Invention Grant
- Patent Title: Heat pipe with multiple stages of cooling
-
Application No.: US17152178Application Date: 2021-01-19
-
Publication No.: US11800684B2Publication Date: 2023-10-24
- Inventor: Nicholas W. Pinto , Chih-hung Yen , Nathan Thompson , Anne M. Dailly
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Agency: Vivacqua Crane PLLC
- Main IPC: H05K7/20
- IPC: H05K7/20 ; F28D15/04 ; G08B21/18

Abstract:
A heat pipe is provided for cooling an electronic component of a printed circuit board. The heat pipe includes a tube having an inner diameter surface defining a bore, with the tube having first and second ends along the bore. The heat pipe further includes a sorbent material coated onto the inner diameter surface of the tube, a first liquid contained within the bore, and a second liquid adsorbed by the sorbent material. The second liquid has a second boiling temperature that is higher than a first boiling temperature of the first liquid. The first liquid vaporizes into a first vapor, in response to the tube receiving heat from the electronic component and the first liquid reaching the first boiling temperature. The second liquid is desorbed from the sorbent material and vaporizes into a second vapor in response to the second liquid reaching the second boiling temperature.
Public/Granted literature
- US20220232735A1 HEAT PIPE WITH MULTIPLE STAGES OF COOLING Public/Granted day:2022-07-21
Information query