EP2003339A2 - Rotary piston machine - Google Patents

Rotary piston machine Download PDF

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Publication number
EP2003339A2
EP2003339A2 EP08007258A EP08007258A EP2003339A2 EP 2003339 A2 EP2003339 A2 EP 2003339A2 EP 08007258 A EP08007258 A EP 08007258A EP 08007258 A EP08007258 A EP 08007258A EP 2003339 A2 EP2003339 A2 EP 2003339A2
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EP
European Patent Office
Prior art keywords
housing
rotary piston
bypass channel
conveyor housing
machine according
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.)
Withdrawn
Application number
EP08007258A
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German (de)
French (fr)
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EP2003339A3 (en
Inventor
Stefan Kröss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Magna Powertrain Hueckeswagen GmbH
Original Assignee
Ixetic Hueckeswagen GmbH
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Ixetic Hueckeswagen GmbH filed Critical Ixetic Hueckeswagen GmbH
Publication of EP2003339A2 publication Critical patent/EP2003339A2/en
Publication of EP2003339A3 publication Critical patent/EP2003339A3/en
Withdrawn legal-status Critical Current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
    • 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
    • F04C18/126—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 radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F04C28/26—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
    • F01C1/126—Rotary-piston machines or engines 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 elements extending radially from the rotor body not necessarily cooperating with corresponding recesses in the other rotor, e.g. lobes, Roots type

Definitions

  • the invention relates to a rotary piston machine, with a at least two rotary piston enclosing, bounded by two mutually parallel side walls conveyor housing on which at least one inlet and at least one outflow channel is provided, wherein the rotary piston mounted on a in the side walls of the conveyor housing and through one of these side walls are attached through outwardly guided shaft and wherein a pressure side of the conveying housing is connected to a suction side thereof by a bypass passage which extends along one of these side walls and having a pressure relief valve.
  • the invention has for its object to find a suitable for the clutch-free, space-saving installation in the engine compartment of a motor vehicle, cost-producible rotary piston machine, which generates a suitable value of suction or delivery pressures as a blower or compressor even at widely varying rotational speeds.
  • a rotary piston machine 1 designed according to the construction according to Roots, has a delivery housing 4 which is made of light metal and has two rotary pistons 2, 3 and is delimited by two parallel side walls 5, 6 and a peripheral outer wall 7. One of these side walls 5 is integrally in the outer wall 7, so that a housing shell 8 is formed by them together.
  • a second housing shell 9 forms with its bottom wall, the other side wall 6 of the conveyor housing 4 and is closed by a parallel lid wall 10 to limit a transmission housing 11.
  • the intake manifold 12 opens parallel to the axes of rotation of the rotary piston 2.3 in the conveyor housing 4.
  • On the opposite side of the elongated or oval conveyor housing 4 performs a pressure-side connecting piece 13 radially outward.
  • the pressure side of the conveyor housing 4 is connected to its suction side by a bypass channel 17, which has a pressure relief valve 14.
  • This bypass channel 17 consists for example of two provided in the side wall 6 of the conveyor housing 4 openings 15,16 and guided along this side wall 6 channel 17 '.
  • the bypass channel 17 has an elongated recess in the side wall 6 formed channel 17 'with a stepped, circumferential edge 18, for positive reception of the edge region of a manhole cover 19.
  • the channel 17' extends transversely to one of the drive shafts 20, 21 of the rotary piston 2.3 connecting line 22.
  • This arrangement of the channel 17 'in addition to its basically space-saving design has the further advantage that when the pressure relief valve 14 at one end of the channel 17', this in one of the gears 23, 24 of the rotary piston drive unused area of arranged next to the conveyor housing 4 gear housing 11 is located.
  • valve housing 25 of the pressure relief valve 14 is formed. This encloses a telescopically designed as a hollow piston closure member 26 so that the inner surface of the valve housing 25 forms a cylindrical surface 27 for this.
  • the closing pressure of the pressure relief valve 14 determining valve spring 28 is located on the one hand at the bottom 29 of the valve housing 25 and on the other hand at the bottom 30 of the closing body 26 and is thus trapped between the valve housing and the closing body 26.
  • the gear wheels 23,24 bearing drive shafts 20,21 of the rotary piston 2,3 are preferably designed as hollow shafts. Their elasticity can compensate for thermal stresses more easily. In addition, this allows Elasticity in a simpler way, the connection with the rotary piston 2,3 and / or gears 23,24 by a press fit and allows greater manufacturing tolerances and thus easier production of the machine.
  • the gears 23,24 are made of a different, metallic material to reduce wear, for example, one made of steel and the other is made of bronze. Such a material combination also reduces the noise of the meshing gears 23,24.

