EP0494590B1 - Valve plate for piston compressors - Google Patents

Valve plate for piston compressors Download PDF

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Publication number
EP0494590B1
EP0494590B1 EP19910890308 EP91890308A EP0494590B1 EP 0494590 B1 EP0494590 B1 EP 0494590B1 EP 19910890308 EP19910890308 EP 19910890308 EP 91890308 A EP91890308 A EP 91890308A EP 0494590 B1 EP0494590 B1 EP 0494590B1
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EP
European Patent Office
Prior art keywords
valve
seat plate
bushes
individual
plates
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
EP19910890308
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German (de)
French (fr)
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EP0494590A1 (en
Inventor
Helmut Dipl.-Ing. Schröcker (FH)
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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Classifications

    • 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
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • F04B39/064—Cooling by a cooling jacket in the pump casing
    • 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
    • F04B39/1066—Valve plates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6416—With heating or cooling of the system
    • Y10T137/6579—Circulating fluid in heat exchange relationship
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7838—Plural
    • Y10T137/7839—Dividing and recombining in a single flow path

Definitions

  • the invention relates to a valve seat plate, in particular for piston compressors, with at least three superimposed individual plates, which on the one hand have continuous channels for the medium to be controlled and, on the other hand, delimit cavities for cooling medium between them.
  • Valve seat plates constructed from several individual plates are known, for example, from DE-AS 1 142 478 and US Pat. No. 2,449,408, respectively, and enable the relatively simple production of the channels or cavities integrated in the seat plate. While only channels for the medium to be controlled are formed in the training according to the document mentioned in the first place with the aid of the correspondingly recessed central plate, an arrangement of the type mentioned at the outset is known from the second-mentioned US PS, in which in addition to Channels for the medium to be controlled and cooling rooms or channels between the individual plates are defined.
  • valve seat plates have been cast in one piece by means of a croning core for the cavities, which of course has limitations in terms of shape and thickness due to limits of Casting technology and a high control and cleaning effort for the cavity.
  • the object of the present invention is to improve a valve seat plate of the type mentioned in such a way that the disadvantages of the known arrangements of this type are avoided and that, in particular, a valve seat plate is created in a simple and easy-to-assemble manner in which the correct positioning of the individual plates and their sealing is facilitated or improved in the flow area.
  • the channels are arranged in bushings which are continuous over the thickness of the valve seat plate and are sealed off from the cavities.
  • the components delimiting the channels are thus automatically positioned correctly.
  • the thickness tolerance of the punching center part is not dependent on a separate part for the pressure medium bores.
  • the continuous channels for the medium to be controlled are independent of the possible misalignment of the individual plates and the quality of the connection, e.g. the soldering.
  • the individual components of the valve seat plate can be produced from their respective function or production of adapted material, and a wide variety of combinations are possible.
  • the wall thicknesses of the bushings used for the channels can be made much thinner than, for example, a cast in one piece, so that improved heat transfer conditions result. All individual components of the valve seat plate can be designed so that no machining is required after the connection.
  • the middle (s) single plate (s) in the area of the sleeves with the formation of cavities for the cooling medium is (are) excluded and that the sleeves have shoulders for supporting and exact positioning of the outer single plates.
