Cooling equipment

By using compressed air for Carnot reverse cycle cooling, the problem of the single cooling method for high-temperature equipment in existing technologies is solved, and a highly efficient refrigerant-free cooling effect is achieved.

CN223786385UActive Publication Date: 2026-01-09TRINA SOLAR CO LTD
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Patent Information

Application Number
CN202520330329.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-27
Publication Date
2026-01-09
Estimated Expiration
2035-02-27

AI Technical Summary

Technical Problem

Existing technologies offer limited cooling methods for equipment under high-temperature conditions, and their effectiveness is poor, making it difficult to effectively cool down the equipment by increasing air volume or water flow.

Method used

Compressed air is used for Carnot reverse cycle cooling. By utilizing the structural cooperation of the air outlet unit and the blade unit, the cooling effect is improved by accelerating the work, thus achieving refrigerant-free cooling.

Benefits of technology

By using the Carnot reverse cycle process, compressed air is used to cool the equipment, improving the cooling effect and achieving efficient cooling without the need for refrigerant.

✦ Generated by Eureka AI based on patent content.

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Abstract

The embodiment of the utility model provides cooling equipment, and belongs to the technical field of cooling equipment. The cooling equipment comprises an air outlet unit, wherein the air outlet unit comprises a shell formed by connecting an upper wall, a bottom wall and a side wall in a closed mode; a containing cavity is formed among the upper wall, the bottom wall and the side wall, an opening is formed in the upper wall and forms an air inlet, and the air inlet communicates with the containing cavity; a plurality of slits are formed in the bottom wall and penetrate through the bottom wall; the blade unit comprises a rotating shaft and a plurality of blades, and the blades are fixedly connected with the rotating shaft and extend in the radial direction of the rotating shaft; the blade unit is arranged on the side, away from the upper wall, of the bottom wall, and air is blown to the blades from the slits to drive the blades to rotate. According to the embodiment of the invention, through the structural cooperation of the air outlet unit and the blade unit, the compressed air is cooled in the cooling equipment based on the Carnot reverse cycle, so that the target object is cooled. No refrigerant is needed in the cooling process, and the cooling effect can be improved in a mode of accelerating acting.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooling equipment, and in particular to a cooling equipment. BACKGROUND

[0002] At present, for cooling of high-temperature parts of equipment or heat generating components, air cooling or water cooling is mostly used. However, in the case of higher temperature, only the way of increasing air volume or water flow can be used for cooling, and the cooling means is single and the effect cannot sometimes reach the expectation, so a new cooling way is needed to be provided.

[0003] It should be noted that the above content is not necessarily prior art, and is not used to limit the patent protection scope of the present application. CONTENT OF THE UTILITY MODEL

[0004] Embodiments of the present application provide a cooling equipment to solve or alleviate one or more technical problems proposed above.

[0005] Embodiments of the present application provide a cooling equipment, comprising:

[0006] An air outlet unit, the air outlet unit comprises a shell formed by closed connection of an upper wall, a bottom wall and a side wall; a containing cavity is formed between the upper wall, the bottom wall and the side wall, the upper wall is provided with an opening, the opening forms an air inlet, the air inlet is communicated with the containing cavity; the bottom wall is provided with a plurality of slits, the slits penetrate through the bottom wall;

[0007] A blade unit, the blade unit comprises a rotating shaft and a plurality of blades, the plurality of blades are fixedly connected with the rotating shaft and extend toward the radial direction of the rotating shaft; the blade unit is arranged on the side of the bottom wall away from the upper wall, air is blown from the slits to the blades to drive the blades to rotate.

[0008] In an embodiment, the air outlet unit further comprises an extension wall, the extension wall extends from the side wall toward the direction away from the upper wall and is enclosed into a cylindrical shape, an air outlet is formed at the end of the extension wall away from the side wall, and the air outlet faces a target object to be cooled.

[0009] In an embodiment, the rotating shaft is arranged on the extension wall.

[0010] In an embodiment, the rotating direction of the rotating shaft and the extension direction of the slits form an angle of 65° to 110°.

[0011] In an embodiment, the width of the blade is 1 / 10-1 of the length of the slit.

[0012] In an embodiment, the number of the blades is 4-8.

[0013] In an embodiment, the bottom wall is provided with an inclined surface on the side away from the upper wall, the inclined surface is inclined toward the slits and is concave, and the inclination angle of the inclined surface is 20°-60°.

