Air-conditioning apparatus
US8720212B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2011 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Dec 3, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2500/04
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
When a compressor is in a stopped state and an outside air temperature change rate Tah exceeds zero, a first heating operation is started, and a heating capacity of a compressor heating portion is set in a range not more than a heating capacity upper limit Pmax based on the outside air temperature change rate Tah. A remaining refrigerant liquid amount Ms condensed in the compressor that had not been evaporated is acquired based on the outside air temperature change rate Tah and the heating capacity. If the outside air temperature change rate Tah is zero or below and the remaining refrigerant liquid amount Ms exceeds zero while the compressor is in a stopped state, a second heating operation is started, the compressor heating portion 10 is controlled based on the remaining refrigerant liquid amount Ms, and the refrigerant condensed in the compressor 1 is evaporated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.