EP0611889B1 - Plate valve in particular for compressor - Google Patents

Plate valve in particular for compressor Download PDF

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Publication number
EP0611889B1
EP0611889B1 EP94890035A EP94890035A EP0611889B1 EP 0611889 B1 EP0611889 B1 EP 0611889B1 EP 94890035 A EP94890035 A EP 94890035A EP 94890035 A EP94890035 A EP 94890035A EP 0611889 B1 EP0611889 B1 EP 0611889B1
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EP
European Patent Office
Prior art keywords
catcher
hub
plate
auxiliary plate
valve seat
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.)
Expired - Lifetime
Application number
EP94890035A
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German (de)
French (fr)
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EP0611889A1 (en
Inventor
Gerald Ing. Pavlu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoerbiger Ventilwerke GmbH and Co KG
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Hoerbiger Ventilwerke GmbH and Co KG
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Publication of EP0611889A1 publication Critical patent/EP0611889A1/en
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Publication of EP0611889B1 publication Critical patent/EP0611889B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1053—Adaptations or arrangements of distribution members the members being Hoerbigen valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members

Definitions

  • the invention relates to a plate valve, in particular for compressors, with a valve seat, a catcher arranged at a distance therefrom and plates arranged between the valve seat and the catcher, etc. a closure plate controlling flow channels of the valve seat and at least one auxiliary plate associated with the closure plate, e.g. Spring, damper or handlebar plate, which is fixed relative to the catcher.
  • a plate valve in particular for compressors, with a valve seat, a catcher arranged at a distance therefrom and plates arranged between the valve seat and the catcher, etc.
  • a closure plate controlling flow channels of the valve seat and at least one auxiliary plate associated with the closure plate, e.g. Spring, damper or handlebar plate, which is fixed relative to the catcher.
  • Various types of plate valves of this type are known (see e.g. GB-A-1 017 035).
  • the closure plate When working with such valves, the closure plate carries out a lifting movement between the valve seat and the catcher, alternately closing and releasing the flow channels of the valve seat.
  • the auxiliary plates have the task of resiliently loading the closure plate against the valve seat so that the valve is closed even when depressurized, to dampen the impact of the closure plate on the catcher and, if necessary, to guide it during the stroke movement.
  • the auxiliary plates in the known designs are generally fixed in the valve, usually clamped with their hub located in the center between the catcher and a spacer ring provided between the catcher and the valve seat. Versions are also known in which the auxiliary plates are simply screwed onto the catcher radially outside the hub.
  • the fixing of the auxiliary plates in the valve is relatively complex.
  • the use of a spacer ring means a separate component, which not only makes the valve more expensive, but also complicates assembly.
  • the space requirement of a spacer or guide ring in the center of the valve is relatively large, as a result of which its possible passage cross section is reduced.
  • the effort is even greater because several screws must be provided and installed, which can also be an obstacle in the way of catching the closure plate on the catcher.
  • the invention has for its object to improve and simplify the previously known plate valves of the type mentioned so that the auxiliary plates provided can be easily and quickly attached to the valve using only a few components.
  • this object is achieved in that the catcher projects with a catcher hub against the valve seat, which is provided with at least one radial incision, for example a groove, that the auxiliary plate has a recess in its center which is larger than the cross section of the Catcher hub is and has at least two retaining arms projecting over its inner edge, and that the retaining arms by placing the auxiliary plate with its central recess on the catcher hub and a relative movement between the catcher and auxiliary plate, for example by twisting or moving the auxiliary plate in its plane, into an incision in the Catcher hub can be snapped into place.
  • the catcher is thus provided in the valve design according to the invention with a hub, which can be connected in one piece with it, so that no single spacer or guide ring between the valve seat and catcher is required.
  • the correspondingly designed auxiliary plate only needs to be placed on this catcher hub during assembly and anchored by a relative movement in order to achieve a secure fixation in the valve and to enable a smooth movement of this plate.
  • In the catcher hub only one or more incisions corresponding to the number of auxiliary plates to be accommodated, which are easy to produce, are required.
  • the training according to the invention is thus characterized by simplicity, easy assembly without tools and by few components.
  • the catcher hub is formed with a non-circular cross-section and has flats of circular shape or recesses that run in the axial direction and match the holding arms of the associated auxiliary plate, the auxiliary plate being attachable to the catcher hub in the axial direction and by twisting into the incisions in the catcher hub can be snapped into place.
  • the catcher hub is easy to manufacture because only relatively small flats or recesses are required, which can be easily produced by milling or grinding.
  • the catcher hub has incisions at two diametrically opposite points and the recess arranged in the center of the auxiliary plate fits eccentrically on the catcher hub, the holding arms after the auxiliary plate has been placed on the catcher hub by moving the auxiliary plate in it Plane can be snapped into the incisions in the catcher hub.
  • the catcher hub can maintain its cylindrical cross-section; it only has to be provided with incisions for receiving the holding arms.
  • the recess in the center of the auxiliary plate must, however, be somewhat larger, so that this design also takes up a somewhat larger space overall.
  • the holding arms of the auxiliary plate can be arched at least in their area engaging in the incisions of the catcher hub, preferably with a generatrix running parallel to a radius of the catcher hub, and can snap into the incisions of the catcher hub with elastic prestress.
  • the holding arms are elastically deformed when inserted into the incisions of the catcher hub, so that they springily fill the incisions and are anchored in them without play. The resulting frictional forces prevent the holding arms from being unintentionally released from the incisions and thereby also a disadvantageous loosening of the auxiliary plate fixed in the valve.
