Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1987-12-28
1989-05-30
Tolin, Gerald P.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
165 803, 361386, H05K 720
Patent
active
048356581
ABSTRACT:
The ventilation device (10) for components (11) disposed in rows (R1-R4) separated by corridors (C1-C5) on one face of a substrate (12) includes an inlet conduit (14) for fresh air and an outlet conduit (15) comprising two compartments (15a; 15b) each covering two rows (R1, R2; R3, R4) of components (11) and having an opening (18a; 19b) discharging into the corridor (C2; C4) separating the respective rows. The fresh air at the inlet (16) of the conduit (14) discharges into the other corridors (C1, C3, C4) such that each component (11) receives the fresh air directly. The invention thus has the advantage of effectively cooling a great number of high-power components mounted at high density on a printed circuit board, because of its simple, compact structure, which enables ventilation with less noise and with high output.
REFERENCES:
patent: 3893910 (1974-10-01), Ringuet
patent: 4233644 (1980-11-01), Hwang
patent: 4296455 (1981-10-01), Leacraft
patent: 4489363 (1984-12-01), Goldberg
patent: 4660123 (1987-04-01), Hermann
Cooling Electrical Equipment, Gaunt, IBM Tech. Disc. Bul., vol. 20, No. 6, Nov. 1977, p. 2428.
Bull S.A.
Tolin Gerald P.
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