EP0818605A2 - Kreiskolbenmaschine - Google Patents
Kreiskolbenmaschine Download PDFInfo
- Publication number
- EP0818605A2 EP0818605A2 EP97110513A EP97110513A EP0818605A2 EP 0818605 A2 EP0818605 A2 EP 0818605A2 EP 97110513 A EP97110513 A EP 97110513A EP 97110513 A EP97110513 A EP 97110513A EP 0818605 A2 EP0818605 A2 EP 0818605A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotary piston
- chamber
- piston machine
- machine according
- slide
- 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.)
- Granted
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Classifications
-
- 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 present.
- Such a rotary piston machine designed as a rotary piston pump is known from DE 29 14 527 C2.
- 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 lateral 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 will. Accordingly, there is a high tightness between Admission and delivery 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. Because 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.
- a flat counter surface 16a for forms the flat sealing surface 16b of a slide 17.
- 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 9 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 29.
- the rotary piston machine according to Figures 4 and 5 can 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 disclosure content is hereby expressly included.
- 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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
- 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.
Claims (9)
- Kreiskolbenmaschine mit einem Gehäuse, in dem eine zylindrische Kammer (11) ausgebildet ist, einem Kreiskolben (12), der auf einer in der Längsachse (L) der Kammer (11) verlaufenden Welle (14) drehbar exzentrisch gelagert ist, einem im Gehäuse gelagerten, im wesentlichen in einer die Längsachse (L) einschließenden Ebene hin und her bewegbaren Schieber (17), der mit einer Dichtfläche (16b) auf der Mantelfläche des Kreiskolbens (12) kraftbeaufschlagt aufliegt und den Raum zwischen innerer Umfangsfläche der Kammer (11) und Mantelfläche des Kreiskolbens (12) in eine Aufnahme- und eine Abgabekammer (11a bzw. 11b) dichtend teilt, und mit einem Zuführkanal (24, 27) bzw. einem Auslaßkanal (25, 29) zum Zuführen von Medium zur Aufnahmekammer (11a) bzw. zum Abführen des Mediums aus der Abgabekammer (11b), wenn bei Drehung der Welle (14) die Mantelfläche des Kreiskolbens an der zylindrischen Umfangsfläche der Kammer (11) anliegt, dadurch gekennzeichnet, daß die Dichtfläche (16b) am Schieber (17) eine plane Fläche ist, die an einer planen Gegenfläche (16a) gleitend anliegt, welche an der Mantelfläche des Kreiskolbens (12) ausgebildet ist.
- Kreiskolbenmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Dichtfläche (16b) und die Gegenfläche (16a) im wesentlichen senkrecht zur Längsachse (L) angeordnet sind.
- Kreiskolbenmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Dichtfläche (16b) und die Gegenfläche (16a) gleich groß und rechteckförmig oder quadratisch sind, daß die Breite der Rechteckform gleich der Breite des Kreiskolbens (12) ist, und daß die Länge der Rechteckform im Bereich von 1/10 bis 5/10 des Durchmessers des Kreiskolbens (12) liegt, mindestens jedoch 5 mm beträgt.
- Kreiskolbenmaschine nach Anspruch 3, dadurch gekennzeichnet, daß die Länge der Rechteckform das 0,2 bis 0,35-Fache des Durchmessers des Kreiskolbens (12) beträgt.
- Kreiskolbenmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Schieber (17) mit einer vorbestimmten Kraft, vorzugsweise durch eine Feder, einen pneumatisch oder einen hydraulisch arbeitenden Tauchkolben, gegen die Gegenfläche (16a) des Kreiskolbens (12) gedrückt wird.
- Kreiskolbenmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Schieber (17) und der Kreiskolben (12) ein Kanalsystem (18) enthält, durch das Gleitflächen der Kreiskolbenmaschine mit Schmiermittel versorgt werden.
- Kreiskolbenmaschine nach Anspruch 6, dadurch gekennzeichnet, daß der Kreiskolben eine von der Gegenfläche (16a) bis zur Kurbeloberfläche und/oder zu den Seitenflächen der Kammer (11) verlaufende Bohrungen enthält, durch die die Gleitflächen mit Schmiermittel versorgt wird.
- Kreiskolbenmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die innere Umfangsfläche der Kammer (11) und/oder die seitlichen Flächen der zylindrischen Kammer mindestens in dem Bereich, der mit dem Kreiskolbenmantel in Kontakt steht, poliert und/oder mit einer verschleißarmen Schicht beschichtet ist, vorzugsweise durch ein Plasma-CVD-Verfahren mit modifiziertem superharten Kohlenstoff beschichtet ist.
- Kreiskolbenmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zumindest eines der folgenden Teile, nämlich die mittlere Platte (10), die seitlichen Platten (22, 23), der Schieber (17), der Kreiskolben (12), die Kurbel (13) sowie die Welle (14), oder sämtliche genannten Teile aus Keramik, vorzugsweise aus Aluminiumoxid, Siliziumkarbid oder Siliziumnitrid gefertigt sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19627501 | 1996-07-08 | ||
DE19627501A DE19627501A1 (de) | 1996-07-08 | 1996-07-08 | Kreiskolbenmaschine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0818605A2 true EP0818605A2 (de) | 1998-01-14 |
EP0818605A3 EP0818605A3 (de) | 1998-09-09 |
EP0818605B1 EP0818605B1 (de) | 2002-05-08 |
Family
ID=7799257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97110513A Expired - Lifetime EP0818605B1 (de) | 1996-07-08 | 1997-06-26 | Kreiskolbenmaschine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0818605B1 (de) |
AT (1) | ATE217387T1 (de) |
DE (2) | DE19627501A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009047153A1 (de) * | 2009-11-25 | 2011-05-26 | Sgl Carbon Se | Pumpe mit oder aus einem C/SiC-Material und Verwendung von C/SiC-Materialien bei Pumpen |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB632414A (en) * | 1947-08-27 | 1949-11-28 | Charles Scott Prendergast | Improvements relating to rotary pumps and motors |
DE815371C (de) * | 1949-03-29 | 1951-10-01 | Hugo Heinrich | Rollkolbenmaschine mit sichelfoermigem Arbeitsraum |
US2635553A (en) * | 1947-07-18 | 1953-04-21 | Economy Faucet Company | Liquid pump |
DE1628125A1 (de) * | 1967-02-22 | 1970-08-20 | Willy Minnich | OEldruckmotor |
US4280798A (en) * | 1979-01-24 | 1981-07-28 | Gurley James R | Work machine |
-
1996
- 1996-07-08 DE DE19627501A patent/DE19627501A1/de not_active Withdrawn
-
1997
- 1997-06-26 EP EP97110513A patent/EP0818605B1/de not_active Expired - Lifetime
- 1997-06-26 AT AT97110513T patent/ATE217387T1/de not_active IP Right Cessation
- 1997-06-26 DE DE59707193T patent/DE59707193D1/de not_active Expired - Lifetime
Patent Citations (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 (de) * | 1949-03-29 | 1951-10-01 | Hugo Heinrich | Rollkolbenmaschine mit sichelfoermigem Arbeitsraum |
DE1628125A1 (de) * | 1967-02-22 | 1970-08-20 | Willy Minnich | OEldruckmotor |
US4280798A (en) * | 1979-01-24 | 1981-07-28 | Gurley James R | Work machine |
Non-Patent Citations (1)
Title |
---|
FELIX WANKEL: "Einteilung der Rotationskolbenmaschinen" 1963 , DEUTSCHE VERLAGS-ANSTALT , STUTTGART XP002070841 * Tabelle 10 * Kreiseingriff und Hubeingriff - aussenachsige Bauarten * Spalte 11-14, Zeile VII * * |
Also Published As
Publication number | Publication date |
---|---|
DE19627501A1 (de) | 1998-01-15 |
EP0818605B1 (de) | 2002-05-08 |
EP0818605A3 (de) | 1998-09-09 |
ATE217387T1 (de) | 2002-05-15 |
DE59707193D1 (de) | 2002-06-13 |
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