chambers.

[0015] Selectively, the magnetic field preservation chamber is provided in the second chamber or the third chamber. The second or third chamber is provided with a plurality of magnetic field preservation chambers, which are arranged vertically, and the magnetic field generating device is located above and below the storage space of each magnetic field preservation chamber, respectively.

[0016] Selectively, the refrigerator includes at least one storage member, the storage member is placed in the magnetic preservation chamber, the storage member forms the storage space, and the cold air entering the magnetic preservation chamber flows around the storage member.

[0017] Selectively, the storage member is a drawer, the magnetic field generator is positioned at the top of the drawer, and there is a gap between it and the upper wall of the magnetic field storage chamber. The air intake is provided on the rear wall of the magnetic field preservation chamber and is located between the magnetic field generator and the upper wall of the magnetic field preservation chamber.

[0018] Selectively, two of the magnetic field generators are placed in the magnetic field preservation chamber, and the two magnetic field generators are positioned on opposite sides of the storage space.

[0019] Selectively, the magnetic pole distribution directions of the two magnetic field generators are parallel to the arrangement direction of the two magnetic field generators, and the magnetic pole directions of the two magnetic field generators are identical.

[0020] The refrigerator of the present application provides a magnetic field preservation chamber in the refrigerator, and a magnetic field generating device generates a magnetic field within the storage space of the magnetic field preservation chamber, so that the food stored in the storage space is affected by the magnetic field. Further, the magnetic field generating device is configured such that the magnetic field strength inside the storage space is in the range of 10 gauss or more and 100 gauss or less, and the cooling system is configured such that the temperature inside the storage space is in the range of -10°C or more and 0°C or less. This not only allows the food to be refrigerated at a sub-zero temperature but also enables the food to be refrigerated in an unfrozen state for a relatively long time, thereby reducing the refrigeration temperature of the food and contributing to an extension of the refrigerated storage period of the food. Also, when the magnetic field strength is in the range of 10 gauss or more and 100 gauss or less and the temperature is in the range of -10°C or more and 0°C or less, a relatively long unfrozen storage period can be obtained. When the temperature is less than -10°C, the freezing rate of the food significantly increases. Alternatively, the magnetic field generating device is configured such that the magnetic field strength inside the storage space is in the range of 5 gauss or more and 40 gauss or less, and the cooling system is configured such that the temperature inside the storage space is in the range of -30°C or more and -15°C or less. This ensures that the food is subjected to the action of a magnetic field of sufficient strength and a lower temperature, assisting in the rapid freezing of the food, reducing the formation of large ice crystals inside the food, thereby reducing the damage to food cells caused by ice crystals, reducing the juice leakage after food thawing, reducing the nutritional loss of the food, and ensuring the texture of the food. Also, when the magnetic field strength is in the range of 5 gauss or more and 40 gauss or less and the temperature is in the range of -30°C or more and -15°C or less, the effect of reducing ice crystals is relatively good. Also, a temperature less than -30°C places too high demands on the cooling system of the refrigerator and results in excessive implementation costs. When the temperature exceeds -15°C, the auto-oxidation rate of the unsaturated fatty acids in the food is fast, and the freshness retention effect of the food significantly decreases.

[0021] Through the detailed description of the specific embodiments of the present application with reference to the following drawings, those skilled in the art will better understand the above and other objects, advantages, and features of the present application.

[0022] As used herein, the term "comprise" and its variants "comprises", "comprised", "comprising", "including", "containing" do not exclude other features, components, elements or steps, unless otherwise required by the context.

Brief Description of the Drawings

[0023] Hereinafter, some specific embodiments of the present application will be described in detail in an exemplary and non-limiting manner with reference to the drawings. In the drawings, the same reference numerals indicate the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. [Figure 1] FIG. 1 is a schematic diagram of a refrigerator according to an embodiment of the present application. [Figure 2] FIG. 2 is a schematic cross-sectional view of a refrigerator according to an embodiment of the present application. [Figure 3] FIG. 3 is a partial schematic view of a refrigerator according to an embodiment of the present application. [Figure 4] FIG. 4 is a schematic diagram of a magnetic field generating device of a refrigerator according to an embodiment of the present application. [Figure 5] FIG. 5 is a schematic cross-sectional view of a refrigerator according to another embodiment of the present application. [Figure 6] FIG. 6 is a schematic cross-sectional view of a refrigerator according to yet another embodiment of the present application. [Figure 7] FIG. 7 is a schematic diagram of a refrigerator according to yet another embodiment of the present application. [Figure 8] FIG. 8 is a schematic cross-sectional view of a refrigerator according to yet another embodiment of the present application. [Figure 9] FIG. 9 is a schematic curve diagram of the juice outflow situation of food ingredients at -18°C and the magnetic field strength according to an embodiment of the present application.

Modes for Carrying Out the Invention

[0024] Those skilled in the art should understand that the embodiments described below represent only some, and not all, embodiments of this application. These embodiments are intended to illustrate the technical principles of this application and do not limit the scope of protection. All other embodiments that can be obtained by those skilled in the art without creative work based on the embodiments of this application should also be included in the scope of protection.

[0025] In the description of this embodiment, the directions and positional relationships indicated by terms such as "center," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" are based on the directions and positional relationships shown in the drawings and are merely for the purpose of facilitating and simplifying the description of this application. They do not imply that the shown devices or elements must have a specific direction, or that they must be composed of and operated in a specific direction, and therefore should not be understood as limitations of this application.