  • an improvement of the fixation can further be achieved in that at least one axial bore is provided in the catcher hub, which cuts at least one incision for receiving a holding arm of the auxiliary plate and into which a pin can be inserted, which, after the holding arms have locked in place the associated incision comes into engagement with the holding arm.
  • the holding arms are thus secured in the respective incision of the catcher hub by a simple pin, so that the auxiliary plate can neither disengage from its fixation nor twist.
  • An expedient embodiment consists in the fact that the pins inserted into the axial bores in the area of the incisions of the catcher hub have aligned incisions in the incisions provided therein, into which the holding arms can be inserted, wherein approximately semicircular recesses are provided in the holding arms, into which the Engage the pins by twisting them with their side facing away from the incision. It is not necessary to insert the pins into the catch hub only after the holding arms have been inserted into the catch hub. The incisions in the pins allow the holding arms to be inserted even with the pins already inserted. The final anchoring is then done by simply twisting the pins.
  • the pins can be seated in blind bores which start from the side of the valve seat these are covered to prevent them from falling out and are provided on their end face with an attack profile for a tool, for example with a transverse slot for a screwdriver, for rotation.
  • a variant of the fixation according to the invention is that the pins protrude from the blind holes in the catcher against the valve seat and engage in blind holes provided in the valve seat.
  • these pins also take on the task of positioning the valve seat relative to the catcher plate, which means that additional devices such as pins or markings can be omitted.
  • the pins protruding from the catcher hub are easy to grasp and twist. This makes assembly easier, but additional, if only short, blind holes are required in the valve seat.
  • FIG. 1 shows an axial central section through an exemplary embodiment of the valve according to the invention
  • FIG. 2 also shows an axial central section through the catcher
  • FIG. 3 shows a plan view of the catcher
  • FIG. 4 shows a detail in axial section and on a larger scale
  • 5 shows a section along the line VV in FIG. 4
  • FIG. 6 shows a detail of a further embodiment in the axial central section and on a larger scale
  • FIG. 7 shows a section along the line VII-VII in FIGS. 6 and 8, a cross section through a support arm of an auxiliary plate.
  • the valve according to the invention for example shown, consists of a valve seat 1 and a catcher plate 2, which is held together with the valve seat 1 by a central screw 3.
  • a closure plate 4 which can be made of plastic, for example, and one or more auxiliary plates 5, e.g. Spring, damper or handlebar plates.
  • Through channels 6 are arranged in the valve seat 1 and are controlled by the closure plate 4, and flow channels 7 are provided in the catcher 2.
  • a pin 8 and a catcher hub 9 can still be seen.
  • the catcher 2 has a catcher hub 9 connected to it in one piece, which is provided with an axial bore 10 into which the pin labeled 8 in Fig. 1 can be inserted. 3, two pins 8 can be seen in the catcher hub 9, which are diametrically opposite one another.
  • a ring-shaped incision 11 formed as a groove which is open radially outward is provided in dashed lines and flats 12 of the catcher hub 9 are formed at an angle of approximately 90 ° between the two pins 8, for example by milling or grinding.
  • FIG. 4 and 5 show the more precise design of the valve shown in the area of the catcher hub 9.
  • Fig. 4 the middle part of the valve seat 1 and the catcher 2, the closure plate 4 and two auxiliary plates 5 are shown.
  • the catcher hubs are 9 and two Detect pins 8.
  • the two auxiliary plates 5 protrude with their inner edge into the incision 11 which is provided in the catcher hub 9.
  • the catch hub 9 is also formed with a non-circular cross section.
  • the two flats 12 lie diametrically opposite one another.
  • the auxiliary plate 5 shown is placed on the catcher hub 9 in such a way that it rests on the flats 12 with projecting holding arms 13.
  • the short arms 13 engage in the incisions 11 in the catcher hub 9 and reach the area of the pins 8 when they are rotated by approximately 90 ° a semicircular recess 15 is provided in the middle of the holding arms 13, into which the pins 8 engage.
  • the exemplary embodiment according to FIGS. 6 and 7 differs from the previously described exemplary embodiment mainly in that the auxiliary plate 5 is placed eccentrically on the catcher hub 9, which can also have a circular cross section.
  • Fig. 7 shows that the catcher hub 9 has two incisions 11 at two diametrically opposite points, each of which is penetrated by a pin 8. 6, the pins 8 themselves are likewise provided with incisions 17 which are aligned with the incisions 11 when the pins 8 are inserted.
  • auxiliary plate 5 fits eccentrically on the catcher hub 9 with its recess. It is thus pushed onto the catcher hub 9 in the position shown in FIG. 7, whereupon the auxiliary plate 5 is then shifted in its plane in the direction of the arrow 14, the two holding arms 13 engaging in the incisions 11 of the catcher hub 9 and also the incisions 17 in pins 8. As soon as the holding arms 13 with the semicircular recesses 15 are in the region of the pins 8, they can be rotated by approximately 180 °, the full half of the pins 8 each reaching the region of the semicircular recesses 15. As a result, the auxiliary plates 5 are fixed relative to the catcher hub 9.
  • a transverse slot 18 such as e.g. is shown in Fig. 7, which is intended for receiving a screwdriver.
  • the pins 8, each seated in a blind bore of the catcher hub 9, are covered by the valve seat 1 and thus secured against falling out.
  • the holding arms 13 can also have a slightly curved shape instead of just so that they are resiliently compressed when inserted into the incisions 11 of the catcher hub 9. In this way, the auxiliary plates 5 are held without play. With sufficient spring force, the pins 8 can be omitted for securing.
  • the auxiliary plates 5 can be spring, damper or handlebar plates.
  • the spring plate will be used most often because practically every modern plate valve has springing.
  • Spring plates deformed in other ways are also conceivable, e.g. so-called sinus springs with cylindrical curvature or disc springs. It is also possible to fix different types of plates in the same valve in the manner according to the invention, e.g. Spring and damper plates, possibly at different distances from the catcher.

