EP0206153B1 - Compact air compression installation, especially with a screw compressor - Google Patents

Compact air compression installation, especially with a screw compressor Download PDF

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Publication number
EP0206153B1
EP0206153B1 EP86108044A EP86108044A EP0206153B1 EP 0206153 B1 EP0206153 B1 EP 0206153B1 EP 86108044 A EP86108044 A EP 86108044A EP 86108044 A EP86108044 A EP 86108044A EP 0206153 B1 EP0206153 B1 EP 0206153B1
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EP
European Patent Office
Prior art keywords
oil
compressor
housing
filter
separating container
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
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EP86108044A
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German (de)
French (fr)
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EP0206153A1 (en
Inventor
Wolf Zolldann
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Mahle GmbH
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Mahle GmbH
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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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps

Definitions

  • the invention relates to a compact air compressor system with a compressor, in particular with a screw rotor compressor according to the preamble of claim 1.
  • compressor systems are e.g. known from DE-A-29 38 557.
  • the compressor housing is built into the interior of the oil separator tank, i.e. the screw rotor housing is manufactured there together with the oil separator tank as an integrated part.
  • This embodiment has the disadvantage that the same material must be used for the screw rotor housing in which the screw rotors are mounted as for the entire oil separator tank housing. As a result, the material can either not be optimized in accordance with the storage requirements or high-quality and therefore expensive material must be used for all housing parts, which is uneconomical.
  • Another possibility is to use e.g. To integrate screw rotor housings made of different materials into the interior of the oil separator tank or to insert them later. In this case, not only is the manufacture complicated, but it must also be accepted for the screw rotor housing that greatly varying operating conditions, such as e.g. Changes in temperature and pressure, which act on the screw rotor housing and can thus negatively influence the bearing accuracy.
  • the object of the invention is achieved by designing the compressor system according to the features of the characterizing part of patent claim 1.
  • the air compressor system essentially consists of the oil separator tank 1, the screw rotor housing 2 flanged onto it, the drive motor 3 and the belt drive 4 between the drive motor 3 and screw rotors 5 in a screw rotor housing 2.
  • the screw rotor housing 2 is fixed via a flange 6 to a counter flange 7 of the oil separator housing 2.
  • Individual spaces are formed between the flanges 6, 7, specifically a space B through which the compressed compressed air is guided into the oil separating container 1, a space 9 through which the air sucked in by the air filter 10 is guided into the screw rotor housing 2 and a Space 11, from which oil is sprayed onto the screw rotors 5 in the screw rotor housing 2 and is guided to the bearing points of the rotors 5.
  • the space 8 is a kind of buffer space and serves as a silencer at the outlet of the screw rotor housing for the compressed air.
  • the passage from the space 8 into the interior of the oil separating tank 1 is designed as a throttle bore 12.
  • a molded seal 13 is provided between the flanges 6 and 7.
  • the space 9 can also be omitted.
  • the accumulated air is then fed directly to the screw rotor housing 2 in another way.
  • the compressed air enters an annular space 14 through the throttle bore 12 which is delimited radially on the inside by an inserted ring wall 15.
  • a radially flowable ring filter 16 is inserted centrally within the ring wall 15 at a distance. Between the ring filter 16 and the ring wall 15 there is an annular space 14 '.
  • the throttle bore 12 opens into the annular space 14 in such a way that the compressed air opens tangentially there, as a result of which cyclone action separates the oil droplets contained in the compressed air stream.
  • a further pre-oil separation takes place when the compressed air flows around the lower edge of the ring wall 15, the oil droplets being able to sink directly into the oil sump 17 at the bottom of the oil separation container.
  • the ring wall 15 is covered at its upper end by an annular flange 18 which projects radially inwards and outwards beyond the ring wall.
  • the ring wall 15 and the ring flange 18 are e.g. riveted or welded sheet metal parts.
  • the ring wall 15 and the ring flange 18 together form a common insertion part which can be used after lifting off the upper cover 19 of the oil separating container. The storage of this insert part on the ring filter 16 will be discussed in more detail below.
  • the ring filter 16 which can be inserted into the interior of the oil separating container 1 after the cover 19 has been removed, is mounted in a shell 20 on its lower end ring surface.
  • the shell 20 is in turn supported by a spring 21 on the bottom of the oil separating tank 1.
  • Contact surfaces 22 for detecting the ring flange 18 above the ring filter 16 are provided on the cover 19. If the cover 19 is firmly placed on the oil separator housing 1, the ring filter 16 is clearly fixed.
  • the insert part consisting of ring wall 15 and ring flange 18 is clamped between the contact surface 22 and the upper end ring surface of the ring filter 16. The clamping can take place via seal 23.
  • the ring flange 18 is sealed against the wall of the oil separator tank by a radial seal 24.
  • a float 25 is arranged in the bowl 20, which ensures that oil settling in the bowl 20 flows off through a pipe 26 and can be discharged to a location of lower pressure.
  • An oil filter cartridge 27 and a mixing valve 28 as a temperature regulator for the oil circuit are arranged below the screw rotor housing 2 on the outer wall of the oil separator tank in the region of the oil filling. Via line 29, the oil reaches the oil cooler 30 and back again to the mixing valve 28. The filtered oil reaches the oil distribution space 11 in the shortest way via a line 34. The compressed air reaches the aftercooler 32 via line 31. The two coolers become 30 and 32 and the drive motor 3 cooled by a fan 33.
  • the oil filter cartridge 27 can also be arranged as an oil filter cartridge 35 in the interior of the oil separating container 1. In this case it is screwed to the bottom of this container. Its ring-shaped filter insert is flowed through radially from the outside to the inside.
  • the cup-shaped filter housing is provided on its open side covered by a perforated plate with a central outlet, with which it is screwed onto a threaded connector 36 in the bottom of the oil separating container 1 so that the perforated plate openings leading to the raw side of the filter insert are freely located inside the oil separating container.
  • the shell 20 rests on the closed end of the pot-shaped filter cartridge housing.
  • the shell 20 is provided with a ring which encompasses the square profile of the filter cartridge 35.
  • a central hexagon 37 is attached to the inside of the shell, to which a conventional socket wrench can be conveniently attached.
  • a float 25 is provided in the shell 20, which is constructed somewhat differently from that according to FIG. 3, but fulfills the same function.
  • the drain pipe 26 is designed to be flexible in the execution of the shell 20 according to FIG. 5 described here, since the shell 20 must be removed from its position when the oil filter 27 is changed.
  • the attachment of the oil filter 35 in the interior of the oil separating container 1 has the advantage that no high-pressure-resistant cartridge housing has to be used, since there is no pressure difference between the raw filter space and the exterior.
  • the filter 35 can be changed together with the ring filter 16 with the cover 19 removed. In order to have the same change intervals for the two filters, their service lives are expediently coordinated with one another.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Description

