A cooling structure and design method

Abstract

The application provides a cooling structure and a design method, which comprise a square conical tower structure, a heat spreading plate structure and a heat conducting belt, one end of the heat conducting belt is connected with a heat source, and the other end is connected with the heat spreading plate; the upper surface of the heat spreading plate structure is connected with the heat conducting belt, and the lower surface is provided with n square conical tower mounting seats, the square conical tower mounting seats are used for mounting the square conical tower structure, and the square conical tower structure is connected with a structure needing to be cooled. Through the heat conducting belt, the pressing plate, the heat spreading plate, the square conical tower structure, the cold energy of one end of the heat conducting belt can be uniformly transmitted to a super-large black body surface, the black body temperature field uniformity is maintained, and the point-to-surface cooling (heating) design is realized.

Description

Technical Field

[0001] This invention belongs to the field of cooling technology, specifically relating to a cooling structure and design method. Background Technology

[0002] With the development of infrared technology in China's military industry, infrared thermal imaging, infrared remote sensing detectors, and other equipment have been widely used in weaponry, playing a crucial role in infrared search, infrared reconnaissance, and infrared guidance. As a key component for infrared equipment calibration, blackbody technology is also rapidly developing, and the market for blackbody applications has been steadily expanding in recent years.

[0003] A blackbody is a standard radiation source that produces standard radiation at a specific temperature. Blackbodies can be classified into point-source blackbodies and surface-source blackbodies according to their structural type. Point-source blackbodies typically employ a multi-reflection chamber structure; multiple reflections result in high absorptivity, and they are primarily used for calibrating infrared point-source measuring devices such as infrared ear thermometers and infrared thermometers. In contrast, surface-source blackbodies are blackbodies with extremely high surface emissivity and uniform temperature, primarily used for calibrating infrared equipment such as infrared thermal imagers. The quality of technical indicators such as temperature uniformity of surface-source blackbodies significantly impacts the performance of infrared equipment. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a cooling structure and design method. The solution of this invention can solve the problems existing in the prior art.

[0005] The technical solution of this invention:

[0006] According to a first aspect, a cooling structure is provided, including a square conical tower structure, a heat spreader structure, and a heat conduction tape. One end of the heat conduction tape is connected to a cold source, and the other end is connected to the heat spreader. The upper surface of the heat spreader structure is connected to the heat conduction tape, and the lower surface is provided with n square conical tower mounting seats. The square conical tower mounting seats are used to install the square conical tower structure, and the square conical tower structure is connected to the structure that needs to be cooled.

[0007] Furthermore, the shape of the upper surface of the heat spreader plate is symmetrical about the center with respect to the structure to be cooled.

[0008] Preferably, a heat-cutting groove is provided at the right-angle turning position of the heat spreader, and the heat-cutting groove extends into the interior of the heat spreader.

[0009] Furthermore, the number of the square pyramidal tower structures is n = 2. m There are , where m is a natural number that is not equal to zero.

[0010] Furthermore, the square cone tower structure is a tetrahedral cone with side grooves on its sides, a central groove on the lower surface that contacts the structure to be cooled, and a heat spreader mounting hole on the upper part that connects to the heat spreader. Holes for connecting to the structure to be cooled are also provided on the edges of the tetrahedron.

[0011] Furthermore, the cooling structure also includes a pressure plate, which is installed at a reserved position on the upper surface of the heat spreader plate, and the pressure plate tightly connects the heat conduction tape to the heat spreader plate.

[0012] Preferably, the pressure plate tightly connects the heat transfer tape to the heat spreader by pre-pressurizing and filling with a heat-conducting solid.

[0013] Furthermore, the cooling structure also includes a heat-spreading film, which is a thin film with low thermal conductivity perpendicular to the film surface and high thermal conductivity parallel to the film surface. The heat-spreading film is placed between the heat-spreading plate and the square conical tower structure and between the square conical tower structure and the structure to be cooled.

[0014] According to the second aspect, a cooling structure design method as described above is provided, comprising the following steps:

[0015] The number and size of the square conical tower structures are determined based on the size of the structure to be cooled;

[0016] The shape and size of the heat spreader are determined based on the number and size of the square conical tower structure;

[0017] Determine the position and size of the pressure plate based on the shape and size of the heat spreader.

[0018] Design the dimensions of the pressure plate according to its location and size;

[0019] The size of the heat exchange film is determined based on the shape of the structure to be cooled and the shape of the heat exchange plate.

[0020] The length of the heat transfer cable is determined based on the location of the cold source and the pressure plate.

