Refrigeration appliance with magnetic field freshness preserving device

Abstract

The application provides a refrigeration equipment with a magnetic field fresh-keeping device, which comprises a cabinet, an inner part of the cabinet is defined as a storage compartment, a back part of the storage compartment is provided with a refrigeration air duct for providing a refrigeration air flow; the magnetic field fresh-keeping device is arranged in the storage compartment and is provided with a magnetic field component for applying a magnetic field to a fresh-keeping space in the magnetic field fresh-keeping device. The magnetic field fresh-keeping device comprises a barrel, a back part of the barrel is formed with an air inlet and an air return port which are communicated with the refrigeration air duct; a drawer is arranged in the barrel in a pullable manner, and an inner part of the drawer is defined as the fresh-keeping space; and the magnetic field fresh-keeping device is configured to form a surrounding air duct for making the air flow flow through the top wall of the barrel, the front baffle of the drawer and the space below the bottom plate of the drawer in sequence and return to the air return port, so as to cool the fresh-keeping space. The refrigeration equipment provided by the application reduces the temperature fluctuation of the fresh-keeping space and improves the fresh-keeping effect of food in the fresh-keeping space.

Description

TECHNICAL FIELD

[0001] The present application relates to a refrigeration device, and particularly provides a refrigeration device with a magnetic field fresh-keeping device. BACKGROUND

[0002] The existing refrigeration device (including refrigerator, freezer, refrigerator, etc.) is prone to cause juice loss of meat when storing meat, fish, shrimp and other food materials, and further cause deterioration of fish meat and shrimp meat, resulting in loss of nutrients and poor taste.

[0003] Now it is found that the magnetic field can inhibit the growth of microorganisms and mold, and prolong the storage period of food materials. Therefore, the magnetic field can be used to assist in storing food materials, so as to achieve the purpose of prolonging the storage period of food materials. When using the magnetic field to assist in storing food materials, the magnetic field limits the free path of water molecules to a certain extent, which is specifically manifested as the breaking of hydrogen bonds in the water molecule cluster. In the phase change process, the crystal nucleus growth is inhibited, the growth rate of ice crystals is higher than the migration rate of water molecules, the generated ice crystals are small, the damage to cells is small, the loss rate of juice in food materials is reduced, and the nutrients and taste of food materials can be better preserved.

[0004] In order to realize fresh-keeping storage, the magnetic field needs to be matched with the storage temperature. Through actual test, in the state of non-freezing fresh-keeping storage, it is best to keep the storage temperature at 5-8 degrees Celsius, and the cooling speed also needs to be relatively stable. However, in the process of applying the magnetic field to the fresh-keeping space, the magnetic field generating device (generally an electromagnetic device) will generate heat, which will cause temperature fluctuation and affect the storage quality. SUMMARY

[0005] An object of the present application is to provide a refrigeration device with a magnetic field fresh-keeping device for improving refrigeration performance.

[0006] A further object of the present application is to make the refrigeration device with the magnetic field fresh-keeping device compact in structure and increase the use volume.

[0007] A further object of the present application is to make the temperature of the fresh-keeping space of the magnetic field fresh-keeping device uniform.

[0008] To achieve the above object, the present application provides a refrigeration device with a magnetic field fresh-keeping device, which comprises:

[0009] A cabinet body, which defines a storage compartment in the cabinet body, and a refrigeration air duct for providing refrigeration air flow is arranged at the back of the storage compartment;

[0010] A magnetic field fresh-keeping device arranged in the storage compartment and provided with a magnetic field assembly for applying a magnetic field to the fresh-keeping space inside the magnetic field fresh-keeping device.

[0011] The magnetic field preservation device comprises: a barrel body, a rear portion of which is formed with an air inlet and an air return connected with a refrigeration air duct; a drawer, which is arranged in the barrel body in a pullable manner, and defines a preservation space in the drawer; and the magnetic field preservation device is configured to form a surrounding air duct for making air flow from the air inlet, through a top wall of the barrel body, a front baffle of the drawer, a space below a bottom plate of the drawer, and return to the air return, so as to cool the preservation space.

[0012] Optionally, the top wall of the barrel body comprises:

[0013] a drawer top cover, which is opposite to a top opening of the drawer;

[0014] a shell plate, which is arranged above the drawer top cover and has a first interval with the drawer top cover;

[0015] a top heat insulation plate, which is arranged in the first interval, a space between the top heat insulation plate and the drawer top cover forms a top section of the surrounding air duct flowing through the top wall of the barrel body, and a plurality of through holes are further arranged on the drawer top cover to make the preservation space communicate with the top section through the through holes.

