Air conditioning apparatus

Details Air conditioning apparatus Air conditioning apparatus

1984-01-23

1984-11-27

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

62160, 62505, F25B 4104

Patent

active

044844549

ABSTRACT:
In a heat pump type air conditioning apparatus of the type wherein a variable capacity type compressor is connected with a conduit including an outdoor heat exchanger, a first capillary tube and an indoor heat exchanger via a four way valve, there are provided a bridge circuit connected between the first capillary tube and the indoor heat exchanger, the bridge circuit being constituted by a first conduit including a first check valve permitting a flow of the refrigerant at the time of cooling and a second capillary tube, and a second conduit connected in parallel with the first conduit and including a second check valve permitting a flow of the refrigerant at the time of heating and a third capillary tube, and a bypass conduit including a controlled valve and connected between the first and second conduits, a cooling conduit for the compressor and connected to the control valve, and a control circuit for controlling the controlled valve in accordance with the temperature of the refrigerant discharged from the compressor, or with the frequency of the alternating current supplied to the driving motor of the compressor, or with the temperature and frequency.

REFERENCES:
patent: 3299661 (1967-01-01), Harnish et al.
patent: 4262492 (1981-04-01), Morita et al.

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