[0014] In an embodiment, the slit is inclined through the first surface of the bottom wall to the second surface of the bottom wall; the first surface and the second surface are two opposite surfaces; the angle of the inclination of the slit is 20-60°.

[0015] In an embodiment, further comprising an electronic unit, the electronic unit comprising one or more of an indicator light, an alarm light, and a temperature sensor; the kinetic energy of the rotation of the blades generates electric energy to power the electronic unit.

[0016] In an embodiment, further comprising:

[0017] A support frame, the support frame being fixedly connected with the air outlet unit;

[0018] An air supply pipeline, the air supply pipeline being in communication with and fixedly connected with the opening, and the air supply pipeline being in communication with the compressed air source.

[0019] In the embodiments of the present application, the structure of the air outlet unit and the blade unit is matched, so that the compressed air is cooled in the cooling device based on the Carnot reverse cycle, thereby achieving cooling of the target object. The cooling process does not require a refrigerant, and the cooling effect can be improved by accelerating the work. BRIEF DESCRIPTION OF DRAWINGS

[0020] In the drawings, like reference numerals refer to like elements throughout the various drawings. These drawings are not necessarily to scale. It should be understood that these drawings have been simplified for the purpose of clarity in illustrating the principles of the present application.

[0021] Figure 1 A cross-sectional structure schematic diagram of the cooling device provided by the embodiments of the present application is shown.

[0022] Figure 2 A Carnot reverse cycle curve schematic diagram in the embodiments of the present application is shown. DETAILED DESCRIPTION

[0023] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and embodiments.

[0024] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application and the above drawings merely mean differentiating like objects, and do not necessarily imply a specific order or sequence. It should be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the present application described herein are capable of accomplishing the same objectives if the embodiments of the present application were performed in a different order than that described herein. Moreover, the terms "comprise", "have" and any variations thereof are intended to cover a non-exclusive inclusion, for example, a process, method, article, or apparatus that comprises a list of steps or units is not necessarily limited to those steps or units that are clearly listed, but can include other not clearly listed steps or units inherent to such process, method, article, or apparatus.

[0025] In the present application, when a numerical interval (i.e., a numerical range) is involved, the distribution of the optional numbers in the numerical interval is considered to be continuous and includes both numerical end points (i.e., the minimum value and the maximum value) of the numerical interval and each number between the two numerical end points, unless otherwise specified. When a numerical interval refers only to integers in the numerical interval, unless otherwise specified, the two end point integers of the numerical range and each integer between the two end points are equivalent to directly listing each integer. When multiple numerical ranges are provided to describe a feature or a characteristic, the numerical ranges can be combined. In other words, unless otherwise specified, the numerical ranges disclosed in the present application should be understood to include any and all sub-ranges included therein. The "numbers" in the numerical interval can be any quantitative value, such as a number, a percentage, a ratio, etc. The "numerical interval" is intended to broadly include quantitative intervals such as percentage intervals, ratio intervals, and value intervals.

[0026] Hereinafter, exemplary embodiments according to the present application will be described in greater detail with reference to the accompanying drawings. It should be understood that the exemplary embodiments can be implemented in various forms and should not be construed as being limited to only the embodiments set forth herein.

[0027] The present application provides a cooling device, Figure 1 A cross-sectional structure schematic diagram of the cooling device provided by the present application is shown. As shown in the figure, Figure 1 The cooling device includes an air outlet unit and a vane unit.

[0028] The air outlet unit includes a housing formed by the closed connection of an upper wall 110, a bottom wall 120, and a side wall 130; a containing cavity is formed between the upper wall 110, the bottom wall 120, and the side wall 130, the upper wall 110 is provided with an opening 111, the opening 111 forms an air inlet, the air inlet communicates with the containing cavity; the bottom wall 120 is provided with a plurality of slits 121, the slits 121 penetrate through the bottom wall 120.

[0029] The slit 121 on the bottom wall 120 can be formed by drilling a long strip-shaped hole through the bottom wall 120, thereby forming the slit 121.

[0030] The side wall 130 can be a closed connection side wall 130, which can form a square column or a circular column after being closed connected. The upper wall 110 and the bottom wall 120 are respectively arranged above and below the square column / circular column, thereby realizing the closed connection of the upper wall 110, the bottom wall 120 and the side wall 130. After being closed, the inside forms a containing cavity, which can contain compressed air entering from the air inlet. The compressed air enters the containing cavity from the opening 111, and is discharged from the slit 121 to the side of the bottom wall 120 away from the containing cavity based on the action of pressure, thereby penetrating out of the containing cavity.

