CN217031740U - Refrigeration equipment with magnetic field fresh-keeping device - Google Patents

Abstract

The utility model provides a refrigeration equipment with magnetic field fresh-keeping device, which comprises: the refrigerator comprises a box body, a storage chamber, a refrigerating air duct and a refrigerating air duct, wherein the storage chamber is limited in the box body, and the back of the storage chamber is provided with the refrigerating air duct for providing refrigerating air flow; and the magnetic field preservation device is arranged in the storage room and is provided with a magnetic field assembly for applying a magnetic field to a preservation space inside the magnetic field preservation device. The magnetic field fresh-keeping device includes: the rear part of the barrel body is provided with an air inlet and an air return inlet which are communicated with the refrigerating air duct; the drawer is arranged in the barrel body in a drawing way, and a fresh-keeping space is defined in the drawer; and the magnetic field fresh-keeping device is configured to form a surrounding air duct which enables air flow to sequentially flow through the top wall of the barrel body, the front baffle of the drawer and the space below the bottom plate of the drawer to return to the air return opening from the air inlet so as to refrigerate the fresh-keeping space. The refrigeration equipment reduces the temperature fluctuation of the fresh-keeping space and improves the fresh-keeping effect of food in the fresh-keeping space.

Description

Refrigeration equipment with magnetic field preservation device

technical field

The utility model relates to refrigeration and freezing equipment, in particular to a refrigeration equipment with a magnetic field fresh-keeping device.

Background technique

When the existing refrigeration equipment (including refrigerators, freezers, freezers, etc.) stores meat, fish, shrimp and other ingredients, it is easy to cause the loss of juice from the meat, which in turn causes the fish and shrimp to deteriorate, resulting in the loss of nutrients and changes in taste. Difference.

Now research has found that magnetic fields can inhibit the growth of microorganisms and mold, and prolong the storage period of food. Therefore, a magnetic field can be used to assist in the storage of ingredients, thereby achieving the purpose of extending the storage period of ingredients. When the magnetic field is used to assist the storage of food, the magnetic field limits the free path of water molecules to a certain extent, which is manifested in the breaking of the hydrogen bonds in the water molecules. In the process of water phase transition, the growth of crystal nucleus is inhibited, the growth rate of ice crystals is higher than the migration rate of water molecules, and the resulting ice crystals are small, which causes less damage to cells and reduces the loss rate of juice in ingredients. The nutrition and taste of food can be better preserved.

In order to achieve fresh-keeping storage, the magnetic field needs to be matched with the storage temperature. After the actual test, it is best to keep the storage temperature at 5-8 degrees Celsius without freezing and fresh-keeping storage, and the cooling speed also needs to be relatively stable. However, in the process of applying a magnetic field to the fresh-keeping space, the magnetic field generating device (generally an electromagnetic device) will generate heat, which will cause temperature fluctuations and affect the storage quality.

Utility model content

One object of the present invention is to provide a refrigeration device with a magnetic field preservation device that improves refrigeration performance.

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

A further object of the present invention is to make the temperature of the fresh-keeping space of the magnetic field fresh-keeping device uniform.

In order to achieve the above purpose, the utility model provides a refrigeration device with a magnetic field fresh-keeping device, which includes:

The box body defines a storage compartment, and the back of the storage compartment is provided with a cooling air duct for providing cooling airflow;

The magnetic field fresh-keeping device is arranged in the storage room, and is provided with a magnetic field component for applying a magnetic field to the fresh-keeping space inside itself.

The magnetic field fresh-keeping device includes: a barrel body, the rear of which is formed with an air inlet and an air return port that communicate with the refrigeration air duct; a drawer, which can be drawn and pulled in the barrel body, and defines a fresh-keeping space therein; and the magnetic field fresh-keeping device is configured as A surrounding air duct is formed to make the air flow from the air inlet to the top wall of the barrel, the front baffle of the drawer, and the space below the bottom of the drawer to return to the air return port, so as to cool the fresh-keeping space.

