WO2023109516A1 - Refrigeration apparatus provided with magnetic field fresh-keeping device - Google Patents

Abstract

A refrigeration apparatus provided with a magnetic field fresh-keeping device, comprising: a cabinet, a storage compartment being defined in the cabinet, and a refrigeration air passage for providing refrigeration airflow being provided on the back of the storage compartment; a magnetic field fresh-keeping device, provided in the storage compartment and provided with a magnetic field assembly for applying a magnetic field to a fresh-keeping space in the magnetic field fresh-keeping device; the magnetic field fresh-keeping device being provided with an air inlet and a return air inlet used for being communicated with the refrigeration air passage, and a circulating air passage through which airflow circulates through the fresh-keeping space from the air inlet and then returns to the return air inlet being formed; a temperature measurement assembly, comprising a plurality of temperature measurement components respectively provided at different positions of the circulating air passage and configured to measure the temperature in the magnetic field fresh-keeping device; and an air supply control assembly, configured to control passing and blocking of the airflow in the circulating air passage according to the temperature in the magnetic field fresh-keeping device. The refrigeration apparatus controls the refrigeration airflow, so that the temperature of the fresh-keeping space meets requirements of fresh-keeping storage, and the quality of stored materials is improved.

Description

Refrigeration equipment with magnetic field preservation device technical field

The invention relates to refrigeration and freezing equipment, and specifically provides a refrigeration equipment with a magnetic field preservation device.

Background technique

Now studies have found that magnetic fields can inhibit the growth of microorganisms and molds and prolong the storage period of food materials. Therefore, the magnetic field can be used to assist in the storage of foodstuffs, thereby achieving the purpose of extending the storage period of foodstuffs. When using a magnetic field to assist food storage, the magnetic field restricts 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. During the phase transition process of water, the growth of crystal nuclei is inhibited, the growth rate of ice crystals is higher than the migration rate of water molecules, and the resulting ice crystals are smaller, which causes less damage to cells and reduces the loss rate of juice in food materials. So that the nutrition and taste of the ingredients can be better preserved.

In order to achieve fresh storage, the magnetic field needs to match the storage temperature. After actual testing, it is best to keep the storage temperature at 5-8 degrees Celsius in the state of non-freezing and fresh-keeping storage, and the cooling speed also needs to be relatively stable. However, the magnetic field generating device (generally an electromagnetic device) generally generates heat during the application of the magnetic field, which will lead to increased temperature fluctuations in the storage space, which increases the difficulty of temperature control.

In addition, the magnetic field fresh-keeping device is tightly sealed, and the free flow of air is small, which will also lead to uneven temperature inside the fresh-keeping space, local overcooling, and a decline in storage quality.

Contents of the invention

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

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

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.

To achieve the above object, the present invention provides a refrigeration device with a magnetic field preservation device, which includes:

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

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; At the beginning, it surrounds the fresh-keeping space and returns to the surrounding air duct of the return air outlet;

The temperature detection component includes a plurality of temperature detection components, which are respectively arranged at different positions around the air duct, and are used to detect the temperature in the magnetic field fresh-keeping device;

The air supply control component is configured to adjust the on-off of the airflow in the surrounding air duct according to the temperature in the magnetic field fresh-keeping device.

Optionally, the air supply control components include:

The damper is arranged between the air inlet and the cooling air duct, and is configured to be opened and closed under control;

The fan is used to promote the formation of an air flow circulating in the surrounding air duct.

Optionally, the temperature detection components include:

The first temperature detection component is arranged in the upstream section of the airflow surrounding the air duct, and the detected temperature value is recorded as the first temperature value;

The second temperature detection component is arranged in the downstream section of the airflow surrounding the air duct, and the detected temperature value is recorded as the second temperature value, and

The air supply control component is also configured to open the damper when the refrigeration system used to refrigerate the magnetic field fresh-keeping device is turned on after the first temperature value and the second temperature value are greater than or equal to the preset start-up point temperature threshold, and Continuously turn on the blower fan to continuously supply air to the magnetic field fresh-keeping device.

Optionally, the air supply control component is further configured to start the fan at a preset first cycle interval if the first temperature value is less than or equal to the preset first shutdown temperature threshold after the damper is opened and the fan is continuously turned on. A shutdown temperature threshold is smaller than the startup point temperature threshold.

Optionally, the air supply control component is further configured to close the damper and the fan if the second temperature value is less than or equal to a preset second shutdown temperature threshold after the fan is started at a preset cycle interval, and the second shutdown temperature threshold is less than Start-up point temperature threshold.

