Automotive air conditioner charging station with over-ride contr

Details Automotive air conditioner charging station with over-ride contr Automotive air conditioner charging station with over-ride contr

1985-08-26

1986-11-25

Tanner, Harry

Refrigeration

Automatic control

Withdrawing or adding refrigerant from or to normally closed...

62292, F25B 4500

Patent

active

046241124

ABSTRACT:
An air conditioner charging station includes oil and refrigerant reservoirs, a vacuum pump, and an electronic sequencing unit. A header conduit connected to the reservoirs and vacuum pump is connected to a cross-over conduit, which in turn is connected to conduits extending to the high and low pressure sides of an air conditioner compressor. Electrically operated valves are provided in the cross-over conduit, in a dump conduit connected to the cross-over conduit, and in branch conduits connected to the reservoirs and to the vacuum pump. An over-ride control of the cross-over valve is provided, responsive to the pressure of the high pressure side and an over-ride control is provided for cross-over valve, activated if the ambient temperature is below a predetermined level. An excessively high pressure in the high pressure side causes the closing of the valve in the refrigerant reservoir branch conduit.

REFERENCES:
patent: 2499170 (1950-02-01), Shoemaker
patent: 3303663 (1967-02-01), Miller et al.
patent: 3400552 (1968-09-01), Johnson et al.
patent: 3695055 (1972-10-01), Bruce
patent: 3785163 (1974-01-01), Wagner
patent: 3873289 (1975-03-01), White
patent: 4245480 (1981-01-01), Saunders
patent: 4261178 (1981-04-01), Cain
patent: 4285206 (1981-08-01), Koser
patent: 4364236 (1982-12-01), Lower et al.
patent: 4513578 (1985-04-01), Proctor et al.

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