Optionally, the top wall of the barrel includes:

the top cover of the drawer, opposite the top opening of the drawer;

The shell plate is arranged above the top cover of the drawer and has a first interval with the top cover of the drawer;

The top heat insulation board is arranged in the first interval, the space between the top heat insulation board and the drawer top cover forms a top section that flows through the top wall of the barrel around the air duct, and the drawer top cover is also provided with a plurality of A through hole is used to communicate the fresh-keeping space with the top section by using the through hole.

Optionally, a plurality of air guide ribs are formed on the side of the top heat insulation board facing the drawer top cover, so that the air flow in the top section is guided by the air guide ribs, so that the air flow evenly flows through the top section.

Optionally, the magnetic field assembly includes a first magnetic conductive plate and a first magnetic member disposed on the top cover of the drawer, and the first magnetic member is flat as a whole and is disposed in close contact with the first magnetic conductive plate.

Optionally, the magnetic field assembly includes a second magnetic conductive plate and a second magnetic member disposed on the bottom wall of the barrel, the second magnetic member is flat as a whole and is disposed against the second magnetic conductive plate,

The first magnetic conductive plate and the second magnetic conductive plate are arranged oppositely, and the magnetic field assembly further comprises: a magnetic conductive tape, which is arranged on the side wall of the barrel and is connected to the first magnetic conductive plate and the second magnetic conductive plate to form a magnetic field surrounding the drawer. Circular magnetic conduction path.

Optionally, the above-mentioned refrigeration equipment with a magnetic field preservation device further includes: a first temperature detection part and a second temperature detection part, respectively arranged in the top cover of the drawer; the first temperature detection part is arranged at a position close to the air inlet; The temperature detection part is arranged at a position close to the front baffle of the drawer.

Optionally, the front baffle of the drawer includes:

middle partition;

The air duct member is arranged on the side of the middle partition plate facing the fresh-keeping space, and together with the middle partition plate defines a front section that surrounds the air duct and flows through the front baffle, and the top of the air duct member communicates with the front baffle of the top section Inlet;

The panel is arranged on the side of the middle partition plate opposite to the fresh-keeping space; and an air insulation space is formed between the middle partition plate.

Optionally, the top wall of the barrel further includes:

The air guide is arranged at the front end of the top wall of the barrel, the rear of the air guide has a first air guide that communicates with the front end of the top section, the bottom of the air guide is opposite to the air inlet of the front baffle, and has a The second air guide is connected to the air inlet of the front baffle, so as to guide the airflow of the top section into the front section, and the bottom of the air guide and the top of the air duct are respectively set as inclined surfaces inclined downward from front to back. .

Optionally, the drawer bottom plate and the bottom wall of the barrel are spaced apart to form a lower space as a bottom section surrounding the air duct; a front baffle is provided at the position opposite to the bottom end of the air duct member at the front of the drawer bottom plate. The air outlet is used to connect the bottom section with the air outlet of the front baffle.

Optionally, the rear wall of the barrel is arranged at a distance from the back of the storage compartment, and the air return port is arranged in the middle of the rear wall; and the top end of the rear wall extends obliquely to the rear end of the top wall of the barrel, and the air inlet is arranged in the rear end of the top wall of the barrel. Sloped extension surface.

Based on the foregoing description, those skilled in the art can understand that, in the aforementioned technical solutions of the present invention, the magnetic field fresh-keeping device is arranged in the storage compartment of the refrigeration equipment, and is provided with a magnetic field for applying a magnetic field to the fresh-keeping space inside itself. Magnetic field components, 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 preservation period. And the magnetic field fresh-keeping device is configured to form a surrounding air duct that makes the air flow from the air inlet to the top wall of the barrel, the front baffle of the drawer, and the lower space of the drawer bottom to return to the air return port, so as to cool the fresh-keeping space. The surrounding air duct is used to cool the fresh-keeping space, and the cold air can also take away the heat generated by the magnetic parts (such as electromagnetic components) in time, which avoids the temperature fluctuation of the fresh-keeping space, and combines the effects of temperature and magnetic field. Freshness effect.

Further, the above-mentioned surrounding air duct can also prevent the cold air from blowing directly on the food in the fresh-keeping space, avoid the temperature of the food from dropping too fast, avoid the food being frozen and the quality of storage is reduced, and help to cool down evenly, and the surrounding air duct can take away magnetic parts such as electromagnetic coils. The heat generated reduces temperature fluctuations.