Optionally, the air supply control component is further configured to open the damper and start the fan at a preset second cycle interval after the damper is closed and the blower fan is set for a period of time and the refrigeration system of the magnetic field fresh-keeping device is turned off.

Optionally, the magnetic field preservation device includes:

The barrel body is provided with an air inlet and an air return port at the rear, and the air inlet is located on the upper part of the air return port;

The drawer is arranged in the barrel body in a pull-out manner, and the fresh-keeping space is defined therein; The bottom section, the airflow enters the top section from the air inlet, then flows through the front section, the bottom section and then enters the return air outlet.

Optionally, the first temperature detection component is arranged at the rear of the top section; the second temperature detection component is arranged at the front of the top section or the front of the bottom section.

Optionally, the top wall of the barrel includes:

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

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

a top heat insulation board arranged in the first compartment, the space between the top heat insulation board and the top cover of the drawer forms the top section of the top wall surrounding the air duct flowing through the barrel, and

The top cover of the drawer is also provided with a plurality of through holes, so that the fresh-keeping space is communicated with the top section through the through holes.

Optionally, the magnetic field assembly includes:

The first magnetically conductive plate and the first electromagnetic coil are arranged on the top cover of the drawer, the first electromagnetic coil is flat as a whole, and is arranged adjacent to the first magnetically conductive plate;

The second magnetically conductive plate and the second electromagnetic coil are arranged on the bottom wall of the bucket body, the second electromagnetic coil is flat as a whole, and is arranged adjacent to the second magnetically conductive plate;

The conduction tape is arranged on the side wall of the bucket body, and is connected with the first magnetic conduction plate and the second magnetic conduction plate to form an annular magnetic conduction path surrounding the drawer.

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. Components, the magnetic field helps to improve the quality of storage, can shorten the freezing time, reduce the rate of food juice loss and nutrient loss, reduce the number of microorganisms and bacteria, and prolong the preservation period. Moreover, the magnetic field fresh-keeping device has a surrounding air duct surrounding the fresh-keeping space. The fresh-keeping space is cooled by the circulating airflow in the surrounding air duct. The cold air can also take away the heat generated when the electromagnetic coil is working, avoiding temperature fluctuations in the fresh-keeping space. And the effect of the magnetic field, improve the preservation effect of the food in the fresh-keeping space. A temperature detection component with multiple temperature detection components is installed in the magnetic field fresh-keeping space to accurately know the temperature in the magnetic field fresh-keeping device, and use the temperature in the magnetic field fresh-keeping device to control the airflow, so that the temperature of the fresh-keeping space meets the requirements for fresh-keeping storage. Improved storage quality.

Furthermore, a plurality of temperature detection components detect different areas of the magnetic field fresh-keeping space, and the obtained temperatures reflect the temperature states of different areas, and the opening and closing conditions of the airflow are set in a targeted manner, making the temperature control more precise.

Furthermore, when the cooling of the magnetic field fresh-keeping device is stopped, the fan can be started at intervals to make the airflow flow, make the temperature of the fresh-keeping space more uniform, make the storage quality more balanced, and avoid local overcooling or overheating.

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

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, some embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that the components or parts indicated by the same reference number in different drawings are the same or similar; the drawings of the present invention are not necessarily drawn to scale. In the attached picture:

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

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

Fig. 4 is a side sectional view of a magnetic field preservation device in a refrigeration device according to an embodiment of the present invention;

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

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

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

Fig. 8 is an exploded view of components of a magnetic field preservation device in a refrigeration device according to an embodiment of the present invention;

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

Fig. 10 is a schematic diagram of a magnetic field assembly of a magnetic field preservation device in a refrigeration device according to an embodiment of the present invention;

Fig. 11 is a schematic diagram of an air supply assembly of a magnetic field preservation device in a refrigeration device according to an embodiment of the present invention;

Fig. 12 is a system block diagram of the control assembly of the magnetic field preservation device in the refrigeration device according to one embodiment of the present invention; and

Fig. 13 is a control flowchart of the magnetic field fresh keeping device in the refrigeration equipment according to one embodiment of the present invention.

Detailed ways

It should be understood by those skilled in the art that the embodiments described below are only some of the embodiments of the present invention, rather than all embodiments of the present invention. To limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by persons of ordinary skill in the art without making 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 directions or positional relationships such as "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, in order to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention. Furthermore, the terms "first", "second", "third", "primary" and "secondary" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

In addition, it should be noted that, in the description of the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a It is a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, or it may be the internal communication of two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The refrigerating equipment of the present invention includes refrigerators, freezers and freezers, etc., which are used for refrigerated storage of stored items. In the drawings of this embodiment, refrigerators are 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 of this embodiment. The refrigeration equipment of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 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 with an open front side, usually a plurality of storage compartments, such as a refrigerated storage compartment, a frozen storage compartment, a variable temperature storage compartment, and the like. The number and functions of specific storage compartments 130 can be configured according to pre-required.

