EP0067949A2 - Valve block for controlling the oil supply of a screw compressor - Google Patents

Valve block for controlling the oil supply of a screw compressor Download PDF

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Publication number
EP0067949A2
EP0067949A2 EP82103912A EP82103912A EP0067949A2 EP 0067949 A2 EP0067949 A2 EP 0067949A2 EP 82103912 A EP82103912 A EP 82103912A EP 82103912 A EP82103912 A EP 82103912A EP 0067949 A2 EP0067949 A2 EP 0067949A2
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EP
European Patent Office
Prior art keywords
oil
channel
valve
bore
valve block
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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.)
Granted
Application number
EP82103912A
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German (de)
French (fr)
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EP0067949B1 (en
EP0067949A3 (en
Inventor
Kess Dipl.-Ing. Helmar
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BAUER SCHRAUBENVERDICHTER GmbH
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BAUER SCHRAUBENVERDICHTER GmbH
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Priority to AT82103912T priority Critical patent/ATE8693T1/en
Publication of EP0067949A2 publication Critical patent/EP0067949A2/en
Publication of EP0067949A3 publication Critical patent/EP0067949A3/en
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Publication of EP0067949B1 publication Critical patent/EP0067949B1/en
Expired legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/021—Control systems for the circulation of the lubricant

Definitions

  • the invention relates to a valve block for controlling the oil supply of a screw compressor according to the preamble of claim 1.
  • Valve blocks of this type are used in order to be able to use the most compact design possible with screw compressors.
  • the object of the invention is to provide a further improvement of the valve blocks mentioned with the aim of combining a large number of functions in the valve block with the smallest possible dimensions. This object is achieved by the means specified in the characterizing part of patent claim 1.
  • the advantage achieved by the invention lies in the spatial combination of the following functions: gate valve as an oil stop valve, thermostatic deflection of the oil flow, pre-cleaning using a strainer, filtering using an oil filter and differential pressure monitoring on the oil filter.
  • an inlet bore 2, an outlet bore 3 and a control air bore 4 are provided on the side representing the connecting flange 1.
  • the channel for the oil duct runs from the inlet bore 2 to a dirt trap 5.
  • the thermostatically actuable slide 6 - which shows the position in hot oil - a division of the channel for the oil guide.
  • the path marked by simple arrows leads to an external connection 9, which is used for connecting a line leading to an oil cooler (not shown).
  • This port 9 is assigned a second outer port 10 for the re-entry of the oil into the valve block.
  • This bore 12 is connected on the one hand via a measuring channel 14 to the input side (bore 26) of the oil filter 8 and on the other hand through a further measuring channel 15 to the output side (bore 28) of the oil filter 8.
  • Another small channel 16 is connected directly to the outlet bore 3 and is used to connect an oil pressure indicator.
  • the connecting flange 1 is shown in FIG. 6 with the inlet bore 2 and in FIG. 5 with the outlet bore 3, which is also the valve bore 17 for the Gate valve 11 is provided. Furthermore, the valve bore 18 for the thermostatically actuable slide 6 can be clearly seen in these figures. Seen spatially, the control air bore 4 is located under the valve bore 17 for the control valve to be acted upon by the gate valve 11. This control air bore 4 opens exactly like the inlet bore 2 and the outlet bore 3 in the connecting flange 1, and these bores communicate with corresponding bores in the housing of the associated screw compressor, which is not shown in detail, however.
  • the inlet bore 2 passes into the dirt trap 5, which is accessible from the outside by means of a screw plug 19.
  • the dirt trap 5 is connected via the passage 20 to the valve bore 18 for the thermostatically operable slide 6, which is designed as a hollow slide.
  • the thermostatically operable slide 6 In the position shown, which shows the thermostatic slide 6 with cold oil, there is a direct connection to the annular channel 22 or to the bore 23 of the gate valve 11 by means of the opening 21, so that the oil supplied via the inlet bore 2 after passing through the Dirt trap 5 and the thermostatic slide 6 and the gate valve 11 directly to the outlet bore 3 and thus to the injection point of the compressor.
  • thermostatic slide 6 has already been mentioned. For further function, it is pointed out that in the absence of control air (bore 4 is depressurized) the oil pressure still present causes the slide valve 11 to be moved downward (FIG. 5), as a result of which the oil leakage from the bore 3 is prevented, regardless of the particular one Position of the thermostatic slide 6.
  • valve bore 17 of the gate valve 11 is also closed by a screw plug 30.
  • valve bore 18 of the thermostatic slide is closed by means of a plug 31, an O-ring seal and a locking ring 32.
  • connection bore 12 for the connection of the differential pressure measuring device.
  • This connection bore 12 is connected on the one hand via the measuring channel 14 to the input side of the oil filter 8 and on the other hand through the further measuring channel 15 to the output side of the oil filter.
  • the measuring channel 15 runs into the ring channel 29, which in turn is connected to the bore 28 coming from the oil filter.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)
  • Detection And Correction Of Errors (AREA)

