EP1043501B1 - Multistage piston compressor with oil filter - Google Patents
Multistage piston compressor with oil filter Download PDFInfo
- Publication number
- EP1043501B1 EP1043501B1 EP00106145A EP00106145A EP1043501B1 EP 1043501 B1 EP1043501 B1 EP 1043501B1 EP 00106145 A EP00106145 A EP 00106145A EP 00106145 A EP00106145 A EP 00106145A EP 1043501 B1 EP1043501 B1 EP 1043501B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- crankcase
- oil
- filter
- line
- booster compressor
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0207—Lubrication with lubrication control systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/19—Crankcase ventilation
Definitions
- the invention relates to a reciprocating compressor with a crankcase, which is provided with a venting device, wherein the venting device comprises an oil filter, which is connected on the inlet side with the crankcase and the outlet side with the atmosphere.
- a secondary compressor is used to increase the pressure of air or other environmentally friendly gases.
- the document DE-A-195 25 461 describes a conventional, from the atmosphere sucking compressor with an oil filter which is arranged in a separate, connected via lines to the crankcase housing, the input side to the crankcase and the output side connected to the suction line of the compressor and On the input side forms an oil collection chamber whose oil outlet is in communication with the crankcase.
- Document DE-A-197 29 439 describes an engine with an oil filter which is connected on the input side to the crankcase and on the output side to the intake passage of a turbocharger and has an oil collecting space whose oil outlet communicates with the crankcase via a non-return valve arranged in a horizontal return line stands.
- the invention is therefore based on the object to avoid the unwanted oil leakage in the venting of the crankcase, but at least to reduce drastically.
- the invention is based on the finding that only very little space is available to the wire mesh filter in the low-turbulence, that is to say the upper region of the crankcase.
- the consequent small passage area leaves only one low pressure loss, if the vent should work effectively and reliably.
- the low permissible pressure loss in turn leads to a correspondingly large-meshed wire mesh filter. This explains the high permeability for smaller and even larger oil droplets.
- the very fine filter used according to the invention which as a rule consists of a microfiber web, can reliably retain the oil components of the mist.
- the residual oil content can be reduced to less than 0.01 mg / m 3 .
- the micro-filter needs a correspondingly larger area, which is provided by the oil collection room.
- the wall of the oil collecting chamber forms an effective shield against direct oil application of the ultrafine filter.
- the surface of the ultrafine filter can thus also extend into areas of the crankcase, which can not be described as turbulence poor.
- the dripping oil from the ultrafine filter can be discharged continuously or intermittently from the oil collection chamber via the oil outlet in the crankcase. If a permanently open passage is provided, this is kept so small that a direct application of oil to the ultrafine filter is omitted.
- the superfine filter in a separate, connected via lines to the crankcase housing, wherein the oil collecting space connecting to the crankcase conduit includes a valve which assumes its closed position with the booster and its closed position when the booster is stationary.
- the micro-filter is so separated in this construction of the crankcase and is not subject to any restrictions, as regards its fine poredness and the size of the filter surface. These parameters can be adjusted for optimum separation of oil droplets and vapors, taking into account the allowable pressure drop.
- the oil outlet of the oil collection chamber is closed, so that the oil collection chamber is only on its inlet-side line, so the actual vent line, communicating with the crankcase and also baufzzit only on this line with pressure.
- the emptying of the oil collection chamber is done with stationary booster.
- the valve is arranged in a gradient section of the associated line and designed as a check valve, wherein it is held by the pressure in the crankcase in its closed position.
- the micro filter thus works automatically.
- the check valve is a very smooth valve whose valve body is lifted by the low flow at the start of the post-compressor and brought into the closed position. The opening is carried out under the dead weight of the valve body and the weight of the oil column from above.
- a safety valve which is connected to the line connecting the housing of the ultrafine filter on the inlet side with the crankcase, reliably prevents the build-up of an overpressure in the crankcase, if a fault should occur in the area of the ultrafine filter.
- the fine filter on the outlet side at least one further filter, preferably an activated carbon filter downstream.
- the residual oil content can thus be reduced to less than 0.005 mg / m 3 .
- the booster on a crankcase 1 which forms an oil sump 2. Due to leakage of the booster builds up in the crankcase 1, a pressure that requires the vent.