Description

Die Erfindung bezieht sich auf ein Plattenventil, insbesondere für Verdichter, mit einem Ventilsitz, einem im Abstand von diesem angeordneten Fänger und zwischen dem Ventilsitz und dem Fänger angeordneten Platten, u.zw. einer Durchströmkanäle des Ventilsitzes steuernden Verschlußplatte sowie wenigstens einer der Verschlußplatte zugeordneten Hilfsplatte, z.B. Feder-, Dämpfer- oder Lenkerplatte, die relativ zum Fänger fixiert ist.The invention relates to a plate valve, in particular for compressors, with a valve seat, a catcher arranged at a distance therefrom and plates arranged between the valve seat and the catcher, etc. a closure plate controlling flow channels of the valve seat and at least one auxiliary plate associated with the closure plate, e.g. Spring, damper or handlebar plate, which is fixed relative to the catcher.

Plattenventile dieser Bauart sind in verschiedenen Ausführungen bekannt (siehe z.B. GB-A-1 017 035). Beim Arbeiten solcher Ventile führt die Verschlußplatte eine Hubbewegung zwischen dem Ventilsitz und dem Fänger aus, wobei sie die Durchströmkanäle des Ventilsitzes abwechselnd verschließt und freigibt. Die Hilfsplatten haben die Aufgabe, die Verschlußplatte federnd gegen den Ventilsitz zu belasten, damit das Ventil auch in drucklosem Zustand geschlossen ist, die Aufschläge der Verschlußplatte auf dem Fänger zu dämpfen und sie erforderlichenfalls während der Hubbwegung zu führen.Various types of plate valves of this type are known (see e.g. GB-A-1 017 035). When working with such valves, the closure plate carries out a lifting movement between the valve seat and the catcher, alternately closing and releasing the flow channels of the valve seat. The auxiliary plates have the task of resiliently loading the closure plate against the valve seat so that the valve is closed even when depressurized, to dampen the impact of the closure plate on the catcher and, if necessary, to guide it during the stroke movement.

Um diese Aufgaben richtig ausführen zu können und um Gleitreibungen an Führungsflächen möglichst zu vermeiden, sind die Hilfsplatten bei den bekannten Ausführungen in der Regel im Ventil fixiert, meist mit ihrer im Zentrum gelegenen Nabe zwischen dem Fänger und einem zwischen diesem und dem Ventilsitz vorgesehenen Abstandsring eingespannt. Es sind auch Ausführungen bekannt, bei denen die Hilfsplatten radial außerhalb der Nabe am Fänger einfach angeschraubt sind.In order to be able to carry out these tasks correctly and to avoid sliding friction on guide surfaces as far as possible, the auxiliary plates in the known designs are generally fixed in the valve, usually clamped with their hub located in the center between the catcher and a spacer ring provided between the catcher and the valve seat. Versions are also known in which the auxiliary plates are simply screwed onto the catcher radially outside the hub.

Bei den bekannten Ausführungen ist die Fixierung der Hilfsplatten im Ventil verhältnismäßig aufwendig. Die Verwendung eines Abstandsringes bedeutet einen eigenen Bauteil, der nicht nur die Herstellung des Ventils verteuert, sondern auch den Zusammenbau erschwert. Auch ist der Raumbedarf eines Distanz- oder Führungsringes im Zentrum des Ventils verhältnismäßig groß, wodurch dessen möglicher Durchgangsquerschnitt verringert wird. Bei an der Fängerfläche unmittelbar angeschraubten Hilfsplatten ist der Aufwand noch größer, weil mehrere Schrauben vorgesehen und montiert werden müssen, die überdies beim Auffangen der Verschlußplatte am Fänger hindernd im Wege sein können.In the known designs, the fixing of the auxiliary plates in the valve is relatively complex. The use of a spacer ring means a separate component, which not only makes the valve more expensive, but also complicates assembly. The space requirement of a spacer or guide ring in the center of the valve is relatively large, as a result of which its possible passage cross section is reduced. In the case of auxiliary plates screwed directly onto the catcher surface, the effort is even greater because several screws must be provided and installed, which can also be an obstacle in the way of catching the closure plate on the catcher.

Der Erfindung liegt die Aufgabe zugrunde, die bisher bekannten Plattenventile der angeführten Bauart so zu verbessern und zu vereinfachen, daß die vorgesehenen Hilfsplatten bei Verwendung von nur wenigen Bauteilen einfach und rasch im Ventil befestigt werden können.The invention has for its object to improve and simplify the previously known plate valves of the type mentioned so that the auxiliary plates provided can be easily and quickly attached to the valve using only a few components.

Mit der Erfindung wird diese Aufgabe dadurch gelöst, daß der Fänger mit einer Fängernabe gegen den Ventilsitz ragt, die mit wenigstens einem radialen Einschnitt, z.B. einer Nut versehen ist, daß die Hilfsplatte in ihrem Zentrum eine Aussparung aufweist, die größer als der Querschnitt der Fängernabe ist und wenigstens zwei über ihren Innenrand vorspringende Haltearme besitzt, und daß die Haltearme durch Aufsetzen der Hilfsplatte mit ihrer zentralen Ausnehmung auf die Fängernabe und eine Relativbewegung zwischen Fänger und Hilfsplatte, z.B. durch Verdrehen oder Verschieben der Hilfsplatte in ihrer Ebene, in einen Einschnitt der Fängernabe einrastbar sind. Der Fänger ist also bei der erfindungsgemäßen Ventilausbildung mit einer Nabe versehen, die mit ihm einstückig zusammenhängen kann, so daß kein einziger Distanz- oder Führungsring zwischen Ventilsitz und Fänger erforderlich ist. Die entsprechend ausgebildete Hilfsplatte braucht bei der Montage nur auf diese Fängernabe aufgesetzt und durch eine Relativbewegung verankert werden, um eine sichere Fixierung im Ventil zu erzielen und eine reibungsfreie Bewegung dieser Platte zu ermöglichen. In der Fängernabe sind lediglich ein oder mehrere, der Anzahl der aufzunehmenden Hilfsplatten entsprechend breite Einschnitte erforderlich, die leicht hergestellt werden können. Die erf indungsgemäße Ausbildung zeichnet sich somit durch Einfachheit, leichte Montierbarkeit ohne Werkzeuge und durch wenige Bestandteile aus.With the invention, this object is achieved in that the catcher projects with a catcher hub against the valve seat, which is provided with at least one radial incision, for example a groove, that the auxiliary plate has a recess in its center which is larger than the cross section of the Catcher hub is and has at least two retaining arms projecting over its inner edge, and that the retaining arms by placing the auxiliary plate with its central recess on the catcher hub and a relative movement between the catcher and auxiliary plate, for example by twisting or moving the auxiliary plate in its plane, into an incision in the Catcher hub can be snapped into place. The catcher is thus provided in the valve design according to the invention with a hub, which can be connected in one piece with it, so that no single spacer or guide ring between the valve seat and catcher is required. The correspondingly designed auxiliary plate only needs to be placed on this catcher hub during assembly and anchored by a relative movement in order to achieve a secure fixation in the valve and to enable a smooth movement of this plate. In the catcher hub, only one or more incisions corresponding to the number of auxiliary plates to be accommodated, which are easy to produce, are required. The training according to the invention is thus characterized by simplicity, easy assembly without tools and by few components.

