DE19514874A1 - Dry-type piston seal for Stirling machines - Google Patents

Dry-type piston seal for Stirling machines

Info

Publication number
DE19514874A1
DE19514874A1 DE1995114874 DE19514874A DE19514874A1 DE 19514874 A1 DE19514874 A1 DE 19514874A1 DE 1995114874 DE1995114874 DE 1995114874 DE 19514874 A DE19514874 A DE 19514874A DE 19514874 A1 DE19514874 A1 DE 19514874A1
Authority
DE
Germany
Prior art keywords
piston
springs
piston seal
pressed
dry
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Withdrawn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
DE1995114874
Other languages
German (de)
Inventor
Alois Tischler
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.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE1995114874 priority Critical patent/DE19514874A1/en
Publication of DE19514874A1 publication Critical patent/DE19514874A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

The piston seal has a rubber plate pressed between an undersized piston upper part and piston lower part by means of springs. The bead formed round the circumference of the piston is pressed with different strength against the cylinder wall according to the pretension of the springs and thereby serves as a sealing face. A thermally conditioned volume increase in the sealing material does not increase the friction force but is diverted into the pretensioned springs.

Description

Bekanntlich erfolgt die Abdichtung zwischen Kolben und Zylinderwandung u. a. mittels Kolbenringen. Die Kolbenringe verfügen im kalten Zustand schon über eine beachtliche Reibung, die mit zunehmender Temperatur noch steigt, und müssen, um Dichtheit zu erreichen, zudem noch mehrfach ausgeführt werden. Diese Abdichtungsart erfordert, um die Reibung des Kolbens zu überwinden, einen hohen Kraftaufwand und vermindert somit die effektive Leistung von Kraft- und Arbeitsmaschinen. Ferner kann, wie es bei Niedertemperaturmaschinen nötig ist, bei der bisherigen Lösung der Wärmetransport durch den Kolben hindurch nicht verhindert werden.As is known, the seal between the piston and cylinder wall u. a. by means of Piston rings. The piston rings already have a considerable amount when cold Friction, which increases with increasing temperature, and need to be tight reach, also be executed multiple times. This type of sealing requires to To overcome the friction of the piston, a high effort and reduced thus the effective performance of power and work machines. Furthermore, as is the case with Low temperature machines is necessary in the previous solution, the heat transfer cannot be prevented through the piston.

Die Erfindung soll die Reibkraft reduzieren und eine stufenlose Einstellung dieser erlauben. Ferner soll der Wärmetransport von Kolbenoberseite zu Kolbenunterseite beliebig definierbar sein.The invention is intended to reduce the frictional force and to adjust this continuously allow. Furthermore, the heat transfer from the top of the piston to the underside of the piston be freely definable.

Die Vorteile der Erfindung bestehen in der durch Schrauben stufenlos einstellbaren Reibkraft des Kolbens an der Zylinderwandung und in der, durch die vorgespannten Federn erreichten, Unabhängigkeit der Reibkraft von der Temperatur. Ferner kann, je nach Füllmaterial des Kunststoffes, der Wärmeverlust durch den Kolben hindurch vermindert werden.The advantages of the invention reside in the fact that they are infinitely adjustable by means of screws Frictional force of the piston on the cylinder wall and in the through the preloaded Springs reached independence of the frictional force from the temperature. Furthermore, depending after filling material of the plastic, the heat loss through the piston can be reduced.

Die Erfindung läßt sich auch zur Abdichtung von Gestängen verwenden.The invention can also be used to seal rods.

Als Ausführungsbeispiel sei die Verwendung als Kolbendichtung und Gestängedichtung für Stirlingmaschinen des (β-Typs nach Rankine-Napier oder nach Philips angeführt.The use as a piston seal and rod seal is an exemplary embodiment for Stirling engines of the (β-type according to Rankine-Napier or according to Philips.

