EP0109480B1 - Arrangement for interrupting the delivery of a piston compressor - Google Patents

Arrangement for interrupting the delivery of a piston compressor Download PDF

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Publication number
EP0109480B1
EP0109480B1 EP83105603A EP83105603A EP0109480B1 EP 0109480 B1 EP0109480 B1 EP 0109480B1 EP 83105603 A EP83105603 A EP 83105603A EP 83105603 A EP83105603 A EP 83105603A EP 0109480 B1 EP0109480 B1 EP 0109480B1
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EP
European Patent Office
Prior art keywords
piston
compressor
actuating rod
auxiliary
compressor piston
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
Application number
EP83105603A
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German (de)
French (fr)
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EP0109480A1 (en
Inventor
Arno Christoleit
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.)
Wabco Westinghouse Fahrzeugbremsen GmbH
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Wabco Westinghouse Fahrzeugbremsen GmbH
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Publication date
Application filed by Wabco Westinghouse Fahrzeugbremsen GmbH filed Critical Wabco Westinghouse Fahrzeugbremsen GmbH
Priority to AT83105603T priority Critical patent/ATE21730T1/en
Publication of EP0109480A1 publication Critical patent/EP0109480A1/en
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Publication of EP0109480B1 publication Critical patent/EP0109480B1/en
Expired 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/022—Stopping, starting, unloading or idling control by means of pressure
    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/04—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B27/0404—Details, component parts specially adapted for such pumps
    • F04B27/0437—Disconnecting the pistons from the actuated cam
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • F04B49/121—Lost-motion device in the driving mechanism
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings

Definitions

  • the invention relates to a device for interrupting the delivery of a reciprocating compressor according to the preamble of claim 1.
  • the invention is therefore based on the object of creating a device of the type mentioned, in which a compact design is achieved with simple means.
  • the invention has the advantage that in a reciprocating piston compressor for the device according to the invention no significant additional space is claimed, since the auxiliary piston is arranged in an already existing space.
  • the drawing shows a reciprocating compressor for generating compressed air.
  • the reciprocating compressor essentially consists of a cylinder tube 6, a compressor piston 8, which is sealed in this cylinder tube 6, and a cylinder head with a valve device.
  • the cylinder head in turn consists of a cylinder head cover 14 and a valve support plate 9 arranged between the cylinder head cover 14 and the cylinder tube 6 with a suction valve 18 and a pressure valve 13.
  • the reciprocating compressor described is attached to a motor housing 23 of an internal combustion engine, not shown.
  • the compressor piston 8 On the side facing away from the compression chamber 15, the compressor piston 8 is provided with a piston rod serving as an actuating plunger 22.
  • the actuating plunger 22 in turn serves to drive the compressor piston 8.
  • the compression chamber 15 is connected to the atmosphere via the suction valve 18, a bore 16 in the valve support plate 9 and an inlet bore 17 of the cylinder head cover 14. If necessary, the inlet bore 17 can be preceded by an air cleaning filter (not shown).
  • the compression chamber 15 is also connected via a bore 12 of the valve support plate 9, the pressure valve 13 and an outlet bore 11 of the cylinder head cover 14 to a compressed air circuit, which is symbolically represented by a compressed air reservoir 10.
  • a drive device which, for. B. from an internal combustion engine driven camshaft 27 with a cam 1.
  • a compression spring 2 serving as a restoring force is provided, which is arranged between the cylinder tube 6 and a spring plate 25 fastened to the actuating plunger 22 by means of a locking ring 26.
  • the actuating plunger 22 is pressed against the cam 1, so that the compressor piston 8 exerts an oscillating movement when the camshaft 27 rotates.
  • the chamber lying on the side of the compressor piston 8 facing away from the compression chamber 15 is connected to the atmosphere via a bore 24, so that this chamber can be vented and vented without any problems when the compressor piston 8 moves.
  • auxiliary piston 4 which surrounds the actuating plunger 22 and is annular and surrounds the actuating plunger 22.
  • a guide tube 5 which is attached to the cylinder housing and serves to guide the actuating plunger 22.
  • a control chamber 21 delimited by the auxiliary piston 4, which can be acted upon by a control pressure medium via a control input 3.
  • a control pressure medium in the present case this is compressed air
  • the auxiliary piston 4 moves upward towards the compressor piston 8.
  • a sleeve-shaped stop 20 attached to the auxiliary piston 4 and surrounding the actuating plunger 22 and the guide tube 5 then lies against the compressor piston 8 and moves it upward against the force of the compression spring 2 in the compression direction until the compressor piston 8 reaches the dead center corresponding to the compression process, ie top dead center.
  • the effective area of the auxiliary piston 4 acted upon by the control pressure medium and the pressure of the control pressure medium are dimensioned such that the compressor piston 8 is held securely by the auxiliary piston 4 in its top dead center as long as the control chamber 21 is acted on by the control pressure medium .
  • the compressor piston 8 is also not moved during this time, in which the compressed air supply is interrupted, i. H. there is no wear due to a piston movement.
  • the camshaft 27 is relieved of the forces acting on it when conveying compressed air.
  • the stop 20 is designed to be correspondingly short or a stop 7 is provided on the compressor piston 8 or on the actuating plunger 22 which is connected to the guide tube 5 or a corresponding other counter-stop of the cylinder housing comes to rest before the compressor piston 8 strikes the auxiliary piston 4.
  • a pressure regulator device to regulate the pressure prevailing in the reservoir 10, a pressure regulator device, not shown, with a pressure regulator is provided.
  • the changeover signal of the pressure regulator when the prescribed pressure in the reservoir 10 is reached is used to control the control pressure medium for the auxiliary piston 4.
  • the reciprocating compressor is automatically in his after reaching the desired pressure in the reservoir 10 by stopping the compressor piston 8 top dead center switched off. If the pressure mentioned in the reservoir 10 drops, the control chamber 21 is vented by switching the pressure regulator mentioned, so that compressed air is then replenished.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

