WO2008095606A1 - Moteur à pistons alternatifs - Google Patents

Moteur à pistons alternatifs Download PDF

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Publication number
WO2008095606A1
WO2008095606A1 PCT/EP2008/000512 EP2008000512W WO2008095606A1 WO 2008095606 A1 WO2008095606 A1 WO 2008095606A1 EP 2008000512 W EP2008000512 W EP 2008000512W WO 2008095606 A1 WO2008095606 A1 WO 2008095606A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder
reciprocating
reciprocating piston
piston
cylinder chamber
Prior art date
Application number
PCT/EP2008/000512
Other languages
German (de)
English (en)
Inventor
Pedro Gomez
Jan Hinrichs
Tilo SCHÄFER
Original Assignee
Ixetic Mac 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 Ixetic Mac Gmbh filed Critical Ixetic Mac Gmbh
Priority to DE112008000184T priority Critical patent/DE112008000184A5/de
Publication of WO2008095606A1 publication Critical patent/WO2008095606A1/fr

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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • F04B27/1045—Cylinders
    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/0873—Component parts, e.g. sealings; Manufacturing or assembly thereof
    • F04B27/0878—Pistons

Definitions

  • the invention relates to a reciprocating piston engine, in particular a Schwenkring- or swash plate compressor, with pistons, which are received in cylinder chambers movable back and forth and driven by a drive device which is adjustable in order to change the flow rate.
  • Such a reciprocating engine is known from international patent application WO 99/24715.
  • the drive device of the known reciprocating engine comprises a driven by a machine shaft swash plate whose inclination is adjustable to the machine shaft.
  • the object of the invention is, for example, resulting from disturbing tilting forces Verstellhysterese in a reciprocating engine, in particular a Schwenkring- or swash plate compressor, with pistons, which are reciprocally accommodated in cylinder chambers and driven by a drive device which is adjustable to the flow rate to change, to reduce.
  • the object is in a reciprocating piston engine, in particular a Schwenkring- or swash plate compressor, with pistons, which are received in cylinder chambers movable back and forth and driven by a drive device which is adjustable to change the flow rate, achieved in that the reciprocating engine at least one Change or changes, which serves or serve to specifically disturb a uniform pressure force curve during operation of the reciprocating engine, to worry and / or interrupt.
  • a targeted unrest or irregularity is introduced into the drive device in order to purposefully interrupt the uniform pressure force curve required for acoustic reasons and to allow easier adjustment of the drive device during a small time interval in which reduced forces act.
  • a preferred embodiment of the reciprocating engine is characterized in that the change or changes to at least one piston and / or at least one cylinder space is or are provided. The changes are exactly coordinated.
  • a further preferred embodiment of the reciprocating engine is characterized in that the reciprocating engine has at least one change or changes, which serves or purpose to disturb a uniform Saugtigyakkraftverlauf and / or Kompressionstikkraftverlauf targeted during operation of the reciprocating engine, to worry and / or interrupt.
  • the Saug réellekraftverlauf and the compression pressure force curve are influenced by the drive device.
  • a further preferred exemplary embodiment of the reciprocating piston engine is characterized in that the reciprocating piston engine has at least one change or change which serves or purposefully raises or lowers the suction pressure in at least one cylinder space relative to the suction pressure in at least one other cylinder space and / or the remaining cylinder spaces ,
  • the changes are preferably provided on the cylinder wall bounding the cylinder space or on the piston arranged therein.
  • the reciprocating piston engine has at least one change or change which serves or purposefully raises or lowers the compression pressure in at least one cylinder space relative to the compression pressure in at least one other cylinder space and / or the remaining cylinder spaces ,
  • the changes are preferably provided on the cylinder wall bounding the cylinder space or on the piston arranged therein.
  • a further preferred embodiment of the reciprocating engine is characterized in that the reciprocating engine comprises a valve plate which limits the cylinder spaces and has suction holes which are associated with the individual cylinder chambers and of which at least one smaller or smaller compared to at least one other suction bore o- the other suction holes is.
  • the suction holes are closed or closed, for example by spring tongues.
  • a further preferred embodiment of the reciprocating engine is characterized in that at least one cylinder chamber is changed so that the changed cylinder chamber has a damaged volume, which is increased or decreased compared to at least one other cylinder chamber and / or the other cylinder chambers. As a result, the pressure force curve is influenced during operation of the reciprocating engine.
  • a further preferred embodiment of the reciprocating piston engine is characterized in that the at least one cylinder chamber has a recess which at least one other cylinder space and / or the other cylinder spaces or not in the same shape or size or have.
  • the recess is, for example, a notch in an edge region of the cylinder chamber facing the valve plate.
  • a further preferred embodiment of the reciprocating engine is characterized in that at least one piston is changed so that the cylinder chamber in which the piston is arranged, has a damaged volume, which is increased or decreased compared to at least one other cylinder chamber or the other cylinder chambers.
  • the pressure force curve is influenced during operation of the reciprocating engine.
  • a further preferred embodiment of the reciprocating engine is characterized in that the at least one piston has a recess which at least one other piston or the other piston or not in the same shape or size or have.
  • the recess is, for example, a blind hole in the piston.
