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WO2001036789A1 - Dispositif a piston rotatif - Google Patents

Dispositif a piston rotatif Download PDF

Info

Publication number
WO2001036789A1
WO2001036789A1 PCT/EP2000/011066 EP0011066W WO0136789A1 WO 2001036789 A1 WO2001036789 A1 WO 2001036789A1 EP 0011066 W EP0011066 W EP 0011066W WO 0136789 A1 WO0136789 A1 WO 0136789A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotary piston
housing
rotor
eccentric
piston
Prior art date
Application number
PCT/EP2000/011066
Other languages
German (de)
English (en)
Inventor
Michael Kresin
Original Assignee
Corporate Decision 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 Corporate Decision Gmbh filed Critical Corporate Decision Gmbh
Publication of WO2001036789A1 publication Critical patent/WO2001036789A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B57/00—Internal-combustion aspects of rotary engines in which the combusted gases displace one or more reciprocating pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B13/00—Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion
    • F01B13/02—Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion with one cylinder only

Definitions

  • the invention relates to a rotary piston device according to the preamble of claim 1.
  • Devices of this type in which a rotor and a rotary piston rotate in a housing, the rotary piston or elements connected to it additionally performing a stroke movement, are known in principle and are known as pumps or motor Drives used, but have a large number of sliding parts in their storage and are therefore subject to high wear.
  • a generic rotary piston device is described in DE-OS 2 010 689, in which the rotary piston executes alternating stroke movements during rotation within the rotor by an eccentric and thereby changes the volume of delivery spaces formed between it and the rotor. Because of the size relationships and arrangement of the eccentric, slot-shaped bearing and eccentricity realized there, the inner wall of the slot-shaped bearing slides frictionally on the outer circumference of the eccentric during the lifting movement, which leads to high wear and susceptibility to maintenance.
  • the invention is therefore concerned with the problem of creating a rotary piston device which can be operated with little wear.
  • a rotary piston device with the features of claim 1.
  • the special design in which the outer circumference of the eccentric just touches the rotor axis and the slot-shaped bearing is slightly wider and at least twice as long as the eccentric diameter, ensures that the inner wall of the slot-shaped bearing during the rotation and stroke movement of the piston on the Exclusively eccentric rolls and no sliding or moving takes place.
  • the eccentricity i.e. the distance of the eccentric center from the rotor axis, exactly half of the eccentric diameter.
  • the point of contact and pressure between the fixed eccentric and the inner wall of the slot-shaped bearing of the rotary piston describes a circle in a complete revolution of the central shaft in generic rotary piston devices, which forms the guide curve of a hypocycloid.
  • the hypocycloid degenerates into a diameter of the guide circle, ie into a line.
  • the respective contact point between the eccentric and the inner wall of the slot-shaped bearing during a rotor revolution describes a circle which corresponds exactly to twice the eccentric diameter in the device according to the invention.
  • the translational movement of the rotary piston relative to the rotor is accompanied by a simple rolling of the inner wall of the elongated hole-shaped bearing of the rotary piston on the eccentric.
  • the eccentric and the slot-shaped bearing thus form a roller bearing, through which the piston forces are transmitted by simply rolling on the eccentric. Wear on this bearing is minimized because there are no sliding friction components.
  • the rotary piston system according to the invention can therefore consist of only three parts, namely the housing, the rotor and the rotary piston. Since no additional bearing is used, it is also possible to build the rotary piston device according to the invention in extremely small dimensions, which expands its possible areas of application. It is suitable both as a pump, for example vacuum pump, compressor or hydraulic pump, and for use as an engine, such as as a hydraulic motor, internal combustion engine or other expansion machine.
  • FIG. 1 shows the individual parts of a rotary piston device according to the invention in an exploded view
  • FIG. 2 shows a top view of the assembled rotary piston device from FIG. 1, FIG.
  • Fig. 4 is a section along the line V - V in Fig. 2 and 5 a - f a section along the line VI - VI in FIG. 4 in different rotational positions of the device.
  • FIG. 1 shows the basic elements from which the rotary piston device according to the invention is composed.
  • This has a housing body 1 and a cover 2, which together form the housing of the device.
  • a rotor 3 is rotatably arranged in the housing, for which purpose it is firmly connected to a central shaft 4 which, when assembled, protrudes from the housing.
  • the central shaft 4 is used, for example, as a pump with a drive, not shown, or when used as an engine, e.g. Internal combustion engine, connected to an output.
  • a rotary piston 5 is arranged within the rotor 3 in such a way that it also rotates when the rotor 3 rotates, but can additionally perform a lifting movement. This lifting movement of the rotary piston 5 is initiated by an eccentric 6 fixed to the housing, which is attached to the cover 2 eccentrically to the axis of rotation of the rotor 3 and engages in a slot-shaped bearing recess 7 of the rotary piston 5.
  • the eccentric has a circular outer circumference 8, which the rotor axis 9 just touches.
  • the length 10 of the slot-shaped bearing 7 corresponds to twice the eccentric diameter 11 or is slightly larger and the width 12 of the slot-shaped bearing 7 is slightly larger than the eccentric diameter 11.
  • the eccentric 6 can be moved on the housing and can be locked in various positions.
  • the eccentric 6 is attached to the cover 2 of the housing, so that by repositioning the cover 2 in a position rotated by 180 ° to the normal position, the delivery flow of the rotary piston device is reversed without the direction of rotation of the central shaft 4 having to be changed.
  • the rotor 3 in the illustrated embodiment consists of two opposing cylinder segment-shaped piston guides 13, the outer surfaces 14 of which are rounded with the same or a slightly smaller radius than the housing inner wall 15.
