Freshness retention device by magnetic field and air-cooled cooling equipment

Abstract

The present invention provides a magnetic field freshness preservation device and an air-cooled cooling device. The magnetic field freshness preservation device includes a drawer container, a drawer, a magnet unit, and a waterproof structure. The drawer container has an opening at the front side, the drawer is slidably attached within the drawer container, the magnet unit includes a first magnet and a second magnet arranged on both sides of the drawer container, the magnet mounting cavity includes a first mounting cavity for arranging the first magnet and a second mounting cavity for arranging the second magnet, and both the first mounting cavity and the second mounting cavity allow airflow to pass through to cool the first magnet and the second magnet. The waterproof structure provides waterproofing to the magnet unit. The magnetic field freshness preservation device not only improves the utilization rate of the magnetic field, but also avoids the situation in which the magnet is corroded by water.

Description

Technical Field

[0001] The present invention belongs to the technical field of freshness preservation equipment, and specifically provides a freshness preservation device by magnetic field and an air-cooled cooling device.

Background Art

[0002] It has been discovered through theoretical research that the magnetic field can have a significant impact on the formation of ice crystals during the refrigeration process and can lower the freezing temperature of food ingredients.

[0003] In order to achieve the purpose that food ingredients are not frozen in low-temperature freshness preservation, currently, there are manufacturers that deploy electromagnetic coils in cooling equipment (such as refrigerators) to supply a magnetic field to the food ingredients in the cooling equipment through the electromagnetic coils.

[0004] However, when external water or moisture enters the electromagnetic coil and cannot be discharged in a timely manner, the electromagnetic coil will be corroded, and a situation will occur where the electromagnetic coil and other structures are electrically connected, resulting in a decline in the performance of the electromagnetic coil.

Summary of the Invention

Problems to be Solved by the Invention

[0005] One object of the present invention is to provide a new freshness preservation device by magnetic field that guarantees the performance of the electromagnetic coil by preventing the magnet from being corroded by water.

[0006] Another object of the present invention is to improve the magnetic field freshness preservation performance of the freshness preservation device by magnetic field.

[0007] A further object of the present invention is to provide a magnetic field with a uniform intensity to the freshness preservation device by magnetic field.

Means for Solving the Problems

[0008] To achieve the above object, the present invention provides a freshness retention device using a magnetic field. The freshness retention device using a magnetic field includes a drawer container, a drawer, a magnet unit, a magnet mounting cavity, and a waterproof structure. The front side of the drawer container has an opening. The drawer is slidably mounted within the drawer container. The magnet unit includes a first magnet and a second magnet disposed on both sides of the drawer container. The magnet mounting cavity includes a first mounting cavity for disposing the first magnet and a second mounting cavity for disposing the second magnet. Both the first mounting cavity and the second mounting cavity are configured to cool the first magnet and the second magnet by allowing the passage of air flow. The waterproof structure waterproofs the magnet unit.

[0009] Preferably, the first magnet and the second magnet are each an electromagnetic coil, and the waterproof structure includes a waterproof layer coated on the electromagnetic coil.

[0010] Preferably, the electromagnetic coil is a coil wound with enameled wire.

[0011] Preferably, the first magnet and the second magnet are each an electromagnetic coil. A first wire lead-out hole is provided in the first mounting cavity. The first wire lead-out hole allows the lead wire of the first magnet to pass through and enables the outflow of liquid in the first mounting cavity. A second wire lead-out hole is provided in the second mounting cavity. The second wire lead-out hole allows the lead wire of the second magnet to pass through and enables the outflow of liquid in the second mounting cavity.

[0012] Preferably, a first annular groove is provided on the bottom wall of the first mounting cavity, the first magnet is mounted in the first annular groove, and the first wire drawing hole is provided at one corner of the first annular groove, and / or a second annular groove is provided on the bottom wall of the second mounting cavity, the second magnet is mounted in the second annular groove, and the second wire drawing hole is provided at one corner of the second annular groove.

