PILOT TYPE SOLENOID VALVE

• Main Author: SUEMATSU OSAMU
• Format: Patent
• Language: English; Japanese
• Published: 22.12.2016
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

PROBLEM TO BE SOLVED: To provide a thin and compact pilot type solenoid valve that can be adapted for an internal exhaust type and an external exhaust type.SOLUTION: A pilot type solenoid valve 1 comprises a pilot valve part 2 having a fixed iron core 22 and a movable iron core 18, and a flow passage block body 3 formed with a valve seat to which a diaphragm valve body abuts or moves away from it. The pilot valve part 2 has an NO port 13, a common port 14 and an NC port 15. The flow passage block body 3 is formed with an input port 49, an output port 50, a back chamber, an NO flow passage 45, a common flow passage 46, an NC flow passage 47, an external exhaust flow passage 48 and an internal exhaust flow passage 59. Further, it has first and second metallic balls 70 for sealing either the external exhaust flow passage 48 or the internal exhaust flow passage 59, a flat-plate like flat lid body of the flow passage block body 3 is formed with a flat body communicating passage for communicating the concave part with the common port 14.SELECTED DRAWING: Figure 4 【課題】内部排気型と外部排気型に対応できる薄くコンパクトなパイロット式電磁弁を提供すること。【解決手段】固定鉄心２２及び可動鉄心１８を有するパイロット弁部２と、ダイアフラム弁体が当接離間する弁座が形成された流路ブロック体３と、を備えるパイロット式電磁弁１において、パイロット弁部２が、ＮＯポート１３とコモンポート１４とＮＣポート１５とを備え、流路ブロック体３は、入力ポート４９と、出力ポート５０と、背室と、ＮＯ流路４５と、コモン流路４６と、ＮＣ流路４７と、外部排気流路４８と、内部排気流路５９とが形成され、更に、外部排気流路４８又は内部排気流路５９を封止する第１、第２金属ボール７０を有し、流路ブロック体３の平板状の平蓋体には、凹部とコモンポート１４を連通する平蓋体連通路が形成されている。【選択図】図４