Abstract

1. Valve block, which is flangeable to the housing of a screw compressor, for the control of the oil supply with a respective bore disposed in the connecting flange (1) for the oil entry (2) and for the oil exit (3), which bores communicate with corresponding bores in the housing of the screw compressor, with a channel for the oil conduction and extending between the bore for the oil entry (2) and the bore for the oil exit (3), with a shut-off slide valve (11), which is arranged in the path of the channel in a valve bore of the valve block and which is loadable by control air through at least one further channel (4), which extends in the valve block and likewise opens in the connecting flange (1), and with a further flange (7), which possesses a respective outlet and inlet opening interrupting the channel for the oil conduction and onto which an oil filter (8) is placeable, characterised by the combination of the following features : the channel for the oil conduction extends by way of a dirt collector (5) arranged in the valve block, a thermostatically actuable three-way slide valve (6), which according to temperature conducts the channel further either by way of the one path (=>) or the other path (->), is arranged in the course of the channel in a further valve bore (18), the one path (=>) leads directly to the shut-off slide valve (11) and, in the case of the open setting of the same, to the bore (3) for the oil exit, the other path (->) leads to an outer connection (9), with which a further outer connection (10) for the re-entry is associated, wherein an oil cooler is connectable between both these connections, a connecting bore (12) for a differential pressure measuring device (13) is disposed in the valve block and connected through a first measuring channel (14) with the channel leading to the outlet opening (26) for the oil filter (8) and through a second measuring channel (15) with the channel leading to the inlet opening (28) from the oil filter (8).

Description

Die Erfindung betrifft einen Ventilblock für das Steuern der Ölzufuhr eines Schraubenverdichters gemäß Oberbegriff des Patentanspruches 1. Derartige Ventilblöcke werden verwendet, um eine möglichst kompakte Bauweise bei Schraubenverdichtern anwenden zu können.The invention relates to a valve block for controlling the oil supply of a screw compressor according to the preamble of claim 1. Valve blocks of this type are used in order to be able to use the most compact design possible with screw compressors.

Aufgabe der Erfindung ist es, eine weitere Verbesserung der genannten Ventilblöcke anzugeben mit dem Ziel, bei kleinstmöglichen Abmessungen eine Vielzahl von Funktionen im Ventilblock zu vereinen. Diese Aufgabe wird erfindungsgemäß durch die im Kennzeichen des Patentanspruches 1 angegebenen Mittel gelöst.The object of the invention is to provide a further improvement of the valve blocks mentioned with the aim of combining a large number of functions in the valve block with the smallest possible dimensions. This object is achieved by the means specified in the characterizing part of patent claim 1.

