JPH0735874U - solenoid valve - Google Patents
solenoid valveInfo
- Publication number
- JPH0735874U JPH0735874U JP6600293U JP6600293U JPH0735874U JP H0735874 U JPH0735874 U JP H0735874U JP 6600293 U JP6600293 U JP 6600293U JP 6600293 U JP6600293 U JP 6600293U JP H0735874 U JPH0735874 U JP H0735874U
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- Prior art keywords
- plunger
- valve
- cylinder
- packing
- valve opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
(57)【要約】
【目的】開弁時及び閉弁時のプランジャ動作を緩やかに
して、流体の脈動等による振動騒音が発生しないように
改良した電磁弁を提供することにある。
【構成】入口通路１と出口通路２の流路途中に弁口３を
設けた弁本体４と、該弁本体４に設けられた弁口部に開
口するシリンダ筒６と、弁口３に接離する弁部１０を有
しシリンダ筒６内に移動できるように挿入されたプラン
ジャ７と、シリンダ筒６の外側に配設される電磁コイル
１４及びシリンダ筒６の端部に嵌着される吸引子５と、
該吸引子とプランジャ７との間に組込まれたプランジャ
付勢ばね８とを具備する電磁弁において、前記プランジ
ャ７にシリンダ筒６の内周面を摺動可能なシールパッキ
ン２５を設け、該パッキンに流体流通の絞り作用をなす
切欠溝又は小孔を形成して、プランジャ７と吸引子５間
の前記パッキン２５で仕切られた空間をダンパー室２７
としたことを特徴とする。
(57) [Abstract] [Purpose] To provide an improved solenoid valve in which the plunger operation at the time of valve opening and valve closing is made gentle so that vibration noise due to pulsation of fluid is not generated. [Structure] A valve body 4 having a valve port 3 provided in the middle of a flow path of an inlet passage 1 and an outlet passage 2, a cylinder cylinder 6 opening to a valve port portion provided in the valve body 4, and a valve port 3 contacting A plunger 7 that has a valve portion 10 that is separated and is inserted so as to be movable in the cylinder cylinder 6, an electromagnetic coil 14 that is arranged outside the cylinder cylinder 6, and suction that is fitted to the end of the cylinder cylinder 6. Child 5
In a solenoid valve having a plunger urging spring 8 incorporated between the suction element and the plunger 7, a seal packing 25 that is slidable on the inner peripheral surface of the cylinder cylinder 6 is provided on the plunger 7, and the packing is provided. A notched groove or a small hole that acts as a throttle for fluid flow is formed in the space, and the space partitioned by the packing 25 between the plunger 7 and the suction element 5 is a damper chamber 27.
It is characterized by
Description
【０００１】[0001]
本考案は油用・水用及び空調用冷媒等の管路に接続して使用する電磁弁に関す るものである。 The present invention relates to a solenoid valve that is used by connecting it to a pipeline for oil / water and air-conditioning refrigerants.
【０００２】[0002]
図４に示す従来の電磁弁は、入口通路１と出口通路２の流路途中に弁口３及び 筒体接続口４ａを設けた弁本体４と、この弁本体４の筒体接続口４ａにＯリング １１を介して螺着されるホルダ１５を有し該ホルダ螺着によって前記接続口４ａ に流路直交方向へ突出するように接続された前記弁口部に開口するシリンダ筒６ と、前記弁口３に接離する弁部１０を有し前記シリンダ筒６内に開弁方向及び閉 弁方向に移動できるように挿入されたプランジャ７と、前記シリンダ筒６の外側 に配設される電磁コイル１４と、前記シリンダ筒６の端部に嵌着され前記コイル １４の通電励磁による磁気吸引力で前記プランジャ７を開弁方向に吸引移動させ る吸引子５と、この吸引子５のプランジャ対向端凹部に嵌合保持され前記プラン ジャ７が吸引子５に吸着された時の衝接金属音を防止するスペーサ９と、前記吸 引子５とプランジャ７との間に組込まれ前記コイル１４の消磁時に前記プランジ ャ７を閉弁方向に弾発移動させるプランジャ付勢ばね８とを具備する。 The conventional solenoid valve shown in FIG. 4 has a valve body 4 provided with a valve port 3 and a tubular body connecting port 4a in the middle of the flow passages of the inlet passage 1 and the outlet passage 2, and a tubular body connecting port 4a of the valve body 4. A cylinder tube 6 having a holder 15 screwed through an O-ring 11 and connected to the connection port 4a so as to project in the direction orthogonal to the flow path by screwing the holder; A plunger 7 having a valve portion 10 that comes into contact with and separates from a valve port 3 and is inserted into the cylinder cylinder 6 so as to be movable in a valve opening direction and a valve closing direction, and an electromagnetic wave arranged outside the cylinder cylinder 6. A coil 14, a suction element 5 which is fitted to an end portion of the cylinder tube 6 and moves the plunger 7 in the valve opening direction by a magnetic attraction force generated by energization of the coil 14, and the suction element 5 faces the plunger. The plunger 7 is fitted and held in the end recess and the plunger 7 is a suction element. A spacer 9 for preventing a collision metal noise when it is adsorbed on the plunger, and a plunger which is incorporated between the attractor 5 and the plunger 7 to elastically move the plunger 7 in the valve closing direction when the coil 14 is demagnetized. And a biasing spring 8.