[0026] As shown in Figures 1 and 2, in one embodiment, the refrigerator includes a housing 100, a magnetic field generator 200, and a cooling system 300. The housing 100 is provided with one magnetic field storage compartment 110. The magnetic field generator 200 is for generating a magnetic field within the storage space 111 of the magnetic field storage compartment 110. The cooling system 300 is for cooling the magnetic field storage compartment 110. The magnetic field generator 200 is configured to maintain a magnetic field strength within the storage space 111 in the range of 10 Gauss to 100 Gauss, and the cooling system 300 is configured to maintain a temperature within the storage space 111 in the range of -10°C to 0°C.

[0027] Referring to Figures 1 and 2, the cooling system 300 specifically includes an evaporator 310 and a blower 320. The magnetic preservation chamber 110 is provided with a preservation air inlet 112 and a return air inlet 113. Air generated by the blower 320 enters the magnetic preservation chamber 110 through the preservation air inlet 112 and flows out of the magnetic preservation chamber 110 through the return air inlet 113, thereby cooling the magnetic preservation chamber 110.

[0028] Referring to Figures 1 through 3, specifically, the refrigerator is a French door refrigerator, and the casing 100 of the French door refrigerator is provided with a first compartment 101, a second compartment 102, and a third compartment 103. The first compartment 101, the second compartment 102, and the third compartment 103 are arranged in order from top to bottom. Here, the first compartment 101 is the refrigeration compartment, the second compartment 102 is the variable temperature compartment, and the third compartment 103 is the freezer compartment.

[0029] The French door refrigerator further includes a first cooling compartment 104 and a second cooling compartment 105. The refrigerator includes two sets of cooling systems 300: one set of cooling systems 300 is located in the first cooling compartment 104 and cools the first compartment 101; the other set of cooling systems 300 is located in the second cooling compartment 105 and cools the second compartment 102 and the third compartment 103. One magnetic preservation compartment 110 is located in the first compartment 101, i.e., the refrigeration compartment.

[0030] The first cooling chamber 104 of the French door refrigerator is located behind the first chamber 101. The cooling system 300 located in the first cooling chamber 104 consists of an evaporator 310 and a blower 320. The evaporator 310 generates cold energy within the first cooling chamber 104, and the blower 320 generates cold air with cold energy, which cools the first chamber 101. A ventilation passage 106 is provided between the first chamber 101 and the first cooling chamber 104. The ventilation passage 106 has multiple air inlets that communicate with the first chamber 101. The cold air generated by the blower 320 enters the ventilation passage 106 and then enters the first chamber 101 through the multiple air inlets in the ventilation passage 106 that communicate with the first chamber 101, cooling the first chamber 101.

[0031] Referring to Figures 1 through 3, the magnetic field preservation chamber 110 is located to the lower right of the first chamber 101 and is a relatively sealed space separated by an insulating plate. The preservation air supply port 112 of the magnetic field preservation chamber 110 is one of several air supply ports in the ventilation passage 106, allowing the cold air generated by the blower 320 to enter the magnetic field preservation chamber 110. The return air port 113 connects the magnetic field preservation chamber 110 to the first cooling chamber 104, allowing the cold air that has entered the magnetic field preservation chamber 110 to return to the first cooling chamber 104 through the return air port 113, thereby creating a circulating airflow within the magnetic field preservation chamber 110 and cooling it.

[0032] Regarding the areas of the first chamber 101 other than the magnetic preservation chamber 110, cold air can enter these areas through air inlets other than the preservation air inlet 112 on the ventilation passage 106, and the cold air that enters these areas can return to the first cooling chamber 104 through the return air inlet 113.

[0033] Continuing to refer to Figures 1 to 3, the second cooling chamber 105 is located behind the second chamber 102 and the third chamber 103. The second chamber 102 is provided with an air intake and an air return port that communicate with the second cooling chamber 105, and the third chamber 103 is also provided with an air intake and an air return port that communicate with the second cooling chamber 105. Therefore, regarding the evaporator 310 and blower 320 of the cooling system 300 located in the second cooling chamber 105, the evaporator 310 generates cold air within the second cooling chamber 105, and the blower 320 generates cold air accompanied by cold air. The cold air cools the second chamber 102 through its air intake and air return ports. The cold air cools the third chamber 103 through its air intake and air return ports.

[0034] Referring to Figures 2 to 4, the refrigerator includes one storage component 400, which is located in the magnetic preservation chamber 110, and the storage component 400 forms a storage space 111. Specifically, the storage component 400 is a drawer, and the drawer is provided in the magnetic preservation chamber 110 so as to be removable.

[0035] Referring to Figures 2 to 4, the magnetic field storage chamber 110 is further provided with two magnetic field generators 200, which are located on opposite sides of the storage space 111. Specifically, the two magnetic field generators 200 are located at the top and bottom of the drawer, respectively. Each magnetic field generator 200 includes a magnetic member 210 and a magnetic induction plate 220. The magnetic member 210 is for generating a magnetic field within the storage space 111, and the magnetic induction plate 220 is for inducing the magnetic field generated by the magnetic member 210 so that the magnetic field is distributed more uniformly within the storage space 111.

[0036] Referring to Figure 3, preferably, the magnetic pole distribution direction of the two magnetic field generators 200 is parallel to the arrangement direction of the two magnetic field generators 200, and the magnetic pole direction of the two magnetic field generators 200 is the same. Specifically, the two magnetic field generators 200 are arranged at the top and bottom of the drawer, i.e., vertically. Therefore, the north and south poles of each magnetic field generator 200 are also distributed vertically. Furthermore, the magnetic pole direction of the two magnetic field generators 200 is the same, and specifically, the north poles of both magnetic field generators 200 are below the south poles.

[0037] Furthermore, it is not necessary to place storage members 400 in the magnetic field preservation chamber 110; in other words, the entire space of the magnetic field preservation chamber 110 may be used as a storage space.

