Evaporator pressure regulator control and diagnostics

A method includes cycling an electronic evaporator pressure regulator valve fluidly coupled to a refrigeration circuit to regulate flow through the electronic evaporator pressure regulator valve and sensing a current drawn by the electronic evaporator pressure regulator valve during cycling of the e...

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Bibliographic Details
Main Authors VOGH, III RICHARD P, MAIER ALBERT W, CAMPBELL TIMOTHY D, AGGERS JOHN R, GELBER SCOTT M, KENSINGER ROBERT A
Format Patent
LanguageEnglish
Published 02.03.2010
Subjects
ACTUATING-FLOATS
BLASTING
COCKS
COLD ROOMS
COMBINED HEATING AND REFRIGERATION SYSTEMS
CONTROLLING
COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEAT PUMP SYSTEMS
HEATING
ICE-BOXES
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
MANUFACTURE OR STORAGE OF ICE
MECHANICAL ENGINEERING
PHYSICS
REFRIGERATION MACHINES, PLANTS OR SYSTEMS
REFRIGERATION OR COOLING
REFRIGERATORS
REGULATING
SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
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Summary:A method includes cycling an electronic evaporator pressure regulator valve fluidly coupled to a refrigeration circuit to regulate flow through the electronic evaporator pressure regulator valve and sensing a current drawn by the electronic evaporator pressure regulator valve during cycling of the electronic evaporator pressure regulator valve. The method further includes determining a valve condition of the electronic evaporator pressure regulator valve based on the sensing.
Bibliography:Application Number: US20070874506