A reciprocating piston compressor which is driven by a rotating camshaft and cam. An auxiliary piston is located below the compression piston. The auxiliary piston is movable by a regulated control pressure against the compression piston so that the compression piston is stopped at its top dead center position. Thus, the reciprocating piston compressor is disabled since the compression piston is no longer driven by the rotating camshaft and cam.

Description

Die Erfindung bezieht sich auf eine Einrichtung zum Unterbrechen der Förderung eines Hubkolben-Verdichters gemäss dem Oberbegriff des Patentanspruchs 1.The invention relates to a device for interrupting the delivery of a reciprocating compressor according to the preamble of claim 1.

Das Konstruktionsprinzip einer derartigen Einrichtung ist aus der DE-A,12838918 bekannt, in der ein hydraulisches Druckbeschaffungssystem beschrieben ist. Diese bekannte Einrichtung dient dazu, einen Stillstand des Förderkolbens und damit eine Unterbrechung der Förderung zu ermöglichen, wenn der mittels des Förderkolbens in einem Druckspeicher erreichte Druck einen vorgegebenen Wert überschreitet. Da der Hilfskolben bei der bekannten Einrichtung sinngemäss neben dem Förderkolben angeordnet ist und über einen Mitnehmer von der Seite her auf den Förderkolben einwirkt, ergibt sich ein vergleichsweise grosser Raumbedarf für diese Konstruktion.The construction principle of such a device is known from DE-A, 12838918, in which a hydraulic pressure generation system is described. This known device serves to allow the delivery piston to come to a standstill and thus to interrupt the delivery if the pressure reached by means of the delivery piston in a pressure accumulator exceeds a predetermined value. Since the auxiliary piston in the known device is arranged analogously next to the delivery piston and acts on the delivery piston from the side via a driver, this results in a comparatively large space requirement for this construction.

Der Erfindung liegt deshalb die Aufgabe zugrunde, eine Einrichtung der eingangs genannten Art zu schaffen, bei der mit einfachen Mitteln eine kompakte Bauweise erreicht wird.The invention is therefore based on the object of creating a device of the type mentioned, in which a compact design is achieved with simple means.

Diese Aufgabe wird durch die im Patentanspruch 1 angegebene Erfindung gelöst. Weiterbildungen und vorteilhafte Ausführungsformen der Erfindung sind in den Unteransprüchen angegeben.This object is achieved by the invention specified in claim 1. Further developments and advantageous embodiments of the invention are specified in the subclaims.

