US20070253851A1 - Leakage Loss Flow Control - Google Patents

Leakage Loss Flow Control Download PDF

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Publication number
US20070253851A1
US20070253851A1 US11/597,436 US59743605A US2007253851A1 US 20070253851 A1 US20070253851 A1 US 20070253851A1 US 59743605 A US59743605 A US 59743605A US 2007253851 A1 US2007253851 A1 US 2007253851A1
Authority
US
United States
Prior art keywords
rotor
driven rotor
rotary piston
working chambers
piston machine
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.)
Abandoned
Application number
US11/597,436
Other languages
English (en)
Inventor
Felix Arnold
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.)
Robert Bosch GmbH
Cor Pumps and Compressors AG
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to COR PUMPS + COMPRESSORS AG reassignment COR PUMPS + COMPRESSORS AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ARNOLD, FELIX
Publication of US20070253851A1 publication Critical patent/US20070253851A1/en
Assigned to ROBERT BOSCH GMBH reassignment ROBERT BOSCH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ARNOLD, FELIX
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C3/00—Rotary-piston machines or engines with non-parallel axes of movement of co-operating members
    • F01C3/06—Rotary-piston machines or engines with non-parallel axes of movement of co-operating members the axes being arranged otherwise than at an angle of 90 degrees
    • F01C3/08—Rotary-piston machines or engines with non-parallel axes of movement of co-operating members the axes being arranged otherwise than at an angle of 90 degrees of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • F04C2230/601—Adjustment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/50—Bearings