- a line 3 is connected to an oil filler neck 4 of the crankcase 1.
- the oil filler neck 4 represents an extremely low-turbulence area of the crankcase. Accordingly, the mist discharged into the conduit 3 will not be excessively loaded with oil and oil vapors.
- the line 3 leads to a micro-filter 5, which forms an oil collection chamber 6 on the input side.
- the oil collection chamber 6 is connected via a line 7 to the crankcase 1, with the interposition of a check valve 8, which is arranged in a vertical section of the line 7.
- the ultrafine filter 5 has a filter element which consists of a microfiber web.
- the fine poredness of the ultrafine filter makes it possible to virtually completely free the oil supplied via the line 3 from the oil.
- the surface of the ultrafine filter can be chosen so that the pressure loss is reduced to a level which ensures adequate and reliable ventilation of the crankcase 1.
- the oil dripping from the fine filter 5 collects in the oil collecting space 6.
- the pressure in the crankcase 1 keeps the check valve 8 closed, with the aid of a light spring. Will the re-compressor turned off, the pressure in the crankcase 1 is reduced via the line 3.
- the check valve 8 opens, under the weight of its valve member and under the weight of the pending in the line 7 and the oil collection chamber 6 oil column. The oil collection chamber 6 thus empties into the crankcase. 1
- the ultrafine filter 5 is followed by an activated carbon filter 9, which opens into the atmosphere.
- the residual oil content can be reduced in this way to less than 0.005 mg / m 3 .
- vent line does not necessarily have to be connected to the oil filler neck. However, it should depart from an area where there is little turbulence so that the vented mist contains as little oil as possible.
Abstract
Description
Die Erfindung betrifft einen Kolben-Nachverdichter mit einem Kurbelgehäuse, das mit einer Entlüftungseinrichtung versehen ist, wobei die Entlüftungseinrichtung ein Ölfilter aufweist, das einlaßsseitig mit dem Kurbelgehäuse und auslaßseitig mit der Atmosphäre verbunden ist. Ein derartiger Nachverdichter dient zur Druckerhöhung von Luft oder anderen umweltverträglichen Gasen.The invention relates to a reciprocating compressor with a crankcase, which is provided with a venting device, wherein the venting device comprises an oil filter, which is connected on the inlet side with the crankcase and the outlet side with the atmosphere. Such a secondary compressor is used to increase the pressure of air or other environmentally friendly gases.
Aufgrund von Leckverlusten baut sich im Kurbelgehäuse ein Druck auf, der die Entlüftung des Kurbelgehäuses erforderlich macht. Bei normalen Verdichtern, deren Saugseite auf Atmosphärendruck liegt, kann der entlüftete Gas-Öl-Nebel der Saugseite der Verdichter zugeführt werden. Dies verbietet sich bei Nachverdichtern, da diese mit Vordruck arbeiten. Daher wird hier der entlüftete Gas-Öl-Nebel durch das Ölfilter geführt und sodann in die Atmosphäre abgegeben.Due to leakage, a pressure builds up in the crankcase, which requires the venting of the crankcase. In normal compressors whose suction side is at atmospheric pressure, the deaerated gas-oil mist can be fed to the suction side of the compressor. This is not possible with re-compressors, as they work with preprinted form. Therefore, the deaerated gas-oil mist is passed through the oil filter and then released into the atmosphere.
Es hat sich gezeigt, daß die Ölfilter, bei denen es sich um Drahtgeflechtfilter handelt, nur von begrenzter Wirksamkeit sind. Die Folge ist, daß Öl in die Atmosphäre gelangt. Dies belastet die Umwelt und führt außerdem zu übermäßigem Ölverbrauch.It has been found that the oil filters, which are wire mesh filters, are of limited effectiveness. The result is that oil gets into the atmosphere. This pollutes the environment and also leads to excessive oil consumption.
