EP0843784B1 - Valve plate for piston compressor, especially for air compression in motor vehicles - Google Patents

Valve plate for piston compressor, especially for air compression in motor vehicles Download PDF

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Publication number
EP0843784B1
EP0843784B1 EP96934340A EP96934340A EP0843784B1 EP 0843784 B1 EP0843784 B1 EP 0843784B1 EP 96934340 A EP96934340 A EP 96934340A EP 96934340 A EP96934340 A EP 96934340A EP 0843784 B1 EP0843784 B1 EP 0843784B1
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EP
European Patent Office
Prior art keywords
valve
valve plate
pressure
plate
die
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
EP96934340A
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German (de)
French (fr)
Other versions
EP0843784A2 (en
Inventor
Dieter Spurny
Jakob Theiss
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.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
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Filing date
Publication date
Priority claimed from DE19631415A external-priority patent/DE19631415C2/en
Application filed by Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Publication of EP0843784A2 publication Critical patent/EP0843784A2/en
Application granted granted Critical
Publication of EP0843784B1 publication Critical patent/EP0843784B1/en
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Expired - Lifetime legal-status Critical Current

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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 plate according to the preamble of claim 1.
  • Valve plates for piston compressors which are particularly, but not exclusively are provided for the generation of compressed air in motor vehicles exist according to a known construction from two individual plates, one of which in generally as a steel plate and the other containing coolant flow channels Cast plate is formed.
  • JP-A-59 208 181 discloses a valve plate for a compressor which consists of two interconnected plate halves. With this valve plate, the lines belonging to the valve elements after connecting the two Shaped plate halves.
  • the object of the invention consists of plate halves to simplify existing valve plates or valve supports in terms of production technology, the possibilities of adequate cooling by means of a in the valve plate located coolant channel, the shielding of the pressure holes or pressure openings against exposure to heat and the design of the valve seats for the Pressure holes are to be optimized.
  • valve plate By designing the valve plate from two each made of die-cast material existing single panels, the possibilities of production are optimized, except for the sealing surface machining saves all mechanical processing can.
  • the split design consisting of die-cast plates also enables most complicated cooling water routing, especially to direct cooling water to the hottest point, namely to lead to the pressure holes or pressure openings.
  • the high-strength connection of both die-cast plates by gluing adequate sealing is guaranteed; to optimize the tightness in the The area of the pressure openings can be inserted into these sleeves.
  • Steel rivets can also be provided, which are more advantageous as tubular rivets Way both for mutual bracing of the valve plate halves as well Shielding the glued intermediate area of the two valve plate halves against the effects of heat.
  • grooves are possible on both the pressure side and the suction side to be provided for elastomer seals, whereby the elastomer seals face each other able to seal the cylinder or the cylinder head. Even between the Both plates can have elastomer seals in grooves.
  • the valve plate 1 shown in Figure 1 of the drawing according to the invention from a die-casting plate 3 and a die-casting plate 5.
  • Die-casting plate 3 is the Pressure side of the piston compressor facing, while the die casting plate 5 is provided on the suction side.
  • the die-cast plate 3 and 5 each consist of one high-strength aluminum alloy, with a special due to the existing cast skin high resistance is achieved.
  • all mechanical processing with the exception sealing surface machining (both surfaces) can be saved.
  • FIG. 1 as a sectional view of the valve plate, which in the region of two pressure bores or pressure openings 7, reveals that a coolant channel in the valve plate 9 runs.
  • the coolant channel 9 is preferably in the area of the pressure openings 7 and has (not shown) inlet and outlet openings for the coolant.
  • the in the drawing in Figure 1 in section and in Figure 2 in Printing openings 7 shown in plan view is one (not shown) assigned pressure lamella, which is compared to the in Figure 3 in Enlarged sectional view shown valve seats 11 moves and each in Area of bores 13 held by means of (not shown) fasteners is.
  • suction lamella which is not detailed in detail explained way is held on the suction side of the valve plate and opposite Suction openings 15 acts.
  • the invention is not special Embodiment of a valve or lamella construction for the pressure and suction side fixed, albeit valve fins with simultaneous coverage of several Openings for both the pressure side and the suction side are preferably usable.
  • the two die-cast plates 3 and 5 can be coated or glued be connected or sealed in the area of the sealing surface 16. Also one metal gasket coated on both sides between the die-cast plates can be provided his.
  • a groove 17 for each on the suction and / or pressure side to provide an elastomer seal.
  • the illustrated embodiment is the groove 17 on the suction side, i.e. at the Cylinder-facing side of the die-cast plate 5 is provided.
  • Such a groove with an elastomer seal can also be on the pressure side, i.e. at the top of the Die casting plate 3 may be provided; it is also possible to have a groove To provide an elastomer seal between the two die-cast plates.
  • sleeves 19 are inserted in FIG the pressure openings 7 of the valve plate 1 shown.
  • these sleeves hot compressed air separated from the sealants or adhesives used, which are used for Connection of the two die-cast plates 3 and 5 are used.
  • the Connection of the two die-cast plates gives a certain degree of stability.
  • the use of such sleeves 19 proves to be of particular advantage, since in the passage area of the pressure openings 7 in question the highest temperatures adjust and with conventionally split valve plates the risk of thermal Destruction of the sealant existed.
  • the inflow and outflow edges of the openings or through the valve plate Holes i.e. the pressure openings and the suction openings, are through Rounding or profiling designed so that flow losses on a Minimum be reduced.
  • valve plate 4 and 5 is a valve plate according to a further embodiment shown according to the invention.
  • the valve plate consists in a corresponding manner two die-cast plates 3 and 5, which with pressure holes or pressure openings 7th are provided.
  • the sleeve 19 of the arrangement of Figure 3 are in the Pressure openings 7 steel rivets 21 used and by way of the riveting process braced against the plate halves. So the steel rivets don't just have them Function, the separation area between the plate halves opposite the To shield heat from the compressed air generated, they also convey one Holding and tensioning function compared to the two plate halves, which in particular in the area of the pressure openings due to the considerable temperature differences is of particular advantage.
  • the steel rivets are shown as pipe rivets formed, which carry the rivet head located at the lower end in Figure 5 and the opposite end formed in the riveting process in a known manner becomes.
  • FIGS. 4 and 5 there are two valve catchers 23 shown, which in a known manner to intercept the also shown, serve the valve openings 7 covering valve openings 7.