  • a further preferred embodiment of the reciprocating engine is characterized in that the cylinder chambers, in particular cylinder bores, are distributed unevenly over the circumference or have different diameters.
  • the cylinder chambers are distributed unevenly over the circumference or have different diameters.
  • an uneven flow of forces can be achieved.
  • at least one cylinder space can be de-axed in the tangential or radial direction.
  • Figure 1 is an axial section through a conventional reciprocating engine ' ;
  • Figure 2 is a perspective view of a valve plate of an inventive
  • Figure 3 is a perspective view of a housing body with cylinder chambers of a reciprocating piston engine according to the invention.
  • Figure 4 shows a piston of a reciprocating piston engine according to the invention in longitudinal section
  • Figure 5 shows a housing body with cylinder chambers in the plan view according to another embodiment.
  • FIG. 1 shows an axial section of a conventional reciprocating piston engine as disclosed in international patent application WO 99/24715.
  • the reciprocating engine 1 has, for example seven pistons 2, which are arranged side by side in the circumferential direction of the machine and are guided in cylinder bores 3 of the machine housing.
  • the lifting movement of the piston 2 is effected by the engagement of an annular disc 6 extending obliquely to the machine shaft 5 into an engagement chamber 7, which is provided adjacent to the closed cavity 8 of the piston 2.
  • ball segments 11, 12 are provided on both sides between it and the spherically curved inner wall 10 of the engagement chamber 7, so that the swash plate 6 slides between them during its circulation.
  • the drive transmission from the machine shaft 5 to the annular disk 6 takes place by means of a drive bolt 13 which is fastened in the machine shaft 5 and whose spherical head 15, for example, engages in a radial bore 16 of the annular disk 6.
  • the position of the driver head 15 is selected so that its center 17 coincides with that of the ball of the body. gel segments 11, 12 matches.
  • this center is located on a circular line that connects the geometric axes of the seven pistons together and further on a circular line that connects the centers of the spherical shape of the joint body 11, 12 of the piston 2. In this way, the dead center position of the piston 2 visible in the upper area of the representation of FIG. 1 is exactly determined and a minimal harmful space is ensured.
  • the head shape of the free Mit supportiveendes allows the change in the inclination of the annular disc 6 by the driver head 15 forms a bearing body for the stroke of the piston 2 changing pivotal movement of the annular disc 6.
  • the shape of the engaging space 16 and / or the head 15 of the driver 13 can be chosen differently to achieve a different kinematics.
  • a valve plate 40 defines the cylinder chambers in which pistons are accommodated.
  • valve plate 40 is shown in perspective according to an embodiment of the invention.
  • the valve plate 40 has the shape of a circular disc in which a plurality of through holes are recessed.
  • the through holes are holes that are evenly distributed on two concentric pitch circles of different diameters.
  • the holes on the radially outer circle are suction holes 41, 42, 43.
  • the suction holes 41 to 43 allow the passage of a medium when the associated piston perform a suction stroke in their cylinder chambers.
  • the unspecified pressure holes allow the passage of compressed medium when the piston perform a pressure stroke.
  • at least one of the suction bores 43 is made slightly smaller than the remaining suction bores 41, 42.
  • a housing body 50 of a reciprocating piston engine according to the invention is shown in perspective.
  • the housing body 50 comprises five cylinder chambers 51 to 55, which are arranged distributed uniformly on a pitch circle.
  • the cylinder chambers 51 to 55 are bores. Therefore, the cylinder chambers 51 to 55 are also referred to as cylinder bores.
  • Each cylinder chamber 51 to 55 serves to receive a piston (not shown in FIG. 3).
  • the cylinder chambers 51, 53, 54, 55 each have the same volume.
  • the volume of the cylinder chamber 52 is selectively increased by a recess 58. As a result, the harmful volume or dead volume of the cylinder chamber 52 is artificially increased compared to the other cylinder chambers.
  • the piston 60 comprises a piston main body 61, which has substantially the shape of a right circular cylinder. At one end of the piston body 61, a substantially U-shaped holder 64 is attached. The holder 64 serves to couple the piston 60 with a drive device (not shown in FIG. 4), in particular a swivel disk. In the region of the other end of the piston main body 61, two piston seals 66, 67 are indicated, which are arranged in annular grooves of the piston main body 61.
  • the piston 60 has a central recess 70 at its end facing away from the holder 64.
  • the recess 70 is designed as a blind hole and serves to artificially increase the harmful volume of a cylinder chamber in which the piston 60 is arranged.
  • FIG. 5 shows a housing body 80 of a reciprocating piston engine according to the invention in plan view.
  • the housing body 80 includes five cylinder chambers 81 to 85, which are arranged distributed uniformly on a pitch circle 86.
  • the cylinder chambers 81 to 85 are bores. Therefore, the cylinder chambers 81 to 85 are also referred to as cylinder bores.
  • Each cylinder chamber 81 to 85 serves to receive a piston.
  • the cylinder chambers 81 to 85 each have the same volume.
  • An arrow 91 indicates that the cylinder bore 82 can be de-axed in the tangential direction.
  • By a further arrow 92 it is indicated that the cylinder bore 82 can also be dismantled in the radial direction.
  • De-Ax mich means that the axis of the cylinder bore 82 is selectively displaced away in a tangential or radial direction of the pitch circle 86. This will change the stroke of the associated piston. When displaced radially outward, the stroke increases. With a displacement radially inward, the stroke decreases. Due to the targeted de-Ax réelle of at least one cylinder chamber an otherwise uniform pressure force curve is specifically disturbed or disturbed during operation of the reciprocating engine. LIST OF REFERENCES
  • Machine shaft 82 Cylinder space