Definitions

  • the invention starts out from a rotating piston machine, which can operate as a pump, a compressor or an engine, of the type described in the main claim.
  • a rotating piston machine of the generic type German patent 42 41 320, European patent 1,005,604
  • a high leakproofness between the working chambers is aimed for also by means of the configuration of the teeth, in order to keep the leakage as small as possible from one working chamber to the adjacent working chamber over the flanks with line contact between driving a driving rotor and a driven rotor and vice versa.
  • the crests of the tooth of one rotor proceed linearly at the flanks of the other rotor, the course of the working surface of which is cycloidal.
  • the inventive rotating piston machine with the characterizing distinguishing features of the main claim has the advantage that the energy, taken up by the rotating piston machine, corresponds directly to the power output of the same.
  • a leakage loss of such a machine, which can never be avoided completely, has become a quantity control or loss quantity control, which is brought about by a selective change in the gap width.
  • a further advantage consists therein that foaming, which may arise, for example, when controlling the return channel, is largely prevented, for example, when fuel or oil is pumped.
  • the driven rotor may be swiveled within a spherical bearing, in order to change the axial angle between the axes of rotation by these means, which may lead correspondingly to a change in the amount pumped up to a zero amount pumped. It is a disadvantage of such a construction that the costs of construction are considerably higher and the output capability is more limited. Moreover, above all, the sealing of the working chambers from the adjusting device is a disadvantage.
  • At least the axially displaceable rotor is guided axially and radially in a corresponding, cylindrical control space of the machine housing.
  • the displaceable rotor moreover, is disposed equiaxially with the cylindrical control space.
  • the adjusting force is arbitrarily controllable and works with hydraulic, gaseous and/or electrical means. It is of decisive importance that forces on the back of the rotor counteract the pressures in the working chambers, in order to control the desired axial displacement of the rotor and, with that, the leakage between the working chambers.
  • the chamber which is bounded by the back of the rotor, is closed off pressure tight in order to produce an adjusting force by means of a liquid or gaseous medium.
  • the medium pumped generates the adjusting force.
  • the delivery pressure of the machine can be used directly to regulate the adjusting force.
  • one of the rotors (shaft rotor) is constructed spherically on the side averted from the working chamber and supported in a correspondingly spherical recess in the housing.
  • the radial support of the rotor can cut into this sphere in order to fix the axial axis of rotation of the rotor.
  • a spherical surface at a rotor there is, at the rotors in the middle region of the front side centrally a spherical surface at a rotor.
  • This spherical surface is supported on a corresponding spherical recess at the other rotor and forms the boundary of the working chambers radially to the inside.
  • the embodiment is a fuel delivery pump, which is shown in longitudinal section.
  • An inlay 2 is disposed in a housing 1 so that it cannot twist.
  • a counter rotor 3 which interacts with a shaft rotor 4 , which is driven from outside the pump, is disposed rotatably and radially guided and axially displaceably in the housing 1 .
  • the shaft rotor 4 and the counter rotor 3 have meshing gearings, through which working chambers are separated from one another in a known manner and over which the counter rotor 3 is driven by the shaft rotor 4 .
  • One of the two front gearings has a cycloidal cross section, in order to form by these means a linear connection between the gear crests of the other part and this cycloidal surface.
  • suction kidney suction kidney
  • pressure kidney pressure kidney
  • the counter rotor 3 is disposed rotatably in a plain bearing bush 5 .
  • a plain bearing shaft 6 is disposed, which is supported radially and axially in the plain bearing bush 5 and, together with the counter rotor 3 , can be shifted axially within the plain bearing bush 5 .
  • the shaft rotor 4 is also supported radially and axially in a plain bearing 7 .
  • the hat-shaped end of a drive shaft 8 protrudes between the shaft rotor 4 and the plain bearing bush 7 and the shaft rotor 4 dips with a corresponding cylindrical section into this hat-shaped formation.
  • a spring 10 is disposed, which, on the one hand, carries along the shaft rotor 4 as the shaft 8 rotates and, on the other, puts the shaft rotor 4 under a load in the direction of the counter rotor 3 .
  • the housing 1 On the side averted from the shaft 8 , the housing 1 is closed off by lids 11 and 12 .
  • the lid 11 on the inside is supported on, the one hand, at the plain bearing bush 5 and, on the other, at the lid 12 on the outside, which functions as the actual closing part of the housing 1 of the pump and is secured in its axial position towards the outside by a retaining ring 9 .
  • the counter rotor 3 is displaceable axially in the direction of its axis of rotation.
  • this displacement can be accomplished with appropriate means, the pressure, developing in the working chambers, forming a corresponding adjusting force, which affects the counter rotor 3 .
  • This adjusting force acts counter to a restoring force, which is formed in the example shown, by liquid, and acts on the section of the counter rotor, which dips into the plain bearing bush 5 and is averted from the working chambers.
  • a connection (not shown) between these chambers, the forces having to be matched to one another, especially because of the surfaces acted upon.
  • An insert 13 is disposed in the inlay 2 in the area of the shaft 8 so as to form a seal. It holds the plain bearing 7 axially and, furthermore, accommodates a plain bearing seal 17 , in which the shaft 8 is disposed, so that it can rotate. Moreover, the shaft 8 is supported by a ball bearing 18 in this inlay insert 13 . O rings 16 provide the necessary seal between this inlay insert 13 and the inlay 2 , as well as between the inlay 2 and the housing 1 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)
US11/597,436 2004-05-25 2005-05-19 Leakage Loss Flow Control Abandoned US20070253851A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004026048A DE102004026048A1 (de) 2004-05-25 2004-05-25 Spaltverluststromsteuerung
DE102004026048.6 2004-05-25
PCT/DE2005/000934 WO2005116403A1 (fr) 2004-05-25 2005-05-19 Commande du courant de fuite d'intervalle d'une machine a engrenages

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2005/000934 A-371-Of-International WO2005116403A1 (fr) 2004-05-25 2005-05-19 Commande du courant de fuite d'intervalle d'une machine a engrenages

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/661,959 Continuation-In-Part US8834140B2 (en) 2004-05-25 2010-03-26 Leakage loss flow control and associated media flow delivery assembly

Publications (1)

Publication Number Publication Date
US20070253851A1 true US20070253851A1 (en) 2007-11-01

Family

ID=34971452

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/597,436 Abandoned US20070253851A1 (en) 2004-05-25 2005-05-19 Leakage Loss Flow Control

Country Status (6)