Description

Die Erfindung betrifft eine Ventilplatte nach dem Gattungsbegriff des Patentanspruches 1.The invention relates to a valve plate according to the preamble of claim 1.

Ventilplatten für Kolbenverdichter, welche insbesondere, jedoch nicht ausschließlich für die Drucklufterzeugung in Kraftfahrzeugen vorgesehen sind, bestehen gemäß einer bekannten Konstruktion aus zwei einzelnen Platten, von welchen eine im allgemeinen als Stahlplatte und die andere als Kühlmittel-Strömungskanäle enthaltende Gußplatte ausgebildet ist.Valve plates for piston compressors, which are particularly, but not exclusively are provided for the generation of compressed air in motor vehicles exist according to a known construction from two individual plates, one of which in generally as a steel plate and the other containing coolant flow channels Cast plate is formed.

Die JP-A-59 208 181 offenbart eine Ventilplatte für einen Verdichter, die aus zwei miteinander verbundenen Plattenhälften besteht. Bei dieser Ventilplatte werden die zu den Ventilelementen gehörenden Leitungen nach dem Verbinden der beiden Plattenhälften geformt.JP-A-59 208 181 discloses a valve plate for a compressor which consists of two interconnected plate halves. With this valve plate, the lines belonging to the valve elements after connecting the two Shaped plate halves.