Abstract

The machine has two rotary pistons and conveyor housing, which is bounded by two parallel side walls (5, 6). A pressure side of the conveyor housing is connected with a suction side of the conveyor housing by a bypass channel (17). The side walls including the bypass channel extend as an intermediate wall between the conveyor housing and gear wheels for controlling rotary piston movements including gear box casing. One of the gear wheels is made of steel and the other gear wheel is made of non ferrous metal.

Description

Die Erfindung betrifft eine Rotationskolbenmaschine, mit einem mindestens zwei Rotationskolben einschließenden, durch zwei zueinander parallele Seitenwände begrenzten Fördergehäuse, an dem mindestens ein Zu- und mindestens ein Abströmkanal vorgesehen ist, wobei die Rotationskolben auf einer in den Seitenwänden des Fördergehäuses gelagerten und durch eine dieser Seitenwände hindurch nach außen geführten Welle befestigt sind und wobei eine Druckseite des Fördergehäuses mit einer Saugseite desselben durch einen Bypasskanal verbunden ist, der entlang einer dieser Seitenwände verläuft und ein Überdruckventil aufweist.The invention relates to a rotary piston machine, with a at least two rotary piston enclosing, bounded by two mutually parallel side walls conveyor housing on which at least one inlet and at least one outflow channel is provided, wherein the rotary piston mounted on a in the side walls of the conveyor housing and through one of these side walls are attached through outwardly guided shaft and wherein a pressure side of the conveying housing is connected to a suction side thereof by a bypass passage which extends along one of these side walls and having a pressure relief valve.

Maschinen dieser Art sind in zahlreichen Ausführungsformen und Anwendungen bekannt. Eine übersichtliche Zusammenstellung möglicher Bauarten hat den Titel " Rotary Piston Machine", London, Iliffe, 1965 ). Durch die US 1694805 sind Ausführungsformen solcher Rotationskolbenmaschinen bekannt, bei denen die Druckseite des Fördergehäuses mit seiner Saugseite durch einen Bypasskanal verbunden ist, der entlang einer Seitenwand des Fördergehäuses verläuft.Machines of this type are known in numerous embodiments and applications. A clear compilation of possible designs has the title " Rotary Piston Machine, London, Iliffe, 1965 ). By the US 1694805 Embodiments of such rotary piston machines are known in which the pressure side of the conveyor housing is connected to its suction side by a bypass channel which extends along a side wall of the conveyor housing.

Der Erfindung liegt die Aufgabe zugrunde, eine für den kupplungsfreien, raumsparenden Einbau im Motorraum eines Kraftfahrzeuges geeignete, kostengünstig herstellbare Rotationskolbenmaschine zu finden, die als Gebläse oder Kompressor auch bei in breitem Bereich wechselnden Drehgeschwindigkeiten einen anwendungsgerechten Wert von Saug- oder Förderdrücken erzeugt.The invention has for its object to find a suitable for the clutch-free, space-saving installation in the engine compartment of a motor vehicle, cost-producible rotary piston machine, which generates a suitable value of suction or delivery pressures as a blower or compressor even at widely varying rotational speeds.

Die Lösung dieser Aufgabe erfolgt für eine Rotationskolbenmaschine der eingangs genannten Art erfindungsgemäß dadurch, dass eine den Bypasskanal einschließende Seitenwand sich als Zwischenwand zwischen dem Fördergehäuse und einem Mittel zur Steuerung der Rotationskolbenbewegung einschließenden Getriebegehäuse erstreckt.The solution of this object is achieved for a rotary piston machine of the type mentioned according to the invention in that a bypass channel enclosing the side wall extending as an intermediate wall between the conveyor housing and a means for controlling the rotary piston movement enclosing gear housing.