Bei einer bevorzugten Ausführung der Erfindung ist die Fängernabe mit unrundem Querschnitt ausgebildet und weist in Achsrichtung verlaufende, zu den Haltearmen der zugeordneten Hilfsplatte passende Abflachungen der Kreisform oder Einsprünge auf, wobei die Hilfsplatte auf die Fängernabe in Achsrichtung aufsteckbar und durch Verdrehen in die Einschnitte der Fängernabe einrastbar ist. Auch bei dieser Ausbildung ist die Fängernabe einfach herstellbar, weil nur verhältnismäßig kleine Abflachungen oder Ausnehmungen notwendig sind, die einfach durch Fräsen oder Schleifen hergestellt werden können.In a preferred embodiment of the invention, the catcher hub is formed with a non-circular cross-section and has flats of circular shape or recesses that run in the axial direction and match the holding arms of the associated auxiliary plate, the auxiliary plate being attachable to the catcher hub in the axial direction and by twisting into the incisions in the catcher hub can be snapped into place. This one too Training, the catcher hub is easy to manufacture because only relatively small flats or recesses are required, which can be easily produced by milling or grinding.

Eine weitere vorteilhafte Ausführungsform der Erfindung besteht darin, daß die Fängernabe an zwei diametral gegenüberliegenden Stellen Einschnitte aufweist und die im Zentrum der Hilfsplatte angeordnete Ausnehmung exzentrisch auf die Fängernabe paßt, wobei die Haltearme nach dem Aufsetzen der Hilfsplatte auf die Fängernabe durch Verschieben der Hilfsplatte in ihrer Ebene in die Einschnitte der Fängernabe einrastbar sind. In diesem Fall kann die Fängernabe ihren zylindrischen Querschnitt beibehalten; sie muß lediglich mit Einschnitten zur Aufnahme der Haltearme versehen sein. Die Ausnehmung im Zentrum der Hilfsplatte muß allerdings etwas größer sein, so daß diese Ausführung insgesamt auch einen etwas größeren Raum beansprucht.Another advantageous embodiment of the invention is that the catcher hub has incisions at two diametrically opposite points and the recess arranged in the center of the auxiliary plate fits eccentrically on the catcher hub, the holding arms after the auxiliary plate has been placed on the catcher hub by moving the auxiliary plate in it Plane can be snapped into the incisions in the catcher hub. In this case the catcher hub can maintain its cylindrical cross-section; it only has to be provided with incisions for receiving the holding arms. The recess in the center of the auxiliary plate must, however, be somewhat larger, so that this design also takes up a somewhat larger space overall.

In weiterer Ausgestaltung der Erfindung können die Haltearme der Hilfsplatte wenigstens in ihrem in die Einschnitte der Fängernabe eingreifenden Bereich gewölbt sein, vorzugsweise mit einer parallel zu einem Radius der Fängernabe verlaufenden Erzeugenden, und in die Einschnitte der Fängernabe mit elastischer Vorspannung einrasten. Die Haltearme werden dabei beim Einschieben in die Einschnitte der Fängernabe elastisch verformt, so daß sie federnd die Einschnitte ausfüllen und spielfrei in diesen verankert sind. Die dabei entstehenden Reibungskräfte verhindern ein unbeabsichtigtes Lösen der Haltearme aus den Einschnitten und dadurch auch ein nachteiliges Lockerwerden der im Ventil fixierten Hilfsplatte.In a further embodiment of the invention, the holding arms of the auxiliary plate can be arched at least in their area engaging in the incisions of the catcher hub, preferably with a generatrix running parallel to a radius of the catcher hub, and can snap into the incisions of the catcher hub with elastic prestress. The holding arms are elastically deformed when inserted into the incisions of the catcher hub, so that they springily fill the incisions and are anchored in them without play. The resulting frictional forces prevent the holding arms from being unintentionally released from the incisions and thereby also a disadvantageous loosening of the auxiliary plate fixed in the valve.

