Air-cooled cooling machine

Abstract

The present invention provides an air-cooled cooling device, which includes an equipment body, an air-cooling system mounted on the equipment body, and a drawer that can be pulled out from the equipment body, and the drawer can cool items stored in the drawer by receiving cold air supplied from the air-cooling system, and further includes a magnetic field generating device and a detection device, the magnetic field generating device generates a magnetic field acting on items stored in the drawer when powered on, and the detection device detects whether the drawer has been pulled out, and the magnetic field generating device and the detection device are configured such that the magnetic field generating device cuts off power when the detection device detects that the drawer has been pulled out. The air-cooled cooling device increases the utilization rate of the magnetic field and reduces energy consumption, thereby improving the use experience of the air-cooled cooling device, especially a smart refrigerator.

Description

[Technical field]

[0001] The present invention relates to the technical field of refrigeration and freezing, and specifically provides an air-cooled cooling device. [Background technology]

[0002] Air-cooled cooling equipment is equipment used to refrigerate or freeze stored items (including food ingredients, medicines, alcoholic beverages, biological reagents, colonies, chemical reagents, etc.).

[0003] Theoretical research has found that a magnetic field has a significant effect on the formation of ice crystals during the freezing process and can lower the freezing temperature of food. Therefore, some air-cooled cooling equipment is also equipped with a magnetic field generator to supply a magnetic field to the stored items (especially high-quality food items) so as to achieve the purpose of keeping the stored items fresh at a low temperature.

[0004] However, since the magnetic field generating device increases the energy consumption of the air-cooled cooling equipment, the conventional air-cooled cooling equipment needs to be further optimized. Summary of the Invention [Problem to be solved by the invention]

[0005] One object of the present invention is to provide an air-cooled cooling device with low energy consumption for the magnetic field generating device. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides an air-cooled cooling device, comprising: a device main body, an air-cooling system attached to the device main body, and a drawer that can be pulled out from the device main body, the drawer being capable of cooling items stored in the drawer by receiving cold air supplied from the air-cooling system, the air-cooled cooling device further comprising a magnetic field generating device and a detection device, the magnetic field generating device generating a magnetic field acting on items stored in the drawer when powered, the detection device detecting whether the drawer has been pulled out, and the magnetic field generating device and the detection device being configured such that the magnetic field generating device cuts off power when the detection device detects that the drawer has been pulled out.

[0007] Preferably, 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, thereby preventing the air-cooling system from supplying cool air to the drawer, and which can be opened when the magnetic field generating device is in a power-on state, thereby allowing the air-cooling system to supply cool air to the drawer.

[0008] Preferably, the damper is further configured to open when the detection device detects that the drawer has returned to its initial position and when the magnetic field generating device is energized, thereby causing the air-cooling system to supply cool air to the drawer.

[0009] Preferably, the air-cooled cooling equipment further comprises a temperature sensor for detecting the temperature inside the drawer, and the damper is further configured to be opened when the temperature sensor detects that the temperature inside the drawer is in a predetermined high temperature zone when the magnetic field generating device is energized, and to be closed when the temperature sensor detects that the temperature inside the drawer is in a predetermined low temperature zone.

[0010] Preferably, the detection device includes a magnet and a magnetic sensor, one of the magnet and the magnetic sensor being attached to the drawer, and the other of the magnet and the magnetic sensor being attached to the device body.

[0011] Preferably, the magnetic sensor is a Hall switch or a Reed switch.

[0012] Preferably, the detection device includes a microswitch, and the microswitch is attached to the device body or the drawer.

[0013] Preferably, the magnetic field generating device includes a first electromagnetic coil and a second electromagnetic coil arranged on either side of the drawer.

[0014] Preferably, the magnetic field generating device further includes a first magnetic permeable member corresponding to the first electromagnetic coil and a second magnetic permeable member corresponding to the second electromagnetic coil; and / or The air-cooled cooling device further includes a first accommodating cavity for accommodating the first electromagnetic coil and a second accommodating cavity for accommodating the second electromagnetic coil, and the first accommodating cavity and the second accommodating cavity are each connected to the drawer such that cool air supplied from the air-cooling system enters the drawer via the first accommodating cavity and the second accommodating cavity.

