Heat radiating cooler with recessed traps for coolant

Patent metadata

Field	Value
Publication number	US-11856740-B2
Application number	US-202117503369-A
Country	US
Kind code	B2
Filing date	Oct 18, 2021
Priority date	Dec 14, 2020
Publication date	Dec 26, 2023
Grant date	Dec 26, 2023

Abstract

A cooler includes a heat radiating member and a cover member that form a coolant flow path. The heat radiating member has a first surface on which an object to be cooled is disposed. The heat radiating member includes multiple fin members protruding into the coolant flow path from a second surface of the heat radiating member. The second surface of the heat radiating member is a part of a surface of the coolant flow path. The cover member includes a trap part in which multiple recesses are formed in a portion of an inner surface of the cover member being another part of the surface of the coolant flow path outside a protruding direction of the fin members.

First claim

What is claimed is:

1. A cooler comprising:
a heat radiating member, having a first surface on which an object to be cooled is disposed;
a flow path forming member, forming, in combination with the heat radiating member, a coolant flow path through which a coolant circulates, wherein the flow path foaming member comprises a cover member;
a plurality of fin members, protruding into the coolant flow path from a second surface of the heat radiating member, the second surface of the heat radiating member being a part of a surface of the coolant flow path; and
a trap part comprising at least one recess, wherein the at least one recess is formed in a portion of an inner surface of the flow path forming member, the inner surface being another part of the surface of the coolant flow path outside a protruding direction of the plurality of fin members,
wherein the at least one recess comprises a plurality of undulating recesses disposed in a circulation direction of the coolant in the coolant flow path.

2. The cooler according to claim 1 , wherein
the at least one recess is recessed from the inner surface of the flow path forming member in a first direction orthogonal to a circulation direction of the coolant in the coolant flow path, and extends along a second direction orthogonal to the circulation direction.

3. The cooler according to claim 2 , wherein
the trap part faces the plurality of fin members in the protruding direction.

4. The cooler according to claim 1 , wherein
the trap part faces the plurality of fin members in the protruding direction.

5. The cooler according to claim 1 , wherein
a direction in which the at least one recess is recessed from the inner surface of the flow path forming member is downward in a vertical direction.

Assignees

• Honda Motor Co Ltd

Inventors

• Honjo Takuya
• Ogura Masami
• Motoyama CHISATO

Classifications

• H05K7/20927 Primary

  Liquid coolant without phase change · CPC title

• H05K7/20918

  the components being isolated from air flow, e.g. hollow heat sinks, wind tunnels or funnels · CPC title

• H02M3/158

  including plural semiconductor devices as final control devices for a single load · CPC title

• H02M7/53871

  with automatic control of output voltage or current · CPC title

• H02P27/08

  with pulse width modulation · CPC title