Davon ausgehend besteht die Aufgabe der Erfindung darin, aus Plattenhälften bestehende Ventilplatten bzw. Ventilträger fertigungstechnisch zu vereinfachen, wobei die Möglichkeiten ausreichender Kühlung mittels eines in der Ventilplatte befindlichen Kühlmittelkanals, die Abschirmung der Druckbohrungen bzw. Drucköffnungen gegenüber Hitzeeinwirkung und die Ausgestaltung der Ventilsitze für die Druckbohrungen optimiert werden sollen.Proceeding from this, the object of the invention consists of plate halves to simplify existing valve plates or valve supports in terms of production technology, the possibilities of adequate cooling by means of a in the valve plate located coolant channel, the shielding of the pressure holes or pressure openings against exposure to heat and the design of the valve seats for the Pressure holes are to be optimized.

Zur Lösung dieser Aufgabe dienen die Merkmale nach dem Kennzeichnungsteil des Patentanspruches 1.To solve this problem, the features according to the labeling part of the Claim 1.

Durch die Ausgestaltung der Ventilplatte aus zwei jeweils aus Druckgußmaterial bestehenden Einzelplatten sind die Möglichkeiten der Fertigung optimiert, da bis auf die Dichtflächenbearbeitung alle mechanischen Bearbeitungen eingespart werden können. Die aus Druckgußplatten bestehende, geteilte Ausführung ermöglicht auch komplizierteste Kühlwasserführungen, insbesondere um Kühlwasser direkt an die heißeste Stelle, nämlich an die Druckbohrungen bzw. Drucköffnungen heranzuführen. Die hochfeste Verbindung beider Druckgußplatten durch Verklebung bei ausreichender Abdichtung ist gewährleistet; zur Optimierung der Dichtfestigkeit im Bereich der Drucköffnungen sind in diese Hülsen einsetzbar. Anstelle der Hülsen können auch Stahlniete vorgesehen sein, welche als Rohrniete in vorteilhafter Weise sowohl zur gegenseitigen Verspannung der Ventilplattenhälften als auch zur Abschirmung des verklebten Zwischenbereiches der beiden Ventilplattenhälften gegenüber Hitzeeinwirkung vorgesehen sind. Infolge der Druckgußausführung ist es darüberhinaus möglich, sowohl an der Druckseite als auch an der Saugseite Nuten für Elastomerdichtungen vorzusehen, wobei die Elastomerdich- tungen gegenüber dem Zylinder bzw. dem Zylinderkopf zu dichten vermögen. Auch zwischen den beiden Platte können Elastomerdichtungen in Nuten vorgesehen sein.By designing the valve plate from two each made of die-cast material existing single panels, the possibilities of production are optimized, except for the sealing surface machining saves all mechanical processing can. The split design consisting of die-cast plates also enables most complicated cooling water routing, especially to direct cooling water to the hottest point, namely to lead to the pressure holes or pressure openings. The high-strength connection of both die-cast plates by gluing adequate sealing is guaranteed; to optimize the tightness in the The area of the pressure openings can be inserted into these sleeves. Instead of the sleeves Steel rivets can also be provided, which are more advantageous as tubular rivets Way both for mutual bracing of the valve plate halves as well Shielding the glued intermediate area of the two valve plate halves against the effects of heat. As a result of the die-cast design, it is in addition, grooves are possible on both the pressure side and the suction side to be provided for elastomer seals, whereby the elastomer seals face each other able to seal the cylinder or the cylinder head. Even between the Both plates can have elastomer seals in grooves.

Vorteilhafte Ausgestaltungen und Weiterbildungen sind in weiteren Patenansprüchen aufgeführt.Advantageous refinements and developments are in further claims listed.

Die Erfindung ist nachfolgend anhand eines Ausführungbeispiels unter Bezugnahme auf die beigefügte Zeichnung erläutert.