Furthermore, the refrigerating equipment of the present invention optimizes and improves the structure of the barrel body and the drawer of the magnetic field fresh-keeping device, has a compact structure, and reduces the occupation of storage space.

The above and other objects, advantages and features of the present invention will be more apparent to those skilled in the art from the following detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

In order to illustrate the technical solutions of the present invention more clearly, some embodiments of the present invention will be described hereinafter with reference to the accompanying drawings. It should be understood by those skilled in the art that components or parts denoted by the same reference numerals in different drawings are the same or similar; the drawings of the present invention are not necessarily drawn to scale with respect to each other. In the attached picture:

1 is a schematic diagram of a refrigeration device according to an embodiment of the present invention;

2 is a schematic diagram of a magnetic field preservation device in a refrigeration device according to an embodiment of the present invention;

Fig. 3 is the schematic diagram of another view angle of the magnetic field preservation device shown in Fig. 2;

4 is a side cross-sectional view of a magnetic field fresh-keeping device in a refrigeration device according to an embodiment of the present invention;

Fig. 5 is the partial enlarged view of A place in Fig. 4;

Fig. 6 is a partial enlarged view at B in Fig. 4;

7 is a schematic diagram of a top section in a surrounding air duct of a magnetic field fresh-keeping device in a refrigeration device according to an embodiment of the present invention;

8 is an exploded view of the components of the middle drawer of the magnetic field fresh-keeping device in the refrigeration equipment according to an embodiment of the present invention;

9 is a schematic diagram of an air guide member of a magnetic field fresh-keeping device in a refrigeration device according to an embodiment of the present invention; and

10 is a schematic diagram of a magnetic field assembly of a magnetic field fresh-keeping device in a refrigeration device according to an embodiment of the present invention.

Detailed ways

It should be understood by those skilled in the art that the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments of the present invention, and this part of the embodiments are intended to explain the technical principles of the present invention , is not intended to limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts should still fall within the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", Terms indicating a direction or positional relationship such as "inner" and "outer" are based on the direction or positional relationship shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, It is constructed and operated in a particular orientation and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first", "second", "third", "primary", "secondary" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In addition, it should also be noted that, in the description of the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, or It can be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The refrigeration equipment of the utility model includes refrigerators, freezers, freezers and other equipment used for refrigerating and storing stored items. In the drawings of this embodiment, the form of a refrigerator is taken as an example for introduction, and those skilled in the art can implement other refrigeration equipment such as freezers and freezers according to the introduction in this embodiment. The refrigeration equipment of the present invention will be described in detail below with reference to the accompanying drawings.

1 is a schematic diagram of a refrigeration device according to an embodiment of the present invention; the refrigeration device 10 may be a refrigerator, and includes: a box body 110 , a door body 120 , and a refrigeration system (not shown in the figure). The box body 110 may define at least one storage compartment 130 whose front side is open, usually a plurality of storage compartments, such as a refrigerated storage compartment, a freezer storage compartment, a temperature-changing storage compartment, and the like. The number and function of specific storage compartments 130 can be configured according to pre-requirements.

The refrigeration device 10 may use an air-cooled refrigeration method to cool the storage compartment 130 . That is to say, an air duct system is arranged in the box body 110, and the refrigerating air that has been exchanged by the heat exchanger 150 (evaporator) is sent to the storage compartment 130 through the air supply port by the fan 160, and then returned to the air duct through the air return port 232. . achieve refrigeration. In some embodiments, the back of the storage compartment 130 is provided with a cooling air duct 140 for providing cooling air flow, and a heat exchanger 150 may be disposed in the cooling air duct 140 to exchange heat with the air flowing therethrough. A fan 160 may also be arranged in the cooling air duct 140 to promote the formation of the above-mentioned circulating cooling air flow.

Optionally, there may be multiple storage compartments, and at least one of the multiple storage compartments is provided with the magnetic field fresh-keeping device 20 . Those skilled in the art can configure a refrigeration system and an air duct for each storage compartment as required. 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. Heater 150.