[0013] Preferably, the first air inlet of the first mounting cavity is provided at the corner of the first annular groove facing the first wire drawing hole, and / or the second air inlet of the second mounting cavity is provided at the corner of the second annular groove facing the second wire drawing hole, and / or the range of the possible values of the included angle between each of the first wire drawing hole and the second wire drawing hole and the horizontal plane is 0 to 45°.

[0014] Preferably, the freshness preservation device by the magnetic field further includes a heat preservation plate arranged at the bottom side of the drawer container. The heat preservation plate is provided with a drain hole, and the height of each part of the heat preservation plate gradually decreases towards the drain hole. The heat preservation plate receives the liquid discharged from the first wire drawing hole and the second wire drawing hole.

[0015] Preferably, the freshness preservation device by the magnetic field further includes a water receiving container arranged below the drawer container. The water receiving container receives the liquid falling from the drain hole.

[0016] Preferably, the freshness preservation device by the magnetic field includes a top cover plate and a bottom cover plate. The top cover plate is arranged on the top side of the drawer container, and the first mounting cavity is formed between the top cover plate and the top wall of the drawer container. The bottom cover plate is arranged on the bottom side of the drawer container, and the second mounting cavity is formed between the bottom cover plate and the bottom wall of the drawer container. and / or The magnet unit further includes a first magnetic flux permeable member, a second magnetic flux permeable member, and a magnetic flux permeable connection member. The first magnetic flux permeable member is mounted in the first mounting cavity to prevent the magnetic field generated by the first magnet from leaking to the outside. The second magnetic flux permeable member is mounted in the second mounting cavity to prevent the magnetic field generated by the second magnet from leaking to the outside. The magnetic flux permeable connection member is disposed between the first magnetic flux permeable member and the second magnetic flux permeable member, and the magnetic flux permeable connection member is connected to the first magnetic flux permeable member and the second magnetic flux permeable member respectively.

[0017] Moreover, the present invention further provides an air-cooled cooling device. The air-cooled cooling device includes the freshness retention device by magnetic field according to any one of the above solutions, and the air-cooled cooling device can supply cold air to the freshness retention device by magnetic field.

Advantages of the Invention

[0018] Based on the above description, as can be understood by those skilled in the art, in the aforementioned solution of the present invention, by providing a waterproof structure for the magnet unit, the situation where the magnet contacts water or moisture is avoided, the situation where the magnet is corroded by water is avoided, and the use performance of the electromagnetic coil is guaranteed.

[0019] Furthermore, by winding the enameled wire as the electromagnetic coil and coating a waterproof layer on the outside of the electromagnetic coil, the electromagnetic coil has a two-layer waterproof structure and has better waterproof performance. At the same time, since the coil structure wound with the enameled wire is compact, the first magnet and the second magnet have a small volume and also occupy less space.

[0020] Moreover, the first wire drawing hole can not only allow the lead wire of the first magnet to pass through, but also enable the liquid in the first mounting cavity to flow out, so that multiple uses by one hole are realized, the provision of another drain hole is avoided, and the structure of the freshness retention device by magnetic field is made simpler.

[0021] Furthermore, the first air inlet and the first wire lead-out hole are respectively provided at two opposite corners in the first annular groove, and the second air inlet and the second wire lead-out hole are respectively provided at two opposite corners in the second annular groove. Thus, under the restriction of the first annular groove and the second annular groove, the airflow blows the water or moisture in the first annular groove and the second annular groove onto the first wire lead-out hole and the second wire lead-out hole, and the water or moisture in the first annular groove and the second annular groove can be quickly discharged.

[0022] Furthermore, by disposing the first magnetic permeable member in the first mounting cavity, the first magnet can avoid leakage of the magnetic field to the outside by the first magnetic permeable member, and by disposing the second magnetic permeable member in the second mounting cavity, the second magnet can avoid leakage of the magnetic field to the outside by the second magnetic permeable member, thereby improving the utilization rate of the magnetic field. At the same time, the first magnetic permeable member and the second magnetic permeable member can further make the magnetic field strength in the extraction container uniform and provide a good freshness-keeping environment for the stored items in the extraction.

[0023] Based on the detailed description of the specific embodiments of the present invention with reference to the drawings below, those skilled in the art can more clearly understand the above and its objects, merits and features of the present invention.

