Jet flow impact heat dissipation device and heat dissipation device of heating device

Abstract

The invention belongs to the technical field of jet flow heat dissipation, and particularly relates to a jet flow impact heat dissipation device and a heat dissipation device of a heating device, the jet flow impact heat dissipation device comprises an upper cover, a jet flow plate and an impacted plate, a space is formed between the upper cover and the impacted plate, and the jet flow plate is arranged in the space; a liquid inlet is formed in the upper cover; a plurality of jet flow holes are formed in the jet flow plate; the impacted plate is polygonal and has heat conductivity, a jet flow cavity is formed between the impacted plate and the jet flow plate, the side, away from the jet flow plate, of the impacted plate is used for arranging a heating device, and liquid outlets are formed in the sides, corresponding to the jet flow plate, of the jet flow cavity respectively; all parts are tightly combined, the structure is exquisite, the space utilization rate is high, meanwhile, the liquid outlets are formed in the periphery of the device, the secondary heating devices are arranged on the periphery of the device, the device can dissipate heat of the secondary heating devices while dissipating heat of jet flow in the main heating period, and the production cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of jet heat dissipation, and particularly relates to a jet impingement heat dissipation device and a heat dissipation method for heat generating devices. Background Art

[0002] With the development of electronic devices towards high integration and high power density, the heat dissipation problem has become a key bottleneck restricting their performance improvement. Traditional heat dissipation technologies such as air cooling and liquid cooling are difficult to meet the requirements of high heat flux density scenarios, while jet impingement heat dissipation technology has become an effective means to solve this problem due to its high heat transfer ability and compact structure.

[0003] Existing jet impingement heat dissipation mainly includes various technical paths such as single-phase jet, two-phase jet, and synthetic jet heat dissipation technologies. However, traditional heat dissipation means have problems such as uneven jet distribution and obvious boundary effects, that is, the jet impingement intensity in the edge region of the heat generating surface is weaker than that in the central region, resulting in boundary heat dissipation blind spots, which affect the overall heat dissipation effect and device stability. The present invention provides a jet impingement heat sink, aiming to solve the problems existing in the above-mentioned prior art through jet and flow channel design. Summary of the Invention

[0004] The present invention aims to overcome at least one defect of the above-mentioned prior art, and provides a jet impingement heat dissipation device and a heat dissipation device for heat generating devices, which can achieve the technical effect of dissipating heat from the main heat generating devices and taking into account the heat dissipation of secondary heat generating devices.

[0005] One object of the present invention is to provide a jet impingement heat dissipation device, including an upper cover, a jet plate, and an impinged plate. A space is formed between the upper cover and the impinged plate, and the jet plate is disposed in the space; the upper cover is provided with a liquid inlet; the jet plate is provided with a plurality of jet holes; the impinged plate is configured as a polygon and has thermal conductivity. A jet cavity is formed between the impinged plate and the jet plate, and the side of the impinged plate facing away from the jet plate is used to dispose a heat generating device. Liquid outlets are respectively provided at the sides of the jet cavity corresponding to the respective sides of the jet plate.

[0006] A space is formed between the upper cover and the impinged plate. The jet plate is located below the upper cover and a jet cavity is formed between the jet plate and the lower impinged plate. The coolant enters from the liquid inlet of the upper cover, flows through the jet plate disposed below the upper cover, and then flows into the lower jet cavity through the jet holes on the jet plate. The heat generating device is disposed on the side of the impinged plate facing away from the jet plate. The heat generated by the heat generating device is transferred to the thermally conductive impinged plate. The coolant flows through the impinged plate to take away the heat and flows out from the surrounding liquid outlets, completing the heat dissipation of the heat generating device. The coolant flowing out from the liquid outlets on the four sides of the jet cavity can simultaneously take away the heat of the remaining heat generating devices disposed around the heat generating device, thereby achieving the technical effect of dissipating heat from the main heat generating devices and taking into account the heat dissipation of secondary heat generating devices.

[0007] Furthermore, the impact plate is provided with a fixing structure, and the fixing structure is provided with a fixing component for fixing the heating device.

