Air-conditioning apparatus
US10753660B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2015 |
| Grant date | Aug 25, 2020 |
| Priority date | — |
| Expiry date | Jan 27, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2700/21174
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An air-conditioning apparatus is able to ensure an appropriate flow rate of refrigerant and an appropriate amount of oil returned to a compressor that match operation conditions regardless of an operating state of a refrigerant circuit and a change in an operation condition. The air-conditioning apparatus includes: a first detector configured to detect a refrigerant temperature within an accumulator; a storage unit configured to store information regarding a two-layer separation temperature of refrigerant and refrigerating machine oil; a determiner configured to compare the refrigerant temperature with the two-layer separation temperature and determine a two-layer separation state of the refrigerant and the refrigerating machine oil; a second detector configured to detect a state of the refrigerant sucked by the compressor; and a control unit configured to adjust an opening degree of a flow control valve on the basis of the two-layer separation state and a state of the sucked refrigerant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.