Air distribution system
US4344356A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1980 |
| Grant date | Aug 17, 1982 |
| Priority date | — |
| Expiry date | Jun 23, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H3/0608
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An air distribution system for a vehicle cab. The system uses two blowers: a first constant-volume blower for drawing fresh outside air into the cab and a second variable-speed blower for recirculating the inside air. An air filter is positioned upstream of both blowers for filtering out dust and other contaminants. As the fresh outside air passes through the first blower, it is mixed in a mixing zone with inside air which passes thorugh the second blower. This intermixed air is then passed through a temperature controller which includes a heating unit and an air conditioning unit. The temperature controller treats the air stream before it is routed through a series of ductwork to various parts of the operator's compartment of the cab. This two-blower air distribution system is a vast improvement over conventional air distribution systems in that it always provides for a positive air pressurization within the cab thereby preventing the influx of dust.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.