【０００３】 前記ばね８はプランジャ７の吸引子対向端の有底孔に嵌装され該孔底部と前記 スペーサ９とに両端が支持される圧縮スプリングであって、該ばね８が内挿され る前記プランジャ７の有底孔にはプランジャ外周部から穿設した均圧孔７ａが開 設されている。前記弁部１０はプランジャ７と別体の弁で構成され、該弁をプラ ンジャ端の凹所に嵌合し、この凹所周縁部のワッシャ１２を介したカシメ付けに より止着されている。The spring 8 is a compression spring that is fitted into a bottomed hole at the end of the plunger 7 facing the suction element, and has both ends supported by the bottom of the hole and the spacer 9, and the spring 8 is inserted therein. The bottomed hole of the plunger 7 is provided with a pressure equalizing hole 7a formed from the outer peripheral portion of the plunger. The valve portion 10 is composed of a valve separate from the plunger 7, and the valve portion 10 is fitted into a recess at the end of the plunger and fixed by caulking with a washer 12 at the peripheral edge of the recess. .
【０００４】 前記コイル１４はハウジング１３で囲まれており、このハウジング１３は前記 吸引子５にねじ１７等で固定されるが、このハウジング１３と前記ホルダ１５と の間にはパッキン１６が介装されている。The coil 14 is surrounded by a housing 13. The housing 13 is fixed to the suction element 5 with a screw 17 or the like. A packing 16 is interposed between the housing 13 and the holder 15. Has been done.
【０００５】 而して、前記構成の電磁弁は、電磁コイル１４に電源を通電すると磁気回路が 構成され、プランジャ７はばね８、プランジャ７の自重、入口通路１と出口通路 ２に加わる流体の圧力差、弁口３の断面積（受圧面積荷重）などに抗して吸引子 ５に吸着され、弁口３は開弁状態となり、流体は入口通路１側から出口通路２側 へと流れる。In the solenoid valve having the above-described structure, a magnetic circuit is formed when the electromagnetic coil 14 is energized, and the plunger 7 has a spring 8, the weight of the plunger 7, the fluid added to the inlet passage 1 and the outlet passage 2. It is adsorbed by the suction element 5 against the pressure difference, the cross-sectional area (pressure receiving area load) of the valve opening 3, the valve opening 3 is opened, and the fluid flows from the inlet passage 1 side to the outlet passage 2 side.
【０００６】 また、電磁コイル１４の電源が遮断されると、プランジャ７はばね８の付勢力 とプランジャ７の自重により吸引子５から離れ、閉弁方向に移動して弁口３を閉 塞する。When the power of the electromagnetic coil 14 is cut off, the plunger 7 is separated from the suction element 5 by the urging force of the spring 8 and the weight of the plunger 7, and moves in the valve closing direction to close the valve opening 3. .
【０００７】[0007]
前記従来の電磁弁は、その開弁動作及び閉弁動作が瞬時に行われるもので、緩 やかに開閉動作させることはできないものであった。 例えば、図５に示すカーエアコン用冷凍サイクルのように、前席と後席及び冷 蔵庫用にそれぞれ冷媒蒸発器２０ａ，２０ｂ，２０ｃが配設されていて、例えば 後席に乗員がいない場合は、後席用冷媒蒸発器２０ｂの冷媒入口側に配設した電 磁弁１８ｂを閉じて、冷房出力の無駄をなくしている。 In the conventional solenoid valve, the valve opening operation and the valve closing operation are instantaneously performed, and the opening / closing operation cannot be performed gently. For example, when the refrigerant evaporators 20a, 20b, 20c are provided for the front seats, the rear seats, and the refrigerator as in the car air-conditioner refrigeration cycle shown in FIG. 5, and there are no passengers in the rear seats, for example. Closes the electromagnetic valve 18b arranged on the refrigerant inlet side of the rear seat refrigerant evaporator 20b to eliminate waste of cooling output.
【０００８】 また、前席用冷媒蒸発器２０ａ及び冷蔵庫用冷媒蒸発器２０ｃの冷媒入口側に もそれぞれ電磁弁１８ａ，１８ｃが配設されていて、冷房出力の効率を計るため 必要に応じ開弁・閉弁している。なお、図５に示す符号１９ａ，１９ｂ，１９ｃ は膨脹弁、２１は凝縮器、２２は圧縮器、２３は受液器、２４はレシーバータン クである。In addition, solenoid valves 18a and 18c are provided on the refrigerant inlet sides of the front seat refrigerant evaporator 20a and the refrigerator refrigerant evaporator 20c, respectively, and are opened as necessary to measure the efficiency of the cooling output.・ The valve is closed. Reference numerals 19a, 19b and 19c shown in FIG. 5 are expansion valves, 21 is a condenser, 22 is a compressor, 23 is a liquid receiver, and 24 is a receiver tank.
