EP1898096A2 - Pompe à lobes - Google Patents

Pompe à lobes Download PDF

Info

Publication number
EP1898096A2
EP1898096A2 EP07012326A EP07012326A EP1898096A2 EP 1898096 A2 EP1898096 A2 EP 1898096A2 EP 07012326 A EP07012326 A EP 07012326A EP 07012326 A EP07012326 A EP 07012326A EP 1898096 A2 EP1898096 A2 EP 1898096A2
Authority
EP
European Patent Office
Prior art keywords
rotor
inlet
runners
pump according
longitudinal axis
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.)
Granted
Application number
EP07012326A
Other languages
German (de)
English (en)
Other versions
EP1898096B1 (fr
EP1898096A3 (fr
Inventor
Gerd Langer
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.)
Herold and Co GmbH
Original Assignee
Herold and Co 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 Herold and Co GmbH filed Critical Herold and Co GmbH
Priority to PL07012326T priority Critical patent/PL1898096T3/pl
Publication of EP1898096A2 publication Critical patent/EP1898096A2/fr
Publication of EP1898096A3 publication Critical patent/EP1898096A3/fr
Application granted granted Critical
Publication of EP1898096B1 publication Critical patent/EP1898096B1/fr
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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/126—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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
    • F04C2250/00—Geometry
    • F04C2250/10—Geometry of the inlet or outlet

Definitions

  • the invention is directed to a pump having a housing formed from two intersecting cylinder sections, inlet and outlet openings being provided on opposite sides and a rotor rotatable about its central longitudinal axis being arranged in each cylinder section, the larger transverse axes of the travelers being in at least one Movement phase are each approximately perpendicular to each other and the rotor sealingly against each other and roll against the housing inner wall, and wherein the extending from the intersection of the large transverse axes generatrices each rotor run in opposite directions obliquely to the respective central longitudinal axis and each runner comprises two approximately club-shaped sections, which are connected together at their narrower end via a constriction, wherein the runners have such a configuration and are arranged relative to each other that when the large transverse axes of the two runners perpendicular to each other, the club-shaped portion of a rotor engages the constriction of the other rotor and the two runners sealingly roll against each other, wherein in each phase of the rotational movement
  • Roots pumps Such generically known as known pumps are referred to as Roots pumps or Roots housing and have been proven in practical use for a long time.
  • the runners conventional such Roots pumps have lateral surfaces which extend parallel to the central longitudinal axis of the rotor and thus perpendicular to the flow direction defined by the inlet and outlet ports. Due to this construction of conventional pumps of this type, the pumped medium pulses relatively strongly in dependence on the respective rotational angle position of the rotor.
  • the US-A-1 142 734 describes a pump with two rotors, which have a cross-sectionally a club-shaped interlocking configuration.
  • the discharge and inlet openings in this construction are on the one hand in the region of the front ends and on the other hand on the opposite side approximately in the middle of the housing.
  • the coiled runners Seen in the longitudinal direction, are composed of two sub-rotors, wherein the curvature of the two sub-rotors changes in the region of the mid-perpendicular. Accordingly, the medium to be pumped is pumped substantially in the axial direction from the outsides to the center.
  • the present invention seeks to improve a pump of the type mentioned while preserving its principal benefits so that a pulsation-free, uniform flow of the pumped medium at high production capacity while avoiding dead spaces is achieved, and it should be possible in particular , largely wear-free abrasive media, such as those found in the sugar industry, or to pump products from the dairy and cheese area.
  • the sinusoidal or cosinusoidal generatrix lines according to the invention may be formed linearly in the geometric sense, such an embodiment being particularly suitable for pumping products from the sugar industry.
  • the generatrices are widened to strip-like sealing surfaces. This version is suitable for dairy and cheese products.
  • an inlet opening in each case on the inlet side and exactly opposite and provided with the inlet opening mirror image aligned an outlet opening.
  • Inlet and outlet ports may advantageously be triangular or trapezoidal.
  • a particularly favorable flow behavior is obtained in that the legs or side edges of the inlet or outlet opening are configured sinusoidally or cosinusoidally.
  • the acute-angled edges of the rotor or piston are reduced to 90 ° angle. This leads to less wear in this area, thus minimizing pressure losses and prolonging stand sides.
  • an end coupling of two rotors with sine or cosine shape is possible, which doubles the delivery volume with the same drive head. Since the transition from one to the other rotor is rounded and does not show any acute angle, the wear is reduced to a minimum.
  • a pump shown in the drawing has a pump housing 1, which consists of two intersecting cylinder sections 2, 3.
  • an inlet opening 4 and an outlet opening 5 are provided on the cylinder jacket surface.
  • the inlet opening 4 and the outlet opening 5 are diametrically opposite and have an approximately trapezoidal cross-section.
  • each cylinder section 2, 3 a respective rotor 6 or 7 is arranged, whose center longitudinal axes 8 and 9 extend parallel to the central longitudinal axis of the respective cylinder section 2 and 3, respectively.
  • the rotor 6 and 7 are rotationally driven about their central longitudinal axes 8 and 9 in the opposite direction (arrows 10, 11).
  • the coordinated drive of both runners 6, 7 can be accomplished in a conventional manner, for example by sitting on the rotor shafts 8, 9, intermeshing gears.
  • Each rotor 6, 7 has an approximately oval shape in cross-section and is coiled in the longitudinal direction, i. screw-like turned around the longitudinal axis. This spiraling is designed such that generatrices 12 are formed, which run sinusoidally.
  • these generatrices are formed linearly in the geometric sense.
  • the runners 6, 7 have seen in cross-section in this embodiment, two opposite side concave recesses 13. This embodiment is suitable for pumping abrasive media such as those found in the sugar industry.
  • the sinusoidal generatrix lines are widened like a ribbon. Seen in cross-section, two indentations 14 are provided in this embodiment on each side, which are mutually opposed with respect to the large central longitudinal axis 15 and the small central longitudinal axis 16.
  • Fig. 6 the runners 6, 7 are indicated on the right to the left of the position of the outlet opening 5 - and this applies correspondingly for the diametrically opposite inlet opening 4 - to illustrate.
  • inlet and outlet openings 4, 5 have a trapezoidal shape, with the trapezoidal legs 17 being sinusoidal or cosinusoidal.
  • the inlet or outlet opening 4, 5 substantially triangular.
  • the triangular legs 18 are also formed sinusoidal or cosinusoidal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP07012326A 2006-09-05 2007-06-23 Pompe à lobes Active EP1898096B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07012326T PL1898096T3 (pl) 2006-09-05 2007-06-23 Pompa próżniowa Rootsa

