Fresh-keeping storage container and refrigerator

Abstract

The invention provides a fresh-keeping storage container and a refrigerator. The fresh-keeping storage container is provided with a fresh-keeping storage space for placing stored objects, and comprises a magnetic field device which comprises one or more magnetic field assemblies and is configured to form a magnetic field in the fresh-keeping storage space; each magnetic field assembly comprises a magnetic source piece and a magnetic conducting plate, the magnetic conducting plate comprises a plane area, the magnetic source piece is attached to the plane area, and the planeness tolerance of the plane area is smaller than a set tolerance threshold value, so that the whole magnetic source piece is tightly attached to the magnetic conducting plate. According to the scheme, by limiting the flatness tolerance of the area, attached to the magnetic source piece, of the magnetic conducting plate, the problem that the fresh-keeping effect is reduced due to the fact that the magnetic field is unstable and uneven is solved, and the requirement of a user for improving the fresh-keeping storage quality is met.

Description

Technical Field

[0001] The invention relates to a refrigeration and freezing storage device, in particular to a fresh-keeping storage container and a refrigerator. Background Art

[0002] The fresh-keeping storage effect of household refrigeration and freezing equipment such as refrigerators has become an important indicator for measuring the performance of such equipment. Ingredients such as fresh meat, fish and shrimp are prone to juice loss during storage, resulting in poor taste and darker color.

[0003] Existing studies have found that magnetic fields have a significant impact on the formation of ice crystals during freezing. Technicians have also tried to apply magnetic field preservation technology in household refrigeration and freezing equipment, but the technical results achieved are not satisfactory. Summary of the invention

[0004] An object of the present invention is to provide a magnetic field fresh-keeping storage container and a refrigerator which can effectively improve the quality of stored materials.

[0005] A further object of the present invention is to form a magnetic field that meets the preservation requirements in the fresh-keeping storage space by closely fitting the magnetic source sheet and the magnetic conductive plate.

[0006] In particular, the present invention provides a fresh-keeping storage container having a fresh-keeping storage space for placing stored objects, and comprising:

[0007] A magnetic field device, comprising one or more magnetic field components, configured to form a magnetic field in the fresh food storage space; and

[0008] Each magnetic field component includes a magnetic source sheet and a magnetic conductive plate, the magnetic conductive plate includes a planar area, and the magnetic source sheet is bonded to the planar area, wherein the flatness tolerance of the planar area is less than a set tolerance threshold, so that the magnetic source sheet as a whole is tightly bonded to the magnetic conductive plate.

[0009] Optionally, the tolerance threshold is set to 1 mm or 0.1 mm or 0.05 mm.

[0010] Optionally, the magnetic conductive plate extends outward around the plane area to form an extension portion; at least a portion of the extension portion protrudes from the plane area toward one side of the magnetic source sheet, so that at least a portion of the extension portion forms a step with the plane area;

[0011] The outer periphery of the magnetic source piece and the step have a set distance.

[0012] Optionally, a protruding height of the protruding section of the extension portion is greater than a thickness of the magnetic source sheet.

[0013] Optionally, the above-mentioned fresh-keeping storage container also includes:

[0014] a barrel having a forward opening;

[0015] A drawer is pullable inside the barrel body; and the magnetic field device includes a first magnetic field component and a second magnetic field component which are arranged in opposite side walls of the barrel body, and the magnetic source sheets in the first magnetic field component and the second magnetic field component are close to the drawer, and the magnetic conductive sheets in the first magnetic field component and the second magnetic field component are located outside the magnetic source sheets.

[0016] Optionally, the first magnetic field component is arranged at the top of the barrel, the second magnetic field component is arranged at the bottom of the barrel, and

[0017] An internal air path for cooling air flow is provided above the magnetic conductive plate of the first magnetic field assembly;

[0018] A protrusion is provided on the top surface of the inner barrel body below the first magnetic field assembly, and the protrusion is used to support the magnetic source sheet of the first magnetic field assembly, so that there is an air gap between the magnetic source sheet of the first magnetic field assembly and the top surface of the inner barrel body.

[0019] Optionally, the protrusions are a plurality of ribs arranged vertically and horizontally, and the size of the air gap is set to 1 mm to 3 mm.

[0020] Optionally, the magnetic field device further comprises:

[0021] Two magnetic field connectors connect the magnetic conductive plates of the first magnetic field assembly and the second magnetic field assembly from the lateral sides of the barrel body.

[0022] Optionally, each magnetic field assembly further comprises:

[0023] The electromagnetic coil is arranged on the side of the magnetic source sheet opposite to the magnetic conductive plate, and

[0024] The magnetic source sheet is a permanent magnetic sheet with uniform magnetization; the magnetic field device is configured to form a magnetic field with an effective magnetic field strength range of 10-100GS and an effective magnetic field spacing range of 60-240mm in the fresh-keeping storage space.

[0025] According to another aspect of the present invention, a refrigerator is provided, comprising any one of the above-mentioned fresh-keeping storage containers.

[0026] The fresh-keeping storage container and refrigerator of the present invention utilize a magnetic field device to form a magnetic field in the storage space. Each magnetic field component includes a magnetic source sheet and a magnetic conductive plate, wherein the magnetic conductive plate includes a planar area, and the magnetic source sheet is attached to the planar area, wherein the flatness tolerance of the planar area is less than the set tolerance threshold, so that the magnetic source sheet as a whole is tightly attached to the magnetic conductive plate. The above-mentioned magnetic source sheet and the magnetic conductive plate are tightly matched with "zero gap", and in view of the in-depth research results of technical personnel in the field of magnetic field preservation technology, by limiting the flatness tolerance of the area where the magnetic conductive plate is attached to the magnetic source sheet, the problem of reduced fresh-keeping effect caused by unstable and uneven magnetic field is solved, and the user's requirements for improving the quality of fresh-keeping storage are met. By limiting the flatness tolerance threshold, this solution can avoid the generation of local hollowing, ensure uniform distribution of the magnetic field, reduce the loss of magnetic field strength, and solve the problem of uneven magnetic field distribution caused by large flatness tolerance.

[0027] Furthermore, the fresh-keeping storage container and refrigerator of the present invention also optimize the matching structure of the magnetic conductive plate and the magnetic source sheet, that is, the magnetic conductive plate extends outward around the plane area to form an extension; at least part of the extension protrudes from the plane area toward one side of the magnetic source sheet, so that at least part of the extension forms a step with the plane area; the periphery of the magnetic source sheet and the step have a set spacing. This matching structure is convenient for fixing the magnetic field assembly with the extension, and on the other hand, it also reduces the space occupied and avoids the interference of the connection and fixing structure on the magnetic field.

[0028] Furthermore, the fresh-keeping storage container and refrigerator of the present invention may also be provided with a magnetic field connector and an electromagnetic coil, so as to further improve the uniformity and stability of the magnetic field.

[0029] Furthermore, the fresh-keeping storage container and refrigerator of the present invention combine the magnetic field fresh-keeping technology with the high-precision and high-stability refrigeration technology, which greatly improves the fresh-keeping effect and prolongs the fresh-keeping storage time.

[0030] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0032] Figure 1 is a schematic diagram of a refrigerator according to an embodiment of the present invention;

[0033] Figure 2 yes Figure 1The refrigerator shown is a schematic diagram with the upper door hidden;

[0034] Figure 3 is a schematic diagram of an air path for supplying refrigeration airflow to a fresh-keeping storage container by a refrigerator according to an embodiment of the present invention;

[0035] Figure 4 is a front view of a fresh-keeping storage container according to an embodiment of the present invention;

[0036] Figure 5 is a schematic diagram of a fresh-keeping storage container according to an embodiment of the present invention from another angle;

[0037] Figure 6 is a schematic diagram of a fresh-keeping storage container according to an embodiment of the present invention from another angle;

[0038] Figure 7 yes Figure 4 A cross-sectional view of the fresh-keeping storage container along the AA direction shown;

[0039] Figure 8 is a schematic diagram of a magnetic field device in a fresh-keeping storage container according to an embodiment of the present invention;

[0040] Fig. 9 yes Figure 8 An exploded view of the components of the magnetic field device shown;

[0041] Fig.10 It is a schematic diagram of the cooperation between the first magnetic conductive plate and the first magnetic source sheet in the fresh-keeping storage container according to one embodiment of the present invention;

[0042] Fig.11 is a schematic diagram of the installation position of a magnetic field connector in a fresh-keeping storage container according to an embodiment of the present invention;

[0043] Fig.12 It is a matching structure of a magnetic field connector and a first magnetic conductive plate in a fresh-keeping storage container according to an embodiment of the present invention and a partial enlarged diagram thereof;

[0044] Fig.13 yes Figure 4 Cross-sectional view along direction BB;

[0045] Fig.14 is a schematic diagram of the top of the inner barrel below the first magnetic source sheet in a fresh-keeping storage container according to an embodiment of the present invention;

[0046] Fig.15 yes Fig.14 A schematic diagram of an angle of the top of the inner barrel shown;

[0047] Fig.16 yes Fig.14A schematic diagram of another angle of the top of the inner barrel shown;

[0048] Fig.17 Schematic diagram of an air guide frame on the top wall of an inner barrel body in a fresh-keeping storage container according to an embodiment of the present invention;

[0049] Fig.18 yes Fig.17 A schematic diagram of a windshield strip at the wind guide frame shown;

[0050] Fig.19 yes Figure 7 The partial enlarged view at E in the middle shows the matching area between the windshield strip and the wind guide frame;

[0051] Fig. 20 It is a schematic diagram of the cooperation between the inner barrel body and the drawer end plate assembly in the fresh-keeping storage container according to one embodiment of the present invention;

[0052] Fig.21 yes Fig. 20 An exploded view of the components shown;

[0053] Fig. 22 is a schematic diagram of a central end plate matching member of a fresh-keeping storage container according to an embodiment of the present invention from one viewing angle;

[0054] Fig.23 is a schematic diagram of another perspective of the end plate matching member of the fresh-keeping storage container according to one embodiment of the present invention;

[0055] Fig.24 is a schematic diagram of a drawer sealing strip in a fresh-keeping storage container according to an embodiment of the present invention;

[0056] Fig.25 is a schematic diagram of the interior of a barrel in a fresh-keeping storage container according to an embodiment of the present invention;

[0057] Fig.26 is a schematic diagram of an internal air path of a fresh-keeping storage container according to an embodiment of the present invention;

[0058] Fig. 27 yes Fig.26 A partial enlarged view of point F in the middle;

[0059] Fig.28 is a schematic diagram of a drawer in a fresh-keeping storage container according to an embodiment of the present invention from one viewing angle;

[0060] Fig.29 is a schematic diagram of a drawer in a fresh-keeping storage container according to an embodiment of the present invention from another perspective;

[0061] Fig.30 is an exploded view of the components of a drawer in a fresh-keeping storage container according to an embodiment of the present invention;

[0062] Fig.31 It is a partial enlarged cross-sectional view of the matching position between the top of the drawer end plate assembly and the top of the front end of the barrel body in a fresh-keeping storage container according to an embodiment of the present invention;

[0063] Fig.32 It is a schematic diagram of the cooperation between the top wall of the drawer end plate assembly and the bottom wall of the transition air duct in a fresh-keeping storage container according to one embodiment of the present invention;

[0064] Fig.33 is a schematic diagram of the bottom of a barrel of a fresh-keeping storage container according to an embodiment of the present invention;

[0065] Fig.34 is a cross-sectional view of a drawer of a fresh-keeping storage container according to an embodiment of the present invention; and

[0066] Fig.35 Schematic diagram of a tray in a drawer of a fresh-keeping storage container according to an embodiment of the present invention. DETAILED DESCRIPTION

[0067] It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present invention, rather than all embodiments of the present invention, and these embodiments are intended to explain the technical principles of the present invention, rather than to limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present invention.

[0068] In the description of the present embodiment, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. For example, except for individual explicit definitions of other orientations, in the present embodiment, the direction from the refrigerator body toward the door body is the front, the direction relative to the door body toward the body is the back, the direction toward the ground on which the refrigerator is installed is the bottom, and the direction opposite to the ground is the top.

[0069] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0070] Furthermore, it should be noted that, in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] Figure 1 is a schematic diagram of a refrigerator 10 according to an embodiment of the present invention; Figure 2 yes Figure 1 The refrigerator 10 shown is a schematic diagram after the upper door 11 is hidden. The refrigerator of this embodiment generally includes a box body 12, a door body 11, and a refrigeration system (not shown in the figure). The box body 12 may define at least one storage compartment with an open front side, usually multiple, such as a refrigerated storage compartment 121, a frozen storage compartment, a variable temperature storage compartment, etc. The number and function of the specific storage compartments can be configured according to pre-determined requirements. Figure 1 and Figure 2 The cross-door refrigerator shown is only an example, and those skilled in the art can configure the specific number, function and layout of the storage compartments according to needs.