The refrigeration device 10 can cool the storage compartment 130 in an air-cooled manner. That is, an air duct system is provided in the box body 110 , and the cooling air flow through 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 . Achieve cooling. In some embodiments, the back of the storage compartment 130 is provided with a cooling air channel 140 for providing cooling air flow, and the heat exchanger 150 may be disposed in the cooling air channel 140 to exchange heat with the air flow passing through. A fan 160 may also be provided in the cooling air channel 140 to facilitate 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 placed with a magnetic field fresh-keeping device 20 . Those skilled in the art can configure a refrigeration system and an air path for the storage compartments according to the needs, for example, a heat exchanger 150 can be configured for one storage compartment, or a heat exchanger 150 can be configured for two or more storage compartments. Heater 150.

The heat exchanger 150 (evaporator) is a part of the refrigeration system. The refrigeration system can be realized by using a compression refrigeration cycle. The compression refrigeration cycle uses the compression phase change cycle of the refrigerant in the compressor, condenser, evaporator, and throttling device to realize heat transmission.

Since the box body, door body, and refrigeration system of this type of refrigerator are well-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. Invention points, 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 assembly 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 application in the freezing environment, the range of the magnetic field intensity can preferably be 5-60GS, for example, about 20Gs; in the case of application in the refrigerated environment, the range of the magnetic field intensity can be 20-160GS, preferably 40-80Gs, for example about 60Gs. The magnetic field components can use permanent magnet components or electromagnetic components, that is, electromagnetic coils and permanent magnets are used to generate a magnetic field. In some embodiments, electromagnetic coils and permanent magnets can also be used in combination to generate a magnetic field. Considering the structural size and the adjustability of the magnetic field, it is preferable to use the magnetic field component of the electromagnetic component.

Fig. 2 is a schematic diagram of a magnetic field preservation device 20 in a 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 preservation device 20 shown in Fig. 2 . Fig. 4 is a side sectional view of the magnetic field fresh keeping device 20 in the refrigeration device 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 can be set as a drawer, for example, the magnetic field fresh keeping device 20 can include a bucket body 22 and a drawer 21 . An air inlet 231 and an air return outlet 232 communicating with the cooling air duct 140 are formed at the rear of the bucket body 22 . The drawer 21 is pullably arranged in the barrel body 22, and defines a fresh-keeping space 23 in it, that is, the fresh-keeping space 23 in the drawer 21 can be controlled by a magnetic field and temperature to realize a magnetic field fresh-keeping function.

The magnetic field fresh-keeping device 20 is configured to form a surrounding air passage that flows from the air inlet 231 through the top wall 221 of the barrel body 22, the front baffle 215 of the drawer 21, the space below the drawer bottom plate and returns to the return air outlet 232, so as to protect the fresh-keeping space 23. Refrigerate. 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 body 22, enters the top of the front baffle plate 215 of the drawer 21, and flows through the front of the drawer 21. The baffle plate 215 then enters the space below the bottom plate of the drawer from the bottom, and then returns to the air return port 232 located on the rear wall 224 of the barrel body 22 to complete the air circulation. The section that surrounds the air passage and passes through the top wall 221 of the bucket body 22 , that is, the section at the top of the magnetic field fresh-keeping device 20 is called the top section 241 . The section surrounding the air passage and 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 called the front section 242 . The section that surrounds the air passage and passes through the space below the bottom plate of the drawer, that is, the section at the bottom of the magnetic field fresh-keeping device 20 is called the bottom section 243 . The surrounding air duct forms an air path surrounding the fresh-keeping space 23 from the front and rear directions, effectively realizing uniform cooling.

Thus, the magnetic field fresh-keeping device 20 is provided with an air inlet 231 and a return air outlet 232 for communicating with the cooling air passage 140, and forms a surrounding air passage starting from the air inlet 231, surrounding the fresh-keeping space 23 and returning to the return air outlet 232. The surrounding air passage includes The top section 241 of the top wall 221 of the barrel body 22, the front section 242 of the front baffle 215 located at the drawer 21, and the bottom section 243 located below the drawer 21, the airflow enters the top section 241 from the air inlet 231, Then it flows through the front section 242 and the bottom section 243 and then enters the air return port 232 .