[0031] The blade unit includes a rotating shaft 210 and a plurality of blades 220, which are fixedly connected to the rotating shaft 210 and extend in the radial direction of the rotating shaft 210. The blade unit is arranged on the side of the bottom wall 120 away from the upper wall 110. Air is blown to the blades 220 from the slit 121, driving the blades 220 to rotate.

[0032] The rotating shaft 210 is an axis that can rotate around a center axis. An object fixed to the outside of the rotating shaft 210 can rotate with the rotating shaft 210, or be driven by an external force to drive the rotating shaft 210 to rotate.

[0033] The blades 220 are arranged on the rotating shaft 210, which facilitates contact with an external force to realize work based on the action of the external force, or drive the rotating shaft 210 to rotate.

[0034] The cooling device provided by the embodiment of the present application can be placed in the manner as shown in Figure 1 The target object to be cooled is arranged below the blade unit.

[0035] In some examples, the cooling device can also be rotated by 90° to the left or right in the manner as shown in Figure 1 to cool the target object on the side.

[0036] The cooling device provided by the embodiment of the present application uses compressed air as input medium to realize cooling. The cooling process is realized based on the Carnot inverse cycle.

[0037] As shown in Figure 2As shown, the Carnot reverse cycle includes 4 quasi-static processes, including 2 adiabatic processes and 2 isothermal processes, and the medium undergoes the process of A-D-C-B-A. Among them, BA and DC are isothermal lines, and AD and CB are adiabatic lines. The ideal gas is adiabatically expanded from A (P1, V1) state with temperature T1 to D (P4, V4), in which process the temperature of the gas gradually decreases, and the temperature at D is T2; then the gas is isothermally expanded to C (P3, V3), and the process from C to B (P2, V2) is an adiabatic compression process, and the temperature rises to T1, and finally the gas is isothermally compressed to point A, so that the gas returns to the initial state, and in this process, it transmits heat Q to the high-temperature heat source, thereby cooling the target object carrying the high-temperature heat source.

[0038] The compressed air source outputs high-temperature and high-pressure compressed air. When the compressed air enters the containing cavity from the air inlet, the adiabatic expansion process from A to D is implemented, and the air flows out from the slits 121 and does work (drives the rotation of the blades 220) when the air expands, so that the temperature decreases, thereby outputting air with a lower temperature to cool the target object.

[0039] In the embodiment of the present application, the structure of the air outlet unit and the blade unit is matched, so that the compressed air is cooled in the cooling device based on the Carnot reverse cycle, thereby realizing the cooling of the target object. The cooling process does not require refrigerant, and the cooling effect can be improved by accelerating the work.

[0040] In the embodiment of the present application, at least one radial direction of the rotating shaft 210 is parallel to the penetrating direction of the slits 121, so that the air blown out from the slits 121 can act on the blades 220 directly, thereby improving the work effect.

[0041] In one embodiment, the air outlet unit further includes an extension wall 140, which is extended from the side wall 130 towards the direction away from the upper wall 110 and enclosed into a cylindrical shape. An air outlet 141 is formed at one end of the extension wall 140 away from the side wall 130, and the air outlet 141 is directed towards the target object to be cooled.

[0042] The extension wall 140 can be understood as an extension of the side wall 130, so that the extension wall 140 is arranged protruding from the bottom wall 120, thereby forming the air outlet 141 at one end away from the bottom wall 120, i.e. at one end of the extension wall 140 away from the side wall 130.

[0043] The length of the extension wall 140 is greater than the radial length of the blade unit, so that the extension wall 140 can wrap the blade unit. The blade unit is completely immersed in the extension wall 140, so that the air blown out of the air outlet 141 can be accurately directed towards the target object for cooling.

[0044] In an embodiment, the rotating shaft 210 is arranged on the extending wall 140. The rotating shaft 210 is fixed on the extending wall 140 to fix the blade unit, so that the blades 220 of the blade unit can rotate based on the wind blown out of the slit 121. The axial direction of the rotating shaft 210 is parallel to the horizontal extending direction of the slit 121, or approximately parallel, which can make the wind blown out of the slit 121 work on the blades 220 with better effect, reducing the loss of wind power.

[0045] In an example, the rotating shaft 210 can be fixed at one end on the extending wall 140, and the other end is a free end. The blades 220 are fixed on the rotating shaft 210 close to the free end, which can facilitate the disassembly and maintenance of the blades 220, and improve the service life of the cooling device.

