EP0980977A2 - Piston pour un compresseur à piston - Google Patents

Piston pour un compresseur à piston Download PDF

Info

Publication number
EP0980977A2
EP0980977A2 EP99116360A EP99116360A EP0980977A2 EP 0980977 A2 EP0980977 A2 EP 0980977A2 EP 99116360 A EP99116360 A EP 99116360A EP 99116360 A EP99116360 A EP 99116360A EP 0980977 A2 EP0980977 A2 EP 0980977A2
Authority
EP
European Patent Office
Prior art keywords
piston
support ring
piston head
ring
head
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Withdrawn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
EP99116360A
Other languages
German (de)
English (en)
Other versions
EP0980977A3 (fr
Inventor
Erfindernennung liegt noch nicht vor Die
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.)
Magna BDW Technologies GmbH
Original Assignee
Magna BDW Technologies 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 Magna BDW Technologies GmbH filed Critical Magna BDW Technologies GmbH
Publication of EP0980977A2 publication Critical patent/EP0980977A2/fr
Publication of EP0980977A3 publication Critical patent/EP0980977A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • F04B39/0016—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 with valve arranged in the piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0469—Other heavy metals
    • F05C2201/0475—Copper or alloys thereof

Definitions

  • the present invention relates to a piston for piston compressors for gaseous media with one inside a cylinder reciprocating connecting rods, the connecting rod with the Piston is connected and the piston has a valve disk with at least a passage for the to be sucked in from the bottom of the piston gaseous medium and an annular piston head Has plastic.
  • Such a piston for a piston compressor for gaseous Media is known from WO 96/05430.
  • the well-known piston has a piston head with an annular groove, in a helical spring washer is used. This spans one Sealing lip of the piston head radially outwards, so that a secure Given the piston head against the cylinder inner wall is.
  • a disadvantage of this known piston is that the manufacturing costs are high for such a coil spring washer and Assembly is complex. It has also been found that at the usual heating of the piston head of the coil spring ring is uneven pushes radially outward, causing leaks between the piston head and the inner wall of the cylinder.
  • a piston according to the invention has a piston head which a closed metal support ring on the inside of the ring or a metal alloy, the expansion coefficient of the support ring material and the cylinder material approximately are the same. This ensures that the measure between the cylinder inner wall and the support ring is always constant and the one pressed against the cylinder inner wall by the support ring Piston head seals with this.
  • a support ring is inexpensive to manufacture and light on the inside the piston head.
  • the Brass support ring In an advantageous embodiment of the invention, the Brass support ring.
  • the piston head facing Be outside of the support ring curved outward. This results in an easier attachment of the support ring in the corresponding groove of the piston head.
  • the outside the piston head is also curved. Total results this advantageously results in a uniform power transmission on the outside of the piston head and thus one secure seal between piston and inner cylinder wall.
  • FIG. 1 shows a piston 10 according to the invention for a piston compressor for gaseous media with a cylinder 12.
  • a connecting rod 14 is moved back and forth or moved up and down.
  • the connecting rod 14 is fixed to the piston 10 connected.
  • the piston 10 has a valve disk 16 with an annular shape arranged passages 18 for the piston side gaseous medium to be sucked up.
  • valve plate 16 protrudes through the central ring opening of the piston head 20 or the support ring 22 through, the diameter of the projecting valve plate element 30 is smaller than the diameter of the support ring 22.
  • piston head 20 one on its inner side facing the connecting rod 14 annular support surface 32 for a piston disc 34.
  • the Piston head 20 can be between the valve plate 14 and the Piston disk 34 are moved up and down.
  • a closed Support ring 22 made of metal or a metal alloy, the coefficients of expansion of the support ring material and of the cylinder material are approximately the same.
  • the support ring 22 is made of brass.
  • FIG. 2 shows a schematic, partially sectioned detail drawing of the piston head 20. You can see the annular formation of the piston head 20 and the formation of the bearing surface 32 for the piston disc 34. Furthermore, it can be seen that an annular groove 36 on the inside of the piston head 20 is arranged to receive the support ring 22. The one in FIG. 3 illustrated cross section of the piston head 20 illustrates this.
  • Figure 4 shows a schematic, partially sectioned representation of the support ring 22. It can be seen that the support ring 22 on the the outside 28 facing the piston head 20 is curved outwards is trained. It is also clear that the support ring 22 on the inside of the ring has bevelled edges 24, 26. By this bevel becomes the mobility of the valve plate 16 or the valve plate element 30 in the opening of the support ring 22 improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
EP99116360A 1998-08-20 1999-08-19 Piston pour un compresseur à piston Withdrawn EP0980977A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29814962U DE29814962U1 (de) 1998-08-20 1998-08-20 Kolben für einen Kolbenverdichter
DE29814962U 1998-08-20

Publications (2)

Publication Number Publication Date
EP0980977A2 true EP0980977A2 (fr) 2000-02-23
EP0980977A3 EP0980977A3 (fr) 2000-10-11

Family

ID=8061560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99116360A Withdrawn EP0980977A3 (fr) 1998-08-20 1999-08-19 Piston pour un compresseur à piston

Country Status (2)