Country Link
US (1) US20070253851A1 (fr)
EP (1) EP1749145B1 (fr)
JP (1) JP5244385B2 (fr)
DE (1) DE102004026048A1 (fr)
ES (1) ES2425363T3 (fr)
WO (1) WO2005116403A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080219876A1 (en) * 2005-03-16 2008-09-11 Felix Arnold Rotary Piston Machine
US20100215531A1 (en) * 2007-08-31 2010-08-26 Felix Arnold Method for converting energy from compressed air into mechanical energy and compressed air motor therefor
US20100233000A1 (en) * 2004-05-25 2010-09-16 Felix Arnold Leakage loss flow control and associated media flow delivery assembly
US20110186158A1 (en) * 2008-10-02 2011-08-04 Robert Bosch Gmbh Delivery unit
US20110311351A1 (en) * 2010-06-17 2011-12-22 Curtis Patterson Shroud for rotary engine
CN103890401A (zh) * 2011-10-19 2014-06-25 罗伯特·博世有限公司 输送单元
US10975869B2 (en) 2017-12-13 2021-04-13 Exponential Technologies, Inc. Rotary fluid flow device
US11168683B2 (en) 2019-03-14 2021-11-09 Exponential Technologies, Inc. Pressure balancing system for a fluid pump

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008003240B4 (de) 2008-01-04 2024-02-15 Robert Bosch Gmbh Förderaggregat
DE102008023475A1 (de) 2008-05-14 2009-11-19 Robert Bosch Gmbh Hydromaschine
DE102008038625A1 (de) * 2008-08-12 2010-02-18 Cor Pumps + Compressors Ag Stirnzahnradpumpe
DE102020124825A1 (de) 2020-09-23 2022-03-24 Kolektor Group D.O.O. Motor-Pumpe-Einheit
DE102021103306A1 (de) 2021-02-12 2022-08-18 Kolektor Group D.O.O. Handgeführtes Druckflüssigkeitsgerät

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US32372A (en) * 1861-05-21 John jones
US1678050A (en) * 1926-06-07 1928-07-24 Kearney & Trecker Corp Adjustable fluid-control device
US2049775A (en) * 1934-10-13 1936-08-04 Frank E Holmes Fluid control device
US2501998A (en) * 1938-02-21 1950-03-28 Dutrey Andre Roto-volumetric pump
US5085187A (en) * 1991-03-11 1992-02-04 Chrysler Corporation Integral engine oil pump and pressure regulator
US5513969A (en) * 1991-12-09 1996-05-07 Arnold; Felix Rotary piston machine having engaging cycloidal gears
US20030113217A1 (en) * 2000-05-25 2003-06-19 Josef Bachmann Regulated pump
US20050175493A1 (en) * 2002-08-02 2005-08-11 Felix Arnold Rotary piston machines comprising a displaceable inner housing
US7275920B2 (en) * 2003-09-11 2007-10-02 Cor Pumps + Compressors Ag Rotary piston machine
US7299740B2 (en) * 2004-09-13 2007-11-27 Haldex Brake Corporation Reciprocating axial displacement device
US7390181B2 (en) * 2003-09-11 2008-06-24 Cor Pumps + Compressors Ag Rotating piston machine
US20080219876A1 (en) * 2005-03-16 2008-09-11 Felix Arnold Rotary Piston Machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH476212A (de) * 1966-06-24 1969-07-31 Schindler Werner Verdrängungspumpe
CH634126A5 (de) * 1978-06-23 1983-01-14 Burckhardt Ag Maschf Rotationskolbenmaschine mit einem mindestens teilweise kugelfoermigen innenraum.
DE2946304C2 (de) * 1979-11-16 1983-02-03 Wolfhart Dipl.-Phys. 8037 Olching Willimczik Drehkolbenartige Rotationskolbenmaschine
DE19837729A1 (de) * 1997-08-21 1999-05-20 Felix Arnold Drehkolbenmaschine
AT413140B (de) * 2003-03-28 2005-11-15 Tcg Unitech Ag Zahnradpumpe