Der mit der Erfindung erzielte Vorteil liegt in der räumlichen Zusammenfassung der folgenden Funktionen: Absperrschieber als Ölstoppventil, thermostatische Umlenkung des Ölflusses, Vorreinigung mittels Schmutzfänger, Filterung mittels Ölfilter und Differenzdruck- überwachung am Ölfilter. Durch das räumliche Zusammenfassen der genannten Funktionen in einem Ventilblock wird die Kompaktbauweise weitergeführt, und es wird das aufwendige Verlegen von Rohrleitungen auf ein Minimum beschränkt. Die Integration eines Schmutzfängers im Ventilblock trägt insbesondere dem Umstand Rechnung, daß beim Anlauf des Verdichters, also bei kaltem Öl, letzteres nicht über den am Ventilblock angeflanschten Filter läuft, und daß somit die Ölversorgung des Verdichters auch bei geringem Abscheidedruck gewährleistet ist. Hierbei liegt ein weiterer Vorteil in der Raumausnutzung, wenn die Anschlüsse für die zum Ölfilter führenden Leitungen zusammen mit dem Differenzdruckmeßgerät auf einer Seite des im wesentlichen quaderförmig ausgebildeten Ventilblocks angeordnet werden und wenn Absperrschieber und Thermoschieber achsparallel im Ventilblock angeordnet werden.The advantage achieved by the invention lies in the spatial combination of the following functions: gate valve as an oil stop valve, thermostatic deflection of the oil flow, pre-cleaning using a strainer, filtering using an oil filter and differential pressure monitoring on the oil filter. By the spatial combination of the functions mentioned in a valve block the compact design is continued and the time-consuming laying of pipelines is kept to a minimum. The integration of a dirt trap in the valve block takes into account in particular the fact that when the compressor starts up, that is to say when the oil is cold, the latter does not run over the filter flanged to the valve block, and thus the oil supply to the compressor is ensured even at low separation pressure. Here, there is a further advantage in space utilization if the connections for the lines leading to the oil filter are arranged together with the differential pressure measuring device on one side of the essentially block-shaped valve block and if gate valves and thermal slide valves are arranged axially parallel in the valve block.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.

  • Figur 1 zeigt zunächst ein Prinzipschema des Ventilblocks und der darin untergebrachten Funktionen mit Angabe des Ölverlaufs im kalten und im warmen Zustand,
  • Figur 2 bis 4 zeigen drei verschiedene Querschnitte und
  • Figur 5 und 6 zwei verschiedene Längsschnitte einer speziellen Ausführungsform.
An embodiment of the invention is shown in the drawing and will be described in more detail below.
  • FIG. 1 shows a basic diagram of the valve block and the functions accommodated therein, with the oil flow in the cold and in the warm state,
  • Figures 2 to 4 show three different cross sections and
  • Figures 5 and 6 two different longitudinal sections of a special embodiment.