【０００９】 ところが、前記冷凍サイクルでは、それぞれの冷媒蒸発器２０ａ〜２０ｃの入 口側電磁弁１８ａ〜１８ｃを開弁して冷房運転させる時、各電磁弁が急に開弁す ると、電磁弁入口側の高圧液冷媒が膨脹弁１９ａ〜１９ｃを経て冷媒蒸発器２０ ａ〜２０ｃの低圧ガス冷媒に急激に放出されるため、流体（冷媒）の脈動と異常 圧力変化による振動騒音（空砲を撃ったような騒音）が配管部に発生し、車室の 静粛性を損うという問題があった。However, in the refrigeration cycle, when the inlet side solenoid valves 18a to 18c of the respective refrigerant evaporators 20a to 20c are opened to perform the cooling operation, when the solenoid valves suddenly open, Since the high-pressure liquid refrigerant on the valve inlet side is rapidly released to the low-pressure gas refrigerant of the refrigerant evaporators 20a to 20c via the expansion valves 19a to 19c, pulsation of fluid (refrigerant) and vibration noise due to abnormal pressure change (air gun There was a problem that noise (like a shot) was generated in the piping section, and the quietness of the passenger compartment was impaired.
【００１０】 また、冷房運転を停止する時、電磁弁１８ａ〜１８ｃが急に閉じると、凝縮器 ２１から受液器２３及び膨脹弁１９ａ〜１９ｃを経て冷媒蒸発器２０ａ〜２０ｃ に向う冷媒の流れが急にせき止められるので、冷媒の脈動（水撃作用）による振 動騒音が配管部に発生し、車室の静粛性を損うという問題があった。When the electromagnetic valves 18a to 18c are suddenly closed when the cooling operation is stopped, the flow of the refrigerant from the condenser 21 to the refrigerant evaporators 20a to 20c via the liquid receiver 23 and the expansion valves 19a to 19c. However, there is a problem that vibration noise due to the pulsation of the refrigerant (water hammer effect) is generated in the piping section, and the quietness of the vehicle compartment is impaired.
【００１１】 これらの問題は、図４に示す従来の電磁弁において、電磁コイル１４に電源を 通電すると、プランジャ７が開弁方向に瞬時に移動して開弁し、電源を切るとプ ランジャ７が閉弁方向に瞬時に移動して閉弁するために発生するものであった。These problems are caused in the conventional solenoid valve shown in FIG. 4, when the electromagnetic coil 14 is energized by a power source, the plunger 7 instantaneously moves in the valve opening direction to open the valve, and when the power source is turned off, the plunger 7 is moved. Occurs because the valve instantly moves in the valve closing direction to close the valve.
【００１２】 本考案は前記従来の問題を解消するために案出されたもので、その目的は開弁 時及び閉弁時のプランジャ動作を緩やかにして、流体の脈動等による振動騒音が 発生しないように改良した電磁弁を提供することにある。The present invention was devised in order to solve the above-mentioned conventional problems, and its purpose is to slow down the plunger operation at the time of opening and closing the valve so that vibration noise due to pulsation of fluid etc. does not occur. It is to provide an improved solenoid valve.
【００１３】[0013]
前記の目的を達成するために、本考案は入口通路１と出口通路２の流路途中に 弁口３を設けた弁本体４と、この弁本体４に設けられた前記弁口部に開口するシ リンダ筒６と、前記弁口３に接離する弁部１０を有し前記シリンダ筒６内に開弁 方向及び閉弁方向に移動できるように挿入されたプランジャ７と、前記シリンダ 筒６の外側に配設される電磁コイル１４及び前記シリンダ筒６の端部に嵌着され 前記コイル１４の通電励磁による磁気吸引力で前記プランジャ７を開弁方向に吸 引移動させる吸引子５と、この吸引子５と前記プランジャ７との間に組込まれ前 記コイル１４の消磁時に前記プランジャ７を閉弁方向に弾発移動させるプランジ ャ付勢ばね８とを具備する電磁弁において、前記プランジャ７に前記シリンダ筒 ６の内周面を摺動可能なシールパッキン２５を設け、このシールパッキン２５に 流体流通の絞り作用をなす切欠溝２８又は小孔２８ａを形成して、前記プランジ ャ７と吸引子５間の前記パッキン２５で仕切られた空間をプランジャ動作を緩や かにさせるダンパー室２７としたことを特徴とする。 In order to achieve the above-mentioned object, the present invention has a valve body 4 provided with a valve opening 3 in the middle of a flow path of an inlet passage 1 and an outlet passage 2 and an opening at the valve opening portion provided in the valve body 4. The cylinder cylinder 6 includes a cylinder cylinder 6, a plunger 7 that has a valve portion 10 that contacts and separates from the valve port 3, and is inserted into the cylinder cylinder 6 so as to be movable in a valve opening direction and a valve closing direction. An electromagnetic coil 14 disposed on the outside and an attractor 5 which is fitted to the end of the cylinder tube 6 and which attracts and moves the plunger 7 in the valve opening direction by a magnetic attraction force generated by energization of the coil 14. A solenoid valve having a plunger urging spring 8 incorporated between the suction element 5 and the plunger 7 for elastically moving the plunger 7 in the valve closing direction when the coil 14 is demagnetized. Slide the inner peripheral surface of the cylinder tube 6 A seal packing 25 that can be used is provided, and a notch groove 28 or a small hole 28a that acts as a throttle for fluid flow is formed in the seal packing 25, and a space partitioned by the packing 25 between the plunger 7 and the suction element 5. Is a damper chamber 27 for slowing the plunger movement.
