EP0818605B1 - Rotary engine - Google Patents
Rotary engine Download PDFInfo
- Publication number
- EP0818605B1 EP0818605B1 EP97110513A EP97110513A EP0818605B1 EP 0818605 B1 EP0818605 B1 EP 0818605B1 EP 97110513 A EP97110513 A EP 97110513A EP 97110513 A EP97110513 A EP 97110513A EP 0818605 B1 EP0818605 B1 EP 0818605B1
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- EP
- European Patent Office
- Prior art keywords
- rotary piston
- chamber
- slide
- engine according
- piston engine
- 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
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- 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
- F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
- F01C1/356—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
- F01C1/3562—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
Definitions
- the invention relates to a rotary piston machine with a housing, in which a cylindrical chamber is formed, one Circular piston, which on a in the longitudinal axis of the chamber Shaft is rotatably mounted eccentrically, one in Housing mounted, essentially in a the longitudinal axis enclosing plane reciprocating slide, the with a sealing surface on the outer surface of the rotary piston pressurized rests and the space between the inner peripheral surface the chamber and lateral surface of the rotary piston in sealingly divides a receiving and a dispensing chamber, and with a supply channel or an outlet channel for supplying medium to the receiving chamber or to discharge the medium from the Dispensing chamber if the lateral surface of the Rotary piston on the cylindrical peripheral surface of the chamber is applied.
- Such a rotary piston machine designed as a rotary piston pump is known from DE 29 14 527 C2.
- the Slider of the known rotary piston machine is in pressure contact with the outer surface of the rotary piston and touches it with an elongated surface which is a generatrix of the Rotary piston contains. Because of the eccentricity of the rotary piston arises between the outer surface of the rotary piston and the contact surface of the slide has a relative movement, when the rotary piston rolls over this contact surface. This creates wear on the sealing surface of the slide and on the jacket of the rotary piston, which seals between Admission and delivery chamber impaired. It also arises due to the linear contact surface between the slide and lateral surface of the rotary piston a high surface pressure, the further increases wear.
- a rotary piston machine is known from DE 44 18 262 A1, where the slide as an additional part is a sealing element contains which is pivotable in a recess of the slide is stored.
- the sealing element has a sealing surface on the circumferential surface of the rotary piston rests.
- the input or output shaft of the rotary piston rolls the outer surface of the rotary piston on the cylindrical peripheral surface the chamber. Accordingly, there is also a relative movement between the sealing surface of the sealing element and the circumferential surface of the rotary piston.
- the rolling friction between the inner peripheral surface of the chamber and the outer surface of the Rotary piston and between the latter and the sealing surface of the Sealing element leads to wear, which is the serviceability the rotary piston machine is reduced.
- This task is for the rotary piston machine mentioned at the beginning solved in that the sealing surface on the slide a is a flat surface that slides on a flat counter surface abuts, which is formed on the outer surface of the rotary piston is.
- the flat sealing surface and the flat counter surface can by conventional machine tools manufactured with the highest precision become. Accordingly, there is a high tightness between Admission and distribution chamber. Because the two plan areas if they are loaded with one another, they will roll the circumferential surface of the rotary piston on the cylindrical peripheral surface the chamber prevented. Rather, the outer surface of the rotary piston when the shaft rotates against the peripheral surface pressed the chamber, corresponding to each other Locations of the peripheral surface and the outer surface at every turn of the shaft approach each other, then in contact get and move away from each other. Also there is a rolling movement between the sealing surface and the counter surface avoided. So there is wear due to rolling friction significantly reduced in the chamber and on the slide and thus the efficiency of the rotary piston machine and its reliability improved.
- the sealing surface of the slide is located on the counter surface of the rotary piston facing her, whereby there is a large contact area. Based on these large contact area is also with high force application generates only a low surface pressure, which creates a high Tightness is achieved at high pressures and yet the Wear is low.
- the rotary piston machine according to the invention can be used as a pump, Compressor or used as a drive motor. by virtue of the reduced load on the sealing surface of the slide can the working pressures and also the working temperatures be high without fear of high wear. Also the rotary piston machine can improve the tightness have high torques at low speeds.
