EP0334040B1 - Zahnradmaschine (Pumpe oder Motor) - Google Patents

Zahnradmaschine (Pumpe oder Motor) Download PDF

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Publication number
EP0334040B1
EP0334040B1 EP89103043A EP89103043A EP0334040B1 EP 0334040 B1 EP0334040 B1 EP 0334040B1 EP 89103043 A EP89103043 A EP 89103043A EP 89103043 A EP89103043 A EP 89103043A EP 0334040 B1 EP0334040 B1 EP 0334040B1
Authority
EP
European Patent Office
Prior art keywords
gear
teeth
driving gear
same
motor
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.)
Expired - Lifetime
Application number
EP89103043A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0334040A1 (de
Inventor
Gerhard Dipl.-Ing. Nonnenmacher
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
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0334040A1 publication Critical patent/EP0334040A1/de
Application granted granted Critical
Publication of EP0334040B1 publication Critical patent/EP0334040B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04C2/14—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
    • F04C2/20—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 dissimilar tooth forms

Definitions

  • the invention relates to a gear pump or a gear motor according to the preamble of the main claim, as shown for example in DE-B 22 42 269.
  • a rotary piston compressor has become known with at least two rotors as the main and secondary rotor and with helically wound tooth gaps or gear wheels.
  • the different number of teeth of the rotors with approximately the same outer and inner diameter is due to the fact that the tooth profile of the main rotor is essentially convex and outside of the roller rotor, the tooth flank of the secondary rotor is essentially concave and is located within the rolling circle.
  • Such a machine is not suitable as a gear pump or gear motor.
  • a similar screw rotor machine has become known from DE-A 32 46 685. This machine, too, because it was also designed as a rotary lobe compressor for gases, cannot be used as a gear pump or motor either.
  • the gear pump according to the invention or the gear motor according to the invention with the characterizing features of the main claim have the advantage that - apart from the fact that they are liquid machines - the hydraulic torque is divided between the two gears in such a way that the highest possible proportion is generated directly on the driving gear . This improves the hydraulic-mechanical efficiency.
  • the gear machine has a driving gear 10 and a driven gear 11 in a known manner.
  • the driven gear 11 has two teeth more than the driving gear 10.
  • the pitch point W shifts from the center, and the engagement on the driven gear 11 moves in the direction of the tip circle, the torque of which is reduced , and on the driving wheel 10 in the direction of the root circle F, whereby its torque becomes larger. Thanks to the more direct flow of the throughput, the hydraulic-mechanical efficiency is improved.
  • the driving gear 10 is corrected for plus and the driven gear 11 for minus for this purpose.
  • the gears remain gearable even with different numbers of teeth.
  • the requirement for an identical tip diameter of both wheels limits the geometric possibilities of involute toothing. Teeth on the grinding wheel and undercut tendency on the driven wheel form the limits.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Hydraulic Motors (AREA)
  • Gears, Cams (AREA)
EP89103043A 1988-03-23 1989-02-22 Zahnradmaschine (Pumpe oder Motor) Expired - Lifetime EP0334040B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3809721 1988-03-23
DE3809721A DE3809721C1 (enrdf_load_stackoverflow) 1988-03-23 1988-03-23

Publications (2)

Publication Number Publication Date
EP0334040A1 EP0334040A1 (de) 1989-09-27
EP0334040B1 true EP0334040B1 (de) 1992-08-26

Family

ID=6350448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89103043A Expired - Lifetime EP0334040B1 (de) 1988-03-23 1989-02-22 Zahnradmaschine (Pumpe oder Motor)

Country Status (2)

Country Link
EP (1) EP0334040B1 (enrdf_load_stackoverflow)
DE (2) DE3809721C1 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3737403A1 (de) * 1987-11-04 1989-05-24 Bosch Gmbh Robert Hydraulische zahnradmaschine (pumpe oder motor)
DE4242217C2 (de) * 1992-12-15 1995-07-20 Bosch Gmbh Robert Zahnradmaschine (Pumpe oder Motor)
DE4320489C2 (de) * 1993-06-21 2001-06-28 Bosch Gmbh Robert Zahnradmaschine (Pumpe oder Motor)
CN108291537B (zh) 2015-12-04 2020-10-09 奥迪股份公司 外啮合齿轮泵

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1403934A1 (de) * 1960-03-14 1969-01-16 Reiners U Wiggermann Ohg Regelbare Zahnrad-Verdraengungsmaschine
US3303792A (en) * 1964-04-20 1967-02-14 Roper Ind Inc Gear pump with trapping reliefs
JPS50702B2 (enrdf_load_stackoverflow) * 1971-08-28 1975-01-10
DE2421891A1 (de) * 1974-05-07 1975-11-20 Bosch Gmbh Robert Zahnradmotor
SE429783B (sv) * 1981-12-22 1983-09-26 Sullair Tech Ab Rotorer for en skruvrotormaskin
DE8434596U1 (de) * 1983-12-14 1985-02-21 Boge Kompressoren Otto Boge Gmbh & Co Kg, 4800 Bielefeld Drehkolbenverdichter

Also Published As

Publication number Publication date
EP0334040A1 (de) 1989-09-27
DE3809721C1 (enrdf_load_stackoverflow) 1989-06-01
DE58902105D1 (de) 1992-10-01

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