Ventilation – Vehicle – Having forced recirculation
Patent
1996-12-04
1998-11-17
Joyce, Harold
Ventilation
Vehicle
Having forced recirculation
181225, 454158, 454906, B60H 126
Patent
active
058368132
ABSTRACT:
An inside air/outside air switching case employing a rotary door, since an introduced air flows along an inner surface of a circumferential wall of the rotary door, an air flow guiding portion constructed of a plurality of protruding portions formed in a corrugated shape of concavities and convexities is formed on an inner surface of the circumferential wall of the rotary door. In this way, the air flow directed toward a suction inlet is made uniform by means of the guiding portion, and the air flow noise can be suppressed.
REFERENCES:
patent: 5391112 (1995-02-01), Wardlaw
Journal of Nippondenso Technical Disclosure 33-027, published Jan. 15, 1984 .
Ito Koji
Miyata Manabu
Shirota Yuichi
Sugi Hikaru
Tanaka Hisashi
Denso Corporation
Joyce Harold
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