EP2954208A1 - Compresseur à piston asymétrique - Google Patents

Compresseur à piston asymétrique

Info

Publication number
EP2954208A1
EP2954208A1 EP13811195.0A EP13811195A EP2954208A1 EP 2954208 A1 EP2954208 A1 EP 2954208A1 EP 13811195 A EP13811195 A EP 13811195A EP 2954208 A1 EP2954208 A1 EP 2954208A1
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder
axis
compressor according
reciprocating
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
Application number
EP13811195.0A
Other languages
German (de)
English (en)
Other versions
EP2954208B1 (fr
Inventor
Christopher Zaum
Rainer Detering
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.)
Continental Reifen Deutschland GmbH
Original Assignee
Continental Reifen Deutschland 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.)
Filing date
Publication date
Application filed by Continental Reifen Deutschland GmbH filed Critical Continental Reifen Deutschland GmbH
Priority to PL13811195T priority Critical patent/PL2954208T3/pl
Publication of EP2954208A1 publication Critical patent/EP2954208A1/fr
Application granted granted Critical
Publication of EP2954208B1 publication Critical patent/EP2954208B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/01—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being mechanical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/02—Packing the free space between cylinders and pistons

Definitions

  • the invention relates to a reciprocating compressor, in particular a
  • a reciprocating compressor for a portable small compressor unit with a driven by a crank and a reciprocally movable in a cylinder and sealed against the cylinder wall piston, said crank drive having a arranged on a crankshaft crank wheel with an eccentric crank pin and a between the piston and the Crank pin arranged connecting rod, wherein the piston or piston crown is arranged fixed to the connecting rod.
  • Such reciprocating compressors are usually made of small fast-rotating shafts
  • breakdown kits i.e. for breakdown assistance systems, in particular for temporarily sealing and re-inflating automotive tires after air loss
  • Dead center UT).
  • the sealing ability decreases, as by a deviation of the axis of symmetry of the piston from the axis of symmetry of the cylinder, the so-called piston pitch is pronounced and no optimal concern of the piston seal on the cylinder wall is given more.
  • the piston inclination during idle stroke is only problematic when the reciprocating compressor works with a form, it is very disadvantageous in the compression stroke, since the maximum sealability should be achieved here for the most efficient operation of the compressor.
  • DE 20 2011 052 002 Ul discloses an air compressor in the form of a reciprocating compressor, in which the piston and thus the upper
  • Piston bottom inclined to the connecting rod axis and in the dead centers also considered to
  • Cylinder axis is formed inclined and top dead center (TDC) with a
  • Complementarily inclined head surface of the cylinder cooperates. This leads to an appropriate design to the fact that during the compression stroke of the piston with substantially perpendicular to the cylinder wall piston bottom moves and thus effectively compressed, while the idle stroke of the piston with increased inclination is shifted to the cylinder wall and thus ambient air can flow very easily past the piston seal in the compression space.
  • the disadvantage here is the costly production of pistons with connecting rods and cylinders and the required tilt-correct mounting of the piston.
  • the cylinder base, or the inside of the cylinder head must also be formed inclined so that sufficient compression takes place and thus the inclined piston does not abut the cylinder head in TDC and is damaged.
  • the object of the invention to provide a reciprocating compressor, especially for a high-speed small compressor within portable / portable devices, which in spite of simple production without piston joint and despite the use of inexpensive materials, a high compression ratio and a high delivery volume even with a kinematic inevitable
  • Piston tilt reached and avoids leaks during the lifting movement.
  • the piston and / or the cylinder are formed so that during the respective stroke movement by the relative inclination between the piston axis and
  • Cylinder wall are sealable. If a piston in a cylinder is movable about several axes, there is an orientation of the piston to the cylinder due to the ratio of the piston shape to the cylinder shape, in which a maximum sealing capability between the piston and cylinder is provided via the piston seal. This is the case in TDC and also in BDC when piston axis and cylinder axis substantially coincide. If this alignment with maximum sealing capability can not be maintained over the entire range of motion of the piston, a periodic piston movement will also result in a periodic change the sealing ability between piston and cylinder. During the movement of the piston through the middle range of motion caused by the piston tilt sickle-shaped gaps between the piston wall and the cylinder wall.
  • the invention solves this problem in that the piston, here also understood as a complete assembly with piston seal, and / or the cylinder by their geometric or material engineering training or accessories seal the crescent-shaped column.
