Heat dissipating device and electronic apparatus

Patent metadata

Field	Value
Publication number	US-9532485-B2
Application number	US-201414495117-A
Country	US
Kind code	B2
Filing date	Sep 24, 2014
Priority date	Feb 21, 2014
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

A heat dissipating device located on a same base plate with a fan, and a first side of the heat dissipating device abutting an air outlet of the fan. The heat dissipating device includes a plurality of horizontal heat dissipating fins horizontally arranged in parallel with each other in a stacked manner such that arrangement of the plurality of horizontal heat dissipating fins is consistent with a direction of the air outlet of the fan, wherein two adjacent horizontal heat dissipating fins have a gap there between, through which air from the air outlet of the fan is discharged, wherein, a first horizontal heat dissipating fin located at an uppermost layer is coupled with a heat pipe and the heat pipe is coupled with at least one heating element. The heat dissipating device is capable of enhancing heat dissipating efficiency and improving the user's usage experience.

First claim

The invention claimed is:

1. A heat dissipating device comprising plurality of horizontal heat dissipating fins being horizontally arranged in parallel with each other in a stacked manner, such that arrangement of the plurality of horizontal heat dissipating fins is consistent with an airflow direction of an air outlet of a fan abutting a first side of the heat dissipating device, wherein two adjacent horizontal heat dissipating fins have a gap there between, through which air from the air outlet of the fan is discharged, wherein a first horizontal heat dissipating fin is located at an uppermost layer among the plurality of horizontal heat dissipating fins is coupled with a heat pipe, the plurality of horizontal heat dissipating fins extends to a vertical direction on a second side of the heat dissipating device and is closed connected with each other.

2. The heat dissipating device according to claim 1 , further comprising a plurality of vertical heat dissipating fins located at a second side of the heat dissipating device and configured to couple the plurality of horizontal heat dissipating fins with each other, the plurality of vertical heat dissipating fins conducting heat from the first horizontal heat dissipating fin to other horizontal heat dissipating fins.

3. The heat dissipating device according to claim 1 , further comprising a plurality of vertical heat-conducting sections located in the gap between two adjacent horizontal heat dissipating fins among the plurality of horizontal heat dissipating fins, at least one of the vertical heat-conducting sections being coupled with two adjacent horizontal heat dissipating fins to conduct heat between the two adjacent horizontal heat dissipating fins.

4. The heat dissipating device according to claim 1 , wherein the heat pipe extends to the second side of the heat dissipating device.

5. The heat dissipating device according to claim 1 , wherein the horizontal heat dissipating fins have at least one aperture adjacent to the air inlet of the fan, wherein a diameter of the aperture is less than 1 mm.

6. The heat dissipating device according to claim 1 , wherein the fan is a vibrating diaphragm fan comprising:
a vibrating diaphragm fan body including a vibrating diaphragm and a shell supporting the vibrating diaphragm, the shell being provided with an aperture for air inlet and/or air outlet; and
a damping bracket supporting the vibrating diaphragm fan body on an electronic apparatus.

7. The heat dissipating device according to claim 6 , wherein the damping bracket is at least one corrugated edge fold extending from a shell edge to an exterior of the shell and being bent.

8. The heat dissipating device according to claim 7 , wherein a damping material is set at an end of one corrugated edge fold farthest from the shell edge along the extending direction so that the end of the corrugated edge fold is connected with the electronic apparatus in a damping manner.

9. An electronic apparatus that includes a heat dissipating device that comprises a plurality of horizontal heat dissipating fins being horizontally arranged in parallel with each other in a stacked manner, such that arrangement of the plurality of horizontal heat dissipating fins is consistent with an airflow direction of an air outlet of the a fan abutting a first side of the heat dissipating device, wherein two adjacent horizontal heat dissipating fins have a gap there between, through which air from the outlet of the fan is discharged, wherein a first horizontal heat dissipating fin is located at an uppermost layer among the plurality of horizontal heat dissipating fins and is coupled with a heat pipe, the plurality of horizontal heat dissipating fins extends to a vertical direction on a second side of the heat dissipating device and is closed connected with each other.

10. The electronic apparatus according to claim 9 , wherein the heat dissipating device further comprises a plurality of vertical heat dissipating fins located at a second side of the heat dissipating device and configured to couple the plurality of horizontal heat dissipating fins with each other, the plurality of vertical heat dissipating fins conducting heat from the first horizontal heat dissipating fin to other horizontal heat dissipating fins.

11. The electronic apparatus according to claim 9 , wherein the heat dissipating device further comprises a plurality of vertical heat-conducting sections located in the gap between two adjacent horizontal heat dissipating fins among the plurality of horizontal heat dissipating fins, the vertical heat-conducting section being coupled with two adjacent horizontal heat dissipating fins to conduct heat between the two adjacent horizontal heat dissipating fins.

12. The electronic apparatus according to claim 9 , wherein the heat pipe extends to the second side of the heat dissipating device.

13. An electronic apparatus, comprising:
at least one heating electronic device;
a heat dissipating device made of a heat conducting material and including a base plate, a first group of heat dissipating fins and a second group of heat dissipating fins, the first group of heat dissipating fins and the second group of heat dissipating fins being disposed on a first surface of the base plate;
a conducting section disposed between the electronic device and the heat dissipating device for conducting heat generated by the electronic device to the heat dissipating device for dissipation;
an airflow acceleration device, wherein airflow blown out of an air outlet of the airflow acceleration device covering the first group of heat dissipating fins;
wherein, a height of the first group of heat dissipating fins with respect to the base plate is greater than a height of the second group of heat dissipating fins with respect to the base plate.

14. The electronic apparatus according to claim 13 , wherein the first group of heat dissipating fins include a plurality of first heat dissipating fins disposed in parallel on the first surface, and the second group of heat dissipating fins includes a plurality of second heat dissipating fins disposed in parallel on the first surface, a gap between two adjacent first heat dissipating fins among the plurality of first heat dissipating fins is less than a gap between two adjacent second heat dissipating fins among the plurality of second heat dissipating fins.

15. The electronic apparatus according to claim 13 , wherein the heat dissipating device further includes a first cover and a second cover, the first cover is fixedly connected with ends of the plurality of first heat dissipating fins far away from the base plate, and the second cover is fixedly connected with ends of the plurality of second heat dissipating fins far away from the base plate.

16. The electronic apparatus according to claim 13 , wherein the airflow acceleration device is a vibrating diaphragm fan that comprises:
a vibrating diaphragm fan body including a vibrating diaphragm and a shell supporting the vibrating diaphragm, with the shell being provided with an aperture for air inlet and/or an air outlet;
a damping bracket for reducing an effect of vibration of the vibrating diaphragm fan on an electronic apparatus, the damping bracket supporting the vibrating diaphragm fan body on the electronic apparatus, while the vibrating diaphragm fan body is not in direct contact with the electronic apparatus.

17. The electronic apparatus according to claim 13 , wherein the electronic apparatus further comprises a controller and a temperature detecting device, the temperature detecting device being use

Assignees

• Lenovo Beijing Co Ltd

Inventors

• Li Jinyu
• Li Ziran
• Yuan Chunfeng
• Ma Yingfeng

Classifications

• H05K7/20172

  Fan mounting or fan specifications · CPC title

• F04B43/046

  with piezoelectric drive · CPC title

• F04B45/047 Primary

  Pumps having electric drive · CPC title

• H04M1/02

  Constructional features of telephone sets · CPC title

• F04B45/04

  having plate-like flexible members, e.g. diaphragms (F04B45/10 takes precedence) · CPC title