Since the box body, door body, and refrigeration system of such refrigerators are all known and easy to implement by those skilled in the art, those skilled in the art can select the refrigeration system and air duct system according to their needs. Inventive point, the box body 110 , the door body 120 , and the refrigeration system itself will not be described in detail later.

The magnetic field fresh-keeping device 20 is arranged in a storage compartment 130, and is provided with a magnetic field component for applying a magnetic field to the fresh-keeping space 23 inside itself. The intensity range of the magnetic field can be set to 1Gs-100Gs. In the case of a freezing environment, the magnetic field intensity range can preferably be 5-60GS, for example, about 20Gs; in the case of a refrigerated environment, the magnetic field intensity range can be 20-160GS, preferably 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 magnetic fields. In some embodiments, electromagnetic coils and permanent magnets may also be used in combination to generate the magnetic field.

2 is a schematic diagram of the magnetic field fresh-keeping device 20 in the refrigeration device 10 according to an embodiment of the present invention; FIG. 3 is a schematic diagram of another view angle of the magnetic field fresh-keeping device 20 shown in FIG. 2 . 4 is a side cross-sectional view of the magnetic field fresh-keeping device 20 in the refrigeration apparatus 10 according to an embodiment of the present invention. FIG. 5 is a partial enlarged view of A in FIG. 4 ; FIG. 6 is a partial enlarged view of B in FIG. 4 .

The magnetic field fresh-keeping device 20 may be configured as a drawer. For example, the magnetic field fresh-keeping device 20 may include a tub body 22 and a drawer 21 . An air inlet 231 and a return air outlet 232 are formed at the rear of the barrel 22 , which are communicated with the cooling air duct 140 . The drawer 21 is provided in the barrel 22 in a drawable manner, and defines a fresh-keeping space 23 therein, 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.

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 through the top wall 221 of the barrel 22, the front baffle 215 of the drawer 21, and the space below the bottom of the drawer to return to the air return port 232 in order, so as to prevent the fresh air from being stored. Space 23 is refrigerated. The surrounding air duct enters the interior 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 of the front baffle 215 of the drawer 21 , and flows through the front of the drawer 21 . The baffle 215 then enters the lower space of the drawer bottom plate from the bottom, and then returns to the air return port 232 located on the rear wall 224 of the barrel 22 to complete the air circulation. The section where the surrounding air duct passes through the top wall 221 of the tub body 22 , that is, the section located at the top of the magnetic field fresh-keeping device 20 is called the top section 241 . The section of the surrounding air duct passing through the front baffle 215 of the drawer 21 , that is, the section located at the front of the magnetic field fresh-keeping device 20 is referred to as the front section 242 . The section of the surrounding air duct passing through the lower space of the drawer bottom, that is, the section located at the bottom of the magnetic field fresh-keeping device 20 is referred to as the bottom section 243 . The surrounding air duct forms an air duct surrounding the fresh-keeping space 23 from the front and rear directions, which effectively achieves uniform cooling.

The top wall 221 of the tub body 22 may include: a drawer top cover 211 , a shell plate 212 , and a top heat insulation plate 213 . The top wall 221 of the barrel body 22 is, in order from top to bottom, the shell plate 212 , the top heat insulation plate 213 , and the drawer top cover 211 .

The air return port 232 may be disposed in the middle of the rear wall 224 of the barrel body 22 . The top end of the rear wall 224 extends obliquely toward the rear end of the top wall 221 of the barrel 22 , and the air inlet 231 is disposed on the inclined 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 device 10 more smoothly, thereby improving the air supply efficiency. In addition, the air inlet 231 is arranged at the top end of the rear side of the drawer 21, and is arranged obliquely, which reduces the occupation of the fresh-keeping space 23 by the air supply structure, and the structure is more compact and effective.

The drawer top cover 211 is opposite to the top opening of the drawer 21 for closing the top space of the fresh-keeping space 23 . The shell plate 212 is disposed above the drawer top cover 211 and has a first interval with the drawer top cover 211 . The top heat insulation board 213 is disposed in the first interval, and the space between the top heat insulation board 213 and the drawer top cover 211 forms a top section 241 surrounding the air duct flowing through the top wall 221 of the tub body 22 . The drawer top cover 211 is also provided with a plurality of through holes, so that the fresh-keeping space 23 is communicated with the top section 241 through the through holes. The diameter of the through hole can be set to be small, so that the refrigerating airflow can enter the fresh-keeping space 23 evenly, so as to avoid direct blowing of the stored goods in the fresh-keeping space 23 .