  • the inventive training a performance increase of up to 20% over prior art devices could be achieved.
  • Movement range thus a higher compression ratio and also a larger delivery volume, but also a secure seal during the entire idle stroke.
  • the solution according to the invention thus also has the advantage that by existing even during idle safe seal of the
  • Reciprocating compressor can also be followed by a supercharger, so with already pre-compressed charge air can be applied. This significantly increases the compression ratio again.
  • the piston according to the invention is of course designed with its deviating from the circular shape oval elliptical shape so that the large semi-axis is perpendicular or substantially perpendicular to the shaft of the crank wheel.
  • a further advantageous embodiment is that the piston has an oval-elliptical shape, wherein the length of the semi-minor axis is at least 80% of the length of the major half-axis.
  • such a design advantageously consists in that the piston has an oval-elliptical shape, the small semi-axis I ⁇ mm and the semi-major axis have a length of I ⁇ mm. Surprisingly, even such a small ellipticity of the piston improves with one
  • a further advantageous embodiment is that the piston has a circular shape and the annular piston seal has a varying thickness, in which the
  • Thickness maximum is arranged and formed so that the crescent-shaped gaps are compensated, wherein the piston seal is formed so that during the
  • a further advantageous embodiment is that the cylinder has in its central compression region a deviating from the circular shape oval-elliptical shape through which the crescent-shaped gaps are at least partially compensated, wherein the annular piston seal is formed so that during the entire lifting movement and in the dead center is an elastic seal between the piston and cylinder wall.
  • the required additional processing cost of the cylinder is acceptable in particular for cast cylinders, if for the usually made of plastic piston can be used as cheap standard parts and the cylinder is possibly reusable.
  • a further advantageous embodiment is that the resilient elements are arranged in the piston body, in particular by means of resilient circumferential webs which are arranged concavely over a partial circumference of the piston through to the piston center
  • kidney-shaped recesses are formed
  • a reciprocating compressor is formed, which has very high pressure and flow rates with the simplest design even for small sizes, such a reciprocating compressor, as already said, is particularly suitable for a portable
  • the breakdown assistance system comprises a container for a fillable in the inflatable object automatic sealing means, a valve and
  • Distributor unit for sealing means and compressed gas and connecting means between valve and distributor unit and inflatable object, means for supplying energy and switching and / or control means for the operation of the system and is equipped with a compressed gas source in the form of a compressor.
  • Fig. 1 is a schematic diagram of a reciprocating compressor according to the invention
  • Fig. 2 is a production drawing of a piston for
  • Fig. 1 shows in the form of a schematic diagram of a reciprocating compressor 1 of a portable breakdown assistance system for sealing and inflating tires with a driven via a sliding crank and a cylinder 2 back and forth and sealed against the cylinder wall piston 3, wherein the sliding crank drive a Arranged on a crankshaft crank 4 with an eccentric crank pin 5 and arranged between the piston 3 and the crank pin 5 connecting rod 6, wherein the piston 3 and the piston head 7 is arranged fixed perpendicular to the connecting rod 8, so that the connecting rod 8 and piston axis. 9 to match.
  • the right part of Fig. 1 shows the reciprocating compressor 1 with its piston 3 in TDC, the left part of the reciprocating compressor 1 with its piston 3 during the compression stroke.
  • the existing here rigid connection between the piston and connecting rod without
  • Piston joint is the highest sealing capability between the piston and cylinder in the TDC and UT reached, as shown on the right side of FIG. 1 in the TDC.
  • the sealing ability decreases, as by deviating the symmetry axis of the piston, i. in this case, the connecting rod and piston axis 8, 9 from the axis of symmetry of the cylinder 10, the so-called
  • Piston inclination is pronounced and no optimal concern of the piston seal on the cylinder wall is given more.
  • the large semi-axis 14 of the oval-elliptical piston crown has a
  • Length of I ⁇ mm and the small half-axis 15 a length of I ⁇ mm.
  • the annular piston seal not shown here is so compressible and geometrically flexible, that during the entire stroke and in the dead center, a secure elastic seal between the piston and the cylinder wall.
  • the seal in OT and UT is then compressed and deformed more than in the middle compression range.
  • the piston is provided with kidney-shaped recesses 16 and 17, which give the piston in the region of the large half-axes sufficient flexibility by serving as resilient elements peripheral webs 18 and 19, so that the piston can approach in TDC and UT to the ideal circular shape ,
  • Recesses are arranged in the region of the major half-axes over a partial circumference of the piston 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