[0015] Preferably, the magnetic field generating device is further configured to be re-energized when the temperature within the drawer falls below a predetermined temperature. Effect of the Invention

[0016] Based on the above description, a person skilled in the art can understand that: in the above-mentioned solution of the present invention, when the detection device detects that the drawer is pulled out, the magnetic field generating device cuts off the power supply, thereby preventing the magnetic field generating device from performing a useless operation when the drawer is pulled out, and the entire magnetic field generated while the magnetic field generating device is powered can act on the items stored in the drawer. Therefore, the air-cooled cooling device of the present invention reduces energy consumption by increasing the utilization rate of the magnetic field.

[0017] Furthermore, by turning on the magnetic field generator again when the temperature inside the drawer drops below a predetermined temperature, the stored items are only subjected to the magnetic field generated by the magnetic field generator when their temperature is low (especially when the temperature is close to the freezing point), preventing the stored items from freezing. Therefore, the air-cooled cooling device of the present invention further increases the utilization rate of the magnetic field and further reduces energy consumption.

[0018] Furthermore, by providing a weighing sensor for weighing the drawer or an image recognition means for recognizing whether or not there are stored items in the drawer, it is possible to determine whether or not there are stored items in the drawer, and the magnetic field generating device is energized again only when there are stored items in the drawer, thereby avoiding the waste of power caused by the magnetic field generating device being energized when there are no stored items in the drawer.

[0019] Based on the following detailed description of specific embodiments of the present invention with reference to the drawings, those skilled in the art will more clearly understand the above and its objects, advantages and features of the present invention.

[0020] In order to make the solution of the present invention more clearly explained, some embodiments of the present invention will be described hereinafter with reference to the drawings. As can be understood by those skilled in the art, parts or elements designated with the same reference numerals in different drawings are the same or similar, and the drawings of the present invention are not necessarily drawn to scale. [Brief description of the drawings]

[0021] [Figure 1] 1 is a schematic diagram showing the effect of an air-cooling type cooling device in some embodiments of the present invention. [Diagram 2] FIG. 1 is a principle schematic diagram of an air-cooling type cooling device in some embodiments of the present invention. [Diagram 3] 1 is a perspective view of a magnetic field generating device and a drawer according to some embodiments of the present invention; FIG. [Figure 4] FIG. 2 is a perspective view of a magnetic field generating device according to some embodiments of the present invention. [Diagram 5] FIG. 2 is a front top perspective view of a drawer bin and a magnetic field generating apparatus according to some embodiments of the present invention. [Figure 6] FIG. 2 is a front-bottom perspective view of a drawer bin and a magnetic field generating apparatus according to some embodiments of the present invention. [Figure 7] 3A to 3C are schematic diagrams illustrating the effect of a detection device in some embodiments of the present invention. [Figure 8] 5A to 5C are schematic diagrams illustrating the effect of a detection device in some other embodiments of the present invention. [Figure 9] FIG. 13 is a schematic diagram of the local principle of an air-cooled cooling device in still another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] As can be understood by those skilled in the art, the following embodiments are merely some of the embodiments of the present invention, not all of the embodiments of the present invention. The some of the embodiments are intended to interpret the technical principles of the present invention, and are not intended to limit the scope of protection of the present invention. All other embodiments made by those skilled in the art based on the embodiments of the present invention without labor worthy of inventive step should still be included in the scope of protection of the present invention.

[0023] It should be explained that in the description of the present invention, terms indicating directions or positional relationships, such as "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, and are only for ease of description, and do not necessarily indicate or imply that such devices or elements have a particular orientation and are configured or operated in a particular direction, and therefore cannot be understood as limitations on the present invention. Also, the terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0024] It should be further explained that in the description of the present invention, unless otherwise clearly specified and limited, the terms "attached", "connected" and "connected" should be understood in a broad sense. For example, they may be fixed connections, detachable connections, or integral connections. They may be mechanical connections or electrical connections. They may be directly connected, indirectly connected via an intermediate medium, or internal communication between two elements. Those skilled in the art should be able to understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0025] FIG. 1 is a schematic diagram of the effect of an air-cooled cooling device in some embodiments of the present invention, FIG. 2 is a schematic diagram of the principle of an air-cooled cooling device in some embodiments of the present invention, FIG. 3 is a schematic diagram of the perspective effect of a magnetic field generating device and a drawer in some embodiments of the present invention, FIG. 4 is a perspective view of a magnetic field generating device in some embodiments of the present invention, FIG. 5 is a front-upper perspective view of a drawer container and a magnetic field generating device in some embodiments of the present invention, FIG. 6 is a front-downper perspective view of a drawer container and a magnetic field generating device in some embodiments of the present invention, and FIG. 7 is a schematic diagram of the effect of a detection device in some embodiments of the present invention.