  • the bushes can have an enlarged heat transfer surface, preferably rib-like outer contours, in the region of the cavities. Together with the already mentioned possibility of making the sleeves thin-walled, this results in a particularly good heat dissipation for cooling the most stressed areas.
  • the middle (s) individual plate (s) is (are) fixed in their relative position by means of separate centering parts, preferably inserted sleeves which are continuous over the thickness of the valve seat plate. Since the channels for the medium to be controlled are guided independently of the central individual plates in the bushings used, the central individual plates, or the possibly only central individual plate, can be fixed in position in the aforementioned simple manner.
  • the bushes and the individual plates can consist of different materials, which gives the most diverse possibilities for taking into account the special loads and also the production processes.
  • the sleeves are soldered to the individual plates, with which one can allow tight and permanent connections to be achieved even within wide limits of different materials.
  • FIG. 1 shows a cross section through a valve seat plate according to the invention along the line I-I in FIG. 2, and FIG. 2 shows a plan view of the valve plate according to FIG. 1.
  • the valve seat plate 1 shown for a piston compressor or the like, not shown, has three superimposed individual plates 2, 3, 4, in which continuous channels 5 for the pressure medium to be controlled, a cavity 6 for cooling medium, and a suction chamber 7 for the supply of the to be compressed Medium are trained.
  • the channels 5 are arranged in bushes 8 which are sealed over the entire thickness of the valve seat plate and sealed with respect to the cavity 6 (could also be formed by a plurality of cavities which are divided and connected to supply and discharge lines for cooling medium) and are assembled in the assembled state (not shown here) of the whole Valve on the upper side covered by a spring-loaded valve flap or the like.
  • the cavity 6 is defined here by a corresponding recess in the central individual plate 3, the contour of which is indicated by dashed lines in FIG. 2 and is designated by 9. On the top and bottom, the cavity 6 is delimited by the individual plates 2 and 4 and has overflow openings 10 to the cylinder head (not shown) on the inflow and outflow sides.
  • the suction chamber 7 is delimited on the lower side in the illustration by the lower individual plate 4, which has inlet slots 11 which are covered from the underside in the assembled state of the entire valve by means of a corresponding valve plate.
  • the middle single plate 3 has three webs 12 in the area of the suction space 7 - at the top, the suction space 7 is open at the top through an opening, the contour of which is designated by 13 in FIG. 2, in the upper single plate 2 and usually goes directly into one connected Intake line (not shown here) or the like.
  • the middle single plate 3 is thus excluded in the area of the sleeves 8 for the channels 5 carrying the pressure medium to form the cavity 6, the sleeves 8 here having paragraphs 14 in the area of their lower end for support and precise positioning on the lower single plate 4.
  • Enlarged bores 15 are provided in the area of the upper individual plate 2, which allow the sleeves 8 and the lugs 14 to be inserted from the top.
  • an enlarged heat transfer surface is provided on the outside of the bushes 8, which preferably have a rib-like outer contour 16 for this purpose.
  • the middle single plate 3 is fixed in its relative position by inserted separate sleeves 17, which are continuous over the thickness of the valve seat plate 1, whereby due to the independence of this position fixing of the design of the channels 5 in the bushes 8, no particular accuracy is required in this connection.
  • the sleeves 8 can be made of different material from the individual plates 2, 3, 4 and can be soldered to the individual plates 2, 4, which allows a wide variety of requirements to be taken into account when selecting the material.
  • the valve Due to the possibility of making the wall thicknesses of the sleeves 8 relatively thin and to increase the surface area for the coolant flow by designing the outer contour 16 of the sleeves, the valve as a whole can Performance (degree of delivery / final pressure) can be increased - the higher temperatures that occur can be easily dissipated by the above-mentioned improvements and can thus be controlled.

