Air-cooled refrigeration equipment

Abstract

The present invention provides an air-cooled refrigeration device, comprising an equipment body, an air-cooling system attached to the equipment body, and a drawer that can be pulled out relative to the equipment body, wherein the drawer can receive cold air provided by the air-cooling system to cool the stored objects in the drawer; the air-cooled refrigeration device also includes a magnetic field generating device and a detection device, wherein the magnetic field generating device generates a magnetic field acting on the stored objects in the drawer when powered on, and the detection device is used to detect whether the drawer is pulled out; the magnetic field generating device and the detection device are configured such that when the detection device detects that the drawer is pulled out, the magnetic field generating device is powered off. The air-cooled refrigeration device of the present invention improves the utilization rate of the magnetic field, reduces energy consumption, and thus improves the use experience of the air-cooled refrigeration device, especially the smart refrigerator.

Description

Technical Field

[0001] The invention belongs to the technical field of refrigeration and freezing, and specifically provides an air-cooled refrigeration device. Background Art

[0002] Air-cooled refrigeration equipment is a kind of equipment used to refrigerate and freeze stored items (including food, medicines, drinks, biological reagents, bacterial colonies, chemical reagents, etc.).

[0003] Theoretical studies have found that magnetic fields have a significant impact on the formation of ice crystals during freezing, and can reduce the freezing temperature of food. For this reason, some air-cooled refrigeration equipment is also equipped with a magnetic field generator to provide a magnetic field to the stored food (especially high-end food) to achieve the purpose of keeping the stored food fresh at low temperatures.

[0004] However, the magnetic field generating device increases the energy consumption of the air-cooled refrigeration equipment, so that the existing air-cooled refrigeration equipment needs to be further optimized. Summary of the invention

[0005] An object of the present invention is to provide an air-cooled refrigeration device with a magnetic field generating device having low energy consumption.

[0006] To achieve the above-mentioned purpose, the present invention provides an air-cooled refrigeration device, comprising an equipment body, an air-cooling system attached to the equipment body and a drawer that can be pulled out relative to the equipment body, the drawer being able to receive cold air provided by the air-cooling system to cool the stored objects in the drawer; the air-cooled refrigeration device also includes a magnetic field generating device and a detection device, the magnetic field generating device generating a magnetic field acting on the stored objects in the drawer when powered on, and the detection device being used to detect whether the drawer is pulled out; the magnetic field generating device and the detection device are configured such that when the detection device detects that the drawer is pulled out, the magnetic field generating device is powered off.

[0007] Optionally, the air cooling system includes a damper, which is configured to be closed when the magnetic field generating device is in a power-off state, prohibiting the air cooling system from providing cold air to the drawer; and to be opened when the magnetic field generating device is in a power-on state, so that the air cooling system provides cold air to the drawer.

[0008] Optionally, the damper is further configured to open when the detection device detects that the drawer has returned to an initial position and when the magnetic field generating device is powered on, so that the air cooling system provides cool air to the drawer.

[0009] Optionally, the air-cooled refrigeration equipment also includes a temperature sensor for detecting the temperature in the drawer, and the damper is further configured to, when the magnetic field generating device is powered on, open if the temperature sensor detects that the temperature in the drawer is in a preset high temperature range; and close if the temperature sensor detects that the temperature in the drawer is in a preset low temperature range.

[0010] Optionally, the detection device includes a magnet and a magnetic field sensor, one of the magnet and the magnetic field sensor is arranged on the drawer, and the other of the magnet and the magnetic field sensor is arranged on the device body.

[0011] Optionally, the magnetic field sensor is a Hall switch or a reed switch.

[0012] Optionally, the detection device includes a micro switch, and the micro switch is arranged on the device body or the drawer.

[0013] Optionally, the magnetic field generating device comprises a first electromagnetic coil and a second electromagnetic coil arranged on opposite sides of the drawer.

[0014] Optionally, the magnetic field generating device further comprises a first magnetic conductive member corresponding to the first electromagnetic coil and a second magnetic conductive member corresponding to the second electromagnetic coil; and / or,

[0015] The air-cooled refrigeration equipment also includes a first accommodating chamber for placing the first electromagnetic coil and a second accommodating chamber for placing the second electromagnetic coil. The first accommodating chamber and the second accommodating chamber are respectively connected to the drawer so that the cold air provided by the air-cooling system enters the drawer via the first accommodating chamber and the second accommodating chamber.