- Figures 1, 2 and 3 show a rotary piston machine according to of the invention, which works as a drive motor.
- Figure 1 shows the rotary piston machine in a view from direction A according Figure 2 seen.
- the rotary piston machine has a medium one Plate 10 with a circular opening, the chamber 11th forms.
- a rotary piston 12 In the chamber 11 is a rotary piston 12 on an eccentric Crank 13 rotatably supported by a shaft 14.
- the rotary piston 12, the side against side plates 22 and 23 lies sealingly, has on its outer surface a flat, which a flat counter surface 16a for forms the flat sealing surface 16b of a slide 17.
- the Slider 17 is slidable in a recess 21 of the plate 10 and stored sealed.
- the slide 17 also has a recess 19, which acts as an inlet valve for the working media serves in the chamber 11.
- the plate 10 also has one Feed channel 24 and an outlet channel 25. Via the feed channel 24, the working medium is supplied to the chamber 11 and after delivering its energy content to work through the outlet duct 25 removed again.
- Figure 2 shows a cross section along the line B-B of Figure 1.
- the slide 17, the rotary piston 12 and the shaft 14 contain a channel system 18 which lubricant 26 on distributed several sliding surfaces.
- a supply of lubricant 26 is arranged above the slide 17 and is gas pressure P applied.
- Figure 3 shows a cross section along the line C-C of Figure 1. It is the structure of the feed channel 24, the recess 19 in the slide 17 and its function as a valve and the outlet channel 25 visible.
- the feed channel 24 serves as Combustion chamber, whereby compressed air is supplied from the outside.
- the resulting in the combustion in the combustion chamber 24 Expansion gases are via the recess acting as a valve 19 and with the corresponding position of the slide 17 in the work area the chamber 11 passed. Relax these expansion gases themselves and indicate their energy content as filming the rotary piston 12.
- Figure 4 shows the rotary piston machine according to the invention as Compressor.
- the same parts as in the previous figures are called the same.
- the view shown in Figure 4 corresponds from view A according to FIG. 2.
- the rotary piston machine as The compressor is similar to the rotary piston machine described in FIG. 1 as a drive motor. Deviations are that the direction of rotation according to arrow P2 opposite the direction of rotation according to arrow P1.
- the rotary piston machine as a compressor has a feed channel 27 and a discharge channel 29 for the condensed medium.
- the discharge channel 29 contains a valve V1, the structure of which is mentioned in the already mentioned patent application DE 195 17 451 is described in detail.
- Another difference relates to the slide 17, which has no recess 19 contains, since such a valve is not required.
- FIG. 4 shows the rotary piston machine in a rotating phase of 270 °.
- the receiving chamber 11a Medium flowed in via the feed channel 27, while the in a medium previously flowed in the dispensing chamber 11b has been compressed. If the medium is overpressured in the discharge chamber 11b with respect to the pressure in the discharge channel 29 opens valve V1 so that the medium flows out.
- the state of the rotary piston 12 is the eccentricity E in with respect to the longitudinal axis L.
- FIG. 5 shows the rotary piston machine according to FIG. 4 in cross section along the line D-D.
- the feed channel is clearly visible 27, the slide 17, the outlet valve V1 and the outlet channel 29th
- the rotary piston machine according to Figures 4 and 5 5 can be as Compressors for the drive motor according to FIG. 1 are used, the combustion chamber air flowing in the outlet duct 28 24 of the drive motor is supplied.
- the rotary piston machine described can be in a rotary piston device used, essentially two contains similar rotary piston machines.
- the work phases of the two rotary piston machines are 180 ° against each other postponed.
- Such a rotary piston device is in the DE 195 17 451 described in detail.
