A small heat dissipating device

Abstract

The utility model belongs to the field of electronic components heat dissipation relates to a small -size heat dissipation device. Including upper cover, upper casing, right side plate flow channel cover, lower casing, lower cover, left side plate flow channel cover and fin, satisfy the electronic component heat dissipation demand of multidimensional heteromorphic layout, has realized the one -time integral brazing of heat dissipation device simultaneously, and this structure welding technology is good, and the welding yield is high, and the manufacturing cost is low, can satisfy the batch production manufacturing requirement. Realize the sealing of internal electronic component, realize good electromagnetic shielding.

Description

Technical Field

[0001] This utility model belongs to the field of heat dissipation of electronic components, and relates to a small heat dissipation device. Background Technology

[0002] With the increasing integration and complexity of aerospace electronics, higher demands are being placed on heat dissipation devices for electronic equipment. For highly integrated, multi-dimensional, and non-planar heat-generating components, the traditional heat dissipation method involves placing the electronic components on top of cold plates and connecting multiple cold plates in series through pipes to meet their heat dissipation needs. This method is not only cumbersome, but also poses a risk of leakage due to the multiple cold plates connected in series, and increases manufacturing and maintenance costs, thus greatly limiting the mass production of such products. Utility Model Content

[0003] Utility Model Purpose This utility model provides a multi-faceted small heat dissipation device that is integrally brazed, which can meet the heat dissipation needs of electronic components with multi-dimensional and non-uniform layouts. At the same time, it realizes the one-time integral brazing of the heat dissipation device. The structure has good welding processability, high welding yield, and low manufacturing cost, which can meet the requirements of mass production.

[0004] Technical solution A small heat dissipation device includes an upper cover plate 1, an upper shell 2, a right side plate flow channel cover 3, a lower shell 4, a lower cover plate 5, a left side plate flow channel cover 6, and fins 7. The lower shell 4 has a slot A for mounting the fins 7 shown. The fins 7 include a first module heat dissipation fin, a second module heat dissipation fin, and a third module heat dissipation fin. The upper shell 2 and the lower shell 4 are welded together to form a liquid-cooled shell. The liquid-cooled shell has slots B on both its left and right sides. The liquid-cooled flow channels are formed by welding the right side plate flow channel cover 3 and the left side plate flow channel cover 6, respectively, to form a right-side flow channel and a left-side flow channel. The upper cover plate 1 and the lower cover plate 5 are respectively used to encapsulate the liquid-cooled housing. The front side wall of the liquid-cooled housing is provided with a liquid inlet, and the rear side wall is provided with a liquid outlet. The liquid flows into the heat dissipation fins of the first module through the liquid inlet, and after heat exchange with the first module, it enters the right flow channel to dissipate heat in the right side wall area of ​​the liquid-cooled housing. Then it returns from the side wall area of ​​the liquid-cooled housing to the heat dissipation fins of the second module, and after heat exchange with the second heat dissipation module, it enters the left flow channel to dissipate heat in the left side wall area of ​​the liquid-cooled housing. Then it enters the heat dissipation fins of the third module from the left flow channel to dissipate heat in the third module, and finally flows out from the liquid outlet.

[0005] Furthermore, the right-side flow channel and the left-side flow channel have the same structure and are arranged symmetrically.

[0006] Furthermore, the right-side flow channel and the left-side flow channel are specifically designed in a U-shape.

[0007] Furthermore, the overlap width of the right-side flow channel and the left-side flow channel is 3mm, and the depth is 2mm.

[0008] Furthermore, both the upper housing 2 and the lower housing 4 are provided with sealing grooves.

[0009] Furthermore, the sealing groove is 0.8 mm deep and 1.2 mm wide.

[0010] The beneficial effects of this application are as follows: This invention provides a multi-faceted miniature heat dissipation device with integral brazing, which can meet the heat dissipation needs of electronic components with multi-dimensional, non-planar layouts. It also achieves one-time integral brazing of the heat dissipation device, resulting in good weldability, high welding yield, and low manufacturing cost, thus meeting the requirements for mass production. Furthermore, it achieves sealing of the internal electronic components and provides excellent electromagnetic shielding. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the working fluid flow inside the heat dissipation device; Figure 3 This is a schematic diagram of the right side panel structure; Figure 4 This is a schematic diagram of the left side panel structure; Figure 5 This is a schematic diagram of the left side panel's inlet and outlet structure; Figure 6 This is a schematic diagram of the right-side cap structure; The icons are: 1-upper cover plate, 2-upper shell, 3-right side plate flow channel cover, 4-lower shell, 5-lower cover plate, 6-left side plate flow channel cover, 7-fin. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be described in more detail below with reference to the embodiments of this utility model. In the examples, the same or similar reference numerals denote the same or similar components or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this utility model. The embodiments described below with reference to the embodiments are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. The embodiments of this utility model will be described in detail below with reference to their specific implementation.

[0013] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a multi-faceted small heat dissipation device with integral brazing, characterized in that it comprises an upper cover plate 1, an upper shell 2, a right side plate flow channel cover 3, a lower shell 4, a lower cover plate 5, a left side plate cover 6, and fins 7.

[0014] like Figure 2 As shown, the liquid flows from the inlet into the right side region of the casing, then enters the right side plate, flows back through the serpentine flow channel on the right side plate, and then enters the right side region of the casing again. The liquid then flows back and forth through the middle region of the casing, converging in the upper left corner region and entering the serpentine flow channel on the left side plate. It then flows back from the left side plate to the lower left corner region of the casing, finally exiting from the outlet. This achieves multi-faceted heat dissipation on the left and right side plates and the middle region of the casing, thus meeting the heat dissipation requirements of heat-generating components with multi-dimensional, non-planar layouts.