[0038] Furthermore, one or more magnetic field generators 200 may be placed in the magnetic field preservation room 110.

[0039] The magnetic member 210 may be a permanent magnet. Alternatively, it may be a wire coil, and the energized wire coil generates a magnetic field. Furthermore, the magnetic field generator 200 may consist only of a magnetic member.

[0040] The magnetic pole directions of the two magnetic field generators 200 may be different.

[0041] Furthermore, multiple magnetic field preservation chambers may be provided in the first chamber 101. For example, both the lower left and lower right sections may be designated as magnetic field preservation chambers.

[0042] Referring to Figures 1 to 3, the magnetic field generator 200 is configured to maintain a magnetic field strength within the storage space 111 in the range of 10 gauss to 100 gauss. That is, the magnetic field strength within the magnetic field storage chamber 110 is at least 10 gauss at the minimum location and at least 100 gauss at the maximum location. For example, the magnetic field strength at a certain point within the storage space 111 may be 10 gauss, 20 gauss, 30 gauss, 40 gauss, 50 gauss, 60 gauss, 70 gauss, 80 gauss, 90 gauss, 100 gauss, etc. Preferably, the magnetic field strength is in the range of 30 gauss to 60 gauss.

[0043] Furthermore, the cooling system 300 for cooling the magnetic preservation chamber 110 is configured to maintain the temperature inside the storage space 111 within a range of -10°C to 0°C. For example, the temperature inside the storage space 111 may be -10°C, -4°C, -3°C, -2°C, -1°C, 0°C, etc. Preferably, the cooling system 300 is configured to maintain the temperature inside the storage space 111 within a range of -5°C to -2°C. Specifically, a temperature sensor is provided inside the storage space 111, and the temperature inside the storage space 111 is the value detected by the temperature sensor.

[0044] In this embodiment, a magnetic field preservation chamber 110 is provided in the first compartment 101 of the refrigerator, i.e., the refrigeration compartment. A magnetic field generator 200 generates a magnetic field within the storage space 111 of the magnetic field preservation chamber 110, so that the food stored in the storage space 111 is affected by the magnetic field. The magnetic field generator 200 is configured to maintain a magnetic field strength within the storage space 111 in the range of 10 gauss to 100 gauss, and the cooling system 300 is configured to maintain a temperature within the storage space 111 in the range of -10°C to 0°C. This not only allows food to be refrigerated at sub-zero temperatures, but also allows food to be refrigerated in an unfrozen state for a relatively long period of time, thus lowering the refrigeration temperature of the food and contributing to extending the refrigerated storage period of the food. Furthermore, when the magnetic field strength is in the range of 10 gauss to 100 gauss and the temperature is in the range of -10°C to 0°C, a relatively long unfrozen storage period can be obtained. Below -10°C, the freezing rate of food increases significantly.

[0045] In one embodiment, the magnetic field generator 200 is configured to maintain a magnetic field strength in the storage space 111 in the range of 10 gauss to 20 gauss, and the cooling system 300 is configured to maintain a temperature inside the storage space 111 in the range of -3°C to -1°C. This allows for a relatively long non-frozen storage time for food items and provides good freshness preservation.

[0046] In one embodiment, the magnetic field generator 200 is configured to maintain a magnetic field strength in the storage space 111 between 30 gauss and 60 gauss, and the cooling system 300 is configured to maintain a temperature inside the storage space 111 between -5°C and -2°C. When the storage temperature of food is 1-2°C lower than its initial freezing point, the activity of microorganisms decreases significantly, and most bacteria cannot grow. Since the initial freezing point of most food is approximately -0.5°C to -2°C, by setting the magnetic field strength to between 30 gauss and 60 gauss and the temperature inside the storage space 111 to between -5°C and -2°C, the optimal temperature requirement, which is lower than the initial freezing point of most food, is met without freezing the food. Furthermore, since -5°C is higher than the minimum subcooling point of most food under conditions of a magnetic field strength between 30 gauss and 60 gauss, the refrigeration effect of the food is optimized, resulting in a relatively longer non-frozen storage time and better freshness preservation.

[0047] Preferably, the magnetic field generator 200 is configured to maintain a magnetic field strength in the storage space 111 in the range of 35 gauss to 45 gauss, and the cooling system 300 is configured to maintain a temperature inside the storage space 111 in the range of -5°C to -2°C.

[0048] As shown in Figures 2 and 3, the cold air entering the magnetic field preservation chamber 110 also flows around the storage member 400. Specifically, the magnetic field generator 200 is positioned at the top of the drawer and has a gap between it and the upper wall of the magnetic field preservation chamber 110. The preservation air supply port 112 is provided on the rear wall of the magnetic field preservation chamber 110 and is located between the magnetic field generator 200 and the upper wall of the magnetic field preservation chamber 110.

[0049] Specifically, when the drawer is stored inside the magnetic field preservation chamber 110, i.e., in a storage state, the magnetic field generator 200 covers the upper opening of the drawer. There is a gap between the magnetic field generator 200 and the upper wall of the magnetic field preservation chamber 110, which forms an air passage extending from the rear end of the magnetic field preservation chamber 110 to the front end of the drawer, and the preservation air supply port 112 of the magnetic field preservation chamber 110 is directed towards the air passage between the magnetic field generator 200 and the upper wall of the magnetic field preservation chamber 110. Cold air entering the magnetic field preservation chamber 110 from the preservation air supply port 112 flows forward along the air passage and flows downward at the front end of the drawer. After that, it flows backward from the bottom of the drawer and forms an airflow surrounding the storage member 400 until it flows out from the return air port 113.

[0050] By circulating the cold air entering the magnetic preservation chamber 110 around the storage component 400, the cold air is effectively prevented from directly contacting the food, thus preventing the food's temperature from becoming significantly lower than the temperature of the magnetic preservation chamber 110 and preventing any impact on the food's preservation effect.