[0026] As shown in Fig. 1 and Fig. 2, in some embodiments of the present invention, the air-cooled cooling device includes a device body 10, a drawer 20, an air-cooling system 30, a magnetic field generator 40, and a temperature sensor 60. The drawer 20 is attached to the device body 10 so as to be retractable, and the drawer 20 stores items to be stored (including foodstuffs, medicines, alcoholic beverages, biological reagents, colonies, chemical reagents, etc.). The air-cooling system 30 is attached to the device body 10 and is capable of cooling the items to be stored in the drawer 20 by supplying cold air to the drawer 20. The magnetic field generator 40 generates a magnetic field, and the magnetic field acts on the items to be stored in the drawer 20. The temperature sensor 60 directly or indirectly detects the temperature of the air in the drawer 20.

[0027] 1, an equipment body 10 includes a drawer container 11, and a drawer 20 is attached to the drawer container 11 so as to be able to be pulled out. The drawer container 11 may be a component provided separately for the drawer 20, or may be an inner box of a refrigerator compartment, an inner box of a freezer compartment, or an inner box of a variable temperature compartment of an air-cooled cooling equipment.

[0028] 2, 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 supplied from the air-cooling system 30 via the cold air inlet 111, and uses the cold air to cool the items stored in the drawers 20. The air within the drawer container 11 is exhausted from the drawer container 11 via the cold air outlet 112.

[0029] As shown in FIG. 2, in some embodiments of the present invention, the air-cooling system 30 includes a freezer compartment 31, a blower air duct 32, a return air duct 33, an evaporator 34, a fan 35, and a damper 36. The freezer compartment 31 is connected to the drawer container 11 via the blower air duct 32 and the return air duct 33. Specifically, the freezer compartment 31 is connected to the cold air inlet 111 via the blower air duct 32, and the freezer compartment 31 is connected to the cold air outlet 112 via the return air duct 33. The evaporator 34 is disposed in the freezer compartment 31 and cools the air in the freezer compartment 31. The fan 35 is disposed in the freezer compartment 31, the blower air duct 32, or the return air duct 33 and drives the flow of air in the freezer compartment 31 to form cold air flowing to the drawer container 11. The damper 36 is disposed in the blower air duct 32. Preferably, damper 36 is disposed in a position adjacent to cold air inlet 111 in air supply duct 32. When damper 36 is open, cold air in air supply duct 32 can flow into drawer container 11, and when damper 36 is closed, cold air in air supply duct 32 cannot flow into drawer container 11.

[0030] 2 to 6, the magnetic field generating device 40 includes a first electromagnetic coil 41, a second electromagnetic coil 42, a first magnetically permeable member 43, a second magnetically permeable member 44, and a magnetically permeable connecting member 45. The first electromagnetic coil 41 and the second electromagnetic coil 42 are disposed on both sides of the drawer 20. Preferably, the first electromagnetic coil 41 and the second electromagnetic coil 42 are disposed on the top side and the bottom side of the drawer 20, respectively, and more preferably, the first electromagnetic coil 41 and the second electromagnetic coil 42 are both disposed outside the drawer container 11, thereby preventing heat generated during the energization of the first electromagnetic coil 41 and the second electromagnetic coil 42 from affecting the refrigeration or freezing of the items stored in the drawer 20.

[0031] In addition, in other embodiments of the present invention, those skilled in the art may arrange the first and second electromagnetic coils 41 and 42 on the left and right sides of the drawer 20, respectively, and selectively arrange the first and second electromagnetic coils 41 and 42 inside the drawer container 11, as necessary. In this way, the first and second electromagnetic coils 41 and 42 can also be cooled by the cold air entering the drawer container 11.

[0032] 2 to 6, the first magnetic permeable member 43 corresponds to the first electromagnetic coil 41, and the second magnetic permeable member 44 corresponds to the second electromagnetic coil 42. The first magnetic permeable member 43 and the second magnetic permeable member 44 assist the first magnetic coil 41 and the second magnetic coil 42 in forming a magnetic field of uniform strength within the drawer 20, thereby ensuring that food in each area within the drawer 20 is in the same magnetic field environment, providing a good magnetic freshness preservation environment for the stored items within the drawer 20. In addition, the arrangement of the first magnetic permeable member 43 and the second magnetic permeable member 44 makes it easy to control the strength of the magnetic field formed by the first magnetic coil 41 and the second magnetic coil 42, and prevents the magnetic field strength from being too high or too low in a local area within the drawer 20.

