SUPPORT PLATEHEAT DISSIPATION APPARATUS

• US 20150090435A1
• Filed: 10/28/2014
• Published: 04/02/2015
• Est. Priority Date: 09/29/2013
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: XIA, Zaizhong, TANG, Yun, FANG, Wen
• Granted Patent: US 11,604,035 B2
• Time in Patent Office: Days
• US Class Current: 165/185
• CPC Class Codes: F28F 13/06 by affecting the pattern of flow of the heat-exchange media F28F13/003 takes precedence; static flow control means in header boxes F28F9/026
• CPC Class Codes: F28F 2215/10 Secondary fins, e.g. projections or recesses on main fins
• CPC Class Codes: F28F 3/00 Plate-like or laminated elements; Assemblies of plate-like or laminated elements specially adapted for movement F28F5/00
• CPC Class Codes: F28F 3/02 Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations F28F3/08 takes precedence
• CPC Class Codes: H01L 23/3672 Foil-like cooling fins or heat sinks being part of lead-frames H01L23/49568
• CPC Class Codes: H01L 23/3677 Wire-like or pin-like cooling fins or heat sinks
• CPC Class Codes: H01L 23/467 by flowing gases, e.g. air H01L23/473 takes precedence
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

Embodiments of the present invention relate to a heat dissipation apparatus and relates to the field of heat dissipation technologies, so as to solve a problem that heat dissipation efficiency of heat dissipation fins of an existing heat dissipation apparatus is low. In embodiments of the present invention, the heat dissipation apparatus includes a base plate, where multiple main fins are disposed on the base plate, and multiple auxiliary fins are disposed on the main fins; a gap exists between the auxiliary fins and the base plate; and a blocking structure is disposed and fastened on the base plate and/or the main fins, and the blocking structure can make cooling airflow first flow along the auxiliary fins and then flow along gaps between adjacent main fins and flow out. The present invention is mainly used in the field of communication accessories.

Claims

1. A heat dissipation apparatus, comprising:

a base plate, wherein multiple main fins are disposed on the base plate, and multiple auxiliary fins are disposed on the main fins;

a gap exists between the auxiliary fins and the base plate; and

a blocking structure is disposed and fastened on the base plate or the main fins or both of the base plate and the main fins, and the blocking structure can make cooling airflow first flow along the auxiliary fins and then flow along gaps between adjacent main fins and flow out.

2. The heat dissipation apparatus according to claim 1, wherein multiple strip-shaped main fins are extended on one side surface of the base plate, the multiple main fins are disposed parallel to each other, and lengthwise air ducts are formed between the main fins;

the main fins are disposed in a parallel or slope manner relative to a side edge of the base plate;

the auxiliary fins are disposed on side walls or on top of the main fins; and

the blocking structure is extended at one end of the base plate and on a same side surface as the main fins, and the blocking structure is a baffle plate or a lap-joint wire structure.

3. The heat dissipation apparatus according to claim 2, wherein a cover is disposed between a part of the main fins that are adjacent to one end, of the base plate, which is opposite to the blocking structure;

or

support plates are extended on the base plate and on a same side surface as the main fins, the support plates are disposed on an end side, of the main fins, which is opposite to the blocking structure, and a cover is disposed on the support plates.

4. The heat dissipation apparatus according to claim 3, wherein the multiple main fins are tabular bodies of a same structure and disposed parallel to a side edge of the base plate;

the multiple auxiliary fins are tabular bodies of a same structure and arranged parallel to each other on the main fins, and the auxiliary fins are fastened on the main fins in a plug-in manner and disposed perpendicular to the main fins;

the blocking structure is a baffle plate that is located at one end of the main fins and disposed between adjacent main fins, and the baffle plate is disposed perpendicular to the main fins; and

the cover is disposed between a part of adjacent main fins that are away from the blocking structure, and the cover, the main fins, and the base plate form a ventilation structure; and

the ventilation structure and the baffle plate are located on two opposite sides of the auxiliary fins.

5. The heat dissipation apparatus according to claim 3, wherein the multiple main fins are tabular bodies of a same structure and disposed parallel to a side edge of the base plate;

the multiple auxiliary fins are columnar bodies of a same structure, the auxiliary fins are located on side walls of the main fins and arranged in order between adjacent main fins, and the auxiliary fins are disposed perpendicular to the main fins;

the blocking structure is a baffle plate that is located at one end of the main fins and disposed between adjacent main fins, and the baffle plate is disposed perpendicular to the main fins; and

the cover is disposed between a part of adjacent main fins that are away from the blocking structure, and the cover, the main fins, and the base plate form a ventilation structure; and

the ventilation structure and the baffle plate are located on two opposite sides of the auxiliary fins.

6. The heat dissipation apparatus according to claim 3, wherein the multiple main fins are tabular bodies of a same structure and disposed parallel to a side edge of the base plate;

the multiple auxiliary fins are crescent-shaped structures of a same structure, the auxiliary fins are located on top of the main fins and arranged parallel to each other between adjacent main fins, and the auxiliary fins are disposed perpendicular to the main fins;

the blocking structure is a baffle plate that is located at one end of the main fins and disposed between adjacent main fins, and the baffle plate is disposed perpendicular to the main fins; and

arched plates are disposed between a part of adjacent main fins that are away from the blocking structure, and the arched plates, the main fins, and the base plate form a ventilation structure; and

the ventilation structure and the baffle plate are located on two opposite sides of the auxiliary fins.