Wie zunächst aus Figur 1 hervorgeht, sind auf der den Anschlußflansch 1 darstellenden Seite eine Einlaßbohrung 2, eine Auslaßbohrung 3 sowie eine Steuerluftbohrung 4 vorhanden. Von der Einlaßbohrung 2 verläuft der Kanal für die Ölführung zu einem Schmutzfänger 5. Danach erfolgt mittels des thermostatisch betätigbaren Schiebers 6 - der die Stellung bei heißem Öl wiedergibt - eine Aufteilung des Kanals für die Ölführung. Der eine durch einfachePfeile gekennzeichnete Weg führt zu einem äußeren Anschluß 9, der für den Anschluß einer zu einem Ölkühler führenden Leitung ( nicht dargestellt ) dient. Diesem Anschluß 9 ist ein zweiter äußerer Anschluß 10 für den Wiedereintritt des Öls in den Ventilblock zugeordnet. Von diesem Anschluß 10 verläuft der weitere Weg im Ventilblock zu einem weiteren Flansch 7 (Bohrung 26), auf welchem ein Ölfilter 8 sitzt, und nach Durchlaufen des Ölfilters und nach Wiedereintritt in den Ventilblock (Bohrung 28) weiter über den Absperrschieber 11 zur Auslaßbohrung 3. Nimmt hingegen der thermostatisch betätigbare Schieber 6 bei kaltem Öl seine andere Stellung ein, so sperrt er den zuvor beschriebenen durch einfache Pfeile gekennzeichneten Weg und gibt den anderen durch Doppelpfeile gekennzeichneten Weg frei. Dieser führt direkt zum Absperrschieber 11 und über diesen wiederum zur Auslaßbohrung 3. An der die beiden äußeren Anschlüsse 9 und 10 tragenden Seite des Ventilblocks ist desweiteren eine Bohrung 12 für den Anschluß eines Differenzdruckmeßgerätes 13 vorgesehen. Diese Bohrung 12 ist einerseites über einen Meßkanal 14 mit der Eingangsseite (Bohrung 26) des Ölfilters 8 und andererseits durch einen weiteren Meßkanal 15 mit der Ausgangsseite (Bohrung 28) des Ölfilters 8 verbunden. Unmittelbar an der Auslaßbohrung 3 ist noch ein weiterer kleiner Kanal 16 angeschlossen, der dem Anschluß eines Öldruckanzeigers dient.As can first be seen from FIG. 1, an inlet bore 2, an outlet bore 3 and a control air bore 4 are provided on the side representing the connecting flange 1. The channel for the oil duct runs from the inlet bore 2 to a dirt trap 5. Thereafter, the thermostatically actuable slide 6 - which shows the position in hot oil - a division of the channel for the oil guide. The path marked by simple arrows leads to an external connection 9, which is used for connecting a line leading to an oil cooler (not shown). This port 9 is assigned a second outer port 10 for the re-entry of the oil into the valve block. From this connection 10, the further path in the valve block to a further flange 7 (bore 26), on which an oil filter 8 is seated, and after passing through the oil filter and re-entering the valve block (bore 28), continues via the slide valve 11 to the outlet bore 3 If, on the other hand, the thermostatically operable slide 6 assumes its other position when the oil is cold, it blocks the path described above by single arrows and releases the other path indicated by double arrows. This leads directly to the gate valve 11 and, in turn, to the outlet bore 3. On the side of the valve block carrying the two outer connections 9 and 10, a bore 12 is also provided for the connection of a differential pressure measuring device 13. This bore 12 is connected on the one hand via a measuring channel 14 to the input side (bore 26) of the oil filter 8 and on the other hand through a further measuring channel 15 to the output side (bore 28) of the oil filter 8. Another small channel 16 is connected directly to the outlet bore 3 and is used to connect an oil pressure indicator.

Die besondere Kompaktheit und Vielseitigkeit des Ventilblocks wird nachstehend an Hand der Figuren 2 bis 6 näher erläutert: Der Anschlußflansch 1 ist gemäß Figur 6 mit der Einlaßbohrung 2 sowie gemäß Figur 5 mit der Auslaßbohrung 3, die zugleich Ventilbohrung 17 für den Absperrschieber 11 ist, versehen. Desweiteren ist in diesen Figuren die Ventilbohrung 18 für den thermostatisch betätigbaren Schieber 6 gut zu erkennen. Räumlich gese= hen liegt unter der Ventilbohrung 17 die Steuerluftbohrung 4 für die Beaufschlagung des Absperrschiebers 11 mit Steuerdruck. Diese Steuerluftbohrung 4 mündet genau wie die Einlaßbohrung 2 und die Auslaßbohrung 3 im Anschlußflansch 1, und diese Bohrungen kommunizieren mit entsprechenden Bohrungen im Gehäuse des zugehörigen Schraubenverdichters, was im einzelnen jedoch nicht dargestellt ist.The particular compactness and versatility of the valve block is explained in more detail below with reference to FIGS. 2 to 6: The connecting flange 1 is shown in FIG. 6 with the inlet bore 2 and in FIG. 5 with the outlet bore 3, which is also the valve bore 17 for the Gate valve 11 is provided. Furthermore, the valve bore 18 for the thermostatically actuable slide 6 can be clearly seen in these figures. Seen spatially, the control air bore 4 is located under the valve bore 17 for the control valve to be acted upon by the gate valve 11. This control air bore 4 opens exactly like the inlet bore 2 and the outlet bore 3 in the connecting flange 1, and these bores communicate with corresponding bores in the housing of the associated screw compressor, which is not shown in detail, however.

