VPX6 blade air cooling heat dissipation structure

Abstract

The utility model discloses a VPX6 blade air -cooled heat radiation structure, including cold plate, carrier plate, back cover, daughter card and heat pipe, back cover be located below the cold plate, and carrier plate sets up in the intermediate position of cold plate and back cover, and the daughter card is connected in the top of carrier plate and sets up in one end of carrier plate, and the heat pipe has a plurality of and all sets up in the inside of cold plate, and every heat pipe is parallel with each other, the utility model discloses when using, the heat pipe will quickly conduct the heat of daughter card position to the position of heat dissipation tooth, and after then, the cold air blows on the heat dissipation tooth, will take away the heat on the heat dissipation tooth, to this quick cooling of daughter card is carried out.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology for airborne electronic equipment, specifically a VPX6 blade air-cooled heat dissipation structure. Background Technology

[0002] With the increasing information processing capabilities of airborne electronic equipment, the total power consumption and heat flux density of electronic modules and chassis are growing, making heat dissipation technology one of the key technologies affecting the reliability of airborne electronic equipment. The VPX6 blade structure refers to a structure conforming to the VITA46 / 48 standard. Its heat dissipation methods are mainly air cooling, conductive cooling, and liquid cooling. Its thickness is generally 25.4mm. For daughter cards on the carrier board, the height is sometimes quite high (reaching 13.3mm), and the power consumption is also very high. In existing air-cooling solutions, the heat dissipation fins face outwards. For modules with higher daughter cards, at an ambient temperature of 55℃, the heat dissipation fins cannot meet the heat dissipation requirements of the daughter card. Utility Model Content

[0003] The present invention aims to overcome the shortcomings of the existing air-cooling heat dissipation scheme, where the heat dissipation fins face outwards and, for modules with higher daughter cards, the heat dissipation fins cannot meet the heat dissipation requirements of the daughter card at an ambient temperature of 55°C.

[0004] A VPX6 blade air-cooled heat dissipation structure is proposed, comprising a cold plate, a carrier plate, a rear cover plate, a daughter clip, and heat pipes. The rear cover plate is located below the cold plate, the carrier plate is positioned between the cold plate and the rear cover plate, the daughter clip is connected above the carrier plate and positioned at one end of the carrier plate, and multiple heat pipes are arranged inside the cold plate, with each heat pipe parallel to the others. In this utility model's technical solution, when the carrier plate and the cold plate are connected together, the daughter card is located at one end of the cold plate, and the other end of the cold plate is provided with heat dissipation fins. The cold plate contains heat pipes made of thermally conductive material. Therefore, when the daughter card dissipates heat, the cold plate absorbs the heat emitted by the daughter card. Furthermore, the heat pipes inside the cold plate rapidly conduct heat from the end of the cold plate with the daughter card to the end with the heat dissipation fins. The heat dissipation fins then absorb the heat conducted by the heat pipes. Subsequently, when cold air blows onto the heat dissipation fins, it carries away the heat from the fins. The heat dissipation fins are located within the heat pipes... One end is connected to the cold plate, so the heat conducted by the heat pipe to one end of the heat dissipation fin is directly absorbed by the heat dissipation fin. The other end of the heat dissipation fin is not connected to the cold plate. In use, the end of the heat dissipation fin that is not connected to the cold plate is located at the top of the heat dissipation fin. Therefore, during heat dissipation, hot air will rise from the bottom of the heat dissipation fin and be discharged through the top of the heat dissipation fin, thereby accelerating the heat dissipation efficiency. This solves the problem mentioned in the technical background that in the existing air-cooled heat dissipation solution, the heat dissipation fin faces outward, and for modules with higher daughter cards, the heat dissipation fin cannot meet the heat dissipation requirements of the daughter card at an ambient temperature of 55℃.

[0005] In a preferred embodiment of the present invention, the carrier plate is provided with an inter-board connector located below the daughter card. The daughter card is connected to the carrier plate through the inter-board connector, which has good shock and impact resistance, can adapt to harsh working environments, and ensures connection stability.

[0006] In a preferred embodiment of the present invention, four air vents are provided at one end of the cold plate, so that the cold air can enter the air vents and come into contact with the heat dissipation teeth after being blown onto the cold plate.

[0007] In a preferred embodiment of the present invention, each air vent is provided with a set of heat dissipation teeth in a vertical direction. The heat dissipation teeth increase the contact area with the cold air and accelerate the heat dissipation efficiency of the cold plate.

[0008] In a preferred embodiment of the present invention, the heat dissipation teeth are oriented towards the inside of the module, thus addressing the heat dissipation requirements of the structure, which has a high sub-card height on the carrier board and also high power consumption.