BezugszeichenlisteReference list

7 1 Stk. Verdrängerkolben
6 1 Stk. Kolbendichtung
4 1 Stk. Kolbenstange
4 1 Std. Kolbendruckplatte
3 4 Stk. Druckfeder
2 4 Stk. Schraube
1 1 Stk Zylinder 7 1 displacement piston
6 1 piece piston seal
4 1 piston rod
4 1 hour piston pressure plate
3 4 pcs. Compression spring
2 4 screws
1 1 pc cylinder

Claims (2)

1. Diese Kolbendichtung ist dadurch gekennzeichnet, daß eine Gummiplatte (je nach Bedarf ein beliebiger Kunststoff, auch mit gewünschten Füllstoffen) zwischen, auf Untermaß gefertigten, Kolbenoberteil und Kolbenunterteil mittels beliebig vorspannbarer Federn gepreßt wird. Der so am Kolbenumfang entstehende Wulst wird je nach Vorspannung der Federn verschieden stark an die Zylinderwandung gepreßt und dient als Dichtfläche. Eine thermisch bedingte Volumenzunahme des Dichtwerkstoffes führt nicht zu einer Erhöhung der Reibkraft, sondern wird in die vorgespannten Federn umgeleitet.1. This piston seal is characterized in that a rubber plate (depending on the need any plastic, also with desired fillers) is pressed between, made to undersize, upper piston part and lower piston part by means of springs that can be preloaded. The bulge thus formed on the circumference of the piston is pressed to the cylinder wall to different extents, depending on the preload of the springs, and serves as a sealing surface. A thermally induced increase in the volume of the sealing material does not lead to an increase in the frictional force, but is redirected to the preloaded springs. 2. Die oben angeführte Kolbendichtung ist dadurch gekennzeichnet, daß sie sich speziell für den Einsatz in Stirlingmaschinen eignet.2. The piston seal above is characterized, that it is particularly suitable for use in Stirling engines.
DE1995114874 1995-04-22 1995-04-22 Dry-type piston seal for Stirling machines Withdrawn DE19514874A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1995114874 DE19514874A1 (en) 1995-04-22 1995-04-22 Dry-type piston seal for Stirling machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1995114874 DE19514874A1 (en) 1995-04-22 1995-04-22 Dry-type piston seal for Stirling machines

Publications (1)

Publication Number Publication Date
DE19514874A1 true DE19514874A1 (en) 1996-10-24

Family

ID=7760136

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1995114874 Withdrawn DE19514874A1 (en) 1995-04-22 1995-04-22 Dry-type piston seal for Stirling machines

Country Status (1)

Country Link
DE (1) DE19514874A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10324479A1 (en) * 2003-05-30 2004-12-16 Contitech Vibration Control Gmbh Vibration damper has piston consisting of flexible ring mounted between lower support plate and upper clamping plate, adjusting screw moving clamping plate to adjust degree of compression of ring and its radial expansion

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE27463C (en) * F. W. FLÜGEL in Gotha und GUST. SCHEINERT in Berlin, Oranienstr. 181 New on pistons and piston packings
DE320306C (en) * 1920-04-19 Mueller Hermann piston
US1598915A (en) * 1926-02-08 1926-09-07 Keyes Walter Albert Piston
GB634312A (en) * 1945-10-24 1950-03-15 Gratzmuller Jean Louis Improvements in or relating to sealing units for sliding members and particularly a piston sliding in a cylinder
DE1735410U (en) * 1956-09-27 1956-12-06 Eduard Linnhoff Maschinenfabri PLUG SOCKET FOR CAST ASPHALT MOTOR STOVE.
FR1127141A (en) * 1955-05-26 1956-12-10 Applic Cinemecaniques Soc D Advanced piston
AT211117B (en) * 1958-05-21 1960-09-26 Gianfranco Sgarbossa piston
AT264937B (en) * 1964-04-14 1968-09-25 Jean Louis Gratzmuller Packing
US3589246A (en) * 1967-11-04 1971-06-29 Kobe Steel Ltd Ultrahigh pressure self-sealing device
DE7136064U (en) * 1972-03-02 Demag Gmbh Sealing lip packing with gap bridging
DE1775954A1 (en) * 1965-10-28 1973-04-19 Ici Ltd SEAL BETWEEN AN OUTER HOLLOW BODY AND AN INNER ORGAN
DE2611999A1 (en) * 1976-03-20 1977-09-29 Bosch Gmbh Robert DOUBLE-ACTING PISTON
DE2637028A1 (en) * 1976-08-17 1978-02-23 Interatom Dynamic seal ring between two coaxial tubes - has location by internal and external flange rings to allow for heat expansion
DE2925053A1 (en) * 1978-06-21 1980-01-10 Umberto Monacelli Servo piston for pneumatic stapler - has rigid flange core with resilient outer sleeve and O=ring seal between flange and sleeve
DE8420767U1 (en) * 1984-11-29 Chemat GmbH, 7592 Renchen Stuffing box nut with integrated spring element
DE9104448U1 (en) * 1991-04-12 1991-06-13 G. Siempelkamp GmbH & Co.KG, 47803 Krefeld Dewatering press
DE4124531C1 (en) * 1991-07-24 1992-11-26 Fa. Carl Freudenberg, 6940 Weinheim, De
DE4203384A1 (en) * 1992-02-06 1993-08-19 Hunger Walter Two=part piston esp. for IC engine - has elastically deformable piston ring between piston base and skirt

