EP2505837B1 - Kolbenkompressor - Google Patents

Kolbenkompressor Download PDF

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Publication number
EP2505837B1
EP2505837B1 EP11002716.6A EP11002716A EP2505837B1 EP 2505837 B1 EP2505837 B1 EP 2505837B1 EP 11002716 A EP11002716 A EP 11002716A EP 2505837 B1 EP2505837 B1 EP 2505837B1
Authority
EP
European Patent Office
Prior art keywords
piston
skirt
cylinder
pistons
crown
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.)
Active
Application number
EP11002716.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2505837A1 (de
Inventor
Peter Mißfeldt
Peter Dahms
Wolfgang Wiegers
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.)
JP Sauer and Sohn Machinenbau GmbH
Original Assignee
JP Sauer and Sohn Machinenbau 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 JP Sauer and Sohn Machinenbau GmbH filed Critical JP Sauer and Sohn Machinenbau GmbH
Priority to EP11002716.6A priority Critical patent/EP2505837B1/de
Priority to ES11002716.6T priority patent/ES2498731T3/es
Priority to IN690DE2012 priority patent/IN2012DE00690A/en
Priority to US13/430,118 priority patent/US20120247321A1/en
Priority to CN201210094215.5A priority patent/CN102734127B/zh
Publication of EP2505837A1 publication Critical patent/EP2505837A1/de
Application granted granted Critical
Publication of EP2505837B1 publication Critical patent/EP2505837B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • 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
    • 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
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium
    • 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
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0448—Steel

Definitions

  • the invention relates to a reciprocating compressor with one or more pistons.
  • the piston compressor according to the invention has one or more pistons.
  • the piston compressor has at least two pistons driven by a common crankshaft, wherein a first piston is designed as a one-piece piston and a second piston as a multi-part piston according to the fol lowing description.
  • the one-piece piston is preferably formed in one piece and has a piston skirt and a piston crown made of aluminum, while the second piston vorzua mecanic a piston skirt made of aluminum and a piston crown made of steel. Since preferably the first piston has a larger diameter than the second piston, a mass balance can be achieved in this way, so that the second piston has substantially the same weight as the first piston.
  • At least one piston is designed as a multi-part piston.
  • the piston is composed of at least a first and second part.
  • the first part is a piston skirt and the second part is a piston crown.
  • these two parts are made of different materials.
  • the piston crown it is possible for the piston crown to choose a material with a greater density in order to be able to form a smaller piston correspondingly heavier and thus to provide mass balance when a plurality of pistons are driven by a common crankshaft.
  • the piston skirt can be selected in its material so that it is in terms of its thermal
  • the piston crown is made of a material of greater density than the piston skirt.
  • the piston crown When the piston crown is formed of a higher density material, it becomes heavier and results in a higher weight of the piston, so that the weight of a smaller piston can be increased to substantially equal to the weight of a larger piston made of a material is made with a lower density corresponds, and so a mass balance between the piston can be achieved.
  • the piston skirt is particularly preferably made of aluminum and the piston crown is made of steel.
  • the design of the piston skirt made of aluminum is particularly useful when the cylinder is made of aluminum.
  • the sealing rings between the piston and the cylinder serving piston rings are preferably in the region of the piston head, that is arranged on the outer circumference of the piston crown. In this area, the piston rings can compensate for dimensional changes due to differential thermal expansion between cylinder and piston crown.
  • the piston crown is made of gray cast iron, for example or made of stainless steel, especially stainless steel, so that it has a good corrosion resistance.
  • the first and the second part are particularly preferably screwed together. You can do this.
  • Screws are used, which extend parallel to the piston longitudinal axis through the wall of the piston head and engage in threaded holes in the piston crown.
  • Fig. 1 shows the basic structure of a reciprocating compressor, wherein the piston compressor shown here is formed in two stages with two cylinders 2 and 4.
  • the pistons arranged in the cylinders are driven by an electric motor 6 via a common crankshaft.
  • B. an internal combustion engine come Enficient.
  • the cylinder 2 forms a first stage of the reciprocating compressor and the compressed gas in cylinder 2 is fed via an intercooler 8 to the cylinder 4 of the second stage.
  • the cylinder 4 of the second stage is smaller than the cylinder 2, that is, it has a smaller internal displacement in the interior, since the gas entering the cylinder 4 already in the first stage, ie in the cylinder 2 was compressed.
  • the second stage piston 10 has a smaller diameter than the first stage piston.
  • FIGS. 2 and 3 now show the structure of the piston 10, as it is used in the second stage in the second cylinder 4.
  • the piston arranged in the first cylinder 2 may be conventionally made in one piece from aluminum.
  • the piston 10 is formed in two parts and has a piston skirt 12, which forms the first part, and a piston head 14, which forms the second part.
  • the piston skirt 12 is made of aluminum and the piston crown 14 z. B. of gray cast iron or steel, especially stainless steel.
  • In the piston skirt 12 of the piston pin 18 is arranged for connection to a push rod or a connecting rod.
  • the piston skirt 12 and the piston crown 14 are connected to one another via four screws 20, the screws 20 extend through bores 22 in the piston skirt 12 parallel to the longitudinal axis or movement axis X of the piston 12. The screws 20 then engage with threaded holes 24 in threaded holes the piston head 14 a. The screws 20 thus extend over the entire axial length of the piston skirt 12 and fix this fixed to the piston head 14. By screwing an easy assembly of the piston is possible. In the embodiment shown, four screws 20 are distributed over the circumference of the piston skirt, but it is understood that less or more screws 20 could be used here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
EP11002716.6A 2011-04-01 2011-04-01 Kolbenkompressor Active EP2505837B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP11002716.6A EP2505837B1 (de) 2011-04-01 2011-04-01 Kolbenkompressor
ES11002716.6T ES2498731T3 (es) 2011-04-01 2011-04-01 Compresor de pistón
IN690DE2012 IN2012DE00690A (enrdf_load_stackoverflow) 2011-04-01 2012-03-12
US13/430,118 US20120247321A1 (en) 2011-04-01 2012-03-26 Piston compressor
CN201210094215.5A CN102734127B (zh) 2011-04-01 2012-03-29 活塞式压缩机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11002716.6A EP2505837B1 (de) 2011-04-01 2011-04-01 Kolbenkompressor