Die Einlaßbohrung 2 geht in den Schmutzfänger 5 über, der mittels einer Verschlußschraube 19 von außen zugänglich ist. Der Schmutzfänger 5 ist über den Durchlaß 20 mit der Ventilbohrung 18 für den thermostatisch betätigbaren Schieber 6, der als Hohlschieber ausgebildet ist, verbunden. In der gezeigten Stellung, die den thermostatischen Schieber 6 bei kaltem Öl zeigt, liegt mittels des Durchbruches 21 eine direkte Verbindung mit dem Ringkanal 22 bzw. mit der Bohrung 23 des Absperrschiebers 11 vor, so daß das über die Einlaßbohrung 2 zugeführte Öl nach Durchlaufen des Schmutzfängers 5 und des thermostatischen Schiebers 6 und des Absperrschiebers 11 unmittelbar zur Auslaßbohrung 3 und so zur Einspritzstelle des Verdichters gelangt.The inlet bore 2 passes into the dirt trap 5, which is accessible from the outside by means of a screw plug 19. The dirt trap 5 is connected via the passage 20 to the valve bore 18 for the thermostatically operable slide 6, which is designed as a hollow slide. In the position shown, which shows the thermostatic slide 6 with cold oil, there is a direct connection to the annular channel 22 or to the bore 23 of the gate valve 11 by means of the opening 21, so that the oil supplied via the inlet bore 2 after passing through the Dirt trap 5 and the thermostatic slide 6 and the gate valve 11 directly to the outlet bore 3 and thus to the injection point of the compressor.

Hat sich nach der Anlaufphase des Verdichters das Öl erhitzt, so wird der thermostatische Schieber 6 nach unten verschoben (Figur 5), so daß der zuvor beschriebene Öldurchgang versperrt wird und so daß mittels des weiteren Durchbruches 24 im Schieber 6 eine Verbindung mit dem äußeren Anschluß 9, der zum Ölkühler führt, auftritt. Dieser Weg ist wie in Figur 1 wiederum durch einfache Pfeile markiert. Nachdem das heiße Öl den nicht dargestellten Ölkühler durchlaufen hat, wird es über den weiteren äußeren Anschluß 10 wieder dem Ventilblock zugeführt. Über diesen Anschluß 10 und die zum weiteren Flansch 7 führende Bohrung 26 wird das Öl in das an diesem Flansch 7 sitzende Ölfilter 8 geleitet. Vom Ölfilter 8 setzt sich der Ölkreislauf über die ebenfalls in den Flansch 7 mündende Bohrung 28 fort. Diese Bohrung 28 geht in einen Ringkanal 29 über, der in der gezeigten Stellung den Durchtritt über den Absperrschieber 11 freigibt (Fig. 2).If the oil has heated up after the start-up phase of the compressor, the thermostatic slide 6 is moved downward (FIG. 5), so that the previously described oil passage is blocked and so that a connection with the external connection is made by means of the further opening 24 in the slide 6 9, which leads to the oil cooler, occurs. As in FIG. 1, this path is again marked by simple arrows. After the hot oil has passed through the oil cooler (not shown), it is fed back to the valve block via the further outer connection 10. The oil is conducted into the oil filter 8 seated on this flange 7 via this connection 10 and the bore 26 leading to the further flange 7. The oil circuit continues from the oil filter 8 via the bore 28, which also opens into the flange 7. This bore 28 merges into an annular channel 29 which, in the position shown, enables passage through the gate valve 11 (FIG. 2).