Die Erfindung betrifft eine kompakte Luftverdichteranlage mit einem Verdichter, insbesondere mit einem Schraubenrotorenverdichter nach dem Oberbegriff des Patentanspruchs 1. Derartige Verdichteranlagen sind z.B. aus DE-A-29 38 557 bekannt. Das Verdichtergehäuse ist dort im Innenraum des Ölabscheidebehälters eingearbeitet, d.h. das Schraubenrotorengehäuse wird dort zusammen mit dem Ölabscheidebehälter als ein integriertes Teil hergestellt.The invention relates to a compact air compressor system with a compressor, in particular with a screw rotor compressor according to the preamble of claim 1. Such compressor systems are e.g. known from DE-A-29 38 557. The compressor housing is built into the interior of the oil separator tank, i.e. the screw rotor housing is manufactured there together with the oil separator tank as an integrated part.

Diese Ausführung hat den Nachteil, daß für das Schraubenrotorengehäuse, in dem die Schraubenrotoren gelagert sind, dasselbe Material verwendet werden muß wie für das gesamte Ölabscheidebehältergehäuse. Dadurch kann das Material entweder nicht den Lageranforderungen entsprechend optimiert werden oder es muß für sämtliche Gehäuseteile hochwertiges und damit auch teueres Material verwendet werden, was unwirtschaftlich ist.This embodiment has the disadvantage that the same material must be used for the screw rotor housing in which the screw rotors are mounted as for the entire oil separator tank housing. As a result, the material can either not be optimized in accordance with the storage requirements or high-quality and therefore expensive material must be used for all housing parts, which is uneconomical.

