EP2161451A1 - Compresseur à piston - Google Patents

Compresseur à piston Download PDF

Info

Publication number
EP2161451A1
EP2161451A1 EP08105270A EP08105270A EP2161451A1 EP 2161451 A1 EP2161451 A1 EP 2161451A1 EP 08105270 A EP08105270 A EP 08105270A EP 08105270 A EP08105270 A EP 08105270A EP 2161451 A1 EP2161451 A1 EP 2161451A1
Authority
EP
European Patent Office
Prior art keywords
piston
crankshaft
compressor according
guide ring
stepped
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Withdrawn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
EP08105270A
Other languages
German (de)
English (en)
Inventor
Beat Frefel
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.)
HAUG Kompressoren AG
Original Assignee
HAUG Kompressoren AG
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 HAUG Kompressoren AG filed Critical HAUG Kompressoren AG
Priority to EP08105270A priority Critical patent/EP2161451A1/fr
Publication of EP2161451A1 publication Critical patent/EP2161451A1/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Withdrawn legal-status Critical Current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
    • F04B25/00—Multi-stage pumps
    • F04B25/02—Multi-stage pumps of stepped piston type
    • 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
    • F04B39/04—Measures to avoid lubricant contaminating the pumped fluid

Definitions

  • the invention relates to a particular oil-free piston compressor for compressing gaseous media in plunger compressor construction according to the preamble of claim 1.
  • Such plunger compressors are characterized in that the piston and crankshaft are directly connected.
  • the driven via the connecting rod, reciprocally movable guide piston of plunger compressors can simultaneously form pressure piston.
  • Plunger compressors have long been known and in use.
  • a genre moderately comparable piston compressor is for example from the WO 02/068822 A1 known.
  • This document describes an oil-free plunger compressor with a single acting plunger. Compaction takes place only on one side of the stroke (ic in the upstroke).
  • a disadvantage of this design is that the delivery quantity per stroke is limited. In practice, several single-acting plungers are connected in parallel to increase the delivery quantity.
  • a major disadvantage of this multi-cylinder design is the greater space requirement and the greater production costs.
  • a piston compressor for compressing gaseous media in plunger compressor design has at least one piston, a crankshaft for driving the piston and a preferably substantially one-piece connecting rod, which connects the piston directly to the crankshaft.
  • the piston compressor is preferably oil-free. With the connecting rod, the rotational movement of the crankshaft can be converted into a linear movement for the piston.
  • the piston is designed as a stepped piston, which has at least two piston parts.
  • the second piston part or the further piston parts have a smaller diameter than the first piston part.
  • Each piston part is associated with a working space, wherein preferably one of the working spaces are cylindrical and the other working space or the other working spaces are annular.
  • the piston compressor according to the invention is designed as an oil-free plunger compressor.
  • a two-stage compression can be achieved with one revolution of the crankshaft, whereby the compression efficiency can be significantly improved.
  • Such a plunger compressor is particularly suitable for use in rail vehicles due to the small size. Of course, other applications are conceivable.
  • the reciprocating compressor can be designed as a single cylinder with a single stepped piston.
  • the piston compressor can thus be designed in a boxer design, in which the respective stepped pistons are arranged on opposite sides of the compressor.
  • the first piston part and the second piston part can each be accommodated in a cylinder, wherein for predetermining the working spaces at least one of the cylinders and preferably each of the cylinders is closed by a plate with a valve arrangement (also abbreviated to "valve plate” hereinafter) is.
  • a plate with a valve arrangement also abbreviated to "valve plate” hereinafter
  • a plate is for example in the WO 2005/059362 been described.
  • the first piston part i. the piston part with the largest diameter, can form the front end of the stepped piston.
  • the second piston part forms the front end of the stepped piston. In this case, there would be a compressor in which the compression in the work spaces would be done in common mode.
  • the adjoining the connecting rod piston part may have a first guide ring for guiding in the cylinder.
  • the guide ring is slidably mounted in the cylinder and ensures a long life of the compressor.
  • the guide ring may be made of a high temperature resistant plastic with a low coefficient of friction, for example, a plastic based on PTFE.
  • the guide ring should consist of a high temperature resistant plastic with a low coefficient of friction, for example, a plastic based on PTFE.
  • first guide ring and the second guide ring are arranged at a distance from each other on the piston part.
  • At least one piston ring preferably two piston rings for sealing the respective working space, can be arranged between the two guide rings.
  • Such piston rings may for example consist of a plastic based on PTFE.
  • An advantageous sealing and guiding can result if the length of the first guide ring and optionally of the second guide ring measured in the axial direction of the piston is a multiple compared to the length of the at least one piston ring.
  • a multiple means that the guide rings are at least twice as long as the piston rings. It is particularly advantageous if the length of the first guide ring and optionally of the second guide ring is in each case at least five times, and particularly preferably approximately ten times, compared to the length of the piston ring.
  • the second guide ring arranged on the side facing away from the connecting rod of the piston part consists of plastic and in a starting position after a first mounting against the inner diameter of the respective cylinder and / or with respect to the plate with the valve assembly, through which the respective Piston part performed or feasible, has an undersize.
  • the second guide ring can be adapted precisely to the inside diameter of the cylinder and / or the plate by wear. This embodiment can lead to a further optimization of the guiding properties of the stepped piston in the cylinders and reduce the harmful volume.
  • a top valve plate which closes the working space at the end of the stepped piston, can connect a cylinder head, which is provided with channels for supplying and discharging the medium from the associated working space.