[0072] The refrigerator 10 of this embodiment may be an air-cooled refrigerator. Figure 3 1 is a schematic diagram of an air path for supplying refrigeration airflow to a fresh-keeping storage container 30 by a refrigerator 10 according to an embodiment of the present invention. Figure 3 In order to show the refrigeration duct assembly 210, other components in the refrigeration storage compartment 121 except the fresh-keeping storage container and the refrigeration duct assembly 210 are hidden, such as the refrigeration liner, the compartment insulation layer, etc. An air duct system is arranged in the box body, and the refrigeration air flow that has been heat exchanged by the heat exchanger (evaporator, not shown in the figure) is sent to the storage compartment through the air supply port by the fan 131, and then returns to the air duct through the return air port. Refrigeration is achieved. Since the box body, door body, and refrigeration system of this type of refrigerator are well known to those skilled in the art and easy to implement, in order not to cover up and blur the invention points of this application, the box body, door body, and refrigeration system themselves will not be described in detail below.

[0073] Multiple storage rooms can be spatially divided by racks, shelves, drawers, etc. to achieve corresponding storage functions, such as chilled, frozen, dry storage, etc. One or more fresh-keeping storage containers 30 can be arranged in the refrigerator 10 of this embodiment. In some optional embodiments, the fresh-keeping storage container 30 can be arranged in one or more of the above-mentioned multiple storage rooms, and the long-term high-quality cold preservation of food materials such as meat and fish can be achieved through magnetic field and temperature control. For example, the fresh-keeping storage container 30 can be arranged in any one of the refrigerated storage room 121, the frozen storage room, and the variable temperature storage room. For another example, the fresh-keeping storage container 30 can also be arranged in multiple of the refrigerated storage room 121, the frozen storage room, and the variable temperature storage room at the same time, that is, the fresh-keeping storage container 30 is respectively arranged in multiple different storage rooms at the same time. For another example, multiple fresh-keeping storage containers 30 can also be arranged in a storage room at the same time as needed. Figure 2 The example of setting a fresh-keeping storage container 30 in the refrigerated storage compartment 121 is shown. The fresh-keeping storage container 30 may be a drawer-type storage container. In addition to the fresh-keeping storage container 30, other drawer-type storage containers 122 may be set in the refrigerated storage compartment 121, such as Figure 2 In addition to the fresh-keeping storage container 30 , the refrigerated storage compartment 121 is also provided with three other examples of drawer-type storage containers 122 , one of which is arranged in parallel with the fresh-keeping storage container 30 .

[0074] The refrigerator 10 of this embodiment achieves the effect of fresh-keeping storage by combining the precise temperature control of the fresh-keeping storage container 30 with the influence of the magnetic field. In order to achieve precise temperature control, the air duct system of the refrigerator of this embodiment can provide a special fresh-keeping container air supply channel 211 for the fresh-keeping storage container 30. By adjusting the fresh-keeping container air supply channel 211, the on / off and / or size control of the refrigeration airflow of the fresh-keeping storage container 30 can be achieved.

[0075] The refrigerator 10 can be an air-cooled refrigerator, and an air duct assembly is provided at the rear of the box body 12, and the air duct assembly is used to define an air supply duct that provides a refrigerated airflow. In some optional embodiments, a refrigerated air duct assembly 210 is provided at the back of the refrigerated storage compartment 121. A refrigerated air supply fan 212 is provided in the refrigerated air duct assembly 210, and the refrigerated air supply fan 212 promotes the formation of a refrigerated air flow from the evaporator cavity where the evaporator of the refrigerator 10 is located to the storage compartment through the air supply duct. The fresh-keeping container air supply channel 211 is one of the multiple air supply ducts provided by the refrigerated air duct assembly 210, and the on-off and / or size of its airflow can be controlled and adjusted. For example, an independent adjustable damper can be provided in the fresh-keeping container air supply channel 211; for another example, the refrigerated air duct assembly 210 is provided with other types of air flow distribution devices, and the airflow of the fresh-keeping container air supply channel 211 can be controlled and adjusted.

[0076] Figure 3 The refrigerated air duct assembly 210 shown can use a centrifugal fan as the refrigerated air supply fan 212. The refrigerated air supply fan 212 sucks low-temperature air in the evaporation chamber from the rear, and then uses an air flow distribution device (not shown in the figure) to distribute the refrigerated air flow, wherein the fresh-keeping container air supply channel 211 can be controlled to adjust the opening and closing and size.

[0077] Figure 4 is a front view of a fresh-keeping storage container 30 according to an embodiment of the present invention, Figure 5 FIG. 2 is a schematic diagram of a fresh-keeping storage container 30 according to an embodiment of the present invention from another angle. Figure 6 FIG. 2 is a schematic diagram of a fresh-keeping storage container 30 according to another embodiment of the present invention. Figure 6 In order to show the inter-barrel return air section 345 , the rear wall of the barrel outer shell is hidden, and an inner barrel return air port 346 is provided on the rear wall of the inner barrel body below the barrel return air port 317 .

[0078] The fresh-keeping storage container 30 may be a drawer-type structure. The fresh-keeping storage container may include a barrel 310 and a drawer 320. The barrel 310 is box-shaped as a whole and has a forward opening, that is, the barrel 310 includes a barrel top wall 311, a barrel bottom wall 312, a barrel rear wall 313, a barrel left side wall 314, and a barrel right side wall 315. The drawer 320 is pullably arranged inside the barrel 310 through the forward opening. The drawer 320 includes a drawer bottom plate 322, a drawer rear plate 323, a drawer left side plate 324, a drawer right side plate 325, and a drawer end plate assembly 321, wherein the drawer end plate assembly 321 is arranged at the front of the drawer 320. When the drawer 320 is placed in the barrel 310, the drawer end plate assembly 321 can seal the forward opening of the barrel 310, so that a closed storage environment is formed inside the barrel 310, so that the drawer 320 and the barrel 310 jointly define a fresh-keeping storage space 330. When the drawer 320 is pulled out of the barrel body 310, the drawer 320 reveals the space at the top for taking out and placing stored items.

[0079] The rear part of the barrel top wall 311 near the barrel rear wall 313 is provided with a barrel air outlet 316 connected to the fresh-keeping container air supply channel 211. The area of ​​the barrel top wall 311 where the barrel air outlet 316 is located can be set to have a certain inclination angle so as to cooperate with the fresh-keeping container air supply channel 211. The barrel return air outlet 317 is arranged on one side of the barrel air outlet 316 and is spaced from the barrel air outlet 316. In some embodiments, the barrel return air outlet 317 can be connected to the space of the refrigerated storage compartment 121 outside the fresh-keeping storage container, or the barrel return air outlet 317 can be connected to the return air area of ​​the evaporator chamber. The airflow of the fresh-keeping storage container after heat exchange can be sent back to the return air area of ​​the refrigerated storage compartment 121 through the barrel return air outlet 317, and the airflow circulation is completed by using the return air passage from the refrigerated storage compartment 121 to the evaporator cavity of the refrigerator. Alternatively, the refrigerator may also be provided with a fresh-keeping container return air channel 213 connected to the barrel return air port 317, so as to directly send the airflow of the fresh-keeping storage container 30 after heat exchange back to the evaporation chamber. The fresh-keeping storage container may preferably adopt a structure in which the fresh-keeping container return air channel 213 is connected to the barrel return air port 317 and the evaporator chamber, so as to realize independent air supply and refrigeration of the fresh-keeping storage container 30.

[0080] The inclination direction of the barrel top wall 311 region where the barrel air supply port 316 and the barrel air return port 317 are located is from the top to the bottom along the front-to-back direction of the barrel 310, and this inclination makes it easier to assemble the fresh-keeping storage container 30 with the refrigerator. In addition, the barrel air supply port 316 allows for smoother air intake.

[0081] A necessary condition for the fresh-keeping storage container 30 to achieve long-term fresh-keeping storage is to maintain the temperature in the fresh-keeping storage space 330 within the set fresh-keeping temperature range, and the refrigeration process will not be too low or too high, especially the temperature of each area of ​​the fresh-keeping storage space 330 is uniform. In some embodiments, the fresh-keeping temperature range can be set at -2°C to 1°C, for example, it can be set to -2°C to 0°C. The stored objects can avoid being frozen and maintain the most suitable fresh-keeping temperature. Those skilled in the art can set the fresh-keeping temperature range according to the specific state of the stored objects, and the above specific numerical range is only for example.

[0082] However, the temperature of the refrigeration airflow supplied from the evaporator chamber of the refrigerator 10 is generally low, which may be below minus ten degrees Celsius. The refrigeration airflow directly contacts the stored objects, which will obviously cause the stored objects to be overcooled and freeze or have their tissues damaged, affecting the fresh-keeping storage effect. In addition, the refrigeration airflow cannot flow evenly through the entire storage space, which will cause the temperature of the fresh-keeping storage space 330 to be uneven, and will also cause the fresh-keeping storage effect to decrease. The fresh-keeping storage container 30 of this embodiment optimizes the internal air path structure to prevent the refrigeration airflow from entering the fresh-keeping storage space 330 and contacting the stored objects, thereby ensuring that the temperature inside the fresh-keeping storage space 330 is stable and uniform.

[0083] Figure 7 yes Figure 4 The sectional view of the fresh-keeping storage container 30 along the AA direction is shown. Figure 7 The direction of the arrow in FIG. 3 is the internal airflow direction of the fresh-keeping storage container 30 .

[0084] The air path inside the fresh-keeping storage container 30 is configured as follows: the airflow enters the rear end of the air supply section 341 (also referred to as the top wall air path section) of the air path inside the fresh-keeping storage container 30 defined in the top wall of the barrel body from the barrel body air supply port 316, and then the airflow flows through the air supply section 341 from back to front. At the front end of the air supply section 341, the airflow enters the top of the wind section 342 (also referred to as the end plate wind path section) of the air path inside the fresh-keeping storage container 30 defined in the drawer end plate assembly 321, and then the airflow flows through the wind section 342 from top to bottom. At the bottom end of the wind section 342, the airflow enters the gap between the drawer bottom plate 322 and the barrel body bottom wall 312, which serves as the cold transmission section 343 (also referred to as the bottom wall wind path section) of the air path inside the fresh-keeping storage container 30, and then the airflow flows through the first cold transmission section 343 from front to back. At the connection position between the rear end of the drawer bottom plate 322 and the drawer rear plate 323 (i.e., the rear end of the cold transmission section 343), the airflow enters the gap between the drawer rear plate 322 and the barrel body rear wall 313, which can be used as the barrel inner return air section 344 (also called the rear wall air path section). The middle of the barrel body rear wall 313 is provided with an inner barrel body return air port 346, and the barrel body rear wall 313 forms an inter-barrel return air section 345 from the inner barrel body return air port 346 to the barrel body return air port 317. The airflow finally reaches the barrel body return air port 317 from the inner barrel body return air port 346 via the inter-barrel return air section 345.

[0085] The internal air path of the above-mentioned fresh-keeping storage container 30 surrounds the entire fresh-keeping storage container 30. Without entering the fresh-keeping storage space 330 and thus not directly contacting the stored objects, sufficient heat exchange can be achieved to evenly cool the fresh-keeping storage container 30.

[0086] In addition, the internal air path of the above-mentioned fresh-keeping storage container 30 is also suitable for the temperature characteristics of the refrigeration airflow. During the flow process, the refrigeration airflow gradually exchanges heat and its own temperature gradually increases. The airflow temperature of the air supply section 341 is the lowest, and the air supply section 341 is formed inside the interlayer of the barrel top wall 311, and the cold energy is conducted downward from the barrel top wall 311. The distance between the stored objects and the barrel top wall 311 is relatively far, and the heat transfer efficiency is the worst. In the wind section 342, the heat transfer efficiency of the drawer end plate assembly 321 is also weaker than that of the drawer bottom plate 322. The gap between the drawer bottom plate 322 and the barrel bottom wall 312 is used as the cold transfer section 343, and the cold energy exchanges heat with the drawer bottom plate 322, and its heat exchange efficiency is the highest. In other words, as the air flow temperature increases, the heat exchange efficiency of each air path section is relatively improved, which makes the temperature of each position of the fresh-keeping storage space 330 roughly the same. The solution of this embodiment realizes an independent surrounding air supply mode in the sealed fresh-keeping storage container 30, thereby ensuring the temperature conditions required for fresh-keeping storage.

[0087] In other optional embodiments, the internal air path of the fresh-keeping storage container 30 may also adopt other surrounding methods, such as from the left side to the front, from the front of the drawer to the right side, and then from the right side back to the back side, that is, horizontally surrounding the fresh-keeping storage container 30. In comparison, the internal air path that vertically surrounds the fresh-keeping storage container 30 in the previous embodiment has a better cooling effect.

[0088] In order to improve the refrigeration efficiency, the existing refrigerators are sealed drawers, and generally need to send the refrigeration airflow into the space inside the drawer. Even in order to avoid local overcooling caused by direct current blowing, the technical means generally used are to use holes with smaller apertures to send air into the drawer or to set up a special air guide channel inside the drawer. The fresh-keeping storage container 30 of this embodiment creatively proposes a solution of using a surrounding wind path to achieve indirect refrigeration instead of sending the refrigeration airflow into the fresh-keeping storage space 330, which better combines the magnetic field to improve the fresh-keeping effect and overcome the existing technical prejudices of those skilled in the art.