Eine andere Möglichkeit besteht darin, ein z.B. Schraubenrotorengehäuse aus unterschiedlichem Material in das Innere des Ölabscheidebehälters hinein zu integrieren bzw. nachträglich einzusetzen. In diesem Fall ist nicht nur die Herstellung kompliziert, sondern es muß für das Schraubenrotorengehäuse auch in Kauf genommen werden, daß im Inneren des Ölabscheidebehälters stark variierende Betriebsbedingungen wie z.B. Temperatur- und Druckveränderungen, auf das Schraubenrotorengehäuse einwirken und dadurch die Lagergenauigkeit negativ beeinflu- ßen können.Another possibility is to use e.g. To integrate screw rotor housings made of different materials into the interior of the oil separator tank or to insert them later. In this case, not only is the manufacture complicated, but it must also be accepted for the screw rotor housing that greatly varying operating conditions, such as e.g. Changes in temperature and pressure, which act on the screw rotor housing and can thus negatively influence the bearing accuracy.

Darüber hinaus ist es beispielsweise aus GB-A-783 339 auch bereits bekannt, das Verdichtergehäuse separat auszuführen und an den Ölabscheidebehälter anzuflanschen. Bei jener bekannten Ausführung sind unter anderem für die Ölversorgung noch getrennt anzuschließende Zuleitungen erforderlich. Dies ist umständlich und unrationell.In addition, it is also known from GB-A-783 339, for example, to design the compressor housing separately and to flange it onto the oil separator tank. In that known embodiment, feed lines which are still to be connected separately are required, inter alia, for the oil supply. This is cumbersome and inefficient.

Bei einer Luftverdichteranlage nach FR-A-25 03 298, bei der das Verdichtergehäuse ebenfalls angeflanscht ist, besteht der gleiche Nachteil.With an air compressor system according to FR-A-25 03 298, in which the compressor housing is also flanged, there is the same disadvantage.

Hier eine Verbesserung in bezug auf einen konstruktiv möglichst einfachen und kompakten Aufbau der Verdichteranlage zu finden, ist Aufgabe der Erfindung. Bei der anzustrebenden Lösung sollen weiterhin unterschiedliche Materialien für das Verdichtergehäuse und die übrigen Teile des Ölabscheidebehälters gewählt werden können. Ferner soll das Verdichtergehäuse ohne jede Rücksichtnahme auf die inneren Raumverhältnisse des Ölabscheidebehälters gestaltbar sein.Finding an improvement here in terms of a construction of the compressor system which is as simple and compact as possible is the object of the invention. In the solution to be sought, different materials for the compressor housing and the remaining parts of the oil separator tank should continue to be able to be selected. Furthermore, the compressor housing should be able to be designed without any consideration of the internal space conditions of the oil separator tank.

Gelöst wird die erfindungsgemäße Aufgabe durch eine Ausführung der Verdichteranlage nach den Merkmalen des kennzeichnenden Teils des Patentanspruchs 1.The object of the invention is achieved by designing the compressor system according to the features of the characterizing part of patent claim 1.

Zweckmäßige Ausgestaltungen sind Gegenstand der Unteransprüche.Appropriate configurations are the subject of the subclaims.

Besondere Vorteile der Erfindung bestehen in folgendem:Particular advantages of the invention are as follows:

Kräfte durch Temperaturdehnung oder inneren Überdruck im Ölabscheidebehälter können weitgehend vom z.B. Schraubenrotorengehäuse fern gehalten werden

  • es können unterschiedliche Materialien für das Verdichtergehäuse und den Ölabscheidebehälter ohne Bedenken eingesetzt werden
  • es wird ein Eingußteil für den Ölabscheidebehälter vermieden (das separate z.B. Schraubenrotorengehäuse hat die selbe Innenform wie das Eingußteil, die Außenkontur kann frei geformt werden)
  • an einem kleinen, handlichen Verdichtergehäuse kann die Bearbeitung genauer und leichter erfolgen als an einem Verdichtergehäuse mit angeformtem Öl- und Abscheideraum
  • es können verschiedene Schraubenrotorengehäuse angeflanscht werden
Forces caused by thermal expansion or internal overpressure in the oil separator tank can largely be kept away from the screw rotor housing, for example
  • Different materials can be used for the compressor housing and the oil separator tank without hesitation
  • a pouring part for the oil separator tank is avoided (the separate screw rotor housing, for example, has the same inner shape as the pouring part, the outer contour can be freely shaped)
  • Processing can be carried out more precisely and easily on a small, handy compressor housing than on a compressor housing with a molded-on oil and separating chamber
  • different screw rotor housings can be flanged