[0051] The storage component 400 may be a storage box, and it can be sealed, thereby allowing cold air to flow around the storage component 400.

[0052] In addition, the second and third compartments of a French door refrigerator may both be freezer compartments.

[0053] Furthermore, the refrigerator does not necessarily have to be a French door refrigerator. Specifically, for a refrigerator with a refrigerator compartment, the casing is provided with a refrigerator compartment and a refrigerator cooling compartment. The cooling system is provided in the refrigerator cooling compartment to cool the refrigerator compartment, and the magnetic preservation compartment is provided in the refrigerator compartment. The preservation air intake and return air intake of the magnetic preservation compartment are in communication with the refrigerator cooling compartment, and the cooling system provided in the refrigerator cooling compartment is capable of cooling the magnetic preservation compartment. In addition, the magnetic field generator is configured to maintain a magnetic field strength inside the storage space in the range of 10 gauss to 100 gauss, and the cooling system is configured to maintain a temperature inside the storage space in the range of -10°C to 0°C.

[0054] As shown in Figures 1 and 5, in one embodiment, the refrigerator is a French door refrigerator, and the casing of the French door refrigerator is provided with a first compartment 101, a second compartment 102, and a third compartment 103. The first compartment 101, the second compartment 102, and the third compartment 103 are arranged in order from top to bottom. Here, the first compartment 101 is the refrigeration compartment, the second compartment 102 is the variable temperature compartment, and the third compartment 103 is the freezer compartment.

[0055] The French door refrigerator further includes a first cooling chamber 104 and a second cooling chamber 105. The refrigerator includes two sets of cooling systems 300: one set of cooling systems 300 is provided in the first cooling chamber 104 and cools the first chamber 101; the other set of cooling systems 300 is provided in the second cooling chamber 105 and cools the second chamber 102 and the third chamber 103. One magnetic preservation chamber 110 is provided in the second chamber 102, and another magnetic preservation chamber 110 is provided in the second chamber 102 and the third chamber 103, i.e., the variable temperature chamber and the freezer chamber.

[0056] The first cooling chamber 104 is located behind the first chamber 101. The cooling system 300, consisting of an evaporator 310 and a blower 320, is located within the first cooling chamber 104. The evaporator 310 generates cold energy within the first cooling chamber 104, and the blower 320 generates cold air with cold energy, which cools the first chamber 101.

[0057] Referring further to Figures 1 and 5, the second cooling chamber 105 is located behind the second chamber 102 and the third chamber 103. The freshness supply air inlet and return air inlet of the magnetic freshness storage chamber 110 located in the second chamber 102 are in communication with the second cooling chamber 105, and the freshness supply air inlet and return air inlet of the magnetic freshness storage chamber 110 located in the third chamber 103 are also in communication with the second cooling chamber 105. Therefore, regarding the evaporator 310 and blower 320 of the cooling system 300 located in the second cooling chamber 105, the evaporator 310 generates cold air within the second cooling chamber 105, and the blower 320 generates cold air accompanied by cold air. The cold air can cool the magnetic freshness storage chamber 110 located in the second chamber 102 and the magnetic freshness storage chamber 110 located in the third chamber 103, respectively.

[0058] In the magnetic field preservation chamber 110 located in the third chamber 103, the magnetic field generator 200 is configured to maintain a magnetic field strength inside the storage space 111 in the range of 5 gauss to 40 gauss, and the cooling system 300 is configured to maintain a temperature inside the storage space 111 in the range of -30°C to -15°C.

[0059] Specifically, the magnetic field generator 200 is configured such that the magnetic field strength within the storage space 111 is at least 5 gauss at the minimum location and no more than 40 gauss at the maximum location. For example, the magnetic field strength at a certain point within the storage space 111 may be 5 gauss, 8 gauss, 10 gauss, 16 gauss, 20 gauss, 30 gauss, 37 gauss, 40 gauss, etc. Preferably, the magnetic field strength is in the range of 10 gauss to 20 gauss. Furthermore, the cooling system 300 for cooling the magnetic field storage chamber 110 is configured to maintain the temperature inside the storage space 111 in the range of -30°C to -15°C. For example, the temperature inside the storage space 111 may be -30°C, -25°C, -20°C, -18°C, -16°C, -15°C, etc. Preferably, the cooling system 300 is configured to maintain the temperature inside the storage space 111 in the range of -25°C to -18°C. Specifically, a temperature sensor is installed inside the storage space 111, and the temperature inside the storage space 111 is the value detected by the temperature sensor.

[0060] In one embodiment, the magnetic field generator 200 is configured to maintain a magnetic field strength of 10 gauss or more and 20 gauss or less inside the storage space 111, and the cooling system 300 is configured to maintain a temperature of -25°C or more and -18°C or less inside the storage space 111. When the magnetic field strength is in the range of 10 gauss or more and 20 gauss or less, and the temperature of the storage space 111 is in the range of -25°C or more and -18°C or less, the freshness preservation effect of the food is relatively good.

[0061] In one embodiment, the magnetic field generator 200 is configured to maintain a magnetic field strength of 15 gauss or more and 20 gauss or less inside the storage space 111, and the cooling system 300 is configured to maintain a temperature of -25°C or more and -18°C or less inside the storage space 111. When the magnetic field strength is in the range of 15 gauss or more and 20 gauss or less, and the temperature of the storage space 111 is in the range of -25°C or more and -18°C or less, the freshness preservation effect of the food is better.

