CHECK VALVE AND REFRIGERATION CYCLE SYSTEM

• Main Authors: KOGA HIDEAKI, HAMADA SHOGO, KAWAMOTO TAKUMI
• Format: Patent
• Language: English; Japanese
• Published: 18.10.2022
• 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

To provide a check valve capable of smoothing the opening/closing movement of a valve body, and a refrigeration cycle system.SOLUTION: A check valve 1 comprises an outer pipe part 2, a valve body 3, and a valve element 4. The valve body 3 has a cylindrical valve holder 5 that supports the valve element 4, a valve seat part 6, and a valve port 7. The valve element 4 is provided in the valve holder 5 so as to be axially movable between a valve closed position where it is seated on the valve seat part 6 and a valve open position P1 away from the valve seat part 6. The valve holder 5 is provided with a communication hole 21 that penetrates a cylindrical peripheral surface and communicates the inside of the outer pipe part 2 with the valve port 7. The outer peripheral surface of the valve element 4 and the inner peripheral surface of the valve holder 5 are configured to be in slide contact via contact parts that are in contact with each other and non-contact parts that are separated without contact with each other.SELECTED DRAWING: Figure 1 【課題】弁体の開閉移動を円滑化することができる逆止弁および冷凍サイクルシステムを提供する。【解決手段】逆止弁１が、外管部２と、弁本体３と、弁体４と、を備え、弁本体３は、弁体４を支持する筒状の弁ホルダ５と、弁座部６と、弁口７と、を有し、弁体４は、弁ホルダ５内において、弁座部６に着座する弁閉位置と、弁座部６から離れた弁開位置Ｐ１と、の間を軸方向に移動自在に設けられ、弁ホルダ５には、筒状の周面を貫通して外管部２の内部と弁口７とを連通する連通孔２１が設けられ、弁体４の外周面と弁ホルダ５の内周面とは、互いに接触する接触部と、互いに接触せずに離隔した非接触部と、を介して摺接するように構成されていることを特徴とする。【選択図】図１