bei einem Lagerschaden mit Beschädigung des Verdichtergehäuses kann letzteres leicht susgewechselt werden, wobei das zu ersetzende Teil relativ klein und billig ist.in the event of bearing damage with damage to the compressor housing, the latter can easily be replaced, the part to be replaced being relatively small and cheap.

Weitere Vorteile ergeben sich aus dem nachfolgend anhand der Zeichnung beschriebenen Ausführungsbeispiel. Es zeigen

  • Fig. 1 eine Ansicht der Luftverdichteranlage
  • Fig. 2 die Ansicht der Flanschdichtung zwischen Schraubenrotorengehäuse und Ölabscheidebehälter
  • Fig. 3 die Verdichteranlage im Schnitt nach. Linie 111-111
  • Fig. 4 einen Schnitt durch die Verdichteranlage nach Linie IV-IV.
  • Fig. 5 die Verdichteranlage im Schnitt nach Linie 111-111 mit einer alternativen Ausgestaltung der Einbauten des Ölabscheidebehälters.
Further advantages result from the exemplary embodiment described below with reference to the drawing. Show it
  • Fig. 1 is a view of the air compressor system
  • Fig. 2 shows the view of the flange seal between the screw rotor housing and oil separator tank
  • Fig. 3 shows the compressor system in section. Line 111-111
  • Fig. 4 shows a section through the compressor system according to line IV-IV.
  • Fig. 5 shows the compressor system in section along line 111-111 with an alternative embodiment of the internals of the oil separator tank.

Die Luftverdichteranlage besteht im wesentlichen aus dem Ölabscheidebehälter 1, dem daran angeflanschten Schraubenrotorengehäuse 2, dem Antriebsmotor 3 sowie dem Riemenantrieb 4 zwischen Antriebsmotor 3 und Schraubenrotoren 5 in einem Schraubenrotorengehäuse 2.The air compressor system essentially consists of the oil separator tank 1, the screw rotor housing 2 flanged onto it, the drive motor 3 and the belt drive 4 between the drive motor 3 and screw rotors 5 in a screw rotor housing 2.

Das Schraubenrotorengehäuse 2 ist über einen Flansch 6 an einem Gegenflansch 7 des Ölabscheidegehäuses 2 efestigt. Zwischen den Flanschen 6, 7 sind einzelne Räume ausgebildet, und zwar ein Raum B, durch den die verdichtete Druckluft in den Ölabscheidebehälter 1 geführt wird, ein Raum 9, durch den die durch das Luftfilter 10 angesaugte Luft in das Schraubenrotorengehäuse 2 geleitet wird und ein Raum 11, aus dem Öl an die Schraubenrotoren 5 in dem Schraubenrotorengehäuse 2 gespritzt und zu den Lagerstellen der Rotoren 5 geführt wird. Der Raum 8 ist eine Art Pufferraum und dient als Schalldämpfer am Auslaß des Schraubenrotorengehäuses für die verdichtete Luft. Der Durchgang aus dem Raum 8 in das Innere des Ölabscheidebehälters 1 ist als Drosselbohrung 12 ausgebildet. Zwischen den Flanschen 6 und 7 ist eine Formdichtung 13 vorgesehen. Der Raum 9 kann auch entfallen. Die angesammelte Luft wird dann auf andere Weise direkt dem Schraubenrotorengehäuse 2 zugeführt. Durch die Drosselbohrung 12 gelangt die verdichtete Luft in einen Ringraum 14 der radial innen von einer eingesetzten Ringwand 15 begrenzt ist. Innerhalb der Ringwand 15 ist zentrisch mit Abstand ein radial durchströmbares Ringfilter 16 eingesetzt Zwischen dem Ringfilter 16 und der Ringwand 15 ist ein Ringraum 14' vorhanden.The screw rotor housing 2 is fixed via a flange 6 to a counter flange 7 of the oil separator housing 2. Individual spaces are formed between the flanges 6, 7, specifically a space B through which the compressed compressed air is guided into the oil separating container 1, a space 9 through which the air sucked in by the air filter 10 is guided into the screw rotor housing 2 and a Space 11, from which oil is sprayed onto the screw rotors 5 in the screw rotor housing 2 and is guided to the bearing points of the rotors 5. The space 8 is a kind of buffer space and serves as a silencer at the outlet of the screw rotor housing for the compressed air. The passage from the space 8 into the interior of the oil separating tank 1 is designed as a throttle bore 12. A molded seal 13 is provided between the flanges 6 and 7. The space 9 can also be omitted. The accumulated air is then fed directly to the screw rotor housing 2 in another way. The compressed air enters an annular space 14 through the throttle bore 12 which is delimited radially on the inside by an inserted ring wall 15. A radially flowable ring filter 16 is inserted centrally within the ring wall 15 at a distance. Between the ring filter 16 and the ring wall 15 there is an annular space 14 '.