- the Rotary piston machine according to the present invention also in two-stage arrangements are used, as well as these in the aforementioned patent application by the same applicant of the present invention.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Hydraulic Motors (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Reciprocating Pumps (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
Die Erfindung betrifft eine Kreiskolbenmaschine mit einem Gehäuse, in dem eine zylindrische Kammer ausgebildet ist, einem Kreiskolben, der auf einer in der Längsachse der Kammer verlaufenden Welle drehbar exzentrisch gelagert ist, einem im Gehäuse gelagerten, im wesentlichen in einer die Längsachse einschließenden Ebene hin und her bewegbaren Schieber, der mit einer Dichtfläche auf der Mantelfläche des Kreiskolbens kraftbeaufschlagt aufliegt und den Raum zwischen innerer Umfangsfläche der Kammer und Mantelfläche des Kreiskolbens in eine Aufnahme- und eine Abgabekammer dichtend teilt, und mit einem Zuführkanal bzw. einem Auslaßkanal zum Zuführen von Medium zur Aufnahmekammer bzw. zum Abführen des Mediums aus der Abgabekammer, wenn bei Drehung der Welle die Mantelfläche des Kreiskolbens an der zylindrischen Umfangsfläche der Kammer anliegt. The invention relates to a rotary piston machine with a housing, in which a cylindrical chamber is formed, one Circular piston, which on a in the longitudinal axis of the chamber Shaft is rotatably mounted eccentrically, one in Housing mounted, essentially in a the longitudinal axis enclosing plane reciprocating slide, the with a sealing surface on the outer surface of the rotary piston pressurized rests and the space between the inner peripheral surface the chamber and lateral surface of the rotary piston in sealingly divides a receiving and a dispensing chamber, and with a supply channel or an outlet channel for supplying medium to the receiving chamber or to discharge the medium from the Dispensing chamber if the lateral surface of the Rotary piston on the cylindrical peripheral surface of the chamber is applied.
Eine derartige als Rotationskolbenpumpe ausgebildete Kreiskolbenmaschine ist aus der DE 29 14 527 C2 bekannt. Der Schieber der bekannten Kreiskolbenmaschine steht in Druckkontakt mit der Mantelfläche des Kreiskolbens und berührt diesen mit einer langgestreckten Fläche, die eine Mantellinie des Kreiskolbens enthält. Aufgrund der Exzentrizität des Kreiskolbens entsteht zwischen der Mantelfläche des Kreiskolbens und der Auflagefläche des Schiebers eine Relativbewegung, wenn der Kreiskolben über diese Auflagefläche hinweg abrollt. Somit entsteht Verschleiß an der Dichtfläche des Schiebers und am Mantel des Kreiskolbens, der die Abdichtung zwischen Aufnahme- und Abgabekammer beeinträchtigt. Außerdem entsteht aufgrund der linienhaften Berührungsfläche zwischen Schieber und Mantelfläche des Kreiskolbens ein hoher Flächendruck, der den Verschleiß weiter erhöht.Such a rotary piston machine designed as a rotary piston pump is known from DE 29 14 527 C2. The Slider of the known rotary piston machine is in pressure contact with the outer surface of the rotary piston and touches it with an elongated surface which is a generatrix of the Rotary piston contains. Because of the eccentricity of the rotary piston arises between the outer surface of the rotary piston and the contact surface of the slide has a relative movement, when the rotary piston rolls over this contact surface. This creates wear on the sealing surface of the slide and on the jacket of the rotary piston, which seals between Admission and delivery chamber impaired. It also arises due to the linear contact surface between the slide and lateral surface of the rotary piston a high surface pressure, the further increases wear.
Aus der DE 44 18 262 A1 ist eine Kreiskolbenmaschine bekannt, bei der der Schieber als zusätzliches Teil ein Dichtelement enthält, welches in einer Ausnehmung des Schiebers schwenkbar gelagert ist. Das Dichtelement hat eine Dichtfläche, die auf der Mantelfläche des Kreiskolbens aufliegt. Bei Drehung der Antriebs- oder Abtriebswelle des Kreiskolbens rollt die Mantelfläche des Kreiskolbens auf der zylindrischen Umfangsfläche der Kammer ab. Dementsprechend ergibt sich auch eine Relativbewegung zwischen der Dichtfläche des Dichtelements und der Mantelfläche des Kreiskolbens. Die Rollreibung zwischen der inneren Umfangsfläche der Kammer und der Mantelfläche des Kreiskolbens sowie zwischen letzterer und der Dichtfläche des Dichtelements führt zu einem Verschleiß, der die Betriebstüchtigkeit der Kreiskolbenmaschine verringert.A rotary piston machine is known from DE 44 18 262 A1, where the slide as an additional part is a sealing element contains which is pivotable in a recess of the slide is stored. The sealing element has a sealing surface on the circumferential surface of the rotary piston rests. When the The input or output shaft of the rotary piston rolls the outer surface of the rotary piston on the cylindrical peripheral surface the chamber. Accordingly, there is also a relative movement between the sealing surface of the sealing element and the circumferential surface of the rotary piston. The rolling friction between the inner peripheral surface of the chamber and the outer surface of the Rotary piston and between the latter and the sealing surface of the Sealing element leads to wear, which is the serviceability the rotary piston machine is reduced.
