ELECTRONIC EXPANSION VALVE

An electronic expansion valve (50) includes a small hole (54a) that expands a refrigerant, a valve body (55c) that opens and closes the small hole, an elastic member (70) that biases the valve body so as to close the small hole, and a solenoid (61) that suctions the valve body so as to open the smal...

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Main Authors TAKANO, YUKIHIRO, SAITOH, SHUSUKE, TAKIGUCHI, KOUJI, INOSHITA, NAOKI, MIGISHIMA, NOBUTOSHI, SANUKI, YASUTAKA
Format Patent
LanguageEnglish
French
German
Published 24.07.2013
Subjects
ACTUATING-FLOATS
BLASTING
COCKS
COMBINED HEATING AND REFRIGERATION SYSTEMS
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEAT PUMP SYSTEMS
HEATING
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
MANUFACTURE OR STORAGE OF ICE
MECHANICAL ENGINEERING
REFRIGERATION MACHINES, PLANTS OR SYSTEMS
REFRIGERATION OR COOLING
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
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Summary:An electronic expansion valve (50) includes a small hole (54a) that expands a refrigerant, a valve body (55c) that opens and closes the small hole, an elastic member (70) that biases the valve body so as to close the small hole, and a solenoid (61) that suctions the valve body so as to open the small hole, and expands the refrigerant by opening and closing the valve body, wherein, by the elastic member being a disc spring in which plural slits (73) formed in a spiral form are provided at mutually equal pitches on the perimeter, there is no need for a guide, the occurrence of sludge due to sliding is suppressed, and the electronic expansion valve operates stably over a long period.
Bibliography:Application Number: EP20110756177