Air passage switching system for air conditioner
US6193600A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 24, 1999 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Aug 24, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H2001/00714
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An air passage switching system includes a case forming an air passage having an opening portion, and a butterfly door for opening and closing the opening. The door includes a door body portion made of a material having a high rigidity, and a seal member attached to the door body. The seal member is made of an elastic material, and is formed into a thin-plate shape to extend from an outer peripheral portion of the door body portion toward an outer side. The seal member of the door is press-fitted to a case seal surface around the opening portion along a seal line (D), so that the opening portion is closed. The door is set in such a manner that an inner peripheral curvature radius (RC2) of a corner portion of the case seal surface on the seal line is larger than an outer peripheral curvature radius (RD) of the seal member on the corner portion. Thus, the air passage switching system prevents air leak due to a deformation of the seal member while being produced in low cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.