Die Funktion des thermostatischen Schiebers 6 wurde bereits erwähnt. Zur weiteren Funktion wird darauf hingewiesen, daß bei fehlender Steuerluft (Bohrung 4 ist drucklos) der noch vorhandene Öldruck ein Verschieben des Absperrschiebers 11 nach unten (Figur 5) veranlaßt, wodurch der Ölaustritt aus der Bohrung 3 unterbunden wird, und zwar unabhängig von der jeweiligen Stellung des thermostatischen Schiebers 6.The function of the thermostatic slide 6 has already been mentioned. For further function, it is pointed out that in the absence of control air (bore 4 is depressurized) the oil pressure still present causes the slide valve 11 to be moved downward (FIG. 5), as a result of which the oil leakage from the bore 3 is prevented, regardless of the particular one Position of the thermostatic slide 6.

Wie aus den Figuren weiter ersichtlich, ist die Ventilbohrung 17 des Absperrschiebers 11 ebenfalls durch eine Verschlußschraube 30 verschlossen. Desgleichen ist die Ventilbohrung 18 des thermostatischen Schiebers mittels Stopfen 31, O-Ringdichtung und Sicherungsring 32 verschlossen.As can also be seen from the figures, the valve bore 17 of the gate valve 11 is also closed by a screw plug 30. Likewise, the valve bore 18 of the thermostatic slide is closed by means of a plug 31, an O-ring seal and a locking ring 32.

An der die beiden äußeren Anschlüsse 9 und 10 aufnehmenden Seite 33 des Ventilblocks befindet sich die weitere Anschlußbohrung 12 für den Anschluß des Differenzdruckmeßgerätes. Diese Anschlußbohrung 12 ist einerseits über den Meßkanal 14 mit der Eingangsseite des Ölfilters 8 und andererseits durch den weiteren Meßkanal 15 mit der Ausgangsseite des Ölfilters verbunden. Der Meßkanal 15 läuft in den Ringkanal 29 ein, der seinerseits mit der vom Ölfilter kommenden Bohrung 28 verbunden ist.On the side 33 of the valve block receiving the two outer connections 9 and 10 there is the further connection bore 12 for the connection of the differential pressure measuring device. This connection bore 12 is connected on the one hand via the measuring channel 14 to the input side of the oil filter 8 and on the other hand through the further measuring channel 15 to the output side of the oil filter. The measuring channel 15 runs into the ring channel 29, which in turn is connected to the bore 28 coming from the oil filter.

Claims (3)