[0062] In the magnetic field preservation chamber 110 provided in the second chamber 102, the magnetic field generator 200 is configured to set the magnetic field strength inside the storage space 111 to a range of 10 gauss or more and 100 gauss or less, and the cooling system 300 is configured to set the temperature inside the storage space 111 to a range of -10°C or more and 0°C or less, or the magnetic field generator 200 is configured to set the magnetic field strength inside the storage space 111 to a range of 5 gauss or more and 40 gauss or less, and the cooling system 300 is configured to set the temperature inside the storage space 111 to a range of -30°C or more and -15°C or less.

[0063] In other words, for the magnetic field preservation chamber 110 provided in the second chamber 102, the magnetic field generator 200 can be configured to set the magnetic field strength inside the storage space 111 in the range of 10 gauss to 100 gauss, and the cooling system 300 can be configured to set the temperature inside the storage space 111 in the range of -10°C to 0°C. Alternatively, the magnetic field generator 200 can be configured to set the magnetic field strength inside the storage space 111 in the range of 5 gauss to 40 gauss, and the cooling system 300 can be configured to set the temperature inside the storage space 111 in the range of -30°C to -15°C.

[0064] In this embodiment, a magnetic field preservation chamber 110 is provided in the freezer compartment of the refrigerator, and a magnetic field generator 200 generates a magnetic field within the storage space 111 of the magnetic field preservation chamber 110, thereby subjecting the food stored in the storage space 111 to the magnetic field. The magnetic field generator 200 is configured to maintain a magnetic field strength of 5 gauss or more and 40 gauss or less inside the storage space 111, and the cooling system 300 is configured to maintain a temperature of -30°C or more and -15°C or less inside the storage space 111. This ensures that the food is subjected to a sufficiently strong magnetic field and a lower temperature, assisting in the rapid freezing of the food, reducing the formation of large ice crystals inside the food, thereby reducing damage to food cells caused by ice crystals, reducing the leakage of liquid after thawing, reducing nutrient loss of the food, and ensuring the texture of the food. Furthermore, when the magnetic field strength is in the range of 5 gauss or more and 40 gauss or less, and the temperature is in the range of -30°C or more and -15°C or less, the effect of reducing ice crystals is relatively good. Furthermore, temperatures below -30°C place too high a demand on the refrigerator's cooling system, resulting in excessive costs. Above -15°C, the auto-oxidation rate of unsaturated fatty acids in food accelerates, significantly reducing the food's freshness preservation effect.

[0065] Furthermore, by providing a magnetic field preservation chamber 110 in the temperature-variable compartment of the refrigerator, the magnetic field generator 200 generates a magnetic field within the storage space 111 of the magnetic field preservation chamber 110, and the food stored in the storage space 111 is affected by the magnetic field. The magnetic field generator 200 is configured to set the magnetic field strength inside the storage space 111 in the range of 10 gauss to 100 gauss, and the cooling system 300 is configured to set the temperature inside the storage space 111 in the range of -10°C to 0°C, or the magnetic field generator 200 is configured to set the magnetic field strength inside the storage space 111 in the range of 5 gauss to 40 gauss, and the cooling system 300 is configured to set the temperature inside the storage space 111 in the range of -30°C to -15°C, thereby flexibly realizing magnetic field refrigeration or magnetic field freezing effects as needed.

[0066] Furthermore, the second chamber 102 may be equipped with multiple magnetic field preservation chambers, for example, two magnetic field preservation chambers arranged on the left and right. Alternatively, the third chamber 103 may also be equipped with multiple magnetic field preservation chambers, for example, two magnetic field preservation chambers arranged on the left and right.

[0067] In addition, the second and third compartments of a French door refrigerator may both be freezer compartments.

[0068] Furthermore, the refrigerator does not necessarily have to be a French door refrigerator. Specifically, for a refrigerator with a variable temperature compartment, the casing is provided with a variable temperature compartment and a variable temperature cooling compartment. The cooling system is provided in the variable temperature cooling compartment to cool the variable temperature compartment, and the magnetic field preservation compartment is provided in the variable temperature compartment. The preservation air supply and return air ports of the magnetic field preservation compartment are in communication with the variable temperature cooling compartment, and the cooling system provided in the variable temperature cooling compartment is capable of cooling the magnetic field preservation compartment. The magnetic field generator is configured to set the magnetic field strength inside the storage space in the range of 10 gauss to 100 gauss, and the cooling system is configured to set the temperature inside the storage space in the range of -10°C to 0°C, or the magnetic field generator is configured to set the magnetic field strength inside the storage space in the range of 5 gauss to 40 gauss, and the cooling system is configured to set the temperature inside the storage space in the range of -30°C to -15°C.

[0069] Furthermore, in the case of a refrigerator with a freezer compartment, the casing is provided with a freezer compartment and a freezer-cooling compartment. The cooling system is provided in the freezer-cooling compartment to cool the freezer compartment, and the magnetic field preservation compartment is provided in the freezer compartment. The preservation air intake and return air intake of the magnetic field preservation compartment are in communication with the freezer-cooling compartment, and the cooling system provided in the freezer-cooling compartment is capable of cooling the magnetic field preservation compartment. The magnetic field generator is configured to maintain a magnetic field strength inside the storage space in the range of 5 gauss to 40 gauss, and the cooling system is configured to maintain a temperature inside the storage space in the range of -30°C to -15°C.

[0070] As shown in Figures 1 and 6, in one embodiment, the refrigerator is a French door refrigerator, and the casing of the French door refrigerator is provided with a first compartment 101, a second compartment 102, and a third compartment 103. The first compartment 101, the second compartment 102, and the third compartment 103 are arranged in order from top to bottom. Here, the first compartment 101 is the refrigeration compartment, the second compartment 102 is the variable temperature compartment, and the third compartment 103 is the freezer compartment.