L'invention concerne un compresseur à piston asymétrique pourvu d'un piston entraîné au moyen d'un mécanisme bielle-manivelle, animé d'un mouvement de va-et-vient dans un cylindre, étanchéifié par rapport à la paroi de ce cylindre et monté de manière immobile par rapport à l'axe de la bielle. Le piston et/ou le cylindre sont réalisés de telle manière que les fentes en forme de croissant, produites pendant la course de compression par l'inclinaison relative ou le basculement relatif entre le piston et l'axe du cylindre, et situées entre le bord du piston et la paroi du cylindre, peuvent être étanchéifiées, ce qui permet de compenser les fuites.
EP13811195.0A 2013-02-05 2013-12-18 Compresseur à piston asymétrique Active EP2954208B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13811195T PL2954208T3 (pl) 2013-02-05 2013-12-18 Asymetryczna sprężarka doładowująca tłokowa

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013101110.1A DE102013101110A1 (de) 2013-02-05 2013-02-05 Asymmetrischer Hubkolbenverdichter
PCT/EP2013/077044 WO2014121874A1 (fr) 2013-02-05 2013-12-18 Compresseur à piston asymétrique

Publications (2)

Publication Number Publication Date
EP2954208A1 true EP2954208A1 (fr) 2015-12-16
EP2954208B1 EP2954208B1 (fr) 2021-11-10

Family

ID=49841667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13811195.0A Active EP2954208B1 (fr) 2013-02-05 2013-12-18 Compresseur à piston asymétrique

Country Status (5)

Country Link
EP (1) EP2954208B1 (fr)
CN (1) CN104981609B (fr)
DE (1) DE102013101110A1 (fr)
PL (1) PL2954208T3 (fr)
WO (1) WO2014121874A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017004088A1 (de) 2017-04-28 2018-10-31 Wabco Gmbh Verdichter, Druckluftversorgungsanlage zum Betreiben einer Pneumatikanlage und Verfahren zum Betreiben einer Druckluftversorgungsanlage
US10865734B2 (en) 2017-12-06 2020-12-15 Ai Alpine Us Bidco Inc Piston assembly with offset tight land profile
DE102021110256A1 (de) 2021-04-22 2022-10-27 Zf Cv Systems Europe Bv Kolben, Verdichter, Druckluftversorgungsanlage, Fahrzeug und Verfahren zum Betreiben einer Druckluftversorgungsanlage

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2792790A (en) * 1950-08-07 1957-05-21 Frank R Capps Fluid pump
US3082935A (en) * 1961-03-01 1963-03-26 Henry M Arak Aquarium pump
US4765292A (en) * 1985-08-19 1988-08-23 Morgado Ralph G Self-sealing piston apparatus
US4848213A (en) * 1988-01-11 1989-07-18 The Devilbiss Company Reciprocating piston compressor with offset cylinder
FR2752269B1 (fr) * 1996-08-09 1998-10-09 Wabco France Compresseur ou pompe volumetrique a piston
US6213725B1 (en) * 1998-03-30 2001-04-10 Wen San Chou Compressor having an improved piston
US6280163B1 (en) * 1998-03-30 2001-08-28 Wen San Chou Spring blade intake valve for air compressor
US6200110B1 (en) * 1999-03-01 2001-03-13 Wen San Chou Air compressor
US7976290B2 (en) * 2007-03-28 2011-07-12 Wei-Chi Wang Air pump with sheet metal bracket
DE102007026776A1 (de) * 2007-06-09 2008-12-11 Continental Aktiengesellschaft Reifenabdichtvorrichtung
DE102007055435A1 (de) * 2007-11-21 2009-05-28 Continental Aktiengesellschaft Vorrichtung mit einer Steckverbindung zum Abdichten und Aufpumpen aufblasbarer Gegenstände
CN201599170U (zh) * 2009-11-02 2010-10-06 攀钢集团攀枝花钢钒有限公司 锥形活塞及具有该锥形活塞的活塞压缩机
CN101737297A (zh) * 2010-01-16 2010-06-16 浙江鸿友压缩机制造有限公司 往复活塞式无油空气压缩机
JP5381891B2 (ja) * 2010-05-11 2014-01-08 マックス株式会社 ロッキングピストンのシール構造
CN101865115B (zh) * 2010-06-22 2012-11-14 浙江鸿友压缩机制造有限公司 一种空气压缩机活塞组件
TWI531721B (zh) 2011-01-25 2016-05-01 周文三 空氣壓縮機

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2014121874A1 *

Also Published As

Publication number Publication date
EP2954208B1 (fr) 2021-11-10
DE102013101110A1 (de) 2014-08-07
WO2014121874A1 (fr) 2014-08-14
CN104981609A (zh) 2015-10-14
PL2954208T3 (pl) 2022-03-07
CN104981609B (zh) 2019-03-08

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