A plurality of air guide ribs 2131 are also formed on the side of the top heat insulation board 213 facing the drawer top cover 211, so that the air flow in the top section 241 can be guided by the air guide ribs 2131, so that the air flow evenly flows through the top section 241.

In order to simplify the molding process, the barrel 22 can be used as an upper and lower or left and right split spliced inner barrels, fixed by special fasteners or screws, etc., and can also be used as an integral molding barrel. The inner side of the side wall of the barrel body 22 is provided with a corresponding installation structure of the drawer 21, a slide rail or a slide way.

The barrel body 22 is provided with thermal insulation members on the outer side of the surrounding air duct, such as the top thermal insulation board 213, the middle partition board 2152, the bottom thermal insulation board, and the rear wall thermal insulation board, so as to avoid the cooling of the cooling airflow and improve the cooling effect. efficiency.

7 is a schematic diagram of the top section 241 in the surrounding air duct of the magnetic field fresh-keeping device 20 in the refrigeration apparatus 10 according to an embodiment of the present invention. The refrigeration apparatus 10 with the magnetic field fresh-keeping device 20 further includes: a first temperature detection part 251 and a second temperature detection part 252 . The first temperature detection part 251 and the second temperature detection part 252 are respectively arranged in the drawer top cover 211 . Location of baffle 215. Using the first temperature detection part 251 and the second temperature detection part 252 can accurately detect the temperature in the fresh-keeping space 23, thereby providing a control basis for accurate temperature control.

In other embodiments, the first temperature detection component 251 may be disposed in the drawer top cover 211 , and the second temperature detection component 252 may be disposed in the bottom section 243 surrounding the air duct, that is, at the bottom wall 223 of the tub body 22 . , so as to reflect the temperature states of different positions of the fresh-keeping space 23 .

The drawer top cover 211 is provided with a receiving groove on the side facing the top section 241 surrounding the air duct for arranging the first temperature detection part 251 and the second temperature detection part 252 . An optional temperature control strategy is: when the temperature sensed value of the first temperature detection component 251 is higher than the preset temperature for preservation, the air supply to the magnetic field preservation device 20 is turned on. When the temperature sensed value of the second temperature detection component 252 is lower than the required fresh-keeping temperature of the food, the air supply to the magnetic field fresh-keeping device 20 is stopped.

FIG. 8 is an exploded view of the components of the drawer 21 in the magnetic field fresh-keeping device 20 of the refrigeration apparatus 10 according to an embodiment of the present invention. The front baffle 215 of the drawer 21 may include: a middle partition 2152 , an air duct member 2153 , a panel 2151 , and an outer frame 2156 . From front to back are the panel 2151 , the middle partition 2152 , and the panel 2151 . The outer frame 2156 serves as the outer peripheral frame of the front baffle 215 of the drawer 21 , which may have a support frame and a decorative strip on the outside of the support frame. The front baffle 215 of the drawer 21 closes the front space of the fresh-keeping space 23 and can be pulled by the user.

The air duct member 2153 is disposed on the side of the middle partition plate 2152 facing the fresh-keeping space 23, and together with the middle partition plate 2152 defines the front section 242 that surrounds the air duct and flows through the front baffle 215, and the top of the air duct member 2153 communicates with each other. Front baffle air inlet 2154 of top section 241 . The front ends of the plurality of air guide ribs 2131 of the top heat insulation board 213 can guide the air flow to the air inlet 2154 of the front baffle.

