Patent Number: 6,169,658

Title: Plenumless air cooled avionics rack

Abstract: A rack (70) for a plurality of electronics modules (36) that does not include inlet and outlet air cooling plenums. The rack (70) includes a heat exchanger (72) including three separate sections (78, 80, 82), where each section (78, 80, 82) include spaced-apart parallel fins (84, 86, 88). First and second end sections (80, 82) of the heat exchanger (72) include cooling fins (86, 88) that extend parallel to each other in a front-to-back direction relative to the direction the modules (36) are slid into the rack (70). The first and second end sections (80, 82) are positioned at opposite ends of a center section (78), where the fins (84) of the center section (78) extend in a direction transverse to the direction the modules (36) are slid into the rack (70). The channels between the fins (86, 88) in the first and second end sections (80, 82) are aligned with inlet and outlet ports (94, 98) extending through a back panel (52) of the rack (70). The first and second end sections (80, 82) are angled relative to ends (104, 108) of the center section (78) so that the fins (84, 86, 88) between the sections (78, 80, 82) are aligned. Cooling air that enters the first section (80) from the air inlet port (94) flows through the first end section (80), then down the center section (78) into the second end section (82), and then out the air outlet port (98).

Inventors: Arena; John J. (Ramona, CA), Smith; David M. (Placentia, CA), Matonis; Richard A. (Poway, CA)

Assignee: TRW Inc.

International Classification: F28F 3/00 (20060101); F28F 3/02 (20060101); H05K 7/20 (20060101); H05K 007/20 ()

Expiration Date: 01/02/2018