Die Drosselbohrung 12 mündet derart in den Ringraum 14, daß die verdichtete Luft dort tangential einmündet, wodurch für die in dem verdichteten Luftstrom enthaltenen Öltröpfchen eine Abscheidung durch Zyklonwirkung erreicht wird. Eine weitere Vorölabscheidung erfolgt bei Umströmen der verdichteten Luft um die Unterkante der Ringwand 15, wobei die Öltröpfchen direkt in den Ölsumpf 17 am Boden des Ölabscheidebehälters absinken können.The throttle bore 12 opens into the annular space 14 in such a way that the compressed air opens tangentially there, as a result of which cyclone action separates the oil droplets contained in the compressed air stream. A further pre-oil separation takes place when the compressed air flows around the lower edge of the ring wall 15, the oil droplets being able to sink directly into the oil sump 17 at the bottom of the oil separation container.

Die Ringwand 15 ist an ihrem oberen Ende durch einen Ringflansch 18, der die Ringwand nach radial innen und außen überragt, abgedeckt. Im einfachsten Fall sind die Ringwand 15 und der Ringflansch 18 miteinander z.B. vernietete oder verschweißte Blechteile. Die Ringwand 15 und der Ringflansch 18 bilden zusammen ein gemeinsames Einschubteil, das nach Abheben des oberen Deckels 19 des Ölabscheidebehälters einsetzbar ist. Auf die Lagerung dieses Einschubteiles am Ringfilter 16 wird nachfolgend noch näher eingegange werden.The ring wall 15 is covered at its upper end by an annular flange 18 which projects radially inwards and outwards beyond the ring wall. In the simplest case the ring wall 15 and the ring flange 18 are e.g. riveted or welded sheet metal parts. The ring wall 15 and the ring flange 18 together form a common insertion part which can be used after lifting off the upper cover 19 of the oil separating container. The storage of this insert part on the ring filter 16 will be discussed in more detail below.

Das nach Abnahme des Deckels 19 in das Innere des Ölabscheidebehälters 1 einführbare Ringfilter 16 ist an seiner unteren Stirnringfläche in einer Schale 20 gelagert. Die Schale 20 ist wiederum über eine Feder 21 auf dem Boden des Ölabscheidebehälters 1 abgestützt. An dem Dekkel 19 sind Anlageflächen 22 zur Erfassung der Ringflansches 18 oberhalb des Ringfilters 16 vorgesehen. Ist der Deckel 19 fest auf das Ölabscheidegehäuse 1 aufgesetzt, so ist das Ringfilter 16 eindeutig fixiert. Das aus Ringwand 15 und Ringflansch 18 bestehende Einschubteil ist zwischen der Anlagefläche 22 und der oberen Stirnringfläche des Ringfilters 16 eingespannt. Die Einspannung kann über Dichtung 23 erfolgen. Radial außen ist der Ringflansch 18 über eine Radialdichtung 24 gegenüber der Wand des Ölabscheidebehälters gedichtet. In der Schale 20 ist ein Schwimmer 25 angeordnet, der dafür sorgt, daß sich in der Schale 20 absetzendes Öl durch ein Rohr 26 abfließen und zu einem Ort niedrigeren Drucks abgeleitet werden kann.The ring filter 16, which can be inserted into the interior of the oil separating container 1 after the cover 19 has been removed, is mounted in a shell 20 on its lower end ring surface. The shell 20 is in turn supported by a spring 21 on the bottom of the oil separating tank 1. Contact surfaces 22 for detecting the ring flange 18 above the ring filter 16 are provided on the cover 19. If the cover 19 is firmly placed on the oil separator housing 1, the ring filter 16 is clearly fixed. The insert part consisting of ring wall 15 and ring flange 18 is clamped between the contact surface 22 and the upper end ring surface of the ring filter 16. The clamping can take place via seal 23. Radially on the outside, the ring flange 18 is sealed against the wall of the oil separator tank by a radial seal 24. A float 25 is arranged in the bowl 20, which ensures that oil settling in the bowl 20 flows off through a pipe 26 and can be discharged to a location of lower pressure.

