Sensor for pressure controlled switching valve for refrigeration system
US5285652A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 8, 1993 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | Apr 8, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H36/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A refrigerant flow switching device for alternately conveying refrigerant from a high pressure and a low pressure evaporator to a compressor of a refrigeration system, and a refrigerator using such a refrigeration system, includes a refrigerant flow switching valve for alternately conveying refrigerant from the high and low pressure evaporators to the compressor. Said switching valve is controlled by a pressure switch that utilizes the pressure difference between the refrigerant from the high pressure evaporator and that from the low pressure evaporator to cyclically open or close a switch assembly, moving the switch between low and high pressure positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.