  • the lamella valve can essentially be made up of two disk bodies and a lamella part arranged sandwiched between them.
  • the fin part may have fixed and movable for a suction sections.
  • the movable portions may be formed, for example, as tongue-shaped lamellar portions ("tongue portions") which may be predetermined by correspondingly shaped cuts in the lamella portion.
  • crankshaft, the stepped piston and connecting rod at least in the end position form a unit that as a whole from outside to End position by targeted movement after at least one predetermined sequence of movements in a preferably one-piece housing part can be introduced.
  • the crankshaft can be rotatably supported via shaft bearings in the housing part in an end position.
  • the unit can be removed as a whole, starting from the end position of the housing part.
  • no additional cover parts or other crankcase parts are necessary for the rotatable mounting of the crankshaft.
  • the first piston part forms the front end of the stepped piston
  • the first piston part is fastened to the adjacent second piston part by means of a screw (for example a countersunk screw). Thanks to the detachable connection arrangement, the first piston part can be removed from the aforementioned unit, whereby disassembly of the valve plate and cylinder can be made, and then remove the entire crank mechanism unit via the opening on the crankcase.
  • FIG. 1 shows a designated with 1 plunger compressor with a cylinder 20, 21 movably arranged step piston 2.
  • the stepped piston is guided in the cylinder 21.
  • the stepped piston 2 is connected via a connecting rod 3 directly to the crankshaft 4.
  • a piston pin 28 and a piston pin bearing 29 are used for the connection of the stepped piston 2 with the crankshaft 4.
  • the stepped piston 2 consists of two piston parts, namely a first piston part 5 and a second piston part 6.
  • the piston part 5 is fastened to the lower piston part 6 by means of a countersunk screw. Both connecting rods 3 and crankshaft 4 are made in one piece.
  • the second piston part 6, which forms a guide piston evidently has a smaller diameter than the first piston part 5, which forms the front end of the stepped piston.
  • the first piston part 5 and the second piston part 6 are each received in a cylinder 20, 21.
  • the working axis of the stepped piston is designated A.
  • each of the cylinders 20, 21 by an in FIG. 1 only schematically illustrated plate 22, 23 closed with a valve assembly.
  • a valve plate 22, 23 includes valves (not shown) for the supply and removal of air or other gaseous medium.
  • a cylinder head 10 connects, which is provided with channels for supplying and discharging air or other gaseous medium from the associated working space 17 (the air supply and removal is indicated by arrows).
  • the valve plate 23 is clamped between the cylinders 20, 21.
  • the cylinder 21 is with channels provided for the supply and removal of air from the working space 18 (see arrows).
  • crankshaft 4 is mounted in a one-piece housing part 7.
  • the longitudinal direction in which the crankshaft 4 extends is indicated by an arrow x.
  • the crankcase further has an opening 15 and a lid formed as a cover part 16 which is detachably mounted on the opposite side of the stepped piston 7 of the housing part.
  • FIG. 2 shows a developed crank mechanism for the plunger compressor.
  • the crank mechanism forms a unit, which - as described below with reference to FIGS. 4 to 6 explained - as a whole in the crankcase can be installed or removed.
  • the unit basically consists of the three components: stepped piston 2, connecting rod 3 and crankshaft 4.
  • guide rings 24 and 25 can be seen, which consist of a plastic based on PTFE. Between these spaced guide rings 24 and 25 is a piston ring pair 26 which serves to seal the lower, annular working space.
  • the piston rings are also made of a PTFE-based plastic.
  • the length L1 and L2 of the first guide ring 24 and the second guide ring 25 measured in the axial direction A of the stepped piston is compared to the length designated L3 of the piston rings 26 in about ten times, whereby an optimal guiding and sealing effect can be achieved.
  • the second guide ring 25 has in a starting position after a first mounting against the inner diameter of the valve plate 23 an undersize, whereby after a first startup (inlet) of the guide ring 25 exactly adapted to the inner diameter of the valve plate 23 by wear is.
  • the upper piston part 5 is equipped with two piston rings 27 for sealing the cylindrical working space.
  • crankcase is configured substantially rectangular in a plan view.
  • the housing part 7 thus has two approximately cuboid cavities, which are separated by a wall portion. In the respective cavities respectively the (not visible here) crankshaft and clutch are added to a drive.
  • FIG. 4 shows the piston compressor in a prepared for disassembly position (or vice versa: mounting position), in which the drive-side components (in particular the clutch) and the cylinders were removed with cylinder head and valve plates. Furthermore, the in FIG. 1 With 16 designated cover plate of the crankcase removed, creating a mounting hole is formed. The mounting hole is in the FIGS. 4 and 5 indicated by a rectangle marked 15. The working axis A is located in the cavity in the middle.
  • FIG. 4 shows further that the housing part 7 basically basically rectangular and in particular the respective cavities for the crankshaft 4 on the one hand and for a coupling for connection to a drive on the other hand are designed rectangular.
  • the expansion of the shaft bearings creates openings 8 and 9.
  • the distance E between diagonally opposite edges 11 and 12 at the housing openings 8 and 9 is 2R.
  • the shaft ends 13 and 14 of the crankshaft 4 define a circle. This circle is indicated by a dot-dash line (circle center: A, circle radius: E / 2).
  • FIG. 4 further reveals that the housing part 7 is configured approximately cuboid.
  • crankshaft 4 After a rotation about the A-axis by 90 °, the crankshaft 4 (together with the connecting rods and pistons, not shown) is in a removal position. This position is in FIG. 5 shown. From the removal position, the crankshaft 4 is moved without further change in its angular position with respect to the axis A as a function of the (not shown) form of the mounting hole so far that it can be pulled out without resistance through the mounting hole 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
EP08105270A 2008-09-09 2008-09-09 Compresseur à piston Withdrawn EP2161451A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08105270A EP2161451A1 (fr) 2008-09-09 2008-09-09 Compresseur à piston