Unterhalb des Schraubenrotorengehäuses 2 ist an der Außenwand des Ölabscheidebehälters im Bereich der Ölfüllung eine Ölfilterpatrone 27 und ein Mischventil 28 als Temperaturregler für den Ölkreislauf angeordnet. Über die Leitung 29 gelangt das Öl zum Ölkühler 30 und wieder zurück zum Mischventil 28. Das gefilterte Öl gelangt auf kürzestem Weg über eine Leitung 34 in den Ölverteil-Raum 11. Die Druckluft gelangt über Leitung 31 zum Nachkühler 32. Es werden die beiden Kühler 30 und 32 und der Antriebsmotor 3 von einem Lüfter 33 gekühlt.An oil filter cartridge 27 and a mixing valve 28 as a temperature regulator for the oil circuit are arranged below the screw rotor housing 2 on the outer wall of the oil separator tank in the region of the oil filling. Via line 29, the oil reaches the oil cooler 30 and back again to the mixing valve 28. The filtered oil reaches the oil distribution space 11 in the shortest way via a line 34. The compressed air reaches the aftercooler 32 via line 31. The two coolers become 30 and 32 and the drive motor 3 cooled by a fan 33.

Die Ölfilterpatrone 27 kann als Ölfilterpatrone 35 auch im Inneren des Ölabscheidebehälters 1 angeordnet sein. In diesem Fall ist sie am Boden dieses Behälters angeschraubt. Ihr ringförmiger Filtereinsatz wird von radial außen nach innen durchströmt. Das topfförmige Filtergehäuse ist an seiner durch eine Lochplatte abgedeckten offenen Seite mit einem zentralen Auslaß versehen, mit dem es auf einen Gewindestutzen 36 im Boden des Ölabscheidebehälters 1 so aufgeschraubt ist, daß die zur Rohseite des Filtereinsatzes führenden Lochplattenöffnungen frei im Inneren des Ölabscheidebehälters liegen.The oil filter cartridge 27 can also be arranged as an oil filter cartridge 35 in the interior of the oil separating container 1. In this case it is screwed to the bottom of this container. Its ring-shaped filter insert is flowed through radially from the outside to the inside. The cup-shaped filter housing is provided on its open side covered by a perforated plate with a central outlet, with which it is screwed onto a threaded connector 36 in the bottom of the oil separating container 1 so that the perforated plate openings leading to the raw side of the filter insert are freely located inside the oil separating container.

Auf dem geschlossenen Ende des topfförmigen Filterpatronengehäuses liegt die Schale 20 auf. Um die Filterpatrone 35, die am Umfang ihres geschlossenen Endes mit einem Vierkantprofil zum formschlüssigen Ansetzen eines Greiwerkzeuges versehen ist, mit einem üblichen Schraubsteckschlüssel greifen zu können, ist die Schale 20 mit einem Ring versehen, der das Vierkantprofil der Filterpatrone 35 umgreift. Zusätzlich ist im Inneren der Schale ein zentraler Sechskant 37 angebracht, an den bequem ein üblicher Steckschlüssel angesetzt werden kann. In der Schale 20 ist ein Schwimmer 25 vorgesehen, der zwar etwas anders als der nach Figur 3 aufgebaut ist, aber die gleiche Funktion erfüllt. Das Ableitungs-Rohr 26 ist bei der Ausführung der Schale 20 nach der hier beschriebenen Figur 5 flexibel gestaltet, da die Schale 20 beim Wechsel des Ölfilters 27 aus ihrer Lage entfernt werden muß.The shell 20 rests on the closed end of the pot-shaped filter cartridge housing. In order to be able to grip the filter cartridge 35, which is provided on the circumference of its closed end with a square profile for the form-fitting attachment of a gripping tool, with a conventional screwdriver, the shell 20 is provided with a ring which encompasses the square profile of the filter cartridge 35. In addition, a central hexagon 37 is attached to the inside of the shell, to which a conventional socket wrench can be conveniently attached. A float 25 is provided in the shell 20, which is constructed somewhat differently from that according to FIG. 3, but fulfills the same function. The drain pipe 26 is designed to be flexible in the execution of the shell 20 according to FIG. 5 described here, since the shell 20 must be removed from its position when the oil filter 27 is changed.