[0016] Optionally, a plurality of air guide ribs are further formed on a side of the top heat insulation plate facing the drawer top cover, so as to guide the air flow in the top section through the air guide ribs, so that the air flow flows uniformly through the top section.

[0017] Optionally, the magnetic field assembly comprises a first magnetic guide plate arranged on the drawer top cover and a first magnetic member, and the first magnetic member is flat and arranged in close contact with the first magnetic guide plate.

[0018] Optionally, the magnetic field assembly comprises a second magnetic guide plate arranged on the bottom wall of the barrel body and a second magnetic member, and the second magnetic member is flat and arranged in close contact with the second magnetic guide plate.

[0019] The first magnetic guide plate and the second magnetic guide plate are arranged opposite to each other, and the magnetic field assembly further comprises a magnetic guide tape arranged on the side wall of the barrel body and connecting the first magnetic guide plate and the second magnetic guide plate to form a ring-shaped magnetic guide path surrounding the drawer.

[0020] Optionally, the refrigeration equipment with the magnetic field preservation device further comprises a first temperature detection component and a second temperature detection component arranged in the drawer top cover respectively, the first temperature detection component is arranged at a position close to the air inlet, and the second temperature detection component is arranged at a position close to the front baffle of the drawer.

[0021] Optionally, the front baffle of the drawer comprises:

[0022] a middle partition plate;

[0023] an air duct member arranged on a side of the middle partition plate facing the preservation space and defining a front section of the surrounding air duct flowing through the front baffle together with the middle partition plate, and a top portion of the air duct member communicates with the front baffle air inlet of the top section.

[0024] The panel is arranged on the side of the partition opposite to the fresh-keeping space, and an air heat insulation space is formed between the panel and the partition.

[0025] Optionally, the top wall of the barrel further comprises:

[0026] The air guide member is arranged at the front end of the top wall of the barrel, the rear part of the air guide member has a first air guide opening in communication with the front end of the top section, the bottom part of the air guide member is opposite to the air inlet opening of the front baffle and has a second air guide opening for communicating with the air inlet opening of the front baffle, so as to guide the air flow of the top section into the front section, and the bottom part of the air guide member and the top part of the air duct member are respectively arranged as inclined surfaces inclined downward from front to back.

[0027] Optionally, the drawer bottom plate is arranged spaced apart from the bottom wall of the barrel to form a lower space as a bottom section of the surrounding air duct, and the front baffle air outlet opening is arranged at the position opposite to the bottom end of the air duct member, so as to communicate the bottom section through the front baffle air outlet opening.

[0028] Optionally, the rear wall of the barrel is arranged spaced apart from the back of the storage compartment, the air return opening is arranged at the middle part of the rear wall, and the top end of the rear wall is inclinedly extended to the rear end of the top wall of the barrel, and the air inlet opening is arranged on the inclined extension surface.

[0029] Based on the foregoing description, those skilled in the art can understand that, in the foregoing technical solutions of the present application, the magnetic field fresh-keeping device is arranged in the storage compartment of the refrigeration equipment and is provided with a magnetic field assembly for applying a magnetic field to the fresh-keeping space inside the magnetic field fresh-keeping device, the magnetic field helps to improve the storage quality, can shorten the freezing time, reduce the juice loss rate and nutrient loss of food, reduce the number of microorganisms and bacteria, and prolong the fresh-keeping period. Moreover, the magnetic field fresh-keeping device is configured to form a surrounding air duct for air flow to flow from the air inlet opening to the top wall of the barrel, the front baffle of the drawer, the lower space of the drawer bottom plate, and then return to the air return opening, so as to refrigerate the fresh-keeping space. The refrigeration of the fresh-keeping space by the surrounding air duct can also timely take away the heat generated by the magnetic member (such as an electromagnetic element) during operation, avoiding temperature fluctuations in the fresh-keeping space, and comprehensively improving the fresh-keeping effect of the food in the fresh-keeping space by the temperature and the magnetic field.

[0030] Further, the above-mentioned surrounding air duct can also avoid the cold air directly blowing on the food in the fresh-keeping space, avoid the temperature of the food dropping too fast, avoid the quality of the frozen food being reduced, help to uniformly cool, take away the heat generated by the electromagnetic coil and other magnetic members, and reduce the temperature fluctuations.