Description

Die Erfindung betrifft eine Ventilsitzplatte, insbesondere für Kolbenkompressoren, mit zumindest drei übereinanderliegenden Einzelplatten, welche einerseits durchgehende Kanäle für das zu steuernde Medium aufweisen und andererseits zwischen sich Hohlräume für Kühlmedium begrenzen.The invention relates to a valve seat plate, in particular for piston compressors, with at least three superimposed individual plates, which on the one hand have continuous channels for the medium to be controlled and, on the other hand, delimit cavities for cooling medium between them.

Aus mehreren Einzelplatten aufgebaute Ventilsitzplatten sind beispielsweise aus der DE-AS 1 142 478 bzw. der US-PS 2 449 408 bekannt und ermöglichen die relativ einfache Herstellung der in die Sitzplatte integrierten Kanäle bzw. Hohlräume. Während bei der Ausbildung gemäß der an erster Stelle genannten Schrift mit Hilfe der entsprechend ausgenommenen mittleren Platte lediglich Kanäle für das zu steuernde Medium gebildet werden, ist aus der an zweiter Stelle genannten US-PS eine Anordnung der eingangs genannten Art bekannt, bei der neben den Kanälen für das zu steuernde Medium auch Kühlräume bzw. -kanäle zwischen den Einzelplatten definiert sind. Im Hinblick auf die Sicherstellung des freien Durchflusses aller Kanäle bzw. Hohlräume einerseits und der zuverlässigen Abdichtung derselben untereinander andererseits ergibt sich dabei jedoch ein erhöhter Montageaufwand, wobei zumeist separate Fixierungen für alle im Mittelbereich liegenden, nicht mit den äußeren Einzelplatten verbundenen Teile erforderlich sind. Nach der Verbindung der Einzelplatten beispielsweise mittels Lötung ist die lagerichtige Positionierung nur mit hohem Aufwand kontrollierbar. Darüber hinaus müssen im Hinblick auf die erwähnten Anforderungen zumindest alle im mittleren Bereich liegenden Teile extrem fein toleriert oder zusammensortiert werden.Valve seat plates constructed from several individual plates are known, for example, from DE-AS 1 142 478 and US Pat. No. 2,449,408, respectively, and enable the relatively simple production of the channels or cavities integrated in the seat plate. While only channels for the medium to be controlled are formed in the training according to the document mentioned in the first place with the aid of the correspondingly recessed central plate, an arrangement of the type mentioned at the outset is known from the second-mentioned US PS, in which in addition to Channels for the medium to be controlled and cooling rooms or channels between the individual plates are defined. With regard to ensuring the free flow of all channels or cavities on the one hand and the reliable sealing of the same with one another on the other hand, this results in an increased assembly effort, whereby separate fixings are usually required for all parts located in the central area and not connected to the outer individual plates. After the individual plates have been connected, for example by means of soldering, the correct positioning can only be checked with great effort. In addition, with regard to the requirements mentioned, at least all parts in the middle range must be tolerated or sorted extremely finely.

Bis jetzt ist man deshalb den beschriebenen Schwierigkeiten zumeist dadurch ausgewichen, daß man derartige Ventilsitzplatten in einem Stück mittels Croning-Kern für die Hohlräume gegossen hat, was natürlich Einschränkungen hinsichtlich Formgebung und Dicke zufolge von Grenzen der Gießtechnik und einen hohen Kontroll- und Reinigungsaufwand für den Hohlraum bedingt.So far, the difficulties described have mostly been avoided in that such valve seat plates have been cast in one piece by means of a croning core for the cavities, which of course has limitations in terms of shape and thickness due to limits of Casting technology and a high control and cleaning effort for the cavity.

Aufgabe der vorliegenden Erfindung ist es, eine Ventilsitzplatte der eingangs genannten Art so zu verbessern, daß die angeführten Nachteile der bekannten derartigen Anordnungen vermieden werden und daß insbesonders auf einfache und montagefreundliche Weise eine Ventilsitzplatte geschaffen ist, bei der die richtige Positionierung der Einzelplatten und deren Abdichtung im Strömungsbereich erleichtert bzw. verbessert wird.The object of the present invention is to improve a valve seat plate of the type mentioned in such a way that the disadvantages of the known arrangements of this type are avoided and that, in particular, a valve seat plate is created in a simple and easy-to-assemble manner in which the correct positioning of the individual plates and their sealing is facilitated or improved in the flow area.

Dies wird gemäß der vorliegenden Erfindung dadurch erreicht, daß die Kanäle in über die Dicke der Ventilsitzplatte durchgehenden, gegenüber den Hohlräumen abgedichteten Büchsen angeordnet sind. Damit sind die die Kanäle begrenzenden Bauelemente automatisch lagerichtig positioniert. Bei gestanzten Einzelplatten ist weiters von Vorteil, daß damit die Dickentoleranz des Stanzmittelteils nicht abhängig von einem separaten Teil für die Druckmediumsbohrungen ist. Die durchgehenden Kanäle für das zu steuernde Medium sind bezüglich der Dichtheit im Strömungsbereich unabhängig vom etwaigen Versatz der Einzelplatten und von der Qualität der Verbindung, z.B. der Lötung. Die einzelnen Bauteile der Ventilsitzplatte können aus ihrer jeweiligen Funktion bzw. Herstellung angepaßtem Werkstoff hergestellt werden, wobei vielfältigste Kombinationen möglich sind.This is achieved in accordance with the present invention in that the channels are arranged in bushings which are continuous over the thickness of the valve seat plate and are sealed off from the cavities. The components delimiting the channels are thus automatically positioned correctly. In the case of punched individual plates, it is also advantageous that the thickness tolerance of the punching center part is not dependent on a separate part for the pressure medium bores. The continuous channels for the medium to be controlled are independent of the possible misalignment of the individual plates and the quality of the connection, e.g. the soldering. The individual components of the valve seat plate can be produced from their respective function or production of adapted material, and a wide variety of combinations are possible.