Im Rahmen der Erfindung kann eine Verbesserung der Fixierung weiters dadurch erreicht werden, daß in der Fängernabe wenigstens eine Axialbohrung vorgesehen ist, die wenigstens einen Einschnitt zur Aufnahme eines Haltearmes der Hilfsplatte schneidet und in die ein Stift einsteckbar ist, der nach dem Einrasten der Haltearme in den zugehörigen Einschnitt mit dem Haltearm in Eingriff kommt. Die Haltearme werden dabei also in dem jeweils zugehörigen Einschnitt der Fängernabe durch einen einfachen Stift gesichert, so daß die Hilfsplatte weder aus ihrer Fixierung ausrasten noch sich verdrehen kann.In the context of the invention, an improvement of the fixation can further be achieved in that at least one axial bore is provided in the catcher hub, which cuts at least one incision for receiving a holding arm of the auxiliary plate and into which a pin can be inserted, which, after the holding arms have locked in place the associated incision comes into engagement with the holding arm. The holding arms are thus secured in the respective incision of the catcher hub by a simple pin, so that the auxiliary plate can neither disengage from its fixation nor twist.

Eine zweckmäßige Ausführung besteht dabei darin, daß die in die Axialbohrungen eingesetzten Stifte im Bereich der Einschnitte der Fängernabe mit den in dieser vorgesehenen Einschnitten fluchtende Einschnitte aufweisen, in die die Haltearme einschiebbar sind, wobei in den Haltearmen etwa halbkreisförmige Aussparungen vorgesehen sind, in die die Stifte durch Verdrehen mit ihrer dem Einschnitt abgewendeten Seite eingreifen. Dabei ist es nicht notwendig, die Stifte erst nach dem Einsetzen der Haltearme in die Einschnitte der Fängernabe in die Fängernabe einzuschieben. Die Einschnitte in den Stiften ermöglichen das Einsetzen der Haltearme auch bei schon eingeschobenen Stiften. Durch bloßes Verdrehen der Stifte erfolgt sodann die endgültige Verankerung.An expedient embodiment consists in the fact that the pins inserted into the axial bores in the area of the incisions of the catcher hub have aligned incisions in the incisions provided therein, into which the holding arms can be inserted, wherein approximately semicircular recesses are provided in the holding arms, into which the Engage the pins by twisting them with their side facing away from the incision. It is not necessary to insert the pins into the catch hub only after the holding arms have been inserted into the catch hub. The incisions in the pins allow the holding arms to be inserted even with the pins already inserted. The final anchoring is then done by simply twisting the pins.

Erfindungsgemäß können die Stifte in Sackbohrungen sitzen, die von der Seite des Ventilsitzes ausgehen, durch diesen gegen Herausfallen abgedeckt sind und zwecks Verdrehung an ihrer Stirnseite mit einem Angriffsprofil für ein Werkzeug, z.B. mit einem Querschlitz für einen Schraubenzieher, versehen sind.According to the invention, the pins can be seated in blind bores which start from the side of the valve seat these are covered to prevent them from falling out and are provided on their end face with an attack profile for a tool, for example with a transverse slot for a screwdriver, for rotation.

Eine Variante der erfindungsgemäßen Fixierung besteht schließlich darin, daß die Stifte aus den Sackbohrungen im Fänger gegen den Ventilsitz vorragen und in im Ventilsitz vorgesehene Sackbohrungen eingreifen. Dadurch übernehmen diese Stifte zugleich die Aufgabe der Positionierung des Ventilsitzes gegenüber der Fängerplatte, wodurch zusätzliche Einrichtungen wie Stifte oder Markierungen entfallen können. Die aus der Fängernabe vorstehenden Stifte sind dabei einfach faßbar und verdrehbar. Dadurch wird zwar die Montage erleichtert, es sind aber zusätzliche, wenn auch nur kurze Sackbohrungen im Ventilsitz erforderlich.Finally, a variant of the fixation according to the invention is that the pins protrude from the blind holes in the catcher against the valve seat and engage in blind holes provided in the valve seat. As a result, these pins also take on the task of positioning the valve seat relative to the catcher plate, which means that additional devices such as pins or markings can be omitted. The pins protruding from the catcher hub are easy to grasp and twist. This makes assembly easier, but additional, if only short, blind holes are required in the valve seat.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen, die in den Zeichnungen dargestellt sind. In diesen zeigen: Fig. 1 einen axialen Mittelschnitt durch ein Ausführungsbeispiel des erfindungsgemäßen Ventils, Fig. 2 dazu einen gleichfalls axialen Mittelschnitt durch den Fänger, Fig. 3 eine Draufsicht auf den Fänger, Fig. 4 ein Detail im Axialschnitt und in größerem Maßstab, Fig. 5 einen Schnitt nach der Linie V-V in Fig. 4, Fig. 6 ein Detail einer weiteren Ausführungsform im axialen Mittelschnitt und in größerem Maßstab, Fig. 7 einen Schnitt nach der Linie VII-VII in Fig. 6 und Fig. 8, einen Querschnitt durch einen Haltearm einer Hilfsplatte.Further details and advantages of the invention will become apparent from the following description of exemplary embodiments which are illustrated in the drawings. 1 shows an axial central section through an exemplary embodiment of the valve according to the invention, FIG. 2 also shows an axial central section through the catcher, FIG. 3 shows a plan view of the catcher, FIG. 4 shows a detail in axial section and on a larger scale, 5 shows a section along the line VV in FIG. 4, FIG. 6 shows a detail of a further embodiment in the axial central section and on a larger scale, FIG. 7 shows a section along the line VII-VII in FIGS. 6 and 8, a cross section through a support arm of an auxiliary plate.

Nach Fig. 1 besteht das beispielsweise dargestellte erfindungsgemäße Ventil aus einem Ventilsitz 1 und einer Fängerplatte 2, die mit dem Ventilsitz 1 durch eine Mittelschraube 3 zusammengehalten wird. Zwischen dem Ventilsitz 1 und dem Fänger 2 befinden sich eine Verschlußplatte 4, die beispielsweise aus Kunststoff bestehen kann, und eine oder mehrere Hilfsplatten 5, z.B. Feder-,Dämpfer- oder Lenkerplatten. Im Ventilsitz 1 sind Durchgangskanäle 6 angeordnet, die durch die Verschlußplatte 4 gesteuert werden, und im Fänger 2 sind Strömungskanäle 7 vorgesehen. Im Zentrum des Ventils sind noch ein Stift 8 und eine Fängernabe 9 ersichtlich.1, the valve according to the invention, for example shown, consists of a valve seat 1 and a catcher plate 2, which is held together with the valve seat 1 by a central screw 3. Between the valve seat 1 and the catcher 2 there is a closure plate 4, which can be made of plastic, for example, and one or more auxiliary plates 5, e.g. Spring, damper or handlebar plates. Through channels 6 are arranged in the valve seat 1 and are controlled by the closure plate 4, and flow channels 7 are provided in the catcher 2. In the center of the valve, a pin 8 and a catcher hub 9 can still be seen.