  • the piston guides 13 are rigidly connected to one another and to the central shaft 4 via a plate 16.
  • This embodiment of the rotor 3 is mechanically particularly simple to manufacture, preferably in one piece, and, despite the low weight of the material, is entirely sufficient to carry the rotary piston 5.
  • the radii of the outer surfaces 14 of the piston guides 13 and the inner wall 15 of the housing are matched to one another in such a way that the rotor 3 can rotate in the housing in a manner which is free of contact and wear.
  • FIG. 5 shows the rotary piston device in various rotary positions during half a revolution of the rotor 3, FIG. 5a the position at an angle of rotation of 0 ° and 180 °, FIG. 5b an angle of rotation of 30 °, FIG. 5c an angle of rotation of 60 °, FIG. 5d an angle of rotation of 90 °, FIG. 5e an angle of rotation of 120 ° and FIG. 5f an angle of rotation of 150 °.
  • the rotary piston 5 is of rectangular cross section with two plane-parallel sliding surfaces 18 which slide against corresponding, likewise plane-parallel guide surfaces 19 of the piston guides 13.
  • the rectangular cross section of the rotary piston 5 can also have any other cross-sectional shapes.
  • the corners can be rounded, whereby the curves can be so strong that they touch on the narrow sides.
  • piston rings for sealing.
  • the piston can be designed as a round piston with a circular cross section.
  • piston rings are used instead of piston strips.
  • the embodiment as a round-bottom flask can advantageously be manufactured particularly precisely.
  • much larger dimensions can be accepted with the same delivery rate.
  • the piston guides 13 in the embodiment shown are dimensioned such that, in the course of a complete revolution of the rotor 3, the feed opening 20 and the discharge opening 21, which can have hose connections or pipe connection flanges, in exactly two positions, namely cover those shown in Fig. 6a at an angle of rotation of 0 ° and 180 °.
  • one piston guide 13 opens the discharge opening 21, ie the pressure side, as soon as the supply opening 20 on the suction side is closed by the other piston guide 13. In the case of a largely incompressible delivery medium, this avoids compression in the closed displacement, which would be associated with very high pressures. If the piston guides 13 were larger than the feed and discharge openings 20, 21, a rotation starting from FIG.
  • the piston shape selected in the illustrated embodiment with two convexly curved outer surfaces 22 lying opposite one another in the direction of translation movement, the radii of which essentially correspond to that of the inner wall 15 of the housing, is desirable with regard to the most complete emptying of the delivery spaces 17.
  • the outer surfaces 22 can also be straight, but then the conveying spaces 17 are not completely emptied.
  • the eccentric 6 of the rotary piston device can have a feed line, for example via a central bore and a lubricating nipple for lubricant for lubricating the eccentric wall and the rotary piston 5. Coolant can also be guided past the stressed surfaces of the rotary piston 5 via supply and discharge lines. If there are appropriate openings in the rotary piston 5, lubrication of the sliding surfaces 18 of the rotary piston 5 from the inside of the rotary piston is also possible.
  • the rotary lobe device according to the invention can preferably also be used as an internal combustion engine, it being possible for 15 troughs or depressions to be provided in the inner wall of the housing for receiving, for example, spark plugs or injection nozzles.
  • the openings 20, 21 do not have to have additional recesses in the housing inner wall 15 that deviate from the circular shape.
  • the rotary piston 5 can, however, be provided with a recess on at least one of its outer surfaces 22 forms a combustion chamber between the rotary piston 5 and the housing inner wall 15.
  • Such recesses or combustion chambers are preferably provided on both opposite outer surfaces 22 of the rotary piston 5.
  • the rotary piston device is operated, for example, as a 2-stroke diesel engine, one of the two openings 20, 21 can be omitted. Then there is only one opening in the housing inner wall 15 through which the charge exchange takes place.
  • a motor designed as a rotary piston device according to the invention runs very low in vibration due to the corresponding arrangement of rotary piston 5, bearing 7 and eccentric 6.
  • the rotary lobe device described is characterized in that it is low-wear, valve-less, self-priming, safe to run dry and can be installed in any position. It has a high specific delivery rate with a small size combined with the advantages of a piston system. In addition, the simple construction of a few individual parts enables the device to be installed without problems, in particular the piston, and, if necessary, easy replacement of individual elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention concerne un dispositif à piston rotatif doté d'un carter comportant un corps de carter (1) présentant une paroi intérieure dont le pourtour (15) est pratiquement circulaire. Dans ce carter se trouve un piston rotatif (5) guidé en translation à l'intérieur d'un rotor (3) relié à une unité d'entraînement ou de sortie et fixé à un arbre central (4) de façon à tourner autour de son axe (9). Ledit piston rotatif forme une chambre de refoulement (17) à géométrie variable et limitée au moins en partie par lui et le rotor (3) et il dispose d'un palier (7) sous forme d'un évidement allongé, dans lequel s'engage un excentrique (6) fixé au carter et dont la paroi extérieure est circulaire. L'invention est caractérisée en ce que la paroi extérieure de l'excentrique (6) est en contact avec l'axe du rotor (9), la longueur (10) du palier (7) en forme d'évidement allongé du piston rotatif (5) représente au moins le double du diamètre de l excentrique (11) et la largeur (12) du palier (7) en forme d'évidement allongé du piston rotatif (5) est légèrement plus importante que le diamètre de l excentrique (11), de sorte que la paroi intérieure du palier (7) en forme d'évidement allongé tourne sur l'excentrique (6) pendant le mouvement de rotation et de translation. Ce dispositif à piston rotatif peut être utilisé en tant que pompe ou moteur.
PCT/EP2000/011066 1999-11-12 2000-11-09 Dispositif a piston rotatif WO2001036789A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19954728.9 1999-11-12
DE1999154728 DE19954728A1 (de) 1999-11-12 1999-11-12 Drehkolbenvorrichtung

