WO1997015771A1 - Electrovanne avec induit de levee - Google Patents

Electrovanne avec induit de levee Download PDF

Info

Publication number
WO1997015771A1
WO1997015771A1 PCT/EP1996/004625 EP9604625W WO9715771A1 WO 1997015771 A1 WO1997015771 A1 WO 1997015771A1 EP 9604625 W EP9604625 W EP 9604625W WO 9715771 A1 WO9715771 A1 WO 9715771A1
Authority
WO
WIPO (PCT)
Prior art keywords
solenoid valve
valve according
bellows
flange
tappet
Prior art date
Application number
PCT/EP1996/004625
Other languages
German (de)
English (en)
Inventor
Werner DÖHLA
Werner Schieweck
Original Assignee
Rapa Rausch & Pausch Elektrotechnische Spezialfabrik Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rapa Rausch & Pausch Elektrotechnische Spezialfabrik Gmbh filed Critical Rapa Rausch & Pausch Elektrotechnische Spezialfabrik Gmbh
Publication of WO1997015771A1 publication Critical patent/WO1997015771A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0672—One-way valve the valve member being a diaphragm
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K41/00—Spindle sealings
    • F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube
    • F16K41/103—Spindle sealings with diaphragm, e.g. shaped as bellows or tube the diaphragm and the closure member being integrated in one member

