DE471989C - Side sealing of the piston drum of rotary piston machines, the front surfaces of which are separated from the side cylinder walls by a lubricant - Google Patents
Side sealing of the piston drum of rotary piston machines, the front surfaces of which are separated from the side cylinder walls by a lubricantInfo
- Publication number
- DE471989C DE471989C DED49505D DED0049505D DE471989C DE 471989 C DE471989 C DE 471989C DE D49505 D DED49505 D DE D49505D DE D0049505 D DED0049505 D DE D0049505D DE 471989 C DE471989 C DE 471989C
- Authority
- DE
- Germany
- Prior art keywords
- piston
- lubricant
- drum
- separated
- cylinder walls
- 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
Links
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
- F01C1/344—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 inner member
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
Seitenabdichtung der Kolbentrommel von Drehkolbenmaschinen, deren Stirnflächen von den seitlichen Zylinderwänden durch ein Schmiermittel getrennt sind Die Kolbentrommel von Drehkolbenmaschinen erfordert geringstes Spiel gegenüber den sie umgebenden, feststehenden Gehäuseteilen, um Undichtheiten möglichst klein zu halten. Da die Kolbentrommel sich meist mit verhältnismäßig hohen Umlaufgeschwindigkeiten dreht, zum Teil mannigfachen EinflÜssen, wie verschiedener Erwärmung, einseitig wirkenden axialen Kräften, nusgegetzt sind, so bereitet die Unschädlichmachung dieser Einflüsse erhebliche Schwierigkeiten. Besonders sind die Kolbentrommelstirnflächen diesen Einwirkungen ausgesetzt.Side seal of the piston drum of rotary piston machines, their End faces separated from the side cylinder walls by a lubricant The piston drum of rotary piston machines requires the least amount of play the surrounding, fixed housing parts to minimize leaks to keep. Since the piston drum is mostly at relatively high rotational speeds turns, partly due to various influences, such as different warming, one-sided acting axial forces are nut-opposed, so the rendering of them harmless prepares Influences considerable difficulties. The piston drum end faces are special exposed to these influences.
Man versuchte deshalb, die Stirnflächen mit Nuten zu versehen, die mit Schmieröl gespeist werden, das unter einem größeren Druck steht als .das Betriebsmittel der .Drehkolbenmaschine. Hierdurch soll einesteils die Reibung zwischen Kolbenstirnfläche und Zylinderdeckel verringert und andererseits die Spaltverluste des Betriebsmittels vermindert «-erden.Attempts were therefore made to provide the end faces with grooves that be fed with lubricating oil, which is under a greater pressure than .the operating fluid of the rotary piston machine. This is intended, on the one hand, to reduce the friction between the piston face and cylinder cover and on the other hand the gap losses of the operating medium diminished «-earth.
Abgesehen davon, daß bei dieser Anordnung eine besondere Druckölschmierung notwendig ist, ist es auch unvermeidbar, daß Kolbentrommel und Zylinderdeckel sich während des Betriebes berühren, indem die eine oder die andere Stirnfläche der Kolbentrommel an der Gehäusewand anläuft. Die Folge hiervon ist eine einseitige axiale Druckbelastung der Kolbentrommel in Richtung der auslaufenden Stirnseite, wodurch große Reibungsverluste entstehen.Apart from the fact that with this arrangement a special pressure oil lubrication is necessary, it is also inevitable that the piston drum and cylinder cover are touch during operation by one or the other end face of the piston barrel runs against the housing wall. The consequence of this is a one-sided axial pressure load the piston drum in the direction of the tapering end face, resulting in large friction losses develop.
Weiter ist es aus Herstellungsgründen oder anderen Erfordernissen meistens nicht angängig, die Kolbentrommel oder die feststehenden Gehäuseteile in einem Baustoff auszuführen, der hohe Flächenpressungen zuläßt und gute Laufeigenschaften aufweist. Es werden deshalb gemäß der Erfindung die Kolbentrommelstirnflächen mit eingesetzten Laufstücken versehen, die den gestellten Anforderungen genügen.It is also for manufacturing reasons or other requirements mostly not accessible, the piston barrel or the fixed housing parts in Execute a building material that allows high surface pressures and good running properties having. There are therefore according to the invention, the piston drum end faces with provided running pieces that meet the requirements.