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08105270A EP2161451A1 (fr) 2008-09-09 2008-09-09 Compresseur à piston

Publications (1)

Publication Number Publication Date
EP2161451A1 true EP2161451A1 (fr) 2010-03-10

Family

ID=40343460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08105270A Withdrawn EP2161451A1 (fr) 2008-09-09 2008-09-09 Compresseur à piston

Country Status (1)

Country Link
EP (1) EP2161451A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103410697A (zh) * 2013-08-24 2013-11-27 安徽华晶机械股份有限公司 一种活塞式全无油空气压缩机
CN105715509A (zh) * 2016-04-08 2016-06-29 石家庄嘉祥精密机械有限公司 轨道交通机车用大排量无油活塞空压机和空气压缩方法
CN110259661A (zh) * 2019-07-24 2019-09-20 浙江北上新能源科技股份有限公司 一种新型压缩机
CN117108476A (zh) * 2023-10-24 2023-11-24 自贡诺力斯百盛压缩机有限公司 一种变频气体压缩机

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT119846B (de) * 1929-04-16 1930-11-10 Knorr Bremse Ag Kolben, insbesondere für kleine, rasch laufende, kreuzkopflose Verdichter.
DE2945727A1 (de) * 1978-12-15 1980-07-03 Nova Werke Ag Druckluftkompressor
EP0353462A1 (fr) * 1988-07-21 1990-02-07 Elring Dichtungswerke GmbH Pistons, en particulier pistons plongeurs pour compresseurs
WO2002068822A1 (fr) 2001-02-28 2002-09-06 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Compresseur a piston a fonctionnement a sec (lubrification de transmission a vilebrequin)
EP1375919A1 (fr) * 2002-06-25 2004-01-02 Arnold Müller GmbH & Co. KG Compresseur, en particulier pour un système à ressort pneumatique pour un véhicule
EP1538052A2 (fr) * 2003-12-03 2005-06-08 Haldex Brake Corporation Compresseur
WO2005059362A1 (fr) 2003-12-09 2005-06-30 Fritz Haug Ag Compresseur a piston pour comprimer des substances gazeuses dans au moins deux chambres de travail
WO2006024510A1 (fr) * 2004-09-02 2006-03-09 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Compresseur a piston produisant un flux d'air de refroidissement interne dans le carter de vilebrequin