[0008] A fixing component is arranged on the impact plate to fix the heating device to prevent the heating device from falling off.

[0009] Furthermore, the liquid outlets are respectively arranged at the middle of the four sides of the impact plate, and a plurality of columns are arranged extending from the liquid outlet into the jet cavity, and drainage grooves are formed between the plurality of columns.

[0010] A drainage groove is set at the liquid outlet to optimize the coolant flow path. In addition, the drainage groove allows the coolant to cover a larger heat exchange surface, increase heat exchange efficiency, and avoid local overheating.

[0011] Furthermore, a connecting portion and a connecting device are respectively provided between the fixing structure and the drainage groove, the connecting device is arranged on the connecting portion, and the impact plate is connected to the upper cover via the connecting device.

[0012] A connecting portion is arranged on the impact plate, and the upper cover and the impact plate are connected by a connecting device, thereby ensuring the stability of the device and preventing the upper cover from being displaced due to the flow of the coolant.

[0013] Furthermore, the impact plate is connected to the upper cover by means of a screw.

[0014] Furthermore, a plurality of the fixed structures, a plurality of the connecting parts and a plurality of the drainage grooves are combined to form the jet cavity between the impact plate and the jet plate, the area of ​​the jet plate is larger than the area of ​​the jet cavity, and the jet plate is arranged on the fixed structures, the connecting parts and the drainage grooves.

[0015] The various components on the impact plate are tightly connected and have a delicate structure. The jet cavity can be formed by directly placing the jet plate on the fixed structure, the connecting part and the guide column, and the installation is simple.

[0016] Furthermore, the fixing structure, the connecting portion and the surface of the column in contact with the jet plate are all located at the same height.

[0017] When the fixing structure, the connecting part and the upper surface of the column are at the same height, the jet plate can be placed directly on these components, while also preventing the uneven heights of the components from causing the jet cavity to have a gap, resulting in coolant leakage.

[0018] Furthermore, the position of the upper cover relative to the fixing structure is set as a hollow structure.

[0019] The upper cover is adjusted to fit the shape of the impact plate, leaving space for the fixing components.

[0020] Further, the liquid inlet is arranged in the middle of the upper cover, the jet holes are densely distributed in the middle of the jet plate and are dispersedly distributed around, and fins are arranged in the middle of the surface of the impact plate close to the jet plate.

[0021] The coolant enters from the liquid inlet in the middle of the upper cover, then flows into the jet cavity from the jet holes in the middle of the jet plate, and flows through the fins arranged in the middle of the jet cavity. The whole process of the coolant flow is vertical, reducing the flow path of the coolant, and can ensure the heat dissipation efficiency of the coolant to the greatest extent. At the same time, the fins are arranged to diffuse the heat absorbed by the impact plate, make full contact with the coolant, and increase the heat dissipation efficiency.

[0022] The second object of the present invention is to provide a heat dissipation device for a heating device, including a support plate, a plurality of heating devices and the jet impact heat dissipation device; the plurality of heating devices include a main heating device and a plurality of secondary heating devices arranged on the support plate. The impact plate on the jet impact heat dissipation device is arranged in a fitting manner with the main heating device, one or more of the secondary heating devices are correspondingly arranged at each liquid outlet of the jet impact heat dissipation device, and a recovery device is arranged on the support plate to recover the coolant cooled by each secondary heating device.

[0023] A plurality of heating devices are arranged on the support plate, the main heating device is arranged in the middle, the secondary heating devices are arranged around the main heating device, and the jet impact heat dissipation device is arranged on the main heating device to dissipate heat from the main heating device. When the coolant flows out from each liquid outlet arranged in the jet cavity, it can flow through the secondary heating devices and take away the heat, so as to achieve the technical effect of dissipating heat from the main heating device and taking into account the heat dissipation of the secondary heating devices. Finally, the coolant flows into the recovery device below the support plate.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. Each component of the jet impact heat dissipation device of the present invention is closely combined, with a delicate structure, high space utilization rate, and a simple installation method between the upper cover, the jet plate and the impact plate.

