ELECTRONIC EXPANSION VALVE

• Main Authors: TAKANO, YUKIHIRO, SAITOH, SHUSUKE, TAKIGUCHI, KOUJI, INOSHITA, NAOKI, MIGISHIMA, NOBUTOSHI, SANUKI, YASUTAKA
• Format: Patent
• Language: English; French; Japanese
• Published: 22.09.2011
• Subjects: ACTUATING-FLOATS; BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS,e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USERAPPLICATIONS; 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; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; 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; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

Provided is an electronic expansion valve (50) comprising: a small hole (54) that expands a refrigerant; a valve body (55c) that opens and closes said small hole; an elastic member (70) that impels the valve body when closing the small holes, and a solenoid (61) which applies suction to the valve body when opening the small holes. By opening and closing the valve body, the refrigerant is expanded. By constituting an elastic member in a spiral shape to form a disc spring having a plurality of slits (73) provided on the circumference at a uniform pitch, a guiding guide is rendered unnecessary, the generation of sludge caused by sliding is minimized, and the valve can be operated in a stable manner for a long period of time. L'invention porte sur une soupape d'expansion électronique (50) qui comprend : un petit trou (54) qui dilate un réfrigérant ; un corps de soupape (55c) qui ouvre et ferme ledit petit trou ; un élément élastique (70) qui pousse le corps de soupape lors de la fermeture des petits trous, et un solénoïde (61) qui applique une aspiration au corps de soupape lors de l'ouverture des petits trous. Par l'ouverture et la fermeture du corps de soupape, le réfrigérant est dilaté. Par constitution d'un élément élastique sous une forme de spirale de façon à former un ressort à disque ayant une pluralité de fentes (73) disposées sur la circonférence à un pas uniforme, un guide de guidage est rendu inutile, la génération de boue provoquée par le coulissement est minimisée et la soupape peut fonctionner de manière stable pendant une longue période de temps.