Ferner ist aus der DE 195 17 451 desselben Anmelders der vorliegenden Erfindung eine Kreiskolbenmaschine bekannt, bei der die Dichtfläche am Schieber in einer im Kreiskolben an seiner Mantelfläche parallel zur Längsachse der Kammer ausgebildeten Ausnehmung gleitend gelagert ist. Die Ausnehmung hat eine mit der Dichtfläche zusammenwirkende Gegenfläche, die an die Kurvenform der Dichtfläche angepaßt ist. Es hat sich nun gezeigt, daß es relativ aufwendig ist, die Ausnehmung im Kreiskolben und die Kurvenform der Dichtfläche mit hoher Präzision zu fertigen, um eine hohe Dichtheit zu gewährleisten. Um jedoch einen hohen Wirkungsgrad der Kreiskolbenmaschine auch im niedrigen Drehzahlbereich zu erreichen, ist eine hohe Dichtheit des Arbeitsraumes erforderlich.Furthermore, from DE 195 17 451 the same applicant is the present Invention a rotary piston machine known in the the sealing surface on the slide in a rotary piston on his Shell surface formed parallel to the longitudinal axis of the chamber Recess is slidably mounted. The recess has one with the mating surface interacting with the curve shape the sealing surface is adapted. It has now been shown that it is relatively expensive, the recess in the rotary piston and the curve shape of the sealing surface with high precision to ensure a high level of tightness. However, to a high efficiency of the rotary piston machine also in Reaching a low speed range is a high one Tightness of the work area required.
Es ist Aufgabe der Erfindung, eine Kreiskolbenmaschine anzugeben, die eine hohe Dichtheit zwischen Aufnahmekammer und Abgabekammer gewährleistet und die einen geringen Verschleiß hat.It is an object of the invention to provide a rotary piston machine a high tightness between the receiving chamber and Dispensing chamber ensures and low wear Has.
Diese Aufgabe wird für die eingangs genannte Kreiskolbenmaschine dadurch gelöst, daß die Dichtfläche am Schieber eine plane Fläche ist, die an einer planen Gegenfläche gleitend anliegt, welche an der Mantelfläche des Kreiskolbens ausgebildet ist.This task is for the rotary piston machine mentioned at the beginning solved in that the sealing surface on the slide a is a flat surface that slides on a flat counter surface abuts, which is formed on the outer surface of the rotary piston is.