Die Druckschrift DE-A-195 25 461 beschreibt einen konventionellen, aus der Atmosphäre ansaugenden Verdichter mit einem Ölfilter, das in einem gesonderten, über Leitungen mit dem Kurbelgehäuse verbundenen Gehäuse angeordnet, eingangsseitig an das Kurbelgehäuse und ausgangsseitig an die Saugleitung des Verdichters angeschlossen ist und eingangsseitig einen Ölsammelraum bildet, dessen Ölauslass mit dem Kurbelgehäuse in Verbindung steht.The document DE-A-195 25 461 describes a conventional, from the atmosphere sucking compressor with an oil filter which is arranged in a separate, connected via lines to the crankcase housing, the input side to the crankcase and the output side connected to the suction line of the compressor and On the input side forms an oil collection chamber whose oil outlet is in communication with the crankcase.
Die Druckschrift DE-A-197 29 439 beschreibt einen Motor mit einem Ölfilter, das eingangsseitig an das Kurbelgehäuse und ausgangsseitig an den Ansaugkanal eines Turboladers angeschlossen ist und einen Ölsammelraum aufweist, dessen Ölauslass mit dem Kurbelgehäuse über ein in einer horizontalen Rückleitung angeordnetes Rückschlagventil in Verbindung steht.Document DE-A-197 29 439 describes an engine with an oil filter which is connected on the input side to the crankcase and on the output side to the intake passage of a turbocharger and has an oil collecting space whose oil outlet communicates with the crankcase via a non-return valve arranged in a horizontal return line stands.
Der Erfindung liegt daher die Aufgabe zugrunde, den unerwünschten Ölaustritt bei der Entlüftung des Kurbelgehäuses zu vermeiden, mindestens aber drastisch zu reduzieren.The invention is therefore based on the object to avoid the unwanted oil leakage in the venting of the crankcase, but at least to reduce drastically.
Diese Aufgabe wird durch einen Nachverdichter mit den Merkmalen des Anspruch 1 gelöst.This object is achieved by a secondary compressor with the features of
Der Erfindung liegt die Erkenntnis zugrunde, daß dem Drahtgeflechtfilter im turbulenzarmen, also oberen Bereich des Kurbelgehäuses nur sehr wenig Raum zur Verfügung steht. Die dadurch bedingte kleine Durchtrittsfläche läßt nur einen geringen Druckverlust zu, sofern die Entlüftung wirksam und zuverlässig arbeiten soll. Der geringe zulässige Druckverlust wiederum führt zu einem entsprechend großmaschigen Drahtgeflechtfilter. Hieraus erklärt sich die hohe Durchlässigkeit für kleinere und sogar auch größere Öltröpfchen.The invention is based on the finding that only very little space is available to the wire mesh filter in the low-turbulence, that is to say the upper region of the crankcase. The consequent small passage area leaves only one low pressure loss, if the vent should work effectively and reliably. The low permissible pressure loss in turn leads to a correspondingly large-meshed wire mesh filter. This explains the high permeability for smaller and even larger oil droplets.
Das erfindungsgemäß verwendete Feinstfilter hingegen, das in der Regel aus einem Mikrofaservlies besteht, vermag die Ölbestandteile des Nebels zuverlässig zurückzuhalten. Der Restölgehalt kann auf weniger als 0,01 mg/m3 reduziert werden. Allerdings benötigt das Feinstfilter eine entsprechend größere Fläche, die durch den Ölsammelraum zur Verfügung gestellt wird.By contrast, the very fine filter used according to the invention, which as a rule consists of a microfiber web, can reliably retain the oil components of the mist. The residual oil content can be reduced to less than 0.01 mg / m 3 . However, the micro-filter needs a correspondingly larger area, which is provided by the oil collection room.
