Heat pipe incorporating outer and inner pipes

Details Heat pipe incorporating outer and inner pipes Heat pipe incorporating outer and inner pipes

2006-05-08

2009-06-09

Flanigan, Allen J (Department: 3744)

Heat exchange

Intermediate fluent heat exchange material receiving and...

Liquid fluent heat exchange material

C165S183000

Reexamination Certificate

active

07543630

ABSTRACT:
A heat pipe includes an outer pipe (10), an inner pipe (20), and a hermetic cap (30). The outer pipe has an evaporating end (12) and a condensing end (14). The evaporating end is integrally sealed and receives working fluid. The inner pipe includes an open top and an open bottom. A very narrow gap (40) is defined between the inner pipe and the outer pipe. A plurality of granules is put into the gap to form a porous wicking structure. When the evaporating end is heated by an external heat source, the working fluid is vaporized and flows up along the inner pipe to the condensing end. The working fluid condenses at the condensing end, and flows back down to the evaporating end through the gap. Because the gap is very narrow, surface tension of the working fluid and capillary action of the outer and inner pipes is enhanced.

REFERENCES:
patent: 3537514 (1970-11-01), Levedahl
patent: 3603382 (1971-09-01), Paine et al.
patent: 3651240 (1972-03-01), Kirkpatrick
patent: 3769674 (1973-11-01), Droughton et al.
patent: 3857441 (1974-12-01), Arcella
patent: 3901311 (1975-08-01), Kosson et al.
patent: 4109709 (1978-08-01), Honda et al.
patent: 4116266 (1978-09-01), Sawata et al.
patent: 4505326 (1985-03-01), Hazen
patent: 4765396 (1988-08-01), Seidenberg
patent: 5046553 (1991-09-01), Lindner
patent: 6330907 (2001-12-01), Ogushi et al.
patent: 6725910 (2004-04-01), Ishida et al.

Affiliated with

Also associated with

Rating

Heat pipe incorporating outer and inner pipes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Heat pipe incorporating outer and inner pipes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat pipe incorporating outer and inner pipes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4072319