Vapor pressure-adjusting valve and refrigeration system using sa

Details Vapor pressure-adjusting valve and refrigeration system using sa Vapor pressure-adjusting valve and refrigeration system using sa

1989-06-27

1990-06-26

Tapolcai, William E.

Refrigeration

Automatic control

Refrigeration producer

137494, F25B 4104

Patent

active

049361082

ABSTRACT:
A refrigeration system for use in an automotive air conditioner comprises a compressor for compressing vapor-phase refrigerant, a condenser connected to the outlet of the compressor, an expansion valve connected to the outlet of the valve, and a vapor pressure-adjusting valve mounted in the passage extending from the evaporator to the compressor. When the vapor pressure inside this passage is less than a certain value, the adjusting valve reduces the flow of refrigerant from the evaporator to the compressor to maintain the vapor pressure constant. A part of the liquid-phase refrigerant on the downstream side of the condenser is added to the refrigerant evaporated by the evaporator, by means of the adjusting valve.

REFERENCES:
patent: 3064447 (1962-11-01), Heidorn
patent: 3121373 (1964-02-01), Murphy et al.
patent: 3180107 (1965-04-01), Baker et al.
patent: 3818717 (1974-06-01), Peruglia
patent: 4129995 (1978-12-01), Usami
patent: 4619115 (1986-10-01), Weber

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