Heat pump type heating apparatus and control method thereof
US5088646A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1990 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Dec 4, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A refrigeration cycle constitutes a closed cycle for circulating a refrigerant therein and includes at least a variable capacity compressor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger. The indoor heat exchanger is provided with temperature sensor and an indoor fan. A floor heating panel is connected in parallel with the indoor heat exchanger. The panel is provided with a floor temperature sensor. A flow control valve is arranged in a refrigerant upstream side of the panel at a heating operation. A controller controls the compressor, the fan, and the valve in a first state at the start of a heating operation to simultaneously start air heating by the indoor heat exchanger and floor heating by the panel. The compressor, the fan, and the valve are controlled in a second state when a detection output from the room temperature sensor reaches a preset value, thereby maintaining a room temperature and increasing a floor temperature. At least one of the compressor and the valve are controlled in a third state when a detection output from the floor temperature sensor reaches a preset value, thereby maintaining the floor temperature. At least one of the compr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.