Hydraulically driven heating and air conditioning system for veh

Details Hydraulically driven heating and air conditioning system for veh Hydraulically driven heating and air conditioning system for veh

1990-10-23

1992-02-04

Ford, John

Heat exchange

With vehicle feature

Heating and cooling

165 42, 165 61, 237 123R, 237 123A, 237 123B, 122 26, 623231, 623234, 62501, 62243, 126247, B60H 100

Patent

active

050852698

ABSTRACT:
An air conditioning system for vehicles includes a hydraulic circuit having a hydraulic motor and a radiator and a refrigerating circuit having a compressor connected to the hydraulic motor and an evaporator disposed in an air conditioning air duct. The system includes a first pump supplying oil to the hydraulic motor and a second pump supplying the oil to the radiator disposed in the air conditioning air duct. A clutch controls the connection of the hydraulic motor and the compressor. A valve is provided between the second pump and the radiator for generating a pressure difference in the oil between the entrance and exit sides of the valve in order to raise the temperature of the oil. A switching mechanism switches the flow of the oil between a first pathway where the valve is located and a second pathway. The system can operate as a heating system by driving the second pump and passing the oil through the valve; as an air cooling system by driving the compressor and preventing the operation of the valve; and as a dehumidification and heating system by driving the compressor and operating the valve.

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