Refrigeration cycle apparatus with oil separator switching valve
US10156389B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2015 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | Mar 27, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A refrigeration cycle apparatus includes: a refrigerant circuit including a compressor, a condenser, an expansion device, and an evaporator; a first detector provided to the compressor, and configured to detect a temperature of the compressor; a second detector provided between the compressor and the expansion device in the refrigerant circuit, and configured to detect one of a temperature of refrigerant and a pressure of the refrigerant; and a controller configured to control at least one of frequency of the compressor and an opening degree of the expansion device based on the temperature detected by the first detector and one of the temperature and the pressure detected by the second detector so as to maintain a concentration of a refrigerating machine oil dissolved in the refrigerant in the compressor and an oil level of the refrigerating machine oil in the compressor within respective predetermined ranges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.