Refrigeration – Reversible – i.e. – heat pump – With flow control or compressor details
Patent
1997-09-30
1999-12-07
Wayner, William
Refrigeration
Reversible, i.e., heat pump
With flow control or compressor details
62510, F25B 110, F25B 1300
Patent
active
059963689
ABSTRACT:
An air conditioning apparatus includes a first, second and third internal devices, and an external device which is provided with a plurality of separately operable units. Each of the units comprises an inverter compressor for compressing a refrigerant under a high temperature and a high pressure, a first heat exchanger, a four-directional valve for sending the refrigerant to the external heat exchanger during a cooling operation and being closed/opened so as to discharge the refrigerant into each of the internal devices during a heating operation, a check valve for switching on/off the flow of the refrigerant which was compressed after being heat-exchanged in the external heat exchanger, a pair of electronic expansion valves for depressurizing the refrigerant respectively, an electronic expansion valve applied to heating and for further depressurizing the temperature-lowered refrigerant which was depressurized in the expansion valves, and an accumulator between the compressor and the four-directional valve and for temporarily storing therein the refrigerant in each step of the cooling and heating operation.
REFERENCES:
patent: 3668883 (1972-06-01), Ruff et al.
patent: 4676072 (1987-06-01), Higuchi
patent: 5381671 (1995-01-01), Saito et al.
patent: 5490399 (1996-02-01), Sada
patent: 5778692 (1998-07-01), Gura
LG Electronics Inc.
Wayner William
LandOfFree
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