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT119846B (de) * 1929-04-16 1930-11-10 Knorr Bremse Ag Kolben, insbesondere für kleine, rasch laufende, kreuzkopflose Verdichter.
DE2945727A1 (de) * 1978-12-15 1980-07-03 Nova Werke Ag Druckluftkompressor
EP0353462A1 (fr) * 1988-07-21 1990-02-07 Elring Dichtungswerke GmbH Pistons, en particulier pistons plongeurs pour compresseurs
WO2002068822A1 (fr) 2001-02-28 2002-09-06 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Compresseur a piston a fonctionnement a sec (lubrification de transmission a vilebrequin)
EP1375919A1 (fr) * 2002-06-25 2004-01-02 Arnold Müller GmbH & Co. KG Compresseur, en particulier pour un système à ressort pneumatique pour un véhicule
EP1538052A2 (fr) * 2003-12-03 2005-06-08 Haldex Brake Corporation Compresseur
WO2005059362A1 (fr) 2003-12-09 2005-06-30 Fritz Haug Ag Compresseur a piston pour comprimer des substances gazeuses dans au moins deux chambres de travail
WO2006024510A1 (fr) * 2004-09-02 2006-03-09 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Compresseur a piston produisant un flux d'air de refroidissement interne dans le carter de vilebrequin

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103410697A (zh) * 2013-08-24 2013-11-27 安徽华晶机械股份有限公司 一种活塞式全无油空气压缩机
CN103410697B (zh) * 2013-08-24 2016-04-13 安徽华晶机械股份有限公司 一种活塞式全无油空气压缩机
CN105715509A (zh) * 2016-04-08 2016-06-29 石家庄嘉祥精密机械有限公司 轨道交通机车用大排量无油活塞空压机和空气压缩方法
CN110259661A (zh) * 2019-07-24 2019-09-20 浙江北上新能源科技股份有限公司 一种新型压缩机
CN117108476A (zh) * 2023-10-24 2023-11-24 自贡诺力斯百盛压缩机有限公司 一种变频气体压缩机
CN117108476B (zh) * 2023-10-24 2024-01-23 自贡诺力斯百盛压缩机有限公司 一种变频气体压缩机

Similar Documents

Publication Publication Date Title
EP1736666B1 (fr) Boîte de vitesse de pompe
DE3221912A1 (de) Pumpe
DE3545200A1 (de) Taumelscheibenkompressor mit variablem hub
EP3339617A1 (fr) Boîtier de cylindre, procédé de fabrication d'un boîtier de cylindre et noyau de coulée
DE60215467T2 (de) Kolbenschmiersystem für einen hubkolbenverdichter mit einem linearmotor
DE4326323C2 (de) Taumelscheibenverdichter
EP2161451A1 (fr) Compresseur à piston
DE4326408C2 (de) Vielfach-Axialkolbenverdichter
EP1702162B1 (fr) Compresseur a piston pour comprimer des substances gazeuses dans au moins deux chambres de travail
DE102015210597A1 (de) Hubkolbenmotor und Kraftfahrzeug
DE102006044294B3 (de) Radialkolbenpumpe
DE102007001794A1 (de) Hydraulische Kolbenmaschine
WO2008080445A1 (fr) Moteur à pistons hydraulique
DE3820632C2 (fr)
DE102017128572B4 (de) Verbrennungsmotor mit Drehventilen für den Gaswechsel
DE102007043674B4 (de) Spiralverdichter mit Doppelspirale
DE102004053564B4 (de) Kompressor
DE2000375A1 (de) Gaspumpe- bzw.-verdichter
DE3218255A1 (de) Anordnung zum abdichten von annaehernd geradlinig hin- und herbeweglichen kolbenstangen einer zweitakt-brennkraftmaschine
DE102015016314A1 (de) Kolbenpumpe
AT511859B1 (de) Motorkolben und motorzylinder
DE102019205824A1 (de) Pumpe, insbesondere Ölpumpe für ein Getriebe
DE10310183A1 (de) Mehrkreis-Radialkolbenpumpe
EP1612421B1 (fr) Compresseur à basse pression
WO2008022989A1 (fr) Pompe à fluide, comprenant une commande à manivelle avec des bielles monobloc, et son procédé de montage

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: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

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: 20100911