Climate control system having noise reduction door
US7520804B2 · kind B2 · utility
8Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2005 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | Dec 26, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H2001/007
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A HVAC system for reducing the level of air rush and blower noise escaping into the interior of the vehicle when the HVAC system is operating in the recirculation mode. The HVAC system includes a recirculation door having an acoustically transparent portion that enables a component of the air rush and blower noise to pass through the recirculation door to the vehicle exterior instead of entering the vehicle cabin or interior through the recirculation air inlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.