[0015] The lower shell is equipped with flow channel fins, each 4mm high. The circumferential welding area of ​​the lower shell is no less than 6mm wide, and the width of the baffles is no less than 3mm, ensuring weld sealing. Depending on the heat load of the lower shell, its internal structure can be either a channel type or a plate-fin type. In this case, the intercooler plate has a large heat load, therefore a plate-fin type structure is designed. The fin pitch is 3.5mm, and the discrete length is 6mm.

[0016] The flow channels on the left and right side plates can be designed according to their heat load. Fins can also be arranged inside the flow channels. In this case, the left and right side plates are directly designed as serpentine flow channels. To ensure the brazing seal of the left and right side plates, the thickness of the flow channel caps is 2.5mm, which is 2mm greater than the brazing overlap depth of the flow channels. This design ensures that the left and right caps can be clamped by tooling during integral brazing. After welding, they are processed.

[0017] like Figure 5 As shown, before welding, the waist-shaped holes leading to the left and right side plates of the lower shell are machined in place, and the flow channels of the left and right side plates are also machined in place. Then, they are brazed together in one piece to form the shell. Finally, the welded shell is precision machined.

[0018] This heat dissipation device features sealing grooves on the end faces of the upper and lower housings, as well as in other rectangular openings. These grooves are 0.8mm deep and 1.2mm wide. After the upper and lower covers are assembled, they effectively seal the internal electronic components, achieving excellent electromagnetic shielding.

[0019] Example The upper shell 1 and lower shell 4 are rough-machined. The internal grooves of both shells are machined into a grid shape. Flow channels are machined on the other side of the lower shell 4, with a depth of 4mm, a fin pitch of 3.5mm, and a discrete length of 6mm. The welding span of the square area hollowed out in the shell is 6mm. The width of the baffle strip is 3mm. The waist-shaped holes on both sides of the lower shell leading to the left and right side plates are 10mm long and 4mm wide.

[0020] The left and right side panels are equipped with serpentine flow channels, each 6mm wide and 4mm deep. For example... Figure 5 As shown, the left side plate flow channel cover (6) and the right side plate flow channel cover (3) are welded to the housing flow channel to seal it. The overlap width is 3mm and the depth is 2mm. Depending on the heat sink requirements of the electronic components on the side plates, fins can be arranged inside the flow channels of the left and right side plates.

[0021] The upper shell 2, the right side plate flow channel cover 3, the lower shell 4, the left side plate flow channel cover 6, and the fins 7 are integrally brazed using flexible tooling. After brazing, the liquid-cooled shell is precision machined, including the shell's perimeter, interior, and sealing grooves.

[0022] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inner," and "outer," etc., used in this application description to indicate relative direction or positional relationship are used only to indicate relative orientation or positional relationship, and do not imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, and therefore should not be construed as a limitation on this application. The terms "first," "second," "third," and similar terms used in this application description are used only for descriptive purposes to distinguish different components, and should not be construed as indicating or implying relative importance. The terms "a," "one," or "the," etc., used in this application description should not be construed as an absolute limitation on quantity, but should be construed as indicating the existence of at least one. The terms "including," "comprising," etc., used in this application description mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0023] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, terms such as “installation,” “connection,” and “linkage” used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0024] The above description is merely a specific embodiment of this utility model and is not intended to limit this utility model. Within the spirit and principles of this utility model, any person skilled in the art may use the above-disclosed technical content to make changes or modifications to equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model, as well as any modifications, equivalent substitutions, improvements, etc., should be included within the protection scope of this utility model.

Claims

1. A small heat dissipation device, characterized in that, The system includes an upper cover plate, an upper shell, a right side plate flow channel cover, a lower shell, a lower cover plate, a left side plate flow channel cover, and fins. The lower shell has a slot A for mounting the fins shown. The fins include a first module heat dissipation fin, a second module heat dissipation fin, and a third module heat dissipation fin. The upper shell and lower shell are welded together to form a liquid-cooled shell. The liquid-cooled shell has slots B on both sides. The liquid-cooled flow channels are formed by welding the right side plate flow channel cover and the left side plate flow channel cover, respectively, to form a right-side flow channel and a left-side flow channel. The upper cover plate and lower cover plate are... The liquid cooling housing is used for encapsulation. The front side wall of the liquid cooling housing has a liquid inlet, and the rear side wall has a liquid outlet. The liquid flows into the heat dissipation fins of the first module through the liquid inlet, exchanges heat with the first module, and then enters the right flow channel to dissipate heat in the right side wall area of ​​the liquid cooling housing. It then returns from the side wall area of ​​the liquid cooling housing to the heat dissipation fins of the second module, exchanges heat with the second heat dissipation module, and then enters the left flow channel to dissipate heat in the left side wall area of ​​the liquid cooling housing. It then enters the heat dissipation fins of the third module from the left flow channel to dissipate heat in the third module, and finally flows out from the liquid outlet.

2. The apparatus as claimed in claim 1, characterized in that, The right-side flow channel and the left-side flow channel have the same structure and are arranged symmetrically.

3. The apparatus as described in claim 1, characterized in that, The right-side and left-side flow channels are specifically designed in a U-shape.

4. The apparatus as claimed in claim 1, characterized in that, The overlap width of the right-side flow channel and the left-side flow channel is 3mm, and the depth is 2mm.

5. The apparatus as claimed in claim 1, characterized in that, Both the upper and lower shells are provided with sealing grooves.

6. The apparatus as claimed in claim 5, characterized in that, The sealing groove is 0.8 mm deep and 1.2 mm wide.

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