Vorteilhafte Ausführungsformen der Erfindung sind Gegenstand der abhängigen Patentansprüche und der folgenden Beschreibung anhand der Zeichnungen zu entnehmen. Es zeigt:

  • Fig. 1 einen durch ihren Zu- und Abströmstutzen geführten Querschnitt einer zwei Drehkolben aufweisenden, außenachsigen Rotationskolbenmaschine,
  • Fig. 2 einen quer zum Querschnitt nach Fig.1 geführten und beide Achsen der Drehkolben beinhaltenden Querschnitt durch die Maschine nach Fig.1,
  • Fig. 3 eine perspektivische Darstellung der Drehkolben der Maschine nach Fig.1 und 2 mit deren Antriebswellen ,
  • Fig. 4 eine in den Innenraum gerichtete, perspektivische Ansicht einer Gehäuseschale des Getriebegehäuses der Maschine nach Fig.1 und 2 und
  • Fig.5 eine perspektivische Darstellung des Bypassdeckels der Maschine nach Fig. 1 und 2 mit zugehörigem Schließkörper und Ventilfeder.
Advantageous embodiments of the invention are subject matter of the dependent claims and the following description with reference to the drawings. It shows:
  • Fig. 1 a guided through its inlet and outlet nozzle cross-section of a two rotary piston having, external-axis rotary piston machine,
  • Fig. 2 one transverse to the cross section Fig.1 guided and both axes of the rotary piston-containing cross section through the machine after Fig.1 .
  • Fig. 3 a perspective view of the rotary piston of the machine after Fig.1 and 2 with their drive shafts,
  • Fig. 4 directed into the interior, perspective view of a housing shell of the transmission housing of the machine after Fig.1 and 2 and
  • Figure 5 a perspective view of the bypass cover of the machine after Fig. 1 and 2 with associated closing body and valve spring.

Eine erfindungsgemäße, beispielsweise entsprechend der Bauweise nach Roots ausgeführte Rotationskolbenmaschine 1 hat beim dargestellten Ausführungsbeispiel ein zwei Drehkolben 2,3 einschließendes, aus Leichtmetall im Druckgussverfahren hergestelltes Fördergehäuse 4, das durch zwei zueinander parallele Seitenwände 5,6 und eine umlaufende Außenwand 7 begrenzt ist. Eine dieser Seitenwände 5 geht einstückig in die Außenwand 7 über, so dass durch sie gemeinsam eine Gehäuseschale 8 gebildet ist. Eine zweite Gehäuseschale 9 bildet mit ihrer Bodenwand die andere Seitenwand 6 des Fördergehäuses 4 und ist durch eine dazu parallele Deckelwand 10 geschlossen, um ein Getriebegehäuse 11 zu begrenzen. Der Ansaugstutzen 12 mündet parallel zu den Drehachsen der Drehkolben 2,3 in das Fördergehäuse 4. Auf der gegenüberliegenden Seite des länglichen bzw. ovalen Fördergehäuses 4 führt ein druckseitiger Anschlussstutzen 13 radial nach außen.In the illustrated embodiment, a rotary piston machine 1 according to the invention, designed according to the construction according to Roots, has a delivery housing 4 which is made of light metal and has two rotary pistons 2, 3 and is delimited by two parallel side walls 5, 6 and a peripheral outer wall 7. One of these side walls 5 is integrally in the outer wall 7, so that a housing shell 8 is formed by them together. A second housing shell 9 forms with its bottom wall, the other side wall 6 of the conveyor housing 4 and is closed by a parallel lid wall 10 to limit a transmission housing 11. The intake manifold 12 opens parallel to the axes of rotation of the rotary piston 2.3 in the conveyor housing 4. On the opposite side of the elongated or oval conveyor housing 4 performs a pressure-side connecting piece 13 radially outward.