The panel 2151 is disposed on the side of the middle partition plate 2152 that is opposite to the fresh-keeping space 23 ; and forms an air insulation space with the middle partition plate 2152 . The panel 2151 may be made of a glass plate. That is to say, the middle partition plate 2152 divides the front baffle plate 215 of the drawer 21 into two chambers, front and rear. The front side chamber is an air-insulated space to avoid cooling leakage. The rear chamber is the front section 242 surrounding the air duct. The middle partition 2152 can also be made of thermal insulation material to further avoid leakage of cold energy. A side of the middle partition plate 2152 facing the panel 2151 may be formed with a plurality of protrusions, which are abutted against the rear side of the panel 2151 for supporting the panel 2151 .

The above-mentioned double-layer structure of the front baffle plate 215 of the drawer 21 has a compact structure and good thermal insulation effect. The front baffle 215 of the drawer 21 can connect the double-layer structure into a whole by means of decorative strips or screw buckles, and the two layers can increase the thermal insulation effect. The matching structure between them can be reasonably and simply fixed as a whole by using fewer parts, for example, the mutual fixing can be realized by snap connection such as buckles, clamping claws, and clamping holes. The lower end of the middle partition 2152 is provided with a corresponding plug-in structure, and is connected with the lower part of the drawer 21 to form a fixed whole. The front baffle 215 of the drawer 21 may also be provided with a sealing strip on the rear side of the outer frame 2156 to cooperate with the sealing groove at the front end of the barrel 22 to seal the fresh-keeping space 23 .

Both sides of the drawer 21 are matched with the guide rail components of the barrel body 22 , and the whole can be drawn and arranged along the front and rear directions of the barrel body 22 . After the drawer 21 retracts the barrel 22, a relatively sealed fresh-keeping space 23 is formed, and fresh-keeping storage is realized by the magnetic field applied by the magnetic field assembly.

9 is a schematic diagram of the air guide member 214 of the magnetic field fresh-keeping device 20 in the refrigeration apparatus 10 according to an embodiment of the present invention. The top wall 221 of the barrel body 22 further includes an air guide 214 . The air guide member 214 is arranged at the front end of the top wall 221 of the barrel 22, the rear portion of the air guide member 214 has a first air guide port 2141 that communicates with the front end of the top section 241, and the bottom of the air guide member 214 enters the front baffle. The air vents 2154 are opposite to each other and have a second air guide port 2142 for communicating with the air inlet port 2154 of the front baffle, so as to guide the airflow of the top section 241 into the front section 242, and the bottom of the air guide member 214 is connected to the air duct member 2153. The tops are respectively set as inclined surfaces sloping downward from front to back. Using the guidance of the above-mentioned air guide member 214 can reduce wind resistance and reduce noise. A grille may be provided at the air inlet 2154 of the front baffle to match the air duct structure of the air guide member 214 and the front section 242 .

The first air guide 2141 and the air inlet 2154 of the front baffle can be an inclined surface, and the angle can be set to 1-89°. The gap between the air inlet 2154 of the front baffle and the inner barrel is 0-10mm, and the position of the gap can be filled by a sealing strip. Make it in close contact without hardness interference. The opening area of the front baffle air inlet 2154 must be greater than or equal to the area of the front end of the top section 241 . The air duct member 2153 can be made of ordinary plastic or plastic material with good thermal conductivity (with thermal conductivity or thermal insulation coating), and is connected to the drawer 21 and the drawer front cover by a specific plug-fit method. The air duct member 2153 is pasted with a certain thermal insulation. Insulation material (foam, PE or VIP, etc.), and the front baffle air outlet 2155 at the lower end of the air duct member 2153 allows the air flow to enter the bottom section 243 surrounding the air duct completely, so that the air flow evenly passes through the bottom section 243 .

The drawer bottom plate is spaced apart from the bottom wall 223 of the tub body 22 to form a lower space as a bottom section 243 surrounding the air duct. A front baffle air outlet 2155 is opened at a position opposite to the bottom end of the air duct member 2153 at the front of the drawer bottom plate, so that the front baffle air outlet 2155 is used to communicate with the bottom section 243 .

The bottom wall 223 of the tub body 22 is also multi-layered, for example, from bottom to top, it may include: a bottom wall shell, a bottom heat insulation board, and a drawer bottom cover. The bottom wall shell serves as the lowermost part of the magnetic field fresh-keeping device 20, and the bottom heat insulation board is used for heat insulation. The drawer bottom cover is spaced apart from the drawer bottom, and the space therein serves as a bottom section 243 surrounding the air duct.

