Control device for use in a refrigeration circuit

Refrigeration – Automatic control – Refrigeration producer

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Details

62222, 236 93A, F25B 4104

Patent

active

047888288

ABSTRACT:
A refrigeration circuit including a compressor, a condenser, a control device, an evaporator and an accumulator is disclosed. The elements are serially arranged with the control device located between the outlet of the condenser and the inlet of the evaporator. The control device includes a tubular casing having three spaced walls on its interior surface. The first wall includes a plurality of holes and has a bellows attached to the interior surface thereof, the second wall has a longitudinal bore and a parallel bypass hole therethrough, and the third wall includes an orifice. An operating valve is mounted on the opposite end of the bellows. The bellows expands and contracts in accordance with the temperature of refrigerant fluid and the outlet side of the condenser, thereby, moving the operating valve to the left or the right. Movement of the operating valve controls the open cross-sectional area of the longitudinal bore so that the flow volume of refrigerant fluid in the circuit may be controlled.

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patent: 4679727 (1987-07-01), Alesson

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