Heat pump type heating apparatus and control method thereof

Details Heat pump type heating apparatus and control method thereof Heat pump type heating apparatus and control method thereof

1990-12-04

1992-02-18

Bennet, Henry A.

Heating systems

Automatic control

Heat source is a reverse cycle refrigerating system or heat...

237 69, G05D 2300

Patent

active

050886460

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 compressor and the fan are controlled in a fourth state, thereby controlling the room temperature to a predetermined value.

REFERENCES:
patent: 4575001 (1986-03-01), Oskarsson et al.
patent: 4722197 (1988-02-01), McEntire
Minami Kazunari, "Air Conditioner with Floor Heating Function", Patents Abstracts of Japan, Mar. 10, 1987, vol. 011, No. 078 (M-570).
Yamaguchi Koichiro, "Heat Pump Heater", Patent Abstracts of Japan, Sep. 12, 1985, vol. 9, No. 226 (M-412).

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