[0021] Furthermore, the materials of the heat-conducting tape, the square cone tower, the heat-spreading plate, and the heat-spreading film are determined according to the required thermal conductivity.

[0022] The beneficial effects of this invention compared to the prior art are as follows:

[0023] This invention uses a heat-conducting tape to transfer cold energy from a distant location to a heat spreader structure. A pressure plate structure tightly connects the heat-conducting tape to the heat spreader structure. The heat spreader uniformly transfers the point-source cold energy or the cold energy on a small surface of the heat-conducting tape to each square conical tower structure. The square conical tower structures further uniformly transfer the cold energy transferred from the heat spreader to the surface of the blackbody structure. Through the aforementioned heat-conducting tape, pressure plate, heat spreader, and square conical tower structure, the cold energy at one end of the heat-conducting tape can be uniformly transferred to the surface of the ultra-large blackbody, maintaining the uniformity of the blackbody temperature field and achieving a point-to-surface cooling (heating) design. Attached Figure Description

[0024] The accompanying drawings, which form part of this specification, are provided to further illustrate embodiments of the invention and, together with the textual description, explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0025] Figure 1 The front view and top view of the cooling structure provided according to an embodiment of the present invention are shown;

[0026] Figure 2 The front view, top view, and side view of the heat spreader structure provided according to an embodiment of the present invention are shown.

[0027] Figure 3 The front view, top view, side view, and sectional view of the square pyramidal tower provided according to an embodiment of the present invention are shown.

[0028] The meanings of the labels in the attached diagram are as follows:

[0029] 1. Heat transfer tape; 2. Pressure plate; 3. Heat spreader structure; 4. Square conical tower structure; 5. Heat spreader film; 6. Structure requiring cooling; 7. Cold source; 8. Temperature cut-off groove; 9. Heat transfer tape mounting base; 10. Square conical tower mounting base; 11. Side groove; 12. Center groove; 13. Heat spreader mounting hole; 14. Structure requiring cooling mounting hole. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] 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.

[0032] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. 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 figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0033] like Figure 1 As shown, according to an embodiment of the present invention, a cooling structure is provided according to a first aspect, including a square conical tower structure 4, a heat spreader structure 3, and a heat conduction plate 1. One end of the heat conduction plate 1 is connected to a cold source 7, and the other end is connected to the heat spreader. The upper surface of the heat spreader structure 3 is connected to the heat conduction plate 1, and n square conical tower mounting seats 10 are provided on the lower surface. The square conical tower mounting seats 10 are used to install the square conical tower structure 4, and the square conical tower structure 4 is connected to the structure that needs to be cooled.

[0034] In a further embodiment, the heat-conducting tape 1 is a flexible braided copper wire, characterized by good flexibility and ease of changing its structural orientation, making it suitable for structural connections at different locations. In another embodiment, the heat-conducting tape 1 can also be a multi-strand heat pipe, which provides even better heat transfer performance.

[0035] In another embodiment, the shape of the upper surface of the heat spreader plate is symmetrical about the center with respect to the structure 6 to be cooled. Through the design of the shape of the heat spreader plate, the heat dissipation of the structure 6 to be cooled can be more uniform.

[0036] In a preferred embodiment, a heat-cutting groove is provided at the right-angle turning position of the heat spreader, extending into the interior of the heat spreader. This heat-cutting groove design improves the uniformity of the temperature field within the heat spreader structure 3.

[0037] In a further embodiment, the heat spreader is made of a metal material with high thermal conductivity, preferably aluminum alloy or copper.

[0038] In one further embodiment, the number of square pyramidal tower structures is n=2. m There are , where m is a non-zero natural number. By setting this number, the centrally symmetrical arrangement of the square pyramidal tower structure is achieved, improving the uniformity of heat dissipation from the structure 6 that needs cooling.

[0039] In a further embodiment, the square conical tower structure 4 is a tetrahedral cone with side grooves on its sides, a central groove 12 on the lower surface that contacts the structure 6 to be cooled, and heat spreader mounting holes 13 on the upper part that connect to the heat spreader. Mounting holes 14 for the structure to be cooled are also provided on the edges of the tetrahedron. The design of the side grooves and the central groove 12 increases the heat dissipation area, accelerates the heat dissipation speed, improves temperature uniformity, and reduces structural weight.

[0040] In a further embodiment, the square conical tower structure is made of a metal material with high thermal conductivity, preferably aluminum alloy or copper.