The top wall 221 of the bucket 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 bucket body 22 is as follows from top to bottom: a shell board 212 , a top heat insulation board 213 , and a drawer top cover 211 .

The air return port 232 may be disposed in the middle of the rear wall 224 of the bucket body 22 . The top end of the rear wall 224 extends obliquely toward the rear end of the top wall 221 of the bucket body 22 , and the air inlet 231 is disposed on the inclined extension surface. The above-mentioned positions of the air inlet 231 and the air return outlet 232 make the cooperation between the magnetic field fresh-keeping device 20 and the air duct of the refrigeration equipment 10 more smooth, and improve the air supply efficiency. In addition, the air inlet 231 is arranged on the top 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 and is used to close the top space of the fresh-keeping space 23 . The shell board 212 is disposed above the drawer top cover 211 and has a first distance from 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 barrel 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 by using the through holes. The aperture of the through hole can be set to be small, so that the cooling air flow enters the fresh-keeping space 23 evenly, and avoids directly blowing the stored items in the fresh-keeping space 23 .

Barrel body 22 can be used as an inner barrel spliced up and down, or left and right splits for the sake of simple forming and processing, and can be fixed by special buckles or screws or the like, or can be used as an integrally formed barrel. The inside of the side wall of the barrel body 22 is provided with a corresponding drawer 21 installation structure, slide rail or slideway.

Barrel body 22 is provided with thermal insulation parts on the outer side of surrounding air duct, such as top heat insulation board 213, middle partition board 2152, bottom heat insulation board, and rear wall heat insulation board, which avoids the cooling capacity of the refrigerating air flow from dispersing outwards and improves the cooling performance. efficiency.

Fig. 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 device 10 according to an embodiment of the present invention. A plurality of air guiding ribs 2131 are formed on the side of the top heat insulation board 213 facing the drawer top cover 211, so that the air guiding ribs 2131 can guide the airflow in the top section 241, so that the airflow can evenly flow through the top section 241.

Fig. 8 is an exploded view of the drawer 21 in the magnetic field fresh-keeping device 20 of the refrigeration device 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 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 peripheral frame of the front baffle 215 of the drawer 21 , which may have a support frame and decorative strips located outside 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 2153 is arranged on the side of the middle partition 2152 facing the fresh-keeping space 23, and together with the middle partition 2152 defines the front section 242 surrounding the air passage and flowing through the front baffle 215, the top of the air duct 2153 communicates Front baffle air inlet 2154 of top section 241 . The front ends of the plurality of air guiding ribs 2131 of the top insulation board 213 can guide the airflow to the air inlet 2154 of the front baffle.

The panel 2151 is arranged on the side of the middle partition 2152 opposite to the fresh-keeping space 23 ; and forms an air heat insulation space with the middle partition 2152 . Panel 2151 may be made from a glass plate. That is to say, the middle partition 2152 divides the front baffle 215 of the drawer 21 into two chambers, front and rear. The front chamber is an air-insulated space to avoid cold 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 cooling capacity. A side of the middle partition 2152 facing the panel 2151 may form a plurality of protrusions to abut 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 a 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 increase the heat preservation effect, and the middle partition 2152, the air duct part 2153, the panel 2151, and the outer frame 2156 The matching structure between them can be reasonably and simply fixed as a whole with fewer parts, for example, mutual fixing can be realized by buckles, claws, and holes. The lower end of the middle partition 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 plate 215 of the drawer 21 can also be 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 staving 22 to realize the sealing of the fresh-keeping space 23.

Barrel body 22 can be used as an inner barrel spliced up and down, or left and right splits for the sake of simple forming and processing, and can be fixed by special buckles or screws or the like, or can be used as an integrally formed barrel. The inside of the side wall 225 of the barrel body 22 is provided with a corresponding installation structure of the drawer 21 , slide rails or slideways.

Both sides of the drawer 21 cooperate with the guide rail parts 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 body 22, a relatively sealed fresh-keeping space 23 is formed, and the fresh-keeping storage is realized through the magnetic field applied by the magnetic field assembly.

Barrel body 22 is provided with thermal insulation parts on the outer side of surrounding air duct, such as top heat insulation board 213, middle partition board 2152, bottom heat insulation board, and rear wall heat insulation board, which avoids the cooling capacity of the refrigerating air flow from dispersing outwards and improves the cooling performance. efficiency.