[0071] The French door refrigerator further includes a first cooling compartment 104 and a second cooling compartment 105. The refrigerator includes two sets of cooling systems 300: one set of cooling systems 300 is located in the first cooling compartment 104 and cools the first compartment 101; the other set of cooling systems 300 is located in the second cooling compartment 105 and cools the second compartment 102 and the third compartment 103. One magnetic preservation compartment 110 is located in the first compartment 101, i.e., the refrigeration compartment.

[0072] The first, second, and third compartments 103 of the French door refrigerator are arranged in order from top to bottom. The first cooling chamber 104 is located behind the first compartment 101. The cooling system 300, consisting of an evaporator 310 and a blower 320, is located within the first cooling chamber 104. The evaporator 310 generates cold energy within the first cooling chamber 104, and the blower 320 generates cold air with cold energy, which cools the first compartment 101.

[0073] Referring further to Figures 1 and 6, the second cooling chamber 105 is located behind the second chamber 102 and the third chamber 103. The second chamber 102 is provided with an air intake and an air return port that communicate with the second cooling chamber 105, and the third chamber 103 is also provided with an air intake and an air return port that communicate with the second cooling chamber 105. Therefore, regarding the evaporator 310 and blower 320 of the cooling system 300 located in the second cooling chamber 105, the evaporator 310 generates cold air within the second cooling chamber 105, and the blower 320 generates cold air accompanied by cold air. The cold air cools the second chamber 102 through its air intake and air return ports. The cold air cools the third chamber 103 through its air intake and air return ports.

[0074] Furthermore, the magnetic preservation chamber 110 is located in the lower right of the first chamber 101. Two communication holes 107 are provided between the first cooling chamber 104 and the second cooling chamber 105. The preservation air supply port 112 and return air port 113 of the magnetic preservation chamber 110 are connected to the two communication holes 107, respectively. This allows the cooling system 300 in the second cooling chamber 105 to cool the second chamber 102 and the third chamber 103, as well as the magnetic preservation chamber 110 in the first chamber 101.

[0075] Furthermore, the magnetic field generator 200 is configured to maintain a magnetic field strength within the storage space 111 in the range of 10 gauss to 100 gauss, and the cooling system 300 is configured to maintain a temperature within the storage space in the range of -10°C to 0°C.

[0076] In addition, the second and third compartments of a French door refrigerator may both be freezer compartments.

[0077] Note that the refrigerator does not have to be a French door refrigerator. Specifically, for a refrigerator having a refrigerator compartment and a freezer compartment, the casing is provided with a refrigerator compartment, a freezer compartment, a refrigerator cooling compartment, and a freezer cooling compartment. The refrigerator includes two sets of cooling systems: one set of cooling systems is provided in the refrigerator cooling compartment to cool the refrigerator compartment, and the other set of cooling systems is provided in the freezer cooling compartment to cool the freezer compartment. A magnetic field preservation compartment is provided in the refrigerator compartment, and the preservation air supply and return air ports of the magnetic field preservation compartment are in communication with the freezer cooling compartment, and the cooling system provided in the freezer cooling compartment is capable of cooling the magnetic field preservation compartment. The magnetic field generator is configured to maintain a magnetic field strength inside the storage space in the range of 10 gauss to 100 gauss, and the cooling system is configured to maintain a temperature inside the storage space in the range of -10°C to 0°C.

[0078] Regarding French door refrigerators, the magnetic preservation compartment can be installed in at least one of the first, second, and third compartments. For example, it may be installed only in the first compartment, or only in the second compartment, or only in the third compartment, or in the first and third compartments, or in the first and second compartments, or in the first, second, and third compartments.

[0079] As shown in Figures 7 and 8, in one embodiment, the refrigerator is a T-type refrigerator, which includes a first compartment 101, a second compartment 102, and a third compartment 103. The second compartment 102 and the third compartment 103 are arranged in the left-right direction, and the first compartment 101 is located above the second compartment 102 and the third compartment 103. The first compartment 101 is a refrigerated compartment, the second compartment 102 is a variable-temperature compartment, and the third compartment 103 is a freezer compartment.

[0080] The T-type refrigerator further includes a first cooling chamber 104 and a second cooling chamber 105. The refrigerator includes two sets of cooling systems 300; one set of cooling systems 300 is located in the first cooling chamber 104 and cools the first chamber 101. The other set of cooling systems 300 is located in the second cooling chamber and cools the second chamber 102 and the third chamber 103. Three magnetic preservation chambers 110 are located in the third chamber 103, i.e., the freezer chamber.

[0081] Referring to Figures 7 and 8, specifically, the first cooling chamber 104 is located behind the first chamber 101. The evaporator 310 and blower 320 of the cooling system 300 located within the first cooling chamber 104 are configured such that the evaporator 310 generates cold energy within the first cooling chamber 104, and the blower 320 generates cold air accompanied by cold energy, which cools the first chamber 101.

[0082] Continuing to refer to Figures 7 and 8, the second cooling chamber 105 is located behind the second chamber 102 and the third chamber 103. The second chamber 102 is provided with an air intake and an air return port that communicate with the second cooling chamber 105, and the third chamber 103 is also provided with an air intake and an air return port that communicate with the second cooling chamber 105. Therefore, regarding the evaporator 310 and blower 320 of the cooling system 300 located in the second cooling chamber 105, the evaporator 310 generates cold air within the second cooling chamber 105, and the blower 320 generates cold air accompanied by cold air. The cold air cools the second chamber 102 through its air intake and air return ports. The cold air cools the third chamber 103 through its air intake and air return ports.