[0031] Further, the barrel of the magnetic field fresh-keeping device and the structure of the drawer of the refrigeration equipment of the present application are optimized and improved, the structure is compact, and the occupation of the storage space is reduced.

[0032] The above and other objects, advantages and features of the present application will become more apparent from the following detailed description of specific embodiments thereof, when taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the present application, some embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that the components or parts denoted by the same reference signs in different drawings are the same or similar; the drawings of the present application are not necessarily drawn to scale with respect to each other.

[0034] In the drawings:

[0035] Figure 1 is a schematic view of a refrigeration appliance according to an embodiment of the present application;

[0036] Figure 2 is a schematic view of a magnetic field preservation device in a refrigeration appliance according to an embodiment of the present application;

[0037] Figure 3 is a schematic view of a magnetic field preservation device in a refrigeration appliance according to an embodiment of the present application; Figure 2 is a schematic view of the magnetic field preservation device from another viewing angle;

[0038] Figure 4 is a side sectional view of a magnetic field preservation device in a refrigeration appliance according to an embodiment of the present application;

[0039] Figure 5 is a schematic view of a magnetic field preservation device in a refrigeration appliance according to an embodiment of the present application; Figure 4 is a close-up view of area A in

[0040] Figure 6 is a close-up view of area B in Figure 4

[0041] Figure 7 is a schematic view of a top section of a wrap-around air duct of a magnetic field preservation device in a refrigeration appliance according to an embodiment of the present application;

[0042] Figure 8 is an exploded view of components of a drawer of a magnetic field preservation device in a refrigeration appliance according to an embodiment of the present application;

[0043] Figure 9 is a schematic view of an air guide of a magnetic field preservation device in a refrigeration appliance according to an embodiment of the present application; and

[0044] Figure 10 is a schematic view of a magnetic field assembly of a magnetic field preservation device in a refrigeration appliance according to an embodiment of the present application. DETAILED DESCRIPTION

[0045] ​Those skilled in the art should understand that the embodiments described below are only a part of the embodiments of the present application, and are intended to explain the technical principles of the present application, but not to limit the protection scope of the present application. Based on the embodiments provided by the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor shall fall within the protection scope of the present application.

[0046] It should be noted that in the description of the present application, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and other terms indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", "main", "secondary" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0047] In addition, it should be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] The refrigeration equipment of the present application includes a refrigerator, a freezer, and a refrigerator cabinet and other equipment for refrigerating and storing stored goods. In the drawings of the present embodiment, the refrigerator is taken as an example for introduction, and those skilled in the art can realize other refrigeration equipment such as a freezer and a refrigerator cabinet according to the introduction of the present embodiment. The refrigeration equipment of the present application will be described in detail below with reference to the drawings.

[0049] Figure 1 is a schematic view of a refrigeration equipment according to an embodiment of the present application; the refrigeration equipment 10 can be a refrigerator, and includes a cabinet 110, a door body 120, and a refrigeration system (not shown in the figure). At least one storage compartment 130 open at the front side can be defined in the cabinet 110, usually multiple, such as a refrigeration storage compartment, a freezing storage compartment, a variable-temperature storage compartment, and the like. The number and function of the specific storage compartment 130 can be configured according to the pre-requisite requirements.

[0050] The refrigeration equipment 10 can use air-cooled refrigeration to refrigerate the storage compartment 130. That is, a wind channel system is arranged in the cabinet 110, and the refrigeration air flow that has been exchanged heat by the heat exchanger 150 (evaporator) is sent to the storage compartment 130 through the air supply port by the fan 160, and then returns to the air duct through the air return port 232. Refrigeration is achieved. In some embodiments, the back of the storage compartment 130 is provided with a refrigeration air duct 140 for providing refrigeration air flow, and the heat exchanger 150 can be arranged in the refrigeration air duct 140 to exchange heat with the air flow. The fan 160 can also be arranged in the refrigeration air duct 140 to facilitate the circulation of the refrigeration air flow.

[0051] Optionally, the storage compartment can be multiple, and at least one of the multiple storage compartments is placed with the magnetic field fresh-keeping device 20. Those skilled in the art can configure a refrigeration system and a wind channel for each storage compartment as needed, for example, one heat exchanger 150 can be configured for one storage compartment, or one heat exchanger 150 can be configured for two or more storage compartments.