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US32372A (en) * 1861-05-21 John jones
US1678050A (en) * 1926-06-07 1928-07-24 Kearney & Trecker Corp Adjustable fluid-control device
US2049775A (en) * 1934-10-13 1936-08-04 Frank E Holmes Fluid control device
US2501998A (en) * 1938-02-21 1950-03-28 Dutrey Andre Roto-volumetric pump
US5085187A (en) * 1991-03-11 1992-02-04 Chrysler Corporation Integral engine oil pump and pressure regulator
US5513969A (en) * 1991-12-09 1996-05-07 Arnold; Felix Rotary piston machine having engaging cycloidal gears
US20030113217A1 (en) * 2000-05-25 2003-06-19 Josef Bachmann Regulated pump
US20050175493A1 (en) * 2002-08-02 2005-08-11 Felix Arnold Rotary piston machines comprising a displaceable inner housing
US7318712B2 (en) * 2002-08-02 2008-01-15 Cor Pumps + Compressors Ag Rotary piston machines comprising a displaceable inner housing
US7275920B2 (en) * 2003-09-11 2007-10-02 Cor Pumps + Compressors Ag Rotary piston machine
US7390181B2 (en) * 2003-09-11 2008-06-24 Cor Pumps + Compressors Ag Rotating piston machine
US7299740B2 (en) * 2004-09-13 2007-11-27 Haldex Brake Corporation Reciprocating axial displacement device
US20080219876A1 (en) * 2005-03-16 2008-09-11 Felix Arnold Rotary Piston Machine

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8834140B2 (en) 2004-05-25 2014-09-16 Cor Pumps + Compressors Ag Leakage loss flow control and associated media flow delivery assembly
US20100233000A1 (en) * 2004-05-25 2010-09-16 Felix Arnold Leakage loss flow control and associated media flow delivery assembly
US20080219876A1 (en) * 2005-03-16 2008-09-11 Felix Arnold Rotary Piston Machine
US7699592B2 (en) * 2005-03-16 2010-04-20 Cor Pumps + Compressors Ag Rotary piston machine
US8517707B2 (en) 2007-08-31 2013-08-27 Robert Bosch Gmbh Method for converting energy from compressed air into mechanical energy and compressed air motor therefor
US20100215531A1 (en) * 2007-08-31 2010-08-26 Felix Arnold Method for converting energy from compressed air into mechanical energy and compressed air motor therefor
US20110186158A1 (en) * 2008-10-02 2011-08-04 Robert Bosch Gmbh Delivery unit
US20110311351A1 (en) * 2010-06-17 2011-12-22 Curtis Patterson Shroud for rotary engine
US9115646B2 (en) * 2010-06-17 2015-08-25 Exponential Technologies, Inc. Shroud for rotary engine
US9874097B2 (en) 2010-06-17 2018-01-23 Exponential Technologies, Inc. Shroud for rotary engine
CN103890401A (zh) * 2011-10-19 2014-06-25 罗伯特·博世有限公司 输送单元
US9422935B2 (en) 2011-10-19 2016-08-23 Robert Bosch Gmbh Feed unit
US10975869B2 (en) 2017-12-13 2021-04-13 Exponential Technologies, Inc. Rotary fluid flow device
US11614089B2 (en) 2017-12-13 2023-03-28 Exponential Technologies, Inc. Rotary fluid flow device
US11168683B2 (en) 2019-03-14 2021-11-09 Exponential Technologies, Inc. Pressure balancing system for a fluid pump

Also Published As

Publication number Publication date
EP1749145A1 (fr) 2007-02-07
WO2005116403A1 (fr) 2005-12-08
EP1749145B1 (fr) 2013-07-17
JP2008500482A (ja) 2008-01-10
DE102004026048A1 (de) 2005-12-29
JP5244385B2 (ja) 2013-07-24
ES2425363T3 (es) 2013-10-15

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Legal Events

Date Code Title Description
AS Assignment

Owner name: COR PUMPS + COMPRESSORS AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ARNOLD, FELIX;REEL/FRAME:018835/0660

Effective date: 20070117

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION

AS Assignment

Owner name: ROBERT BOSCH GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ARNOLD, FELIX;REEL/FRAME:025538/0398

Effective date: 20101123