Publications (1)

Publication Number Publication Date
WO2001036789A1 true WO2001036789A1 (fr) 2001-05-25

Family

ID=7928989

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/011066 WO2001036789A1 (fr) 1999-11-12 2000-11-09 Dispositif a piston rotatif

Country Status (2)

Country Link
DE (1) DE19954728A1 (fr)
WO (1) WO2001036789A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009007474A1 (fr) * 2007-07-09 2009-01-15 Perez Rayo Jose Antonio Système d'entraînement de piston et cylindre rotatifs
CZ300741B6 (cs) * 2006-01-31 2009-07-29 Drobil@Jan Spalovací motor bez klikového mechanizmu
CZ303048B6 (cs) * 2007-03-14 2012-03-14 Drobil@Jan Spalovací motor
WO2015160280A1 (fr) * 2014-04-07 2015-10-22 Юрий Викторович МЫСКИН Convertisseur réversible à turbine et pistons fonctionnant par rotation et par compression
EP3333427A4 (fr) * 2015-08-07 2018-07-25 Gree Green Refrigeration Technology Center Co. Ltd. of Zhuhai Machine fluidique, échangeur de chaleur et procédé de commande d'une machine fluidique
WO2019041681A1 (fr) * 2017-08-29 2019-03-07 海斯比得（武汉）石油科技有限公司 Pompe volumétrique et dispositif de production d'huile
CN110985380A (zh) * 2019-11-22 2020-04-10 珠海格力电器股份有限公司 泵体组件、流体机械及换热设备
US10851781B2 (en) * 2016-02-16 2020-12-01 Gree Green Refrigeration Technology Center Co., Ltd. Of Zhuhai Compressor pump structure and compressor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016204487B4 (de) 2016-03-17 2017-12-07 Gardner Denver Thomas Gmbh Membranpumpe
DE102017211775B3 (de) 2017-07-10 2018-08-16 Gardner Denver Thomas Gmbh Kolbenpumpe mit einem angetriebenen, rotierenden Pumpenkopf und einem darin oszillierenden Kolben