[0052] Since the cabinet, door body, and refrigeration system of such a refrigerator are known to those skilled in the art and easy to implement, those skilled in the art can select the refrigeration system and the wind channel system as needed. In order not to cover and obscure the application points of the present application, the cabinet 110, the door body 120, and the refrigeration system itself will not be described in detail hereinafter.

[0053] The magnetic field fresh-keeping device 20 is arranged in one storage compartment 130 and is provided with a magnetic field assembly for applying a magnetic field to the fresh-keeping space 23 inside itself. The strength of the magnetic field can be set to 1Gs-100Gs, and in the case of application to a frozen environment, the magnetic field strength range can be preferably 5-60GS, for example, about 20Gs; in the case of application to a refrigerated environment, the magnetic field strength range can be 20-160GS, and preferably can be 40-80Gs, for example, about 60Gs. The magnetic field assembly can use permanent magnet components or electromagnetic components, that is, use electromagnetic coils and permanent magnets to generate a magnetic field. In some embodiments, electromagnetic coils and permanent magnets can also be used in combination to generate a magnetic field.

[0054] Figure 2 is a schematic view of the magnetic field fresh-keeping device 20 in the refrigeration equipment 10 according to an embodiment of the present application;

[0055] Figure 3 is Figure 2 is a schematic view of the magnetic field fresh-keeping device 20 from another viewing angle. Figure 4 is a side sectional view of the magnetic field fresh-keeping device 20 in the refrigeration equipment 10 according to an embodiment of the present application. Figure 5 is Figure 4 is a local enlarged view of A in Figure 6 isFigure 4 A local enlarged view at B.

[0056] The magnetic field fresh-keeping device 20 can be provided as a drawer, for example, the magnetic field fresh-keeping device 20 can include a barrel 22 and a drawer 21. The rear of the barrel 22 forms an air inlet 231 and an air return 232 which are in communication with the refrigeration air duct 140. The drawer 21 is provided in the barrel 22 in a pullable manner, and the fresh-keeping space 23 is defined in the drawer 21, that is, the fresh-keeping space 23 in the drawer 21 can be controlled by a magnetic field and temperature to achieve a magnetic field fresh-keeping function.

[0057] The magnetic field fresh-keeping device 20 is configured to form a surrounding air duct that makes the air flow from the air inlet 231 to the air return 232 through the top wall 221 of the barrel 22, the front baffle 215 of the drawer 21, and the space below the drawer bottom plate in sequence to refrigerate the fresh-keeping space 23. The surrounding air duct enters the inside of the magnetic field fresh-keeping device 20 from the air inlet 231 at the top rear end of the magnetic field fresh-keeping device 20, passes through the top wall 221 of the barrel 22, enters the top end of the front baffle 215 of the drawer 21, flows through the front baffle 215 of the drawer 21, enters the space below the drawer bottom plate from the bottom, and then returns to the air return 232 at the rear wall 224 of the barrel 22 to complete the circulation of the air flow. The section of the surrounding air duct passing through the top wall 221 of the barrel 22, that is, the section at the top of the magnetic field fresh-keeping device 20 is referred to as a top section 241. The section of the surrounding air duct passing through the front baffle 215 of the drawer 21, that is, the section at the front of the magnetic field fresh-keeping device 20 is referred to as a front section 242. The section of the surrounding air duct passing through the space below the drawer bottom plate, that is, the section at the bottom of the magnetic field fresh-keeping device 20 is referred to as a bottom section 243. The surrounding air duct forms an air path that surrounds the fresh-keeping space 23 from front to back, effectively achieving uniform cooling.

[0058] The top wall 221 of the barrel 22 can include a drawer top cover 211, an outer shell plate 212, and a top heat insulation plate 213. The top wall 221 of the barrel 22 is sequentially provided from top to bottom with the outer shell plate 212, the top heat insulation plate 213, and the drawer top cover 211.

[0059] The air return 232 can be provided in the middle of the rear wall 224 of the barrel 22. The top end of the rear wall 224 extends obliquely to the rear end of the top wall 221 of the barrel 22, and the air inlet 231 is provided on the obliquely extending surface. The positions of the air inlet 231 and the air return 232 make the magnetic field fresh-keeping device 20 cooperate with the air duct of the refrigeration equipment 10 more smoothly, improving the air supply efficiency. In addition, the air inlet 231 is provided at the top end of the rear side of the drawer 21 and is obliquely provided, reducing the occupation of the air supply structure to the fresh-keeping space 23, and the structure is more compact and effective.