[0033] As shown in FIGS. 3 to 6, the magnetically permeable connecting member 45 connects the first magnetically permeable member 43 and the second magnetically permeable member 44 together.

[0034] In the present invention, the magnetically permeable connecting member 45 can prevent leakage of the magnetic field between at least the first magnetic coil 41 and the second magnetic coil 42. That is, it limits the magnetic field generated by the first magnetic coil 41 and the second magnetic coil 42. Specifically, by limiting the magnetic field generated by the first magnetic coil 41 and the second magnetic coil 42 within the drawer 20, the magnetic field acts on the stored items within the drawer 20 as much as possible. Therefore, in the present invention, by providing the first magnetically permeable member 43, the second magnetically permeable member 44, and the magnetically permeable connecting member 45, the utilization rate of the magnetic field between the first magnetic coil 41 and the second magnetic coil 42 is increased.

[0035] It should be noted that the first magnetically permeable member 43, the second magnetically permeable member 44 and the magnetically permeable connecting member 45 may be any practicable magnetically permeable material, such as silicon steel plate, 45 permalloy alloy, 78 permalloy alloy, supermalloy, etc.

[0036] 5 and 6, the first magnetic permeable member 43, the second magnetic permeable member 44 and the magnetic permeable connecting member 45 are also arranged outside the drawing container 11, which facilitates the installation and fixing of the first magnetic permeable member 43, the second magnetic permeable member 44 and the magnetic permeable connecting member 45. Of course, those skilled in the art may arrange the first magnetic permeable member 43, the second magnetic permeable member 44 and the magnetic permeable connecting member 45 inside the drawing container 11 as necessary.

[0037] 2 and 7, in some embodiments of the present invention, the detection device 50 includes a magnet 51 and a magnetic sensor 52. The magnet 51 is attached to the drawer 20, and the magnetic sensor 52 is attached to the drawer container 11. Alternatively, one skilled in the art may attach the magnet 51 to the drawer container 11 and the magnetic sensor 52 to the drawer 20, as needed.

[0038] In some embodiments of the present invention, when the drawer 20 is in the initial position (inserted into the drawer container 11), the magnetic sensor 52 detects the magnetic field generated by the magnet 51. Based on this, the air-cooled cooling device can determine that the drawer 20 is in the initial position.

[0039] Furthermore, in other embodiments of the present invention, if necessary, a person skilled in the art may cause the magnetic sensor 52 to detect the magnetic field generated by the magnet 51 when the drawer 20 is completely pulled out from within the drawer container 11. Based on this, the air-cooled cooling device can determine that the drawer 20 has been pulled out.

[0040] In the present invention, the magnetic sensor 52 is a Hall switch or a Reed switch.

[0041] FIG. 8 is a schematic diagram showing the effect of a detection device 50 in some other embodiments of the present invention.

[0042] 8, in some other embodiments of the present invention, the detection device 50 includes a microswitch 53, which is attached to the device body 10 (specifically, the drawer container 11). When the drawer 20 moves to the initial position, the microswitch 53 is triggered, so that the air-cooled cooling device can determine that the drawer 20 is in the initial position based on this.

[0043] Also, in other embodiments of the present invention, one skilled in the art may install a microswitch 53 in the drawer 20 as desired.

[0044] FIG. 9 is a schematic diagram of the local principle of an air-cooled cooling device in still another embodiment of the present invention.

[0045] As shown in FIG. 9, in some other 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 disposed on the top side of the drawer container 11 and defines a first housing cavity 15 together with the top wall of the drawer container 11. The bottom cover 13 is disposed on the bottom side of the drawer container 11 and defines a second housing cavity 16 together with the bottom wall of the drawer container 11. The side cover 14 is disposed on the left and / or right side of the drawer container 11 and defines a communication passage 17 together with the side wall of the drawer container 11. The first housing cavity 15 houses a first electromagnetic coil 41 and a first magnetic permeable member 43. The second housing cavity 16 houses a second electromagnetic coil 42 and a second magnetic permeable member 44. One end of the communication passage 17 communicates with the first accommodating cavity 15 , and the other end of the communication passage 17 communicates with the second accommodating cavity 16 .