Publications (2)

Publication Number Publication Date
EP2505837A1 EP2505837A1 (de) 2012-10-03
EP2505837B1 true EP2505837B1 (de) 2014-06-25

Family

ID=43927775

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11002716.6A Active EP2505837B1 (de) 2011-04-01 2011-04-01 Kolbenkompressor

Country Status (5)

Country Link
US (1) US20120247321A1 (enrdf_load_stackoverflow)
EP (1) EP2505837B1 (enrdf_load_stackoverflow)
CN (1) CN102734127B (enrdf_load_stackoverflow)
ES (1) ES2498731T3 (enrdf_load_stackoverflow)
IN (1) IN2012DE00690A (enrdf_load_stackoverflow)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5307732A (en) * 1991-11-29 1994-05-03 Caterpillar Inc. Piston assembly having a wrist pin bolted therein
WO2000006877A1 (en) * 1998-07-28 2000-02-10 Teledyne Technologies, Inc. Piston and connecting rod assembly
WO2002044564A1 (de) * 2000-11-28 2002-06-06 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Schwingungsarmer mehrstufiger kolbenkompressor
DE10138070A1 (de) * 2001-08-03 2003-02-20 Knorr Bremse Systeme Kolbenkompressor mit einem Kühlluftstrom

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB314795A (en) * 1928-07-02 1929-11-21 Flottmann Ag Improvements in gas compressors
GB8520887D0 (en) * 1985-08-21 1985-09-25 Bendix Ltd Piston & cylinder apparatus
US5136992A (en) * 1990-07-12 1992-08-11 Mahle Gmbh Piston for internal combustion engines with forged sections made of steel
JPH0599146A (ja) * 1991-10-07 1993-04-20 Toyota Autom Loom Works Ltd 流体機械用ピストン及びその製造方法
JP4032580B2 (ja) * 1999-01-20 2008-01-16 株式会社豊田自動織機 流体機械用のピストン
US6935221B2 (en) * 2003-03-26 2005-08-30 Bristol Compressors, Inc. Method for manufacturing an aluminum die cast piston for reciprocating compressors
BRPI0702471B1 (pt) * 2007-07-04 2018-07-10 Whirlpool S.A. Pistão para compressor de refrigeração
DE102007050213A1 (de) * 2007-10-20 2009-04-23 Mahle International Gmbh Kolben für einen Verbrennungsmotor
US20110266810A1 (en) * 2009-11-03 2011-11-03 Mcbride Troy O Systems and methods for compressed-gas energy storage using coupled cylinder assemblies
CN201326734Y (zh) * 2008-11-18 2009-10-14 湖南江滨机器（集团）有限责任公司 组合活塞
CN101614278A (zh) * 2009-08-03 2009-12-30 石家庄金刚内燃机零部件集团有限公司 一种碳素材料与金属材料组合式活塞
CN201650483U (zh) * 2010-03-30 2010-11-24 山东滨州渤海活塞股份有限公司 新型铸铁结构活塞

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5307732A (en) * 1991-11-29 1994-05-03 Caterpillar Inc. Piston assembly having a wrist pin bolted therein
WO2000006877A1 (en) * 1998-07-28 2000-02-10 Teledyne Technologies, Inc. Piston and connecting rod assembly
WO2002044564A1 (de) * 2000-11-28 2002-06-06 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Schwingungsarmer mehrstufiger kolbenkompressor
DE10138070A1 (de) * 2001-08-03 2003-02-20 Knorr Bremse Systeme Kolbenkompressor mit einem Kühlluftstrom

Also Published As

Publication number Publication date
CN102734127B (zh) 2015-12-16
US20120247321A1 (en) 2012-10-04
ES2498731T3 (es) 2014-09-25
IN2012DE00690A (enrdf_load_stackoverflow) 2015-08-21
EP2505837A1 (de) 2012-10-03
CN102734127A (zh) 2012-10-17

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