[0024] As the solution means of the present invention is more clearly described, hereinafter, some embodiments of the present invention will be described with reference to the drawings. As can be understood by those skilled in the art, the components or elements denoted by the same reference numerals in different drawings are the same or similar, and the drawings of the present invention are not necessarily drawn to scale.

Brief Description of the Drawings

[0025]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Embodiments for Carrying Out the Invention

[0026] As can be understood by those skilled in the art, the embodiments described below are merely some embodiments of the present invention and not all embodiments of the present invention. The said some embodiments are for interpreting the technical principle of the present invention and not for limiting the protection scope of the present invention. Based on the embodiments according to the present invention, all other embodiments that those skilled in the art can make without creative efforts should still be included in the protection scope of the present invention.

[0027] It should be noted that in the description of the present invention, terms indicating directions or positional relationships such as "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings and are only for the purpose of facilitating the description, and do not necessarily indicate or imply that such devices or elements have a specific orientation and are configured or operated in a specific orientation, so they cannot be understood as limitations on the present invention. Also, the terms "first", "second", "third" are only for the purpose of describing the object and cannot be understood as indicating or implying relative importance.

[0028] Furthermore, it should be further noted that in the description of the present invention, unless there are separate clear regulations and limitations, the terms "attachment", "connection", "connection" should be understood in a broad sense. For example, they may be fixed connections, removable connections, or integral connections. Also, they may be mechanical connections or electrical connections. Also, they may be directly connected, indirectly connected through an intermediate medium, or a communication inside two elements. A person skilled in the art should be able to understand the specific meanings of the above terms in the present invention according to the specific situation.

[0029] FIG. 1 is an effect schematic diagram of an air-cooled cooling device in some embodiments of the present invention. The air-cooled cooling device includes a box body 100 and a freshness-keeping device 200 by magnetic field. The freshness-keeping device 200 by magnetic field is attached to the box body 100 and performs refrigeration and freshness-keeping on the stored items (including food ingredients, medicines, wines and beverages, biological reagents, colonies, chemical reagents, etc.).

[0030] In the present invention, the air-cooled cooling device includes a refrigerator, a freezer, and a cold-temperature storage.

[0031] FIG. 2 is a principle schematic diagram of the freshness-keeping device 200 by magnetic field in some embodiments of the present invention.

[0032] As shown in FIG. 2, in some embodiments of the present invention, the box body 100 includes a cooling chamber 110, a blowing passage 120, a return air passage 130, and a storage chamber (not shown). The cooling chamber 110 and the storage chamber communicate with each other through the blowing passage 120 and the return air passage 130 so that air circulates between the cooling chamber 110 and the storage chamber. The freshness preservation device 200 by magnetic field is disposed in the storage chamber.

[0033] Furthermore, in some embodiments of the present invention, there may be one storage chamber or a plurality of storage chambers. When there are a plurality of storage chambers, some of the storage chambers are refrigerating chambers, some of the storage chambers are variable temperature chambers, and some of the storage chambers are freezing chambers. At least one freshness preservation device 200 by magnetic field is disposed in the variable temperature chamber and / or the freezing chamber.

[0034] Continuing to refer to FIG. 2, in some embodiments of the present invention, the air-cooled cooling device further includes an evaporator 300 and a fan 400. The evaporator 300 is disposed in the cooling chamber 110 and cools the air in the cooling chamber 110. The fan 400 drives the air to circulate sequentially in the cooling chamber 110, the blowing passage 120, the storage chamber, and the return air passage 130.

[0035] Continuing to refer to FIG. 2, in some embodiments of the present invention, the freshness preservation device 200 by magnetic field includes a drawer container 210, a drawer 220, a magnet unit 230, a magnet mounting cavity 240, a top cover plate 250, a bottom cover plate 260, a heat insulation plate 270, and a water receiving container 280.