Weiters können die Wanddicken der eingesetzten Büchsen für die Kanäle gegenüber beispielsweise einer in einem Stück gegossenen Ausführung wesentlich dünner ausgeführt werden, sodaß sich verbesserte Wärmeübergangsverhältnisse ergeben. Alle einzelnen Bestandteile der Ventilsitzplatte können dabei so ausgeführt werden, daß nach der Verbindung keine spanabhebende Fertigung mehr erforderlich ist.Furthermore, the wall thicknesses of the bushings used for the channels can be made much thinner than, for example, a cast in one piece, so that improved heat transfer conditions result. All individual components of the valve seat plate can be designed so that no machining is required after the connection.

In weiterer Ausbildung der Erfindung ist vorgesehen, daß die mittlere(n) Einzelplatte(n) im Bereich der Büchsen unter Bildung von Hohlräumen für das Kühlmedium ausgenommen ist (sind) und daß die Büchsen Absätze zur Abstützung und genauen Positionierung der äußeren Einzelplatten aufweisen. Diese Ausführung erleichtert das Zusammenpassen der Einzelteile der Ventilsitzplatte'einerseits und ermöglicht eine von der Dimensionierung der Kanäle weitgehend unabhängige Dimensionierung der Hohlräume für das Kühlmedium.In a further embodiment of the invention it is provided that the middle (s) single plate (s) in the area of the sleeves with the formation of cavities for the cooling medium is (are) excluded and that the sleeves have shoulders for supporting and exact positioning of the outer single plates. This design facilitates the matching of the individual parts of the valve seat plate on the one hand and enables the cavities for the cooling medium to be dimensioned largely independently of the dimensioning of the channels.

Die Büchsen können in bevorzugter weiterer Ausgestaltung der Erfindung im Bereich der Hohlräume eine vergrößerte Wärmeübergangsfläche, vorzugsweise rippenartige Außenkonturen, aufweisen. Zusammen mit der bereits erwähnten Möglichkeit, die Büchsen dünnwandig auszuführen, ergibt sich damit eine besonders gute Wärmeableitung zur Kühlung der am meisten beanspruchten Stellen.In a preferred further embodiment of the invention, the bushes can have an enlarged heat transfer surface, preferably rib-like outer contours, in the region of the cavities. Together with the already mentioned possibility of making the sleeves thin-walled, this results in a particularly good heat dissipation for cooling the most stressed areas.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß die mittlere(n) Einzelplatte(n) über separate Zentrierteile, vorzugsweise eingesetzte, über die Dicke der Ventilsitzplatte durchgehende Hülsen, in ihrer relativen Lage festgelegt ist (sind). Da die Kanäle für das zu steuernde Medium unabhängig von den mittleren Einzelplatten in den eingesetzten Büchsen geführt sind, können die mittleren Einzelplatten, bzw. kann die allenfalls einzige mittlere Einzelplatte, auf die genannte einfache Weise lagefixiert werden.In a further embodiment of the invention it is provided that the middle (s) individual plate (s) is (are) fixed in their relative position by means of separate centering parts, preferably inserted sleeves which are continuous over the thickness of the valve seat plate. Since the channels for the medium to be controlled are guided independently of the central individual plates in the bushings used, the central individual plates, or the possibly only central individual plate, can be fixed in position in the aforementioned simple manner.

Die Büchsen und die Einzelplatten können - wie obenstehend allgemein bereits angesprochen - aus unterschiedlichen Werkstoffen bestehen, was die vielfältigsten Möglichkeiten zur Berücksichtigung der speziellen Belastungen bzw. auch Herstellungsverfahren ergibt.As already mentioned above, the bushes and the individual plates can consist of different materials, which gives the most diverse possibilities for taking into account the special loads and also the production processes.