【００１４】[0014]
前記構成の電磁弁によれば、開弁時（電磁コイル１４の通電励磁によりプラン ジャ７が吸引子５に吸引され、弁口３が開く時）に、シールパッキン２５で形成 されたダンパー室２７内の流入流体が絞り作用のある切欠溝２８又は小孔２８ａ を通して徐々に排出されるので、前記プランジャ７の開弁動作を緩やかに行い、 弁口３の通路面積を徐々に開き、入口通路１から出口通路２へ向う流体の流れを 緩やかにすることができ、これにより流体の脈動が抑えられ、異常振動騒音の発 生が防止される。 According to the solenoid valve having the above configuration, when the valve is opened (when the electromagnetic coil 14 is energized and excited, the plunger 7 is attracted to the suction element 5 and the valve port 3 is opened), the damper chamber 27 formed by the seal packing 25 is formed. Since the inflowing fluid in the inside is gradually discharged through the notch groove 28 or the small hole 28a having a throttling action, the valve opening operation of the plunger 7 is gently performed, the passage area of the valve opening 3 is gradually opened, and the inlet passage 1 The flow of the fluid from the outlet passage 2 to the outlet passage 2 can be slowed down, which suppresses the pulsation of the fluid and prevents the generation of abnormal vibration noise.
【００１５】 また、閉弁時（電磁コイル１４が消磁され、プランジャ７がばね８の付勢力等 で閉弁方向に移動して、弁口３が閉じられる時）に、流路側の流体が前記パッキ ン２５の絞り作用のある切欠溝２８又は小孔２８ａを通してダンパー室２７内に 徐々に流入されるので、前記プランジャ７の閉弁動作を緩やかに行い、弁口３の 通路面積を徐々に閉じ、入口通路１から出口通路２へ向う流体の流れを緩やかに 遮断することができ、これにより流体の脈動が抑えられ、異常振動騒音の発生が 防止される。Further, when the valve is closed (when the electromagnetic coil 14 is demagnetized and the plunger 7 is moved in the valve closing direction by the urging force of the spring 8 or the like to close the valve port 3), the fluid on the flow path side is Since it gradually flows into the damper chamber 27 through the cutout groove 28 or the small hole 28a having the throttling action of the packing 25, the valve closing operation of the plunger 7 is gently performed to gradually close the passage area of the valve opening 3. The flow of the fluid from the inlet passage 1 to the outlet passage 2 can be gently cut off, which suppresses the pulsation of the fluid and prevents the generation of abnormal vibration noise.
【００１６】[0016]
以下、本考案の一実施例による電磁弁の構造を図１乃至図３に従い具体的に説 明する。 図中４は入口通路１と出口通路２の流路途中に弁口３及び筒体接続口４ａを設 けた弁本体、６は前記弁口部に開口するシリンダ筒で、このシリンダ筒６は弁本 体４の筒体接続口４ａにＯリング１１を介して螺着されるホルダ１５を有し、該 ホルダ螺着によって前記接続口４ａに流路直交方向へ突出するように接続されて いる。 Hereinafter, a structure of a solenoid valve according to an embodiment of the present invention will be described in detail with reference to FIGS. In the figure, 4 is a valve body having a valve port 3 and a tubular body connecting port 4a in the middle of the flow passages of the inlet passage 1 and the outlet passage 2, and 6 is a cylinder barrel that opens at the valve mouth portion. A holder 15 is screwed to the cylindrical body connection port 4a of the main body 4 via an O-ring 11, and is connected to the connection port 4a so as to project in the direction orthogonal to the flow path by the holder screwing.
