# US 12,181,224 B2 · Heat dissipation device

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- Number: US 12,181,224 B2
- Document ID: US12181224B2
- Status: Granted
- Kind: B2
- Application number: 17/958,429
- Filed: 2022-10-02
- Published: 2023-07-13
- Granted: 2024-12-31
- Earliest claimed: 2022-01-13
- Assignees: ASUSTeK COMPUTER INC.
- Applicants: ASUSTeK COMPUTER INC.
- Inventors: Jung-Kai Chang; Chi-Yeh Chen
- Web page: https://patentgrep.com/patent/US12181224B2

## CPC

- F28D 15/0275: {Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores}
- G06F 1/20: Cooling means
- F28D 15/0233: {the conduits having a particular shape, e.g. non-circular cross-section, annular (F28D15/0241, F28D15/0266 take precedence)}
- F28D 2021/0029: {Heat sinks}
- F28F 1/32: the means having portions engaging further tubular elements
- G06F 2200/201: Cooling arrangements using cooling fluid
- H10W 40/73: for cooling by change of state
- F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16)
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## Abstract

A heat dissipation device including a heat dissipation fin group, a plurality of heat pipes, and a vapor chamber is provided. The heat dissipation fin group includes a plurality of fins arranged along an extension direction and is divided into a first fin group, a second fin group, and a third fin group. The third fin group is disposed between the first fin group and the second fin group. Each fin of the first fin group and the second group includes a plurality of through holes. Each fin of the third fin group includes a plurality of notches. The heat pipes are disposed through the first fin group and the second fin group by the through holes. The vapor chamber is correspondingly disposed on the third fin group and includes a plurality of grooves. The vapor chamber is in contact with the heat pipes exposed from the notches.

## Claims

### Claim 1

A heat dissipation device, comprising:
a heat dissipation fin group, having a plurality of fins, the fins are arranged along an extension direction and are divided into a first fin group, a second fin group, and a third fin group, the third fin group is disposed between the first fin group and the second fin group, wherein each fin of the first fin group and the second group includes a plurality of through holes, and each fin of the third fin group includes a plurality of notches;
a plurality of heat pipes, which are cylindrical structure, the heat pipes are disposed through the first fin group and the second fin group by the through holes, and a part of the heat pipes corresponding to the third fin group is in contact with the notches, and another part is exposed to the outside, wherein the plurality of heat pipes are extended along the extension direction; and
a vapor chamber, correspondingly disposed on the third fin group, and having a plurality of grooves, the vapor chamber is in contact with the heat pipes exposed from the grooves, wherein the grooves extend along the extension direction and have a shape associated with the cylindrical structure,
wherein the notches are arranged along the extension direction to form a plurality of positioning grooves, and each of the grooves and each of the positioning grooves respectively cover the lower and upper halves of the heat pipes,
wherein the whole body of each of the heat pipes has a straight heat pipe structure that is parallel to the vapor chamber and the heat dissipation group.

### Claim 2 (depends on 1)

The heat dissipation device according to claim 1, wherein the position of each of the heat pipes corresponding to the third fin group is a heat absorption portion, and the position of each of the heat pipes corresponding to the first fin group and the second fin group are two heat dissipation portions.

### Claim 3 (depends on 1)

The heat dissipation device according to claim 1, wherein each of the heat pipes has an inner cavity and a heat conduction medium, and the heat conduction medium is disposed in the inner cavity.

### Claim 4 (depends on 1)

The heat dissipation device according to claim 1, wherein the vapor chamber has a plurality of thermally conductive sheets disposed on the surface of the vapor chamber facing away from the groove.

### Claim 5 (depends on 1)

The heat dissipation device according to claim 1, wherein the heat dissipation fin group, the heat pipes, and the vapor chamber are welded to each other.