Large capacity re-entrant groove heat pipe

Patent · Tue Jun 15 04:00:00 EDT 1993

OSTI ID:6342269

Edelstein, F; Kosson, R L

A single section heat pipe is described comprising: a cylindrical wall extending along the entire length of the section; a plurality of axially extending, parallel spaced capillary grooves of arcuate cross-section formed in the wall and located along the entire length of the section; a central axial channel extending along the entire length of the section; a plurality of axially extending ribs projecting radially inward, between adjacent grooves, toward the axial channel, wherein each rib includes (a) a base portion extending from the wall and defining a portion of the groove; and (b) a thicker head portion existing at the radially inward end of each base portion, wherein each adjacent pair of head portions laterally border a relatively narrow re-entrant groove opening, each head portion having a radially inward central convex rib surface exhibiting a first fixed radius of curvature; a first convex rounded surface, of larger fixed radius of curvature, laterally extending continuously from the central surface of the rib to a corresponding adjacent re-entrant groove, a meniscus extending from each first convex surface; and a second convex rounded surface, having a smaller fixed radius of curvature than the first convex rounded surface and located between the first convex surface and a respective groove thereby creating a projection, adjacent projections confronting one another thus defining a narrowed opening of the re-entrant groove.

• Assignee: Grumman Aerospace Corp., Bethpage, NY (United States)
• Patent Number(s): A; US 5219021
• Application Number: PPN: US 7-778263
• OSTI ID: 6342269
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
DESIGN
FINS
HEAT PIPES
OPENINGS
OPERATION
ORIENTATION
WALLS