Fig. 9 is a schematic diagram of the air guide 214 of the magnetic field fresh-keeping device 20 in the refrigeration device 10 according to an embodiment of the present invention. The top wall 221 of the bucket body 22 also includes an air guide 214 . The air guide 214 is arranged on the front end of the top wall 221 of the bucket body 22, the rear of the air guide 214 has a first air guide 2141 communicating with the front end of the top section 241, and the bottom of the air guide 214 enters the front baffle. The air port 2154 is opposite, and has a second air guide port 2142 for communicating with the air inlet 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 and the air duct member 2153 The tops are respectively set as inclined surfaces inclined downward from the front to the rear. Utilizing the guidance of the above-mentioned air guiding member 214, wind resistance and noise can be reduced. A grille may be provided at the air inlet 2154 of the front baffle, which cooperates with the air duct structure of the air guide 214 and the front section 242 .

The first air guide port 2141 and the front baffle air inlet 2154 can be an inclined surface, and the angle can be set at 1-89°. The gap between the front baffle air inlet 2154 and the inner tub is 0-10mm, and the gap can be filled with a sealing strip. Make it in close contact without hardness interference. The opening area of the air inlet 2154 of the front baffle must be greater than or equal to the area of the front end of the top section 241 . The material of the air duct 2153 can be ordinary plastic or plastic material with good thermal conductivity (with heat conduction or thermal insulation coating). 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 airflow to completely enter the bottom section 243 surrounding the air duct, so that the airflow passes through the bottom section 243 evenly .

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

The bottom wall 223 of the bucket 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 is used as the lowermost part of the magnetic field fresh-keeping device 20, and the bottom heat insulation board is used for heat insulation and heat preservation. The bottom cover of the drawer is spaced opposite to the bottom of the drawer, 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 device 10 according to an embodiment of the present invention.

The magnetic field assembly 30 may include two sets of magnetic components respectively arranged on the drawer top cover 211 and the barrel bottom wall 223, wherein the first magnetic plate 321 and the first electromagnetic coil 311 are arranged on the drawer top cover 211, and the first electromagnetic coil 311 is integrally It has a flat shape and is placed against the first magnetically conductive plate 321 .

The second magnetically conductive plate 322 and the second electromagnetic coil (covered, not shown) are arranged on the bottom wall 223 of the barrel body 22, the second electromagnetic coil is flat as a whole, and is placed against the second magnetically conductive plate 322,

The first magnetically conductive plate 321 and the second magnetically conductive plate 322 are arranged oppositely, and the magnetic field assembly may further include a conductive tape 323 . The conductive tape 323 can be disposed on the side wall 225 of the barrel body 22 and connect the first magnetically conductive plate 321 and the second magnetically conductive plate 322 to form an annular magnetically conductive path around the drawer 21 . The annular magnetic conduction path can be made of materials with low coercive force and high magnetic permeability, and the formed magnetic conduction path 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 with other components outside the magnetic field preservation device 20 (for example, avoid magnetizing other components, etc.). The first magnetically conductive plate 321 , the second magnetically conductive plate 322 , and the conductive tape 323 can be made of silicon steel sheets or similar materials.

The first magnetically conductive plate 321 and the second magnetically 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 electromagnetic coil 311 and the second electromagnetic coil are wound by electromagnetic coils, the shape is circular, oval or square ring, and it is flat, the top and bottom are flat, and the thickness is obviously smaller than the outer circumference . The surrounding air duct can also take away the heat generated by the magnetic field components, reducing the temperature impact on the fresh-keeping space 23 .

Alternatively, the magnetic field assembly in this embodiment can 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. Alternatively, an electromagnetic coil and a permanent magnet may be used in combination to generate a magnetic field.

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. And the magnetic field fresh-keeping device 20 is configured to form a surrounding air duct that flows from the air inlet 231 through the top wall 221 of the barrel body 22, the front baffle 215 of the drawer 21, the space below the drawer bottom plate and returns to the return air outlet 232, so as to protect the fresh-keeping space. 23 for refrigeration. Further, the geomagnetic field cooperates with the temperature control, and uses the surrounding air duct to cool the fresh-keeping space 23. The cold wind can also take away the heat generated by the electromagnetic coil in time, avoiding the temperature fluctuation of the fresh-keeping space 23, and combining the effects of temperature and magnetic field. Improve the fresh-keeping effect of food in the fresh-keeping space 23.

Fig. 11 is a schematic diagram of the air supply assembly of the magnetic field fresh-keeping device 20 in the refrigeration device 10 according to an embodiment of the present invention. Fig. 12 is a system block diagram of the control components of the magnetic field fresh-keeping device 20 in the refrigeration device 10 according to an embodiment of the present invention.