[0026] 2. The present invention centrally arranges the flow path of the coolant in the middle of the device, makes the whole process of the coolant flow vertical, reduces the flow path of the coolant, and can ensure the heat dissipation efficiency of the coolant to the greatest extent. At the same time, the fins are arranged to diffuse the heat absorbed by the impact plate, make full contact with the coolant, and increase the heat dissipation efficiency.

[0027] 3. The present invention opens the liquid outlet around the device and arranges the secondary heating devices around the device, so that the device can take into account the heat dissipation of the secondary heating devices while jetting heat during the main heating, reducing the production cost. Description of the Drawings

[0028] Figure 1 It is a schematic diagram of the explosion of the jet impingement heat dissipation device structure of the present invention.

[0029] Figure 2 It is a schematic diagram of the structure of the jet impingement heat dissipation device of the present invention.

[0030] Figure 3 It is a schematic diagram of the local structure of the present invention.

[0031] Figure 4 It is a cross-sectional view of the jet impingement heat dissipation device of the present invention.

[0032] Figure 5 It is the front view of the jet impingement heat dissipation device of the present invention.

[0033] Figure numerals: 1-upper cover, 2-jet plate, 3-impact plate, 4-liquid inlet, 5-jet hole, 6-protrusion, 7-connecting part, 8-drainage groove, 9-fin, 10-connecting device, 11-spring screw, 12-liquid inlet pipe, 13-jet chamber. DETAILED DESCRIPTION

[0034] The drawings of the present invention are only for illustrative purposes and should not be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0035] Example 1

[0036] This embodiment provides a jet impingement heat dissipation device, such as Figure 1 As shown, it includes an upper cover 1, a jet plate 2 and a receiving plate 3, a space is formed between the upper cover 1 and the receiving plate 3, and the jet plate 2 is arranged in the space; the upper cover 1 is provided with a liquid inlet 4; the jet plate 2 is located below the upper cover 1, and a plurality of jet holes 5 are provided on the jet plate 2; the receiving plate 3 is set in a rectangular shape and has thermal conductivity, the receiving plate 3 is located below the jet plate 2, and a jet cavity 13 is formed between it and the jet plate 2, the side of the receiving plate 3 away from the jet plate 2 is used to set a heating device, and the jet cavity is respectively provided with liquid outlets corresponding to the four sides of the jet plate.

[0037] A space is formed between the upper cover 1 and the impact plate 3. The jet plate 2 is located below the upper cover 1 and forms a jet cavity 13 with the lower impact plate 3. The coolant enters from the liquid inlet 4 of the upper cover 1, flows through the jet plate 2 arranged below the upper cover 1, and then flows into the lower jet cavity through the jet holes 5 on the jet plate 2. The heating device is arranged on the side of the impact plate 3 facing away from the jet plate 2. The heat generated by the heating device is transferred to the thermally conductive impact plate 3. The coolant flows through the impact plate 3 to take away the heat and flows out from the surrounding liquid outlets, completing the heat dissipation of the heating device.

[0038] During specific implementation, fixing structures are respectively arranged at the four corners of the impact plate 3. The fixing structures are set as protrusions 6, and fixing components are arranged on the protrusions 6 for fixing the heating device.

[0039] Fixing components are arranged on the impact plate 3 to fix the heating device and prevent the heating device from falling off. The fixing components can be selected as screws and nuts, clamps, chain sprockets, adhesives, etc. according to needs. In this embodiment, the fixing components are set as spring screws 11. The spring screws 11 have a certain pre-tightening force, which can ensure tight contact with the contact surface of the heating device.

[0040] As Figure 3 shown, the liquid outlets are respectively arranged in the middle of the four sides of the impact plate 3. A plurality of columns are arranged at the liquid outlets, and drainage grooves 8 are formed at intervals between the plurality of columns.

[0041] Drainage grooves 8 are arranged at the liquid outlets to optimize the flow path of the coolant. In addition, the drainage grooves 8 can make the coolant cover a larger heat exchange surface, increase the heat exchange efficiency, and avoid the occurrence of local overheating phenomena.

[0042] During specific implementation, connecting parts 7 and connecting devices are respectively arranged between the plurality of protrusions 6 and the plurality of drainage columns 8. The impact plate 3 and the upper cover 1 are connected through the connecting device.