[0016] Optionally, the magnetic field generating device is further configured to be powered on when the temperature in the drawer drops below a preset temperature.

[0017] Based on the foregoing description, those skilled in the art can understand that, in the aforementioned technical solution of the present invention, by making the magnetic field generating device power off when the detection device detects that the drawer is pulled out, it is avoided that the magnetic field generating device does useless work when the drawer is pulled out, so that the magnetic field generated by the magnetic field generating device during the power-on process can act on the stored objects in the drawer. Therefore, the air-cooled refrigeration device of the present invention reduces energy consumption by improving the utilization rate of the magnetic field.

[0018] Furthermore, by turning on the magnetic field generating device only when the temperature in the drawer drops below a preset temperature, the stored objects are only affected by the magnetic field generated by the magnetic field generating device when the temperature is relatively low (especially close to the freezing temperature), thereby preventing the stored objects from freezing. Therefore, the present invention enables the air-cooled refrigeration equipment to further improve the utilization rate of the magnetic field and further reduce energy consumption.

[0019] Furthermore, by providing a weighing sensor for weighing the drawer or an image recognition unit for identifying whether there are stored objects in the drawer, it is possible to determine whether there are stored objects in the drawer, and the magnetic field generating device is powered on only when there are stored objects in the drawer, thereby avoiding wasting electricity when the magnetic field generating device is powered on when there are no stored objects in the drawer.

[0020] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, some embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that the same reference numerals indicate the same or similar components or parts in different drawings; the drawings of the present invention are not necessarily drawn to scale.

[0022] In the attached figure:

[0023] Figure 1 is a schematic diagram of the effect of an air-cooled refrigeration device in some embodiments of the present invention;

[0024] Figure 2 is a schematic diagram of the principle of an air-cooled refrigeration device in some embodiments of the present invention;

[0025] Figure 3 is a schematic diagram of an axonometric effect of a magnetic field generating device and a drawer in some embodiments of the present invention;

[0026] Figure 4 is an isometric view of a magnetic field generating device in some embodiments of the present invention;

[0027] Figure 5 is a front upper isometric view of a drawer container and a magnetic field generating device in some embodiments of the present invention;

[0028] Figure 6 is a front lower isometric view of a drawer container and a magnetic field generating device in some embodiments of the present invention;

[0029] Figure 7 is a schematic diagram of the effect of the detection device in some embodiments of the present invention;

[0030] Figure 8is a schematic diagram of the effect of the detection device in other embodiments of the present invention;

[0031] Fig. 9 It is a partial principle schematic diagram of air-cooled refrigeration equipment in some other embodiments of the present invention. DETAILED DESCRIPTION

[0032] It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present invention, rather than all embodiments of the present invention, and these embodiments are intended to explain the technical principles of the present invention, rather than to limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present invention.

[0033] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships 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, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of 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 circumstances.

[0035] Figure 1 is a schematic diagram of the effect of air-cooled refrigeration equipment in some embodiments of the present invention, Figure 2 is a schematic diagram of the principle of an air-cooled refrigeration device in some embodiments of the present invention, Figure 3 is a schematic diagram of an isometric effect of a magnetic field generating device and a drawer in some embodiments of the present invention, Figure 4 is an isometric view of a magnetic field generating device in some embodiments of the present invention, Figure 5 is a front upper isometric view of a drawer container and a magnetic field generating device in some embodiments of the present invention, Figure 6 is a front lower isometric view of a drawer container and a magnetic field generating device in some embodiments of the present invention, Figure 7It is a schematic diagram of the effect of the detection device in some embodiments of the present invention.

[0036] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the air-cooled refrigeration device includes an equipment body 10, a drawer 20, an air-cooling system 30, a magnetic field generating device 40 and a temperature sensor 60. The drawer 20 is installed on the equipment body 10 in a pull-out manner, and the drawer 20 is used to store stored objects (including food, medicines, wine, biological reagents, bacterial colonies, chemical reagents, etc.). The air-cooling system 30 is attached to the equipment body 10 and can provide cold air to the drawer 20 to cool the stored objects in the drawer 20. The magnetic field generating device 40 is used to generate a magnetic field, and the magnetic field acts on the stored objects in the drawer 20. The temperature sensor 60 detects the temperature of the air in the drawer 20 directly or indirectly.