【００１７】 ７は前記シリンダ筒６内に開弁方向及び閉弁方向に移動できるように挿入され たプランジャで、前記弁口３に接離する弁部１０を有し、この弁部１０はプラン ジャ７と別体の弁をプランジャ端の凹所に嵌合し、該凹所周縁部のワッシャ１２ を介したカシメ付けにより止着されている（この場合には凹所周縁部に弁嵌合部 の流入流体を外周側に流出させるガス抜き孔７ｃが設けられる）が、前記プラン ジャ７の弁口対向端部に前記弁部１０を一体的に設けることも可能である。Reference numeral 7 denotes a plunger inserted in the cylinder cylinder 6 so as to be movable in a valve opening direction and a valve closing direction, and has a valve portion 10 that comes into contact with and separates from the valve opening 3. A valve separate from the jar 7 is fitted in the recess at the end of the plunger, and is fixed by caulking via the washer 12 at the peripheral edge of the recess (in this case, the valve is fitted at the peripheral edge of the recess). However, it is also possible to integrally provide the valve portion 10 at the end portion of the plunger 7 which faces the valve opening.
【００１８】 １４は前記シリンダ筒６の外側に配設される電磁コイル、５は前記シリンダ筒 ６の端部に嵌着され前記コイル１４の通電励磁による磁気吸引力で前記プランジ ャ７を開弁方向に吸引移動させる吸引子で、この吸引子５のプランジャ対向端凹 部には前記プランジャ７が吸引子５に吸着された時の衝接金属音を防止するスペ ーサ９が嵌合保持されている。なお、前記コイル１４はハウジング１３で囲まれ ており、このハウジング１３は前記吸引子５にねじ１７等で固定されるが、この ハウジング１３と前記ホルダ１５との間にはパッキン１６が介装される。Reference numeral 14 is an electromagnetic coil arranged outside the cylinder cylinder 6, and 5 is fitted to an end of the cylinder cylinder 6, and the plunger 7 is opened by a magnetic attraction force generated by energization of the coil 14. A suction element for moving the suction element 5 in the direction, and a spacer 9 for preventing a collision metal noise when the plunger 7 is adsorbed by the suction element 5 is fitted and held in a concave portion of the suction element 5 facing the plunger. ing. The coil 14 is surrounded by a housing 13. The housing 13 is fixed to the suction element 5 with a screw 17 or the like. A packing 16 is interposed between the housing 13 and the holder 15. It
【００１９】 ８は前記吸引子５とプランジャ７との間に組込まれ前記コイル１４の消磁時に 前記プランジャ７を閉弁方向に弾発移動させるプランジャ付勢ばねで、このプラ ンジャ付勢ばね８はプランジャ７の吸引子対向端の有底孔に嵌装され該孔底部と 前記スペーサ９とに両端が支持される圧縮スプリングであって、該ばね８が内挿 される前記プランジャ７の有底孔にはプランジャ外周部から穿設した均圧孔７ａ が開設されている。Reference numeral 8 denotes a plunger urging spring which is incorporated between the suction element 5 and the plunger 7 and elastically moves the plunger 7 in the valve closing direction when the coil 14 is demagnetized. A compression spring fitted into a bottomed hole at the end of the plunger 7 facing the suction element and having both ends supported by the hole bottom and the spacer 9, the bottomed hole of the plunger 7 into which the spring 8 is inserted. Has a pressure equalizing hole 7a formed from the outer peripheral portion of the plunger.
【００２０】 ２５はシリンダ筒６の内周面を摺動可能な環状のシールパッキンで、前記プラ ンジャ７の弁部側小径部７ｂに嵌合され、該小径部７ｂに円筒状のアウターブッ シュ２６を圧入することにより、パッキン外周縁部がシリンダ筒６の内面に沿っ てブッシュ外囲方向に折曲され、シリンダ筒６の内面に接触するように取付けら れている。Reference numeral 25 denotes an annular seal packing which is slidable on the inner peripheral surface of the cylinder cylinder 6, which is fitted into the valve portion side small diameter portion 7b of the plunger 7 and has a cylindrical outer bushing on the small diameter portion 7b. By press-fitting 26, the outer peripheral edge of the packing is bent along the inner surface of the cylinder cylinder 6 in the bush outer peripheral direction, and is attached so as to contact the inner surface of the cylinder cylinder 6.
【００２１】 このシールパッキン２５には、流体流通の絞り作用をなす図２に示すような切 欠溝２８又は小孔２８ａが形成され、前記プランジャ７と吸引子５間の前記パッ キン２５で仕切られた空間をプランジャ動作を緩やかにさせるダンパー室２７と して形成している。The seal packing 25 is formed with a cutout groove 28 or a small hole 28a that acts as a throttle for fluid flow, and is partitioned by the packing 25 between the plunger 7 and the suction element 5. The space thus formed is formed as a damper chamber 27 for gently moving the plunger.
【００２２】 なお、前記切欠溝２８又は小孔２８ａの数は、プランジャ７開閉弁スピードに 応じ１個又は複数個として、プランジャ動作をコントロールすることができる。 また、前記シールパッキン２５はシリンダ筒６の内周面をできるだけ小さな摺動 抵抗で移動でき、且つシリンダ筒６とのシール性が良い高分子材料、たとえばテ フロン等で構成される。The number of the cutout grooves 28 or the small holes 28a may be one or more depending on the speed of the plunger 7 opening / closing valve to control the plunger operation. The seal packing 25 is made of a polymer material, such as Teflon, which can move on the inner peripheral surface of the cylinder cylinder 6 with a sliding resistance as small as possible and has a good sealing property with the cylinder cylinder 6.