In Abb. i ist eine Kolbentrommel i dargestellt, deren Stirnflächen mit runden Scheiben 2 versehen sind, -die z. B. durch Schrauben 3 an der Trommel befestigt sind.In Fig. I a piston drum i is shown, its end faces are provided with round discs 2, -the z. B. by screws 3 on the drum are attached.
Abb. 2 zeigt ein Ausführungsbeispiel, wobei die Kolhentrommelstirnflächen mit Laufstücken 4 ausgerüstet, die schwalbenschwanzartig im Kolben i eingelassen sind und hier z. B. durch den Nietstift 5 in ihrer Lage gesichert -werden.Fig. 2 shows an embodiment, wherein the piston drum end faces equipped with running pieces 4, which are embedded in the piston i like a dovetail are and here z. B. secured in position by the rivet pin 5.
Die eingesetzten Laufstücke stehen um ein kleines Maß, z. B. '/",mm, gegenüber den Kolbentrommelstirnflächen vor, wodurch erreicht wird, .daß sich stets ein Schleier des Schmiermittels, das zugleich Betriebsmittel sein kann, zwischen Kolbentrommel und Ge-&äusewgnd befindet. Läuft die Kolbentrommel an einer Seite .an, so gleiten nur die Laufstücke auf der feststehenden Wand des Gehäuses, während die Kolbentrommel selbst nicht mit dem Gehäuse in Berührung tritt. Beide Kolbentrommelstirnseiten stehen unter dem Betriebsmitteldruck, wodurch nennenswerte einseitig wirkende axiale Kräfte vermieden werden.The running pieces used are a small amount, e.g. B. '/ ", mm, opposite the piston drum end faces, which achieves .that there is always a veil of lubricant, which can also be operating medium, between the piston drum and housing. If the piston drum runs on one side, so only the running pieces slide on the stationary wall of the housing, while the piston drum itself does not come into contact with the housing.Both piston drum front sides are under the operating fluid pressure, which avoids significant unidirectional axial forces.
Die angeführten Ausführungsbeispiele erschöpfen keineswegs alle Möglichkeiten. Wesentlich für die Ausbildung ist, daß die aufgesetzten Laufstücke den radialen Durchtritt eines Betriebsmittels in feinem Schleier gestatten. Tritt als Betriebsmittel an die Stelle des öls ein Dampf oder Gas, so ist eine besondere Schmierung notwendig, die ohne Schwierigkeiten angebracht werden kann.The exemplary embodiments cited by no means exhaust all possibilities. It is essential for the training that the attached running pieces meet the radial Allow the passage of an operating medium in a fine veil. Occurs as a resource instead of the oil a steam or gas, special lubrication is necessary, which can be attached without difficulty.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED49505D DE471989C (en) | Side sealing of the piston drum of rotary piston machines, the front surfaces of which are separated from the side cylinder walls by a lubricant |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED49505D DE471989C (en) | Side sealing of the piston drum of rotary piston machines, the front surfaces of which are separated from the side cylinder walls by a lubricant |
Publications (1)
Publication Number | Publication Date |
---|---|
DE471989C true DE471989C (en) | 1929-02-20 |
Family
ID=7051938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DED49505D Expired DE471989C (en) | Side sealing of the piston drum of rotary piston machines, the front surfaces of which are separated from the side cylinder walls by a lubricant |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE471989C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4242065A (en) * | 1977-11-19 | 1980-12-30 | Robert Bosch Gmbh | Sliding vane compressor with end face inserts or rotor |
-
0
- DE DED49505D patent/DE471989C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4242065A (en) * | 1977-11-19 | 1980-12-30 | Robert Bosch Gmbh | Sliding vane compressor with end face inserts or rotor |
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