Heat pipes, process and apparatus for manufacturing same
US4018269A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 1974 |
| Grant date | Apr 19, 1977 |
| Priority date | — |
| Expiry date | May 8, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49353
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Heat pipes comprising an outer tubular material closed at both ends, a wick of metal fibers, an inner tubular material covered with the wick and inserted in the outer tubular material and a heat transfer volatile liquid confined in the closed outer tubular material. An evaporation region and a condensing region are respectively constituted in the end portions of the outer tubular material. The liquid in the evaporation region vaporizes when heated and the vapor is passed to the condensing region to condense while giving the heat of the vapor to other materials outside the heat pipe, and the condensed liquid is returned to the evaporation region by the capillary action of said wick, thus repeating a cycle of the evaporation and condensation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.