Ventilation – Vehicle – Having inlet airway
Patent
1998-03-31
1999-10-12
Joyce, Harold
Ventilation
Vehicle
Having inlet airway
454121, B60H 300
Patent
active
059646586
ABSTRACT:
An air passage opening/closing system includes a case having a casing opening portion, and a film door having a plurality of door opening portions. The case has a thin portion extending from a peripheral portion of the casing opening portion in a moving direction of the film door. In the system, a distance between the peripheral portion of the casing opening portion and the film door is not smaller than 5 mm, the case has a thick portion connected to the thin portion, and the thick portion contacts the film door to have a predetermined friction therebetween during moving the film door. Therefore, air flowing from a door opening portion collides with an inner surface of the thin portion of the case so that a flow rate of air is reduced, and then expands in a space between the thin portion of the case and the film door so that the flow rate of air is further reduced. Thus, it can prevent a whistle noise from being caused when the casing opening portion starts opening, while keeping an excellent airtightness of the system when the casing opening portion is fully closed.
REFERENCES:
patent: 5326315 (1994-07-01), Inoue et al.
patent: 5653630 (1997-08-01), Higashihara
Boles Derek S.
Denso Corporation
Joyce Harold
LandOfFree
Air passage opening/closing system for air conditioning apparatu does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Air passage opening/closing system for air conditioning apparatu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air passage opening/closing system for air conditioning apparatu will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-646920