【００２３】 次に、前記実施例の動作について説明する。 今、電磁コイル１４が無通電で入口通路１側に高圧圧力が作用し、出口通路２ 側に低圧圧力が作用している場合、ダンパー室２７は切欠溝２８又は小孔２８ａ を通じて高圧圧力と導通し、高圧圧力状態にある。Next, the operation of the above embodiment will be described. When the electromagnetic coil 14 is not energized and a high pressure is applied to the inlet passage 1 side and a low pressure is applied to the outlet passage 2 side, the damper chamber 27 is electrically connected to the high pressure through the cutout groove 28 or the small hole 28a. However, it is in a high pressure state.
【００２４】 この時、電磁コイル１４に電流が印加されると、ハウジング１３とプランジャ ７及び吸引子５により磁気回路が構成され、プランジャ７はばね８の弾力に抗し 吸引子５側に吸引される。ここで、シールパッキン２５で仕切り形成されたダン パー室２７の圧力変化は、プランジャ７が移動した分の容積が圧縮されたことに なり、その分ダンパー室２７内の圧力が上昇したことに相当する。At this time, when a current is applied to the electromagnetic coil 14, a magnetic circuit is formed by the housing 13, the plunger 7 and the attractor 5, and the plunger 7 is attracted to the attractor 5 side against the elasticity of the spring 8. It Here, the pressure change in the damper chamber 27, which is partitioned by the seal packing 25, corresponds to the fact that the volume moved by the plunger 7 is compressed, and the pressure in the damper chamber 27 increases accordingly. To do.
【００２５】 その関係は図３（Ｂ）に示す状態となり、前記ダンパー室２７の初めの圧力を Ｐ1 、初めの容積をＶ1 、プランジャ７が吸引され移動したある時点のダンパー 室２７の圧力上昇を△Ｐ1 、プランジャ７の移動により圧縮された容積を△Ｖ1 とすると、次の関係式で表される。The relationship becomes the state shown in FIG. 3B, in which the initial pressure of the damper chamber 27 is P1, the initial volume is V1, and the pressure rise of the damper chamber 27 at a certain point when the plunger 7 is sucked and moved. Let ΔP1 be the volume compressed by the movement of the plunger 7, and let ΔV1 be expressed by the following relational expression.
【００２６】 Ｐ1 Ｖ1 ＝（Ｐ1 ＋△Ｐ1 ）（Ｖ1 −△Ｖ1 ） この圧縮容積（圧力上昇△Ｐ1 ）分を、シールパッキン２５に設けた絞り作用 のある切欠溝２８又は小孔２８ａを通じて弁室２９（流体流路）側に徐々に排出 させることにより、プランジャ７を開弁方向へ緩やかに移動させ吸引子５に吸着 させて、弁口３は図３（Ｃ）のように開となる。P1 V1 = (P1 + ΔP1) (V1−ΔV1) This compressed volume (pressure increase ΔP1) is passed through the notch groove 28 or the small hole 28a provided in the seal packing 25 and having a throttling action. By gradually discharging to the 29 (fluid flow path) side, the plunger 7 is gently moved in the valve opening direction and adsorbed to the suction element 5, and the valve port 3 is opened as shown in FIG. 3 (C).
【００２７】 また、電磁コイル１４への電流が遮断されると、プランジャ７はばね８の弾力 により閉弁方向に移動する。この場合、プランジャ７が移動した分、ダンパー室 ２７の内容積が増加し、内圧は低下する。ダンパー室２７の初めの圧力をＰ2 、 その時の容積をＶ2 、プランジャ７がばね８で押されて閉弁方向に移動したある 時点のダンパー室２７の圧力下降を△Ｐ2 、増加した容積を△Ｖ2 とすると、 Ｐ2 Ｖ2 ＝（Ｐ2 −△Ｐ2 ）（Ｖ2 ＋△Ｖ2 ）となる。When the electric current to the electromagnetic coil 14 is cut off, the plunger 7 moves in the valve closing direction by the elastic force of the spring 8. In this case, the internal volume of the damper chamber 27 increases and the internal pressure decreases as much as the plunger 7 moves. The initial pressure in the damper chamber 27 is P2, the volume at that time is V2, the pressure drop in the damper chamber 27 at a certain point when the plunger 7 is pushed by the spring 8 and moved in the valve closing direction is ΔP2, and the increased volume is ΔV2. Then, P2 V2 = (P2-ΔP2) (V2 + ΔV2).