[0041] In a further embodiment, the cooling structure also includes a pressure plate 2, which is installed at a reserved position on the upper surface of the heat exchange plate. The pressure plate 2 tightly connects the heat transfer cable 1 to the heat exchange plate. Preferably, the pressure plate 2 is located at the center of the heat exchange plate, thereby ensuring that the heat of the heat transfer cable 1 can be uniformly transferred in the heat exchange plate.

[0042] In a preferred embodiment, the pressure plate 2 tightly connects the heat transfer tape 1 to the heat spreader plate by pre-pressurizing and filling with thermally conductive solid, thereby reducing the connection thermal resistance.

[0043] In a further embodiment, the cooling structure also includes a heat-spreading film 5, which is a thin film with low thermal conductivity perpendicular to the film surface and high thermal conductivity parallel to the film surface. The heat-spreading film 5 is placed between the heat-spreading plate and the square conical tower structure, and between the square conical tower structure and the structure to be cooled, to improve the uniformity of the in-plane temperature field. Preferably, the heat-spreading film 5 is made of high thermal conductivity carbon fiber.

[0044] According to the second embodiment, a cooling structure design method as described above is provided, comprising the following steps:

[0045] Step 1: Determine the number and dimensions of the square conical tower structures 4 based on the size of the structure to be cooled;

[0046] In one embodiment, the number of square pyramidal tower structures is n = 2. m The number of square pyramidal tower structures is determined by the number of structures to be cooled, where m is a non-zero natural number. Once the number of square pyramidal tower structures is determined, the dimensions of the square pyramidal tower structures can be determined based on the size of the structure to be cooled.

[0047] Step 2: Determine the shape and size of the heat spreader based on the number and size of the square conical tower structure 4;

[0048] In one embodiment, the shape of the upper surface of the heat spreader plate is symmetrical about the center with respect to the structure to be cooled, and the size of the upper surface of the heat spreader plate is determined according to the number and size of the square conical tower structure 4, and the size of the mounting base of the square conical tower structure 4 on the lower surface of the heat spreader plate is determined according to the size of the upper part of the square conical tower structure.

[0049] Step 3: Determine the position and size of the installation pressure plate 2 based on the shape and size of the heat spreader.

[0050] In one embodiment, the pressure plate 2 is installed at the center of the heat spreader, and the position and size of the pressure plate 2 are determined according to the shape and size of the center of the heat spreader.

[0051] Step 4: Design the dimensions of the pressure plate 2 according to its position and size;

[0052] Step 5: Determine the size of the heat exchange film 5 based on the shape of the structure to be cooled and the shape of the heat exchange plate;

[0053] Step 6: Determine the length of the heat transfer cable 1 based on the position of the cold source and the pressure plate 2.

[0054] In a further embodiment, the materials of the heat transfer tape 1, the square cone tower, the heat spreader, and the heat spreader film 5 are determined according to the required thermal conductivity.

[0055] To better illustrate the present invention, the following description is provided in conjunction with the accompanying drawings and specific embodiments.

[0056] Figure 1 This is a schematic diagram of a cooling structure application, including a heat-conducting tape 1, a pressure plate 2, a heat spreader plate, a heat spreader film 5, and a square conical tower structure 4. One end of the heat-conducting tape 1 is connected to the cold source, and the other end is connected to the heat spreader plate. In this embodiment, the heat-conducting tape is a flexible braided copper wire.

[0057] The pressure plate 2 tightly connects the heat transfer tape 1 and the heat spreader structure 3 by pre-pressurizing and filling with heat-conducting solids, thereby reducing the connection thermal resistance.

[0058] The heat-spreading film 5 placed between the square conical tower and the blackbody cooling surface, and between the square conical tower and the heat spreader, is made of high thermal conductivity carbon fiber. Its thermal conductivity is directional, with a lower thermal conductivity perpendicular to the film surface and an extremely high thermal conductivity parallel to the film surface, thereby improving the uniformity of the in-plane temperature field.

[0059] Through the heat conduction tape 1, pressure plate 2, heat spreader plate, heat spreader film 5, square conical tower structure 4, and heat spreader film 5, the cold energy at the cold source end can be evenly transferred to the surface of the super-large blackbody or other planes that need to be cooled.

[0060] Figure 2 This is a schematic diagram of the heat spreader structure 3, which includes a main structure, a square conical tower mounting base 10, a heat conduction mounting base 9, and a temperature cutoff groove 8. In this embodiment, the main structure of the heat spreader is made of aluminum alloy or copper material with high thermal conductivity, and the cross-sectional area of ​​the main structure of the heat spreader is square.