Die Erfindung weist den Vorteil auf, dass bei einem Hubkolben-Verdichter für die erfindungsgemässe Einrichtung kein nennenswerter zusätzlicher Raum beansprucht wird, da der Hilfskolben in einem ohnehin vorhandenen Raum angeordnet ist.The invention has the advantage that in a reciprocating piston compressor for the device according to the invention no significant additional space is claimed, since the auxiliary piston is arranged in an already existing space.

Die Erfindung wird anhand eines Ausführungsbeispiels, das in der Zeichnung dargestellt ist, näher erläutert.The invention is explained in more detail using an exemplary embodiment which is illustrated in the drawing.

Die Zeichnung zeigt einen Hubkolben-Verdichter zur Erzeugung von Druckluft. Der Hubkolben-Verdichter besteht im wesentlichen aus einem Zylinderrohr 6, einem in diesem Zylinderrohr 6 abgedichtet geführten Verdichter-Kolben 8 sowie einem Zylinderkopf mit einer Ventileinrichtung. Der Zylinderkopf besteht seinerseits aus einem Zylinderkopfdeckel 14 und einer zwischen dem Zylinderkopfdeckel 14 und dem Zylinderrohr 6 angeordneten Ventilträgerplatte 9 mit einem Saugventil 18 und einem Druckventil 13. Der beschriebene Hubkolben-Verdichter ist an einem Motorgehäuse 23 einer nicht dargestellten Brennkraftmaschine befestigt.The drawing shows a reciprocating compressor for generating compressed air. The reciprocating compressor essentially consists of a cylinder tube 6, a compressor piston 8, which is sealed in this cylinder tube 6, and a cylinder head with a valve device. The cylinder head in turn consists of a cylinder head cover 14 and a valve support plate 9 arranged between the cylinder head cover 14 and the cylinder tube 6 with a suction valve 18 and a pressure valve 13. The reciprocating compressor described is attached to a motor housing 23 of an internal combustion engine, not shown.

Der in einer Bohrung 19 des Zylinderrohrs 6 geführte Verdichter-Kolben 8 begrenzt einen Verdichtungsraum 15. Auf der dem Verdichtungsraum 15 abgewandten Seite ist der Verdichter- Kolben 8 mit einer als Betätigungsstössel 22 dienenden Kolbenstange versehen. Der Betätigungsstössel 22 seinerseits dient zum Antrieb des Verdichter-Kolbens 8.The compressor piston 8 guided in a bore 19 of the cylinder tube 6 delimits a compression chamber 15. On the side facing away from the compression chamber 15, the compressor piston 8 is provided with a piston rod serving as an actuating plunger 22. The actuating plunger 22 in turn serves to drive the compressor piston 8.

Der Verdichtungsraum 15 ist über das Saugventil 18, eine Bohrung 16 in der Ventilträgerplatte 9 und eine Einlassbohrung 17 des Zylinderkopfdekkels 14 an die Atmosphäre angeschlossen. Bei Bedarf kann der Einlassbohrung 17 ein nicht dargestellter Luftreinigungs-Filter vorgeschaltet werden. Der Verdichtungsraum 15 ist ferner über eine Bohrung 12 der Ventilträgerplatte 9, das Druckventil 13 und eine Auslassbohrung 11 des Zylinderkopfdeckels 14 mit einem Druckluftkreis verbunden, der symbolisch durch einen DruckluftVorratsbehälter 10 dargestellt ist.The compression chamber 15 is connected to the atmosphere via the suction valve 18, a bore 16 in the valve support plate 9 and an inlet bore 17 of the cylinder head cover 14. If necessary, the inlet bore 17 can be preceded by an air cleaning filter (not shown). The compression chamber 15 is also connected via a bore 12 of the valve support plate 9, the pressure valve 13 and an outlet bore 11 of the cylinder head cover 14 to a compressed air circuit, which is symbolically represented by a compressed air reservoir 10.