  • Figur 1 ist eine durch zwei Drucköffnungen verlaufende Schnittansicht einer Ventilplatte nach der Erfindung;
  • Figur 2 ist eine Draufsicht auf die Saugseite der in Figur 1 wiedergegebenen Ventilplatte; und
  • Figur 3 ist eine vergrößte Teilschnittansicht der Ventilplatte nach Figur 1;
  • Figur 4 ist eine Draufsicht auf eine Ventilplatte nach einer weiteren Ausführungsform der Erfindung unter Darstellung zweier Ventilfänger;
  • Figur 5 ist eine Schnittansicht von Linie V-V in Figur 4 unter Darstellung der Ventilplatte mit die Drucköffnungen durchsetzenden Stahlniete.
    • The invention is explained below using an exemplary embodiment with reference to the accompanying drawings.
  • Figure 1 is a sectional view of a valve plate according to the invention through two pressure openings;
  • Figure 2 is a top view of the suction side of the valve plate shown in Figure 1; and
  • Figure 3 is an enlarged partial sectional view of the valve plate of Figure 1;
  • FIG. 4 is a plan view of a valve plate according to a further embodiment of the invention, showing two valve catchers;
  • Figure 5 is a sectional view of line VV in Figure 4 showing the valve plate with steel rivets penetrating the pressure openings.

    • Die in Figur 1 der Zeichnung dargestellte Ventilplatte 1 gemäß der Erfindung besteht aus einer Druckgußplatte 3 und einer Druckgußplatte 5. Die Druckgußplatte 3 ist der Druckseite des Kolbenverdichters zugewandt, während die Druckgußplatte 5 saugseitig vorgesehen ist. Die Druckgußplatte 3 und 5 bestehen jeweils aus einer hochfesten Alulegierung, wobei durch die vorhandene Gußhaut eine besonders hohe Widerstandfähigkeit erzielt wird. Darüber hinaus können durch die Druckgußausführungen der beiden Plattenhälften alle mechanischen Bearbeitungen mit Ausnahme der Dichtflächenbearbeitung (beide Flächen) eingespart werden. The valve plate 1 shown in Figure 1 of the drawing according to the invention from a die-casting plate 3 and a die-casting plate 5. Die-casting plate 3 is the Pressure side of the piston compressor facing, while the die casting plate 5 is provided on the suction side. The die-cast plate 3 and 5 each consist of one high-strength aluminum alloy, with a special due to the existing cast skin high resistance is achieved. In addition, through the die-cast designs of the two plate halves all mechanical processing with the exception sealing surface machining (both surfaces) can be saved.

    Figur 1 als Schnittansicht der Ventilplatte, welche im Bereich zweier Druckbohrungen bzw. Drucköffnungen 7 verläuft, offenbart, daß in der Ventilplatte ein Kühlmittelkanal 9 verläuft. Der Kühlmittelkanal 9 befindet sich vorzugsweise im Bereich der Drucköffnungen 7 und weist (nicht dargestellte) Zulauf- und Ablauföffnungen für das Kühlmittel auf. Den in der Zeichnung in Figur 1 im Schnitt und in Figur 2 in Draufsicht dargestellten Drucköffnungen 7 ist auf der Druckseite jeweils eine (nicht dargestellte) Drucklamelle zugeordnet, welche sich gegenüber den in Figur 3 in vergrößerter Schnittansicht dargestellten Ventilsitzen 11 bewegt und jeweils im Bereich von Bohrungen 13 mittels (nicht dargestellter) Befestigungselemente gehalten ist. Den in der Draufsicht nach Figur 2 dargestellten Saugöffnungen 15 ist eine (nicht dargestellte) Sauglamelle zugeordnet, welche in im einzelnen nicht näher erläuterter Weise an der Saugseite der Ventilplatte gehaltert ist und gegenüber den Saugöffnungen 15 wirkt. Grundsätzlich ist die Erfindung nicht auf die besondere Ausführungsform einer Ventil- oder Lamellenkonstruktion für die Druck- und Saugseite festgelegt, wenngleich Ventillamellen mit gleichzeitiger Überdeckung mehrerer Öffnungen sowohl für Druck- als auch Saugseite bevorzugt verwendbar sind.Figure 1 as a sectional view of the valve plate, which in the region of two pressure bores or pressure openings 7, reveals that a coolant channel in the valve plate 9 runs. The coolant channel 9 is preferably in the area of the pressure openings 7 and has (not shown) inlet and outlet openings for the coolant. The in the drawing in Figure 1 in section and in Figure 2 in Printing openings 7 shown in plan view is one (not shown) assigned pressure lamella, which is compared to the in Figure 3 in Enlarged sectional view shown valve seats 11 moves and each in Area of bores 13 held by means of (not shown) fasteners is. The suction openings 15 shown in the plan view according to FIG. 2 is one Associated (not shown) suction lamella, which is not detailed in detail explained way is held on the suction side of the valve plate and opposite Suction openings 15 acts. Basically, the invention is not special Embodiment of a valve or lamella construction for the pressure and suction side fixed, albeit valve fins with simultaneous coverage of several Openings for both the pressure side and the suction side are preferably usable.