In besonders bevorzugter Ausgestaltung der Erfindung ist schließlich vorgesehen, daß die Büchsen mit den Einzelplatten verlötet sind, womit sich dichte und dauerhafte Verbindungen auch in weiten Grenzen unterschiedlicher Werkstoffe erzielen lassen.In a particularly preferred embodiment of the invention, it is finally provided that the sleeves are soldered to the individual plates, with which one can allow tight and permanent connections to be achieved even within wide limits of different materials.

Die Erfindung wird im folgenden noch anhand des in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Fig. 1 zeigt dabei einen Querschnitt durch eine erfindungsgemäße Ventilsitzplatte entlang der Linie I-I in Fig. 2 und Fig. 2 zeigt eine Draufsicht auf die Ventilplatte nach Fig. 1.The invention is explained in more detail below with reference to the embodiment shown in the drawing. 1 shows a cross section through a valve seat plate according to the invention along the line I-I in FIG. 2, and FIG. 2 shows a plan view of the valve plate according to FIG. 1.

Die dargestellte Ventilsitzplatte 1 für einen nicht dargestellten Kolbenkompressor oder dergleichen weist drei übereinander liegende Einzelplatten 2, 3, 4 auf, in denen durchgehende Kanäle 5 für das zu steuernde Druckmedium, ein Hohlraum 6 für Kühlmedium, und ein Saugraum 7 für die Zuführung des zu komprimierenden Mediums ausgebildet sind. Die Kanäle 5 sind in über die gesamte Dicke der Ventilsitzplatte durchgehenden, gegenüber dem Hohlraum 6 (könnte auch von mehreren unterteilten und an Zu- und Ableitung für Kühlmedium angeschlossenen Hohlräumen gebildet sein) abgedichteten Büchsen 8 angeordnet und werden im hier nicht dargestellten zusammengebauten Zustand des gesamten Ventils an der oberen Seite von einer federbelasteten Ventilklappe oder dergleichen abgedeckt. Der Hohlraum 6 wird hier von einer entsprechenden Ausnehmung der mittleren Einzelplatte 3 definiert, deren Kontur in Fig. 2 strichliert angedeutet und mit 9 bezeichnet ist. An der Ober- und Unterseite ist der Hohlraum 6 durch die Einzelplatten 2 bzw. 4 begrenzt und weist Überströmöffnungen 10 zum nicht dargestellten Zylinderkopf an den Ein- bzw. Ausströmseiten auf.The valve seat plate 1 shown for a piston compressor or the like, not shown, has three superimposed individual plates 2, 3, 4, in which continuous channels 5 for the pressure medium to be controlled, a cavity 6 for cooling medium, and a suction chamber 7 for the supply of the to be compressed Medium are trained. The channels 5 are arranged in bushes 8 which are sealed over the entire thickness of the valve seat plate and sealed with respect to the cavity 6 (could also be formed by a plurality of cavities which are divided and connected to supply and discharge lines for cooling medium) and are assembled in the assembled state (not shown here) of the whole Valve on the upper side covered by a spring-loaded valve flap or the like. The cavity 6 is defined here by a corresponding recess in the central individual plate 3, the contour of which is indicated by dashed lines in FIG. 2 and is designated by 9. On the top and bottom, the cavity 6 is delimited by the individual plates 2 and 4 and has overflow openings 10 to the cylinder head (not shown) on the inflow and outflow sides.

Der Saugraum 7 ist an der in der Darstellung unteren Seite durch die untere Einzelplatte 4 begrenzt, welche Einlaßschlitze 11 aufweist, die im zusammengebauten Zustand des gesamten Ventils von der Unterseite her mittels einer entsprechenden Ventilplatte überdeckt sind. Die mittlere Einzelplatte 3 weist im Bereich des Saugraumes 7 drei Stege 12 auf - an der Oberseite ist der Saugraum 7 über eine Öffnung, deren Kontur in Fig. 2 mit 13 bezeichnet ist, in der oberen Einzelplatte 2 nach oben hin offen und geht üblicherweise unmittelbar in eine angeschlossene Ansaugleitung (hier nicht dargestellt) oder dergleichen über.The suction chamber 7 is delimited on the lower side in the illustration by the lower individual plate 4, which has inlet slots 11 which are covered from the underside in the assembled state of the entire valve by means of a corresponding valve plate. The middle single plate 3 has three webs 12 in the area of the suction space 7 - at the top, the suction space 7 is open at the top through an opening, the contour of which is designated by 13 in FIG. 2, in the upper single plate 2 and usually goes directly into one connected Intake line (not shown here) or the like.