【００２８】 この増加容積（圧力下降△Ｐ2 ）分に対応する流路側流体を、シールパッキン ２５に設けた絞り作用のある切欠溝２８又は小孔２８ａを通じてダンパー室２７ 内に図３（Ｄ）の如く徐々に供給（流入）させることにより、プランジャ７を閉 弁方向へ緩やかに移動させ、弁口３を最終的に図３（Ａ）の如く閉塞する。The flow-path-side fluid corresponding to this increased volume (pressure drop ΔP 2) is introduced into the damper chamber 27 through the notch groove 28 or the small hole 28 a provided in the seal packing 25 and having a throttling action, as shown in FIG. By gradually supplying (inflowing) as described above, the plunger 7 is gently moved in the valve closing direction, and the valve opening 3 is finally closed as shown in FIG. 3 (A).
【００２９】 なお、前記切欠溝２８又は小孔２８ａの寸法は、入口側の圧力、出口側の圧力 及び電磁コイル１４への印加電圧、流体の種類など、どの使用状態においてもプ ランジャ７の開閉弁が、ある一定時間内で移動可能なように設計されている。The size of the cutout groove 28 or the small hole 28a is such that the plunger 7 can be opened and closed in any usage condition, such as the pressure on the inlet side, the pressure on the outlet side, the voltage applied to the electromagnetic coil 14, the type of fluid, and the like. The valve is designed to be movable within a certain period of time.
【００３０】[0030]
本考案の電磁弁は、前述したように前記プランジャ７と吸引子５間のシールパ ッキン２５で仕切られた空間をダンパー室２７としたことにより、プランジャ７ が吸引子５に吸着衝接した時に発生する金属音をスペーサ９なしの場合でも低減 することが可能である。 The solenoid valve of the present invention is generated when the plunger 7 abuts the suction element 5 by suction because the space partitioned by the seal packing 25 between the plunger 7 and the suction element 5 is used as the damper chamber 27 as described above. It is possible to reduce the metallic noise generated even without the spacer 9.
【００３１】 また、液ハンマー音発生による配管の振動を防止できることから、配管の振動 や圧力上昇の繰り返しによる疲労破壊を抑え、機器寿命を長くする効果と、他の 外的防振防音をしなくても済むという効果を奏する。 更に、従来の電磁弁に対し、シールパッキン２５の追加のみで済むことから、 経済的で組立も容易である。Further, since it is possible to prevent the vibration of the pipe due to the sound of the liquid hammer, it is possible to suppress the fatigue damage due to the repeated vibration of the pipe and the increase of the pressure, to prolong the life of the equipment, and to eliminate the need for other external vibration and noise suppression. It has the effect of finishing. Further, since it is only necessary to add the seal packing 25 to the conventional solenoid valve, it is economical and easy to assemble.
【図面の簡単な説明】[Brief description of drawings]
【図１】本考案の一実施例による電磁弁の構成説明図で
あって、同図（Ａ）は電磁弁全体の縦断面図、同図
（Ｂ）は要部の拡大断面図。1A and 1B are configuration explanatory views of a solenoid valve according to an embodiment of the present invention, in which FIG. 1A is a vertical sectional view of the entire solenoid valve, and FIG. 1B is an enlarged sectional view of a main part.
【図２】前記電磁弁に組込まれるプランジャの構成とシ
ールパッキンの構成及び取付方法を説明するための斜視
図。FIG. 2 is a perspective view for explaining a structure of a plunger incorporated in the solenoid valve, a structure of a seal packing, and a mounting method.
【図３】前記電磁弁の作動状態を分図（Ａ）（Ｂ）
（Ｃ）（Ｄ）として示した要部の作用説明図。FIG. 3 is a diagram showing the operating state of the solenoid valve (A) and (B).
(C) The action explanatory drawing of the principal part shown as (D).
【図４】従来の電磁弁を示す縦断面図。FIG. 4 is a vertical sectional view showing a conventional solenoid valve.
【図５】従来の電磁弁を組込んだカーエアコン用冷凍サ
イクルの回路図。FIG. 5 is a circuit diagram of a refrigeration cycle for a car air conditioner incorporating a conventional solenoid valve.
１…入口通路、２…出口通路、３…弁口、４…弁本体、
５…吸引子、６…シリンダ筒、７…プランジャ、８…プ
ランジャ付勢ばね、９…スペーサ、１０…弁部、１３…
ハウジング、１４…電磁コイル、１５…ホルダ、２５…
シールパッキン、２６…アウターブッシュ、２７…ダン
パー室、２８…シールパッキンの切欠溝、２８ａ…シー
ルパッキンの小孔。1 ... inlet passage, 2 ... outlet passage, 3 ... valve opening, 4 ... valve body,
5 ... Suction element, 6 ... Cylinder tube, 7 ... Plunger, 8 ... Plunger biasing spring, 9 ... Spacer, 10 ... Valve part, 13 ...
Housing, 14 ... Electromagnetic coil, 15 ... Holder, 25 ...
Seal packing, 26 ... Outer bush, 27 ... Damper chamber, 28 ... Notch groove of seal packing, 28a ... Small hole of seal packing.