FIG. 10 is a schematic diagram of the magnetic field assembly 30 of the magnetic field fresh-keeping device 20 in the refrigeration apparatus 10 according to an embodiment of the present invention.

The magnetic field assembly 30 may include two sets of magnetic components respectively disposed on the top cover 211 of the drawer and the bottom wall 223 of the tub body, wherein the first magnetic conducting plate 321 and the first magnetic member 311 are disposed on the top cover 211 of the drawer, and the first magnetic member 311 is integral It is in a flat shape and is placed in close contact with the first magnetic conducting plate 321 .

The second magnetic conductive plate 322 and the second magnetic member (which are blocked and not shown) are disposed on the bottom wall 223 of the barrel 22. The second magnetic member is flat as a whole and is disposed in close contact with the second magnetic conductive plate 322.

The first magnetic conductive plate 321 and the second magnetic conductive plate 322 are disposed opposite to each other, and the magnetic field assembly 30 may further include a magnetic conductive tape 323 . The magnetic conductive tape 323 can be disposed on the side wall of the barrel 22 and connected to the first magnetic conductive plate 321 and the second magnetic conductive plate 322 to form an annular magnetic conductive path surrounding the drawer 21 . The annular magnetic permeability path can be made of materials with low coercivity and high magnetic permeability, and the magnetic permeability path formed by it can be used to gather the magnetic field, improve the uniformity of the magnetic field in the storage space, and reduce the release of the magnetic field to the outside. , to reduce interference to other components outside the magnetic field fresh-keeping device 20 (for example, to avoid 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.

The first magnetic conductive plate 321 and the second magnetic conductive plate 322 cover the top and bottom of the fresh-keeping space 23 respectively, which can expand the coverage of the magnetic field and make the magnetic field more uniform.

The first magnetic member 311 and the second magnetic member can be electromagnetic loops wound by electromagnetic coils, and the shape can be circular, oval or square, and flat, the top and bottom are flat, and the thickness is significantly less than Peripheral size. The surrounding air duct can also take away the heat generated by the magnetic field assembly, reducing the temperature influence on the fresh-keeping space 23 .

Alternatively, the magnetic field assembly in this embodiment may also use permanent magnets as magnetic field elements, for example, magnetic plates made of permanent magnets are arranged on the top and bottom of the drawer. In addition, an electromagnetic coil and a permanent magnet may be used in combination, and the two may be superimposed to generate a magnetic field.

The magnetic field helps to improve the quality of storage, which can shorten the freezing time, reduce the rate of juice loss and nutrient loss of food, reduce the number of microorganisms and bacteria, and prolong the preservation period. And 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 through the top wall 221 of the barrel 22, the front baffle 215 of the drawer 21, and the space below the bottom of the drawer to return to the air return port 232. The fresh-keeping space 23 is refrigerated. Further, the geomagnetic field cooperates with temperature control, and the surrounding air duct is used to cool the fresh-keeping space 23. The cold air can also take away the heat generated by the electromagnetic coil in time, which avoids the temperature fluctuation of the fresh-keeping space 23, and combines the effects of temperature and magnetic field. Improve the fresh-keeping effect of the food in the fresh-keeping space 23.

So far, the technical solutions of the present invention have been described in conjunction with the foregoing embodiments, but those skilled in the art can easily understand that the protection scope of the present invention is not limited to these specific embodiments. Without departing from the technical principles of the present invention, those skilled in the art can split and combine the technical solutions in the above-mentioned embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any modification, equivalent replacement, improvement, etc. made within the technical idea and/or technical principle of the present invention will fall within the protection scope of the present invention.