Zur Vermeidung eines für die gewählte Anwendung der Maschine zu hohen Druckgefälles zwischen Saug- und Druckseite der Maschine, wenn infolge ihrer direkter Kupplung mit dem Antriebssystem eines Kraftfahrzeuges höhere Drehgeschwindigkeiten entstehen, ist die Druckseite des Fördergehäuses 4 mit seiner Saugseite durch einen Bypasskanal 17 verbunden, der ein Überdruckventil 14 aufweist. Dieser Bypasskanal 17 besteht beispielsweise aus zwei in der Seitenwand 6 des Fördergehäuses 4 vorgesehenen Öffnungen 15,16 und einem entlang dieser Seitenwand 6 geführten Kanal 17'.To avoid too high a pressure gradient between the suction and discharge side of the machine for the selected application of the machine, If higher rotational speeds occur as a result of their direct coupling with the drive system of a motor vehicle, the pressure side of the conveyor housing 4 is connected to its suction side by a bypass channel 17, which has a pressure relief valve 14. This bypass channel 17 consists for example of two provided in the side wall 6 of the conveyor housing 4 openings 15,16 and guided along this side wall 6 channel 17 '.

Wie die Darstellungen der Fig.1,2 und 4 erkennen lassen, hat der Bypasskanal 17 einen als längliche Vertiefung in der Seitenwand 6 ausgebildet Kanal 17' mit einem abgestuften, umlaufenden Rand 18, zur formschlüssigen Aufnahme des Randbereichs eines Kanaldeckels 19. Dabei erstreckt sich der Kanal 17' quer zu einer die Antriebswellen 20,21 der Drehkolben 2,3 verbindenden Linie 22. Diese Anordnung des Kanals 17' hat neben seiner grundsätzlich Raum sparenden Ausführung den weiteren Vorteil, dass bei Anordnung des Überdruckventils 14 an einem Ende des Kanals 17', dieses sich in einem von den Zahnrädern 23,24 des Drehkolbenantriebs nicht benutzten Bereich des neben dem Fördergehäuse 4 angeordneten Getriebegehäuses 11 befindet.Like the representations of the Fig.1,2 and 4 can be seen, the bypass channel 17 has an elongated recess in the side wall 6 formed channel 17 'with a stepped, circumferential edge 18, for positive reception of the edge region of a manhole cover 19. In this case, the channel 17' extends transversely to one of the drive shafts 20, 21 of the rotary piston 2.3 connecting line 22. This arrangement of the channel 17 'in addition to its basically space-saving design has the further advantage that when the pressure relief valve 14 at one end of the channel 17', this in one of the gears 23, 24 of the rotary piston drive unused area of arranged next to the conveyor housing 4 gear housing 11 is located.

An einem Ende des den Bypasskanal 17 verschließenden Kanaldeckels 19 ist entsprechend den Darstellungen in Fig.1 und 5 becherförmig das Ventilgehäuse 25 des Überdruckventils 14 angeformt. Dieses umschließt teleskopartig einen als Hohlkolben ausgebildeten Schließkörper 26, so dass die Innenfläche des Ventilgehäuses 25 für diesen eine Zylinderfläche 27 bildet. Die den Schließdruck des Überdruckventils 14 bestimmende Ventilfeder 28 liegt einerseits am Boden 29 des Ventilgehäuses 25 und anderseits am Boden 30 des Schließkörpers 26 an und ist somit zwischen dem Ventilgehäuse und dem Schließkörper 26 eingeschlossen.At one end of the bypass channel 17 closing the channel cover 19 is shown in FIGS Fig.1 and 5 cup-shaped, the valve housing 25 of the pressure relief valve 14 is formed. This encloses a telescopically designed as a hollow piston closure member 26 so that the inner surface of the valve housing 25 forms a cylindrical surface 27 for this. The closing pressure of the pressure relief valve 14 determining valve spring 28 is located on the one hand at the bottom 29 of the valve housing 25 and on the other hand at the bottom 30 of the closing body 26 and is thus trapped between the valve housing and the closing body 26.