Aus Fig. 2 ist zu erkennen, daß der Fänger 2 eine mit ihm einstückig verbundene Fängernabe 9 aufweist, die mit einer Axialbohrung 10 versehen ist, in die der in Fig. 1 mit 8 bezeichnete Stift einsteckbar ist. Auch in Fig. 3 sind zwei Stifte 8 in der Fängernabe 9 zu erkennen, die einander diametral gegenüberliegen. Am Außenrand der Fängernabe 9 ist gestrichelt ein als radial nach außen offene Nut ausgebildeter ringförmiger Einschnitt 11 vorgesehen und in einem Winkel von etwa 90° zwischen den beiden Stiften 8 sind Abflachungen 12 der Fängernabe 9 etwa durch Fräsen oder Schleifen ausgebildet.From Fig. 2 it can be seen that the catcher 2 has a catcher hub 9 connected to it in one piece, which is provided with an axial bore 10 into which the pin labeled 8 in Fig. 1 can be inserted. 3, two pins 8 can be seen in the catcher hub 9, which are diametrically opposite one another. On the outer edge of the catcher hub 9, a ring-shaped incision 11 formed as a groove which is open radially outward is provided in dashed lines and flats 12 of the catcher hub 9 are formed at an angle of approximately 90 ° between the two pins 8, for example by milling or grinding.

Aus den Fig. 4 und 5 ist die genauere Ausbildung des dargestellten Ventils im Bereich der Fängernabe 9 zu erkennen. In Fig. 4 sind der mittlere Teil des Ventilsitzes 1 und des Fängers 2, die Verschlußplatte 4 und zwei Hilfsplatten 5 dargestellt. Weiters sind die Fängernabe 9 und zwei Stifte 8 zu erkennen. Die beiden Hilfsplatten 5 ragen mit ihrem Innenrand in den Einschnitt 11 hinein, der in der Fängernabe 9 vorgesehen ist.4 and 5 show the more precise design of the valve shown in the area of the catcher hub 9. In Fig. 4, the middle part of the valve seat 1 and the catcher 2, the closure plate 4 and two auxiliary plates 5 are shown. Furthermore, the catcher hubs are 9 and two Detect pins 8. The two auxiliary plates 5 protrude with their inner edge into the incision 11 which is provided in the catcher hub 9.

Wie Fig. 5 weiter erkennen läßt, ist die Fängernabe 9 auch hier mit unrundem Querschnitt ausgebildet. Die beiden Abflachungen 12 liegen einander diametral gegenüber. Die dargestellte Hilfsplatte 5 ist auf die Fängernabe 9 so aufgesetzt, daß sie mit vorspringenden Haltearmen 13 an den Abflachungen 12 anliegt. Durch Verdrehen der Hilfsplatte 5, etwa in Richtung des Pfeiles 14, aber auch in entgegengesetzter Richtung, greifen die kurzen Arme 13 in die Einschnitte 11 der Fängernabe 9 ein und gelangen bei einer Verdrehung von etwa 90° in den Bereich der Stifte 8. Etwa in der Mitte der Haltearme 13 ist je eine halbkreisförmige Aussparung 15 vorgesehen, in die die Stifte 8 eingreifen.As can also be seen in FIG. 5, the catch hub 9 is also formed with a non-circular cross section. The two flats 12 lie diametrically opposite one another. The auxiliary plate 5 shown is placed on the catcher hub 9 in such a way that it rests on the flats 12 with projecting holding arms 13. By turning the auxiliary plate 5, for example in the direction of arrow 14, but also in the opposite direction, the short arms 13 engage in the incisions 11 in the catcher hub 9 and reach the area of the pins 8 when they are rotated by approximately 90 ° a semicircular recess 15 is provided in the middle of the holding arms 13, into which the pins 8 engage.

Beim Verdrehen der Hilfsplatte 5 werden die Stifte 8 etwas angehoben. Sobald sie mit den halbkreisförmigen Aussparungen 15 fluchten, werden sie in diese eingesteckt. Die oberen Enden der Stifte 8 greifen gemäß Fig. 4 in Sackbohrungen 16 des Ventilsitzes 1 ein, wodurch sie auch gegen Herausfallen gesichert sind. Diese Stifte 8 verhindern so ein unbeabsichtigtes Verdrehen der Hilfsplatten 5, so daß diese in ihrer vorausbestimmten Lage festgehalten werden.When the auxiliary plate 5 is rotated, the pins 8 are raised somewhat. As soon as they are aligned with the semicircular recesses 15, they are inserted into them. 4 engage in blind bores 16 of the valve seat 1, as a result of which they are also secured against falling out. These pins 8 thus prevent unintentional rotation of the auxiliary plates 5 so that they are held in their predetermined position.