[0060] The drawer top cover 211 is opposite to the top opening of the drawer 21, and is used for closing the top space of the fresh-keeping space 23. The shell plate 212 is arranged above the drawer top cover 211 and has a first interval with the drawer top cover 211. The top heat insulation plate 213 is arranged in the first interval, and the space between the top heat insulation plate 213 and the drawer top cover 211 forms a top section 241 of the top wall 221 of the barrel 22 through which the air flow of the air circulation channel passes. A plurality of through holes are further arranged on the drawer top cover 211, so that the fresh-keeping space 23 and the top section 241 are communicated through the through holes. The aperture of the through hole can be small, so that the refrigeration air flow uniformly enters the fresh-keeping space 23, avoiding direct blowing of the storage in the fresh-keeping space 23.

[0061] The top heat insulation plate 213 further forms a plurality of air guide ribs 2131 on the side facing the drawer top cover 211, so as to guide the air flow in the top section 241 through the top section 241 uniformly.

[0062] The barrel 22 is simple in molding processing and can be used as an upper and lower or left and right split splicing inner barrel, which is fixed by a special buckle or screw or the like, or can be an integrally formed barrel. The inner side of the side wall of the barrel 22 is provided with a corresponding drawer 21 mounting structure, such as a slide rail or slide.

[0063] The barrel 22 is provided with a heat preservation member, such as the top heat insulation plate 213, the middle partition plate 2152, the bottom heat insulation plate and the rear wall heat insulation plate, on the outer side of the air circulation channel, so as to avoid the cold quantity of the refrigeration air flow from being scattered outside, and improve the refrigeration efficiency.

[0064] Figure 7 is a schematic view of the top section 241 of the air circulation channel of the magnetic field fresh-keeping device 20 in the refrigeration equipment 10 according to an embodiment of the present application. The refrigeration equipment 10 with the magnetic field fresh-keeping device 20 further comprises a first temperature detection component 251 and a second temperature detection component 252. The first temperature detection component 251 and the second temperature detection component 252 are respectively arranged in the drawer top cover 211, the first temperature detection component 251 is arranged at a position close to the air inlet 231, and the second temperature detection component 252 is arranged at a position close to the front baffle 215 of the drawer 21. The first temperature detection component 251 and the second temperature detection component 252 can accurately detect the temperature in the fresh-keeping space 23, thereby providing a control basis for accurately controlling the temperature.

[0065] In other embodiments, the first temperature detection component 251 can be arranged in the drawer top cover 211, and the second temperature detection component 252 is arranged at the bottom section 243 of the air circulation channel, that is, at the bottom wall 223 of the barrel 22, so as to reflect the temperature state of different positions of the fresh-keeping space 23.

[0066] The top cover 211 of the drawer is provided with a receiving groove on one side of the top section 241 of the surrounding air duct, for arranging the first temperature detection component 251 and the second temperature detection component 252. An optional temperature control strategy is to start air supply to the magnetic field fresh-keeping device 20 when the temperature sensing value of the first temperature detection component 251 is higher than the fresh-keeping set temperature, and to stop air supply to the magnetic field fresh-keeping device 20 when the temperature sensing value of the second temperature detection component 252 is lower than the fresh-keeping temperature required by the food material.

[0067] Figure 8 is an exploded view of the components of the drawer 21 in the magnetic field fresh-keeping device 20 in the refrigeration equipment 10 according to an embodiment of the present application. The front baffle 215 of the drawer 21 can include a partition plate 2152, an air duct piece 2153, a panel 2151, and an outer frame 2156. The panel 2151, the partition plate 2152, and the panel 2151 are arranged in this order from front to back. The outer frame 2156 serves as an outer peripheral frame of the front baffle 215 of the drawer 21, and can have a support frame and a decorative strip located outside the support frame. The front baffle 215 of the drawer 21 encloses the front space of the fresh-keeping space 23, and can be pulled out by a user.

[0068] The air duct piece 2153 is arranged on the side of the partition plate 2152 facing the fresh-keeping space 23, and cooperates with the partition plate 2152 to define the front section 242 of the surrounding air duct passing through the front baffle 215. The top of the air duct piece 2153 communicates with the front baffle air inlet 2154 of the top section 241. The front ends of the plurality of air guide ribs 2131 of the top heat insulation plate 213 can guide the air flow to the front baffle air inlet 2154.