[0083] Furthermore, the three magnetic field preservation chambers 110 are arranged vertically, and magnetic field generators 200 are located at the top and bottom of the storage space 111 of each magnetic field preservation chamber 110. Each magnetic field preservation chamber 110 is provided with a preservation air supply port 112, and a single return air port 113 is shared, allowing the cooling system 300 located in the second cooling chamber 105 to cool each magnetic field preservation chamber 110 through its preservation air supply port 112.

[0084] Furthermore, in the magnetic field preservation chamber 110 located in the third chamber 103, the magnetic field generator 200 is configured to maintain a magnetic field strength within the storage space in the range of 5 gauss to 40 gauss, and the cooling system 300 is configured to maintain a temperature within the storage space in the range of -30°C to -15°C.

[0085] Specifically, the magnetic field generator 200 is configured such that the magnetic field strength in the magnetic field preservation chamber 110 is at least 5 gauss at the minimum location and no more than 40 gauss at the maximum location. For example, the magnetic field strength at a certain point in the storage space 111 may be 5 gauss, 8 gauss, 10 gauss, 16 gauss, 20 gauss, 30 gauss, 37 gauss, 40 gauss, etc. Preferably, the magnetic field strength is in the range of 10 gauss to 20 gauss. Furthermore, the cooling system 300 for cooling the magnetic field preservation chamber 110 is configured to maintain the temperature inside the storage space 111 in the range of -30°C to -15°C. For example, the temperature inside the storage space 111 may be -30°C, -25°C, -20°C, -18°C, -16°C, -15°C, etc. Preferably, the cooling system 300 is configured to maintain the temperature inside the storage space 111 in the range of -25°C to -18°C. Specifically, a temperature sensor is installed inside the storage space 111, and the temperature inside the storage space 111 is the value detected by the temperature sensor.

[0086] Preferably, three magnetic field storage chambers 110 are arranged vertically, and magnetic field generators 200 are located at the top and bottom of the storage space 111 of each magnetic field storage chamber 110, so that two adjacent magnetic field storage chambers 110 can share one magnetic field generator 200. For example, the magnetic field generator 200 at the bottom of the uppermost magnetic field storage chamber 110 can function as both the magnetic field generator 200 at the bottom of the uppermost magnetic field storage chamber 110 and the magnetic field generator 200 at the top of the intermediate magnetic field storage chamber 110.

[0087] Preferably, the direction of the magnetic pole distribution of each magnetic field generator 200 is parallel to the arrangement direction of the multiple magnetic field generators 200, and the magnetic pole directions of the multiple magnetic field generators 200 are the same.

[0088] Note that the magnetic pole directions of the multiple magnetic field generators 200 do not all have to be the same.

[0089] Furthermore, one, two, or three or more magnetic preservation compartments may be installed in the freezer.

[0090] Furthermore, the second chamber 102 may be placed on the right side and the third chamber 103 on the left side. Alternatively, the second chamber 102 may be placed on the left side and the third chamber 103 on the right side.

[0091] Note that both the second and third compartments of a T-type refrigerator may be freezer compartments.

[0092] Furthermore, the T-type refrigerator can also be equipped with three cooling chambers and three cooling systems. Each of the three cooling systems is located in one of the three cooling chambers and is used to cool the first, second, and third chambers, respectively.

[0093] Regarding the T-type refrigerator, the magnetic preservation chamber can be installed in at least one of the first, second, and third chambers. For example, it may be installed only in the first chamber, or only in the second chamber, or only in the third chamber, or in the first and third chambers, or in the first and second chambers, or in the second and third chambers, or in the first, second and third chambers.

[0094] In one embodiment, referring to Figure 9, the relationship between the rate of liquid leakage from food and magnetic field strength is shown at a temperature of -18°C and the same storage time. Here, the vertical axis represents the change from the reference value of the liquid leakage rate, with 0% on the vertical axis indicating the reference value position, an upward movement indicating improvement from the reference value, and a downward movement indicating deterioration from the reference value. According to the experimental data, the rate of liquid leakage after thawing food is significantly improved when the magnetic field strength is in the range of 10 Gauss to 20 Gauss, and this is particularly noticeable in the range of 15 Gauss to 20 Gauss. In the temperature range of -30°C to -15°C, the rate of liquid leakage from food changes in much the same way as the trend shown in the figure.

[0095] Up to this point, those skilled in the art should recognize that, although the text has described and illustrated in detail many exemplary embodiments of this application, many other variations or modifications that conform to the principles of this application can be directly determined or inferred based on the disclosures of this application without departing from the spirit and scope of this application. Therefore, the scope of this application should be understood and recognized as encompassing all of these other variations or modifications.

Claims

1. It is a refrigerator, The casing and The housing includes at least one magnetic field preservation chamber, A magnetic field generating device for generating a magnetic field within the storage space of the aforementioned magnetic field preservation room, The system includes a cooling system for cooling the magnetic field preservation chamber, The magnetic field generator is configured to maintain a magnetic field strength within the storage space in the range of 10 gauss to 100 gauss, and the cooling system is configured to maintain a temperature within the storage space in the range of -10°C to 0°C, or The magnetic field generator is configured to maintain a magnetic field strength within the storage space in the range of 5 gauss to 40 gauss, and the cooling system is configured to maintain a temperature within the storage space in the range of -30°C to -15°C. refrigerator.

2. The magnetic field generator is configured to maintain a magnetic field strength within the storage space in the range of 30 gauss to 60 gauss, and the cooling system is configured to maintain a temperature within the storage space in the range of -10°C to 0°C. The refrigerator according to claim 1.

3. The magnetic field generator is configured to maintain a magnetic field strength within the storage space in the range of 10 Gauss to 20 Gauss, and the cooling system is configured to maintain a temperature within the storage space in the range of -30°C to -15°C. The refrigerator according to claim 1 or 2.