1. An das Gehäuse eines Schraubenverdichters anflanschbarer Ventilblock zum Steuern der Ölzufuhr mit je einer im Anschlußflansch befindlichen Bohrung für den Öleintritt und für den Ölaustritt, welche Bohrungen mit entsprechenden Bohrungen im Gehäuse des Schraubenverdichters kommunizieren, mit einem zwischen der Bohrung für den Öleintritt und der Bohrung für den Ölaustritt verlaufenden Kanal für die Ölführung, mit einem in einer Ventilbohrung des Ventilblocks im Weg des Kanals angeordneten Absperrschieber, der über mindestens einen weiteren im Ventilblock verlaufenden Kanal, der ebenfalls im Anschlußflansch mündet, mit Steuerluft beaufschlagbar ist, und mit einem weiteren Flansch, der je eine den Kanal für die Ölführung unterbrechende Auslaß- und Einlaßöffnung besitzt und auf den ein Ölfilter aufsetzbar ist, gekennzeichnet durch die Kombination der folgenden Merkmale: der Kanal für die Ölführung verläuft über einen im Ventilblock angeordneten Schmutzfänger (5), im Zuge des Kanals ist in einer weiteren Ventilbohrung (18) ein thermostatisch betätigbarer Dreiwegschieber (6) angeordnet, der je nach Temperatur den Kanal entweder über den einen (⇒) oder den anderen Weg ( →) weiterführt, der eine Weg (⇒) führt unmittelbar zum Absperrschieber (11) und - bei Offenstellung desselben - zur Bohrung (3) für den Ölaustritt, der andere Weg (→) führt zu einem äußeren Anschluß (9), dem ein weiterer äußerer Anschluß (10) für den Wiedereintritt zugeordnet ist, wobei zwischen diesen beiden Anschlüssen ein Ölkühler anschließbar ist, im Ventilblock befindet sich eine Anschlußbohrung (12) für ein Differenzdruckmeßgerät (13), die über einen ersten Meßkanal (14) mit dem zur Auslaßöffnung (26) für das Ölfilter (8) führenden Kanal und mit einem zweiten Meßkanal (15) mit dem zur Einlaßöffnung (28) für das Ölfilter (8) führenden Kanal verbunden ist. 1. Valve block that can be flanged to the housing of a screw compressor to control the oil supply each with a hole in the connecting flange for the oil inlet and for the oil outlet, which holes communicate with corresponding holes in the housing of the screw compressor, with a channel for the oil guide running between the hole for the oil inlet and the hole for the oil outlet, with a gate valve arranged in a valve bore of the valve block in the path of the channel, which can be acted upon with control air via at least one further channel running in the valve block, which also opens into the connecting flange, and with a further flange, each of which has an outlet and inlet opening interrupting the channel for the oil guidance and onto which an oil filter can be placed, characterized by the combination of the following features: the channel for the oil guide runs over a dirt trap (5) arranged in the valve block, In the course of the channel, a thermostatically operable three-way slide (6) is arranged in a further valve bore (18) which, depending on the temperature, either over the one (⇒) or the continues on another path (→), one path (⇒) leads directly to the gate valve (11) and - if it is open - to the hole (3) for the oil outlet, the other path (→) leads to an outer connection (9), to which a further outer connection (10) is assigned for re-entry, an oil cooler being connectable between these two connections, In the valve block there is a connection bore (12) for a differential pressure measuring device (13) which, via a first measuring channel (14) with the channel leading to the outlet opening (26) for the oil filter (8) and with a second measuring channel (15) with the Inlet opening (28) for the oil filter (8) leading channel is connected. 2. Ventilblock nach Anspruch 1, dadurch gekennzeichnet, daß die beiden äußeren Anschlüsse (9, 10) für den Ölkühler zusammen mit der Anschlußbohrung (12) für das Differenzdruckmeßgerät (13) an einer Seite (33) des im wesentlichen quaderförmigen Ventilblocks angeordnet sind.2. Valve block according to claim 1, characterized in that the two outer connections (9, 10) for the oil cooler are arranged together with the connection bore (12) for the differential pressure measuring device (13) on one side (33) of the substantially cuboid valve block. 3. Ventilblock nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Ventilbohrungen (17, 18) von Absperrschieber (11) und Thermoschieber (6) achsparallel im Ventilblock angeordnet sind.3. Valve block according to claim 1 or 2, characterized in that the valve bores (17, 18) of the gate valve (11) and thermal slide valve (6) are arranged axially parallel in the valve block.
EP82103912A 1981-06-05 1982-05-06 Valve block for controlling the oil supply of a screw compressor Expired EP0067949B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82103912T ATE8693T1 (en) 1981-06-05 1982-05-06 VALVE BLOCK FOR CONTROLLING THE OIL SUPPLY OF A SCREW COMPRESSOR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3122361 1981-06-05
DE19813122361 DE3122361A1 (en) 1981-06-05 1981-06-05 VALVE BLOCK FOR CONTROLLING THE OIL SUPPLY OF A SCREW COMPRESSOR

Publications (3)

Publication Number Publication Date
EP0067949A2 true EP0067949A2 (en) 1982-12-29
EP0067949A3 EP0067949A3 (en) 1983-01-12
EP0067949B1 EP0067949B1 (en) 1984-07-25

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ID=6134004

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82103912A Expired EP0067949B1 (en) 1981-06-05 1982-05-06 Valve block for controlling the oil supply of a screw compressor

Country Status (4)

Country Link
EP (1) EP0067949B1 (en)
AT (1) ATE8693T1 (en)
CA (1) CA1184307A (en)
DE (1) DE3122361A1 (en)

Cited By (4)