[0069] The panel 2151 is arranged on the side of the partition plate 2152 opposite to the fresh-keeping space 23, and forms an air insulation space with the partition plate 2152. The panel 2151 can be made of a glass plate. That is, the partition plate 2152 divides the front baffle 215 of the drawer 21 into two chambers in front and back. The front chamber is the air insulation space, to avoid cold leakage. The rear chamber is the front section 242 of the surrounding air duct. The partition plate 2152 can also be made of a heat-insulating material, to further avoid cold leakage. The side of the partition plate 2152 facing the panel 2151 can form a plurality of protrusions, which abut against the rear side of the panel 2151, to support the panel 2151.

[0070] The double-layer structure of the front baffle 215 of the drawer 21 is compact and has good heat preservation effect. The front baffle 215 of the drawer 21 can be connected into a whole by a decorative strip or a screw buckle and the like, and the cooperation structure among the partition plate 2152, the air duct member 2153, the panel 2151 and the outer frame 2156 can be fixed into a whole reasonably and simply by using fewer components, for example, clamping, clamping jaw, clamping hole and the like. The lower end of the partition plate 2152 is provided with a corresponding plug-in structure, which is connected with the lower part of the drawer 21 to form a fixed whole. The front baffle 215 of the drawer 21 can be further provided with a sealing strip at the rear side of the outer frame 2156, which cooperates with the sealing groove at the front end of the barrel body 22 to realize the sealing of the fresh-keeping space 23.

[0071] The drawer 21 is cooperated with the guide rail member of the barrel body 22, and is arranged to be pulled out along the front-rear direction of the barrel body 22. After the drawer 21 is pulled back to the barrel body 22, the relatively sealed fresh-keeping space 23 is formed, and the magnetic field generated by the magnetic field assembly is used for fresh-keeping storage.

[0072] Figure 9 Fig. 4 is a schematic view of the air guide member 214 of the magnetic field fresh-keeping device 20 in the refrigeration equipment 10 according to an embodiment of the present application. The top wall 221 of the barrel body 22 further comprises the air guide member 214. The air guide member 214 is arranged at the front end of the top wall 221 of the barrel body 22, and the rear part of the air guide member 214 has a first air guide opening 2141 which is communicated with the front end of the top section 241, and the bottom part of the air guide member 214 is opposite to the front baffle air inlet 2154 and has a second air guide opening 2142 which is used for communicating with the front baffle air inlet 2154, so as to guide the air flow of the top section 241 into the front section 242, and the bottom part of the air guide member 214 and the top part of the air duct member 2153 are respectively arranged as inclined surfaces which are inclined downward from front to back. By using the above-mentioned air guide member 214, the air resistance can be reduced, and the noise can be reduced. A grille can be arranged at the front baffle air inlet 2154, which cooperates with the air duct structure of the air guide member 214 and the front section 242.

[0073] The first air guide opening 2141 and the front baffle air inlet 2154 can be an inclined surface, the angle can be set to 1-89°, the gap between the front baffle air inlet 2154 and the inner barrel is 0-10mm, and the gap position can be filled by a sealing strip to make it tightly contact and not interfere with the hardness. The opening area of the front baffle air inlet 2154 is greater than or equal to the area of the front end of the top section 241. The material of the air duct piece 2153 can be ordinary plastic or plastic material with good heat conduction performance (with heat conduction or heat insulation coating), which is connected with the drawer 21 and the drawer front cover by a specific plug-in fitting mode. A certain heat insulation material (foam, PE or VIP, etc.) is pasted in the air duct piece 2153, and the front baffle air outlet 2155 at the lower end of the air duct piece 2153 makes the airflow completely enter the bottom section 243 of the surrounding air duct, so that the airflow is evenly passed through the bottom section 243.

[0074] The drawer bottom plate is arranged in a spaced manner with the bottom wall 223 of the barrel body 22 to form a lower space as the bottom section 243 of the surrounding air duct. The front baffle air outlet 2155 is arranged at the position opposite to the bottom end of the air duct piece 2153 of the drawer bottom plate, so as to communicate the bottom section 243 by the front baffle air outlet 2155.