Die mittlere Einzelplatte 3 ist also im Bereich der Büchsen 8 für die das Druckmedium führenden Kanäle 5 unter Bildung des Hohlraumes 6 ausgenommen, wobei die Büchsen 8 hier im Bereich ihres unteren Endes Absätze 14 zur Abstützung und genauen Positionierung an der unteren Einzelplatte 4 aufweisen. Im Bereich der oberen Einzelplatte 2 sind vergrößerte Bohrungen 15 vorgesehen, die das Einstecken der Büchsen 8 samt der Ansätze 14 von der Oberseite her erlauben. Im Bereich des Hohlraumes 6, bzw. der gegebenenfalls einzelnen Hohlräume 6, ist eine vergrößerte Wärmeübergangsfläche an der Außenseite der Büchsen 8 vorgesehen, die dafür vorzugsweise rippenartige Außenkontur 16 aufweisen.The middle single plate 3 is thus excluded in the area of the sleeves 8 for the channels 5 carrying the pressure medium to form the cavity 6, the sleeves 8 here having paragraphs 14 in the area of their lower end for support and precise positioning on the lower single plate 4. Enlarged bores 15 are provided in the area of the upper individual plate 2, which allow the sleeves 8 and the lugs 14 to be inserted from the top. In the area of the cavity 6, or the possibly individual cavities 6, an enlarged heat transfer surface is provided on the outside of the bushes 8, which preferably have a rib-like outer contour 16 for this purpose.

Die mittlere Einzelplatte 3 ist über eingesetzte, über die Dicke der Ventilsitzplatte 1 durchgehende, separate Hülsen 17 in ihrer relativen Lage festgelegt, wobei zufolge der Unabhängigkeit dieser Lagefestlegung von der Ausbildung der Kanäle 5 in den Büchsen 8 keine besondere Genauigkeit in diesem Zusammenhang erforderlich ist.The middle single plate 3 is fixed in its relative position by inserted separate sleeves 17, which are continuous over the thickness of the valve seat plate 1, whereby due to the independence of this position fixing of the design of the channels 5 in the bushes 8, no particular accuracy is required in this connection.

Die Büchsen 8 können aus von den Einzelplatten 2, 3, 4 unterschiedlichem Werkstoff bestehen und mit den Einzelplatten 2, 4 verlötet sein, was die Berücksichtigung verschiedenster Anforderungen an die Werkstoffwahl erlaubt.The sleeves 8 can be made of different material from the individual plates 2, 3, 4 and can be soldered to the individual plates 2, 4, which allows a wide variety of requirements to be taken into account when selecting the material.

Durch die Möglichkeit die Wandstärken der Büchsen 8 relativ dünn auszuführen und die Oberfläche zum Kühlmittelstrom durch die Gestaltung der Außenkontur 16 der Büchsen zu vergrößern, kann das Ventil insgesamt in der Leistung (Liefergrad/Enddruck) gesteigert werden - die auftretenden höheren Temperaturen können durch die genannten Verbesserungen leicht abgeführt und damit beherrscht werden.Due to the possibility of making the wall thicknesses of the sleeves 8 relatively thin and to increase the surface area for the coolant flow by designing the outer contour 16 of the sleeves, the valve as a whole can Performance (degree of delivery / final pressure) can be increased - the higher temperatures that occur can be easily dissipated by the above-mentioned improvements and can thus be controlled.