[0061] The square conical tower mounting base 10 of the heat spreader is used to install the square conical tower. In this embodiment, the number of mounting bases is 16.

[0062] The temperature cut-off groove 8 is located at the right-angle turning position of the heat spreader plate and is used to improve the temperature field uniformity inside the heat spreader plate structure 3.

[0063] In this embodiment, the square heat-conducting heating plate mounting base 9 is used to install the heat-conducting heating plate 1, and the number of mounting bases is 1.

[0064] Figure 3 This is a schematic diagram of a square conical tower structure 4, which mainly includes the main structure, side grooves 11, central grooves 12, blackbody mounting holes and heat spreader mounting holes 13.

[0065] In this embodiment, the main structure of the square cone tower is a tetrahedral cone, which is made of aluminum alloy or copper material with high thermal conductivity.

[0066] The side slots 11 and central slots 12 of the square conical tower are distributed as follows: Figure 3 As shown, it is mainly used to improve the uniformity of the temperature field and reduce the weight of the structure.

[0067] The cooling structure provided by this invention can be applied not only to heat dissipation mechanisms but also to heating mechanisms, simply by increasing the temperature of the cold source.

[0068] In summary, the cooling structure and design method provided by this invention have at least the following advantages compared to the prior art:

[0069] This invention uses a heat-conducting tape to transfer cold energy from a distant location to a heat spreader structure. A pressure plate structure tightly connects the heat-conducting tape to the heat spreader structure. The heat spreader uniformly transfers the point-source cold energy or the cold energy on a small surface of the heat-conducting tape to each square conical tower structure. The square conical tower structures further uniformly transfer the cold energy transferred from the heat spreader to the surface of the blackbody structure. Through the aforementioned heat-conducting tape, pressure plate, heat spreader, and square conical tower structure, the cold energy at one end of the heat-conducting tape can be uniformly transferred to the surface of the ultra-large blackbody, maintaining the uniformity of the blackbody temperature field and achieving a point-to-surface cooling (heating) design.

[0070] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would 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 will be interpreted accordingly.

[0071] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0072] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A cooling structure characterized by, The system includes a square conical tower structure, a heat spreader structure, and a heat conduction tape. One end of the heat conduction tape is connected to a cold source, and the other end is connected to the heat spreader. The upper surface of the heat spreader structure is connected to the heat conduction tape, and the lower surface is provided with n square conical tower mounting seats. The shape of the upper surface of the heat spreader is symmetrical about the center with respect to the structure to be cooled. The square conical tower mounting seats are used to install the square conical tower structure, and the square conical tower structure is connected to the structure to be cooled. The number of the square conical tower structures is n wherein m is a natural number not equal to zero; The cooling structure also includes a heat-spreading film, which is a thin film with low thermal conductivity perpendicular to the film surface and high thermal conductivity parallel to the film surface. The heat-spreading film is placed between the heat-spreading plate and the square conical tower structure and between the square conical tower structure and the structure to be cooled.

2. A cooling structure according to claim 1, wherein A heat-cutting groove is provided at the right-angle turning position of the heat spreader, and the heat-cutting groove extends into the interior of the heat spreader.

3. A cooling structure according to claim 2, wherein The square cone tower structure is a tetrahedral cone with side grooves on its sides, a central groove on the lower surface that contacts the structure to be cooled, and a heat spreader mounting hole on the upper part that connects to the heat spreader. Holes for connecting to the structure to be cooled are also provided on the edges of the tetrahedron.

4. A cooling structure according to claim 3, wherein The cooling structure also includes a pressure plate, which is installed at a reserved position on the upper surface of the heat exchange plate, and the pressure plate tightly connects the heat conduction tape to the heat exchange plate.

5. A method of designing a cooling structure according to any one of claims 1 to 4, wherein The method includes the following steps: The number and size of the square conical tower structures are determined based on the size of the structure to be cooled; The shape and size of the heat spreader are determined based on the number and size of the square conical tower structure; Determine the position and size of the pressure plate based on the shape and size of the heat spreader. Design the dimensions of the pressure plate according to its location and size; The size of the heat exchange film is determined based on the shape of the structure to be cooled and the shape of the heat exchange plate. The length of the heat transfer cable is determined based on the location of the cold source and the pressure plate.

6. The method of designing a cooling structure according to claim 5, wherein The materials of the heat-conducting tape, the square conical tower, the heat-spreading plate, and the heat-spreading film are determined according to the required thermal conductivity.

Images