Country Link
EP (1) EP0980977A3 (fr)
DE (1) DE29814962U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20106700U1 (de) * 2001-04-18 2002-05-23 Alusuisse Bayrisches Druckguß-Werk GmbH & Co. KG, 85570 Markt Schwaben Kolben für einen Kolbenverdichter
WO2004011804A1 (fr) * 2002-07-24 2004-02-05 Ventrex Automotive Gmbh Dispositif pour comprimer des gaz
AT414270B (de) * 2002-07-24 2006-10-15 Ventrex Automotive Gmbh Einrichtung zur verdichtung von gasen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2076072A (en) * 1980-03-14 1981-11-25 Maruyama Mfg Co Piston for a piston pump
GB2175653A (en) * 1985-05-23 1986-12-03 Song Wu An air cooling and reciprocating type of air compressor without lubricant
EP0312597A1 (fr) * 1987-04-21 1989-04-26 Proizvodstvennoe Obiedinenie 'zavod Imeni M.I.Kalinina' Piston de machine a deplacement volumetrique
WO1996005430A1 (fr) * 1994-08-17 1996-02-22 Bayrisches Druckguss-Werk Thurner Gmbh & Co. Kg Piston pour compresseur a piston de milieux gazeux
DE29717655U1 (de) * 1997-10-02 1998-11-12 Alusuisse Bayrisches Druckguß-Werk GmbH & Co. KG, 85570 Markt Schwaben Kolbenverdichter für gasförmige Medien

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2076072A (en) * 1980-03-14 1981-11-25 Maruyama Mfg Co Piston for a piston pump
GB2175653A (en) * 1985-05-23 1986-12-03 Song Wu An air cooling and reciprocating type of air compressor without lubricant
EP0312597A1 (fr) * 1987-04-21 1989-04-26 Proizvodstvennoe Obiedinenie 'zavod Imeni M.I.Kalinina' Piston de machine a deplacement volumetrique
WO1996005430A1 (fr) * 1994-08-17 1996-02-22 Bayrisches Druckguss-Werk Thurner Gmbh & Co. Kg Piston pour compresseur a piston de milieux gazeux
DE29717655U1 (de) * 1997-10-02 1998-11-12 Alusuisse Bayrisches Druckguß-Werk GmbH & Co. KG, 85570 Markt Schwaben Kolbenverdichter für gasförmige Medien

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20106700U1 (de) * 2001-04-18 2002-05-23 Alusuisse Bayrisches Druckguß-Werk GmbH & Co. KG, 85570 Markt Schwaben Kolben für einen Kolbenverdichter
WO2004011804A1 (fr) * 2002-07-24 2004-02-05 Ventrex Automotive Gmbh Dispositif pour comprimer des gaz
AT414270B (de) * 2002-07-24 2006-10-15 Ventrex Automotive Gmbh Einrichtung zur verdichtung von gasen
AT414269B (de) * 2002-07-24 2006-10-15 Ventrex Automotive Gmbh Einrichtung zur verdichtung von gasen

Also Published As

Publication number Publication date
EP0980977A3 (fr) 2000-10-11
DE29814962U1 (de) 1999-11-04

Similar Documents

Publication Publication Date Title
DE69606563T2 (de) Dichtungsstreifen insbesondere für fenster- und türrahmen und dgl.
DE69929713T2 (de) Hydrodynamische dichtung und verfahren zur herstellung
DE3205878A1 (de) Stoessel fuer einen verbrennungsmotor
CH660407A5 (de) Dichtring fuer kolbenstangen.
DE2460185C2 (de) Verfahren zur Herstellung von Dichtungselementen mit hydrodynamischer Wirkung
DE2459524A1 (de) Lippendichtung aus polytetrafluoraethylen
EP0627582A1 (fr) Dispositif de joint
DE2829352A1 (de) Zusammengesetzter bzw. verbunddichtring, insbesondere fuer eine stirling-maschine
DE3213809C2 (de) Kassettendichtung
DE2756403B2 (de) Dichtung
WO2006103279A1 (fr) Compresseur de fluide frigorigene
DE4314171A1 (de) Einsatzwasserdichtung
DE60107549T2 (de) Hochdruckdichtung
DE2759091C2 (de) Vorrichtung zum Regulieren eines Gasdurchflusses
DE2608202A1 (de) Korrosionsbestaendiges rohrleitungsventil fuer den betrieb mit aggressiven medien
DE3332455A1 (de) Ventilstoessel mit keramik-stoesselflaeche
DE3412594A1 (de) Gleitringdichtung
EP0980977A2 (fr) Piston pour un compresseur à piston
DE3501066C2 (fr)
EP0166855A2 (fr) Vanne papillon pour fluides agressifs
DE60015450T2 (de) Dichtungsanordnung für ein mechanisches Element dass sich hin- und her bewegt, relativ zu einem Führungssitz, insbesondere für Stossdämpferstange
DE69416390T2 (de) Thermostatventil
DE19800827C1 (de) Dichtung
DE69118845T2 (de) Federbelastete Ringdichtungsanordnung
DE2160645A1 (de) Abstreifring für umlaufende Wellen u dgl

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIN1 Information on inventor provided before grant (corrected)

Inventor name: THURNER, HELMUT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20010411

AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17Q First examination report despatched

Effective date: 20030214

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20030625