Air conditioning system of heat pump type

Details Air conditioning system of heat pump type Air conditioning system of heat pump type

1995-02-14

1996-10-01

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

62217, F25B 500, F25B 4104

Patent

active

055602177

ABSTRACT:
A heat pump type air conditioning system comprises an air duct in which air flows in a given direction with an aid of an electric air blower. A condenser is disposed in the air duct. A compressor has an outlet connected to an inlet of the condenser. A receiver dryer has an inlet connected to an outlet of the condenser. An outside expansion valve has an inlet connected to an outlet of the receiver dryer through a first passage. An outside evaporator has both an inlet connected to an outlet of the outside expansion valve and an outlet connected to an inlet of the compressor through a second passage. An inside evaporator is disposed in the air duct at a position upstream of the condenser. An inside expansion valve has both an inlet connected to the first passage and an outlet connected to an inlet of the inside evaporator. A coolant distributing circuit is further employed which feeds the inside evaporator with at least a part of coolant discharged from the receiver dryer when the coolant pressure in the inside evaporator exceeds a predetermined degree.

REFERENCES:
patent: 5299431 (1994-04-01), Iritani et al.
patent: 5375427 (1994-12-01), Hara et al.
patent: 5404729 (1995-04-01), Matsuoka et al.
Patent Abstracts of Japan, vol. 18, No. 366, p. 01/01, Dec. 4, 1994.
Suzuki et al., Dehumidifying-type heat pump system for electric vehicles, Calsonic Corporation, Aug. 31, 1994.
Research Paper on Global Environmental Problems, pp. 1-9, 19 and 69.

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