[0046] 9, the cold air inlet 111 is formed in a side wall of the first accommodating cavity 15. A bottom through hole 161 is provided in a top wall of the second accommodating cavity 16, one end of which communicates with the second accommodating cavity 16 and the other end of which communicates with the inner space of the draw-out container 11. A side through hole 171 is provided in a side wall of the communication passage 17, one end of which communicates with the communication passage 17 and the other end of which communicates with the inner space of the draw-out container 11.

[0047] 9, the cold air enters the first accommodating cavity 15 through the cold air inlet 111, cools the first electromagnetic coil 41 in the first accommodating cavity 15, and then enters the communication passage 17. A portion of the cold air in the communication passage 17 enters the drawer container 11 via the side through-hole 171 and is blown against the side wall of the drawer 20, and another portion of the cold air in the communication passage 17 enters the second accommodating cavity 16, then enters the drawer container 11 through the bottom through-hole 161 and is blown against the bottom wall of the drawer 20.

[0048] Alternatively, one skilled in the art may omit the side through-holes 171 and have all of the cool air enter the drawer casing 11 through the bottom through-holes 161 and blow against the bottom wall of the drawer 20, if desired.

[0049] As will be understood by those skilled in the art, in some further embodiments of the present invention, the cold air is blown against the bottom and side walls of the drawer 20, thereby avoiding the cold air being blown directly onto the items stored in the drawer 20, thereby preventing the items from freezing due to excessive heat loss.

[0050] The operation principle of the damper 36 and the magnetic field generating device 40 in the present invention will be described in detail below with reference to FIG.

[0051] In the present invention, the magnetic field generator 40 and the detection device 50 are configured such that the magnetic field generator 40 cuts off the power supply when the detection device 50 detects that the drawer 20 has been pulled out. In this way, it is possible to prevent the magnetic field generator 40 from performing a useless operation when the drawer 20 is pulled out (i.e., the generated magnetic field does not act on the items stored in the drawer 20), thereby increasing the utilization rate of the magnetic field and reducing energy consumption.

[0052] Furthermore, the damper 36 is closed when the magnetic field generating device 40 is in a power-off state, prohibiting the air-cooling system 30 from supplying cold air to the drawer 20, thereby preventing cold air from leaking out of the drawn-out drawer 20 and wasting cold energy from the air-cooled cooling equipment, thereby reducing energy consumption of the air-cooled cooling equipment. The damper 36 can be opened when the magnetic field generating device 40 is in a power-on state, allowing the air-cooling system 30 to supply cold air to the drawer 20 to cool the items stored in the drawer 20.

[0053] Preferably, the damper 36 is opened when the detection device 50 detects that the drawer 20 has returned to its initial position (the position of the drawer 20 relative to the drawer container 11 in Figs. 5 and 6) and the magnetic field generating device 40 is energized, thereby allowing the air-cooling system 30 to supply cool air to the drawer 20. Specifically, when the user pushes the drawer 20 back from the pulled-out position to the position of the drawer 20 relative to the drawer container 11 in Figs. 5 and 6, the magnetic sensor 52 or the microswitch 53 of the detection device 50 is triggered, which causes the magnetic field generating device 40 to be energized and start generating a magnetic field, thereby performing magnetic freshness preservation for the stored items in the drawer 20. When the air-cooled cooling device detects that the magnetic field generating device 40 is energized, the damper 36 is opened, thereby allowing the air-cooling system 30 to supply cool air to the drawer 20.

[0054] Preferably, when the magnetic field generating device 40 is energized, the damper 36 is opened to cool the items stored in the drawer 20 only when the temperature sensor 60 detects that the temperature inside the drawer 20 is in a predetermined high temperature range, and when the temperature sensor 60 detects that the temperature inside the drawer 20 is in a predetermined low temperature range, the damper 36 is closed to prevent the items stored in the drawer 20 from being cooled too much and freezing.

[0055] Here, the predetermined high temperature range is a temperature range where the temperature value is equal to or higher than a predetermined temperature value, and the predetermined low temperature range is a temperature range where the temperature value is equal to or lower than a predetermined temperature value. The predetermined temperature value is a temperature that can maintain the freshness of the stored items for a long time, and may be any feasible temperature value such as 0°C, -1°C, -2°C, -4°C, etc.