[0036] The drawer 220 is slidably mounted within the drawer container 210 and houses the stored items. The magnet unit 230 supplies a magnetic field to the stored items within the drawer 220. The magnet mounting cavity 240 is used to mount the magnet unit 230. A part of the magnet mounting cavity 240 is formed between the top cover plate 250 and the top wall of the drawer container 210, and a part of the magnet mounting cavity 240 is also formed between the bottom cover plate 260 and the top wall of the drawer container 210. The heat insulation plate 270 is provided on the bottom side of the drawer container 210. The water receiving container 280 receives liquid (including condensed water, juice of the stored items, etc.).

[0037] Figure 3 is an isometric side cross-sectional view of the freshness preservation device 200 by magnetic field in some embodiments of the present invention.

[0038] As shown in FIGS. 2 and 3, the drawer container 210 has an opening 211 at the front side. The opening 211 enables the drawer 220 to be inserted into the drawer container 210 so that the drawer 220 is slidably mounted within the drawer container 210. A ventilation port 212 is further provided at the rear side of the drawer container 210, and the ventilation port 212 guides the air within the drawer container 210 to the ventilation passage 130 by communicating with the ventilation passage 130. Also, those skilled in the art may provide the ventilation port 212 on the left side, right side, lower side or upper side of the drawer container 210 as needed.

[0039] As shown in FIGS. 2 and 3, the drawer 220 has a front end cover 221. When the drawer 220 slides into the drawer container 210, the front end cover 221 abuts against the housing 213 at the front end of the drawer container 210, and there is a gap between the front end cover 221 and the housing 213 at the front end of the drawer container 210.

[0040] Figure 4 is an effect schematic diagram of the freshness preservation device 200 by magnetic field in some embodiments of the present invention. Figure 5 is a perspective view of the magnet unit 230 in FIG. 4.

[0041] As shown in FIGS. 4 and 5, by arranging the magnet unit 230 outside the drawer container 210, the fixing and wiring of the magnet unit 230 are facilitated. Of course, those skilled in the art may arrange the magnet unit 230 inside the drawer container 210 as needed.

[0042] As shown in FIGS. 4 and 5, the magnet unit 230 includes a first magnet 231 and a second magnet 232 arranged on both sides of the drawer container 210. Preferably, the first magnet 231 and the second magnet 232 are aligned with each other. More preferably, the first magnet 231 and the second magnet 232 are respectively arranged on the top side and the bottom side of the drawer container 210. Also, those skilled in the art may arrange the first magnet 231 and the second magnet 232 on the left side and the right side of the drawer container 210 respectively as needed.

[0043] Continuing to refer to FIGS. 4 and 5, the magnet unit 230 preferably further includes a first magnetic permeable member 233, a second magnetic permeable member 234, and a magnetic permeable connecting member 235. The first magnetic permeable member 233 corresponds to the first magnet 231, the second magnetic permeable member 234 corresponds to the second magnet 232, and the magnetic permeable connecting member 235 connects the first magnetic permeable member 233 and the second magnetic permeable member 234.

[0044] In the present invention, the first magnetic permeable member 233, the second magnetic permeable member 234, and the magnetic permeable connecting member 235 prevent the magnetic fields of the first magnet 231 and the second magnet 232 from leaking to the outside. That is, the magnetic fields generated by the first magnet 231 and the second magnet 232 are restricted. Specifically, by restricting the magnetic fields generated by the first magnet 231 and the second magnet 232 inside the drawer container 210, the magnetic fields are made to act on the stored items in the drawer 220 as much as possible. Therefore, in the present invention, by using the first magnetic permeable member 233, the second magnetic permeable member 234, and the magnetic permeable connecting member 235, the utilization rate of the magnetic fields of the first magnet 231 and the second magnet 232 is increased.

[0045] Preferably, the horizontal projection is such that all the stored objects in the drawer 220 can be acted upon by a magnetic field, and the first magnetic permeable member 233 and the first magnet 231 can jointly cover the stored objects in the drawer 220, and the second magnetic permeable member 234 and the second magnet 232 can similarly jointly cover the stored objects in the drawer 220.

[0046] Furthermore, the first magnetic permeable member 233, the second magnetic permeable member 234, and the magnetic permeable connection member 235 can make the magnetic field intensity distribution more uniform so that the first magnet 231 and the second magnet 232 can supply a good magnetic field freshness retention environment to the stored objects in the drawer 220.