Das Ausführungsbeispiel nach den Fig. 6 und 7 unterscheidet sich von dem vorbeschriebenen Ausführungsbeispiel hauptsächlich dadurch, daß die Hilfsplatte 5 auf die Fängernabe 9 exzentrisch aufgesetzt wird, wobei diese auch einen kreisrunden Querschnitt aufweisen kann. Fig. 7 läßt erkennen, daß die Fängernabe 9 an zwei diametral gegenüberliegenden Stellen zwei Einschnitte 11 aufweist, die von je einem Stift 8 durchsetzt sind. Die Stifte 8 selbst sind gemäß Fig. 6 gleichfalls mit Einschnitten 17 versehen, die bei eingesteckten Stiften 8 mit den Einschnitten 11 fluchten.The exemplary embodiment according to FIGS. 6 and 7 differs from the previously described exemplary embodiment mainly in that the auxiliary plate 5 is placed eccentrically on the catcher hub 9, which can also have a circular cross section. Fig. 7 shows that the catcher hub 9 has two incisions 11 at two diametrically opposite points, each of which is penetrated by a pin 8. 6, the pins 8 themselves are likewise provided with incisions 17 which are aligned with the incisions 11 when the pins 8 are inserted.

Aus Fig. 7 ist weiterhin zu erkennen, daß die Hilfsplatte 5 mit ihrer Ausnehmung exzentrisch auf die Fängernabe 9 paßt. Sie wird also in der in Fig. 7 dargestellten Lage auf die Fängernabe 9 aufgeschoben, worauf dann die Hilfsplatte 5 in Richtung des Pfeiles 14 in ihrer Ebene verschoben wird, wobei die beiden Haltearme 13 in die Einschnitte 11 der Fängernabe 9 eingreifen und auch die Einschnitte 17 in den Stiften 8 durchsetzen. Sobald die Haltearme 13 sich mit den halbkreisförmigen Aussparungen 15 im Bereich der Stifte 8 befinden, können diese um etwa 180° verdreht werden, wobei die volle Hälfte der Stifte 8 jeweils in den Bereich der halbkreisförmigen Aussparungen 15 gelangt. Dadurch werden die Hilfsplatten 5 relativ zur Fängernabe 9 fixiert.From Fig. 7 it can also be seen that the auxiliary plate 5 fits eccentrically on the catcher hub 9 with its recess. It is thus pushed onto the catcher hub 9 in the position shown in FIG. 7, whereupon the auxiliary plate 5 is then shifted in its plane in the direction of the arrow 14, the two holding arms 13 engaging in the incisions 11 of the catcher hub 9 and also the incisions 17 in pins 8. As soon as the holding arms 13 with the semicircular recesses 15 are in the region of the pins 8, they can be rotated by approximately 180 °, the full half of the pins 8 each reaching the region of the semicircular recesses 15. As a result, the auxiliary plates 5 are fixed relative to the catcher hub 9.

Zum Verdrehen der Stifte 8 sind diese an ihrer Stirnseite mit einem Angriffsprofil für ein Werkzeug versehen, im Ausführungsbeispiel mit einem Querschlitz 18, wie z.B. in Fig. 7 gezeigt ist, der für die Aufnahme eines Schraubenziehers bestimmt ist. Die je in einer Sackbohrung der Fängernabe 9 sitzenden Stifte 8 werden durch den Ventilsitz 1 abgedeckt und so gegen Herausfallen gesichert.To rotate the pins 8, they are provided on their end face with an attack profile for a tool, in the exemplary embodiment with a transverse slot 18, such as e.g. is shown in Fig. 7, which is intended for receiving a screwdriver. The pins 8, each seated in a blind bore of the catcher hub 9, are covered by the valve seat 1 and thus secured against falling out.

Fig. 8 zeigt eine Variante der Haltearme 13 in Ansicht. Wie aus der Darstellung ersichtlich ist, können die Haltearme 13 statt eben auch leicht gewölbt ausgebildet sein, so daß sie beim Einschieben in die Einschnitte 11 der Fängernabe 9 federnd zusammengedrückt werden. Auf diese Weise werden die Hilfsplatten 5 spielfrei festgehalten. Bei ausreichender Federkraft können dabei allenfalls die Stifte 8 zur Sicherung entfallen.8 shows a variant of the holding arms 13 in view. As can be seen from the illustration, the holding arms 13 can also have a slightly curved shape instead of just so that they are resiliently compressed when inserted into the incisions 11 of the catcher hub 9. In this way, the auxiliary plates 5 are held without play. With sufficient spring force, the pins 8 can be omitted for securing.

Die Hilfsplatten 5 können, wie bereits ausgeführt wurde, Feder-, Dämpfer- oder auch Lenkerplatten sein. Am häufigsten wird die Federplatte angewendet werden, weil praktisch jedes moderne Plattenventil über eine Befederung verfügt. Dabei kommen sowohl die klassischen Federplatten mit aus ihrer Ebene herausgebogenen federnden Arme in Frage, als auch sogenannte Wellringfedern, die aus geschlossenen Ringen bestehen, deren Ringabschnitte auf beide Seiten der Federplatte aus der Plattenebene herausgebogen sind. Auch auf andere Weise verformte Federplatten sind denkbar, z.B. sogenannte Sinusfedern mit zylindrischer Wölbung oder Tellerfedern. Es ist auch möglich, im gleichen Ventil verschiedene Plattenarten auf die erfindungsgemäße Weise zu fixieren, z.B. Feder- und Dämpferplatten, allenfalls auch in verschiedenem Abstand vom Fänger.As already stated, the auxiliary plates 5 can be spring, damper or handlebar plates. The spring plate will be used most often because practically every modern plate valve has springing. Both the classic spring plates with resilient arms bent out of their plane and so-called corrugated ring springs, which consist of closed rings, the ring sections of which are bent out of the plate plane on both sides of the spring plate. Spring plates deformed in other ways are also conceivable, e.g. so-called sinus springs with cylindrical curvature or disc springs. It is also possible to fix different types of plates in the same valve in the manner according to the invention, e.g. Spring and damper plates, possibly at different distances from the catcher.

