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Title: Pulse controlled solenoid valve with low ambient start-up means

Abstract

A refrigeration system is described having in a closed loop connection a compressor having an inlet and an outlet end, a condenser connected to the outlet end of the compressor and responsive to a high pressure gaseous phase recirculating refrigerant for condensing the refrigerant from its gaseous to its liquid phase, an evaporator having an inlet and an outlet end and connected to the condenser and to the inlet end of the compressor, an expansion valve having an inlet and an outlet end and connected between the outlet end of the condenser and the inlet end of the evaporator, the condenser delivering high pressure liquid refrigerant to the inlet end of the expansion valve. The refrigerant expands as it flows through the expansion valve, a controller circuit responsive to the superheat of the refrigerant in the evaporator for controlling the flow of refrigerant through the expansion valve, and a low ambient start-up means responsive to the presence of liquid refrigerant at the inlet end of the expansion valve for overriding normal operations of the valve and maintaining the expansion valve open for refrigerant flow therethrough when liquid refrigerant is not present, the low ambient start-up means returning control for normalmore » operations of the valve when liquid refrigerant is present.« less

Inventors:
Publication Date:
OSTI Identifier:
6152322
Patent Number(s):
US 4686835
Assignee:
NOV; NOV-87-077425; EDB-87-162943
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 28 Nov 1986
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; BUILDINGS; REFRIGERATORS; SOLENOIDS; START-UP; VALVES; CIRCULATING SYSTEMS; COMPRESSORS; CONDENSERS; EVAPORATORS; LIQUID FLOW; PULSE TECHNIQUES; REFRIGERANTS; SUPERHEATING; CONTROL EQUIPMENT; ELECTRIC COILS; ELECTRICAL EQUIPMENT; EQUIPMENT; FLOW REGULATORS; FLUID FLOW; FLUIDS; HEATING; WORKING FLUIDS; 320106* - Energy Conservation, Consumption, & Utilization- Building Equipment- (1987-)

Citation Formats

Alsenz, R H. Pulse controlled solenoid valve with low ambient start-up means. United States: N. p., 1987. Web.
Alsenz, R H. Pulse controlled solenoid valve with low ambient start-up means. United States.
Alsenz, R H. Tue . "Pulse controlled solenoid valve with low ambient start-up means". United States.
@article{osti_6152322,
title = {Pulse controlled solenoid valve with low ambient start-up means},
author = {Alsenz, R H},
abstractNote = {A refrigeration system is described having in a closed loop connection a compressor having an inlet and an outlet end, a condenser connected to the outlet end of the compressor and responsive to a high pressure gaseous phase recirculating refrigerant for condensing the refrigerant from its gaseous to its liquid phase, an evaporator having an inlet and an outlet end and connected to the condenser and to the inlet end of the compressor, an expansion valve having an inlet and an outlet end and connected between the outlet end of the condenser and the inlet end of the evaporator, the condenser delivering high pressure liquid refrigerant to the inlet end of the expansion valve. The refrigerant expands as it flows through the expansion valve, a controller circuit responsive to the superheat of the refrigerant in the evaporator for controlling the flow of refrigerant through the expansion valve, and a low ambient start-up means responsive to the presence of liquid refrigerant at the inlet end of the expansion valve for overriding normal operations of the valve and maintaining the expansion valve open for refrigerant flow therethrough when liquid refrigerant is not present, the low ambient start-up means returning control for normal operations of the valve when liquid refrigerant is present.},
doi = {},
url = {https://www.osti.gov/biblio/6152322}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {8}
}