[0037] like Figure 1 As shown, the device body 10 includes a drawer container 11, and the drawer 20 is installed on the drawer container 11 in a pullable manner. The drawer container 11 can be a component configured separately for the drawer 20, or it can be a refrigerator liner, a freezer liner, or a variable temperature liner of an air-cooled refrigeration device.

[0038] like Figure 2 As shown, the drawer container 11 is provided with a cold air inlet 111 and a cold air outlet 112. The drawer container 11 receives cold air provided by the air cooling system 30 through the cold air inlet 111, so that the cold air cools the stored items in the drawer 20. The air in the drawer container 11 is discharged from the drawer container 11 through the cold air outlet 112.

[0039] like Figure 2 As shown, in some embodiments of the present invention, the air cooling system 30 includes a freezing chamber 31, an air supply duct 32, a return air duct 33, an evaporator 34, a fan 35 and a damper 36. The freezing chamber 31 is connected to the drawer container 11 through the air supply duct 32 and the return air duct 33, respectively. Specifically, the freezing chamber 31 is connected to the cold air inlet 111 through the air supply duct 32, and the freezing chamber 31 is connected to the cold air outlet 112 through the return air duct 33. The evaporator 34 is arranged in the freezing chamber 31, and is used to cool the air in the freezing chamber 31. The fan 35 is arranged in the freezing chamber 31 or the air supply duct 32 or the return air duct 33, and is used to drive the air flow in the freezing chamber 31, and thus form the cold air flowing to the drawer container 11. The damper 36 is arranged in the air supply duct 32, and preferably, the damper 36 is arranged in the air supply duct 32 at a position close to the cold air inlet 111. When the damper 36 is opened, the cold air in the air supply duct 32 can flow to the drawer container 11 ; when the damper 36 is closed, the cold air in the air supply duct 32 cannot flow to the drawer container 11 .

[0040] like Figures 2 to 6 As shown, the magnetic field generating device 40 includes a first electromagnetic coil 41, a second electromagnetic coil 42, a first magnetic conductive member 43, a second magnetic conductive member 44 and a magnetic conductive connector 45. The first electromagnetic coil 41 and the second electromagnetic coil 42 are arranged on opposite sides of the drawer 20. Preferably, the first electromagnetic coil 41 and the second electromagnetic coil 42 are arranged on the top side and the bottom side of the drawer 20, respectively; further preferably, the first electromagnetic coil 41 and the second electromagnetic coil 42 are both arranged on the outside of the drawer container 11 to prevent the heat generated during the power-on process of the first electromagnetic coil 41 and the second electromagnetic coil 42 from affecting the refrigeration or freezing of the stored objects in the drawer 20.

[0041] In addition, in other embodiments of the present invention, those skilled in the art may also, as needed, respectively arrange the first electromagnetic coil 41 and the second electromagnetic coil 42 on the left and right sides of the drawer 20; and selectively arrange the first electromagnetic coil 41 and the second electromagnetic coil 42 on the inner side of the drawer container 11, so that the first electromagnetic coil 41 and the second electromagnetic coil 42 can also be cooled by the cold air entering the drawer container 11.

[0042] Continue reading Figures 2 to 6 , the first magnetic conductive member 43 corresponds to the first electromagnetic coil 41, and the second magnetic conductive member 44 corresponds to the second electromagnetic coil 42. The first magnetic conductive member 43 and the second magnetic conductive member 44 are used to assist the first electromagnetic coil 41 and the second electromagnetic coil 42 to form a magnetic field with uniform strength in the drawer 20, so that the food in each area of ​​the drawer 20 can be in the same magnetic field environment, providing a good magnetic field preservation environment for the stored items in the drawer 20. In addition, the provision of the first magnetic conductive member 43 and the second magnetic conductive member 44 also facilitates the control of the strength of the magnetic field formed by the first electromagnetic coil 41 and the second electromagnetic coil 42, avoiding the situation where the strength of the magnetic field in a local area of ​​the drawer 20 is too high or too low.

[0043] like Figures 3 to 6 As shown, the magnetic conductive connector 45 connects the first magnetic conductive component 43 and the second magnetic conductive component 44 together.