Sofern das Feinstfilter in das Kurbelgehäuse integriert ist, bildet die Wandung des Ölsammelraums eine wirksame Abschirmung gegen eine direkte Ölbeaufschlagung des Feinstfilters. Die Fläche des Feinstfilters kann sich also auch in Bereiche des Kurbelgehäuses hineinerstrecken, die nicht mehr als turbulenzarm bezeichnet werden können. Das vom Feinstfilter abtropfende Öl kann kontinuierlich oder intermittierend aus dem Ölsammelraum über dessen Ölauslaß in das Kurbelgehäuse abgegeben werden. Sofern ein permanent geöffneter Durchlaß vorgesehen ist, wird dieser so klein gehalten, daß eine direkte Ölbeaufschlagung des Feinstfilters unterbleibt. Bei der Erfindung wird vorgeschlagen, das Feinstfilter in einem gesonderten, über Leitungen mit dem Kurbelgehäuse verbundenen Gehäuse anzuordnen, wobei die den Ölsammelraum mit dem Kurbelgehäuse verbindende Leitung ein Ventil enthält, welches bei laufendem Nachverdichter seine Schließstellung und bei stillstehendem Nachverdichter seine Öffnungsstellung einnimmt.If the fine filter is integrated into the crankcase, the wall of the oil collecting chamber forms an effective shield against direct oil application of the ultrafine filter. The surface of the ultrafine filter can thus also extend into areas of the crankcase, which can not be described as turbulence poor. The dripping oil from the ultrafine filter can be discharged continuously or intermittently from the oil collection chamber via the oil outlet in the crankcase. If a permanently open passage is provided, this is kept so small that a direct application of oil to the ultrafine filter is omitted. In the invention, it is proposed to arrange the superfine filter in a separate, connected via lines to the crankcase housing, wherein the oil collecting space connecting to the crankcase conduit includes a valve which assumes its closed position with the booster and its closed position when the booster is stationary.
Das Feinstfilter ist also bei dieser Konstruktion vom Kurbelgehäuse separiert und unterliegt keinerlei Beschränkungen, was seine Feinporigkeit und die Größe der Filterfläche anbelangt. Diese Parameter lassen sich unter Berücksichtigung des zulässigen Druckverlusts auf eine optimale Abscheidung von Öltröpfchen und -dämpfen einstellen. Bei laufendem Nachverdichter ist der Ölauslaß des Ölsammelraums geschlossen, so daß der Ölsammelraum nur über seine einlaßseitige Leitung, also die eigentliche Entlüftungsleitung, mit dem Kurbelgehäuse in Verbindung steht und auch nur über diese Leitung mit Druck baufschlagt wird. Die Entleerung des Ölsammelraums geschieht bei stillstehendem Nachverdichter.The micro-filter is so separated in this construction of the crankcase and is not subject to any restrictions, as regards its fine poredness and the size of the filter surface. These parameters can be adjusted for optimum separation of oil droplets and vapors, taking into account the allowable pressure drop. In progress After-compressor, the oil outlet of the oil collection chamber is closed, so that the oil collection chamber is only on its inlet-side line, so the actual vent line, communicating with the crankcase and also baufschlagt only on this line with pressure. The emptying of the oil collection chamber is done with stationary booster.
Das Ventil ist in einem Gefälle-Abschnitt der zugehörigen Leitung angeordnet und als Rückschlagventil ausgebildet, wobei es durch den Druck im Kurbelgehäuse in seiner Schließstellung gehalten wird. Das Feinstfilter arbeitet also automatisch. Bei dem Rückschlagventil handelt es sich um ein sehr leichtgängiges Ventil, dessen Ventilkörper durch die geringe Strömung beim Anlaufend es Nachverdichters angehoben und in die Schließstellung gebracht wird. Das Öffnen erfolgt unter dem Eigengewicht des Ventilkörpers und dem Gewicht der von oben anstehenden Ölsäule. In der Regel wird es vorteilhaft sein, dem Rückschlagventil eine leichte Ventilfeder zuzuordnen, die die Bewegung des Ventilkörpers in die Schließstellung unterstützt.The valve is arranged in a gradient section of the associated line and designed as a check valve, wherein it is held by the pressure in the crankcase in its closed position. The micro filter thus works automatically. The check valve is a very smooth valve whose valve body is lifted by the low flow at the start of the post-compressor and brought into the closed position. The opening is carried out under the dead weight of the valve body and the weight of the oil column from above. In general, it will be advantageous to assign the check valve, a light valve spring, which supports the movement of the valve body in the closed position.
Wesentlich ist, daß die vom Ölauslaß des Feinstfilters zum Kurbelgehäuse führende Leitung einen Gefälleabschnitt für das Rückschlagventil aufweist. Besonders vorteilhafte Verhältnisse ergeben sich dadurch, daß das Feinstfilter direkt oberhalb des Kurbelgehäuses angeordnet wird.It is essential that the leading from the oil outlet of the ultrafine filter to the crankcase line has a slope section for the check valve. Particularly advantageous conditions result from the fact that the micro-filter is placed directly above the crankcase.
