Evaporation pressure control device
US4129995A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1977 |
| Grant date | Dec 19, 1978 |
| Priority date | — |
| Expiry date | Feb 9, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7796
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
In a refrigeration cycle of an air conditioning system of the type, in which lubricating oil for lubricating a compressor circulates through the refrigeration cycle together with refrigerant, an evaporation pressure control device is provided between an evaporator and the compressor for not only controlling the amount of refrigerant circulating through the refrigeration cycle in response to the pressure of the refrigerant out of the evaporator, but permitting the refrigerant to return to the compressor when the pressure of the refrigerant out of the evaporator is extremely decreased owing to the leakage of the refrigerant, whereby seizure of the compressor can be prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.