[0089] The fresh-keeping storage container 30 of this embodiment, the barrel body 310 includes a barrel shell and an inner barrel body arranged inside the barrel shell. The barrel shell serves as the outermost layer of the fresh-keeping storage container 30, and a part of the barrel shell can utilize the chamber structural components in the refrigerated storage compartment 121. For example, when the fresh-keeping storage container 30 is arranged at the bottom of the refrigerated storage compartment 121, the bottom plate of the barrel shell can utilize the bottom wall of the refrigerated storage compartment 121. In addition, the top plate of the barrel shell can extend laterally to serve as the top plate of other drawer-type storage containers 122 arranged laterally parallel to the fresh-keeping storage container 30. The inner barrel body can be formed by splicing a plurality of liner components by snap-fitting or other connection methods. For example, the liner components can be split into three to four liner components according to the convenience of assembly. The inner barrel body serves as the barrel body part where the drawer is arranged.

[0090] Another necessary condition for the fresh-keeping storage container 30 to achieve long-term fresh-keeping storage is to apply a magnetic field for fresh-keeping in the fresh-keeping storage space 330. After in-depth research on the fresh-keeping effect, the magnetic field parameters of the fresh-keeping storage container 30 of this embodiment are preferably configured as an effective magnetic field strength range: 10-100GS (1-10mT), which can be further set to 20-80GS, and further set to 40GS-60GS, such as 10GS, 20GS, 40GS, 60GS, 80GS, 100GS, etc., and the effective magnetic field spacing range: 60-240mm, that is, the magnetic field can reach the above-mentioned strength requirements within a distance range of 60mm to 240mm from the magnetic source component.

[0091] Figure 8 is a schematic diagram of a magnetic field device 410 in a fresh-keeping storage container 30 according to an embodiment of the present invention, Fig. 9 yes Figure 8 The magnetic field device 410 is an exploded view of the components. The magnetic field device 410 may include a first magnetic field component 411 and a second magnetic field component 421 disposed opposite to each other. In some embodiments, a magnetic field connector 431 connecting the first magnetic field component 411 and the second magnetic field component 421 may be further provided.

[0092] The first magnetic field assembly 411 and the second magnetic field assembly 421 are arranged opposite to each other, and can be respectively arranged in opposite sides of the barrel body 310 of the fresh-keeping storage container 30, for example, respectively arranged in the barrel body top wall 311 and the barrel body bottom wall 312, or in the barrel body left side wall 314 and the barrel body right side wall 315. In the embodiment where the fresh-keeping storage container 30 uses a drawer-type structure, the distance between the barrel body top wall 311 and the barrel body bottom wall 312 is smaller and the area is larger, and the first magnetic field assembly 411 and the second magnetic field assembly 421 are preferably arranged on the barrel body top wall 311 and the barrel body bottom wall 312.

[0093] The first magnetic field component 411 and the second magnetic field component 421 can adopt a basically similar structure. For example, the first magnetic field component 411 can include a first magnetic source sheet 414 and a first magnetic conductive plate 413. In some embodiments, the first magnetic field component 411 can be further provided with a first electromagnetic coil 415. Correspondingly, the second magnetic field component 421 can include a second magnetic source sheet 424 and a second magnetic conductive plate 423. In some embodiments, a second electromagnetic coil 425 can be further provided in the second magnetic field component 421.

[0094] The first magnetic source sheet 414 and the second magnetic source sheet 424 can be permanent magnet sheets that are uniformly magnetized. Considering the coordination with the first magnetic conductive plate 413 and the second magnetic conductive plate 423, the permanent magnet sheets can be made of permanent magnet materials with certain flexibility. For example, a rubber magnet sheet with flexibility made by a composite of bonded ferrite powder and synthetic rubber and a calendering molding process can be used.

[0095] The magnetization intensity of the first magnetic source sheet 414 and the second magnetic source sheet 424 is required to meet the above-mentioned magnetic field with an effective magnetic field intensity range of 10-100 GS (1-10 mT) and an effective magnetic field spacing range of 60-240 mm in the fresh-keeping storage space 330. The magnetic field directions of the first magnetic source sheet 414 and the second magnetic source sheet 424 are set to be perpendicular to their own surfaces respectively.

[0096] The first magnetic conductive plate 413 and the second magnetic conductive plate 423 are made of materials with low coercive force and high magnetic permeability. The area of ​​the first magnetic conductive plate 413 can be slightly larger than the first magnetic source sheet 414, and the area of ​​the second magnetic conductive plate 423 can be slightly larger than the second magnetic source sheet 424. The area where the first magnetic conductive plate 413 contacts the first magnetic source sheet 414 and the surface of the first magnetic source sheet 414 are configured to have a flatness that meets the requirements, for example, the tolerance threshold of the flatness is as small as possible, for example, less than 1mm, or less than 0.1mm, or less than 0.05mm. By limiting the flatness, after the first magnetic conductive plate 413 and the first magnetic source sheet 414 are matched, the two can fit tightly to achieve zero gap matching, thereby improving the uniformity of the magnetic field.

[0097] Similarly, the area where the second magnetic conductive plate 423 contacts the second magnetic source sheet 424 and the surface of the second magnetic source sheet 424 are configured to have a flatness that meets the requirements, for example, the tolerance threshold of the flatness is as small as possible, for example, less than 1 mm, or less than 0.1 mm, or less than 0.05 mm. By limiting the flatness, after the second magnetic conductive plate 423 and the second magnetic source sheet 424 are matched, the two can fit tightly to achieve zero gap matching, thereby improving the uniformity of the magnetic field. After testing, the first magnetic conductive plate 413 can adjust the magnetic field distribution of the first magnetic source sheet 414, and the second magnetic conductive plate 423 can adjust the magnetic field distribution of the second magnetic source sheet 424, thereby making the magnetic field more uniform and expanding the coverage of the magnetic field.

[0098] When the flatness tolerance is large, especially when it is greater than or equal to 1mm, it will cause local hollowing of the magnetic plate and the magnetic source sheet. Local hollowing causes a gap to appear between the magnetic plate and the magnetic source sheet, and the gap will produce magnetic resistance. Magnetic resistance further leads to uneven magnetic field distribution and loss of magnetic field strength. The scheme of this embodiment, by limiting the flatness tolerance threshold to 1mm, can avoid the occurrence of local hollowing, thereby avoiding the increase of magnetic resistance in local areas, effectively reducing the loss of magnetic field strength, and ensuring uniform distribution of the magnetic field. Furthermore, in some embodiments, limiting the flatness tolerance threshold to 0.1mm or even 0.05mm can achieve better technical effects in this regard.

[0099] In some embodiments, the surfaces of the first magnetic conductive plate 413 and the second magnetic conductive plate 423 may be electroplated to form an anti-corrosion layer to meet the requirements of long-term use inside the refrigerator. The anti-corrosion layer is required to have a uniform thickness and not affect the coordination between the first magnetic conductive plate 413 and the first magnetic source sheet 414. The first magnetic conductive plate 413 and the second magnetic conductive plate 423 may also be treated with a UV coating for anti-corrosion.

[0100] In some embodiments, a magnetic adhesive may be coated between the first magnetic source sheet 414 and the first magnetic conductive plate 413, and between the second magnetic source sheet 424 and the second magnetic conductive plate 423 to achieve better adhesion between the two. The magnetic adhesive may be silicone magnetic adhesive or epoxy magnetic adhesive.

[0101] Fig.10 Schematic diagram of the cooperation between the first magnetic conductive plate 413 and the first magnetic source sheet 414 in the fresh-keeping storage container 30 according to an embodiment of the present invention. The first magnetic conductive plate 413 extends outward around the plane area corresponding to the first magnetic source sheet 414 to form an extension portion 4131. The extension portion 4131 and the plane area (or plane main body) where the first magnetic conductive plate 413 and the first magnetic source sheet 414 abut against each other form a step surface. In other words, the edges of the first magnetic conductive plate 413 protrude toward one side of the first magnetic source sheet 414. The first magnetic source sheet 414 fits in the central area defined by the protruding extension portion 4131. The extension portion 4131 protrudes toward one side of the first magnetic source sheet 414, and is used to cooperate with the barrel body and / or the magnetic field connector 431 as a connecting component of the first magnetic conductive plate 413. There is a certain distance D (e.g., 1-3 mm) between the outer periphery of the first magnetic source sheet 414 and the step surface of the extension portion 4131, that is, the first magnetic source sheet 414 is only attached to the first magnetic conductive plate 413 through one side surface, and the outer periphery is not in contact with the first magnetic conductive plate 413, forming a magnetic gap. This ensures that the magnetic field of the first magnetic source sheet 414 can affect the fresh-keeping storage space 330 as evenly as possible, and will not be distorted at the edge due to the first magnetic conductive plate 413.

[0102] The protruding height of the extension part 4131 can be greater than the thickness of the first magnetic source sheet 414. For example, in a specific embodiment, when the thickness of the first magnetic source sheet 414 is 3 mm, the protruding height of the extension part 4131 can be about 10 mm. That is, the first magnetic source sheet 414 is assembled after the first magnetic conductive plate 413. The first magnetic conductive plate 413 faces the side of the first magnetic source sheet 414, and the extension part 4131 is used to make the first magnetic field component 411 still form a concave surface, and the concave surface can form a certain air gap with the top surface of the relative inner tank. By using this air gap, the coldness of the refrigeration airflow can be prevented from being directly transferred to the fresh-keeping storage space 330. In other words, an air gap is formed between the first magnetic field component 411 and the inner tank to prevent the top surface of the barrel from transferring heat too quickly.

[0103] In order to reduce the weight of the magnetic field storage container and save the occupied space, the thickness of the first magnetic conductive plate 413 is required to be as thin as possible, but considering that the first magnetic conductive plate 413 is required to achieve a uniform distribution of the magnetic field, the thickness of the first magnetic conductive plate 413 and the second magnetic conductive plate 423 can be configured to be not less than 3 mm, that is, greater than or equal to 3 mm. The thickness of the first magnetic source sheet 414 and the second magnetic source sheet 424 can be no more than 8 mm, that is, less than or equal to 8 mm.

[0104] The second magnetic field component 421 is substantially the same in structure as the first magnetic field component 411, that is, the second magnetic conductive plate 423 is substantially the same in shape, structure, and parameters as the first magnetic conductive plate 413, and the second magnetic source sheet 424 is substantially the same in shape, structure, and parameters as the first magnetic source sheet 414. In some embodiments, the second magnetic field component 421 is substantially opposite to the first magnetic field component 411, and a small offset may exist therebetween, taking into account the structure and size of the opposite sides of the fresh-keeping storage container 30. That is, the projection surfaces of the second magnetic field component 421 and the first magnetic field component 411 are not required to completely overlap. For example, in some embodiments, the bottom surface area of ​​the fresh-keeping storage container 30 is slightly larger than the top surface area, and the size of the second magnetic field component 421 may also be slightly larger than the first magnetic field component 411.

[0105] The first magnetic field component 411 and the second magnetic field component 421 can respectively cover the corresponding side surfaces of the fresh-keeping storage space 330. In the embodiment where the first magnetic field component 411 and the second magnetic field component 421 are respectively arranged on the top surface and the bottom surface of the fresh-keeping storage container 30, the first magnetic field component 411 can cover the top surface of the fresh-keeping storage space 330, and the second magnetic field component 421 can cover the bottom surface of the fresh-keeping storage space 330. The magnetic field directions of the first magnetic source sheet 414 and the second magnetic source sheet 424 can be set to be the same, that is, the relative magnetic poles of the first magnetic source sheet 414 and the second magnetic source sheet 424 are opposite magnetic poles, which can further ensure the uniformity of the magnetic field.

[0106] In some embodiments of the present invention, the magnetic field device 410 may further be provided with a magnetic field connector 431. The magnetic field connector 431 connects the first magnetic field assembly 411 and the second magnetic field assembly 421 from both sides. The magnetic field connector 431 may be made of the same material as the first magnetic conductive plate 413 and the second magnetic conductive plate 423. In the embodiment where the first magnetic field assembly 411 and the second magnetic field assembly 421 are respectively arranged on the top surface and the bottom surface of the fresh-keeping storage container 30, the magnetic field connector 431 may be arranged on the left side and the right side of the fresh-keeping storage container 30, respectively, with the top thereof connected to the first magnetic field assembly 411 and the bottom thereof connected to the second magnetic field assembly 421. The first magnetic field assembly 411, the second magnetic field assembly 421 and the magnetic field connectors 431 on both sides form an outer magnetic conductive path surrounding the fresh-keeping storage container 30, and the fresh-keeping storage space 330 between the first magnetic field assembly 411 and the second magnetic field assembly 421 forms an internal magnetic field. The outer magnetic conductive path provides a closed path for the magnetic lines of force of the internal magnetic field, thereby concentrating the magnetic field and improving the uniformity of the internal magnetic field. At the same time, it can reduce the release of the magnetic field to the outside of the fresh-keeping storage container 30 and reduce interference with other external components (for example, avoiding magnetization of other components, etc.).