Bei einer Bewegung des Verdichter-Kolbens 8 nach unten, d. h. in Ansaug-,Richtung, wird über die Einlassbohrung 17 und das dann geöffnete Saugventil 18 Luft in den Verdichtungsraum 15 gesaugt. Bei einer anschliessenden Bewegung des Verdichter-Kolbens 8 nach oben, d. h. in Verdichtungs-Richtung, wird das Saugventil 18 automatisch geschlossen. Die dann komprimierte Druckluft gelangt über das sich unter dem Druck der Druckluft automatisch öffnende Druckventil 13 und die Auslassbohrung 11 in den Vorratsbehälter 10.When the compressor piston 8 moves downwards, i. H. in the suction direction, air is sucked into the compression chamber 15 via the inlet bore 17 and the suction valve 18 then opened. With a subsequent movement of the compressor piston 8 upwards, i. H. in the compression direction, the suction valve 18 is automatically closed. The compressed air, which is then compressed, reaches the storage container 10 via the pressure valve 13, which opens automatically under the pressure of the compressed air, and the outlet bore 11.

Zur Erzeugung der erwähnten Bewegungen des Verdichter-Kolbens 8 in Verdichtungs-Richtung ist eine Antriebseinrichtung vorgesehen, die eine z. B. von einer Brennkraftmaschine angetriebene Nockenwelle 27 mit einer Nocke 1 umfasst. Zur Erzeugung der Bewegung des Verdichter-Kolbens 8 in Ansaug-Richtung ist eine als Rückstellkraft dienende Druckfeder 2 vorgesehen, die zwischen dem Zylinderrohr 6 und einem am Betätigungsstössel 22 mittels eines Sicherungsringes 26 befestigten Federteller 25 angeordnet ist. Unter der Kraft der Druckfeder 2 wird der Betätigungsstössel 22 gegen die Nocke 1 gedrückt, so dass der Verdichter-Kolben 8 bei einer Drehbewegung der Nockenwelle 27 eine oszillierende Bewegung ausübt. Die auf der dem Verdichtungsraum 15 abgewandten Seite des Verdichter-Kolbens 8 liegende Kammer ist über eine Bohrung 24 mit der Atmosphäre verbunden, so dass diese Kammer problemlos ent- und belüftet werden kann, wenn sich der Verdichter-Kolben 8 bewegt.To generate the aforementioned movements of the compressor piston 8 in the compression direction, a drive device is provided which, for. B. from an internal combustion engine driven camshaft 27 with a cam 1. To generate the movement of the compressor piston 8 in the suction direction, a compression spring 2 serving as a restoring force is provided, which is arranged between the cylinder tube 6 and a spring plate 25 fastened to the actuating plunger 22 by means of a locking ring 26. Under the force of the compression spring 2, the actuating plunger 22 is pressed against the cam 1, so that the compressor piston 8 exerts an oscillating movement when the camshaft 27 rotates. The chamber lying on the side of the compressor piston 8 facing away from the compression chamber 15 is connected to the atmosphere via a bore 24, so that this chamber can be vented and vented without any problems when the compressor piston 8 moves.

In der Bohrung 19 des Zylinderrohres 6 auf der dem Verdichtungsraum 15 abgewandten Seite des Verdichter-Kolbens 8 ist ein den Betätigungsstössel 22 umgebender, abgedichtet geführter Hilfskolben 4 vorgesehen, der ringförmig ausgebildet ist und den Betätigungsstössel 22 umgibt. Zwischen dem Hilfskolben 4 und dem Betätigungsstössel 22 befindet sich ein Führungsrohr 5, das am Zylindergehäuse befestigt ist und zur Führung des Betätigungsstössels 22 dient. Unterhalb des Hilfskolbens 4 befindet sich eine vom Hilfskolben 4 begrenzte Steuerkammer 21, die über einen Steuereingang 3 mit einem Steuer-Druckmittel beaufschlagt werden kann.Provided in the bore 19 of the cylinder tube 6 on the side of the compressor piston 8 facing away from the compression chamber 15 is a sealingly guided auxiliary piston 4 which surrounds the actuating plunger 22 and is annular and surrounds the actuating plunger 22. Between the auxiliary piston 4 and the actuating plunger 22 there is a guide tube 5 which is attached to the cylinder housing and serves to guide the actuating plunger 22. Below the auxiliary piston 4 is a control chamber 21 delimited by the auxiliary piston 4, which can be acted upon by a control pressure medium via a control input 3.