Abgesehen von der dargestellten Ausbildung der Zentrierung bzw. Abstützung der Büchsen 8 in der oberen und der unteren Einzelplatte 2, 4 können diese Teilfunktionen aber natürlich auch vertauscht oder aber an beiden Seiten vorgesehen werden. Ebenso kann bedarfsweise die Lagefestlegung der mittleren Einzelplatte 3, bzw. mehrerer derartiger Einzelplatten, auch anders als mit den dargestellten Hülsen 17 vorgenommen werden.Apart from the illustrated design of the centering or support of the sleeves 8 in the upper and lower individual plates 2, 4, these sub-functions can of course also be interchanged or provided on both sides. If necessary, the position of the middle single plate 3, or several such single plates, can also be determined differently than with the sleeves 17 shown.

Claims (6)

  1. A valve-seat plate, in particular for piston compressors, having at least three individual plates which are arranged one above the other and which have through ducts for the medium to be controlled on the one hand and define cavities between themselves for cooling medium on the other hand, characterized in that the ducts (5) are arranged in bushes (8) passing through the thickness of the valve-seat plate (1) and sealed off from the cavities (6).
  2. A valve-seat plate according to Claim 1, characterized in that the middle individual plate or plates (3) is or are cut away in the region of the bushes (8) so as to form cavities (6) for the cooling medium, and the bushes (8) have offsets (14) for supporting them and for precisely positioning the outer individual plates (2, 4).
  3. A valve-seat plate according to Claim 2, characterized in that the bushes (8) have an enlarged heat-transfer area, preferably rib-like external profiles (16), in the region of the cavities (6).
  4. A valve-seat plate according to Claim 2 or 3, characterized in that the middle individual plate or plates (3) is or are secured in their relative position by way of separate centring members, preferably sleeves (17) passing through the thickness of the valve-seat plate (1).
  5. A valve-seat plate according to one of Claims 1 to 4, characterized in that the bushes (8) and the individual plates (2, 3, 4) consist of different materials.
  6. A valve-seat plate according to Claim 5, characterized in that the bushes (8) are soldered onto the individual plates (2, 3, 4).
EP19910890308 1991-01-02 1991-12-20 Valve plate for piston compressors Expired - Lifetime EP0494590B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0000491A AT402089B (en) 1991-01-02 1991-01-02 VALVE SEAT PLATE FOR PISTON COMPRESSORS
AT4/91 1991-01-02

Publications (2)

Publication Number Publication Date
EP0494590A1 EP0494590A1 (en) 1992-07-15
EP0494590B1 true EP0494590B1 (en) 1994-06-22

Family

ID=3479092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910890308 Expired - Lifetime EP0494590B1 (en) 1991-01-02 1991-12-20 Valve plate for piston compressors

Country Status (4)

Country Link
US (1) US5222516A (en)
EP (1) EP0494590B1 (en)
AT (1) AT402089B (en)
DE (1) DE59102015D1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP3763941B1 (en) * 2019-07-10 2021-12-01 ZF CV Systems Europe BV Axial piston compressor of an apparatus for supplying pressurized air in automobiles

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EP0843784B1 (en) * 1995-08-11 2001-11-14 KNORR-BREMSE SYSTEME FÜR NUTZFAHRZEUGE GmbH Valve plate for piston compressor, especially for air compression in motor vehicles
GB9715741D0 (en) * 1997-07-26 1997-10-01 Knorr Bremse Systeme Improvements to gas compressors
US6116874A (en) * 1997-07-26 2000-09-12 Knorr-Bremse Systems For Commercial Vehicles Limited Gas compressors
GB9715742D0 (en) * 1997-07-26 1997-10-01 Knorr Bremse Systeme Gas compressors
CA2767222C (en) * 2009-07-08 2016-11-08 Aerocrine Ab Check valve
AT509081B1 (en) * 2010-04-08 2011-06-15 Hoerbiger Kompressortech Hold HOLLOW VALVE PLATE
DE102021121592A1 (en) 2021-08-19 2023-02-23 Fbz Gmbh Low-noise piston compressor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3763941B1 (en) * 2019-07-10 2021-12-01 ZF CV Systems Europe BV Axial piston compressor of an apparatus for supplying pressurized air in automobiles

Also Published As

Publication number Publication date
EP0494590A1 (en) 1992-07-15
US5222516A (en) 1993-06-29
ATA491A (en) 1996-06-15
DE59102015D1 (en) 1994-07-28
AT402089B (en) 1997-01-27

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