    Die beiden Druckgußplatten 3 und 5 können durch Beschichtung oder Verklebung im Bereich der Dichtfläche 16 verbunden bzw. abgedichtet werden. Auch eine beidseitig beschichtete Metalldichtung zwischen den Druckgußplatten kann vorgesehen sein. Infolge der Druckgußausführung der beiden Druckgußplatten 3 und 5 ist es in einfacher Weise möglich, an Saug- und/oder Druckseite jeweils eine Nut 17 für eine Elastomerdichtung vorzusehen. Im Falle der in Figur 1 und 2 dargestellten Ausführungsform ist die Nut 17 an der Saugseite, d.h. an der dem Zylinder zugewandten Seite der Druckgußplatte 5 vorgesehen. Eine derartige Nut mit Elastomerdichtung kann auch an der Druckseite, d.h. an der Oberseite der Druckgußplatte 3 vorgesehen sein; es ist auch möglich, zusätzlich eine Nut mit Elastomerdichtung zwischen den beiden Druckgußplatten vorzusehen.The two die-cast plates 3 and 5 can be coated or glued be connected or sealed in the area of the sealing surface 16. Also one metal gasket coated on both sides between the die-cast plates can be provided his. As a result of the die-cast design of the two die-cast plates 3 and 5 it is possible in a simple manner, a groove 17 for each on the suction and / or pressure side to provide an elastomer seal. In the case of FIGS. 1 and 2 The illustrated embodiment is the groove 17 on the suction side, i.e. at the Cylinder-facing side of the die-cast plate 5 is provided. Such a groove with an elastomer seal can also be on the pressure side, i.e. at the top of the Die casting plate 3 may be provided; it is also possible to have a groove To provide an elastomer seal between the two die-cast plates.

    In der vergrößerten Teilschnittansicht nach Figur 3 sind Hülsen 19 als Einlegeteile in den Drucköffnungen 7 der Ventilplatte 1 dargestellt. Mit Hilfe dieser Hülsen wird die heiße Druckluft von den verwendeten Dichtmitteln bzw. Klebern getrennt, welche zur Verbindung der beiden Druckgußplatten 3 und 5 verwendet werden. Zudem wird der Verbindung der beiden Druckgußplatten ein gewisses Maß an Stabilität verliehen. Der Einsatz derartiger Hülsen 19 erweist sich von besonderem Vorteil, da sich in dem fraglichen Durchgangsbereich der Drucköffnungen 7 die höchsten Temperaturen einstellen und bei herkömmlich geteilten Ventilplatten die Gefahr der thermischen Zerstörung der Dichtmittel bestand.In the enlarged partial sectional view according to FIG. 3, sleeves 19 are inserted in FIG the pressure openings 7 of the valve plate 1 shown. With the help of these sleeves hot compressed air separated from the sealants or adhesives used, which are used for Connection of the two die-cast plates 3 and 5 are used. In addition, the Connection of the two die-cast plates gives a certain degree of stability. The use of such sleeves 19 proves to be of particular advantage, since in the passage area of the pressure openings 7 in question the highest temperatures adjust and with conventionally split valve plates the risk of thermal Destruction of the sealant existed.