[0047] It should be noted that the first magnetic permeable member 233, the second magnetic permeable member 234, and the magnetic permeable connection member 235 may be any implementable magnetic permeable members, such as silicon steel sheets.

[0048] In some embodiments of the present invention, preferably, the first magnet 231 and the second magnet 232 of the present invention are both electromagnetic coils. More preferably, the first magnet 231 and the second magnet 232 are both coils wound with enameled wires. As can be understood by those skilled in the art, since the diameter of the enameled wire is smaller than the way the electric wire is coated with other insulating layers, the volume of the electromagnetic coil is also reduced.

[0049] FIG. 6 is a schematic diagram of the effect of the electromagnetic coil in some embodiments of the present invention being coated with a waterproof layer.

[0050] As shown in FIG. 6, the freshness retention device 200 by magnetic field further includes a waterproof structure 290, and the waterproof structure 290 waterproofs the magnet unit 230. Specifically, the waterproof structure 290 includes a waterproof layer 291 coated on the electromagnetic coils (the first magnet 231 and the second magnet 232). Preferably, the waterproof layer 291 may be coated on the first magnet 231 and the second magnet 232 by means such as varnish dipping, mold sealing, spray forming, etc.

[0051] Furthermore, the enamel paints of the first magnet 231 and the second magnet 232 are waterproof paints, which block water outside the enamel paints, prevent water from contacting the enamel paints, and make the enamel paints of the first magnet 231 and the second magnet 232 a part of the waterproof structure 290.

[0052] Returning to FIGS. 2 and 3 for continued reference, the magnet mounting cavity 240 includes a first mounting cavity 241 and a second mounting cavity 242. The first mounting cavity 241 is used to arrange the first magnet 231 and the first magnetic flux permeable member 233, and the second mounting cavity 242 is used to arrange the second magnet 232 and the second magnetic flux permeable member 234. Both the first mounting cavity 241 and the second mounting cavity 242 are configured to cool at least the first magnet 231 and the second magnet 232 by allowing the passage of air flow.

[0053] Furthermore, the first mounting cavity 241 is formed between the top cover plate 250 and the top wall of the drawer container 210. Preferably, the top cover plate 250 surrounds the first mounting cavity 241 together with the top wall of the drawer container 210. The second mounting cavity 242 is formed between the bottom cover plate 260 and the bottom wall of the drawer container 210. Preferably, the bottom cover plate 260 surrounds the second mounting cavity 242 together with the bottom wall of the drawer container 210.

[0054] Continuing to refer to FIGS. 2 and 3, the first mounting cavity 241 has a first air inlet 2411 and a first air outlet 2412. The first mounting cavity 241 communicates with the air supply passage 120 through the first air inlet 2411, and the first mounting cavity 241 communicates with the drawer container 210 through the first air outlet 2412. Specifically, the first air outlet 2412 is aligned with the front end cover 221 of the drawer 220, so that the first mounting cavity 241 blows cold air onto the front end cover 221 and further returns the cold air into the drawer 220. More specifically, the first air outlet 2412 is formed in the housing 213 at the front end of the drawer container 210.

[0055] Continuing to refer to FIGS. 2 and 3, the second mounting cavity 242 has a second air inlet 2421 and a second air outlet 2422. The second mounting cavity 242 communicates with the air supply passage 120 through the second air inlet 2421, and the second mounting cavity 242 communicates with the drawer container 210 through the second air outlet 2422. Specifically, the second air outlet 2422 is formed on the bottom wall of the drawer container 210. The second mounting cavity 242 blows cold air onto the bottom wall of the drawer 220 through its second air outlet 2422.

[0056] Based on the above description, as can be understood by those skilled in the art, the freshness preservation device 200 by magnetic field of the present invention can avoid the cold air directly hitting the stored items in the drawer 220, and further avoid the situation where the stored items are frozen. At the same time, by using the magnet unit 230, the magnetic field generated by the magnet unit 230 can have a great influence on the formation of ice crystals in the refrigeration process and lower the freezing temperature of the stored items. In this way, it is allowed that the stored items are not frozen and can be stored at a lower temperature. Therefore, the air-cooled cooling device and the freshness preservation device 200 by magnetic field of the present invention can effectively avoid the situation where the stored items are frozen.