Definitions

  • the invention relates to a solenoid valve with a lifting armature according to the preamble of the claims, which is particularly suitable for use in medical devices.
  • Two-way valves which switch the flow of aggressive media.
  • a valve chamber is closed off from a magnet actuating a tappet by means of a bellows which has a plurality of folds and also surrounds the tappet.
  • the bellows is provided on the one hand with a disk arranged between the magnetic body and the valve body and on the other hand is firmly connected to a sealing cap.
  • sealing parts made of different materials (bellows and flange made of PTFE, sealing body and O-ring made of elastomer) for keeping aggressive media away from the tappet and sealing to the outside, so that the production of these two-way valves is associated with a considerable effort. There is also a risk of leaks between the parts.
  • the multi-fold bellows must be sufficiently stiff so that under the existing pressure conditions bellows and tappet do not rub against each other when the tappet is moved; but it must also be sufficiently flexible so that the driving force of the plunger is kept sufficiently low.
  • a two-way angle seat valve for regulating the flow of aggressive media is already known, in which a multi-fold bellows is simultaneously designed as a seat seal. To prevent friction between the bellows and the tappet, additional support means must be provided. Apart from the fact that angle valves are not applicable in every case, multiple bellows are more difficult and lengthy to clean or disinfect.
  • the invention is therefore based on the object of providing a solenoid valve with a lifting armature which, compared to the prior art, enables simplification and material savings in manufacture, which permits a reduction in size and with which an increase in cleanliness and process stability in use can be achieved is. According to the invention, this object is achieved by the characterizing features of patent claim 1.
  • the bellows, flange and sealing body do not only consist of one piece, but the flange in the area of the contact surface on the valve body is arranged coaxially to the plunger, partially acting, constricting or assigned pressing means which act together with a sealing ring provided on the edge of the flange.
  • the bellows has only a few folds, preferably only one fold.
  • Natural or synthetic rubber or a rubber-like plastic that is resistant to aggressive media is used as the elastomer.
  • the constricting means can consist in a bulge of the contact surface directed towards the magnetic body, which bulge or only partially covers the contact surface.
  • the support plate In order to absorb the deformation of the sealing ring when the assembly pressure is acting, the support plate has a corresponding free space in the profile.
  • the support plate is advantageously made of sheet metal and clamped between the magnetic body and the valve body.
  • Around the tappet, it has a conical and / or cylindrical connection piece which projects into the valve space and at least supports the first fold of the bellows with its cylindrical part; if the bellows consists of only one fold, only that part of the fold sits on the cylindrical part of the connecting piece, which is adjacent to the support plate and the tappet.
  • the free tappet end advantageously has an enlarged diameter and a tapered rear surface, the bellows having a surface corresponding to the tapered rear surface.
  • the bellows has a smaller wall thickness than that in at least one of its areas, which are concentric with the tappet, in the vicinity of the tappet remaining bellows.
  • the bellows advantageously has a greater wall thickness only in the areas away from the tappet. In any case, complex support means are avoided as well as lengthy and unsafe cleaning processes when changing the flowing media.
  • a narrow ring surface concentric with the tappet serves as the seat for the sealing body.
  • the invention ensures a pressure-independent function that only needs one fold in the bellows and requires little effort to move the tappet, because the fold is essentially made of thin-walled material with low rigidity and also with a tightness at a pressure of 3 bar can be.
  • the magnetic valve according to the invention is particularly suitable for use in dialysis machines.
  • Fig. 1 shows a valve according to the invention with a bellows, which has two folds
  • Fig. 2 shows a valve with a single-bellows and resilient
  • FIG. 3 Clamping between magnetic body and valve body and Fig. 3 is an enlarged section of a valve with a profiled support plate.
  • FIG. 1 shows a magnetic valve 3 consisting of magnetic body 1 and valve body 2, the magnetic body 1 of which has an electrical connector 4.
  • a plunger 11 is rigidly connected, which is surrounded by a flexible bellows 12 made of elastic material, which is designed at the free end of the plunger 11 as a sealing body 13 and at the end facing the magnet 6 as a flange 14 with a sealing ring 15 is made of an elastomer and is pressed against a plate 16.
  • the plunger 11 projects with the bellows 12 surrounding it into a valve chamber 17 of the valve body or valve 2, which has inflow and outflow openings 18 for pressurized, aggressive media, an annular seat 19, manufacturing-related recesses 20 and constrictions 21.
  • the Ventilkö ⁇ er 2 has a contact surface 29 concentric to the axis XX of the entire arrangement, which is inclined with respect to this axis such that the boundary wall of the valve chamber 17 with the contact surface 29 includes an acute angle along a cutting edge concentric to the axis XX or one to the magnetic body 1 directed truncated cone forms.
  • the magnetic body 1 has bendings 22 that are resilient on the valve body side and that can be inserted into the constrictions 21 and ensure a firm contact between the magnetic body 1 and the valve body 2.
  • the bellows 12 has two folds 121, 122, which do not touch the plunger 11 in any position at their locations 24 in the vicinity of the plunger 11 and whose wall thickness is smaller at these locations than at the other locations, particularly at those remote from the plunger 11 lying places.
  • the approaches of the folds on the one hand on the Dichtungsgro ⁇ er 13 and on the other hand on the flange 14 are on a diameter which is greater than the diameter of the plunger 11, so that a friction between the plunger 11 and the bellows 12 obstructing the movement of the plunger 11 and signs of wear do not take place on the bellows 12, which can lead to leaks.
  • the solenoid valve 3 is in the closed position; the connection of the inlet and outlet openings 18 on both sides is interrupted in that the seal body 13 is pressed against the annular seat 19 by the spring 10 acting on the armature 8.
  • a current flows through the coil 5
  • the magnet 6 is excited, pulls the lifting armature 8 against the action of the spring 10 in accordance with the gap 23 and thereby opens the valve 3 so that it is exposed to a medium (liquid, Gas) can be flowed through in a direction of a double arrow 25.
  • Fig. 2 differs from Fig. 1 essentially in that the bellows 12 has only one fold, that the connections of the bellows 12 to the plunger 11 and the plate 16 are designed differently and that electrical leads 26 are guided laterally to the magnetic body 1. Because there is only one fold with a larger fold thickness only in its area 31 which is remote from the plunger 11, the probability of undesired contact between the bellows 12 and the plunger 11 is practically no longer present.
  • the plate 16 is replaced by a disc 34, which is preferably provided with six resilient bends 35, which snap into three recesses 36, 37 on the magnetic body 1 and on the valve body 2; only one bend and associated recess is visible in FIG. 2.
  • a screw connection of both parts can also be provided with the aid of a union nut.
  • a conical contact surface 29 for the flange 14 with the sealing ring 15 is again provided on the valve body 2 facing the magnet body 1.
  • a bend 27 of the plate 16 in the vicinity of the plunger 11 penetrated by it, a frustoconical rear formation 28 of the end 30 of the plunger 11 and a reduction in the diameter of the plunger 11 from the end 30 in the direction of the lifting armature 8, which on its side facing the magnet 6 Side is provided with a buffer ring 32, also prevent the undesired contact of bellows 12 and plunger 11.
  • Fig. 3 similar to Fig. 1, includes a magnetic body 1 in a housing 38, a coil carrier 39, a coil 5, a guide tube 40 for a lifting armature 8 and a plunger 11.
  • a Ventiloir ⁇ er 2 is fixed by a flange 41 connected to the magnetic body 1 and thus simultaneously clamps one end of the guide tube 40 and a sheet metal 42 provided with a profile between the two.
  • the Ventilgro ⁇ er 2 has a valve chamber 17 and, facing the Magnetkö ⁇ er 1, a contact surface 29 which has an annular bulge 43 on the upper boundary edge of the valve chamber 17.
  • the flange 14 which is profiled in the same way as the sheet 42, and the sealing ring 15 of a bellows 12 with only one fold, the greatest thickness of which is in the region 31.
  • the flange 14 has its smallest thickness in profile over the bulge 43.
  • the profile of the sheet metal 42 permits an annular free space 44, which the sealing ring 15 fills when the flange piece 41 is pressed against the valve body 2 and when the two are fastened to one another, that is to say during assembly.
  • the sheet 42 is practically inelastic and consists of 0.3 mm thick steel.
  • the plunger 11 is, similar to the one shown in FIG. 2, firmly connected to the lifting armature 8 and movable with the aid of a magnet 6 against the pressure of the spring 10.
  • the plunger 11 again has a larger diameter at its free end 30 and a frustoconical rear design 28.
  • the bellows 12 surrounds this end 30 with appropriate shaping and is supported with its thin-walled parts 24, which are close to the plunger 11, against the cone surface 28 and the Nozzle 45.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention concerne une électrovanne avec un induit de levée (8) qui est actionnée par l'intermédiaire d'une tige-poussoir, en fonction du passage ou du non passage de courant dans un électro-aimant, la tige-poussoir étant entourée par un soufflet (12) dans l'espace de l'électrovanne. Afin de réduire la complexité technique lors de la production de cette électrovanne et de rendre son utilisation plus économique, le soufflet se présente sous la forme d'une seule pièce constituée d'une part par une bride (14) et d'autre part par un élément d'étanchéité (13). On obtient une étanchéité et une flexibilité suffisantes du soufflet, lequel ne présente de préférence qu'un pli, lorsqu'il est en élastomère.
PCT/EP1996/004625 1995-10-25 1996-10-24 Electrovanne avec induit de levee WO1997015771A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19539742 1995-10-25
DE19539742.8 1995-10-25

