Electronic apparatus having cooling system

Details Electronic apparatus having cooling system Electronic apparatus having cooling system

1994-12-15

1996-01-16

Wayner, William E.

Heat exchange

Structural installation

165 803, 361695, 417 5, 454184, B60H 100, H05K 720

Patent

active

054840120

ABSTRACT:
An electronic apparatus having a housing in which at least a heat source is housed, the housing being provided with an intake port and an exhaust port, the electronic apparatus comprising a cooling fan mounted in the exhaust port, an auxiliary cooling fan placed near the heat source, a first control portion for controlling a revolving speed of the cooling fan in accordance with a temperature of intake air, and a second control portion for controlling a revolving speed of the auxiliary cooling fan in a first mode when the revolving speed of the cooling fan is less than a reference speed and in a second mode when the revolving speed of the cooling fan is greater than the reference speed, the revolving speed of the auxiliary cooling fan controlled in the first mode being greater than the revolving speed of the auxiliary cooling fan controlled in the second mode.

REFERENCES:
patent: 4659290 (1987-04-01), Kundert
patent: 4722669 (1988-02-01), Kundert
patent: 4756473 (1988-07-01), Takemae et al.
patent: 5107398 (1992-04-01), Bailey
patent: 5173819 (1992-12-01), Takahashi et al.

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