[0044] In the present invention, the magnetic conductive connector 45 can at least prevent the magnetic field of the first electromagnetic coil 41 and the second electromagnetic coil 42 from leaking, that is, it is used to limit the magnetic field generated by the first electromagnetic coil 41 and the second electromagnetic coil 42, specifically, to limit the magnetic field generated by the first electromagnetic coil 41 and the second electromagnetic coil 42 within the drawer 20, so that the magnetic field can act on the stored objects in the drawer 20 as much as possible. Therefore, the present invention improves the utilization rate of the magnetic field of the first electromagnetic coil 41 and the second electromagnetic coil 42 by providing the first magnetic conductive member 43, the second magnetic conductive member 44 and the magnetic conductive connector 45.

[0045] It should be noted that the first magnetic conductive component 43, the second magnetic conductive component 44 and the magnetic conductive connector 45 can be any feasible magnetic conductive component, such as silicon steel sheet, 45 Permalloy, 78 Permalloy, super Permalloy, etc.

[0046] like Figure 5 and Figure 6 As shown, the first magnetic conductive member 43, the second magnetic conductive member 44 and the magnetic conductive connecting member 45 are also arranged on the outside of the drawer container 11 to facilitate the installation and fixation of the first magnetic conductive member 43, the second magnetic conductive member 44 and the magnetic conductive connecting member 45. Of course, those skilled in the art can also arrange the first magnetic conductive member 43, the second magnetic conductive member 44 and the magnetic conductive connecting member 45 on the inside of the drawer container 11 as needed.

[0047] like Figure 2 and Figure 7 As shown, in some embodiments of the present invention, the detection device 50 includes a magnet 51 and a magnetic field sensor 52. The magnet 51 is disposed on the drawer 20, and the magnetic field sensor 52 is disposed on the drawer container 11. In addition, those skilled in the art may also dispose the magnet 51 on the drawer container 11 and dispose the magnetic field sensor 52 on the drawer 20 as required.

[0048] In some embodiments of the present invention, when the drawer 20 is in the initial position (inserted into the drawer container 11), the magnetic field sensor 52 detects the magnetic field generated by the magnet 51, so that the air-cooled refrigeration device can determine that the drawer 20 is in the initial position.

[0049] In addition, in other embodiments of the present invention, those skilled in the art may also, as needed, enable the magnetic field sensor 52 to detect the magnetic field generated by the magnet 51 when the drawer 20 is completely pulled out of the drawer container 11, so that the air-cooled refrigeration device can determine that the drawer 20 is pulled out.

[0050] In the present invention, the magnetic field sensor 52 is a Hall switch or a reed switch.

[0051] Figure 8 Schematic diagram of the effect of the detection device 50 in other embodiments of the present invention.

[0052] like Figure 8 As shown, in other embodiments of the present invention, the detection device 50 includes a micro switch 53, which is arranged on the device body 10 (specifically, the drawer container 11). When the drawer 20 moves to the initial position, the micro switch 53 is triggered, so that the air-cooled refrigeration device determines that the drawer 20 is in the initial position.

[0053] In addition, in other embodiments of the present invention, those skilled in the art may also set the micro switch 53 on the drawer 20 as needed.

[0054] Fig. 9 It is a partial principle schematic diagram of air-cooled refrigeration equipment in some other embodiments of the present invention.

[0055] like Fig. 9 As shown, in some further embodiments of the present invention, the device body 10 further includes a top cover 12, a bottom cover 13 and a side cover 14. The top cover 12 is arranged on the top side of the drawer container 11, and defines a first accommodating cavity 15 together with the top wall of the drawer container 11. The bottom cover 13 is arranged on the bottom side of the drawer container 11, and defines a second accommodating cavity 16 together with the bottom wall of the drawer container 11. The side cover 14 is arranged on the left and / or right side of the drawer container 11, and defines a connecting channel 17 together with the side wall of the drawer container 11. The first accommodating cavity 15 is used to place the first electromagnetic coil 41 and the first magnetic conductive member 43. The second accommodating cavity 16 is used to place the second electromagnetic coil 42 and the second magnetic conductive member 44. One end of the connecting channel 17 is connected to the first accommodating cavity 15, and the other end of the connecting channel 17 is connected to the second accommodating cavity 16.

[0056] Continue reading Fig. 9 , the cold air inlet 111 is formed on the side wall of the first accommodating chamber 15. A bottom through hole 161 is provided on the top wall of the second accommodating chamber 16, one end of the bottom through hole 161 is communicated with the second accommodating chamber 16, and the other end of the bottom through hole 161 is communicated with the inner cavity of the drawer container 11. A side through hole 171 is provided on the side wall of the communication channel 17, one end of the side through hole 171 is communicated with the communication channel 17, and the other end of the side through hole 171 is communicated with the inner cavity of the drawer container 11.