[0043] Connecting parts 7 are arranged on the impact plate 3, and the upper cover 1 and the impact plate 3 are connected through the connecting device, ensuring the stability of the device and preventing the upper cover 1 from shifting due to the flow of the coolant. During specific implementation, the connecting part 7 is a protrusion, a threaded depression is arranged on the connecting part 7, the connecting device is set as a screw 10, and the impact plate 3 and the upper cover 1 are connected by screwing.

[0044] As Figure 3 shown, the plurality of protrusions 6, the plurality of connecting parts 7 and the plurality of drainage grooves 8 surround and form the jet cavity 13 on the impact plate 6. The area of the jet plate 2 is larger than that of the jet cavity 13, and the jet plate 2 is arranged on the protrusions 6, the connecting parts 7 and the drainage grooves 8.

[0045] In this embodiment, four protrusions 6 are respectively arranged at the four corners of the rectangular impact plate 3, and a plurality of drainage grooves 8 are respectively arranged at the liquid outlets in the middle of the four sides of the impact plate 3. The number of drainage grooves 8 at the four liquid outlets is the same. A connecting part 7 is arranged between the protrusion 6 and the drainage groove 8, that is, on one side of the impact plate 3, from left to right or from right to left, there are the protrusion 6, the connecting part 7, a plurality of drainage grooves 8, the connecting part 7, and the protrusion 6 in sequence. The protrusion 6, the connecting part 7, and the drainage groove 8 are tightly connected, and an internal space is formed by surrounding on the impact plate 3. This internal space cooperates with the jet plate 2 to form a jet cavity 13. These components are tightly connected and have a delicate structure. The jet plate 2 can be directly placed on the protrusion 6, the connecting part 7, and the drainage groove 8 to form the jet cavity 13, and the installation is simple.

[0046] Preferably, the surfaces of the protrusion 6, the connecting part 7, and the column in contact with the jet plate 2 are at the same height.

[0047] When the upper surfaces of the protrusion 6, the connecting part 7, and the column are at the same height, the jet plate 2 can be directly placed on these components, and at the same time, it can prevent the jet cavity 13 formed from having gaps due to the uneven heights of the various components, resulting in coolant leakage.

[0048] As Figure 2 shown, the upper cover 1 is rectangular, and the position of the upper cover 1 relative to the fixed structure is set as a hollow structure.

[0049] The upper cover 1 is adjusted to fit the shape of the impact plate 3, leaving an accommodation space for the installation of the spring screw 11.

[0050] Specifically in implementation, the liquid inlet 4 is arranged in the middle of the upper cover 1, and the jet holes 5 are densely distributed in the middle of the jet plate 2 and are dispersedly distributed around. A fin 9 is arranged in the middle of the surface of the impact plate 3 close to the jet plate 2.

[0051] Coolant enters from the liquid inlet 4 in the middle of the upper cover 1, then flows into the jet cavity 13 through the jet holes 5 in the middle of the jet plate 2, and flows through the fin 9 arranged in the middle of the jet cavity 13. The whole process of the coolant flow is vertical, reducing the flow path of the coolant, and can ensure the heat dissipation efficiency of the coolant to the greatest extent. At the same time, the fin 9 is arranged to diffuse the heat absorbed by the impact plate 3, making full contact with the coolant and increasing the heat dissipation efficiency.

[0052] Preferably, a liquid inlet pipe 13 is vertically arranged on the liquid inlet 4 for the addition of coolant.

[0053] The working mode of this embodiment is as follows:

[0054] The coolant flows in through the liquid inlet pipe 13, enters the device through the liquid inlet 4 in the middle of the upper cover 1, then flows into the jet cavity 13 through the jet holes 5 provided in the middle of the jet plate 2, and flows through the fins 9 provided in the middle of the jet cavity 13 to take away heat. The whole process of the coolant flow is vertical, reducing the flow path of the coolant and ensuring the heat dissipation efficiency of the coolant to the greatest extent. Finally, the coolant is guided by the drainage grooves 8 in the jet cavity 13 and flows out from the four liquid outlets on the upper, lower, left and right sides respectively.