[0057] FIG. 7 is a front upper perspective view (the top cover plate is omitted) of the freshness preservation device 200 by magnetic field in some embodiments of the present invention, FIG. 8 is a front upper perspective view (the top cover plate and the magnet unit are omitted) of the freshness preservation device 200 by magnetic field in some embodiments of the present invention, FIG. 9 is a front lower perspective view (the bottom cover plate is omitted) of the freshness preservation device 200 by magnetic field in some embodiments of the present invention, and FIG. 10 is an effect schematic diagram of the second mounting cavity in some embodiments of the present invention. FIG. 11 is a front lower perspective view (the bottom cover plate and the magnet unit are omitted) of the freshness preservation device 200 by magnetic field in some embodiments of the present invention.

[0058] As shown in FIGS. 7 to 11, a first annular groove 2413 is formed in the first mounting cavity 241, and the first magnet 231 is mounted in the first annular groove 2413. A second annular groove 2323 is formed in the second mounting cavity 242, and the second magnet 232 is mounted in the second annular groove 2323.

[0059] As shown in FIG. 8, a first wire extraction hole 2414 is provided in the bottom wall of the first mounting cavity 241. The first wire extraction hole 2414 allows the lead wire of the first magnet 231 to pass through and enables the outflow of the liquid in the first mounting cavity 241. Preferably, the first wire extraction hole 2414 is provided at one corner of the first annular groove 2413. More preferably, the first air inlet 2411 is provided at the corner of the side wall of the first annular groove 2413 that faces the first wire extraction hole 2414. Preferably, the first wire extraction hole 2414 also communicates with the extraction container 210.

[0060] In addition to the first wire extraction hole 2414 also communicating with the extraction container 210, those skilled in the art may, if necessary, omit the formation of the first exhaust port 2412 and allow the air in the first mounting cavity 241 to enter the extraction container 210 through the first wire extraction hole 2414.

[0061] As shown in FIG. 10, a second wire extraction hole 2424 is provided in the bottom wall of the second mounting cavity 242. The second wire extraction hole 2424 allows the lead wire of the second magnet 232 to pass through and enables the outflow of the liquid in the second mounting cavity 242. Preferably, the second wire extraction hole 2424 is provided at one corner of the second annular groove 2423. More preferably, the second air inlet 2421 is provided at the corner of the side wall of the second annular groove 2423 that faces the second wire extraction hole 2424.

[0062] As can be understood by those skilled in the art, the first air inlet 2411 and the first wire extraction hole 2414 are respectively provided at two opposite corners on the first annular groove 2413, and the second air inlet 2421 and the second wire extraction hole 2424 are respectively provided at two opposite corners on the second annular groove 2423. Thus, the airflow can blow the water or moisture in the first annular groove 2413 and the second annular groove 2423 onto the first wire extraction hole 2414 and the second wire extraction hole 2424 under the restriction of the first annular groove 2413 and the second annular groove 2423. In this way, the water or moisture in the first annular groove 2413 and the second annular groove 2423 can be quickly discharged.

[0063] Preferably, the height of the bottom surface of the first annular groove 2413 gradually decreases towards the first wire extraction hole 2414. In this way, the liquid in the first annular groove 2413 flows towards the first wire extraction hole 2414 under the action of its own gravity and finally flows out from the first mounting cavity 241. Similarly, the height of the bottom surface of the second annular groove 2423 gradually decreases towards the second wire extraction hole 2424. In this way, the liquid in the second annular groove 2423 flows towards the second wire extraction hole 2424 under the action of its own gravity and finally flows out from the second mounting cavity 242.

[0064] More preferably, there is a gap between the bottom surface of the first annular groove 2413 and the bottom surface of the first magnet 231, which prevents the liquid in the first annular groove 2413 from immersing the first magnet 231 and also prevents the first magnet 231 from obstructing the flow of the liquid in the first annular groove 2413. Similarly, there is a gap between the bottom surface of the second annular groove 2423 and the bottom surface of the second magnet 232, which prevents the liquid in the second annular groove 2423 from immersing the second magnet 232 and also prevents the second magnet 232 from obstructing the flow of the liquid in the second annular groove 2423.