Um die Ölbelastung des Feinstfilters so gering wir möglich zu halten, wird vorgeschlagen, die das Gehäuse des Feinstfilters einlaßseitig mit dem Kurbelgehäuse verbindende Leitung an einen turbulenzarmen Bereich des Kurbelgehäuses anzuschließen, vorzugsweise an einen Öleinfüllstutzen, der eine optimale Abschirmung gewährleistet.In order to keep the oil contamination of the ultrafine filter as low as possible, it is proposed to connect the housing of the ultrafine filter on the inlet side with the crankcase connecting line to a low-turbulence region of the crankcase, preferably to an oil filler neck, which ensures optimum shielding.
Ein Sicherheitsventil, das an die das Gehäuse des Feinstfilters einlaßseitig mit dem Kurbelgehäuse verbindende Leitung angeschlossen ist, verhindert zuverlässig den Aufbau eines Überdrucks im Kurbelgehäuse, sofern im Bereich des Feinstfilters eine Störung auftreten sollte.A safety valve, which is connected to the line connecting the housing of the ultrafine filter on the inlet side with the crankcase, reliably prevents the build-up of an overpressure in the crankcase, if a fault should occur in the area of the ultrafine filter.
Zur Optimierung der Ölabscheidung kann dem Feinstfilter auslaßseitig mindestens ein weiterer Filter, vorzugsweise ein Aktivkohlefilter nachgeschaltet sein. Der Restölgehalt läßt sich damit auf weniger als 0,005 mg/m3 reduzieren.To optimize the oil separation, the fine filter on the outlet side, at least one further filter, preferably an activated carbon filter downstream. The residual oil content can thus be reduced to less than 0.005 mg / m 3 .
Die Erfindung wird im folgenden anhand eines bevorzugten Ausführungsbeispiels im Zusammenhang mit der beiliegenden Zeichnung näher erläutert. Die Zeichnung zeigt in:
Figur 1 eine schematische Darstellung eines Kolben-Nachverdichters mit zugehöriger Entlüftungseinrichtung.
- Figure 1 is a schematic representation of a piston booster with associated venting device.
Nach Figur 1 weist der Nachverdichter ein Kurbelgehäuse 1 auf, welches einen Ölsumpf 2 bildet. Aufgrund von Leckverlusten des Nachverdichters baut sich im Kurbelgehäuse 1 ein Druck auf, der der Entlüftung bedarf. Hierzu ist eine Leitung 3 an einen Öleinfüllstutzen 4 des Kurbelgehäuse 1 angeschlossen. Der Öleinfüllstutzen 4 stellt einen extrem turbulenzarmen Bereich des Kurbelgehäuses dar. Dementsprechend wird der in die Leitung 3 abgegebene Nebel nicht übermäßig stark mit Öl und Öldämpfen belastet sein.According to Figure 1, the booster on a
Die Leitung 3 führt zu einem Feinstfilter 5, welches eingangsseitig einen Ölsammelraum 6 bildet. Der Ölsammelraum 6 ist über eine Leitung 7 an das Kurbelgehäuse 1 angeschlossen, und zwar unter Zwischenschaltung eines Rückschlagventils 8, welches in einem senkrechten Abschnitt der Leitung 7 angeordnet ist.The
Das Feinstfilter 5 weist ein Filterelement auf, welches aus einem Mikrofaservlies besteht. Die Feinporigkeit des Feinstfilters gestattet es, den über die Leitung 3 zugeführten Nebel praktisch vollständig von Öl zu befreien. Dabei kann die Fläche des Feinstfilters so gewählt werden, daß der Druckverlust auf ein Maß vermindert wird, welches eine ausreichende und zuverlässige Entlüftung des Kurbelgehäuses 1 sicherstellt.The