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006041633A DE102006041633A1 (de) 2006-09-05 2006-09-05 Pumpe

Publications (3)

Publication Number Publication Date
EP1898096A2 true EP1898096A2 (fr) 2008-03-12
EP1898096A3 EP1898096A3 (fr) 2010-04-28
EP1898096B1 EP1898096B1 (fr) 2011-08-03

Family

ID=38727488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07012326A Active EP1898096B1 (fr) 2006-09-05 2007-06-23 Pompe à lobes

Country Status (9)

Country Link
US (1) US7766635B2 (fr)
EP (1) EP1898096B1 (fr)
CN (1) CN101139989B (fr)
AT (1) ATE519035T1 (fr)
BR (1) BRPI0703913A2 (fr)
DE (1) DE102006041633A1 (fr)
ES (1) ES2370661T3 (fr)
PL (1) PL1898096T3 (fr)
RU (1) RU2463481C2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010012494U1 (de) * 2010-09-13 2011-12-15 Hugo Vogelsang Maschinenbau Gmbh Drehkolbenpumpe und Drehkolben
DE102012008527B3 (de) 2012-05-02 2013-07-25 Netzsch Pumpen & Systeme Gmbh Drehkolbenpumpe mit optimierten ein-und auslässen
WO2014002225A1 (fr) * 2012-06-28 2014-01-03 株式会社日立製作所 Pompe à engrenages
DE202012010401U1 (de) * 2012-10-31 2014-02-03 Hugo Vogelsang Maschinenbau Gmbh Drehkolbenpumpe mit Direktantrieb
CN103758755B (zh) * 2014-01-27 2015-12-09 浙江理工大学 一种正弦非圆齿轮驱动的八叶片差速泵
IT201700045807A1 (it) * 2017-04-28 2017-07-28 Hero Europe S R L Dispositivo, sistema di dosaggio per prodotti in polvere, liquidi, pastosi o cremosi e macchina dispensatrice comprendente tale dispositivo
CN107905997B (zh) * 2017-10-19 2019-03-08 浙江大学 一种耐磨损的水液压内啮合齿轮泵的齿圈结构

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1142734A (en) * 1913-04-30 1915-06-08 Charles W Sidwell Pump.
GB382953A (en) * 1930-06-11 1932-11-10 Commercial Patents Inc Fluid apparatus provided with co-operating rotary pistons
DE2108714B2 (de) * 1971-02-24 1973-05-30 Gebr Wmkelstrater GmbH, 5600 Wuppertal Barmen Parallel- und aussenachsige rotationskolbenmaschine
US5039289A (en) * 1983-11-07 1991-08-13 Wankel Gmbh Rotary piston blower having piston lobe portions shaped to avoid compression pockets
DE3502839A1 (de) * 1985-01-29 1986-07-31 Bsa Maschinenfabrik Paul G. Langer Gmbh, 8581 Marktschorgast Pumpe
DE3718866A1 (de) * 1987-06-05 1988-12-22 Langer Bsa Maschf Pumpe
US4938670A (en) * 1989-10-02 1990-07-03 Tocew Lee Rotary fluid machine
EP0472751B1 (fr) * 1990-08-27 1994-05-18 Leybold Aktiengesellschaft Rotor pour une pompe à vide avec des rotors à lobes
DE4121684C2 (de) * 1991-06-29 1999-04-01 Herold & Co Gmbh Pumpe
DE4330085A1 (de) * 1993-09-06 1995-03-09 Hugo Vogelsang Maschinenbau Gm Rotationskolben für Verdrängerpumpen nach dem Roots-Prinzip für inkompressible Medien
CZ2000581A3 (cs) * 2000-02-18 2001-04-11 Perna Vratislav Zařízení se šroubovými zuby ve vzájemné interakci
RU2197642C1 (ru) * 2001-12-25 2003-01-27 Румянцев Валентин Павлович Роторная объемная машина
DE102005017575A1 (de) * 2004-08-05 2006-03-16 Börger GmbH Drehkolbenpumpe mit einem Pumpengehäuse und zwei zweiflügeligen Drehkolben
JP4613811B2 (ja) * 2005-12-09 2011-01-19 株式会社豊田自動織機 ルーツ式流体機械

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
ATE519035T1 (de) 2011-08-15
EP1898096B1 (fr) 2011-08-03
RU2463481C2 (ru) 2012-10-10
CN101139989B (zh) 2011-10-12
US7766635B2 (en) 2010-08-03
RU2007132984A (ru) 2009-03-10
EP1898096A3 (fr) 2010-04-28
CN101139989A (zh) 2008-03-12
PL1898096T3 (pl) 2011-12-30
DE102006041633A1 (de) 2008-03-13
US20080056927A1 (en) 2008-03-06
BRPI0703913A2 (pt) 2010-01-19
ES2370661T3 (es) 2011-12-21

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