[0046] In an example, the rotating shaft 210 can be fixed at both ends on the extending wall 140. The blades 220 are fixed on the rotating shaft 210 at the middle position. This fixing mode can make the rotating shaft 210 more firmly fixed, and facilitate cooling under larger wind power. In addition, the rotating shaft 210 is horizontally arranged on the extending wall 140, which can stably keep the balance of the rotating shaft 210, and make the rotation of the blades 220 more stable.

[0047] In an embodiment, the rotating direction of the rotating shaft 210 forms an angle of 65° to 110° with the extending direction of the slit 121. The movement of the blades 220 drives the rotating shaft 210 to rotate. The movement direction of the blades 220 is the same as the rotating direction of the rotating shaft 210. The blades 220 move based on the wind blown out of the slit 121. The extending direction of the slit 121 is perpendicular or approximately perpendicular to the rotating direction of the blades 220, which can make the multiple strip-shaped winds blown out of the slit 121 act on the rotating blades 220, and more efficiently drive the blades 220 to rotate.

[0048] The rotating direction of the rotating shaft 210 can be perpendicular to the extending direction of the slit 121, i.e. forming an angle of 90°, or approximately perpendicular, i.e. forming an angle of 65°, 70°, 80°, 100° or 110°.

[0049] In an embodiment, the width of the blade 220 is 1 / 10-1 of the length of the slit 121. The width of the blade 220 can be the dimension of the blade 220 along the axial direction of the rotation shaft 210. The blade 220 is a three-dimensional arc-shaped blade, which can be similar to the blade of a household vertical fan. The wider the width of the blade 220, the more work it does, and the greater the wind it can generate. However, if the width of the blade 220 is too wide, for example, greater than the length of the slit 121, no wind acts on the position beyond the slit 121, and the width does not have a positive effect, but rather affects the rotation of the blade 220. If the width of the blade 220 is too narrow, the wind is too small, which affects the cooling effect. Therefore, the width of the blade 220 is 1 / 10-1 of the length of the slit 121, for example, 1 / 10, 1 / 8, 1 / 6, 1 / 3 of the length of the slit 121, or equal to the length of the slit 121.

[0050] The width of the blade 220 is distributed along the axial direction of the rotation shaft 210, and the axial length of the rotation of the rotation shaft 210 is greater than the width of the blade 220, so as to avoid the blade 220 from contacting the extension wall 140 and affecting the rotation. The axial length of the rotation of the rotation shaft 210 can refer to the length excluding the part embedded in the extension wall 140 for fixed connection with the extension wall 140, and can also be understood as the length of the rotating sleeve.

[0051] The width of the blade 220 can be 1 / 3-8 / 9 of the axial length of the rotation of the rotation shaft 210, for example, 1 / 3, 5 / 9, and 8 / 9.

[0052] In some other examples, a plurality of blades 220 can also be arranged in sequence along the axial direction of the rotation shaft 210, and the total width of the plurality of blades 220 can be 1 / 3-8 / 9 of the axial length of the rotation of the rotation shaft 210, for example, 1 / 3, 5 / 9, and 8 / 9.

[0053] In an embodiment, the number of blades 220 is 4-8. The number of blades 220 can be the number of blades 220 distributed along the radial direction, or the number of blades 220 of a single impeller. If the number of blades 220 is too large, the resistance of the blade 220 can be too large, which makes it difficult for the rotation shaft 210 to rotate. If the number of blades 220 is too small, the work effect is not enough, which affects the cooling of the compressed air. Therefore, the number of blades 220 is 4-8, for example, 4, 6, or 8.

[0054] In an embodiment, the bottom wall 120 is provided with an inclined and concave inclined surface 122 on the side away from the upper wall 110 and facing the slit 121, and the inclination angle of the inclined surface 122 is 20°-60°.

[0055] As Figure 1As shown, by setting the inclined slope 122 on the air outlet side of the bottom wall 120, the air blown out from the slit 121 can be inclined to blow out along the slope 122, avoiding the blades 220 on both sides of the rotating shaft 210 to reach force balance and hinder the rotation of the blades 220. The inclination angle of the slope 122 can be the inclination angle of the slope 122 relative to the vertical direction.

[0056] In an embodiment, the slit 121 is inclined from a first surface of the bottom wall 120 to a second surface of the bottom wall 120; the first surface and the second surface are two opposite surfaces; the inclination angle of the slit 121 is 20°-60°.

