Browse Prior Art Database

Wickless Heat Pipe for a Closed Cooling System

IP.com Disclosure Number: IPCOM000080426D
Original Publication Date: 1973-Dec-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Dombrowskas, RJ: AUTHOR [+2]

Abstract

This is a closed-cooling system that provides a method of cooling electronic devices and functions to achieve high-power dissipation. The sealed enclosure protects the electronic devices from hostile environments.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 80% of the total text.

Page 1 of 2

Wickless Heat Pipe for a Closed Cooling System

This is a closed-cooling system that provides a method of cooling electronic devices and functions to achieve high-power dissipation. The sealed enclosure protects the electronic devices from hostile environments.

The electronic devices 10 are mounted or suspended in the enclosure 11, with air space between the devices 10 and the inside walls of the enclosure 11. A trough 12 and tubes 13, 18 form a lattice-like structure and is mounted below the devices 10 and within the enclosure 11, with the inclined tubes 13 connected to hollow walls 14, which, in turn, have large heat dissipating fins 15 attached thereto. An axial flow fan 16, positioned above the devices 10, directs air downward over the heated devices 10 and through the lattice-like structure of the trough 12.

The heated air causes a low-boiling temperature liquid 17 within the trough 12 to boil and produce a vapor, which is transported upward through the tubes 13 to the finned hollow walls
14. The hollow wall 14 area is identified as a vapor accumulation cavity. The accumulated vapor transfers heat energy to the walls 14.

The walls 14 are maintained at a lower temperature by virtue of the large finned areas 15, which allow large quantities of heat to be transferred to the surrounding environment by natural convection and radiation principles.

The vapor converts to liquid and the condensate accumulates on the hollow wall sections and descends by gravity to the...