Heat pump type air conditioning system for automotive vehicle
US5899086A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Oct 30, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H2001/00949
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A heat pump type air conditioning system (A) for air-conditioning a passenger compartment of an automotive vehicle. The air conditioning system comprises first and second units (10, 20). The first unit includes a heater core (12) and a first evaporator (13) while the second unit includes a second condenser (22) and a second evaporator (23). A compressor (2) and a first condenser (3) are disposed outside the first and second units which constitute a refrigeration cycle including the first evaporator (13). A circuit change-over valve (4) is provided to cause flow of the refrigerant discharged from the compressor (2) to be changed over between a refrigeration operation refrigerant circuit including the first condenser and a heating operation refrigerant circuit including a bypass passage for allowing the refrigerant to flow bypassing the first condenser. A third evaporator (30) is disposed outside the first and second units (10, 20). A flow control valve (31) is provided to control a flow amount of the engine coolant circulating through the third evaporator (30) in accordance with a thermal load condition of the vehicle under control of an opening degree of the flow control valve, dur…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.