[0057] Continue reading Fig. 9 , the cold air enters the first accommodating chamber 15 from the cold air inlet 111, cools the first electromagnetic coil 41 in the first accommodating chamber 15 and enters the connecting passage 17. A part of the cold air in the connecting passage 17 enters the drawer container 11 through the side through hole 171 and blows toward the side wall of the drawer 20; another part of the cold air in the connecting passage 17 enters the second accommodating chamber 16, and then enters the drawer container 11 from the bottom through hole 161 and blows toward the bottom wall of the drawer 20.

[0058] Alternatively, those skilled in the art may also omit the side through holes 171 as needed, so that the cold air enters the drawer container 11 from the bottom through holes 161 and blows toward the bottom wall of the drawer 20 .

[0059] It will be understood by those skilled in the art that, in some further embodiments of the invention, by blowing cold air toward the bottom wall and side walls of the drawer 20, direct blowing of cold air onto stored items in the drawer 20 is avoided, thereby preventing heat loss and freezing of the stored items.

[0060] Refer to the following Figure 2The working principles of the damper 36 and the magnetic field generating device 40 of the present invention are described in detail.

[0061] In the present invention, the magnetic field generating device 40 and the detection device 50 are configured such that when the detection device 50 detects that the drawer 20 is pulled out, the magnetic field generating device 40 is powered off; so as to avoid the magnetic field generating device 40 doing useless work when the drawer 20 is pulled out (that is, the generated magnetic field will not act on the stored objects in the drawer 20), thereby improving the utilization rate of the magnetic field and reducing energy consumption.

[0062] Furthermore, the damper 36 is closed when the magnetic field generating device 40 is powered off, and the air cooling system is prohibited from providing cold air to the drawer 20, so as to prevent the cold air from escaping to the outside from the opened drawer 20, thereby wasting the cold capacity of the air-cooled refrigeration equipment, thereby reducing the energy consumption of the air-cooled refrigeration equipment. The damper 36 can be opened when the magnetic field generating device 40 is powered on, so that the air cooling system 30 provides cold air to the drawer 20 to cool the stored items in the drawer 20.

[0063] Optionally, the damper 36 is activated when the detection device 50 detects that the drawer 20 has returned to its initial position (eg, Figure 5 and Figure 6 The position of the drawer 20 relative to the drawer container 11) is adjusted, and is turned on when the magnetic field generating device 40 is powered on, so that the air cooling system 30 provides cold air to the drawer 20. Specifically, when the user pushes the drawer 20 back from the withdrawn position to the drawer container 11, the drawer 20 is turned on when the magnetic field generating device 40 is powered on. Figure 5 and Figure 6 When the drawer 20 is in a position relative to the drawer container 11, the magnetic field sensor 52 or the micro switch 53 of the detection device 50 is triggered, and the magnetic field generating device 40 is powered on to start generating a magnetic field, and the stored items in the drawer 20 are kept fresh by the magnetic field. When the air-cooled refrigeration device detects that the magnetic field generating device 40 is powered on, the air door 36 is opened to allow the air-cooling system 30 to provide cold air to the drawer 20.

[0064] Optionally, when the magnetic field generating device 40 is powered on, if the temperature sensor 60 detects that the temperature inside the drawer 20 is in a preset high temperature range, the damper 36 is opened to cool the stored items in the drawer 20; if the temperature sensor 60 detects that the temperature inside the drawer 20 is in a preset low temperature range, the damper 36 is closed to prevent the stored items in the drawer 20 from freezing due to excessive cooling.

[0065] The preset high temperature region is a temperature region with a temperature value greater than or equal to the preset temperature value, and the preset low temperature region is a temperature region with a temperature value less than or equal to the preset temperature value. The preset temperature value is a temperature that can keep the stored items fresh for a long time, for example, it can be any feasible temperature value such as 0°C, -1°C, -2°C, -4°C, etc.

[0066] Further optionally, when the detection device 50 detects that the drawer 20 has returned to its initial position, the magnetic field generating device 40 is powered on again when the temperature inside the drawer 20 drops below a preset temperature, so that the stored objects in the drawer 20 are affected by the magnetic field generated by the magnetic field generating device 40 only when the temperature is relatively low (especially close to the freezing temperature), thereby preventing the stored objects from freezing and reducing the energy consumption of the air-cooled refrigeration equipment.