Da die Ausführung des Gehäuses einer erfindungsgemäßen Maschine aus Leichtmetall zu gegenüber anderen Metallen, z.B. für die Zahnräder 23,24, größeren Wärmedehnungen führt, sind die auch die Zahnräder 23,24 tragenden Antriebswellen 20,21 der Drehkolben 2,3 vorzugsweise als Hohlwellen ausgeführt. Deren Elastizität kann Wärmespannungen leichter kompensieren. Außerdem ermöglicht diese Elastizität auf einfachere Weise die Verbindung mit den Drehkolben 2,3 und/oder Zahnrädern 23,24 durch eine Presspassung und gestattet dabei größere Fertigungstoleranzen und damit eine einfachere Herstellung der Maschine.Since the execution of the housing of a machine according to the invention of light metal relative to other metals, eg for the gears 23,24, larger thermal expansions, the gear wheels 23,24 bearing drive shafts 20,21 of the rotary piston 2,3 are preferably designed as hollow shafts. Their elasticity can compensate for thermal stresses more easily. In addition, this allows Elasticity in a simpler way, the connection with the rotary piston 2,3 and / or gears 23,24 by a press fit and allows greater manufacturing tolerances and thus easier production of the machine.

In weiterer, bevorzugter Ausführung einer erfindungsgemäßen Maschine sind zur Verminderung von Verschleiß die Zahnräder 23,24 aus einem unterschiedlichen, metallischen Material ausgeführt, indem beispielsweise eines aus Stahl und das andere aus Bronze gefertigt ist. Eine solche Materialpaarung verringert auch die Geräuschbildung der miteinander kämmenden Zahnräder 23,24.In a further, preferred embodiment of a machine according to the invention, the gears 23,24 are made of a different, metallic material to reduce wear, for example, one made of steel and the other is made of bronze. Such a material combination also reduces the noise of the meshing gears 23,24.

Claims (7)