[0075] The bottom wall 223 of the barrel body 22 is also multi-layered, for example, from bottom to top, it can include a bottom wall shell, a bottom heat insulation plate and a drawer bottom cover. The bottom wall shell is the lowest component of the magnetic field fresh-keeping device 20, and the bottom heat insulation plate is used for heat insulation. The drawer bottom cover is spaced from the drawer bottom, and the space therebetween serves as the bottom section 243 of the surrounding air duct.

[0076] Figure 10 It is a schematic view of the magnetic field assembly 30 of the magnetic field fresh-keeping device 20 in the refrigeration equipment 10 according to an embodiment of the present application.

[0077] The magnetic field assembly 30 can include two groups of magnetic components arranged on the drawer top cover 211 and the bottom wall 223 of the barrel body respectively, wherein the first magnetic plate 321 and the first magnetic component 311 are arranged on the drawer top cover 211, and the first magnetic component 311 is flat as a whole and arranged in close contact with the first magnetic plate 321.

[0078] The second magnetic plate 322 and the second magnetic component (shielded and not shown) are arranged on the bottom wall 223 of the barrel body 22, and the second magnetic component is flat as a whole and arranged in close contact with the second magnetic plate 322.

[0079] The first magnetic conductive plate 321 and the second magnetic conductive plate 322 are oppositely arranged, and the magnetic field assembly 30 can further include a magnetic conductive tape 323. The magnetic conductive tape 323 can be arranged on the sidewall of the barrel 22 and connected to the first magnetic conductive plate 321 and the second magnetic conductive plate 322 to form a ring-shaped magnetic conductive path surrounding the drawer 21. The ring-shaped magnetic conductive path can be made of a material with low coercivity and high magnetic permeability, which forms a magnetic conductive path that can be used to concentrate the magnetic field, improve the uniformity of the magnetic field in the storage space, and at the same time reduce the release of the magnetic field to the outside, reducing the interference with other components outside the magnetic field preservation device 20 (for example, avoiding magnetizing other components, etc.). The first magnetic conductive plate 321, the second magnetic conductive plate 322, and the magnetic conductive tape 323 can be made of silicon steel sheets or similar materials.

[0080] The first magnetic conductive plate 321 and the second magnetic conductive plate 322 cover the top and bottom of the preservation space 23, respectively, which can expand the coverage of the magnetic field and make the magnetic field more uniform.

[0081] The first magnetic member 311 and the second magnetic member can be electromagnetic coils wound by electromagnetic coils, which can be circular, oval, or square in shape, and flat in shape, with the top and bottom being planar and the thickness being significantly smaller than the outer circumference. The surrounding air duct can also remove the heat generated by the magnetic field assembly, reducing the temperature influence on the preservation space 23.

[0082] Alternatively, the magnetic field assembly in the embodiment can also use permanent magnets as magnetic field elements, such as arranging magnetic plates made of permanent magnets on the top and bottom of the drawer. In addition, electromagnetic coils and permanent magnets can also be used in combination to generate a magnetic field.

[0083] The magnetic field helps to improve the storage quality, can shorten the freezing time, reduce the loss rate of food juice and nutrients, reduce the number of microorganisms and bacteria, and prolong the preservation period. And the magnetic field preservation device 20 is configured to form a surrounding air duct that makes the air flow from the air inlet 231 to the top wall 221 of the barrel 22, the front baffle 215 of the drawer 21, the space below the drawer bottom plate, and returns to the air outlet 232, to cool the preservation space 23. Further, the magnetic field cooperates with the temperature control to cool the preservation space 23 using the surrounding air duct, and the cold air can also timely remove the heat generated by the electromagnetic coil during operation, avoiding temperature fluctuations in the preservation space 23, and the combined effect of temperature and magnetic field improves the preservation effect of food in the preservation space 23.

[0084] So far, the technical solutions of the present application have been described in combination with the foregoing embodiments, but those skilled in the art can easily understand that the protection scope of the present application is not limited to these specific embodiments. Those skilled in the art can split and combine the technical solutions in the above-mentioned embodiments, or make equivalent changes or replacements to the related technical features, without departing from the technical principles of the present application. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principles of the present application will fall within the protection scope of the present application.