Die plane Dichtfläche und die plane Gegenfläche können durch herkömmliche Werkzeugmaschinen mit höchster Präzision hergestellt werden. Demgemäß ergibt sich eine hohe Dichtheit zwischen Aufnahme- und Abgabekammer. Da die beiden planen Flächen kraftbeaufschlagt aufeinander liegen, wird ein Abrollen der Mantelfläche des Kreiskolbens auf der zylindrischen Umfangsfläche der Kammer verhindert. Vielmehr wird die Mantelfläche des Kreiskolbens bei Drehung der Welle gegen die Umfangsfläche der Kammer gedrückt, wobei einander korrespondierende Ortspunkte der Umfangsfläche und der Mantelfläche bei jeder Umdrehung der Welle sich einander nähern, dann in Kontakt gelangen und sich wieder voneinander entfernen. Auch zwischen Dichtfläche und Gegenfläche wird eine Abrollbewegung vermieden. Es wird also der Verschleiß aufgrund von Rollreibung in der Kammer sowie am Schieber deutlich verringert und damit der Wirkungsgrad der Kreiskolbenmaschine und seine Zuverlässigkeit verbessert. Die Dichtfläche des Schiebers liegt auf der ihr zugewandten Gegenfläche des Kreiskolbens an, wobei sich eine große Berührungsfläche ergibt. Aufgrund dieser großen Berührungsfläche wird auch bei hoher Kraftbeaufschlagung nur ein geringer Flächendruck erzeugt, wodurch eine hohe Dichtheit bei hohen Drücken erreicht wird und dennoch der Verschleiß gering ist.The flat sealing surface and the flat counter surface can by conventional machine tools manufactured with the highest precision become. Accordingly, there is a high tightness between Admission and distribution chamber. Because the two plan areas if they are loaded with one another, they will roll the circumferential surface of the rotary piston on the cylindrical peripheral surface the chamber prevented. Rather, the outer surface of the rotary piston when the shaft rotates against the peripheral surface pressed the chamber, corresponding to each other Locations of the peripheral surface and the outer surface at every turn of the shaft approach each other, then in contact get and move away from each other. Also there is a rolling movement between the sealing surface and the counter surface avoided. So there is wear due to rolling friction significantly reduced in the chamber and on the slide and thus the efficiency of the rotary piston machine and its reliability improved. The sealing surface of the slide is located on the counter surface of the rotary piston facing her, whereby there is a large contact area. Based on these large contact area is also with high force application generates only a low surface pressure, which creates a high Tightness is achieved at high pressures and yet the Wear is low.
Die Kreiskolbenmaschine nach der Erfindung kann als Pumpe, Verdichter oder als Antriebsmotor verwendet werden. Aufgrund der verringerten Belastung an der Dichtfläche des Schiebers können die Arbeitsdrücke und auch die Arbeitstemperaturen hoch sein, ohne daß hoher Verschleiß zu befürchten ist. Auch kann die Kreiskolbenmaschine durch die verbesserte Dichtheit bei niedrigen Drehzahlen hohe Drehmomente haben.The rotary piston machine according to the invention can be used as a pump, Compressor or used as a drive motor. by virtue of the reduced load on the sealing surface of the slide can the working pressures and also the working temperatures be high without fear of high wear. Also the rotary piston machine can improve the tightness have high torques at low speeds.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen erläutert. Darin zeigt:
- Figur 1
- eine Kreiskolbenmaschine, die als Antriebsmotor arbeitet, wobei der Schieber als Ventil für den Einlaß der Expansionsgase in den Arbeitsraum dient,
- Figur 2
- die Kreiskolbenmaschine nach Figur 1 in Schnittdarstellung gemäß der Linie B-B,
- Figur 3
- die Kreiskolbenmaschine nach Figur 1 in einer Schnittdarstellung längs der Linien C-C,
- Figur 4
- eine Kreiskolbenmaschine ähnlich der Figur 1, die jedoch als Verdichter arbeitet, und
- Figur 5
- die als Verdichter arbeitende Kreiskolbenmaschine nach Figur 4 in Schnittdarstellung längs der Linie D-D.
- Figure 1
- a rotary piston machine which works as a drive motor, the slide serving as a valve for the inlet of the expansion gases into the working space,
- Figure 2
- 1 in a sectional view along the line BB,
- Figure 3
- 1 in a sectional representation along the lines CC,
- Figure 4
- a rotary piston machine similar to Figure 1, but which works as a compressor, and
- Figure 5
- the rotary piston machine working as a compressor according to Figure 4 in a sectional view along the line DD.
Die Figuren 1, 2 und 3 zeigen eine Kreiskolbenmaschine nach
der Erfindung, die als Antriebsmotor arbeitet. Figur 1 zeigt
die Kreiskolbenmaschine in einer Ansicht aus Richtung A gemäß
Figur 2 gesehen. Die Kreiskolbenmaschine hat eine mittlere
Platte 10 mit einem kreisrunden Durchbruch, der die Kammer 11
bildet. In der Kammer 11 ist ein Kreiskolben 12 auf einer exzentrischen
Kurbel 13 mit einer Welle 14 drehbar gelagert.