Publications (1)

Publication Number Publication Date
WO1997015771A1 true WO1997015771A1 (fr) 1997-05-01

Family

ID=7775749

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/004625 WO1997015771A1 (fr) 1995-10-25 1996-10-24 Electrovanne avec induit de levee

Country Status (1)

Country Link
WO (1) WO1997015771A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0837274A1 (fr) * 1996-10-15 1998-04-22 Automobiles Peugeot Agencement d'électrovanne pourvu d'un dispositif de fixation sur un support et bloc hydraulique équipé d'un tel agencement
WO2000074988A1 (fr) * 1999-06-08 2000-12-14 Continental Teves Ag & Co. Ohg Electrovanne
DE10113316A1 (de) * 2001-03-20 2002-09-26 Wabco Gmbh & Co Ohg Herstellverfahren für Magnetanker
WO2005102807A1 (fr) * 2004-04-20 2005-11-03 Rausch & Pausch Gmbh Electrovanne
WO2015154974A3 (fr) * 2014-04-08 2015-12-10 Fresenius Medical Care Deutschland Gmbh Soupape électromagnétique
CN107208812A (zh) * 2015-01-07 2017-09-26 大陆-特韦斯贸易合伙股份公司及两合公司 阀座支承件
DE102019102445A1 (de) * 2019-01-31 2020-08-06 Gemü Gebr. Müller Apparatebau Gmbh & Co. Kommanditgesellschaft Absperrmittel

