Liquid-cooled heat dissipation device and vehicle

Patent metadata

Field	Value
Publication number	US-11519672-B2
Application number	US-202016901320-A
Country	US
Kind code	B2
Filing date	Jun 15, 2020
Priority date	Jun 17, 2019
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

A liquid-cooled heat dissipation device is disclosed, comprising a main body, a centrifugal pump, an inlet pipe, an outlet pipe, a centrifugal fan and a motor. The main body comprises a shaft hole, liquid flow channels and airflow channels. The centrifugal pump guides a cooling liquid through the inlet pipe, main body and outlet pipe. The centrifugal fan guides air into the main body axially from the shaft hole. After passing through the centrifugal fan, the air forms centrifugal airflows and leaves the body radially through the airflow channels. With an extended flow path of the cooling liquid and the radial flow of the centrifugal airflow provided by the present invention, the temperature of the cooling liquid may be quickly reduced and the cooling effect may be improved. Thus, the structure is compact, small, light-weight, easy-to-assemble.

First claim

What is claimed is:

1. A liquid-cooled heat dissipation device, comprising: a main body, a centrifugal pump, an inlet pipe, an outlet pipe, a centrifugal fan and a motor;
the main body further comprising: a shaft hole, a plurality of liquid flow channels, a plurality of liquid storage tanks and a plurality of airflow channels, the liquid flow channels being arranged around the shaft hole along a circumferential direction, each of the airflow channels being located between the liquid flow channels and connected to outside space, the liquid storage tanks are respectively located on a first side and a second side of the main body, and two liquid storage tanks on different sides of the main body are in communication with each other through at least one of the liquid flow channels, the liquid storage tanks comprise a centrifugal tank located at a center of the main body, and at least two of the liquid storage tanks adjacent to and directly in communication with the centrifugal tank are fan-shaped tanks;
the centrifugal pump being disposed in the centrifugal tank;
the inlet pipe being in communication with one of the liquid storage tanks;
the outlet pipe being in communication with one of the liquid storage tanks;
the centrifugal fan being disposed in the shaft hole; and
the motor being disposed in the centrifugal fan and configured to drive the centrifugal pump and the centrifugal fan to rotate simultaneously through a drive shaft;
wherein when the drive shaft is rotating, the rotation of the centrifugal pump guides a cooling liquid to pass through the inlet pipe, the main body and the outlet pipe in sequence;
wherein the cooling liquid flows through the liquid storage tanks via the liquid flow channels, and radial jet flows are formed after the cooling liquid passes through the centrifugal pump; and
wherein when the drive shaft is rotating, the rotation of the centrifugal fan guides air to axially flow through the shaft hole into the main body; once the air passes through the centrifugal fan, the air forms centrifugal airflows and leaves the main body radially through the airflow channels.

2. The liquid-cooled heat dissipation device according to claim 1 , wherein outflow direction of each of the centrifugal airflows exiting the centrifugal fan is aligned with a length direction of each of the airflow channels.

3. The liquid-cooled heat dissipation device according to claim 2 , wherein assuming a speed vector of the centrifugal airflow in a tangential direction to the circumference of the centrifugal fan is U, a speed vector of the centrifugal airflow under Global coordinate system is V, an angle between V and U is α, and the length direction of each of the airflow channels is L, a tangential direction to the circumference of the liquid-cooled heat dissipation device is θ and an angle between L and θ is α′, then α=α′.

4. The liquid-cooled heat dissipation device according to claim 3 , wherein assuming the velocity vector of the centrifugal airflow with respect to the tip of a fan blade of the centrifugal fan is W, then a combined velocity vector of W and U is V.

5. The liquid-cooled heat dissipation device according to claim 1 , wherein the liquid flow channels are arranged at intervals, and each of the airflow channels is formed between two adjacent liquid flow channels.