[0107] The magnetic field connector 431 is required to be able to meet the requirements of the aggregated external magnetic field. Generally speaking, the magnetic field connector 431 is connected to the central position of the first magnetic field assembly 411 and the second magnetic field assembly 421. The magnetic field connector 431 on each side can be one or more. The accompanying drawings show an embodiment in which a magnetic field connector 431 is arranged in the center of the front and rear positions of the first magnetic field assembly 411 and the second magnetic field assembly 421. Alternatively, multiple magnetic field connectors 431 can be arranged at intervals along the front and rear directions of the magnetic field preservation container 30.

[0108] In other embodiments, the magnetic field connector 431 may also be disposed at the rear of the magnetic field preservation container 30. Those skilled in the art may set the number and position of the magnetic field connector 431 as required.

[0109] The thickness of the thinnest section of each magnetic field connector 431 can be set to be less than or equal to 4 mm and greater than or equal to 0.5 mm. For example, it can be set to 4 mm, 3 mm, 2 mm, 1 mm, 0.5 mm. Furthermore, the thickness range of the magnetic field connector 431 can be set to 0.8 mm to 3 mm, for example, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 2 mm, 3 mm. In some embodiments, each magnetic field connector 431 can have a consistent thickness as a whole.

[0110] The width of the narrowest section of each magnetic field connector 431 is recorded as W1', and the width W1' can be set to be greater than or equal to 5% of the side length W2 of the first magnetic conductive plate 413 or the second first magnetic conductive plate 423 connected thereto, and less than or equal to 75% of W2. In other words, the width of the magnetic field connector 431 needs to be greater than or equal to 5% of the side length of the first magnetic conductive plate 413 or the second first magnetic conductive plate 423, and less than or equal to 75% of the side length of the magnetic field assembly. For example, it can be set to 5%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, 60%, 70%, 75%, etc. Further, in some embodiments, the width W1' of the magnetic field connector 431 can be approximately 20% to 30% of the side length of the first magnetic conductive plate 413 or the second first magnetic conductive plate 423. The magnetic field connector 431 can have a uniform width as a whole.

[0111] The thickness and width of the magnetic field connector 431 are coordinated to achieve reliable magnetic connectivity of the external magnetic circuit of the fresh-keeping storage space.

[0112] Fig.11 : is a schematic diagram of the installation position of the magnetic field connector 431 in the fresh-keeping storage container 30 according to an embodiment of the present invention. The width of the magnetic field connector 431 (that is, the dimension along the front-to-back direction of the fresh-keeping storage container 30) can be one-fourth to one-third of the dimension of the first magnetic field assembly 411 in the front-to-back direction, and its thickness can be substantially consistent with the first magnetic conductive plate 413. The upper end of the magnetic field connector 431 passes through the long strip hole 3183 opened on the top edge of the side of the inner barrel 318, extends downward from the side of the inner barrel 318, and the lower end of the magnetic field connector 431 passes through the long strip hole opened on the bottom edge of the side of the inner barrel 318. The middle part of the magnetic field connector 431 can be fixed to the barrel body by using the connector 4313 (for example, the matching structure of the screw screw hole), which improves the reliability and stability of the structure. The insulation layer on both sides of the barrel body 310 can open corresponding grooves in the magnetic field connector 431 to accommodate the magnetic field connector 431. That is to say, the left side wall 314 of the barrel body and the right side wall 315 of the barrel body respectively form a sandwich structure, and the thermal insulation layer and the magnetic field connector 431 are arranged in the sandwich.

[0113] Fig.12The figure is a matching structure of a magnetic field connector 431 and a first magnetic conductive plate 413 in a fresh-keeping storage container 30 according to an embodiment of the present invention and a partial enlarged diagram thereof. When the first magnetic conductive plate 413 is connected to the magnetic field connector 431, the extension 4131 may not protrude, forming a clearance gap 4132. That is, at the position of the clearance gap 4132, the extension 4131 is flush with the main body of the central area of ​​the first magnetic conductive plate 413, or the protrusion height is less than other positions of the extension 4131. The magnetic field connector 431 forms a flange 4311 facing the first magnetic conductive plate 413 at the top, and the flange 4311 is used to reliably contact the position of the gap 4132 of the first magnetic conductive plate 413 to form a reliable magnetic connection. The flange 4311 of the magnetic field connector 431 can be fixed by means of screws, screw holes, etc. to ensure a firm connection. The flange 4311 of the magnetic field connector 431 is also required to have a certain gap from the side of the first magnetic source sheet 414 to form a magnetic gap. By utilizing the above-mentioned gap, after the magnetic field connector 431 is connected to the first magnetic conductive plate 413 , the magnetic field connector 431 will not affect the connection between the first magnetic conductive plate 413 and the barrel body 310 in the thickness direction.

[0114] The flange 4311 of the magnetic field connector 431 uses the side away from the inside of the fresh-keeping storage space 330 to contact the side of the extension 4131 close to the inside of the fresh-keeping storage space 330. For example, the first magnetic source sheet 414 can be attached to the lower surface of the first magnetic conductive plate 413, and the top flange 4311 of the magnetic field connector 431 uses the upper surface to abut the lower surface of the extension 4131 of the first magnetic conductive plate 413. In some embodiments, the size of the contact area between the flange 4311 and the extension 4131 along the extension direction of the flange 4311 can range from 1 to 10 mm. For the magnetic circuit, in theory, the larger the contact area between the flange 4311 and the extension 4131, the more conducive it is to the conduction of the magnetic circuit, but as the contact area increases, the favorable effect on the magnetic circuit will gradually decrease, and it will take up more space. In the solution of this embodiment, the size of the above-mentioned contact area can be set to a range of 1 to 10 mm, in particular, it can be set to 3-8 mm, such as 3 mm, 5 mm, 6 mm, 8 mm, and in particular 6 mm. Thereby, the need for magnetic field strength is met and the space occupation can be minimized. The flange 4311 of the magnetic field connector 431 uses the side away from the inside of the fresh-keeping storage space 330 to conflict with the side of the extension 4131 close to the inside of the fresh-keeping storage space 330. The cross-sectional area of ​​each magnetic field connector 431 can be greater than or equal to the area of ​​the contact area. The cross-sectional area of ​​the magnetic field connector 431 is the product of the width and thickness of the magnetic field connector 431, which is related to the flux capacity of the magnetic field connector 431. The cross-sectional area of ​​each magnetic field connector 431 can be greater than or equal to the area of ​​the contact area, so that the flux capacity of the magnetic field connector 431 can ensure sufficient flux capacity.

[0115] Similarly, the lower end of the magnetic field connector 431 may also be connected to the second magnetic conductive plate 423 using the same connection structure.

[0116] In some embodiments of the present embodiment, in order to improve the magnetic field strength, the first magnetic field component 411 and the second magnetic field component 421 may further be provided with electromagnetic coils 415 and 425, and the electromagnetic coils 415 and 425 are respectively located on the inner side of the first magnetic source sheet 414 and the second magnetic source sheet 424. The electromagnetic coils 415 and 425 may be wound into a flat ring shape by copper wire, and the number of turns of the copper wire may be set according to the magnetic field requirements and the structural dimensions. In some embodiments, the first electromagnetic coil 415 and the second electromagnetic coil 425 may be respectively located at the central position of the first magnetic source sheet 414 and the second magnetic source sheet 424, and the magnetic pole direction of the magnetic field formed after power-on is consistent with the first magnetic source sheet 414 and the second magnetic source sheet 424 that are adjacent.

[0117] Fig.13 yes Figure 4The cross-sectional view along the BB direction shows the structure of the air supply section 341 in the fresh-keeping storage container 30. The first magnetic conductive plate 413 forms a complete and continuous surface, which can be used as the lower wall of the air supply section 341. The top plate of the barrel shell and the first magnetic conductive plate 413 form a top interlayer of the barrel body. The top insulation layer 3111 is arranged in the top interlayer of the barrel body. The above-mentioned shape of the air supply section 341 is constructed using the top insulation layer 3111. For example, the top insulation layer 3111 is provided with an air duct that gradually widens from the barrel body air supply port 316 to the sides along the air supply direction from the front to the back. That is, the lateral width of the rear end of the air supply section 341 is substantially consistent with the barrel body air supply port 316; the lateral width of the front end of the air supply section 341 is only slightly smaller than the overall width of the storage container 30. The lateral sides of the air supply section 341 form a continuous and gentle air guide surface. In the central area of ​​the air supply section 341, the top insulation layer 3111 forms one or more diverter ribs 3112, 3113, 3114, and the diverter ribs 3112, 3113, 3114 are used to further divide the refrigeration airflow into multiple streams, so that the airflow flows evenly through the barrel top wall 311, ensuring that the temperature of the top space of the fresh-keeping storage container 30 is uniform. The rear ends of the diverter ribs 3112, 3113, 3114 face the barrel air supply port 316 respectively, and then extend according to the overall shape of the air supply section 341. The diverter ribs 3112, 3113, 3114 divide the air supply section 341 into multiple airflow channels, and are configured so that the airflow flowing through each airflow channel is substantially the same. The opening of the air flow channel toward the barrel air outlet 316 is configured to have different sizes according to the air flow velocity. For example, the air flow channel near the center facing the barrel air outlet 316 is narrower, while the air flow channels near the two sides are wider. The air flow size in the different air flow channels is adjusted by adjusting the size of the entrance of the different air flow channels. In addition, the extension length and extension direction of the diverter ribs 3112, 3113, 3114 can also be allocated according to the air flow distribution needs.

[0118] Fig.13The embodiment of setting three diverter ribs 3112, 3113, 3114 is shown in the figure. Those skilled in the art can adjust the number and extension direction of the diverter ribs as needed to ensure that the refrigeration airflow can pass through the top wall of the barrel body evenly. The diverter rib 3112 in the center facing the barrel body air outlet 316 among the three diverter ribs 3112, 3113, 3114 has the longest length toward the barrel body air outlet 316. The airflow is first divided into two airflows on the left and right, and then the two diverter ribs 3113, 3114 on both sides are used to further divert the airflow. That is to say, one end of each of the first diverter rib 3112, the second diverter rib 3113, and the third diverter rib 3114 is respectively facing the barrel body air outlet 316, and extends in the direction of the drawer end plate assembly. The first diverter rib 3112 is directly opposite to the barrel body air outlet 316, and the second diverter rib 3113 and the third diverter rib 3114 are respectively located on the lateral sides of the first diverter rib 3112. The end of the first diverter rib 3112 facing the barrel air outlet 316 is closer to the barrel air outlet 316 than the ends of the second diverter rib 3113 and the third diverter rib 3114 facing the barrel air outlet 316. That is, the cooling airflow is first diverted by the first diverter rib 3112, and then further diverted by the second diverter rib 3113 and the third diverter rib 3114.

[0119] Fig.14 3 is a schematic diagram of the top of the inner barrel 318 below the first magnetic source sheet 414 in the fresh-keeping storage container 30 according to an embodiment of the present invention. Fig.15 and Fig.16 yes Fig.14 Schematic diagrams of two different angles of the top of the inner barrel body 318 shown. The inner barrel body 318 can be made of plastic or other materials. The top surface of the inner barrel body 318 is provided with a protrusion 3181, which can be a plurality of ribs arranged vertically and horizontally or convex points arranged in an array. The protrusion 3181 is used to abut against the first magnetic source sheet 414 to reduce the contact between the first magnetic source sheet 414 and the inner barrel body 318. In other words, the protrusion 3181 on the top surface of the inner barrel body 318 abuts against the first magnetic source sheet 414, so that the first magnetic source sheet 414 and the inner barrel body 318 are in point contact or line contact, reducing the local low temperature caused by the direct heat transfer from the first magnetic source sheet 414 to the inner barrel body 318. The protrusion 3181 on the top surface of the inner barrel body 318 is used to form an air gap between the first magnetic source sheet 414 and the inner barrel body 318.

[0120] In the embodiment of using a plurality of convex ribs 3181 arranged vertically and horizontally to support the first magnetic source sheet 414, the convex ribs 3181 divide the top surface of the inner barrel 318 into a plurality of grids, and the size of the grid (that is, the arrangement density of the convex ribs) is set according to the support requirements of the first magnetic source sheet 414 and the heat insulation effect of the air gap. That is, the arrangement of the convex ribs 3181 on the top surface of the inner barrel 318 needs to consider the support requirements for the first magnetic source sheet 414 and the heat insulation effect of the air gap at the same time.

[0121] As described above, after the first magnetic conductive plate 413 and the first magnetic source sheet 414 are matched, the two are required to fit tightly to achieve zero gap matching. It is not completely reliable to achieve the above tight fit only by relying on the magnetic attraction of the first magnetic source sheet 414 to the first magnetic conductive plate 413. The traditional means to solve this problem should be to use a support plate for support. However, the fresh-keeping storage container 30 of this embodiment, based on the consideration of balanced fresh-keeping temperature, creatively proposes to use vertically and horizontally arranged ribs 3181 for support, which realizes reliable support on the one hand, and realizes uniform cooling by using air gaps on the other hand.