Wenn die Steuerkammer 21 mit einem Steuer-Druckmittel, im vorliegenden Fall ist dies Druckluft, beaufschlagt wird, bewegt sich der Hilfskolben 4 nach oben auf den verdichter-Kolben 8 zu. Dabei legt sich dann ein am Hilfskolben 4 befestigter, den Betätigungsstössel 22 und das Führungsrohr 5 umgebender hülsenförmiger Anschlag 20 an den Verdichter-Kolben 8 an und bewegt diesen gegen die Kraft der Druckfeder 2 nach oben in Verdichtungs-Richtung, bis der Verdichter-Kolben 8 den dem Verdichtungs-Vorgang entsprechenden Totpunkt, d. h. den oberen Totpunkt, erreicht.When a control pressure medium, in the present case this is compressed air, is applied to the control chamber 21, the auxiliary piston 4 moves upward towards the compressor piston 8. A sleeve-shaped stop 20 attached to the auxiliary piston 4 and surrounding the actuating plunger 22 and the guide tube 5 then lies against the compressor piston 8 and moves it upward against the force of the compression spring 2 in the compression direction until the compressor piston 8 reaches the dead center corresponding to the compression process, ie top dead center.

Die vom Steuer-Druckmittel beaufschlagte Wirkfläche des Hilfskolbens 4 sowie der Druck des Steuer-Druckmittels sind so bemessen, dass der Verdichter-Kolben 8 vom Hilfskolben 4 sicher solange in seinem oberen Totpunkt festgehalten wird, wie die Steuerkammer 21 mit dem Steuer-Druckmittel beaufschlagt ist. Dies bedeutet, dass der Hubkolben-Verdichter während dieser Zeit abgeschaltet ist und keine Druckluft mehr fördern kann. Es wird während dieser Zeit, in der die Druckluft-Förderung unterbrochen ist, auch nicht der Verdichter-Kolben 8 bewegt, d. h. es tritt kein Verschleiss durch eine Kolben-Bewegung auf. Zusätzlich ist die Nockenwelle 27 von den bei Druckluft-Förderung auf sie einwirkenden Kräften entlastet.The effective area of the auxiliary piston 4 acted upon by the control pressure medium and the pressure of the control pressure medium are dimensioned such that the compressor piston 8 is held securely by the auxiliary piston 4 in its top dead center as long as the control chamber 21 is acted on by the control pressure medium . This means that the reciprocating compressor is switched off during this time and can no longer deliver compressed air. The compressor piston 8 is also not moved during this time, in which the compressed air supply is interrupted, i. H. there is no wear due to a piston movement. In addition, the camshaft 27 is relieved of the forces acting on it when conveying compressed air.

Nach dem Entlüften der Steuerkammer 21 wird der Verdichter-Kolben 8 und damit der Hilfskolben 4 durch die Kraft der Druckfeder 2 wieder nach unten bewegt. Damit wird dann der Verdichter- Kolben 8 wieder von der Nockenwelle 27 zwecks Förderung von Druckluft angetrieben.After the control chamber 21 has been vented, the compressor piston 8 and thus the auxiliary piston 4 are moved down again by the force of the compression spring 2. The compressor piston 8 is then driven again by the camshaft 27 for the purpose of conveying compressed air.

Um zu verhindern, dass der Verdichter-Kolben 8 in seinem unteren Totpunkt an dem Hilfskolben 4 anschlägt, ist der Anschlag 20 entsprechend kurz ausgebildet oder es ist ein Anschlag 7 am Verdichter-Kolben 8 oder am Betätigungsstössel 22 vorgesehen, der an dem Führungsrohr 5 oder einem entsprechenden anderen Gegen-Anschlag des Zylindergehäuses zur Anlage kommt, bevor der Verdichter-Kolben 8 an dem Hilfskolben 4 anschlägt.In order to prevent the compressor piston 8 from striking the auxiliary piston 4 at its bottom dead center, the stop 20 is designed to be correspondingly short or a stop 7 is provided on the compressor piston 8 or on the actuating plunger 22 which is connected to the guide tube 5 or a corresponding other counter-stop of the cylinder housing comes to rest before the compressor piston 8 strikes the auxiliary piston 4.