The refrigeration device 10 may further include: a temperature detection component 25 and an air supply control component 16 . The temperature detection assembly 25 includes a plurality of temperature detection components 251 , 252 , which are respectively arranged at different positions around the air duct, and are used to detect the temperature inside the magnetic field fresh-keeping device 20 . In an optional embodiment, the temperature detection component 25 may include: a first temperature detection component 251 and a second temperature detection component 252 . The first temperature detection component 251 is arranged at the upstream section of the air flow in the surrounding air duct, and the detected temperature value is recorded as the first temperature value. The second temperature detection component 252 is arranged in the downstream section of the air flow in the surrounding air duct, and the detected temperature value is recorded as the second temperature value. The first temperature detection component 251 is disposed at the rear of the top section 241 in the surrounding air duct; the second temperature detection component 252 is disposed at the front of the top section 241 or the front of the bottom section 243 of the surrounding air duct.

Since the upstream section of the airflow, that is, the rear portion of the top section 241 around the air duct, is close to the air inlet 231, its temperature is relatively low during the opening of the evaporator 150; and the downstream section of the airflow is also relatively low. That is, the front part of the top section 241 or the front part of the bottom section 243 conducts convection with the air in the fresh-keeping space 23 through the through holes, and its temperature is relatively high. Through the first temperature detection component 251 and the second temperature detection component 252 located at different positions around the air duct, the overall temperature of the magnetic field fresh-keeping device 20 can be determined.

The air supply control assembly 16 is configured to adjust the on-off of the airflow in the surrounding air duct according to the temperature in the magnetic field fresh-keeping device 20 . The air supply control assembly may include a damper 161 and a fan 160 . The damper 161 is disposed between the air inlet 231 and the cooling air passage 140, and is configured to open and close under control. The blower 160 is used to promote the formation of airflow circulating in the surrounding air duct.

In some optional embodiments, the magnetic field fresh-keeping device 20 is arranged in the refrigerated storage compartment, the fan 160 may be a refrigerated fan that supplies air to the refrigerated storage compartment, and the damper 161 is used to open and close the air inlet 231 . The evaporator 150 may be a refrigerated evaporator dedicated to cooling the refrigerated storage compartment.

The air supply control component 16 can open the damper 161 when the refrigeration system used to refrigerate the magnetic field fresh-keeping device 20 is turned on after the first temperature value and the second temperature value are greater than or equal to the preset start-up point temperature threshold, And continue to turn on the fan 160 to continuously supply air to the magnetic field fresh-keeping device 20 . That is, both the first temperature value and the second temperature value are greater than or equal to the preset start-up point temperature threshold, indicating that the temperature inside the magnetic field preservation device 20 is high and refrigeration is required. At this time, the refrigeration system is activated and the evaporator 150 is refrigerated. The blower fan 160 and the damper 161 continue to supply cooling air, and start cooling the magnetic field fresh-keeping device 20 . The temperature threshold at the power-on point can be set according to the set temperature of the magnetic field fresh-keeping device 20 , for example, it can be set to be 2-3 degrees higher than the set temperature.

After cooling is turned on, that is, after the damper 161 is opened and the fan 160 is continuously turned on, if the first temperature value is less than or equal to the preset first shutdown temperature threshold, the fan 160 starts at a preset first cycle interval, and the first shutdown temperature The threshold is smaller than the temperature threshold at the power-on point. The first shutdown temperature threshold can be set according to the set temperature of the magnetic field fresh-keeping device 20 , and generally can be set to be roughly equivalent to the set temperature. The first temperature value is less than or equal to the preset first shutdown temperature threshold, indicating that the temperature of the magnetic field fresh-keeping device is close to the set temperature. If the air supply is still continued at this time, the temperature of the magnetic field fresh-keeping device may be too low. At this time, the fan 160 Activating at preset first cycle intervals may result in a more gradual decrease in temperature.

After the blower 160 is started at preset intervals, the air supply control group 16 can also close the damper 161 and the blower 160 if the second temperature value is less than or equal to the preset second shutdown temperature threshold. The threshold is smaller than the temperature threshold at the power-on point. The second shutdown temperature threshold can also be set according to the set temperature of the magnetic field fresh-keeping device 20 , and generally can be set to be slightly lower than the set temperature. When the second temperature value is less than or equal to the preset second shutdown temperature threshold, it means that the magnetic field fresh-keeping device 20 has finished cooling. After the overall cooling of the refrigerated storage space is completed, you can

After the magnetic field fresh-keeping device 20 is refrigerated, the air supply control assembly 16 is also configured to open the damper 161 and make the fan 160 operate at The preset second cycle interval starts. That is to say, without cooling the magnetic field fresh-keeping device 20, the refrigeration system can be kept closed. At this time, the fan 160 is started at intervals to generate airflow at intervals around the air duct, so that the temperature of the magnetic field fresh-keeping device 20 remains uniform. That is to say, after finishing cooling the storage compartment where the magnetic field fresh-keeping device 20 is located, the fan 160 is started at intervals to disturb the air surrounding the air duct, and balance the temperature in different regions of the magnetic field fresh-keeping device 20, so that the temperature in the fresh-keeping space 23 is uniform.