7. The heat dissipation apparatus according to claim 3, wherein the multiple main fins are tabular bodies of a same structure and disposed parallel to a side edge of the base plate;

the multiple auxiliary fins are block bodies of a same structure, the auxiliary fins are located on side walls of the main fins and disposed perpendicular to the main fins, two groups disposed symmetrically are formed between adjacent main fins, and auxiliary fins in each group are parallel to each other;

the blocking structure is a baffle plate that is located at one end of the main fins and disposed between adjacent main fins, and the baffle plate is disposed perpendicular to the main fins; and

the cover is disposed between a part of adjacent main fins that are away from the blocking structure, and the cover, the main fins, and the base plate form a ventilation structure; and

the ventilation structure and the baffle plate are located on two opposite sides of the auxiliary fins.

8. The heat dissipation apparatus according to claim 3, wherein the multiple main fins are tabular structures and disposed in a slope manner relative to a side edge of the base plate;

the multiple auxiliary fins are tabular bodies of a same structure and arranged parallel to each other on the main fins, the auxiliary fins are fastened on the main fins in a plug-in manner, and a certain angle exists between the auxiliary fins and the main fins; and

the auxiliary fins are disposed parallel to a side edge of the base plate;

the blocking structure is a baffle plate that is located at one end of the main fins and disposed parallel to the base plate; and

support plates perpendicular to the base plate are disposed on an end side, on the base plate, of the main fins, which is opposite to the blocking structure, a cover parallel to the base plate is disposed on the support plates, and the cover, the support plates, and the base plate form a ventilation structure; and

an air intake vent of the ventilation structure is corresponding to an air exhaust vent of the lengthwise air duct.

9. The heat dissipation apparatus according to claim 8, wherein the air exhaust vent of the ventilation structure is provided at one end opposite to the air intake vent;

or

the air exhaust vent of the ventilation structure is provided at one end that is adjacent to the air intake vent and corresponding to a slope direction of the main fins.

10. The heat dissipation apparatus according to claim 3, wherein the multiple main fins are columnar bodies of a same structure and arranged on the base plate in a form of a matrix;

the multiple auxiliary fins are tabular structures of a same structure and separately fastened on each row of the main fins, and the multiple auxiliary fins are disposed parallel to each other;

the blocking structure is a baffle plate perpendicular to the base plate and fastened on a horizontal row of main fins that are adjacent to one end of the base plate;

support plates perpendicular to the base plate are disposed on an end side, on the base plate, of the main fins, which is opposite to the blocking structure, a cover parallel to the base plate is disposed on the support plates, and the cover, the support plates, and the base plate form a ventilation structure; and

an air intake vent of the ventilation structure is corresponding to an air exhaust vent of the lengthwise air duct; and

separating plates parallel to the base plate are further disposed on vertical main fins that are located on two end sides of the base plate.

11. The heat dissipation apparatus according to claim 3, wherein the multiple main fins are columnar bodies of a same structure and arranged on the base plate in a form of a matrix;

the auxiliary fins are wire strips, and the auxiliary fins are connected between the main fins in a staggered manner;

the blocking structure is a lap-joint wire structure formed by densely intertwined auxiliary fins and located between a horizontal row of main fins that are adjacent to one end of the base plate; and

support plates perpendicular to the base plate are disposed on an end side, on the base plate, of the main fins, which is opposite to the blocking structure, a cover parallel to the base plate is disposed on the support plates, and the cover, the support plates, and the base plate form a ventilation structure; and

an air intake vent of the ventilation structure is corresponding to an air exhaust vent of the lengthwise air duct.

12. The heat dissipation apparatus according to claim 11, wherein the auxiliary fins are aluminum wires or copper wires.

13. The heat dissipation apparatus according to claim 3, wherein heat dissipation teeth are disposed on the cover, and the heat dissipation teeth are configured to accelerate heat dissipation of airflow.

14. The heat dissipation apparatus according to claim 2, wherein a material of the main fins is a metal material.

15. The heat dissipation apparatus according to claim 2, wherein the multiple main fins are tubular bodies of a same structure and disposed parallel to a side edge of the base plate;

the multiple auxiliary fins are tabular bodies of a same structure and arranged parallel to each other on the main fins, and the auxiliary fins are disposed perpendicular to the main fins; and

in an extending direction of the main fins, the blocking structure and a hollow cuboid are disposed on two opposite sides of the auxiliary fins.

16. The heat dissipation apparatus according to claim 15, wherein in a direction perpendicular to the extending direction of the main fins, bracket plates that are connected to the auxiliary fins and parallel to each other are disposed at two ends of the base plate;

and

the hollow cuboid forms a ventilation structure, and a gap exists between the hollow cuboid and the base plate; and

the blocking structure is a baffle plate disposed parallel to the base plate.

17. The heat dissipation apparatus according to claim 16, wherein main fins and auxiliary fins are disposed on two sides of the base plate and the two sides of the base plate are disposed symmetrically;

and

correspondingly, the hollow cuboid is disposed corresponding to the main fins and the auxiliary fins on the two sides of the base plate.

18. The heat dissipation apparatus according to claim 17, wherein the main fins are heat pipes, graphite, or water pipes.

19. The heat dissipation apparatus according to claim 16, wherein through-holes are provided on the auxiliary fins, and the main fins are disposed through and are fastened in the through-holes.

20. The heat dissipation apparatus according to claim 1, wherein a fan is disposed in an exhaust position of the cooling airflow.