Claims (10)

1. a refrigeration equipment with magnetic field preservation device is characterized in that comprising: a box body, which defines a storage compartment, and a cooling air duct for providing a cooling air flow is opened on the back of the storage compartment; 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 the fresh-keeping space inside itself, and the magnetic field fresh-keeping device includes: the barrel body, the rear part of which forms an air inlet and an air return port that communicate with the cooling air duct; a drawer, which is provided in the barrel in a drawable manner, and defines the fresh-keeping space therein; and The magnetic field fresh-keeping device is configured to form a surrounding air that makes the air flow from the air inlet to flow through the top wall of the tub body, the front baffle of the drawer, and the space below the bottom of the drawer in order to return to the air return port. to cool the fresh-keeping space. 2. The refrigeration equipment with a magnetic field fresh-keeping device according to claim 1, wherein the top wall of the barrel comprises: a top cover of the drawer, opposite to the top opening of the drawer; an outer shell plate, which is arranged above the drawer top cover and has a first interval with the drawer top cover; a top thermal insulation board, arranged in the first interval, the space between the top thermal insulation board and the top cover of the drawer forms the top section of the surrounding air duct flowing through the top wall of the barrel, and The drawer top cover is also provided with a plurality of through holes, so that the fresh-keeping space is communicated with the top section by using the through holes. 3. The refrigeration equipment with magnetic field fresh-keeping device according to claim 2, characterized in that A plurality of air guide ribs are also formed on the side of the top heat insulation board facing the drawer top cover, so that the air flow in the top section is guided by the air guide ribs, so that the air flow is evenly distributed flow through the top section. 4. The refrigeration equipment with magnetic field fresh-keeping device according to claim 2, characterized in that The magnetic field assembly includes a first magnetic conducting plate and a first magnetic member arranged on the top cover of the drawer, The first magnetic member is flat as a whole, and is disposed in close contact with the first magnetic conducting plate. 5. The refrigeration equipment with magnetic field fresh-keeping device according to claim 4, characterized in that The magnetic field assembly includes a second magnetic conductive plate and a second magnetic piece arranged on the bottom wall of the barrel, the second magnetic piece is flat as a whole, and is arranged against the second magnetic conductive plate, The first magnetic conductive plate and the second magnetic conductive plate are disposed opposite to each other, and the magnetic field assembly includes: The magnetic conducting tape is arranged on the side wall of the barrel and is connected to the first magnetic conducting plate and the second magnetic conducting plate to form an annular magnetic conducting path surrounding the drawer. 6. The refrigeration equipment with magnetic field fresh-keeping device according to claim 4, characterized in that it further comprises: The first temperature detection component and the second temperature detection component are respectively arranged in the top cover of the drawer, the first temperature detection component is arranged near the air inlet, and the second temperature detection component is arranged near the drawer the position of the front bezel. 7. The refrigeration equipment with a magnetic field fresh-keeping device according to claim 2, wherein the front baffle of the drawer comprises: middle partition; The air duct is arranged on the side of the middle partition plate facing the fresh-keeping space, and together with the middle partition plate defines the front section of the surrounding air duct flowing through the front baffle, the air duct The top of the duct piece communicates with the air inlet of the front baffle of the top section; The panel is arranged on the side of the middle partition plate opposite to the fresh-keeping space; and forms an air insulation space with the middle partition plate. 8. The refrigeration equipment with magnetic field fresh-keeping device according to claim 7, wherein the top wall of the barrel further comprises: The air guide is arranged at the front end of the top wall of the barrel, the rear of the air guide has a first air guide that communicates with the front end of the top section, and the bottom of the air guide is connected to the the front baffle air inlets are opposite to each other and have a second air guide for communicating with the front baffle air inlets so as to direct the airflow of the top section into the front section, and The bottom of the air guide member and the top of the air duct member are respectively set as inclined surfaces inclined downward from front to rear. 9. The refrigeration equipment with magnetic field fresh-keeping device according to claim 7, characterized in that The drawer bottom plate and the bottom wall of the barrel body are spaced apart to form the lower space as the bottom section of the surrounding air duct; A front baffle air outlet is provided at a position opposite to the bottom end of the air duct member at the front of the drawer bottom plate, so as to communicate with the bottom section through the front baffle air outlet. 10. The refrigeration equipment with magnetic field fresh-keeping device according to claim 1, characterized in that The rear wall of the barrel is arranged at a distance from the back of the storage compartment, and the air return port is arranged in the middle of the rear wall; and The top end of the rear wall extends obliquely toward the rear end of the top wall of the barrel body, and the air inlet is arranged on the inclined extending surface.

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