Method for checking the state of a closed loop air-conditioning system comprising a variable-throughput compressor
US6378316B2 · kind B2 · utility
1Cited by
9References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2000 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Dec 15, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H2001/3292
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The temperature of an airflow cooled by an evaporator of a closed loop air-conditioning system, determined by means of a sensor, is compared with a theoretical value corresponding to the control current of an external-control, variable-displacement compressor, in order to detect a low level of refrigerant fluid in the system or any blocking of a compressor valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.