[0065] Furthermore, the range of the possible values of the included angle between each of the first wire extraction hole 2414 and the second wire extraction hole 2424 and the horizontal plane is 0 to 45°. In this way, when the first wire extraction hole 2414 and the second wire extraction hole 2424 can lead out the liquid in the first annular groove 2413 and the second annular groove 2423, it facilitates the extraction of the lead wires of the first magnet 231 and the second magnet 232.

[0066] Returning to continue referring to FIG. 2, the heat preservation plate 270 is provided with a drain hole 271. Preferably, the drain hole 271 is provided at the central part of the heat preservation plate 270, and the height of each part of the heat preservation plate 270 gradually decreases towards the drain hole 271. In this way, the liquid on the heat preservation plate 270 can quickly collect liquid at the drain hole 271.

[0067] In some embodiments of the present invention, the first wire extraction hole 2414 penetrates to the outside of the extraction container 210 so that the liquid flowing out of the first wire extraction hole 2414 flows along the outer surface of the side wall of the extraction container 210 to the heat preservation plate 270. Preferably, a drainage groove for guiding the liquid to flow to the heat preservation plate 270 is provided on the outer surface of the side wall of the extraction container 210. The second wire extraction hole 2424 faces the direction of the heat preservation plate 270 so that the liquid flowing out of the second wire extraction hole 2424 flows directly to the heat preservation plate 270.

[0068] Continuing to refer to FIG. 2, the drain hole 271 is aligned with the water receiving container 280 so that the water flowing out of the drain hole 271 directly falls into the water receiving container 280.

[0069] In the present invention, the water receiving container 280 may be a single structure disposed below the heat insulating plate 270, for example, a water receiving tray fixedly connected to the heat insulating plate 270 or the drawer container 210, and the water receiving container 280 may also be a part of another member. For example, the freshness maintaining device 200 by magnetic field further includes a housing, and the water receiving container 280 is a part of the housing. Specifically, the water receiving container 280 is a concave groove formed on the bottom wall of the housing. The water receiving container 280 may also be a pit formed on the inner box bottom wall of the storage chamber.

[0070] Preferably, a drain pipe is connected to the water receiving container 280, so that the liquid inside it is discharged outside the air-cooled cooling device through the drain pipe.

[0071] More preferably, the water receiving container 280 is provided with a water level detection sensor and a switch. The water level detection sensor detects the liquid level of the liquid in the water receiving container 280, and the switch is used to cut off the communication between the water receiving container 280 and the drain pipe. When the liquid level of the liquid in the water receiving container 280 does not reach the set water level, the switch is turned off, and the liquid in the water receiving container 280 does not flow out. When the liquid level of the liquid in the water receiving container 280 reaches the set water level, the switch is turned on, and the liquid in the water receiving container 280 flows into the drain pipe.

[0072] In another embodiment of the present invention, those skilled in the art may also arrange heat insulating plates on the top wall and / or the left side wall and / or the right side wall and / or the rear side wall of the drawer container 210 as needed.

[0073] The heat insulating plate in the present invention may be a structure made of any feasible material such as foam or foam.

[0074] Based on the above description, as can be understood by those skilled in the art, the freshness preservation device 200 by magnetic field of the present invention can cool the magnet unit 230, timely discharge the condensed water in the cooling process, and avoid the situation where the magnet unit 230 is damaged by being immersed in the condensed water. In addition, the magnet unit 230 of the present invention increases the utilization rate of the magnetic field while reducing energy consumption.

[0075] So far, the technical solutions of the present invention have been described using multiple foregoing embodiments. However, as can be easily understood by those skilled in the art, the protection scope of the present invention is not limited to these specific embodiments. On the premise of not departing from the technical principle of the present invention, those skilled in the art may split or combine the technical solutions in each of the above embodiments, and may also make equivalent changes or substitutions to the related technical features. Any changes, substitutions by equivalents, improvements, etc. made within the technical idea and / or technical principle of the present invention are all included within the protection scope of the present invention.