[0122] The height of the protrusion 3181 (rib) on the top surface of the inner barrel 318 can be set according to the size of the air gap that satisfies uniform cooling, and can generally be set to 1-3 mm, thereby occupying a smaller space and meeting the cooling requirements.

[0123] The present embodiment creatively recognizes that the temperature of the cold air just entering the barrel body 310 is very low, and it is necessary to address the problem of local over-cooling caused by the cold air conducting cold energy to the fresh-keeping storage space 330. By arranging a first magnetic field component 41 and a thermal insulation layer (air gap) between the air supply section 341 and the barrel liner 318, the cold energy of the cold air is conducted to the fresh-keeping storage space 330 via the first magnetic field component 41 (the first magnetic source sheet 414 also has a certain heat insulation effect) and the thermal insulation layer (air gap) as well as the top wall of the inner barrel body 318, thereby transferring an appropriate amount of cold energy to the fresh-keeping storage space 330, helping to maintain a suitable storage temperature in the entire fresh-keeping storage space 330, and effectively avoiding the problem of local over-cooling in the fresh-keeping storage space 330.

[0124] In addition to the air gap, in the solution of this embodiment, a heat-insulating board (foam board, vacuum insulation board, etc.) and a cold storage material can also be used to achieve the heat insulation function.

[0125] A plurality of claws 3182 may also be provided on both lateral sides of the top surface of the inner barrel body 318. The claws 3182 are used to clamp the extension 4131 of the first magnetic conductive plate 413, and press the first magnetic conductive plate 413 and the first magnetic source sheet 414 flatly on the top surface of the inner barrel body 318. This ensures that the first magnetic field assembly 411 is stably and reliably fixed to the inner barrel body 318.

[0126] In some embodiments, the protruding height of the protruding section of the extension part 4131 may be greater than the thickness of the first magnetic source sheet 414, so as to provide space for the protruding section 3181 to support the first magnetic source sheet 414. Meanwhile, the protruding section of the extension part 4131 may better cooperate with the claw 3182.

[0127] In other embodiments, the protruding height of the protruding section of the extension portion 4131 may also be substantially the same as the thickness of the first magnetic source sheet 414 , so that the bottom surface of the first magnetic field assembly 411 is substantially flush.

[0128] In the embodiment where the first magnetic field assembly 411 is provided with the first electromagnetic coil 415, a coil receiving groove 3184 for placing the first electromagnetic coil 415 may also be provided on the top surface of the inner barrel 318. The shape of the coil receiving groove 3184 is adapted to the shape of the first electromagnetic coil 415, and the groove depth of the coil receiving groove 3184 is adapted to the thickness of the first electromagnetic coil 415, so as to ensure that the first electromagnetic coil 415 can reliably abut against the first magnetic source sheet 414.

[0129] One or more sensor accommodating parts 3185, light accommodating parts 3186, cable accommodating grooves 3187, etc. may also be provided on the top surface of the inner barrel body 318. The sensor accommodating part and the light accommodating part may protrude toward the fresh-keeping storage space 330. The sensor accommodating part 3185 is used to place the temperature sensor 3188, and its size and shape are adapted to the shape of the temperature sensor 3188. In some embodiments of the present invention, the temperature sensor 3188 and the sensor accommodating part 3185 may be provided in multiple (for example, two) portions to detect the temperature of different areas at the top of the fresh-keeping storage space 330. For example, the temperature sensor 3188 may be arranged at intervals along the flow direction of the refrigeration airflow, so as to respectively detect the temperature difference in the upstream and downstream of the refrigeration airflow. The temperature detected by the temperature sensor 3188 is used as the basis for refrigeration control of the fresh-keeping storage container 30.

[0130] The light receiving portion 3186 is used to place a light source, and its size and shape are adapted to the appearance of the light source. The light source is used to illuminate when the drawer 320 is pulled out.

[0131] The cable receiving groove 3187 is used to arrange various cables of the temperature sensor 3188 and the light source, such as power cables and signal cables. The cable receiving groove 3187 leads the various cables to the outside of the fresh-keeping storage container 30.

[0132] The top surface of the inner barrel body 318 facing the interior of the fresh-keeping storage space 330 is a complete surface, and the refrigeration airflow of the air supply section 341 will not leak into the interior of the inner barrel body 318, thereby helping to ensure that the temperature in the fresh-keeping storage space 330 drops steadily.

[0133] Fig.17 Schematic diagram of an air guide frame 319 on the top wall of an inner barrel 318 in a fresh-keeping storage container 30 according to an embodiment of the present invention. Fig.18 yes Fig.17 A schematic diagram of the wind shield strip 350 at the wind guide frame 319 is shown. Fig.19 yes Figure 7The partial enlarged view at point E shows the matching area between the wind shield strip 350 and the wind guide frame 319.

[0134] The front end of the top wall of the inner barrel 318 is provided with an air guide frame 319, which defines the front air outlet 3191 of the air supply section 341. The air guide frame 319 extends upward from the front end of the top wall of the inner barrel 318, and the air guide frame 319 forms a plurality of air outlets 3191 to send out the airflow after passing through the air supply section 341.

[0135] The air guide frame 319 may be provided with a snap-fit ​​structure such as a snap buckle or a snap hole above the air outlet 3191. The air guide frame 319 is snap-fitted to the front end of the barrel shell through the above-mentioned snap-fit ​​structure to achieve a fixed connection between the inner barrel body 318 and the barrel shell.

[0136] The wind guide frame 319 may be provided with a windshield strip connection portion 3192 below the air outlet 3191, and the windshield strip connection portion 3192 is used to connect the windshield strip 350 below the inner barrel 318. In some embodiments, the windshield strip connection portion 3192 may be provided as a connecting strip that protrudes backward and is arranged in a transverse direction. The upper and lower surfaces of the connecting strip may be provided with a clamping strip 3193, respectively, and the clamping strip 3193 may be one or more strips.

[0137] The windshield strip 350 includes a windshield strip body 3501 and a snap-in groove 3502, wherein the snap-in groove 3502 is located at the upper portion of the windshield strip 350, forming a snap-in groove 3503 opening forward. The snap-in groove 3503 is used to snap into the windshield strip connecting portion 3192, and is provided with a snap-in structure that cooperates with the snap-in strip 3193. The shape of the snap-in groove 3503 is adapted to the outer shape of the connecting strip.

[0138] The wind shield body 3501 extends obliquely downward from the front end of the lower groove wall of the snap-in groove 3502, and the extension length requires that when the drawer 320 is in the barrel body 310, the front end of the wind shield body 3501 can contact the rear of the drawer end plate assembly 321, so that the airflow passing through the air port 3191 of the air guide frame 319 enters the air flow section 342 defined in the drawer end plate assembly 321. In other words, the wind shield body 3501 blocks the gap between the top of the barrel body 310 and the drawer end plate assembly 321, preventing the airflow from entering the fresh-keeping storage space 330 through the gap, affecting the uniform cooling of the fresh-keeping storage space 330.

[0139] The extension length of the wind shield main body 3501 along the front-to-back direction is set according to the size of the gap between the top of the barrel body 310 and the drawer end plate assembly 321. Considering the deformation and sealing effect, it can be set to be greater than or equal to 5 mm and less than or equal to 15 mm.

[0140] The snap-in groove 3502 is made of a relatively hard material (e.g., ABS or similar materials) to facilitate firm snap-in with the wind guide frame 319 of the barrel. The wind deflector body 3501 is made of a relatively soft material (e.g., TPE (ThermoPlastic Elastomer, thermoplastic elastomer) material, rubber, silicone, etc.) to facilitate deformation in contact with the drawer end plate assembly 321 to achieve better sealing. The wind deflector 350 can be made by a double-material injection molding process.

[0141] The above-mentioned windshield strip 350 of this embodiment is connected by the way of the clamping groove 3503 and the connecting strip, and the opening direction of the clamping groove 3503 is consistent with the opening direction of the barrel body 310. When the drawer 320 is placed in the barrel body 310, the windshield strip body 3501 gradually contacts the end plate wind shield 3211 at the rear of the drawer end plate assembly 321. The windshield strip body 3501 is subjected to the backward pressure of the end plate wind shield 3211, so that when the windshield strip body 3501 is subjected to pressure, the pressure can be transmitted to the clamping groove 3502, and then the clamping groove 3502 can offset part of the pressure by slightly expanding and deforming, thereby reducing the pressure burden on the connection between the clamping groove 3502 and the connecting strip, which is conducive to improving the service life of the windshield strip 350. In addition, the above-mentioned clamping structure is also convenient for replacing the windshield strip after aging.

[0142] The first rib 3504 is provided on the inner side of the side wall of the snap-in groove 3502 of the windshield strip 350 and the windshield strip body 3501. After the windshield strip is installed on the wind guide frame 319, the first rib 3504 can cooperate with the clip strip 3193 at the bottom of the connecting strip on the wind guide frame 319. The first rib 3504 and the clip strip 3193 can be provided with mutually cooperating guide surfaces. That is, the front side of the first rib 3504 is formed with an inclined guide surface to facilitate the assembly of the windshield strip 350. That is, the guide surface is used to guide the snap-in groove 3503 during the installation of the windshield strip 350. The rear side of the first rib 3504 is a stop surface. After the first rib 3504 is engaged with the clip strip 3193, the stop surface can prevent the first rib 3504 and the clip strip 3193 from sliding out after assembly.

[0143] The snap-in groove 3502 may be provided with a second rib 3505 at the rear side of the first rib 3504. After the windshield strip is assembled, the snap-in strip 3193 is located between the first rib 3504 and the second rib 3505. The top of the second rib 3505 is arc-shaped and abuts against the connecting strip, thereby reinforcing the connection between the windshield strip 350 and the connecting strip. The first rib 3504 and the second rib 3505 have the same protruding height, which is less than or equal to one-fourth of the width of the snap-in groove 3503 (the distance between the two groove side walls).

[0144] A third rib 3506 may be further provided on the groove wall (the groove wall at the top) of the clamping groove 3503, the first rib 3504 and the second rib 3505, and a guide surface cooperating with the connecting strip may also be provided on the front surface of the third rib 3506. The third rib 3506, the first rib 3504 and the second rib 3505 clamp the connecting strip together, thereby realizing a reliable connection between the windshield strip 350 and the connecting strip, and having a certain deformation space.

[0145] The windshield strip body 3501 is in the shape of a curved sheet. The windshield strip body 3501 is bent downward as a whole, that is, with respect to the airflow, the windshield side is a concave surface. During the contact between the windshield strip 350 and the drawer end plate assembly 321, the windshield strip 350 gradually deforms. Utilizing the structure of the above-mentioned windshield strip 350, the deformation occurs at the position where the windshield strip body 3501 is connected to the snap-in groove 3502 and in the middle of the windshield strip body 3501. The above-mentioned two deformations can reduce the pressure on the windshield strip 350 and extend its service life. On the other hand, during the compression deformation process of the windshield strip 350, the overall shape of the windshield surface can be maintained, so that the airflow can flow smoothly.

[0146] The curvature of the windshield strip body 3501 becomes smaller and smaller from the position where it is connected with the clamping groove 3502. In other words, the curvature of the windshield strip body 3501 becomes more and more gentle, which is conducive to ensuring the windshield effect of the windshield strip 350.

[0147] The thickness of the middle section of the windshield strip body 3501 is greater than the thickness of the two ends. This makes it easier for the two ends of the windshield strip body 3501 to deform, reduces the feedback resistance of the windshield strip body 3501, and improves the user experience. For example, the thickness of the end sections of the windshield strip body 3501 can be 0.2 mm, while the thickness of the middle section is 1 mm.

[0148] Fig. 20 Schematic diagram of the cooperation between the inner barrel 318 and the drawer end plate assembly 321 in the fresh-keeping storage container 30 according to an embodiment of the present invention. Fig.21 yes Fig. 20 Exploded view of the components shown.

[0149] The front part of the barrel body 310 is provided with an end plate fitting 370, which can be provided integrally with the inner barrel body 318. In other embodiments, the end plate fitting 370 can also be an independent end plate fitting 370. The end plate fitting 370 is provided around the front opening of the barrel body 310. The clamping structures of the end plate fitting 370 arranged at intervals along the front opening of the barrel body 310 are clamped with the inner barrel body 318.

[0150] Fig. 22 and Fig.23They are schematic diagrams of two different viewing angles of the end plate matching member 370 of the fresh-keeping storage container 30 according to one embodiment of the present invention, and Fig.24 Schematic diagram of an annular sealing strip 371 in a fresh-keeping storage container 30 according to an embodiment of the present invention.

[0151] The front side of the end plate fitting 370 is provided with a sealing installation groove 3701 along the circumference of the opening of the barrel body 310, and the notch direction of the sealing installation groove 3701 is advanced to accommodate the annular sealing strip 371. The rear side of the end plate fitting 370 is also provided with a barrel body connecting strip 3706 protruding toward one side of the barrel body at the outer periphery of the sealing installation groove 3701. A plurality of clamping structures (such as clamping holes) are arranged at intervals on the barrel body connecting strip to cooperate with corresponding clamping structures (such as clamping claws) arranged on the inner barrel body, thereby realizing the connection between the end plate fitting 370 and the inner barrel body 318.