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8420767U1 (en) * 1984-11-29 Chemat GmbH, 7592 Renchen Stuffing box nut with integrated spring element
DE320306C (en) * 1920-04-19 Mueller Hermann piston
DE27463C (en) * F. W. FLÜGEL in Gotha und GUST. SCHEINERT in Berlin, Oranienstr. 181 New on pistons and piston packings
DE7136064U (en) * 1972-03-02 Demag Gmbh Sealing lip packing with gap bridging
US1598915A (en) * 1926-02-08 1926-09-07 Keyes Walter Albert Piston
GB634312A (en) * 1945-10-24 1950-03-15 Gratzmuller Jean Louis Improvements in or relating to sealing units for sliding members and particularly a piston sliding in a cylinder
FR1127141A (en) * 1955-05-26 1956-12-10 Applic Cinemecaniques Soc D Advanced piston
DE1735410U (en) * 1956-09-27 1956-12-06 Eduard Linnhoff Maschinenfabri PLUG SOCKET FOR CAST ASPHALT MOTOR STOVE.
AT211117B (en) * 1958-05-21 1960-09-26 Gianfranco Sgarbossa piston
AT264937B (en) * 1964-04-14 1968-09-25 Jean Louis Gratzmuller Packing
DE1775954A1 (en) * 1965-10-28 1973-04-19 Ici Ltd SEAL BETWEEN AN OUTER HOLLOW BODY AND AN INNER ORGAN
US3589246A (en) * 1967-11-04 1971-06-29 Kobe Steel Ltd Ultrahigh pressure self-sealing device
DE2611999A1 (en) * 1976-03-20 1977-09-29 Bosch Gmbh Robert DOUBLE-ACTING PISTON
DE2637028A1 (en) * 1976-08-17 1978-02-23 Interatom Dynamic seal ring between two coaxial tubes - has location by internal and external flange rings to allow for heat expansion
DE2925053A1 (en) * 1978-06-21 1980-01-10 Umberto Monacelli Servo piston for pneumatic stapler - has rigid flange core with resilient outer sleeve and O=ring seal between flange and sleeve
DE9104448U1 (en) * 1991-04-12 1991-06-13 G. Siempelkamp GmbH & Co.KG, 47803 Krefeld Dewatering press
DE4124531C1 (en) * 1991-07-24 1992-11-26 Fa. Carl Freudenberg, 6940 Weinheim, De
DE4203384A1 (en) * 1992-02-06 1993-08-19 Hunger Walter Two=part piston esp. for IC engine - has elastically deformable piston ring between piston base and skirt

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10324479A1 (en) * 2003-05-30 2004-12-16 Contitech Vibration Control Gmbh Vibration damper has piston consisting of flexible ring mounted between lower support plate and upper clamping plate, adjusting screw moving clamping plate to adjust degree of compression of ring and its radial expansion

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8122 Nonbinding interest in granting licenses declared
8139 Disposal/non-payment of the annual fee