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GB2164095A (en) * 1984-09-05 1986-03-12 Hydrovane Compressor Rotary air compressors
CN1083537C (en) * 1996-05-14 2002-04-24 北越工业株式会社 Oil cooling type screw compressor
EP1308625A2 (en) * 2001-10-30 2003-05-07 Kaeser Kompressoren GmbH Compressor cooling control
CN113027766A (en) * 2021-03-10 2021-06-25 重庆奇螺流体设备有限公司 Oil gas cooler of variable-frequency oil injection screw air compressor and system thereof

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DE4234391B4 (en) * 1992-10-08 2004-02-12 Grasso Gmbh Refrigeration Technology screw compressors
DE19800825A1 (en) * 1998-01-02 1999-07-08 Schacht Friedrich Dry compacting screw pump
DE102009019720A1 (en) 2009-05-05 2010-11-25 Spiegel Luft- Und Klimatechnik Gmbh Oil filter station for use in e.g. compression refridgeration machine, has parallel lines working separately as bypasses, and high pressure filters with fineness degree of specific range arranged as oil filters in each bypass
DE102010015152A1 (en) 2010-04-16 2011-10-20 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Control valve for an oil-injected screw compressor
DE102011014961A1 (en) * 2011-03-24 2012-09-27 Rotorcomp Verdichter Gmbh Screw compressor system

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US3250460A (en) * 1964-06-04 1966-05-10 Borg Warner Compressor with liquid refrigerant injection means
FR1574083A (en) * 1967-04-24 1969-07-11
US3482768A (en) * 1968-02-28 1969-12-09 Gardner Denver Co Compressor control system
US3698838A (en) * 1971-02-11 1972-10-17 Ingersoll Rand Co Automatic fluid supply and control means
FR2218491A1 (en) * 1973-02-20 1974-09-13 Bauer Kompressoren
DE2926076A1 (en) * 1979-06-28 1981-02-26 Dienes Werke Oil valve for screw type air compressor - has O=ring on piston in conical seat for tight shut off

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Publication number Priority date Publication date Assignee Title
US3250460A (en) * 1964-06-04 1966-05-10 Borg Warner Compressor with liquid refrigerant injection means
FR1574083A (en) * 1967-04-24 1969-07-11
US3482768A (en) * 1968-02-28 1969-12-09 Gardner Denver Co Compressor control system
US3698838A (en) * 1971-02-11 1972-10-17 Ingersoll Rand Co Automatic fluid supply and control means
FR2218491A1 (en) * 1973-02-20 1974-09-13 Bauer Kompressoren
DE2926076A1 (en) * 1979-06-28 1981-02-26 Dienes Werke Oil valve for screw type air compressor - has O=ring on piston in conical seat for tight shut off

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164095A (en) * 1984-09-05 1986-03-12 Hydrovane Compressor Rotary air compressors
EP0174782A2 (en) * 1984-09-05 1986-03-19 The Hydrovane Compressor Company Limited Rotary air compressors
US4648815A (en) * 1984-09-05 1987-03-10 The Hydrovane Compressor Company Limited Rotary air compressor with thermally responsive oil injection
EP0174782A3 (en) * 1984-09-05 1987-09-02 The Hydrovane Compressor Company Limited Rotary air compressors
CN1083537C (en) * 1996-05-14 2002-04-24 北越工业株式会社 Oil cooling type screw compressor
EP1308625A2 (en) * 2001-10-30 2003-05-07 Kaeser Kompressoren GmbH Compressor cooling control
EP1308625A3 (en) * 2001-10-30 2003-09-03 Kaeser Kompressoren GmbH Compressor cooling control
US6719546B2 (en) 2001-10-30 2004-04-13 Kaeser Kompressoren Gmbh Arrangement for controlling the flow of a coolant fluid in a compressor
CN113027766A (en) * 2021-03-10 2021-06-25 重庆奇螺流体设备有限公司 Oil gas cooler of variable-frequency oil injection screw air compressor and system thereof

Also Published As

Publication number Publication date
EP0067949B1 (en) 1984-07-25
CA1184307A (en) 1985-03-19
DE3122361A1 (en) 1982-12-23
EP0067949A3 (en) 1983-01-12
ATE8693T1 (en) 1984-08-15

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