[0152] The sealing installation groove 3701 forms a rearward protrusion 3703 on the rear side of the end plate fitting 370. A transition duct 3704 connected to the front air outlet 3191 of the air guide frame 319 can be formed below the top section of the protrusion 373 formed by the sealing installation groove 3701. The lower end of the transition duct 3704 is used to communicate with the top air inlet 3421 of the air passing section 342. A transition duct outlet 3705 is provided on the lower surface of the transition duct 3704, which is opposite to the top air inlet 3421 of the air passing section 342.

[0153] That is, the airflow can be converted from forward blowing to downward blowing by using the transition air duct 3704 of the end plate fitting 370, that is, the transition air duct 3704 is used as the area where the airflow direction is turned. The bottom wall of the transition air duct 3704 is formed by a part of the groove wall of the sealing installation groove 3701, which saves the occupied space.

[0154] On the other hand, the transition air duct 3704 is located below the top annular sealing strip 371, which can also avoid direct contact with the outside of the fresh-keeping storage container 30, thereby avoiding the occurrence of condensation, etc. Since the air duct of the fresh-keeping storage container 30 of this embodiment needs to pass through the joint portion of the barrel body 310 and the drawer 320, the structure of the end plate fitting 370 above enables the refrigeration airflow to smoothly pass through the joint area of ​​the barrel body 310 and the drawer 320, with a compact structure and small space occupation, while avoiding the occurrence of condensation, etc.

[0155] The annular sealing strip 371 is at least partially arranged in the sealing installation groove 3701, and the annular sealing strip 371 is used to seal the gap between the drawer end plate assembly 321 and the opening of the barrel body 310. The sealing installation groove 3701 can also be provided with a plurality of elastic member accommodating portions 3702 at intervals. A plurality of elastic members 3711 (for example, springs or elastic air bags) are used to be arranged in the elastic member accommodating portion 3702. One end (rear end) of the elastic member 3711 abuts against the bottom of the sealing installation groove 3701, and the other end (front end) of the elastic member 3711 is used to abut against the rear side of the annular sealing strip 371. In the process of pushing the drawer 320 into the barrel body 310, the rear side of the drawer end plate assembly 321 contacts the front side of the annular sealing strip 371, and then further squeezes the annular sealing strip 371. Then the annular sealing strip 371 squeezes the elastic member 3711, so that the elastic member 3711 forms a force that pushes the annular sealing strip 371 toward the drawer end plate assembly 321. This allows the annular sealing strip 371 to be in closer contact with the drawer end plate assembly 321, which helps the cooling air flow to enter the top of the air flow section 342 defined in the drawer end plate assembly 321 from the air supply section 341, thereby achieving the surrounding of the cooling air flow.

[0156] The annular sealing strip 371 can be made of soft polyvinyl chloride (SPVC), silicone, rubber and other materials, which have a certain degree of elasticity. The two ends of the elastic member 3711 in the sealing direction respectively abut against the bottom of the sealing installation groove 3701 and the annular sealing strip 371, and are distributed at intervals along the circumference of the sealing installation groove 3701, thereby providing elastic support and elastic space at different positions. In the case where the forces at various positions of the annular sealing strip 371 are uneven, the elastic member 3711 can also balance the forces at various positions of the annular sealing strip 371 by adjusting its own compression amount, thereby achieving consistent sealing of the annular sealing strip 371 in the circumference of the barrel opening.

[0157] Fig.25 3 is a schematic diagram of the interior of a barrel 310 in a fresh-keeping storage container 30 according to an embodiment of the present invention. The fresh-keeping storage container 30 of this embodiment can adopt a push-pull drawer, that is, push-pull guide rails 3141 are arranged on both sides of the barrel 310, and the drawer is installed on the push-pull guide rails 3141. When it is necessary to open the drawer 320, first push the drawer 320 slightly further inward, the locking member of the push-pull guide rail 3141 is disengaged, and the drawer 320 is pushed outward a certain distance by an elastic member such as a spring, so that the user can further pull out the drawer 320. When it is necessary to push the drawer 320 in, the locking member of the push-pull guide rail 3141 realizes the lock fit, which can ensure that the drawer 320 is put in place. This push-pull drawer does not need to be provided with a handle on the drawer 320, which is convenient for the user to operate, and can ensure sealing at the same time.

[0158] In particular, for a push-open drawer, a certain amount of internal compression is required before the push-open mechanism of the push-open guide rail 3141 can be released. Therefore, the annular sealing strip 371 can have a certain amount of movable space relative to the end plate matching piece 370, which can facilitate the opening of the push-open storage item while strengthening the seal. Therefore, it is possible to apply the surrounding air duct to the push-open drawer.

[0159] The annular sealing strip 371 may also be provided with a hook 3712 extending toward the end plate fitting 370 (extending backward). A slot 3707 is formed on the inner wall of the sealing installation groove 3701. The hook 3712 can be engaged with the slot 3707 in the embedding direction of the annular sealing strip 371. When the annular sealing strip 371 moves in the space in the front-to-back direction, the hook 3712 can also move freely in the slot 3707. When the forward movement stroke of the annular sealing strip 371 exceeds the set formation, the hook 3712 is engaged with the slot 3707, thereby limiting the position of the annular sealing strip 371, thereby preventing the annular sealing strip 371 from falling out of the sealing installation groove 3701. The annular sealing strip 371 may also be provided with a guide column 3713 extending toward the end plate fitting 370 (extending backward). The elastic member 3711 can be sleeved on the guide post 3713, so that the position of the elastic member 3711 is limited by the guide post 3713. Most of the sealing body 3714 of the annular sealing strip 371 is embedded in the sealing installation groove 3701, so that the fresh-keeping storage container 30 can be reliably sealed.

[0160] In some other optional embodiments of the present invention, the air supply section 341 may also be disposed between the first magnetic field assembly 411 and the top wall of the inner barrel 318. That is, the air duct member 3111 is disposed between the first magnetic field assembly 411 and the side wall of the inner barrel 318. The air supply section 341 is located below the first magnetic field assembly 411. Fig.26 Schematic diagram of the internal air path of the fresh-keeping storage container 30 according to one embodiment of the present invention. Fig. 27 yes Fig.26 A partial enlarged view of point F in the middle.

[0161] An air supply section 341 is formed between the first magnetic field assembly 411 and the side wall of the inner barrel 318. The air supply section 341 is closer to the inner barrel 318. The fresh-keeping storage space 330 can be cooled faster during the refrigeration process. If the first magnetic field assembly 411 generates heat during the magnetic field, the airflow flowing through the air supply section 341 can also take away the heat of the first magnetic field assembly 411, reducing the effect of the first magnetic field assembly 411 heating on the temperature distribution of the fresh-keeping storage space 330. The air duct member 3111 is disposed below the first magnetic field assembly 411 and is configured to define the air supply section 341. In order to prevent the fresh-keeping storage space 330 from being close to the air supply section 341, the air duct member 3111 can also be provided with an insulation layer 3102 between the air supply section 341 and the inner barrel 318, and the insulation layer 3102 can be disposed below the air supply section 341. The insulation layer 3102 can be made of insulation foam material, and its thickness ranges from 5 to 10 mm. For another example, the insulation layer 3102 is made of a vacuum insulation board, and its thickness ranges from 2 to 5 mm. According to the material of the insulation layer, the corresponding thickness range is set, which can ensure the cooling speed and avoid the local temperature from being too low. In other embodiments, if the temperature of the refrigeration airflow is relatively high (for example, above -7°C), PE or an air layer can also be selected as the insulation layer 3102.

[0162] Alternatively, the above-mentioned insulation layer 3102 can also be replaced by a cold storage component. A cold storage component is arranged between the air supply section 341 and the side wall of the inner barrel 318, and the cold storage component can store cold energy when the return air duct is ventilated, and release cold energy to the fresh-keeping storage space 330 through the side wall of the inner barrel 318 when the ventilation is stopped.

[0163] The air supply section 341 is close to the side wall of the inner barrel body 318, so that the cooling speed of the inner barrel body 318 can be faster. The use of the cold storage component can better reduce the temperature fluctuation in the fresh-keeping storage space 330. When the refrigeration is stopped, the temperature inside the fresh-keeping storage container 30 rises more slowly and the temperature is more stable.

[0164] Those skilled in the art may choose to dispose the air supply section 341 above or below the first magnetic field assembly 411 according to the refrigeration requirements and the barrel structure of the fresh-keeping storage container 30 .

[0165] Fig.28 is a schematic diagram of a drawer 320 in a fresh-keeping storage container 30 according to an embodiment of the present invention from one perspective; Fig.29 is a schematic diagram of a drawer 320 in a fresh-keeping storage container 30 according to an embodiment of the present invention from another perspective; Fig.30 1 is an exploded view of the components of the drawer 320 in the fresh-keeping storage container 30 according to one embodiment of the present invention.

[0166] The drawer 320 includes a storage body composed of a drawer bottom plate 322, a drawer rear plate 323, a drawer left side plate 324, and a drawer right side plate 325, a drawer end plate assembly 321 located in front of the storage body, and a storage tray 360 placed inside the storage body. The outer surfaces of the drawer left side plate 324 and the drawer right side plate 325 are respectively formed with connecting plates 3251 for connecting to the push-pull type guide rail 3141, so as to be pulled relative to the barrel body 310 along the extension and contraction of the guide rail.

[0167] The drawer end plate assembly 321 can generally be provided with an end plate body 3212, an end plate hood 3211, and an end plate heat insulation member 3213 located between the end plate hood 3211 and the end plate body 3212. The end plate body 3212 is in the shape of a flat plate, which may include a substrate, decorative strips located around the substrate, and a panel located in front of the substrate. The substrate serves as a basic member for connecting other components of the drawer end plate assembly, and the decorative strips are buckled on the periphery of the substrate. The panel can be glass or other thin plates with an appearance design, serving as the appearance of the drawer. There can be a gap between the substrate and the panel, so that the air between the gaps can be used to achieve heat insulation, thereby reducing the amount of cold air dissipated outward through the drawer end plate assembly 321.

[0168] The end plate hood 3211 is arranged on the inner side (rear part) of the end plate body 3212, and the end plate hood 3211 and the end plate body 3212 define an air duct space, and an end plate heat insulation 3213 is arranged on the front side of the end plate hood 3211, that is, the end plate heat insulation 3213 is located on the rear side of the air duct space. The air duct space between the end plate heat insulation 3213 and the end plate body 3212 forms a wind passing section 342.

[0169] The end plate hood 3211 protrudes from the end plate body 3212 into the fresh-keeping storage space 330, and the left side wall, right side wall and bottom side wall of the end plate hood 3211 can be respectively connected to the drawer left side board 324, the drawer right side board 325 and the drawer bottom board 322. A top air inlet 3421 opposite to the lower end of the transition air duct 3704 is provided on the top wall of the end plate hood 3211, and an air inlet grille can be provided at the top air inlet 3421 to prevent foreign matter from entering the wind section 342.

[0170] Fig.31 It is a partial enlarged cross-sectional view of the matching position between the top of the drawer end plate assembly 321 and the top of the front end of the barrel body 310 in the fresh-keeping storage container 30 according to an embodiment of the present invention; Fig.32 3 is a schematic diagram of the coordination between the top wall of the drawer end plate assembly 321 and the bottom wall of the transition air duct 3704 in the fresh-keeping storage container 30 according to an embodiment of the present invention.

[0171] The bottom wall of the transition air duct 3704 (the surface where the air outlet of the transition air duct 3704 is located) and the top wall of the end plate air cover 3211 (the surface where the top air inlet 3421 of the end plate air cover 3211 is located) are respectively inclined. The inclination is downwardly inclined from front to back. That is to say, from the overall perspective of the fresh-keeping storage container 30, the plane where the bottom wall of the transition air duct 3704 is located and the plane where the top wall of the end plate air cover 3211 is located are inclined in the same direction, that is, they are both inclined toward the bottom of the fresh-keeping storage container 30 from front to back.

[0172] The range of the angle between the top wall of the end plate hood 3211 (the surface where the top air inlet 3421 of the end plate hood 3211 is located) and the vertical direction is greater than or equal to 10 degrees and less than or equal to 80 degrees. The range of the angle between the plane where the lower end of the transition duct 3704 is located and the vertical direction can also be set to be greater than or equal to 10 degrees and less than or equal to 80 degrees. The top wall of the end plate hood 3211 and the plane where the lower end of the transition duct 3704 is located can be set in parallel and the distance can be set to be greater than or equal to 3 mm and less than or equal to 20 mm. This distance can avoid serious air leakage due to excessive distance on the one hand, and on the other hand, it is also beneficial to avoid friction between the end plate hood 3211 and the barrel body 310 during the drawing and pulling of the drawer 320. The flow route of the refrigeration airflow is parabolic as a whole, not a vertical angle, so that the flow of the refrigeration airflow from the end plate hood 3211 to the lower end of the transition duct 3704 is smoother, which is beneficial to reduce wind loss and effectively avoid cold concentration. In addition, the end plate of the end plate wind shield 3211 is inclined, which is also helpful to reduce the probability of foreign matter falling into the wind section 342.

