Heat exchanger having an extruded, tiered heat sink

Details Heat exchanger having an extruded, tiered heat sink Heat exchanger having an extruded, tiered heat sink

1997-12-18

1999-11-30

Sparks, Donald

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

361687, 361704, 257712, 165 78, 174 163, H05K 720

Patent

active

059953675

ABSTRACT:
An improved heat exchanger (10) has an extruded, multi-tiered heat sink (22) having a very high heat transfer coefficient structurally associated with a compact, high air velocity air moving means (14). Heat sink (22) has a first tier (56) formed by first fins (34) in a first base element (24) closely spaced apart from third fins (40) in an extruded bridging element (30). A second tier (60) of heat sink (22) is formed by second fins (52) in a second base element (26) closely spaced from fourth fins (46) opposing the third fins (40) in the bridging element (30). Air moving means (16) of the invention employs a backward curved impeller (14) driven by a compact planar dc motor (80) adapted to yield higher than normal impeller speeds with superior thermal transfer performance.

REFERENCES:
patent: 5042257 (1991-08-01), Kendrick et al.
patent: 5146144 (1992-09-01), Lee
patent: 5583317 (1996-12-01), Mennucci et al.
patent: 5832986 (1998-11-01), Kenny et al.
Walker, Industrial Heat Exchangers, A Basic Guide, pp. 28-31, 2nd. Ed., 1990.

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