Claims

1. A freshness preservation device by magnetic field, comprising: a drawer container, a drawer, a magnet unit, a magnet mounting cavity, and a waterproof structure; the front side of the drawer container has an opening; the drawer is slidably mounted in the drawer container; the magnet unit includes a first magnet and a second magnet disposed on both sides of the drawer container; the magnet mounting cavity includes a first mounting cavity for disposing the first magnet and a second mounting cavity for disposing the second magnet, and both the first mounting cavity and the second mounting cavity are configured to cool the first magnet and the second magnet by allowing the passage of air flow; the waterproof structure waterproofs the magnet unit; the first magnet and the second magnet are respectively electromagnetic coils; a first wire lead-out hole is provided on the bottom wall of the first mounting cavity, the first wire lead-out hole penetrates the lead wire of the first magnet and allows the outflow of liquid in the first mounting cavity; a second wire lead-out hole is provided on the bottom wall of the second mounting cavity, the second wire lead-out hole penetrates the lead wire of the second magnet and allows the outflow of liquid in the second mounting cavity, a freshness preservation device by magnetic field.

2. the first magnet and the second magnet are respectively electromagnetic coils; the waterproof structure includes a waterproof layer coated on the electromagnetic coil, the freshness preservation device by magnetic field according to Claim 1.

3. the electromagnetic coil is a coil wound with enameled wire, the freshness preservation device by magnetic field according to Claim 2.

4. a first annular groove is formed in the first mounting cavity, the first magnet is mounted in the first annular groove, and the first wire lead-out hole is provided at one corner of the first annular groove, and / or a second annular groove is formed in the second mounting cavity, the second magnet is mounted in the second annular groove, and the second wire lead-out hole is provided at one corner of the second annular groove, the freshness preservation device by magnetic field according to Claim 1.

5. the first air inlet of the first mounting cavity is provided at the corner of the first annular groove opposite to the first wire lead-out hole, and / or The second air inlet of the second mounting cavity is provided at a corner of the second annular groove facing the second wire drawing hole, and / or The magnetic field freshness preservation device according to claim 4, wherein each of the first wire drawing hole and the second wire drawing hole is inclined with respect to a horizontal plane, and an included angle between each of the first wire drawing hole and the second wire drawing hole and the horizontal plane is 45° or less.

6. The magnetic field freshness preservation device further includes a heat preservation plate disposed at the bottom side of the drawing container. The heat preservation plate is provided with a drain hole, and the height of each part of the heat preservation plate gradually decreases toward the drain hole. The magnetic field freshness preservation device according to claim 4 or 5, wherein the heat preservation plate receives the liquid discharged from the first wire drawing hole and the second wire drawing hole.

7. The magnetic field freshness preservation device according to claim 6, further comprising a water receiving container disposed below the drawing container, wherein the water receiving container receives the liquid dropped from the drain hole.

8. The magnetic field freshness preservation device includes a top cover plate and a bottom cover plate. The top cover plate is disposed on the top side of the drawing container, and the first mounting cavity is formed between the top cover plate and the top wall of the drawing container. The bottom cover plate is disposed on the bottom side of the drawing container, and the second mounting cavity is formed between the bottom cover plate and the bottom wall of the drawing container. and / or The magnet unit further includes a first magnetic permeable member, a second magnetic permeable member, and a magnetic permeable connecting member. The first magnetic permeable member is mounted in the first mounting cavity to prevent the magnetic field generated by the first magnet from leaking to the outside. The second magnetic permeable member is mounted in the second mounting cavity to prevent the magnetic field generated by the second magnet from leaking to the outside. The magnetic permeable connecting member is disposed between the first magnetic permeable member and the second magnetic permeable member, and the magnetic permeable connecting member is connected to the first magnetic permeable member and the second magnetic permeable member respectively. The magnetic field freshness preservation device according to any one of claims 1 to 5.

9. An air-cooled cooling device, The air-cooled cooling device includes the magnetic field freshness preservation device according to any one of claims 1 to 5, and is capable of supplying cold air to the magnetic field freshness preservation device.

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