[0057] As above, in order to make the air blown out from the slit 121 inclined to blow out along the slope, avoiding the blades 220 on both sides of the rotating shaft 210 to reach force balance and hinder the rotation of the blades 220. In this embodiment, the inclined setting of the slit 121 avoids hindering the rotation of the blades 220, so there is no need to set a slope on the second surface.

[0058] In an embodiment, it further includes an electronic device unit, which includes one or more of an indicator light, an alarm light and a temperature sensor; the kinetic energy of the rotation of the blades 220 generates electric energy to power the electronic device unit. The rotation of the blades 220 drives the rotating shaft 210, and the rotating shaft 210 is electrically connected with a power generation device, so that the rotation of the blades 220 can generate electric energy. The electric energy generated by the rotation of the blades 220 powers the electronic device unit, realizing energy closed loop, without external power supply.

[0059] The indicator light can be used to indicate the rotation condition of the blades 220, for example, the indicator light is on when the blades 220 rotate, otherwise it is off.

[0060] The alarm light can be at the accommodation cavity or the slit 121, and send an alarm signal to prompt the maintenance personnel to repair when the measured gas temperature is abnormal.

[0061] The temperature sensor can be used to test the gas temperature at the accommodation cavity or the slit 121.

[0062] In an embodiment, the cooling device further includes a support frame and an air supply pipeline 300.

[0063] The support frame is fixedly connected with the air outlet unit; preferably, it is fixedly connected with the upper wall 110 of the air outlet unit to support the shell.

[0064] The air supply pipeline 300 is in communication with and fixedly connected with the opening 111, and the air supply pipeline 300 is in communication with a compressed air source. The air supply pipeline 300 inputs compressed air towards the air inlet, so that the cooling device operates to cool the target object.

[0065] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0066] For ease of description, directional terms such as "front, back, up, down, left, right," "horizontal, vertical, horizontal," and "top, bottom" generally indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the components themselves. For example, if a device in the drawings is inverted, a device described as "above" or "on top of" other devices or structures will subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0067] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0068] Unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0069] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0070] It should also be noted that the terms "one embodiment," "another embodiment," or "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this application.

[0071] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0072] It should also be noted that the above are merely preferred embodiments of this application and do not limit the scope of patent protection of this application. Any equivalent structural or procedural changes made using the content of this application’s specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A cooling device, characterized in that, include: An air outlet unit, the air outlet unit comprising a housing formed by a closed connection of an upper wall, a bottom wall and a side wall; A receiving cavity is formed between the upper wall, the bottom wall, and the side wall. The upper wall has an opening that forms an air inlet, which communicates with the receiving cavity. The bottom wall has multiple slits that penetrate the bottom wall. The blade unit includes a rotating shaft and multiple blades, the multiple blades being fixedly connected to the rotating shaft and extending in the radial direction of the rotating shaft; the blade unit is disposed on the side of the bottom wall opposite to the upper wall, and air is blown from the slit to the blades, causing the blades to rotate.

2. The cooling device according to claim 1, characterized in that, The air outlet unit also includes an extension wall, which extends from the side wall toward the direction away from the upper wall and forms a cylindrical shape; an air outlet is formed at the end of the extension wall away from the side wall, and the air outlet is directed toward the target object to be cooled.

3. The cooling device according to claim 2, characterized in that, The rotating shaft is mounted on the extension wall.

4. The cooling device according to claim 1, characterized in that, The rotation direction of the shaft forms an angle of 65° to 110° with the extension direction of the slit.

5. The cooling device according to claim 4, characterized in that, The width of the blade is 1 / 10-1 of the length of the slit.

6. The cooling device according to claim 4, characterized in that, The number of blades is 4-8.

7. The cooling device according to claim 1, characterized in that, The bottom wall has an inclined surface that is recessed and tilted toward the slit on the side opposite to the upper wall, and the inclination angle of the inclined surface is 20°-60°.

8. The cooling device according to claim 1, characterized in that, The slit extends obliquely from the first surface of the bottom wall to the second surface of the bottom wall; the first surface and the second surface are two opposing surfaces; the angle of inclination of the slit is 20°-60°.

9. The cooling device according to any one of claims 1 to 8, characterized in that, It also includes an electronic device unit, which includes one or more of an indicator light, an alarm light, and a temperature sensor; the kinetic energy of the blade rotation generates electrical energy to power the electronic device unit.

10. The cooling device according to any one of claims 1 to 8, characterized in that, Also includes: The support frame is fixedly connected to the air outlet unit; An air supply duct is connected to and fixedly connected to the opening, and the air supply duct is connected to a compressed air source.