Die Anbringung des Ölfilters 35 im Inneren des Ölabscheidebehälters 1 hat den Vorteil, daß kein hochdruckfestes Patronengehäuse verwendet werden muß, da zwischen Filterroh- und Außenraum keine Druckdifferenz besteht. Das Filter 35 kann bei entferntem Deckel 19 zusammen mit dem Ringfilter 16 gewechselt werden. Um gleiche Wechselintervalle für die beiden Filter zu haben, werden deren Standzeiten zweckmäßigerweiße aufeinander abgestimmt.The attachment of the oil filter 35 in the interior of the oil separating container 1 has the advantage that no high-pressure-resistant cartridge housing has to be used, since there is no pressure difference between the raw filter space and the exterior. The filter 35 can be changed together with the ring filter 16 with the cover 19 removed. In order to have the same change intervals for the two filters, their service lives are expediently coordinated with one another.

Claims (9)

1. An air compressor plant, particularly with a helical rotor compressor which is cooled and lubricated by a fluid injected into the compressor and with an oil separating container (1), an air intake filter (10), an oil filter (27) and a fine oil separator (ring filter 16) in which the compressor housing (helical rotor housing 2) is constructed as a separate part which can be flanged onto the outside of the oil separator container (1) and in which there is within the flange (6) of the compressor housing an aperture which serves to discharge compressed air into the oil separator container (1), characterised in that also extending through the flange (6) is an aperture for supplying oil to the interior of the compressor and in that the apertures within the flange (6) of the compressor housing (helical rotor housing 2) lead into separate spaces.
2. A compressor plant according to Claim 1, characterised in that within the flange (6) of the compressor housing (helical rotor housing 2) there is also, leading into its interior an aperture for the drawing in of air which leads into a space (9).
3. A compressor plant according to Claim 1 or 2, characterised by the features:
. (a) the oil separating container (1) is spherical or cylindrical with a vertical axis,
(b) the compressor housing (helical rotor housing 2) is flanged on in the upper half of the cylindrical or spherical outer wall of the oil separating container (1), the axes of the rotors mounted therein extending substantially horizontally,
(c) the fine oil separator is an annular ring filter (16) through which the flow passes radially and which is disposed substantially centrally in relation to the vertical axis of the oil separating container (1) and which is closed at its bottom orifice by a float valve (25),
(d) between the radial outer wall of the fine oil separator (ring filter 16) and inner wall of the oil separating container (1) there is, separating this space into two only bottom-opening annular chambers (14,14'), an annular wall (15), the outer annular wall (14) being connected att/stop end to the space (8) into which the compressed air flows out of the compressor housing (helical rotor housing 2).
4. A compressor plant according to one of the precediing Claims, characterised in that the space (8) which serves to receive the compressed air is disposed between the flange (6) of the compressor housing (helical rotor housing 2) and the mating flange (7) of the oil separator housing (1) and is connected to the interior of the oil separating container (1) by a throttling bore (12).
5. A compressor plant according to one of the preceding Claims, characterised by the following features:
(a) the oil separating container (1) is closed from above by a cover (19) which covers the feed- in aperture for the fine oil separator (ring filter 16),
(b) bearing on spaced apart supporting surfaces (22) on the inside of the cover (19) is the upper annular end face of the fine oil separator (ring filter 16), while at the bottom it is mounted in elastically sealing-tight manner on a shell (20) containing the float valve (25) and mounted on the bottom of the oil seperating container (1).
6. A compressor plant according to one of the preceding Claims, characterised in that the shell (20) is mounted on a holder provided on the bottom of the oil separating container (1) for an oil filter disposed inside the oil separating container between the bottom of the oil separating container and the shell.
7. A compressor plant according to Claim 6, characterised in that the holder and the oil filter are integrated into one pot-shaped filter cartridge (35) adapted to be screwed onto the bottom of the oil separating container (1), the shell (20) bearing on the closed end of the housing of the filter cartridge (35) in which an annular filter insert is traversed from the outside inwardly and in which the cleaned oil leaves the filter cartridge and thus at the same time the oil separating container through an aperture provided centrally in the longitudinal axis of the filter and in the region of which the filter cartridge is screwed onto the bottom of the oil separating container, while the oil to be filtered enters the filter cartridge (35) through apertures provided in its housing.
8. A compressor plant according to Claim 7, characterised in that the filter cartridge (35) is on the periphery of its closed pot-shaped filter housing provided with a polygonal profile onto which it is possible axially to push a ring having a correspondingly negative profile and which is rigidly connected to the shell (20) and in that the shell (20) is provided in the axis of the ring connected to it with a central gripping cam (37) such as especially a quadrilateral or hexagonal profile.
9. A compressor plant according to one of the preceding Claims, characterised in that at its top end the annular wall (15) is connected to an annular flange (18) which projects radially beyond both sides of the annular wall (15), the annular flange (18) being clamped radially inwardly between the upper end face and bearing surface (22) of the cover (19) which supports that latter, the annular wall (15) bearing radially outwardly through a radial gasket (25) on the inside wall of the oil separating container (1).
EP86108044A 1985-06-20 1986-06-12 Compact air compression installation, especially with a screw compressor Expired - Lifetime EP0206153B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3521977 1985-06-20
DE19853521977 DE3521977A1 (en) 1985-06-20 1985-06-20 COMPACT AIR COMPRESSOR SYSTEM, ESPECIALLY WITH A SCREW-ROTOR COMPRESSOR