4. The cooling system includes an evaporator and a blower, and the magnetic preservation chamber is provided with an air intake and an air return port for preservation, and the air generated by the blower enters the magnetic preservation chamber through the air intake and flows out of the magnetic preservation chamber through the air return port, thereby cooling the magnetic preservation chamber. A refrigerator according to any one of claims 1 to 3.

5. The enclosure is provided with a refrigerator compartment and a refrigerator cooling compartment, and the cooling system is provided in the refrigerator cooling compartment and cools the refrigerator compartment. The magnetic field preservation chamber is provided in the refrigerator chamber, the air intake and return air intake of the magnetic field preservation chamber are in communication with the refrigerator cooling chamber, and the cooling system provided in the refrigerator cooling chamber is capable of cooling the magnetic field preservation chamber. The magnetic field generator is configured to maintain a magnetic field strength within the storage space in the range of 10 gauss to 100 gauss, and the cooling system is configured to maintain a temperature within the storage space in the range of -10°C to 0°C. A refrigerator according to any one of claims 1 to 4.

6. The housing is provided with a temperature-variable chamber and a temperature-variable cooling chamber, and the cooling system is provided in the temperature-variable cooling chamber and cools the temperature-variable chamber. The magnetic field preservation chamber is provided in the temperature variable chamber, the air intake and return air outlet of the magnetic field preservation chamber are in communication with the temperature variable cooling chamber, and the cooling system provided in the temperature variable cooling chamber is capable of cooling the magnetic field preservation chamber. The magnetic field generator is configured to maintain a magnetic field strength within the storage space in the range of 10 gauss to 100 gauss, and the cooling system is configured to maintain a temperature within the storage space in the range of -10°C to 0°C, or The magnetic field generator is configured to maintain a magnetic field strength within the storage space in the range of 5 gauss to 40 gauss, and the cooling system is configured to maintain a temperature within the storage space in the range of -30°C to -15°C. A refrigerator according to any one of claims 1 to 4.

7. The enclosure is provided with a freezer chamber and a refrigeration / cooling chamber, and the cooling system is provided in the refrigeration / cooling chamber and cools the freezer chamber. The magnetic field preservation chamber is provided in the freezer chamber, the air intake and return air intake of the magnetic field preservation chamber are in communication with the freezer / cooling chamber, and the cooling system provided in the freezer / cooling chamber is capable of cooling the magnetic field preservation chamber. The magnetic field generator is configured to maintain a magnetic field strength within the storage space in the range of 5 gauss to 40 gauss, and the cooling system is configured to maintain a temperature within the storage space in the range of -30°C to -15°C. A refrigerator according to any one of claims 1 to 4.

8. The enclosure is provided with a refrigerator compartment, a freezer compartment, a refrigerated cooling compartment, and a freezer cooling compartment. The refrigerator includes two sets of cooling systems, one set of cooling systems provided in the refrigeration compartment and cooling the refrigeration compartment, and the other set of cooling systems provided in the freezing compartment and cooling the freezing compartment. The magnetic field preservation chamber is provided in the refrigerator chamber, and the air intake and return air outlets of the magnetic field preservation chamber are in communication with the freezing and cooling chamber, and the cooling system provided in the freezing and cooling chamber is capable of cooling the magnetic field preservation chamber. The magnetic field generator is configured to maintain a magnetic field strength within the storage space in the range of 10 gauss to 100 gauss, and the cooling system is configured to maintain a temperature within the storage space in the range of -10°C to 0°C. A refrigerator according to any one of claims 1 to 4.

9. The refrigerator is a French door refrigerator, and the French door refrigerator includes a first compartment, a second compartment, and a third compartment, and the first compartment, the second compartment and the third compartment are arranged in order from top to bottom. The first room is a refrigerator room, the second room is a variable temperature room or a freezer room, and the third room is a freezer room. The magnetic field preservation chamber is provided in at least one of the first, second, and third chambers. A refrigerator according to any one of claims 1 to 4.

10. The refrigerator is a T-type refrigerator, and the T-type refrigerator includes a first compartment, a second compartment, and a third compartment, the second and third compartments are arranged in the left-right direction, and the first compartment is provided above the second and third compartments. The first room is a refrigerator room, the second room is a variable temperature room or a freezer room, and the third room is a freezer room. The magnetic field preservation chamber is provided in at least one of the first, second, and third chambers. A refrigerator according to any one of claims 1 to 4.

11. The magnetic field preservation chamber is provided in the second or third chamber. The second or third chamber is provided with a plurality of magnetic field preservation chambers, the plurality of magnetic field preservation chambers are arranged vertically, and the magnetic field generating device is located above and below the storage space of each magnetic field preservation chamber, respectively. The refrigerator according to claim 10.

12. The refrigerator includes at least one storage member, the storage member is placed in the magnetic preservation chamber, the storage member forms the storage space, and the cold air entering the magnetic preservation chamber flows around the storage member. A refrigerator according to any one of claims 1 to 4.

13. The storage member is a drawer, the magnetic field generating device is positioned at the top of the drawer and has a gap between it and the upper wall of the magnetic field storage chamber. The air intake is provided on the rear wall of the magnetic field preservation chamber and is located between the magnetic field generator and the upper wall of the magnetic field preservation chamber. The refrigerator according to claim 12.

14. Two magnetic field generating devices are arranged in the magnetic field preservation chamber, and the two magnetic field generating devices are arranged on opposite sides of the storage space. A refrigerator according to any one of claims 1 to 4.

15. The magnetic pole distribution directions of the two magnetic field generators are parallel to the arrangement direction of the two magnetic field generators, and the magnetic pole directions of the two magnetic field generators are the same. The refrigerator according to claim 14.

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