Claims

1. A refrigeration device with a magnetic field fresh-keeping device, comprising: a cabinet defining a storage compartment therein, a back of the storage compartment being provided with a refrigeration air duct for providing a refrigeration air flow; a magnetic field fresh-keeping device arranged in the storage compartment and provided with a magnetic field assembly for applying a magnetic field to a fresh-keeping space inside the magnetic field fresh-keeping device, and the magnetic field fresh-keeping device comprising: a barrel defining an air inlet and an air return in communication with the refrigeration air duct at a back thereof; a drawer arranged in the barrel in a pullable manner and defining the fresh-keeping space therein; and the magnetic field fresh-keeping device being configured to form a surrounding air duct for the air flow to flow from the air inlet, pass through a top wall of the barrel, a front baffle of the drawer, a space below a bottom plate of the drawer, and return to the air return in sequence, so as to refrigerate the fresh-keeping space. 2.The refrigeration device with the magnetic field fresh-keeping device according to claim 1, wherein the top wall of the barrel comprises: a drawer top cover opposite to a top opening of the drawer; an outer shell plate arranged above the drawer top cover and having a first space with the drawer top cover; a top thermal insulation plate arranged in the first space, a space between the top thermal insulation plate and the drawer top cover forming a top section of the surrounding air duct flowing through the top wall of the barrel, and a plurality of through holes being further arranged on the drawer top cover to communicate the fresh-keeping space with the top section by the through holes. 3.The refrigeration device with the magnetic field fresh-keeping device according to claim 2, wherein a plurality of air guide ribs are further formed on a side of the top thermal insulation plate facing the drawer top cover to guide the air flow in the top section by the air guide ribs, so that the air flow flows uniformly through the top section. 4.The refrigeration device with the magnetic field fresh-keeping device according to claim 2, wherein the magnetic field assembly comprises a first magnetic guide plate and a first magnetic element arranged on the drawer top cover, the first magnetic element is flat as a whole and arranged in abutment with the first magnetic guide plate. 5.The refrigeration device with the magnetic field fresh-keeping device according to claim 4, wherein the magnetic field assembly comprises a second magnetic guide plate and a second magnetic element arranged on a bottom wall of the barrel, the second magnetic element is flat as a whole and arranged in abutment with the second magnetic guide plate, the first magnetic guide plate and the second magnetic guide plate are arranged oppositely, and the magnetic field assembly comprises: a magnetic guide tape arranged on a side wall of the barrel and connecting the first magnetic guide plate and the second magnetic guide plate to form a ring-shaped magnetic guide path surrounding the drawer. 6.The refrigeration device with the magnetic field fresh-keeping device according to claim 4, further comprising: a first temperature detection component and a second temperature detection component arranged in the drawer top cover respectively, the first temperature detection component is arranged at a position close to the air inlet, and the second temperature detection component is arranged at a position close to the front baffle of the drawer. 7.The refrigeration device with the magnetic field fresh-keeping device according to claim 2, wherein the front baffle of the drawer comprises: a middle partition plate; a wind duct member arranged on the side of the middle partition plate facing the fresh-keeping space and defining, together with the middle partition plate, a front section of the circumferential wind duct through which the front baffle plate is arranged to pass, the top of the wind duct member being in communication with the front baffle plate air inlet of the top section; a panel arranged on the side of the middle partition plate opposite to the fresh-keeping space and forming, together with the middle partition plate, an air insulation space.

8. The refrigeration device with magnetic field fresh-keeping apparatus according to claim 7, wherein the top wall of the tub further comprises: a wind guide member arranged at the front end of the top wall of the tub, the rear part of the wind guide member having a first air guide opening in communication with the front end of the top section, the bottom of the wind guide member being opposite to the front baffle plate air inlet and having a second air guide opening for communicating with the front baffle plate air inlet, so as to guide the air flow of the top section into the front section, and the bottom of the wind guide member and the top of the wind duct member are respectively arranged as inclined surfaces inclined downward from front to back.

9. The refrigeration device with magnetic field fresh-keeping apparatus according to claim 7, wherein the drawer bottom plate is arranged in spaced relation with the bottom wall of the tub to form the lower space as the bottom section of the circumferential wind duct; the front baffle plate air outlet is arranged at the position of the front part of the drawer bottom plate opposite to the bottom end of the wind duct member, so as to communicate the bottom section through the front baffle plate air outlet.

10. The refrigeration device with magnetic field fresh-keeping apparatus according to claim 1, wherein the rear wall of the tub is arranged in spaced relation with the back of the storage compartment, the return air opening is arranged at the middle part of the rear wall; and the top end of the rear wall is inclinedly extended toward the rear end of the top wall of the tub, and the air inlet is arranged on the inclined extension surface.

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