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1921454A1 (de) * 1969-04-26 1970-11-12 Robert Kolb Pumpe oder Motor
DE2010689A1 (de) 1970-03-06 1971-09-16 Rosenthal, Gerd, 5600 Wuppertal Barmen Rotationskolbenmotor
US4030458A (en) * 1973-07-30 1977-06-21 August Uno Lamm Rotary piston engine
US4649801A (en) * 1985-04-08 1987-03-17 Johnson Neil M Compound displacement mechanism for simplified motors and compressors
US5184547A (en) * 1990-04-25 1993-02-09 Heinz Bergmann Equipment for compacting compressible wastes
WO1996033342A1 (fr) * 1995-04-20 1996-10-24 Bergische Metallwarenfabrik, Dillenberg & Co. Moteur a combustion interne a piston avec injection de carburant

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3941256C1 (en) * 1989-12-14 1991-05-02 Fritz 6000 Frankfurt De Opel High compression rotary piston engine - has circulating piston drum with three pistons in circular surrounding casing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1921454A1 (de) * 1969-04-26 1970-11-12 Robert Kolb Pumpe oder Motor
DE2010689A1 (de) 1970-03-06 1971-09-16 Rosenthal, Gerd, 5600 Wuppertal Barmen Rotationskolbenmotor
US4030458A (en) * 1973-07-30 1977-06-21 August Uno Lamm Rotary piston engine
US4649801A (en) * 1985-04-08 1987-03-17 Johnson Neil M Compound displacement mechanism for simplified motors and compressors
US5184547A (en) * 1990-04-25 1993-02-09 Heinz Bergmann Equipment for compacting compressible wastes
WO1996033342A1 (fr) * 1995-04-20 1996-10-24 Bergische Metallwarenfabrik, Dillenberg & Co. Moteur a combustion interne a piston avec injection de carburant

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ300741B6 (cs) * 2006-01-31 2009-07-29 Drobil@Jan Spalovací motor bez klikového mechanizmu
CZ303048B6 (cs) * 2007-03-14 2012-03-14 Drobil@Jan Spalovací motor
WO2009007474A1 (fr) * 2007-07-09 2009-01-15 Perez Rayo Jose Antonio Système d'entraînement de piston et cylindre rotatifs
WO2015160280A1 (fr) * 2014-04-07 2015-10-22 Юрий Викторович МЫСКИН Convertisseur réversible à turbine et pistons fonctionnant par rotation et par compression
EP3333427A4 (fr) * 2015-08-07 2018-07-25 Gree Green Refrigeration Technology Center Co. Ltd. of Zhuhai Machine fluidique, échangeur de chaleur et procédé de commande d'une machine fluidique
JP2018529041A (ja) * 2015-08-07 2018-10-04 グリー グリーン リフリジレーション テクノロジー センター カンパニー リミテッド オブ ズーハイＧｒｅｅ Ｇｒｅｅｎ Ｒｅｆｒｉｇｅｒａｔｉｏｎ Ｔｅｃｈｎｏｌｏｇｙ Ｃｅｎｔｅｒ Ｃｏ．， Ｌｔｄ． Ｏｆ Ｚｈｕｈａｉ 流体機械、熱交換装置及び流体機械の運転方法
US10851781B2 (en) * 2016-02-16 2020-12-01 Gree Green Refrigeration Technology Center Co., Ltd. Of Zhuhai Compressor pump structure and compressor
WO2019041681A1 (fr) * 2017-08-29 2019-03-07 海斯比得（武汉）石油科技有限公司 Pompe volumétrique et dispositif de production d'huile
CN110985380A (zh) * 2019-11-22 2020-04-10 珠海格力电器股份有限公司 泵体组件、流体机械及换热设备

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Publication number Publication date
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