Fig. 13 is a control flowchart of the magnetic field fresh keeping device 20 in the refrigeration device 10 according to an embodiment of the present invention. The control method of this magnetic field preservation device 20 comprises:

Step S1302, acquiring the first temperature value T_Snr1 detected by the first temperature detection component 251 and the second temperature value T_Snr2 detected by the second temperature detection component 252;

Step S1304, judging whether the first temperature value T_Snr1 and the second temperature value T_Snr2 are greater than or equal to the preset temperature threshold T1_on at the power-on point, that is, judging whether T_Snr1≥T1_on and the second temperature value T_Snr2≥T1_on;

Step S1306, in the case of T_Snr1≥T1_on and T_Snr2≥T1_on, turn on the refrigeration system of the magnetic field fresh-keeping device 20, for example, switch the solenoid valve of the refrigeration cycle to the evaporator 150 that refrigerates the magnetic field fresh-keeping device 20, and turn on the fan 160 and the damper 161;

Step S1308, judging whether the first temperature value T_Snr1 is less than or equal to the first shutdown temperature threshold T1_off, that is, judging that T_Snr1≤T1_off;

Step S1310, if T_Snr1≤T1_off, then control the blower 160 to start at a preset first cycle interval, for example, make the blower 160 turn on every 1 minute, and turn it on again after 1 minute;

Step S1312, judging whether the second temperature value T_Snr2 is less than or equal to the second shutdown temperature threshold T2_off, that is, judging that T_Snr2≤T2_off;

Step S1314, if T_Snr2≤T2_off, turn off the fan 160 and the damper 161;

Step S1316, the cooling of the storage compartment where the magnetic field fresh-keeping device 20 is located is completed, and the refrigeration system of the magnetic field fresh-keeping device 20 is turned off (including the following situations: turning off the compressor to shut down the refrigeration system of the refrigeration device 10, switching the solenoid valve to close the refrigerant flow of the evaporator 150 Road, etc.), that is, stop cooling the storage compartment where the magnetic field fresh-keeping device 20 is located;

Step S1318, after the interval is set for a period of time, for example, after waiting for 5 minutes, the fan 160 is controlled to start at a preset second cycle interval, for example, the fan 160 is turned on for 1 minute, and then restarted after 1 minute.

The temperature threshold T1_on at the startup point, the first shutdown temperature threshold T1_off, and the second shutdown temperature threshold T2_off can be set according to the set temperature of the magnetic field preservation device 20 .

Using the above-mentioned temperature control logic, when the magnetic field fresh-keeping device 20 is cooling, since the first temperature detection component 251 is close to the upstream area of the air duct, the first temperature value T_Snr1 is lower during the air supply and cooling, and it is easier to reach the shutdown point. Continuous cooling causes the temperature of the local air leakage position to be too low, the damper 161 is opened, and the fan 160 enters the state of opening at intervals, so that the magnetic field fresh-keeping device 20 is slowly cooled, and the time for natural convection heat transfer inside the compartment is prolonged, increasing the temperature inside the compartment Uniformity.

After both T_Snr1 and T_Snr2 reach the shutdown point, due to the influence of natural convection, the temperature rise of the upper part of the magnetic field fresh-keeping device 20 is faster than that of the lower part. Both T_Snr1 and T_Snr2 reach the power-on point again.

The magnetic field fresh-keeping device 20 of this embodiment has a surrounding air duct surrounding the fresh-keeping space 23, and the fresh-keeping space 23 is cooled by the circulating air flow in the surrounding air duct. The temperature fluctuation of 23, combined with the effects of temperature and magnetic field, improves the fresh-keeping effect of food in the fresh-keeping space 23 . A plurality of temperature detection components 251, 252 are arranged in the magnetic field fresh-keeping space 23 to accurately know the temperature in the magnetic field fresh-keeping device 20, and use the temperature in the magnetic field fresh-keeping device 20 to control the air flow, so that the temperature of the fresh-keeping space 23 meets the requirements for fresh-keeping storage. requirements, improved storage quality.

So far, the technical solutions of the present invention have been described in conjunction with the foregoing embodiments. However, 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 changes, equivalent replacements, improvements, etc. made within the concept and/or technical principles will fall within the protection scope of the present invention.

