EXPANSION VALVE

Provided is an expansion valve capable of adjusting a flow rate with excellent responsiveness.An expansion valve 1 includes: a main body portion 6 having a valve chamber 15 and a valve seat; a case 3 fixed to the main body portion 6; and a screw shaft 8 that is driven by driving force of rotation ob...

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Bibliographic Details
Main Authors MURATA Naoki, OGAWA Noriyuki, SATO Koji, URAKAWA Ryota, KONDO Takayuki
Format Patent
LanguageEnglish
French
German
Published 30.08.2023
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:Provided is an expansion valve capable of adjusting a flow rate with excellent responsiveness.An expansion valve 1 includes: a main body portion 6 having a valve chamber 15 and a valve seat; a case 3 fixed to the main body portion 6; and a screw shaft 8 that is driven by driving force of rotation obtained by reducing a rotational movement of a rotor 13 due to the excitation of an excitation portion 2 by a speed reduction mechanism 7 to move a valve body 9 forward and backward. A bellows 10 configured to seal a gap between the inside of the case 3 and the valve chamber 15 is arranged in the valve chamber 15 to be externally fitted onto the valve body 9, and the rotation of the valve body 9 relative to the main body portion 6 is restricted by rotation restricting means 10, 18b, 43.
Bibliography:Application Number: EP20200849711