[0173] The inclined setting of the bottom wall of the transition air duct 3704 can make the flow path of the cooling air flow sent out of the transition air duct outlet 3705 into the wind section 342 in a parabolic shape as a whole, thereby making the cooling air flow smoother in the joint area between the drawer 320 and the barrel body 310, which is conducive to reducing wind resistance and air leakage.

[0174] In addition, when the user of the refrigerator takes and places the stored items in the drawer 320 from above, from the user's perspective, the above-mentioned inclination can visually make the drawer end plate assembly 321 thinner, giving the user a better user experience, thereby avoiding complaints from users about the air flow section 342 occupying the space in the front and rear directions.

[0175] In some embodiments, the angle between the plane where the bottom wall of the transition air duct 3704 is located and the vertical direction is angle a, that is, the design value of angle a can be greater than or equal to 60 degrees and less than or equal to 75 degrees. For example, it can be 60 degrees, 62 degrees, 64 degrees, 70 degrees, 72 degrees, and 75 degrees.

[0176] Accordingly, the angle between the plane where the top wall of the end plate air shield 3211 is located and the vertical direction is angle b, that is, the design value of angle b can be greater than or equal to 60 degrees and less than or equal to 75 degrees. For example, it can be 60 degrees, 62 degrees, 64 degrees, 70 degrees, 72 degrees, 75 degrees. Angle a and angle b can be set to be the same.

[0177] The distance d from the air outlet of the transition air duct 3704 to the top air inlet 3421 of the end plate air cover 3211 can be set to be greater than or equal to 3 mm and less than or equal to 20 mm. For example, it can be 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, etc. This ensures that there is no structural interference between the drawer and the barrel body, and at the same time, there is no air leakage due to excessive spacing.

[0178] The area of ​​the top air inlet 3421 of the end plate air cover 3211 may be larger than the area of ​​the air outlet of the transition air duct 3704 , so as to facilitate the cooling airflow to smoothly enter the air flow section 342 .

[0179] A boss 3214 is provided in the upper part of the rear wall of the end plate air shield 3211, that is, near the top air inlet 3421 of the end plate air shield 3211. The top surface position of the boss 3214 when the drawer 320 is in the closed position is higher than or flush with the position of the lowest end of the wind shield body 3501 of the wind shield 350 in the natural state. That is, when the wind shield body 3501 does not contact the drawer end plate assembly 321, the front end of the wind shield body 3501 is slightly higher than the upper edge of the boss 3214. As the drawer 320 is pushed back, the wind shield body 3501 contacts the top of the boss 3214 or the position near the top of the boss 3214. After the wind shield body 3501 is contacted and deformed and bent, a part of it contacts the surface of the end plate air shield 3211, and a part of it contacts the top surface of the boss 3214, thereby forming a cavity together with the above-mentioned angled surface, which is conducive to improving the sealing effect.

[0180] In some embodiments, an end plate wind guide rib (not shown) may be provided between the end plate heat insulation 3213 and the end plate body 3212, and the end plate wind guide rib is used to divide the wind section 342 into a plurality of wind channels, thereby ensuring that the refrigeration airflow can evenly pass through the wind section 342. The end plate heat insulation 3213 can prevent the refrigeration airflow from quickly transferring cold to the front of the fresh-keeping storage space 330, thereby preventing the front area of ​​the fresh-keeping storage space 330 from being overcooled.

[0181] The wind guide ribs of the end plate can form at least two wind guide surfaces, and the two wind guide surfaces are distributed left and right in the wind passing section 342. The wind guide surface on the left side is inclined from the left side to the right side of the wind passing section 342 and from the bottom to the top, and the wind guide surface on the right side is inclined from the right side to the left side of the wind passing section 342 and from the bottom to the top. When the refrigeration airflow enters from the top of the wind passing section 342, after encountering the two wind guide surfaces, it can diffuse along one wind guide surface to the left side of the wind passing duct and diffuse along the other wind guide surface to the right side of the wind passing duct. In other words, the refrigeration airflow entering the wind passing duct diffuses to the left and right sides of the wind passing section 342, so that the refrigeration airflow is distributed more evenly in the wind passing section 342, and then the refrigeration airflow flowing out of the wind passing section 342 is distributed more evenly at the bottom of the drawer 320.

[0182] The bottom side wall of the end plate hood 3211 is provided with a bottom air outlet, and the inlet of the cold transfer section 343 is provided at a position of the drawer bottom plate opposite to the bottom air outlet of the end plate hood 3211. The bottom air outlet of the end plate hood 3211 and the inlet of the cold transfer section 343 provided on the drawer bottom plate may be separated by a partition bar, thereby forming a plurality of corresponding openings. In some embodiments, an air guide may be provided below the inlet of the cold transfer section 343, so that the reversing process of the refrigeration airflow from downward to backward is smoother.

[0183] The air guide member has an air guide surface. During the use of the drawer 320, the refrigeration air flows through the wind section 342 and flows out from the bottom of the wind section 342. The refrigeration air flow is gradually guided downward and backward by the air guide surface of the guide device, so that the flow direction of the refrigeration air flow gradually changes from longitudinal to lateral, and finally flows to the rear of the drawer 30. Therefore, the air guide surface can guide the refrigeration air flow, gradually change the flow direction, and avoid the refrigeration air flow directly turning at a vertical angle on the bottom side of the wind section 342, so that the refrigeration air flow flows more smoothly, and avoids the air flow accumulating at the front end of the drawer 320 to generate turbulence. The air guide surface is along the front-to-back direction of the drawer 320, with one end located in front of the air outlet of the wind section 342, and the other end extending to the rear of the drawer 320 and gradually transitioning downward. The air guide surface can be formed as a curved surface with the concave side facing obliquely upward.

[0184] The cold transmission section 343 is formed between the drawer bottom plate and the bottom wall of the inner barrel body. The bottom section of the sealing installation groove 3701 in the end plate fitting 370 and the bottom section of the annular sealing strip 371 are both located below the cold transmission section 343, which can prevent the refrigeration airflow from leaking from the bottom.

[0185] The ratio of the height of the cold transfer section 343 to the height of the fresh-keeping storage space can be set to be greater than or equal to one hundredth and less than or equal to one tenth. This helps to achieve a good heat exchange efficiency between the cold air volume of the cold transfer section 343 and the fresh-keeping storage space 330, thereby ensuring that at least the effective storage area of ​​the fresh-keeping storage space 330 has a good cooling efficiency.

[0186] The ratio of the height of the cold transmission section 343 and the air intake of the fresh-keeping storage container 30 can be set to be greater than or equal to one-fiftieth and less than or equal to two-fifths, the height of the cold transmission section 343 is in meters, and the air intake is in cubic meters per minute. The air intake setting range of the fresh-keeping storage container 30 is greater than or equal to 0.02 cubic meters per minute and less than or equal to 0.5 cubic meters per minute. The height of the cold transmission air duct 343 is greater than or equal to 5 mm and less than or equal to 20 mm. Exemplarily, the height of the cold transmission section 343 is 0.005 meters, the air intake is 0.25 cubic meters per minute, and the ratio is one-fiftieth. Alternatively, the height of the cold transmission section 343 is 0.01 meters, the air intake is 0.5 cubic meters per minute, and the ratio is one-fiftieth. Alternatively, the height of the cold transmission section 343 is 0.008 meters, the air intake is 0.02 cubic meters per minute, and the ratio is two-fifths. Alternatively, the height of the cold transfer section 343 is 0.02 meters, the air intake is 0.05 cubic meters per minute, and the ratio is two fifths. Alternatively, the height of the cold transfer section 343 is 0.01 meters, the air intake is 0.4 cubic meters per minute, and the ratio is one fortieth. Alternatively, the height of the cold transfer section 343 is 0.015 meters, the air intake is 0.3 cubic meters per minute, and the ratio is one twentieth.

[0187] The space of the cold transfer section 343 is matched with the air intake volume, so that the cold transfer section 343 provides sufficient flow space for the cold air, which helps to ensure that the cold air flows smoothly in the cold transfer section 343.

[0188] The air volume setting range of the fresh-keeping storage container 30 is greater than or equal to 0.2 cubic meters per minute and less than or equal to 0.5 cubic meters per minute. For example, 0.1 cubic meters per minute, 0.15 cubic meters per minute, 0.2 cubic meters per minute, 0.25 cubic meters per minute, 0.35 cubic meters per minute, 0.45 cubic meters per minute, and 0.5 cubic meters per minute. The above air volume setting effectively ensures that the fresh-keeping storage container 30 has sufficient air volume to ensure the cooling efficiency of the fresh-keeping storage space 330.

[0189] The gap between the drawer bottom plate 323 and the bottom wall 312 of the barrel body provides a pulling space when the drawer 320 is pulled out. On the other hand, when the drawer 320 is located inside the barrel body for storage, the gap between the drawer bottom plate 323 and the bottom wall 312 of the barrel body serves as a cooling section 343 surrounding the air duct. The cooling section 343 is located below the entire drawer bottom plate 323, and its height is set according to the capacity of the fresh-keeping storage space 330 and the refrigeration demand. In some embodiments, the height of the cooling section 343 can be set to 5% to 12% of the height of the fresh-keeping storage space 330, such as 5%, 8%, 12%, etc., and can be set to 8%, in particular, to meet the refrigeration demand of the fresh-keeping storage space 330 while reducing the longitudinal space occupied by the cooling section 343 in the fresh-keeping storage container 30.

[0190] The airflow at the rear end of the cold transmission section 343 enters the gap between the drawer rear plate 322 and the barrel rear wall 313, which can be used as the barrel inner return air section 344 (also called the rear wall air path section). An inner barrel return air port 346 is provided in the middle of the barrel rear wall 313, and an inter-barrel return air section 345 is formed between the inner barrel return air port 346 and the barrel return air port 317 on the barrel rear wall. The airflow eventually reaches the barrel return air port 317 from the inner barrel return air port 346 via the inter-barrel return air section 345.

[0191] The inner barrel return air vent 346 can be configured to form a preset pattern, for example, a plurality of diamond-shaped holes are arranged in an aesthetically pleasing pattern, which can prevent the stored objects from entering the inter-barrel return air section 345, and can also provide a good visual effect to the user after the drawer 320 is pulled out. The opening area of ​​the inner barrel return air vent 346 is obtained by studying and analyzing the size of the return air volume. In some embodiments, the opening area of ​​the inner barrel return air vent 346 can be set to 10% to 30% of the inner barrel rear wall, for example, 10%, 20%, 30%, and particularly 18%.

[0192] The inner barrel body 318 is provided with shielding strips 3461 on both sides of the inner barrel body return air port 346, and the heat preservation layer 3131 between the inner barrel body rear wall and the barrel shell forms an inter-barrel return air section 345 in the area between the inner barrel body return air port 346 and the shielding strips. The refrigeration airflow returns from the inner barrel body return air port 346 to the barrel body return air port 317 via the return air section, completing the surrounding heat exchange in the entire fresh-keeping storage container 30. The position of the inner barrel body return air port 346 corresponds to the barrel body return air port 317 in the longitudinal direction, so that the inter-barrel return air section 345 is straight in the longitudinal direction, making the structure of the inter-barrel return air section 345 more concise and convenient for air outlet.

[0193] The inner barrel return air port 346 is located between the air inlet 316 and the left side wall of the barrel 310 in the horizontal direction. The ratio of the distance from the right end of the inner barrel return air port 346 to the left side wall of the barrel 310 to the left and right lateral length of the rear side wall of the barrel 310 can be set to be less than or equal to one half. In other words, taking the side wall farther from the air inlet 316 among the left and right side walls of the barrel 310 as the reference side wall, the ratio of the distance from the end of the inner barrel return air port 346 away from the reference side wall to the reference side wall to the left and right lateral length of the rear side wall of the barrel 310 is less than or equal to one half.

[0194] The ratio of the longitudinal distance from the bottom end of the inner barrel return air port 346 to the bottom end of the inner surface of the rear side wall of the barrel 310 to the longitudinal length of the rear side wall of the barrel 310 can be set to be greater than or equal to one-fourth. On the one hand, the cold air needs to flow upward for a certain distance to reach the inner barrel return air port 346, so that the cold air can be more fully diffused in the fresh-keeping storage space 330, which helps to improve the refrigeration efficiency and refrigeration uniformity. On the other hand, the length of the inter-barrel return air section 345 is not too long, thereby simplifying the structure.

[0195] The ratio of the longitudinal distance from the bottom end of the inner barrel air return port 346 to the inner bottom surface of the drawer 320 to the depth of the drawer 320 is greater than or equal to one-fourth, which helps to make the cold air more fully contact the back panel of the drawer 320, thereby increasing the degree of cold air wrapping around the drawer 320, thereby improving the cooling efficiency and cooling uniformity of the effective storage area in the drawer 320.

[0196] The area of ​​the barrel body air return port 317 may be greater than or equal to the area of ​​the air inlet 316, thereby making the air flow smoother.