Der Kreiskolben 12, der seitlich gegen Seitenplatten 22 und
23 (vgl. Figur 2) dichtend anliegt, hat an seiner Mantelfläche
eine Abflachung, welche eine plane Gegenfläche 16a für
die plane Dichtfläche 16b eines Schiebers 17 bildet. Der
Schieber 17 ist in einer Ausnehmung 21 der Platte 10 verschiebbar
und dichtend gelagert. Der Schieber 17 hat ferner
eine Aussparung 19, welche als Einlaßventil für die Arbeitsmedien
in der Kammer 11 dient. Die Platte 10 hat ferner einen
Zuführkanal 24 sowie einen Auslaßkanal 25. Über den Zuführkanal
24 wird das Arbeitsmedium der Kammer 11 zugeführt und
nach Abgabe seines Energieinhaltes der Arbeit über den Auslaßkanal
25 wieder abgeführt.Figures 1, 2 and 3 show a rotary piston machine according to
of the invention, which works as a drive motor. Figure 1 shows
the rotary piston machine in a view from direction A according
Figure 2 seen. The rotary piston machine has a medium one
Figur 2 zeigt einen Querschnitt längs der Linie B-B nach Figur
1. Der Schieber 17, der Kreiskolben 12 und die Welle 14
enthalten ein Kanalsystem 18, welches Schmiermittel 26 an
mehrere Gleitflächen verteilt. Ein Vorrat an Schmiermittel 26
ist oberhalb des Schiebers 17 angeordnet und wird mit Gasdruck
P beaufschlagt.Figure 2 shows a cross section along the line B-B of Figure
1. The
Figur 3 zeigt einen Querschnitt längs der Linie C-C nach Figur
1. Es wird der Aufbau des Zuführkanals 24, der Ausnehmung
19 im Schieber 17 und ihre Funktion als Ventil sowie der Auslaßkanal
25 sichtbar.Figure 3 shows a cross section along the line C-C of Figure
1. It is the structure of the
Bei der Anwendung der Kreiskolbenmaschine als Wärmekraftmaschine,
d.h. als Antriebsmotor, dient der Zuführkanal 24 als
Brennkammer, wobei verdichtete Luft von außen zugeführt wird.
Die bei der Verbrennung in der Brennkammer 24 entstehenden
Expansionsgase werden über die als Ventil wirkende Ausnehmung
19 und bei entsprechender Stellung des Schiebers 17 in den Arbeitsraum
der Kammer 11 geleitet. Diese Expansionsgase entspannen
sich und geben ihren Energieinhalt als Dreharbeit an
den Kreiskolben 12 ab.When using the rotary piston machine as a heat engine,
i.e. as the drive motor, the
Figur 4 zeigt die erfindungsgemäße Kreiskolbenmaschine als
Verdichter. Gleiche Teile wie bei den bisherigen Figuren sind
gleich bezeichnet. Die in Figur 4 gezeigte Ansicht entspricht
der aus Sicht A gemäß Figur 2. Die Kreiskolbenmaschine als
Verdichter ist ähnlich der nach Figur 1 beschriebenen Kreiskolbenmaschine
als Antriebsmotor. Abweichungen liegen darin,
daß die Drehrichtung gemäß Pfeil P2 entgegengesetzt der Drehrichtung
nach Pfeil P1 ist. Die Kreiskolbenmaschine als Verdichter
hat einen Zuführkanal 27 und einen Abgabekanal 29 für
das verdichtete Medium. Der Abgabekanal 29 enthält ein Ventil
V1, dessen Aufbau in der bereits erwähnten Patentanmeldung DE
195 17 451 ausführlich beschrieben ist. Ein weiterer Unterschied
betrifft den Schieber 17, welcher keine Aussparung 19
enthält, da ein derartiges Ventil nicht benötigt wird.Figure 4 shows the rotary piston machine according to the invention as
Compressor. The same parts as in the previous figures are
called the same. The view shown in Figure 4 corresponds
from view A according to FIG. 2. The rotary piston machine as
The compressor is similar to the rotary piston machine described in FIG. 1
as a drive motor. Deviations are
that the direction of rotation according to arrow P2 opposite the direction of rotation
according to arrow P1. The rotary piston machine as a compressor
has a
Die Figur 4 zeigt die Kreiskolbenmaschine in einer Drehphase
von 270°. In diesem Zustand ist in die Aufnahmekammer 11a
über den Zuführkanal 27 Medium eingeströmt, während das in
einem Arbeitstakt zuvor eingeströmte Medium in der Abgabekammer
11b verdichtet worden ist. Bei Überdruck des Mediums in
der Abgabekammer 11b in bezug auf den Druck im Abgabekanal 29
öffnet das Ventil V1, so daß das Medium abströmt. Im gezeigten