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT180785B (de) * 1952-07-17 1955-01-10 Hans Ing Aue Absperrventil
FR1539237A (fr) * 1969-06-26 1968-09-13 Soufflet en matière plastique destiné à servir de barrière déformable à un fluide sous pression
US3812398A (en) * 1972-11-10 1974-05-21 Controls Co Of America Drain valve
FR2465939A1 (fr) * 1979-09-26 1981-03-27 Realisa Automatismes Et Procede de dosage de liquides et dispositif pour sa mise en oeuvre
JPS56138580A (en) * 1980-03-28 1981-10-29 Nikkiso Co Ltd Solenoid valve
DE3215799A1 (de) * 1982-04-28 1983-11-03 Leonhard Schleicher Südmo-Armaturenfabrik GmbH, 7081 Riesbürg Aseptisches ventil
US4453700A (en) * 1981-02-05 1984-06-12 Nippondenso Co., Ltd. Fluid control valve assembly
EP0508658A2 (fr) * 1991-03-27 1992-10-14 Asepco Construction de soupape aseptique

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT180785B (de) * 1952-07-17 1955-01-10 Hans Ing Aue Absperrventil
FR1539237A (fr) * 1969-06-26 1968-09-13 Soufflet en matière plastique destiné à servir de barrière déformable à un fluide sous pression
US3812398A (en) * 1972-11-10 1974-05-21 Controls Co Of America Drain valve
FR2465939A1 (fr) * 1979-09-26 1981-03-27 Realisa Automatismes Et Procede de dosage de liquides et dispositif pour sa mise en oeuvre
JPS56138580A (en) * 1980-03-28 1981-10-29 Nikkiso Co Ltd Solenoid valve
US4453700A (en) * 1981-02-05 1984-06-12 Nippondenso Co., Ltd. Fluid control valve assembly
DE3215799A1 (de) * 1982-04-28 1983-11-03 Leonhard Schleicher Südmo-Armaturenfabrik GmbH, 7081 Riesbürg Aseptisches ventil
EP0508658A2 (fr) * 1991-03-27 1992-10-14 Asepco Construction de soupape aseptique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 020 (M - 110) 5 February 1982 (1982-02-05) *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0837274A1 (fr) * 1996-10-15 1998-04-22 Automobiles Peugeot Agencement d'électrovanne pourvu d'un dispositif de fixation sur un support et bloc hydraulique équipé d'un tel agencement
WO2000074988A1 (fr) * 1999-06-08 2000-12-14 Continental Teves Ag & Co. Ohg Electrovanne
DE10113316A1 (de) * 2001-03-20 2002-09-26 Wabco Gmbh & Co Ohg Herstellverfahren für Magnetanker
US7369023B2 (en) 2001-03-20 2008-05-06 Wabco Gmbh & Co., Ohg Method for manufacturing a magnet armature
WO2005102807A1 (fr) * 2004-04-20 2005-11-03 Rausch & Pausch Gmbh Electrovanne
CN106662267A (zh) * 2014-04-08 2017-05-10 弗雷森纽斯医疗护理德国有限责任公司 电磁操纵的阀
WO2015154974A3 (fr) * 2014-04-08 2015-12-10 Fresenius Medical Care Deutschland Gmbh Soupape électromagnétique
JP2017518472A (ja) * 2014-04-08 2017-07-06 フレゼニウス メディカル ケア ドイッチェランド ゲゼルシャフト ミット ベシュレンクテル ハフツング 電磁的操作弁
US20170211718A1 (en) * 2014-04-08 2017-07-27 Fresenius Medical Care Deutschland Gmbh Electromagnetically operated valve
US10288188B2 (en) 2014-04-08 2019-05-14 Fresenius Medical Care Deutschland Gmbh Electromagnetically operated valve
CN106662267B (zh) * 2014-04-08 2020-08-04 弗雷森纽斯医疗护理德国有限责任公司 电磁操纵的阀
CN107208812A (zh) * 2015-01-07 2017-09-26 大陆-特韦斯贸易合伙股份公司及两合公司 阀座支承件
US10378668B2 (en) 2015-01-07 2019-08-13 Continental Teves Ag & Co. Ohg Valve seat support
CN107208812B (zh) * 2015-01-07 2021-07-27 大陆-特韦斯贸易合伙股份公司及两合公司 阀座支承件
DE102019102445A1 (de) * 2019-01-31 2020-08-06 Gemü Gebr. Müller Apparatebau Gmbh & Co. Kommanditgesellschaft Absperrmittel

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