HEAT DISSIPATION UNIT
A heat dissipation unit includes a heat pipe and a base seat. The base seat has a first side and a second side. The second side is formed with a channel and multiple perforations in communication with the first and second sides. The heat pipe has a heat absorption section and a conduction section. The conduction section extends from the heat absorption section in a direction to at least one end of the heat pipe distal from the heat absorption section. Several parts of the heat pipe corresponding to the perforations are received in the perforations and flush with the first side of the base seat. The heat dissipation unit improves the shortcoming of the conventional heat dissipation component that the coplanar precision between the heat pipe and the protruding platform of the base seat is hard to control.
1. Field of the Invention
The present invention relates generally to a heat dissipation unit, and more particularly to a heat dissipation unit with better heat contact plane face.
2. Description of the Related Art
A current electronic apparatus has a central processing unit and other calculation chips inside. In operation, all of the central processing unit and the calculation chips will generate heat. Therefore, a heat dissipation component is needed to help in increasing the heat dissipation efficiency so as to more effectively dissipate the heat. The most often used heat dissipation components are such as heat pipes, vapor chambers, heat sinks and radiating fins. These components serve to speed the heat conduction or transfer the heat to a remote end to dissipate the heat or enlarge the heat dissipation area to enhance the heat dissipation performance. In general, the heat sink is in contact with the central processing unit to conduct the heat generated by the central processing unit. The heat sink can provide larger heat dissipation area. In order to transfer the heat at higher heat conduction speed, a heat pipe is combined with the heat sink. In addition, the section of the heat sink in contact with the central processing unit is formed with a perforation or a channel to directly expose the heat pipe to outer side into contact with the central processing unit to conduct the heat and transfer the heat to the heat sink with larger heat dissipation area to dissipate the heat. Such heat dissipation component composed of the heat pipe and the heat sink is often employed. However, such heat dissipation component still has some shortcomings needing to be improved. That is, one side of the heat sink is formed with a channel for receiving the heat pipe and the heat pipe is fixed in the channel by means of passing the heat pipe through the heat sink or perpendicularly positioning the heat pipe on the heat sink. Under such circumstance, the heat pipe will partially protrude from the section of the heat sink that is in contact with the central processing unit. As a result, the flatness is poor to cause heat resistance. Conventionally, the protruding parts are processed and milled off. However, the parts of the heat pipe that protrude from the channel of the heat sink are not positioned on the same level. Moreover, the wall of the heat pipe often has non-uniform thickness. Therefore, when milling off the protruding parts of the heat pipe, it quite often takes place that the heat pipe is over-milled to damage the wall of the heat pipe. In this case, the heat pipe will lose its function.
SUMMARY OF THE INVENTIONIt is therefore a primary object of the present invention to provide a heat dissipation unit, which has a plane face in contact with a heat source with higher flatness precision.
To achieve the above and other objects, the heat dissipation unit of the present invention includes a heat pipe and a base seat. The base seat has a first side and a second side. The second side is formed with a channel and multiple perforations in communication with the first and second sides. The heat pipe has a heat absorption section and a conduction section. The conduction section extends from the heat absorption section in a direction to at least one end of the heat pipe distal from the heat absorption section. Several parts of the heat pipe corresponding to the perforations are received in the perforations and flush with the first side of the base seat.
The heat dissipation unit of the present invention improves the shortcoming of the conventional heat dissipation unit composed of a heat dissipation base board and a heat pipe that when assembled, the coplanar precision between the heat pipe and the section of the heat dissipation base board in contact with the heat source can be hardly controlled.
The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein:
Please refer to
The heat pipe 11 has a heat absorption section 111 and a conduction section 112. The conduction section 112 extends from the heat absorption section 111 in a direction to at least one end of the heat pipe 11 distal from the heat absorption section 111. The heat pipe 11 is selected from a group consisting of flat-plate heat pipe, D-shaped heat pipe, circular heat pipe and an assembly thereof.
The base seat 12 has a first side 121 and a second side 122 oppositely formed on upper and lower faces of the base seat 12. The second side 122 is formed with a channel 123 and multiple perforations 124 in communication with the first and second sides 121, 122. The heat pipe 11 is received in the channel 123. In addition, several parts of the heat pipe 11 corresponding to the perforations 124 protrude into the perforations 124 and are received in the perforations 124 and flush with the first side 121 of the base seat 12.
The sections of the base seat 12 where the perforations 124 are formed are in direct contact with at least one heat source 2 to conduct heat.
In this embodiment, as shown in
Please now refer to
The present invention has been described with the above embodiments thereof and it is understood that many changes and modifications in the above embodiments can be carried out without departing from the scope and the spirit of the invention that is intended to be limited only by the appended claims.
Claims
1. A heat dissipation unit comprising:
- a base seat having a first side and a second side, the second side being formed with a channel and multiple perforations in communication with the first and second sides; and
- a heat pipe having a heat absorption section and a conduction section, the conduction section extending from the heat absorption section in a direction to at least one end of the heat pipe distal from the heat absorption section, several parts of the heat pipe corresponding to the perforations protruding into the perforations and being received in the perforations and flush with the first side of the base seat.
2. The heat dissipation unit as claimed in claim 1, wherein the heat pipe is a flat-plate heat pipe or a D-shaped heat pipe.
3. The heat dissipation unit as claimed in claim 1, wherein the first and second sides of the heat pipe are oppositely formed on upper and lower faces of the base seat.
4. The heat dissipation unit as claimed in claim 1, wherein the sections of the base seat where the perforations are formed are in direct contact with at least one heat source to conduct heat.
Type: Application
Filed: Nov 26, 2015
Publication Date: Jun 1, 2017
Inventor: Sheng-Huang Lin (New Taipei City)
Application Number: 14/952,922