[0009] In a preferred embodiment of the present invention, the height of the heat dissipation fins is 17mm, and the height of the daughter card is 13.3mm. This satisfies the heat dissipation performance requirements of the daughter card. In a preferred embodiment of the present invention, the heat dissipation teeth are located at one end of the heat pipe and connected to the cold plate, so that the heat on the cold plate can be directly transferred to the heat dissipation teeth.

[0010] In a preferred embodiment of the present invention, the heat pipe is made of a thermally conductive material. The heat pipe can be made of a material with high thermal conductivity (such as diamond or aluminum), so that the heat pipe can quickly conduct heat from the card position to the heat dissipation tooth position.

[0011] In a preferred embodiment of the present invention, the two ends of the heat pipe are respectively located at the sub-card and the heat dissipation teeth. When the sub-card is dissipating heat, the heat pipe can quickly conduct the heat of the sub-card to the heat dissipation teeth, and then dissipate heat from the sub-card quickly through the heat dissipation teeth, thereby avoiding heat accumulation.

[0012] The advantages of this utility model compared with the prior art are: When this invention is in use, the heat of the daughter card will accumulate in the area where the cold plate is located above the daughter card. Then, the heat pipe will quickly conduct the heat from the area where the cold plate is located above the daughter card to the area where the cold plate is located on the heat dissipation teeth. Subsequently, the heat dissipation teeth will quickly absorb the heat conducted by the heat pipe. After the cold air blows on the heat dissipation teeth, it can carry away the heat from the heat dissipation teeth, thereby quickly cooling down the daughter card. Attached Figure Description

[0013] Figure 1 This is an exploded schematic diagram of a VPX6 blade air-cooled heat dissipation structure; Figure 2This is a front view schematic diagram of a VPX6 blade air-cooled heat dissipation structure; Figure 3 A schematic diagram of a VPX6 blade air-cooled heat dissipation structure; Figure 4 This is a schematic diagram of the internal structure of the cold plate in a VPX6 blade air-cooled heat dissipation structure (the cold plate is a whole, with one part removed to show the internal structure). In the diagram: 1-Cold plate, 2-Carrier plate, 3-Rear cover plate, 4-Daughter card, 5-Heat pipe, 6-Inter-board connector, 7-Air outlet, 8-Heat dissipation fins. Detailed Implementation

[0014] The following will refer to the appendix in the embodiments of this utility model. Figure 1-4 The technical solutions in the embodiments of this utility model will be described in detail below.

[0015] like Figure 1-4 As shown, a VPX6 blade air-cooled heat dissipation structure includes a cold plate 1, a carrier plate 2, a rear cover plate 3, a daughter card 4, and a heat pipe 5. The cold plate 1 is located above the rear cover plate 3, the carrier plate 2 is located in the middle of the rear cover plate 3 and the cold plate 1, and the daughter card 4 is located above the carrier plate 2 and connected to one end of the carrier plate 2.

[0016] like Figure 1-4 As shown, there are multiple sets of heat pipes 5, all of which are located inside the cold plate 1. One end of the cold plate 1 has four air vents 7, and each air vent 7 has a set of heat dissipation teeth 8 vertically arranged inside. The heat dissipation teeth 8 are connected to the cold plate 1, and the direction of the heat dissipation teeth 8 is towards the inside of the module.

[0017] like Figure 1-4 As shown, when the heat is dissipated, the heat on the daughter card 4 is concentrated on the heat dissipation teeth 8 when the cold plate 1 dissipates heat. Then the air blows on the vertically arranged heat dissipation teeth 8 to cool the heat dissipation teeth 8, and then the heat on the daughter card 4 and the heat dissipation teeth 8 is carried away through the heat dissipation teeth 8.

[0018] like Figure 1-4 As shown, the height of the heat dissipation teeth 8 in the air vent 7 is 17mm, which is the maximum distance from the top surface of the carrier plate 2 to the top of the cold plate 1, while the height of the daughter card 4 is only 13.3mm. Under these circumstances, the heat dissipation efficiency of the heat dissipation teeth 8 can meet the heat dissipation performance of the daughter card 4.

[0019] like Figure 1-4 As shown, the heat dissipation tooth 8 is located at one end of the heat pipe 5 and connected to the cold plate 1, so the heat on the cold plate 1 can be directly conducted to the heat dissipation tooth 8. The other end of the heat dissipation tooth 8 is not connected to the cold plate 1. In use, the end of the heat dissipation tooth 8 that is not connected to the cold plate 1 is located at the upper end of the heat dissipation tooth 8.

[0020] like Figure 1-4As shown, during heat dissipation, hot air will rise from the bottom of the heat dissipation tooth 8 and be discharged through the top of the heat dissipation tooth 8, thereby accelerating the heat dissipation efficiency. The sub-card 4 is provided with an inter-board connector 6 below it, and the carrier board 2 has a groove at the position of the inter-board connector 6.