Rotationskolbenmaschine, mit einem mindestens zwei Rotationskolben (2,3) einschließenden, durch zwei zueinander parallele Seitenwände (5,6) begrenzten Fördergehäuse (4), an dem mindestens ein Zu- und mindestens ein Abströmkanal (12,13) vorgesehen ist, wobei die Rotationskolben (2,3) auf einer in den Seitenwänden (5,6) des Fördergehäuses (4) gelagerten und durch eine dieser Seitenwände (6) hindurch nach außen geführten Welle (20,21) befestigt sind und wobei eine Druckseite des Fördergehäuses (4) mit einer Saugseite desselben durch einen Bypasskanal (17) verbunden ist, der entlang einer dieser Seitenwände (6) verläuft und ein Überdruckventil (14) aufweist, dadurch gekennzeichnet, dass eine den Bypasskanal (17) einschließende Seitenwand (6) sich als Zwischenwand zwischen dem Fördergehäuse (4) und einem Mittel (23,24) zur Steuerung der Rotationskolbenbewegung einschließenden Getriebegehäuse (11) erstreckt.Rotary piston machine, with a at least two rotary piston (2,3) enclosing, by two parallel side walls (5,6) limited conveyor housing (4) on which at least one inlet and at least one outflow channel (12,13) is provided, wherein the Rotary piston (2,3) on one in the side walls (5,6) of the conveyor housing (4) mounted and through one of these side walls (6) out through outwardly guided shaft (20,21) are fastened and wherein a pressure side of the conveyor housing (4 ) is connected to a suction side thereof by a bypass channel (17) which runs along one of these side walls (6) and has an overpressure valve (14), characterized in that a side wall (6) enclosing the bypass channel (17) intersects between the transmission housing (4) and a means (23,24) for controlling the rotary piston movement enclosing gear housing (11). Maschine nach Anspruch 1, dadurch gekennzeichnet, dass ein Bereich des Kanaldeckels (19) des Bypasskanals (17) als Ventilgehäuse (25) eines Überdruckventils (14) ausgebildet ist.Machine according to claim 1, characterized in that an area of the manhole cover (19) of the bypass channel (17) is designed as a valve housing (25) of a pressure relief valve (14). Maschine nach Anspruch 2, dadurch gekennzeichnet, dass das Ventilgehäuse (25) becherförmig und teleskopartig einen als Hohlkolben ausgeführten Schließkörper (26)umschließt, so dass die Gehäuseinnenwand für diesen eine Zylinderfläche (27) bildet, wobei zwischen beiden eine den Schließdruck bestimmende Ventilfeder (28) eingeschlossen ist.Machine according to claim 2, characterized in that the valve housing (25) cup-shaped and telescopically designed as a hollow piston closing body (26) surrounds, so that the housing inner wall for this a cylindrical surface (27), wherein between the two a closing pressure-determining valve spring (28 ) is included. Maschine nach Anspruch 1, dadurch gekennzeichnet, dass zwei außenachsig zueinander angeordnete Drehkolben (2,3) in dem Fördergehäuse (4) eingeschlossen sind und sich ihre durch die Zwischenwand (6) hindurch erstreckenden Antriebswellen (20,21) mit in dem Getriebegehäuse (11) eingeschlossenen, miteinander kämmenden Zahnrädern (23,24) verbunden sind, so dass diese Zahnräder (23,24) die Mittel zur Steuerung der Rotationskolbenbewegung bilden , wobei der an der Zwischenwand (6) vorgesehene Teil des Bypasskanals (17) sich quer zu einer die Antriebswellen (20,21) verbindenden Linie (22) erstreckt und das Ventilgehäuse (25) seitlich neben dem Zahnradpaar (23,24) sich in das Getriebegehäuse(11) hinein erstreckt.Machine according to Claim 1, characterized in that two rotary pistons (2, 3) arranged outside one another are enclosed in the conveyor housing (4) and their drive shafts (20, 21) extending through the intermediate wall (6) are connected to the transmission housing (11 ), so that these gears (23,24) form the means for controlling the rotation of the rotary piston, wherein the at the intermediate wall (6) provided part of the bypass channel (17) transversely to a the drive shafts (20,21) connecting line (22) extends and the valve housing (25) laterally adjacent to the gear pair (23,24) extends into the transmission housing (11). Maschine nach Anspruch 1, dadurch gekennzeichnet, dass mehrere Drehkolben (2,3) in dem Fördergehäuse (4) eingeschlossen sind und durch in dem Getriebegehäuse (11) eingeschlossene, miteinander kämmende Zahnrädern (23,24) gesteuert sind, welche die Mittel zur Steuerung der Rotationskolbenbewegung bilden, wobei jeweils einen Drehkolben (2,3) und ein Zahnrad (23,24) tragende Wellen (20,21) hohl ausgeführt sind.Machine according to Claim 1, characterized in that a plurality of rotary pistons (2, 3) are enclosed in the conveyor housing (4) and are controlled by intermeshing toothed wheels (23, 24) enclosed in the gearbox (11), which control means form the rotary piston movement, wherein in each case a rotary piston (2,3) and a gear (23,24) carrying shafts (20,21) are hollow. Maschine nach Anspruch 5, dadurch gekennzeichnet, dass eines von miteinander kämmenden Zahnrädern (23,24) aus Stahl und das andere aus einem Nichteisenmetall ausgeführt ist.Machine according to claim 5, characterized in that one of intermeshing gears (23,24) made of steel and the other is made of a non-ferrous metal. Maschine nach Anspruch 1, dadurch gekennzeichnet, dass der Bypasskanal (17) durch in einer der Seitenwände (6) des Fördergehäuses vorgesehene Öffnungen (15,16) und einen entlang der Seitenwand (6) geführten Kanal (17) gebildet ist, derart, dass ein Teil des Bypasskanals (17) auf einer Seite durch einen Wandbereich der Seitenwand (6) des Fördergehäuses und auf der gegenüberliegenden Seite durch einen Kanaldeckel (19) begrenzt ist.Machine according to Claim 1, characterized in that the bypass channel (17) is formed by openings (15, 16) provided in one of the side walls (6) of the conveyor housing and a channel (17) guided along the side wall (6), such that a part of the bypass channel (17) on one side by a wall portion of the side wall (6) of the conveyor housing and on the opposite side by a manhole cover (19) is limited.
EP08007258.0A 2007-06-14 2008-04-12 Rotary piston machine Withdrawn EP2003339A3 (en)

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DE102007027318A DE102007027318A1 (en) 2007-06-14 2007-06-14 Rotary piston engine

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EP2003339A3 (en) 2014-06-11
JP2008309155A (en) 2008-12-25
DE102007027318A1 (en) 2008-12-18
US20080310987A1 (en) 2008-12-18

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