    Die Ein- und Ausströmkanten der die Ventilplatte durchsetzenden Öffnungen bzw. Bohrungen, also der Drucköffnungen und der Saugöffnungen, werden durch Verrundung bzw. Profilierung so gestaltet, daß Strömungsverluste auf ein Mindestmaß herabgesetzt werden.The inflow and outflow edges of the openings or through the valve plate Holes, i.e. the pressure openings and the suction openings, are through Rounding or profiling designed so that flow losses on a Minimum be reduced.

    In den Figuren 4 und 5 ist eine Ventilplatte gemäß einer weiteren Ausführungsform nach der Erfindung dargestellt. Die Ventilplatte besteht in entsprechender Weise aus zwei Druckgußplatten 3 und 5, welche mit Druckbohrungen bzw. Drucköffnungen 7 versehen sind. Anstelle der Hülse 19 der Anordnung nach Figur 3 sind in die Drucköffnungen 7 Stahlniete 21 eingesetzt und im Wege des Nietvorganges gegenüber den Plattenhälfen verspannt. Die Stahlniete besitzen also nicht nur die Funktion, den Trennbereich zwischen den Plattenhälften gegenüber der Hitzeeinwirkung der erzeugten Druckluft abzuschirmen, sie vermitteln auch eine Halte- und Spannfunktion gegenüber den beiden Plattenhälften, was insbesondere im Bereich der Drucköffnungen infolge der beträchtlichen Temperaturdifferenzen von besonderem Vorteil ist. Die Stahlniete sind gemäß Darstellung als Rohrniete ausgebildet, welche den in Figur 5 am unteren Ende befindlichen Nietkopf tragen und deren entgegengesetztes Ende im Nietvorgang in bekannter Weise geformt wird. Bei der Ausführungsform nach den Figuren 4 und 5 sind zwei Ventilfänger 23 dargestellt, welche in bekannter Weise zum Abfangen der gleichfalls dargestellten, die Drucköffnungen 7 überdeckenden Ventillamelle (n) 25 dienen. 4 and 5 is a valve plate according to a further embodiment shown according to the invention. The valve plate consists in a corresponding manner two die-cast plates 3 and 5, which with pressure holes or pressure openings 7th are provided. Instead of the sleeve 19 of the arrangement of Figure 3 are in the Pressure openings 7 steel rivets 21 used and by way of the riveting process braced against the plate halves. So the steel rivets don't just have them Function, the separation area between the plate halves opposite the To shield heat from the compressed air generated, they also convey one Holding and tensioning function compared to the two plate halves, which in particular in the area of the pressure openings due to the considerable temperature differences is of particular advantage. The steel rivets are shown as pipe rivets formed, which carry the rivet head located at the lower end in Figure 5 and the opposite end formed in the riveting process in a known manner becomes. In the embodiment according to FIGS. 4 and 5 there are two valve catchers 23 shown, which in a known manner to intercept the also shown, serve the valve openings 7 covering valve openings 7.

