Combination HVAC and auxiliary engine cooling
US7128141B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2004 |
| Grant date | Oct 31, 2006 |
| Priority date | — |
| Expiry date | Feb 12, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H1/00849
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle heat transfer module including a conduit for air circulation, an evaporator in the conduit between the cabin air input and cabin air output, and a heater having vehicle engine coolant circulated therethrough, the heater being in a first path between the evaporator and the cabin air output. A first door selectively opens or closes the fresh air input and fresh air output, and a second door blocks a selected amount of cabin air from the first path. A controller controls the first and second doors responsive to heating and cooling requirements. Cabin and fresh air is selectively circulated over the heater and evaporator responsive to detected requirements, including selectively either (a) circulating cabin air from the cabin air input over the evaporator and out the cabin air output, and circulating fresh air from the fresh air input over the heater and out the fresh air output, or (b) blocking the fresh air input and fresh air output and passing cabin air from the cabin air input over one or both of the evaporator and the heater and out the cabin air output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.