Publications (2)

Publication Number Publication Date
EP0206153A1 EP0206153A1 (en) 1986-12-30
EP0206153B1 true EP0206153B1 (en) 1990-09-19

Family

ID=6273674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86108044A Expired - Lifetime EP0206153B1 (en) 1985-06-20 1986-06-12 Compact air compression installation, especially with a screw compressor

Country Status (2)

Country Link
EP (1) EP0206153B1 (en)
DE (2) DE3521977A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4135442C1 (en) * 1991-10-23 1993-04-01 Mannesmann Ag, 4000 Duesseldorf, De

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DE19752167A1 (en) * 1997-02-24 1999-05-06 Maid Ludwig Compressor plant with ventilating fan and cooler at respective opposite ends
DE10033154C2 (en) * 2000-07-07 2003-08-28 Compair Drucklufttechnik Gmbh Screw compressor system
DE102014004726A1 (en) 2013-04-03 2014-10-09 Rotorcomp Verdichter Gmbh separating
DE202021102365U1 (en) 2021-05-03 2021-06-07 Renner Gmbh Fluid separation tank for compressor arrangements
CN115199540A (en) * 2022-08-17 2022-10-18 中国重汽集团济南动力有限公司 Novel screw air compressor for powder material tractor

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Publication number Priority date Publication date Assignee Title
GB783339A (en) * 1954-07-20 1957-09-25 Lead Wool Company Ltd Improvements in or relating to rotary air compressors
FR2171653A5 (en) * 1972-02-10 1973-09-21 Omphale Sa
GB2075597B (en) * 1980-05-02 1983-10-26 Hydrovane Compressor Rotary air compressors
IT1205440B (en) * 1981-04-01 1989-03-23 Armando Giovannini PERFECTED VANE ROTARY AIR COMPRESSOR

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4135442C1 (en) * 1991-10-23 1993-04-01 Mannesmann Ag, 4000 Duesseldorf, De

Also Published As

Publication number Publication date
EP0206153A1 (en) 1986-12-30
DE3674258D1 (en) 1990-10-25
DE3521977A1 (en) 1987-01-02

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