    BezugszeichenlisteReference list

    11
    VentilplatteValve plate
    33rd
    DruckgußplatteDie-cast plate
    55
    DruckgußplatteDie-cast plate
    77
    DrucköffnungPressure opening
    99
    KühlmittelkanalCoolant channel
    1111
    VentilsitzValve seat
    1313
    Bohrungdrilling
    1515
    SaugöffnungSuction opening
    1616
    DichtflächeSealing surface
    1717th
    NutGroove
    1919th
    HülseSleeve
    2121
    StahlnietSteel rivet
    2323
    VentilfängerValve catcher
    2525th
    VentillamelleValve lamella

    Claims (8)

    1. Valve plate for piston compressors, especially for compressed-air generation in motor vehicles, consisting of two plate halves connected to each other and supporting pressure and suction valve elements, characterised by the following features:
      (a) the two plate halves of said valve plate (1) are made of die-cast plates (3; 5);
      (b) at least one pressure opening (7) on the pressure side of said valve plate (1) is surrounded by a valve seat (11) for said pressure valve element, which consists of the material of said die-cast plate; and
      (c) a protective body is inserted into said at least one pressure opening (7) for protection of the gap region of the joint between said two die-cast plate (3; 5) from thermal influence.
    2. Valve plate according to Claim 1, characterised in that said protective body consists of a sleeve (19).
    3. Valve plate according to Claim 1, characterised in that said protective body consists of a steel rivet (21).
    4. Valve plate according to any of the preceding Claims, characterised by a plurality of pressure openings (7) whereof each includes a protective body (sleeve 19; steel rivet 21).
    5. Valve plate according to any of the preceding Claims, characterised by a coolant duct (9) passing through said valve plate (1), which duct is formed by recesses in said mutually facing plate halves.
    6. Valve plate according to any of the preceding Claims, characterised in that at least one groove (17) is provided for an elastomer joint in the suction and/or pressure side of said valve plate (1).
    7. Valve plate according to any of the preceding Claims, characterised in that the admission and discharge edges of said pressure and suction openings are profiled or rounded off, respectively, so as to minimise the flow losses.
    8. Valve plate according to any of the preceding Claims, characterised in that said pressure valve element consists of a valve leaf (25) stayed opposite to a valve catch (23).
    EP96934340A 1995-08-11 1996-08-07 Valve plate for piston compressor, especially for air compression in motor vehicles Expired - Lifetime EP0843784B1 (en)

    Applications Claiming Priority (5)

    Application Number Priority Date Filing Date Title
    DE19529685 1995-08-11
    DE19529685 1995-08-11
    DE19631415A DE19631415C2 (en) 1995-08-11 1996-08-06 Valve plate for piston compressors, in particular for the generation of compressed air in motor vehicles
    DE19631415 1996-08-06
    PCT/DE1996/001476 WO1997007336A2 (en) 1995-08-11 1996-08-07 Valve plate for piston compressor, especially for air compression in motor vehicles

    Publications (2)

    Publication Number Publication Date
    EP0843784A2 EP0843784A2 (en) 1998-05-27
    EP0843784B1 true EP0843784B1 (en) 2001-11-14

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP96934340A Expired - Lifetime EP0843784B1 (en) 1995-08-11 1996-08-07 Valve plate for piston compressor, especially for air compression in motor vehicles

    Country Status (4)

    Country Link
    US (1) US6016833A (en)
    EP (1) EP0843784B1 (en)
    BR (1) BR9610238A (en)
    WO (1) WO1997007336A2 (en)

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    AT509081B1 (en) * 2010-04-08 2011-06-15 Hoerbiger Kompressortech Hold HOLLOW VALVE PLATE
    BRPI1101993A2 (en) * 2011-04-28 2014-02-11 Whirlpool Sa Valve Arrangement for Hermetic Compressors
    US10436187B2 (en) 2015-10-29 2019-10-08 Emerson Climate Technologies, Inc. Cylinder head assembly for reciprocating compressor

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    Also Published As

    Publication number Publication date
    BR9610238A (en) 1999-06-15
    WO1997007336A2 (en) 1997-02-27
    US6016833A (en) 2000-01-25
    EP0843784A2 (en) 1998-05-27
    WO1997007336A3 (en) 1997-04-10

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