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

Abstract

L'invention concerne un moteur à pistons alternatifs, en particulier un compresseur à bague pivotante ou à plateau pivotant, comprenant des pistons qui sont logés, animés d'un mouvement alternatif, dans des espaces cylindriques et qui sont entraînés par un dispositif d'entraînement, ledit moteur étant réglable en vue de modifier son rendement. A cet effet, l'invention est caractérisée en ce qu'au moins un espace cylindrique et/ou ses critères techniques présentent une modification, ou des modifications, par rapport aux autres espaces cylindriques qui servent à perturber, à rendre mouvementé et/ou à interrompre de manière ciblée, une variation uniforme de force de pression lors du fonctionnement dudit moteur à pistons alternatifs.
PCT/EP2008/000512 2007-02-07 2008-01-24 Moteur à pistons alternatifs WO2008095606A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112008000184T DE112008000184A5 (de) 2007-02-07 2008-01-24 Hubkolbenmaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007007302.1 2007-02-07
DE102007007302 2007-02-07

Publications (1)

Publication Number Publication Date
WO2008095606A1 true WO2008095606A1 (fr) 2008-08-14

Family

ID=39299725

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/000512 WO2008095606A1 (fr) 2007-02-07 2008-01-24 Moteur à pistons alternatifs

Country Status (2)

Country Link
DE (1) DE112008000184A5 (fr)
WO (1) WO2008095606A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0301519A2 (fr) * 1987-07-28 1989-02-01 Sanden Corporation Compresseur avec mécanisme à déplacement variable
WO1999024715A1 (fr) * 1997-11-11 1999-05-20 Obrist Engineering Gmbh Moteur a pistons avec entrainement par disque de verrouillage
DE10307555A1 (de) * 2002-02-21 2003-09-11 Sanden Corp Kompressor
EP1457676A2 (fr) * 1999-08-04 2004-09-15 Kabushiki Kaisha Toyota Jidoshokki Robinet de régulation et procédé de régulation d'un système de conditionnement d'air

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0301519A2 (fr) * 1987-07-28 1989-02-01 Sanden Corporation Compresseur avec mécanisme à déplacement variable
WO1999024715A1 (fr) * 1997-11-11 1999-05-20 Obrist Engineering Gmbh Moteur a pistons avec entrainement par disque de verrouillage
EP1457676A2 (fr) * 1999-08-04 2004-09-15 Kabushiki Kaisha Toyota Jidoshokki Robinet de régulation et procédé de régulation d'un système de conditionnement d'air
DE10307555A1 (de) * 2002-02-21 2003-09-11 Sanden Corp Kompressor

Also Published As

Publication number Publication date
DE112008000184A5 (de) 2010-02-25

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