Claims (10)

1. A refrigeration device with a magnetic field preservation device, comprising:

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

   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 is provided with an air inlet and an air return port for communicating with the cooling air duct, And form a surrounding air duct starting from the air inlet, surrounding the fresh-keeping space and returning to the return air outlet;

   The temperature detection assembly includes a plurality of temperature detection components, which are respectively arranged at different positions of the surrounding air duct, and are used to detect the temperature in the magnetic field fresh-keeping device;

   The air supply control component is configured to adjust the on-off of the airflow in the surrounding air duct according to the temperature in the magnetic field fresh-keeping device.
2. The refrigeration device with a magnetic field preservation device according to claim 1, wherein the air supply control assembly comprises:

   The damper is arranged between the air inlet and the cooling air duct, and is configured to open and close under control;

   The blower is used to promote the formation of an airflow circulating in the surrounding air duct.
3. The refrigeration equipment with a magnetic field preservation device according to claim 2, wherein

   The temperature detection components include:

   The first temperature detection component is arranged in the upstream section of the airflow in the surrounding air duct, and the detected temperature value is recorded as the first temperature value;

   The second temperature detection component is arranged in the downstream section of the airflow in the surrounding air duct, and the detected temperature value is recorded as the second temperature value, and

   The air supply control component is further configured to turn on the refrigeration system used to refrigerate the magnetic field fresh-keeping device after the first temperature value and the second temperature value are greater than or equal to a preset start-up point temperature threshold. In the case of the air conditioner, open the air door, and continue to open the fan, so as to continuously supply air to the magnetic field fresh-keeping device.
4. The refrigerating equipment with a magnetic field preservation device according to claim 3, wherein

   The air supply control component is further configured to, after opening the damper and continuing to turn on the fan, if the first temperature value is less than or equal to a preset first shutdown temperature threshold, the fan starts at a preset temperature. It is assumed that the first cycle is started at intervals, and the first shutdown temperature threshold is smaller than the startup point temperature threshold.
5. The refrigeration equipment with a magnetic field preservation device according to claim 4, wherein

   The air supply control component is further configured to close the damper and the fan if the second temperature value is less than or equal to a preset second shutdown temperature threshold after the fan is started at a preset cycle interval, The second shutdown temperature threshold is smaller than the startup point temperature threshold.
6. The refrigerating equipment with magnetic field preservation device according to claim 5, wherein

   The air supply control component is also configured to open the damper and make the fan operate at a preset second cycle after closing the damper and the fan for a set period of time and when the refrigeration system of the magnetic field fresh-keeping device is turned off. Interval starts.
7. The refrigeration equipment with a magnetic field preservation device according to claim 3, wherein the magnetic field preservation device comprises:

   barrel body, the rear part of which is provided with the air inlet and the air return port, and the air inlet is located at the upper part of the air return port;

   The drawer is arranged in the barrel body in a pullable manner, and defines the fresh-keeping space inside; and

   The surrounding air duct includes a top section located at the top wall of the barrel, a front section located at the front panel of the drawer, and a bottom section located below the drawer, and the airflow flows from the The air inlet enters the top section, then flows through the front section, the bottom section, and then enters the return air outlet.
8. The refrigerating equipment with a magnetic field preservation device according to claim 7, wherein

   The first temperature detection part is arranged at the rear of the top section; the second temperature detection part is arranged at the front of the top section or the front of the bottom section.
9. The refrigeration device with a magnetic field preservation device according to claim 7, wherein the top wall of the barrel comprises:

   a drawer top, opposite the top opening of said 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;

   a top heat insulation board, arranged in the first compartment, the space between the top heat insulation board and the top cover of the drawer forms the top section of the surrounding air channel flowing through the top wall of the barrel, and

   The top cover of the drawer is also provided with a plurality of through holes, so that the fresh-keeping space communicates with the top section through the through holes.
10. The refrigerating equipment with a magnetic field preservation device according to claim 9, wherein

    The magnetic field assembly includes:

    The first magnetically conductive plate and the first electromagnetic coil arranged on the top cover of the drawer, the first electromagnetic coil is flat as a whole, and is arranged adjacent to the first magnetically conductive plate;

    The second magnetically conductive plate and the second electromagnetic coil arranged on the bottom wall of the barrel body, the second electromagnetic coil is flat as a whole, and is arranged adjacent to the second magnetically conductive plate;

    The conduction tape is arranged on the side wall of the barrel, and connects the first magnetic conduction plate and the second magnetic conduction plate to form an annular magnetic conduction path surrounding the drawer.

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