Claims (8)

  1. A plate valve, in particular for compressors, comprising a valve seat, a catcher arranged at a distance therefrom and plates arranged between the valve seat and the catcher, namely a closing plate controlling ports in the valve seat and at least one auxiliary plate, e.g. a spring plate, damper plate or guide plate, associated with the closing plate and fixed relative to the catcher, characterised in that a catcher hub (9) of the catcher (2) projects towards the valve seat (1) and is provided with at least one radial indentation (11), e.g. a groove, in that the auxiliary plate (5) is provided, in its centre, with an opening greater than the cross-section of the catcher hub (9) and has at least two retaining arms (13) projecting beyond its inner edge, and in that the retaining arms (13) are engageable in the indentation (11) of the catcher hub (9) by mounting the auxiliary plate (5), with its central opening, on the catcher hub (9) and by means of a relative movement between the catcher (2) and the auxiliary plate (5), e.g. by rotating or displacing the auxiliary plate (5) in the plane thereof.
  2. A plate valve according to claim 1, characterised in that the catcher hub (9) is formed with a non-circular cross-section and has recesses or flattened portions (12) of a circular form which extend in the axial direction and are adapted to the retaining arms (13) of the associated auxiliary plate (5), the said auxiliary plate (5) being mountable on the catcher hub (9) in the axial direction and being engageable in the indentations (11) of the catcher hub (9) by rotation.
  3. A plate valve according to claim 1, characterised in that the catcher hub (9) has indentations (11) at two diametrically opposed points and the opening, arranged in the centre of the auxiliary plate (5), fits eccentrically on the catcher hub (9), the retaining arms (13) being engageable in the indentations (11) of the catcher hub (9), after the auxiliary plate (5) has been mounted on the catcher hub (9), by displacement of the auxiliary plate (5) in the plane thereof.
  4. A plate valve according to claim 1, 2 or 3, characterised in that the retaining arms (13) of the auxiliary plate (5) are convex at least in their region engaging in the indentations (11) of the catcher hub (9), preferably with a generatrix extending parallel to a radius of the catcher hub (9), and engage in the indentations (11) of the catcher hub (9) with resilient pretension.
  5. A plate valve according to any one of claims 1 to 4, characterised in that at least one axial bore (10) is provided in the catcher hub (9) and intersects at least one indentation (11) for receiving a retaining arm (13) of the auxiliary plate (5), a pin (8), which engages with the retaining arm (13) after the engagement of the retaining arms (13) in the associated indentation (11), being insertable into the said axial bore (10).
  6. A plate valve according to claim 5, characterised in that the pins (8) inserted into the axial bores (10) have, in the region of the indentations (11) of the catcher hub (9), indentations (17) which are aligned with the indentations (11) provided in the said catcher hub (9) and into which the retaining arms (13) are insertable, substantially semi-circular recesses (15), into which the pins (8) engage by being rotated by their ends directed away from the indentation (17), being provided in the retaining arms (13).
  7. A plate valve according to claim 5 or 6, characterised in that the pins (8) are located in blind holes (16) originating in the face of the valve seat (1), are protected against falling out by the said valve seat (1) and, for the purpose of being rotated at their ends, are provided with an engagement profile for a tool, e.g. with a transverse slot (18) for a screwdriver.
  8. A plate valve according to claim 5 or 6, characterised in that the pins (18) project from the blind holes (16) in the catcher (2) towards the valve seat (1) and engage in blind holes (16) provided in the valve seat (1).
EP94890035A 1993-02-15 1994-02-10 Plate valve in particular for compressor Expired - Lifetime EP0611889B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0027093A AT401550B (en) 1993-02-15 1993-02-15 DISC VALVE, ESPECIALLY FOR COMPRESSORS
AT270/93 1993-02-15

Publications (2)

Publication Number Publication Date
EP0611889A1 EP0611889A1 (en) 1994-08-24
EP0611889B1 true EP0611889B1 (en) 1995-10-25

Family

ID=3486081

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94890035A Expired - Lifetime EP0611889B1 (en) 1993-02-15 1994-02-10 Plate valve in particular for compressor

Country Status (7)

Country Link
EP (1) EP0611889B1 (en)
KR (1) KR940019996A (en)
CN (1) CN1096856A (en)
AT (1) AT401550B (en)
AU (1) AU663815B2 (en)
DE (1) DE59400034D1 (en)
TW (1) TW262521B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103452812A (en) * 2013-09-22 2013-12-18 四川大川压缩机有限责任公司 Anti-tilt compressor net-type air valve

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2213259A (en) * 1937-01-05 1940-09-03 Sullivan Machinery Co Valve mechanism
US2632621A (en) * 1950-09-23 1953-03-24 Vilbiss Co Valve mechanism
GB923215A (en) * 1960-02-27 1963-04-10 Compressor Accessories Ltd Improvements in or relating to fluid control valves
DE1133193B (en) * 1960-10-20 1962-07-12 Hoerbiger Ventilwerke Ag Plate valve
AT243420B (en) * 1963-05-08 1965-11-10 Enfo Grundlagen Forschungs Ag Multi-ring valve
DE1650510B2 (en) * 1967-07-13 1975-08-21 Remscheider Werkzeugfabrik A. Ibach & Co, 5630 Remscheid Automatic valve for reciprocating compressors
GB2184521B (en) * 1985-12-21 1990-06-06 David Godfrey Williams A valve component for a frictionless guided valve
DE58905877D1 (en) * 1988-05-31 1993-11-18 Hoerbiger Ventilwerke Ag Wien Ring valve.

Also Published As

Publication number Publication date
AU5317394A (en) 1995-06-22
ATA27093A (en) 1996-02-15
AT401550B (en) 1996-09-25
KR940019996A (en) 1994-09-15
AU663815B2 (en) 1995-10-19
CN1096856A (en) 1994-12-28
DE59400034D1 (en) 1995-11-30
TW262521B (en) 1995-11-11
EP0611889A1 (en) 1994-08-24

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