[0056] More preferably, when the detection device 50 detects that the drawer 20 has returned to its initial position, the magnetic field generating device 40 is energized again when the temperature inside the drawer 20 drops below a predetermined temperature, so that the items stored in the drawer 20 are subjected to the magnetic field from the magnetic field generating device 40 only when their temperature is low (particularly when close to the freezing temperature), thereby preventing the stored items from freezing and reducing energy consumption of the air-cooled cooling equipment.

[0057] Furthermore, in order to prevent the magnetic field generating device 40 from working in vain, the air-cooled cooling device of the present invention further comprises 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, is the magnetic field generating device 40 allowed to be energized and the damper 36 allowed to be opened, thereby avoiding waste of electricity and cold.

[0058] Alternatively, the weighing sensor may be replaced by an image recognition means, which recognizes whether or not an item is present in drawer 20. Only when the image recognition means recognizes that an item is present in drawer 20, is the flow of electricity to magnetic field generating device 40 and the opening of damper 36 permitted, thereby avoiding waste of electricity and heat.

[0059] Although the technical solution of the present invention has been described above using several embodiments, it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. As long as it does not deviate from the technical principle of the present invention, those skilled in the art may divide or combine the technical solutions in the above embodiments, and may make equivalent modifications or replacements to the relevant technical features. Any modifications, equivalent replacements, improvements, etc. made within the technical idea and / or technical principle of the present invention are all included in the scope of protection of the present invention.

Claims

1. An air-cooled cooling device, The present invention includes an apparatus body, an air-cooling system attached to the apparatus body, and a drawer that can be drawn out from the apparatus body, The drawer is capable of cooling items stored in the drawer by receiving cold air supplied from the air cooling system, The air-cooled cooling device further includes a magnetic field generating device and a detection device, the magnetic field generating device generates a magnetic field acting on the items stored in the drawer when energized, and the detection device detects 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 has been pulled out, the magnetic field generating device cuts off current flow; In the device body, a first accommodating cavity located on the top side of the drawer, a second accommodating cavity located on the bottom side of the drawer, and a communication passage located on the left and / or right side of the drawer are separated by a wall from a space of the device body accommodating the drawer, the first accommodating cavity and the second accommodating cavity are communicated with each other via the communication passage, a cold air inlet is formed in a side wall of the first accommodating cavity, a bottom through hole is provided in a top wall of the second accommodating cavity, and a side through hole is provided in a side wall of the communication passage on the drawer side, The magnetic field generating device includes a first electromagnetic coil placed in the first storage cavity and a second electromagnetic coil placed in the second storage cavity, whereby the cold air supplied from the air cooling system cools the first electromagnetic coil and the second electromagnetic coil, and then is blown through the bottom through hole and the side through hole against the bottom wall and side wall of the drawer, thereby avoiding blowing directly onto the stored items.

2. the air cooling system includes a damper; 2. The air-cooled cooling device of claim 1, wherein the damper is configured to be closed when the magnetic field generating device is in a power-off state, thereby preventing the air-cooling system from supplying cool air to the drawer, and to be opened when the magnetic field generating device is in a power-on state, thereby allowing the air-cooling system to supply cool air to the drawer.

3. 3. The air-cooled cooling device according to claim 2, wherein the damper is further configured to open when the detection device detects that the drawer has returned to its initial position and when the magnetic field generating device is energized, thereby causing the air-cooling system to supply cool air to the drawer.

4. The air-cooled cooling device further includes a temperature sensor for detecting a temperature inside the drawer, 3. The air-cooled cooling device according to claim 2, further comprising a damper configured to open when the temperature sensor detects that the temperature inside the drawer is in a predetermined high temperature zone while the magnetic field generating device is energized, and to close when the temperature sensor detects that the temperature inside the drawer is in a predetermined low temperature zone.

5. The air-cooled cooling equipment according to any one of claims 1 to 4, wherein the detection device includes a magnet and a magnetic sensor, one of the magnet and the magnetic sensor being attached to the drawer, and the other of the magnet and the magnetic sensor being attached to the equipment body.

6. The air-cooled cooling device according to claim 5 , wherein the magnetic sensor is a Hall switch or a Reed switch.

7. The air-cooled cooling device according to any one of claims 1 to 4, wherein the detection device includes a microswitch, and the microswitch is attached to the device body or the drawer.

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

9. 5. The air-cooled cooling device according to claim 1, wherein the magnetic field generating device is further configured to be energized again when the temperature inside the drawer falls below a predetermined temperature.

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