Claims (1)
設けた弁本体と、この弁本体に設けられた前記弁口部に
開口するシリンダ筒と、前記弁口に接離する弁部を有し
前記シリンダ筒内に開弁方向及び閉弁方向に移動できる
ように挿入されたプランジャと、前記シリンダ筒の外側
に配設される電磁コイル及び前記シリンダ筒の端部に嵌
着され前記コイルの通電励磁による磁気吸引力で前記プ
ランジャを開弁方向に吸引移動させる吸引子と、この吸
引子と前記プランジャとの間に組込まれ前記コイルの消
磁時に前記プランジャを閉弁方向に弾発移動させるプラ
ンジャ付勢ばねとを具備する電磁弁において、前記プラ
ンジャに前記シリンダ筒の内周面を摺動可能なシールパ
ッキンを設け、このシールパッキンに流体流通の絞り作
用をなす切欠溝又は小孔を形成して、前記プランジャと
吸引子間の前記パッキンで仕切られた空間をプランジャ
動作を緩やかにさせるダンパー室としたことを特徴とす
る電磁弁。1. A valve main body having a valve opening in the middle of the flow passages of the inlet passage and the outlet passage, a cylinder cylinder opening at the valve opening portion provided in the valve main body, and a valve coming in and out of contact with the valve opening. A plunger inserted into the cylinder cylinder so as to be movable in the valve opening direction and the valve closing direction, an electromagnetic coil arranged outside the cylinder cylinder, and an end portion of the cylinder cylinder. An attractor that attracts and moves the plunger in the valve opening direction by a magnetic attraction force generated by energization of the coil, and a plunger that is incorporated between the attractor and the plunger and repels the plunger in the valve closing direction when the coil is demagnetized. In a solenoid valve having a plunger urging spring to be moved, a seal packing that is slidable on the inner peripheral surface of the cylinder cylinder is provided on the plunger, and a notch groove or a groove that acts as a throttle for fluid flow is provided on the seal packing. An electromagnetic valve, wherein a small hole is formed, and a space partitioned by the packing between the plunger and the suction element is used as a damper chamber for slowing the plunger operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6600293U JPH0735874U (en) | 1993-12-10 | 1993-12-10 | solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6600293U JPH0735874U (en) | 1993-12-10 | 1993-12-10 | solenoid valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0735874U true JPH0735874U (en) | 1995-07-04 |
Family
ID=13303315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6600293U Pending JPH0735874U (en) | 1993-12-10 | 1993-12-10 | solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0735874U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002147639A (en) * | 2000-11-14 | 2002-05-22 | Aisin Seiki Co Ltd | Solenoid valve |
| JP2006097727A (en) * | 2004-09-28 | 2006-04-13 | Keihin Corp | Linear solenoid valve |
| WO2012016741A1 (en) * | 2010-08-04 | 2012-02-09 | Robert Bosch Gmbh | Magnet valve, and driver assistance device comprising such a magnet valve |
| WO2020158729A1 (en) * | 2019-01-31 | 2020-08-06 | 川崎重工業株式会社 | Electromagnetic gas valve |
| KR20210096263A (en) * | 2019-01-31 | 2021-08-04 | 카와사키 주코교 카부시키가이샤 | solenoid valve for gas |
-
1993
- 1993-12-10 JP JP6600293U patent/JPH0735874U/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002147639A (en) * | 2000-11-14 | 2002-05-22 | Aisin Seiki Co Ltd | Solenoid valve |
| JP4706099B2 (en) * | 2000-11-14 | 2011-06-22 | 株式会社アドヴィックス | Solenoid open / close valve |
| JP2006097727A (en) * | 2004-09-28 | 2006-04-13 | Keihin Corp | Linear solenoid valve |
| WO2012016741A1 (en) * | 2010-08-04 | 2012-02-09 | Robert Bosch Gmbh | Magnet valve, and driver assistance device comprising such a magnet valve |
| CN103052547A (en) * | 2010-08-04 | 2013-04-17 | 罗伯特·博世有限公司 | Magnet valve, and driver assistance device comprising such magnet valve |
| WO2020158729A1 (en) * | 2019-01-31 | 2020-08-06 | 川崎重工業株式会社 | Electromagnetic gas valve |
| JP2020122548A (en) * | 2019-01-31 | 2020-08-13 | 川崎重工業株式会社 | Gas solenoid valve |
| KR20210096263A (en) * | 2019-01-31 | 2021-08-04 | 카와사키 주코교 카부시키가이샤 | solenoid valve for gas |
| KR20210096264A (en) * | 2019-01-31 | 2021-08-04 | 카와사키 주코교 카부시키가이샤 | solenoid valve for gas |
| CN113302425A (en) * | 2019-01-31 | 2021-08-24 | 川崎重工业株式会社 | Electromagnetic valve for gas |
| US11754197B2 (en) | 2019-01-31 | 2023-09-12 | Kawasaki Jukogyo Kabushiki Kaisha | Gas solenoid valve |
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