Zustand des Kreiskolbens 12 ist die Exzentrizität E in
bezug zur Längsachse L zu erkennen.FIG. 4 shows the rotary piston machine in a rotating phase
of 270 °. In this state, the receiving
Figur 5 zeigt die Kreiskolbenmaschine nach Figur 4 im Querschnitt
längs der Linie D-D. Gut zu erkennen ist der Zuführkanal
27, der Schieber 17, das Auslaßventil V1 und der Auslaßkanal
29.FIG. 5 shows the rotary piston machine according to FIG. 4 in cross section
along the line D-D. The feed channel is clearly visible
27, the
Die Kreiskolbenmaschine nach den Figuren 4 und 5 5 kann als Verdichter für den Antriebsmotor nach Figur 1 verwendet werden, wobei die im Auslaßkanal 28 strömende Luft der Brennkammer 24 des Antriebsmotors zugeführt wird. The rotary piston machine according to Figures 4 and 5 5 can be as Compressors for the drive motor according to FIG. 1 are used, the combustion chamber air flowing in the outlet duct 28 24 of the drive motor is supplied.
Die beschriebene Kreiskolbenmaschine kann in einer Kreiskolbeneinrichtung verwendet werden, die im wesentlichen zwei gleichartige Kreiskolbenmaschinen enthält. Hierbei werden zwei Kreiskolbenmaschinen auf einer einzigen Platte in einer Ebene liegend angeordnet, wobei zwei Schieber miteinander mechanisch gekoppelt sind oder nur ein einziger Schieber für beide Kreiskolbenmaschinen verwendet wird. Die Arbeitsphasen der beiden Kreiskolbenmaschinen sind um 180° gegeneinander verschoben. Eine derartige Kreiskolbeneinrichtung ist in der DE 195 17 451 ausführlich beschrieben. Außerdem kann die Kreiskolbenmaschine nach der vorliegenden Erfindung auch in zweistufigen Anordnungen eingesetzt werden, wie diese ebenfalls in der erwähnten Patentanmeldung desselben Anmelders der vorliegenden Erfindung beschrieben sind.The rotary piston machine described can be in a rotary piston device used, essentially two contains similar rotary piston machines. Here are two rotary piston machines on a single plate in one Arranged horizontally, two slides mechanically with each other are coupled or only a single slider for both rotary piston machines is used. The work phases of the two rotary piston machines are 180 ° against each other postponed. Such a rotary piston device is in the DE 195 17 451 described in detail. In addition, the Rotary piston machine according to the present invention also in two-stage arrangements are used, as well as these in the aforementioned patent application by the same applicant of the present invention.
Claims (9)
- A rotary piston engine with a housing in which a cylindrical chamber (11) is formed, with a rotary piston (12) which is mounted eccentrically to rotate on a shaft (14) extending along the longitudinal axis (L) of the chamber (11), with a slide (17) mounted in the housing and adapted to reciprocate substantially in a plane enclosing the longitudinal axis (L), said slide bearing, with the application of a force, by a sealing surface (16b) on to the outer surface of the rotary piston (12) and sealingly dividing the space between the inner peripheral surface of the chamber (11) and the outer surface of the rotary piston (12) into a receiving chamber and a delivery chamber (11a and 11b respectively), and with a feed duct (24, 27) and an exhaust duct (25, 29) for feeding medium to the receiving chamber (11a) and for discharging medium from the delivery chamber (11b) when, on rotation of the shaft (14), the outer surface of the rotary piston bears against the cylindrical peripheral surface of the chamber (11), characterised in that the sealing surface (16b) on the slide (17) is a plane surface which bears slidingly against a plane co-acting surface (16a) formed on the outer surface of the rotary piston (12).
- A rotary piston engine according to claim 1, characterised in that the sealing surface (16b) and the co-acting surface (16a) are disposed substantially perpendicularly to the longitudinal axis of the slide.
