Air conditioning apparatus for an electric vehicle using least power consumption between compressor and electric heater
US5501267A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1992 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | Dec 28, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H1/00392
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An air conditioning apparatus for heating a cabin of an electric car having reduced electric power consumption is disclosed. An initial setting of the heating operation is that of using a refrigerating cycle 17. An average value of actual electric power consumption using the refrigerating cycle for a predetermined period is calculated. Furthermore, electric power consumption using an electric heater 20 is calculated for obtaining the same heating capacity as that obtained by the refrigerating cycle. A switching of the heating operation from the refrigerating cycle to the electric heater 20 takes place when it is determined that electric power consumption using the electric heater is less than that using the refrigerating cycle 17.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.