[0067] Furthermore, in order to prevent the magnetic field generating device 40 from doing useless work, the air-cooled refrigeration device of the present invention further includes a weighing sensor for weighing the drawer 20. Only when the weight detected by the weighing sensor exceeds the weight of the drawer 20 itself, the magnetic field generating device 40 is allowed to be powered on and the damper 36 is allowed to be opened, thereby avoiding waste of electric energy and waste of cooling capacity.

[0068] Alternatively, the weighing sensor may be replaced with an image recognition unit to identify whether there are stored objects in the drawer 20. Only when the image recognition unit identifies that there are stored objects in the drawer 20, the magnetic field generating device 40 is energized and the damper 36 is opened, thereby avoiding waste of electric energy and cooling capacity.

[0069] So far, the technical solution of the present invention has been described in combination with the above multiple embodiments, but it is easy for those skilled in the art to 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 embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principles of the present invention will fall within the protection scope of the present invention.

Claims

1. An air-cooled refrigeration device, comprising a device body, an air-cooling system attached to the device body, and a drawer that can be pulled out relative to the device body, wherein the drawer can receive cold air provided by the air-cooling system to cool stored items in the drawer; The air-cooled refrigeration device further comprises a magnetic field generating device and a detection device, wherein the magnetic field generating device generates a magnetic field acting on the stored objects in the drawer when powered on, and the detection device is used to detect whether the drawer is pulled out; The magnetic field generating device and the detecting device are configured such that when the detecting device detects that the drawer is pulled out, the magnetic field generating device is powered off; The device body further defines a first accommodating cavity located at the top side of the drawer, a second accommodating cavity located at the bottom side of the drawer, and a connecting channel located at the left side and / or the right side of the drawer, wherein the connecting channel connects the first accommodating cavity with the second accommodating cavity; a cold air inlet is formed on the side wall of the first accommodating cavity, a bottom through hole is provided on the top wall of the second accommodating cavity, and a side through hole is provided on the side wall of the connecting channel; The magnetic field generating device includes a first electromagnetic coil placed in the first accommodating cavity and a second electromagnetic coil placed in the second accommodating cavity, so that the cold air provided by the air cooling system cools the first electromagnetic coil and the second electromagnetic coil, and then blows toward the bottom wall and side walls of the drawer through the bottom through hole and the side through hole to prevent direct blowing of the stored objects.

2. The air-cooled refrigeration device according to claim 1, wherein: The air cooling system comprises an air door, The damper is configured to be closed when the magnetic field generating device is in a power-off state, prohibiting the air cooling system from providing cold air to the drawer; and to be opened when the magnetic field generating device is in a power-on state, so that the air cooling system can provide cold air to the drawer.

3. The air-cooled refrigeration device according to claim 2, wherein: The damper is also configured to open when the detection device detects that the drawer has returned to an initial position and when the magnetic field generating device is powered on, so that the air cooling system provides cool air to the drawer.

4. The air-cooled refrigeration device according to claim 2, wherein: The air-cooled refrigeration device also includes a temperature sensor for detecting the temperature in the drawer. The damper is also configured to open if the temperature sensor detects that the temperature in the drawer is in a preset high temperature range when the magnetic field generating device is powered on, and to close if the temperature sensor detects that the temperature in the drawer is in a preset low temperature range.

5. The air-cooled refrigeration device according to any one of claims 1 to 4, wherein: The detection device comprises a magnet and a magnetic field sensor, one of the magnet and the magnetic field sensor is arranged on the drawer, and the other of the magnet and the magnetic field sensor is arranged on the device body.

6. The air-cooled refrigeration device according to claim 5, wherein: The magnetic field sensor is a Hall switch or a reed switch.

7. The air-cooled refrigeration device according to any one of claims 1 to 4, wherein: The detection device comprises a micro switch, and the micro switch is arranged on the device body or the drawer.

8. The air-cooled refrigeration device according to any one of claims 1 to 4, wherein: The magnetic field generating device further includes a first magnetic conductive component corresponding to the first electromagnetic coil and a second magnetic conductive component corresponding to the second electromagnetic coil.

9. The air-cooled refrigeration device according to claim 1, wherein: The magnetic field generating device is further configured to be powered on when the temperature in the drawer drops below a preset temperature.

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