MANUFACTURING METHOD FOR POWER ELEMENT, POWER ELEMENT AND EXPANSION VALVE USING THE SAME

• Main Authors: OKUTSU KINYA, KAMATA NAOKI, MATSUDA RYO
• Format: Patent
• Language: English; Japanese
• Published: 16.03.2023
• 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

To provide a manufacturing method for a power element capable of reducing the number of components and a weight and facilitating manufacturing, a power element, and an expansion valve using the power element.SOLUTION: A manufacturing method for a power element including an upper cover member, a receiving member, and a diaphragm sandwiched between the upper cover member and the receiving member, comprises: charging working gas between the upper cover member and the diaphragm through a hole or slit formed in the upper cover member; and heating and melting the material of the upper cover member forming the vicinity of the hole or the slit, to fill the hole or the slit with the melted material.SELECTED DRAWING: Figure 2 【課題】部品点数の削減や軽量化を図り、製造容易であるパワーエレメントの製造方法、パワーエレメント及びそれを用いた膨張弁を提供する。【解決手段】上蓋部材、受け部材、及び前記上蓋部材と前記受け部材との間に挟まれるダイアフラムを含むパワーエレメントの製造方法は、前記上蓋部材に形成された穴またはスリットを介して、前記上蓋部材と前記ダイアフラムとの間に作動ガスを充填する工程と、前記穴または前記スリットの近傍を成す前記上蓋部材の素材を加熱溶融して、溶融した素材により前記穴または前記スリットを埋める工程と、を有する。【選択図】図２