- A rotary piston engine according to claim 1 or 2, characterised in that the sealing surface (16b) and the co-acting surface (16a) are of equal size and are rectangular or square, in that the width of the rectangular shape is equal to the width of the rotary piston (12), and in that the length of the rectangular shape is in the range from 1/10 to 5/10 of the diameter of the rotary piston (12), but is at least 5 mm.
- A rotary piston engine according to claim 3, characterised in that the length of the rectangular shape is 0.2 to 0.35 times the diameter of the rotary piston (12).
- A rotary piston engine according to any one of the preceding claims, characterised in that the slide (17) is pressed against the co-acting surface (16a) of the rotary piston (12) by a predetermined force, preferably by a spring, a pneumatic plunger, or a hydraulic plunger.
- A rotary piston engine according to any one of the preceding claims, characterised in that the slide (17) and the rotary piston (12) contain a duct system (18) by means of which sliding surfaces of the rotary piston engine are provided with lubricant.
- A rotary piston engine according to claim 6, characterised in that the rotary piston contains bores extending from the co-acting surface (16a) to the crank surface and/or to the side surfaces of the chamber (11), by means of which bores the sliding surfaces are provided with lubricant.
- A rotary piston engine according to any one of the preceding claims, characterised in that the inner peripheral surface of the chamber (11) and/or the lateral surfaces of the cylindrical chamber at least in the area in contact with the outer surface of the rotary piston, is polished and/or coated with a hard-wearing coating, preferably being coated with modified superhard carbon by a plasma-CVD process.
- A rotary piston engine according to any one of the preceding claims, characterised in that at least one of the following parts, i.e. the central plate (10), the side plates (22, 23), the slide (17), the rotary piston (12), the crank (13) and the shaft (14), or all the said parts, are made from ceramics, preferably from aluminium oxide, silicon carbide or silicon nitride.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19627501A DE19627501A1 (en) | 1996-07-08 | 1996-07-08 | Rotary piston machine |
| DE19627501 | 1996-07-08 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0818605A2 EP0818605A2 (en) | 1998-01-14 |
| EP0818605A3 EP0818605A3 (en) | 1998-09-09 |
| EP0818605B1 true EP0818605B1 (en) | 2002-05-08 |
Family
ID=7799257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97110513A Expired - Lifetime EP0818605B1 (en) | 1996-07-08 | 1997-06-26 | Rotary engine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0818605B1 (en) |
| AT (1) | ATE217387T1 (en) |
| DE (2) | DE19627501A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009047153A1 (en) * | 2009-11-25 | 2011-05-26 | Sgl Carbon Se | Pump i.e. rotary vane pump, for conveying e.g. fluid, has housing body and/or feeding body comprising region, which is provided for contact with fluid, formed with carbon fiber reinforced silicon carbide material |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2635553A (en) * | 1947-07-18 | 1953-04-21 | Economy Faucet Company | Liquid pump |
| GB632414A (en) * | 1947-08-27 | 1949-11-28 | Charles Scott Prendergast | Improvements relating to rotary pumps and motors |
| DE815371C (en) * | 1949-03-29 | 1951-10-01 | Hugo Heinrich | Rotary piston machine with sickle-shaped work area |
| DE1628125A1 (en) * | 1967-02-22 | 1970-08-20 | Willy Minnich | Oil pressure engine |
| US4280798A (en) * | 1979-01-24 | 1981-07-28 | Gurley James R | Work machine |
-
1996
- 1996-07-08 DE DE19627501A patent/DE19627501A1/en not_active Withdrawn
-
1997
- 1997-06-26 EP EP97110513A patent/EP0818605B1/en not_active Expired - Lifetime
- 1997-06-26 AT AT97110513T patent/ATE217387T1/en not_active IP Right Cessation
- 1997-06-26 DE DE59707193T patent/DE59707193D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE59707193D1 (en) | 2002-06-13 |
| EP0818605A3 (en) | 1998-09-09 |
| DE19627501A1 (en) | 1998-01-15 |
| EP0818605A2 (en) | 1998-01-14 |
| ATE217387T1 (en) | 2002-05-15 |
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