Das vom Feinstfilter 5 abtropfende Öl sammelt sich im Ölsammelraum 6. Bei laufendem Nachverdichter hält der Druck im Kurbelgehäuse 1 das Rückschlagventil 8 geschlossen, und zwar unter Mithilfe einer leichten Feder. Wird der Nachverdichter abgestellt, so wird der Druck im Kurbelgehäuse 1 über die Leitung 3 abgebaut. Das Rückschlagventil 8 öffnet sich, und zwar unter dem Eigengewicht seines Ventilelements sowie unter dem Gewicht der in der Leitung 7 und im Ölsammelraum 6 anstehende Ölsäule. Der Ölsammelraum 6 entleert sich also in das Kurbelgehäuse 1.The oil dripping from the
Dem Feinstfilter 5 ist ein Aktivkohlefilter 9 nachgeschaltet, welches sich in die Atmosphäre öffnet. Der Restölgehalt kann auf diese Weise auf unter 0,005 mg/m3 reduziert werden.The
Sollte während des Betriebes eine Störung im Feinstfilter 5 oder im Aktivkohlefilter 9 auftreten, so sorgt ein Sicherheitsventil 10, das an die Leitung 3 angeschlossen ist, dafür, daß im Kurbelgehäuse 1 kein unzulässiger Überdruck auftritt.If a malfunction in the micro-filter 5 or in the activated
Im Rahmen der Erfindung sind durchaus Abwandlungsmöglichkeiten gegeben. Die eigentliche Entlüftungsleitung muß nicht unbedingt am Öleinfüllstutzen angeschlossen sein. Allerdings sollte sie von einem Bereich abgehen, in dem nur geringe Turbulenzen herrschen, so daß also der entlüftete Nebel möglichst wenig Öl enthält.In the context of the invention are quite possible Abwandlungsmöglichkeiten. The actual vent line does not necessarily have to be connected to the oil filler neck. However, it should depart from an area where there is little turbulence so that the vented mist contains as little oil as possible.
Claims (5)
- Reciprocating booster compressor with a crankcase (1), in which
the crankcase (1) is provided with a venting device, the venting device comprising an oil filter connected on the inlet side to the crankcase (1) and on the outlet side to the atmosphere,
the oil filter is designed as an ultrafine filter (5) and has an oil collection space (6) on the inlet side with an oil outlet, the oil outlet being connected to the crankcase (1),
the ultrafine filter (5) is arranged in a separate housing connected via lines (3, 7) to the crankcase (1), wherein the line (7) connecting the oil outlet of the oil collection space (6) to the crankcase (1) contains a valve, which is in its closed position when the booster compressor is running, and its open position when the booster compressor is off, and
the valve is arranged in a sloping section of the corresponding line (7) and designed as a check valve (8), being held in its closed position by the pressure in crankcase (1). - Booster compressor according to Claim 1, characterised in that the line (3) connecting the housing of the ultrafine filter (5) on the inlet side with the crankcase (1) is connected to a region of crankcase (1) low in turbulence.
- Booster compressor (1) according to Claim 2, characterised in that the line (3) connecting the housing of the ultrafine filter (5) on the inlet side with the crankcase (1) is connected to an oil filler neck (4) of crankcase (1).
- Booster compressor according to one of the Claims 1 to 3, characterised in that the line (3) connecting the housing of the ultrafine filter on the inlet side to crankcase (1) is connected to a safety valve (10).