Zur Regelung des in dem Vorratsbehälter 10 herrschenden Druckes ist eine nicht dargestellte Druckreglereinrichtung mit einem Druckregler vorgesehen. Das Umschaltsignal des Druckreglers bei Erreichen des vorgeschriebenen Druckes im Vorratsbehälter 10 dient zur Steuerung des Steuer-Druckmittels für den Hilfskolben 4. Auf diese Weise wird der Hubkolben-Verdichter nach Erreichen des gewünschten Druckes im Vorratsbehälter 10 automatisch durch Stillsetzen des Verdichter-Kolbens 8 in seinem oberen Totpunkt ausgeschaltet. Wenn der erwähnte Druck im Vorratsbehälter 10 sinkt, wird die Steuerkammer 21 durch das Umschalten des erwähnten Druckreglers entlüftet, so dass dann wieder Druckluft nachgespeist wird.To regulate the pressure prevailing in the reservoir 10, a pressure regulator device, not shown, with a pressure regulator is provided. The changeover signal of the pressure regulator when the prescribed pressure in the reservoir 10 is reached is used to control the control pressure medium for the auxiliary piston 4. In this way, the reciprocating compressor is automatically in his after reaching the desired pressure in the reservoir 10 by stopping the compressor piston 8 top dead center switched off. If the pressure mentioned in the reservoir 10 drops, the control chamber 21 is vented by switching the pressure regulator mentioned, so that compressed air is then replenished.

Claims (3)

1. Arrangement for interrupting the delivery of a reciprocating piston compressor having the following features:
a) an actuating rod (22) is provided for driving the compressor piston (8) which is guided in a cylinder (6);
b) a drive device (1, 27) that acts on the actuating rod (22) is provided for driving the compressor piston (8) in the compression direction;
c) a resilient restoring force (2) is provided for moving the compressor piston (8) in the suction direction;
d) there is provided an auxiliary piston (4) that acts on the compressor piston (8) and/or the actuating rod (22) and is responsive to a control pressure medium, which auxiliary piston (4) serves to stop the compressor piston (8) in the region of the botton dead centre corresponding to the compression process;
characterised by the following features:
e) the auxiliary piston (4) is arranged in the cylinder that accommodates the compressor piston (8);
f) the auxiliary piston (4) is in the form on an annular piston that surrounds the actuating rod (22).
2. Arrangement according to claim 1, characterised in that the auxiliary piston (4) has a tubular stop (20) for the compressor piston (8), which stop surrounds the actuating rod (22).
3. Arrangement according to claim 1 or 2, characterised in that a guide tube (5) for the actuating rod (22) is provided between the auxiliary piston (4) and the actuating rod (22).
EP83105603A 1982-11-23 1983-06-08 Arrangement for interrupting the delivery of a piston compressor Expired EP0109480B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83105603T ATE21730T1 (en) 1982-11-23 1983-06-08 DEVICE FOR INTERRUPTING THE DELIVERY OF A RECIPROCATING COMPRESSOR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823243165 DE3243165A1 (en) 1982-11-23 1982-11-23 DEVICE FOR INTERRUPTING A PISTON COMPRESSOR
DE3243165 1982-11-23

Publications (2)

Publication Number Publication Date
EP0109480A1 EP0109480A1 (en) 1984-05-30
EP0109480B1 true EP0109480B1 (en) 1986-08-27

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EP83105603A Expired EP0109480B1 (en) 1982-11-23 1983-06-08 Arrangement for interrupting the delivery of a piston compressor

Country Status (5)

Country Link
US (1) US4515530A (en)
EP (1) EP0109480B1 (en)
JP (1) JPS5996489A (en)
AT (1) ATE21730T1 (en)
DE (2) DE3243165A1 (en)

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Publication number Publication date
EP0109480A1 (en) 1984-05-30
ATE21730T1 (en) 1986-09-15
DE3243165A1 (en) 1984-05-24
JPH037027B2 (en) 1991-01-31
JPS5996489A (en) 1984-06-02
DE3365629D1 (en) 1986-10-02
US4515530A (en) 1985-05-07

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