[0197] The ratio of the area of ​​the inner barrel return air port 346 to the return air volume of the fresh-keeping storage container 30 can be set to be greater than or equal to 1 / 500 and less than or equal to 1 / 20, the area unit of the inner barrel return air port 346 is square meters, and the unit of the return air volume is cubic meters / minute. For example, it can be 1 / 500, 1 / 400, 1 / 300, 1 / 200, 1 / 100, 1 / 50, 1 / 30, 1 / 20, etc.

[0198] Exemplarily, the return air volume is 0.5 cubic meters per minute, the area of ​​the inner barrel return air port 346 is 0.001 square meters, and the ratio is one-five hundredth. Alternatively, the return air volume is 0.02 cubic meters per minute, the area of ​​the barrel return air port 346 is 0.001 square meters, and the ratio is one-twentieth. Alternatively, the return air volume is 0.4 cubic meters per minute, the area of ​​the barrel return air port 346 is 0.02 square meters, and the ratio is one-twentieth. Alternatively, the return air volume is 0.4 cubic meters per minute, the area of ​​the barrel return air port 346 is 0.01 square meters, and the ratio is one-fortieth. The above-mentioned structural dimensions can make the cold air flow more smoothly when it flows out of the fresh-keeping storage container 30 through the barrel return air port 346, avoiding the cold air from forming turbulence at the barrel return air port 346 and affecting the flow of the cold air flow.

[0199] The thickness of the inter-barrel return air section 345 can be set to be greater than or equal to 5 mm and less than or equal to 30 mm. That is, the distance between the front wall and the rear wall of the inter-barrel return air section 345 is greater than or equal to 5 mm and less than or equal to 30 mm. For example, 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, etc. By making the thickness of the inter-barrel return air section 345 greater than or equal to 5 mm and less than or equal to 30 mm, the inter-barrel return air section 345 has sufficient space for the flow of cold air, which is conducive to ensuring that the cold air flows smoothly after entering the inter-barrel return air section 345.

[0200] The ratio of the area of ​​the inner barrel return air outlet 346 to the area of ​​the rear side wall of the fresh-keeping storage space 330 can be greater than or equal to one-fiftieth and less than or equal to one-fifth. For example, it can be one-fiftieth, one-forty, one-thirtieth, one-twentieth, one-tenth, one-fifth, etc. Exemplarily, the area of ​​the inner barrel return air outlet 346 is 0.001 square meters, the area of ​​the rear side wall of the fresh-keeping storage space 330 is 0.05 square meters, and the ratio is one-fiftieth. Alternatively, the area of ​​the inner barrel return air outlet 346 is 0.02 square meters, the area of ​​the rear side wall of the fresh-keeping storage space 330 is 0.1 square meters, and the ratio is one-fifth. Alternatively, the area of ​​the inner barrel return air outlet 346 is 0.002 square meters, and the area of ​​the rear side wall of the fresh-keeping storage space 330 is 0.04 square meters, and the ratio is one-twentieth. The above-mentioned area ratio parameters help to ensure that the cold air flow at the rear end of the fresh-keeping storage space 330 flows out smoothly from the inner barrel air return port 346, effectively avoiding the accumulation of cold air at the rear of the fresh-keeping storage space 330, thereby avoiding uneven temperature in the fresh-keeping storage space 330 and reducing the storage quality.

[0201] During the entire surrounding process, the refrigeration airflow does not enter the fresh-keeping storage container 30. By improving the design of each section of the surrounding air duct, it is ensured that the fresh-keeping storage space 330 can be evenly cooled, and the quality of fresh-keeping storage is improved by cooperating with the magnetic field. Through actual testing of trial samples, the fresh-keeping storage container 30 and the refrigerator of this embodiment can greatly extend the fresh-keeping storage time of the stored objects. For example, for fresh meat and fish, the fresh-keeping time can be extended to 5 to 7 days, which greatly improves the user experience.

[0202] The second magnetic field assembly 421 is arranged below the bottom wall of the inner barrel 318, and its structure is substantially consistent with the first magnetic field assembly 411, and is arranged in a mirror image relative to the fresh-keeping storage space 330. That is, the second magnetic source sheet 424 is located above the second magnetic conductive plate 423, and the area where the second magnetic conductive plate 423 contacts the second magnetic source sheet 424 and the surface of the second magnetic source sheet 424 are also configured to have a flatness that meets the requirements, and the tolerance requirement for the flatness is as small as possible, for example, less than 0.1mm. The two can fit tightly to achieve zero gap matching, thereby improving the uniformity of the magnetic field.

[0203] Fig.33 4 is a schematic diagram of the bottom of the barrel of the fresh-keeping storage container 30 according to an embodiment of the present invention. The second magnetic conductive plate 423 extends outward around the corresponding area of ​​the second magnetic source sheet 424 to form an extension portion 4231. The extension portion 4231 and the main body of the first magnetic conductive plate 413 and the first magnetic source sheet 414 abut against each other to form a step surface. That is, the extension portion 4231 of the second magnetic conductive plate 423 protrudes upward relative to the second magnetic source sheet 424, and is used to cooperate with the barrel and / or the magnetic field connector 431. The protruding height of the extension portion 4231 of the second magnetic conductive plate 423 can be greater than the thickness of the second magnetic source sheet 424.

[0204] When the second magnetic conductive plate 423 is connected to the magnetic field connector 431, the extension 4231 may not protrude, forming a gap to make way, that is, at the position of the gap, the extension 4231 is flush with the main body of the central area of ​​the second magnetic conductive plate 423, or the protrusion height is less than other positions of the extension 4231. The magnetic field connector 431 forms a flange facing the second magnetic conductive plate 423 at the bottom, and the flange is used to reliably contact the gap position of the second magnetic conductive plate 423 to form a reliable magnetic connection. The flange of the magnetic field connector 431 can be fixed by means of screws, screw holes, etc. to ensure a firm connection. The flange of the magnetic field connector 431 is also required to have a certain gap from the side of the second magnetic source sheet 424 to form a magnetic gap. Using the above-mentioned gap, after the magnetic field connector 431 is connected to the second magnetic conductive plate 423, the magnetic field connector 431 does not affect the connection between the second magnetic conductive plate 423 and the barrel 310 in the thickness direction.

[0205] In the embodiment where the second electromagnetic coil 425 is provided, the second electromagnetic coil 425 can be located at the center of the first magnetic source sheet 414 and the second magnetic source sheet 424, respectively. The bottom surface of the inner barrel 318 is provided with a coil receiving groove for placing the second electromagnetic coil 425 and a cable receiving groove for receiving the lead-out cable of the second electromagnetic coil 425. The shape of the coil receiving groove is adapted to the shape of the second electromagnetic coil 425, and the groove depth of the coil receiving groove is adapted to the thickness of the second electromagnetic coil 425, so as to ensure that the second electromagnetic coil 425 can reliably abut against the second magnetic source sheet 424.

[0206] The second magnetic conductive plate 423 can be connected to the inner barrel body by screws 4232 and buckles 4233, wherein the connection positions of the screw holes and the buckles 4233 are both on the extension 4231 of the second magnetic conductive plate 423. The screws 4232 and buckles 4233 ensure that the second magnetic conductive plate 423 can be reliably connected to the barrel body 310. A heat preservation plate can also be provided below the second magnetic conductive plate 423 (the heat preservation plate is hidden in the figure to show the second magnetic conductive plate 423). The lower side of the heat preservation plate is the bottom wall of the barrel shell (which can be a partition or a wall in the storage room).

[0207] Fig.34 is a cross-sectional view of a drawer 320 of a fresh-keeping storage container 30 according to an embodiment of the present invention; Fig.35 360 is a schematic diagram of a tray 360 in a drawer of a fresh-keeping storage container 30 according to an embodiment of the present invention. Since the refrigeration airflow directly contacts the drawer bottom plate 322 in the cold transmission section, in order to avoid the situation where the temperature at the bottom of the drawer is too low. The fresh-keeping storage container 30 of this embodiment is also provided with a tray 360 inside the drawer 320. The tray 360 is placed inside the drawer 320 and is used to hold the stored objects. A plurality of support portions 3601 are formed on the bottom plate of the tray 360, and the support portions 3601 can be legs or support bars and are arranged to protrude downward. The tray 360 uses the support portions 3601 to contact the drawer bottom plate 322, so that there is a certain gap between the bottom plate of the tray 360 and the bottom plate of the drawer, so as to avoid the stored objects directly contacting the drawer bottom plate 322 and causing the temperature to be too low. The support portion 3601 can be arranged at a position close to the edge of the tray bottom plate.

[0208] In some embodiments, the bottom plate of the tray 360 can be configured as a concave-convex surface 3602, so that the part of the stored object can also have a gap at the bottom of the tray. For example, the concave-convex surface 3602 of the tray bottom plate can be formed by mutually spaced convex strips and grooves extending in the front and rear directions.

[0209] The top of the side plate of the tray 360 may be provided with a flange 3603 extending outward. The side wall of the drawer may be provided with a convex strip 3241 located at the lower side of the flange. The height of the tray may be one-third to one-half of the overall height of the drawer, that is, the convex strip 3241 is provided at a height position of one-third to one-half of the inner side wall of the drawer. The top surface of the flange 3603 may abut against the lower surface of the convex strip 3241, thereby preventing the stored objects from falling into the gap between the tray 360 and the drawer 320, and at the same time, it can also ensure that the tray 360 can be placed more stably in the drawer 320. In some other embodiments, the convex strip 3241 can also be used to place a shelf (not shown in the figure), and the shelf is used to further separate the fresh-keeping storage space 330, so that the stored objects can be placed more conveniently. The shelf itself may also be provided with a magnetic source component, thereby further improving the effective magnetic field strength of the storage space.

[0210] In some embodiments, the side panels of the tray 360 can be tilted, that is, gradually expanded from bottom to top. This structure can make the tray 360 have a larger opening, which is convenient for taking and placing stored objects. On the other hand, the tray 360 can also have a larger gap with the drawer to ensure that the stored objects are evenly cooled.

[0211] One or more hand grips 3604 (for example, holes for fingers to be inserted into) may be provided on the side walls of the tray 360 to facilitate the user to take the tray out of the drawer for cleaning.

[0212] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A fresh-keeping storage container, having a fresh-keeping storage space for placing stored objects, and comprising: A magnetic field device, comprising one or more magnetic field components and configured to form a magnetic field in the fresh-keeping storage space; and Each of the magnetic field components includes a magnetic source sheet and a magnetic conductive plate, wherein the magnetic conductive plate includes a planar area, and the magnetic source sheet is bonded to the planar area, wherein the flatness tolerance of the planar area is less than a set tolerance threshold, so that the magnetic source sheet as a whole is tightly bonded to the magnetic conductive plate.

2. The fresh-keeping storage container according to claim 1, wherein The tolerance threshold is set to 1 mm, 0.1 mm or 0.05 mm.

3. The fresh-keeping storage container according to claim 1, wherein The magnetic conductive plate extends outward around the plane area to form an extension portion; at least a portion of the extension portion protrudes from the plane area toward one side of the magnetic source sheet, so that at least a portion of the extension portion forms a step with the plane area; The outer periphery of the magnetic source piece and the step have a set distance.

4. The fresh-keeping storage container according to claim 3, wherein The protruding height of the protruding section of the extension portion is greater than the thickness of the magnetic source sheet.

5. The fresh-keeping storage container according to claim 1, further comprising: a barrel having a forward opening; A drawer is pullable and arranged in the barrel body; and the magnetic field device includes a first magnetic field component and a second magnetic field component arranged in opposite side walls of the barrel body, and the magnetic source sheets in the first magnetic field component and the second magnetic field component are close to the drawer, and the magnetic conductive sheets in the first magnetic field component and the second magnetic field component are located on the outside of the magnetic source sheets.

6. The fresh-keeping storage container according to claim 5, wherein The first magnetic field component is disposed on the top of the barrel, the second magnetic field component is disposed on the bottom of the barrel, and An internal air path for cooling air flow is provided above the magnetic conductive plate of the first magnetic field assembly; The barrel body is provided with a protrusion on the top surface of the inner barrel body below the first magnetic field component, and the protrusion is used to support the magnetic source sheet of the first magnetic field component, so that there is an air gap between the magnetic source sheet of the first magnetic field component and the top surface of the inner barrel body.

7. The fresh-keeping storage container according to claim 6, wherein The protrusions are a plurality of convex ribs arranged vertically and horizontally, and the size of the air gap is set to 1 mm to 3 mm.

8. The fresh-keeping storage container according to claim 6, wherein: The magnetic field device also includes: Two magnetic field connectors connect the magnetic conductive plates of the first magnetic field assembly and the second magnetic field assembly from the lateral sides of the barrel.

9. The fresh-keeping storage container according to claim 6, wherein: Each of the magnetic field assemblies further comprises: The electromagnetic coil is arranged on the side of the magnetic source sheet opposite to the magnetic conductive plate, and The magnetic source sheet is a permanent magnetic sheet with uniform magnetization; the magnetic field device is configured to form a magnetic field with an effective magnetic field strength range of 10-100GS and an effective magnetic field spacing range of 60-240mm in the fresh-keeping storage space.

10. A refrigerator, comprising: A fresh-keeping storage container according to any one of claims 1 to 9.

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