6. The liquid-cooled heat dissipation device according to claim 5 , wherein a cross-sectional shape of each of the liquid flow channels is fan-shaped, and a cross-sectional shape of each of the airflow channels is rectangular.

7. The liquid-cooled heat dissipation device according to claim 6 , wherein each of the liquid flow channels has a tip, two planar side walls and a curved outer wall, the tip of each of the liquid flow channels faces a center of the main body, and the curved outer wall of each of the liquid flow channels is located on a side opposite to the tip, and the two planar side walls of every adjacent two liquid flow channels are parallel to each other.

8. The liquid-cooled heat dissipation device according to claim 5 , wherein cross-sectional areas of each of the liquid flow channels are equal and cross-sectional areas of each of the airflow channels are equal.

9. The liquid-cooled heat dissipation device according to claim 1 , wherein the main body further comprises a first cover and a second cover; the first cover is disposed on a first side of the liquid flow channels in an axial direction thereof; the first cover comprises a plurality of first hollow portions and a plurality of first sealed portions, the first hollow portions are respectively in communication with the liquid flow channels, and the first sealed portions respectively seal the first side of the airflow channels in an axial direction thereof; the second cover is disposed on a second side of the liquid flow channels in the axial direction thereof, the second cover comprises a plurality of second hollow portions and a plurality of second sealed portions, the second hollow portions are respectively in communication with the liquid flow channels, and the second sealed portions respectively seal the second side of the airflow channel in the axial direction.

10. The liquid-cooled heat dissipation device according to claim 9 , wherein the shaft hole penetrates the first cover and the second cover, and both of the first cover and the second cover are circular.

11. The liquid-cooled heat dissipation device according to claim 9 , wherein a cross-sectional shape of each of the first hollow portions respectively corresponds to a cross-sectional shape of each of the liquid flow channels, and a cross-sectional shape of each of the first sealed portions respectively corresponds to a cross-sectional shape of each of the airflow channels, a cross-sectional shape of each of the second hollow portions respectively corresponds to a cross-sectional shape of each of the liquid flow channels, and a cross-sectional shape of each of the second sealed portions respectively corresponds to a cross-sectional shapes of each of the airflow channels.

12. The liquid-cooled heat dissipation device according to claim 1 , wherein the main body further comprises a first shell and a second shell, the first shell is located on a first side of the main body and seals the shaft hole, the second shell is located on the second side of the main body, the shaft hole penetrates through the second shell.

13. The liquid-cooled heat dissipation device according to claim 1 , wherein the shaft hole penetrates through the second side of the main body.

14. The liquid-cooled heat dissipation device according to claim 1 , wherein the main body further comprises a plurality of heat dissipation fins, and the heat dissipation fins are respectively disposed in the airflow channels.

15. The liquid-cooled heat dissipation device according to claim 1 , wherein the drive shaft has a first end and a second end, the first end of the drive shaft is connected to and configured to drive the centrifugal pump to rotate, and the second end of the drive shaft is connected to and configured to drive the centrifugal fan to rotate.

16. The liquid-cooled heat dissipation device according to claim 1 , wherein the centrifugal pump comprises a pump body and a plurality of pump blades, the drive shaft is connected to an axle of the pump body, the pump blades are arranged on the pump body around the axis of the pump body at intervals.

17. The liquid-cooled heat dissipation device according to claim 1 , wherein the centrifugal fan comprises a fan body and a plurality of fan blades, the motor is located in the fan body, th

Assignees

• Gogoro Inc

Inventors

• Lin Sung-Ching
• Liao Tzu-Wen
• Lin Yi-Hsiang
• Li Kai-Chiang
• Lu Yi-Chen

Classifications

• F01P11/04

  Arrangements of liquid pipes or hoses · CPC title

• F04D25/06

  the pump being electrically driven (F04D25/08 takes precedence) · CPC title

• F04D17/04

  of transverse-flow type · CPC title

• F28D1/024

  with an air driving element · CPC title

• F01P5/02

  Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers · CPC title