[0055] Embodiment 2

[0056] This embodiment provides a heat dissipation device for a heating device, which includes a support plate, a plurality of heating devices and the jet impact heat dissipation device; the plurality of heating devices include a main heating device and a plurality of secondary heating devices arranged on the support plate. The impact plate on the jet impact heat dissipation device is arranged in contact with the main heating device, and one or more of the secondary heating devices are correspondingly arranged at each liquid outlet of the jet impact heat dissipation device. A recovery device is arranged on the support plate to recover the coolant cooled by each secondary heating device.

[0057] A plurality of heating devices are arranged on the support plate, with the main heating device arranged in the middle and the secondary heating devices arranged around the main heating device. The jet impact heat dissipation device is arranged on the main heating device to dissipate heat from the main heating device. When the coolant flows out through the liquid outlets provided around the jet cavity, it can flow through the secondary heating devices and take away heat, thus achieving the technical effect of dissipating heat from the main heating device and taking into account the heat dissipation of the secondary heating devices. Finally, the coolant flows into the recovery device below the support plate.

[0058] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the technical solutions of the present invention, rather than limitations on the specific implementation manners of the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the claims of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A jet impingement heat dissipation device, characterized in that: It includes an upper cover, a jet plate and an impact plate, a space is formed between the upper cover and the impact plate, and the jet plate is arranged in the space; the upper cover is provided with a liquid inlet; the jet plate is provided with a plurality of jet holes; the impact plate is arranged in a polygonal shape and has thermal conductivity, a jet cavity is formed between the impact plate and the jet plate, a side of the impact plate away from the jet plate is used to set a heating device, and the jet cavity is respectively provided with liquid outlets corresponding to each side of the jet plate.

2. The jet impingement heat sink according to claim 1, characterized in that: The impact plate is provided with a fixing structure, and the fixing structure is provided with a fixing component for fixing the heating device.

3. A jet impingement heat sink according to claim 2, characterized in that: The liquid outlets are respectively arranged at the middle of each side of the impact plate, and a plurality of columns are arranged extending from the liquid outlet into the jet cavity, and drainage grooves are formed between the plurality of columns.

4. The jet impingement heat dissipation device according to claim 3, characterized in that: A connecting portion and a connecting device are respectively provided between the fixing structure and the drainage groove. The connecting device is arranged on the connecting portion, and the impact plate is connected to the upper cover through the connecting device.

5. The jet impingement heat dissipation device according to claim 4, characterized in that: The impact plate is connected to the upper cover by screws.

6. The jet impingement heat sink according to claim 4, characterized in that: The plurality of fixed structures, the plurality of connecting parts and the plurality of drainage grooves are combined to form the jet cavity between the impact plate and the jet plate. The area of ​​the jet plate is larger than the area of ​​the jet cavity. The jet plate is arranged on the fixed structures, the connecting parts and the drainage grooves.

7. A jet impingement heat sink according to any one of claims 1 to 6, characterized in that: The fixed structure, the connecting portion and the surface of the column in contact with the jet plate are all located at the same height.

8. A jet impingement heat sink according to any one of claims 1 to 6, characterized in that: The position of the upper cover relative to the fixing structure is set as a hollow structure.

9. A jet impingement heat sink according to any one of claims 1 to 6, characterized in that: The liquid inlet is arranged in the middle of the upper cover, the jet holes are densely distributed in the middle of the jet plate and dispersed around, and a fin is arranged in the middle of the surface of the impact plate close to the jet plate.

10. A heat dissipation device for a heating device, characterized in that: It comprises a support plate, a plurality of heating devices and the jet impingement heat sink as claimed in any one of claims 1 to 9; the plurality of heating devices comprise a main heating device and a plurality of secondary heating devices arranged on the support plate, the impact plate on the jet impingement heat sink is arranged in close contact with the main heating device, one or more secondary heating devices are arranged corresponding to each liquid outlet of the jet impingement heat sink, and a recovery device is also arranged on the support plate for recovering the coolant after cooling each secondary heating device.

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