F - Mech Eng,Light,Heat,Weapons – 25 – D
Patent
F - Mech Eng,Light,Heat,Weapons
25
D
62/91
F25D 1/00 (2006.01) H05K 7/20 (2006.01)
Patent
CA 1204950
ABSTRACT A rack contains a number of shelves (109) arranged on top of each other, which carry, among other things, board magazines (110) with printed circuit boards (111). An apparatus for cooling the aforesaid printed circuit boards containing telecommunications or electronic equipment in each rack (102) is based on the principle that one or more shelves in the rack are integrated each with its own heat exchanger, which is equipped with cooling flanges and at least one tubular coil. The heat exchanger is connected to a cooler (117) for a coolant. The heat exchanger (12) covers the greater part of the horizontal plane of the shelf. Extensive heat-conducting contact surfaces are provided between the board magazines and the body of the shelf and between the latter and the heat exchangers. Each heat exchanger and the cooler are arranged to permit a high packing density of the aforesaid telecommunications equipment in the rack and to contribute towards removing heat emitted by the equipment by means of heat conduction via the aforesaid extensive contact surfaces. In a first embodiment, the total shelf cooling function can thereby provide for the aforesaid removal of heat unassisted. This heat removal is also provided for by natural convection at the hot and cold surfaces and by radiation. In a second embodiment, the shelf cooling func- tion is combined with a row cooling function (open or closed), air conditioner or similar installation.
416737
Fl"pakt Aktiebolag
Gowling Lafleur Henderson Llp
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