[0021] like Figure 1-4 As shown, the board connector 6 is connected in the preset groove of the carrier board 2, and the sub-card 4 is located above the board connector 6 (the board connector 6 used is an existing product, so it will not be described in detail), and the sub-card 4 is connected to the carrier board 2 through the board connector 6.

[0022] like Figure 1-4 As shown, when connecting the cold plate 1, the carrier plate 2 and the rear cover plate 3, the cold plate 1 and the rear cover plate 3 are fastened to the carrier plate 2 with screws. After the cold plate 1 is connected to the carrier plate 2, the sub-card 4 will come into contact with the cold plate 1. Therefore, the heat generated by the sub-card 4 during operation will be conducted into the interior of the cold plate 1.

[0023] like Figure 1-4 As shown, the interior of the cold plate 1 is provided with multiple heat pipes 5. The heat pipes 5 are arranged inside the cold plate 1 along the length direction of the cold plate 1, and each heat pipe 5 is parallel to each other. The heat pipes 5 are made of materials with good thermal conductivity (such as diamond or aluminum).

[0024] like Figure 1-4 As shown, after the cold plate 1 is fastened to the carrier plate 2, the heat on the daughter card 4 will be transferred to the cold plate 1. Since the daughter card 4 is located at one end of the cold plate 1, the heat generated when the daughter card 4 is working will first occupy one end of the cold plate 1.

[0025] like Figure 1-4 As shown, the heat pipe 5 then conducts the heat generated by the daughter card 4 from one end of the cold plate 1 to the other end of the cold plate 1. That is, the heat pipe 5 conducts the heat on the cold plate 1 from the end corresponding to the daughter card 4 to the end with the heat dissipation teeth 8, and then the heat dissipation teeth 8 absorb the heat conducted by the heat pipe 5.

[0026] like Figure 1-4 As shown, when cold air blows onto the heat dissipation fins 8, the cold air will carry away the heat from the heat dissipation fins 8, thereby quickly cooling down the daughter card 4.

[0027] The movement process in this embodiment is as follows: After the back cover plate 3 and the cold plate 1 are fastened to the carrier plate 2 with screws, when the daughter card 4 dissipates heat, the heat of the daughter card 4 will be conducted to the cold plate 1. Then the heat pipe 5 will conduct the heat from the end of the cold plate 1 with the daughter card 4 to the end of the cold plate 1 with the heat dissipation teeth 8. Subsequently, the heat will be conducted to the heat dissipation teeth 8. After the cold air blows on the heat dissipation teeth 8, it can drive the heat on the heat dissipation teeth 8.

[0028] The above embodiments are only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the scope of protection of this utility model.

Claims

1. A VPX6 blade air-cooled heat dissipation structure, characterized in that: The utility model relates to a cold plate (1), a carrier plate (2), a back cover plate (3), a daughter card (4) and a heat pipe (5), the back cover plate (3) is located below the cold plate (1), the carrier plate (2) is arranged in the intermediate position of the cold plate (1) and the back cover plate (3), the daughter card (4) is connected above the carrier plate (2) and is arranged in one end of the carrier plate (2), the heat pipe (5) has a plurality and is all arranged in the inside of the cold plate (1), and each heat pipe (5) is parallel to each other.

2. The VPX6 blade air-cooled heat dissipation structure according to claim 1, characterized in that: The carrier plate (2) is provided with an interboard connector (6), and the interboard connector (6) is located below the daughter card (4), and the daughter card (4) is connected to the carrier plate (2) through the interboard connector (6).

3. The VPX6 blade air-cooled heat dissipation structure according to claim 1, characterized in that: One end of the cold plate (1) is provided with four air inlets (7).

4. The VPX6 blade air-cooled heat dissipation structure according to claim 3, characterized in that: Each air inlet (7) is vertically provided with a set of heat dissipation teeth (8) inside.

5. The VPX6 blade air-cooled heat dissipation structure according to claim 4, characterized in that: The heat dissipation teeth (8) are directed towards the inside of the module.

6. The VPX6 blade air-cooled heat dissipation structure according to claim 5, characterized in that: The height of the heat dissipation teeth (8) is 17mm.

7. The VPX6 blade air-cooled heat dissipation structure according to claim 6, characterized in that: The heat dissipation teeth (8) are connected to the cold plate (1) at one end of the heat pipe (5).

8. The VPX6 blade air-cooled heat dissipation structure according to claim 7, characterized in that: The heat pipe (5) is made of heat-conducting material.

9. The VPX6 blade air-cooled heat dissipation structure according to claim 8, characterized in that: The heat pipe (5) is arranged at the positions of the daughter card (4) and the heat dissipation teeth (8) at both ends.

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