- Booster compressor according to one of the Claims 1 to 4, characterised in that at least one further filter, preferably an activated carbon filter (9), is connected downstream of the outlet side of the ultrafine filter (5).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19916172 | 1999-04-10 | ||
| DE19916172A DE19916172C2 (en) | 1999-04-10 | 1999-04-10 | Piston booster |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1043501A2 EP1043501A2 (en) | 2000-10-11 |
| EP1043501A3 EP1043501A3 (en) | 2001-02-28 |
| EP1043501B1 true EP1043501B1 (en) | 2006-10-11 |
Family
ID=7904102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00106145A Expired - Lifetime EP1043501B1 (en) | 1999-04-10 | 2000-03-21 | Multistage piston compressor with oil filter |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6398828B1 (en) |
| EP (1) | EP1043501B1 (en) |
| JP (1) | JP2000303955A (en) |
| AT (1) | ATE342442T1 (en) |
| DE (2) | DE19916172C2 (en) |
| SG (1) | SG82075A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2439384B (en) * | 2006-06-19 | 2009-08-12 | Allan Hopkins | Pump Apparatus |
| DE102018208970A1 (en) * | 2018-06-06 | 2019-12-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Compressor, heat pump or air conditioning or cold machine and method of compacting |
| CN112610454B (en) * | 2021-01-17 | 2022-08-12 | 佛山市悟空动力科技有限公司 | Compressor housing and compressor |
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| US4063855A (en) * | 1976-05-03 | 1977-12-20 | Fuller Company | Compressor capacity and lubrication control system |
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| GB2168262B (en) * | 1984-12-18 | 1989-01-05 | Leslie Donald Selsdon | Filter units |
| DE3641331C1 (en) * | 1986-12-03 | 1988-01-28 | Argo Feinmechanik | Liquid filter, in particular oil filter |
| JPH089992B2 (en) * | 1990-06-19 | 1996-01-31 | トキコ株式会社 | Multi-stage compressor |
| US5113836A (en) * | 1990-06-25 | 1992-05-19 | Ventures Unlimited, Inc. | Filter for lowering harmful crankcase emissions in an internal combustion engine |
| JPH06323671A (en) * | 1993-05-14 | 1994-11-25 | Sanyo Electric Co Ltd | Gas compressor expander |
| US5586996A (en) * | 1994-05-12 | 1996-12-24 | Manookian, Jr.; Arman K. | Vapor separating device |
| US5479907A (en) * | 1994-07-12 | 1996-01-02 | Walker, Jr.; Robert A. | Combination in-line air-filter/air-oil separator/air-silencer with preseparator |
| DE19525461A1 (en) * | 1995-07-14 | 1997-01-16 | Knorr Bremse Systeme | Piston compressor with air-outlet in crank housing - has housing outlet connected to suction wing of piston compressor via connecting pipe, and having lubricant separator with collection chamber for separated lubricants |
| DE19618413A1 (en) * | 1996-05-08 | 1997-11-13 | Mann & Hummel Filter | Oil mist removal element for use in combustion engines |
| IT1285384B1 (en) * | 1996-05-31 | 1998-06-03 | Pall Corp | PURIFIER DEVICE FOR A BREATHER CIRCUIT OF A CRANKCASE OF AN ENDOTHERMIC ENGINE, AND BREATHER CIRCUIT FITTED WITH THIS DEVICE |
| US5669366A (en) * | 1996-07-10 | 1997-09-23 | Fleetguard, Inc. | Closed crankcase ventilation system |
| DE19631654A1 (en) * | 1996-08-05 | 1998-02-19 | Hatz Motoren | Ventilation device for the crankcase of an internal combustion engine |
| WO1997044581A1 (en) * | 1996-12-09 | 1997-11-27 | Hideaki Watase | Combustion enhancing apparatus |
| US5853439A (en) * | 1997-06-27 | 1998-12-29 | Donaldson Company, Inc. | Aerosol separator and method |
| US5937837A (en) * | 1997-12-09 | 1999-08-17 | Caterpillar Inc. | Crankcase blowby disposal system |
-
1999
- 1999-04-10 DE DE19916172A patent/DE19916172C2/en not_active Expired - Fee Related
-
2000
- 2000-03-21 DE DE50013582T patent/DE50013582D1/en not_active Expired - Fee Related
- 2000-03-21 EP EP00106145A patent/EP1043501B1/en not_active Expired - Lifetime
- 2000-03-21 AT AT00106145T patent/ATE342442T1/en not_active IP Right Cessation
- 2000-03-22 SG SG200001712A patent/SG82075A1/en unknown
- 2000-04-10 US US09/545,972 patent/US6398828B1/en not_active Expired - Fee Related
- 2000-04-10 JP JP2000107437A patent/JP2000303955A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| ATE342442T1 (en) | 2006-11-15 |
| DE50013582D1 (en) | 2006-11-23 |
| SG82075A1 (en) | 2001-07-24 |
| DE19916172C2 (en) | 2001-05-31 |
| DE19916172A1 (en) | 2000-10-19 |
| US6398828B1 (en) | 2002-06-04 |
| JP2000303955A (en) | 2000-10-31 |
| EP1043501A2 (en) | 2000-10-11 |
| EP1043501A3 (en) | 2001-02-28 |
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