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1. WO2020110180 - INTERNAL GEAR PUMP

Publication Number WO/2020/110180
Publication Date 04.06.2020
International Application No. PCT/JP2018/043438
International Filing Date 26.11.2018
IPC
F04C 2/10 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
2Rotary-piston machines or pumps
08of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
10of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
CPC
F04C 2/10
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
2Rotary-piston machines or pumps
08of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
10of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
Applicants
  • 住友精密工業株式会社 SUMITOMO PRECISION PRODUCTS CO., LTD. [JP]/[JP]
Inventors
  • 吉田 啓 YOSHIDA Kei
Agents
  • 特許業務法人前田特許事務所 MAEDA & PARTNERS
Priority Data
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) INTERNAL GEAR PUMP
(FR) POMPE À ENGRENAGE INTERNE
(JA) 内接ギヤポンプ
Abstract
(EN)
An internal gear pump (1) is provided with: a pinion gear (3); a ring gear (4); a crescent (54); a housing (5) with a slide surface (51) on which an outer peripheral surface (41) of the ring gear slides; a high-pressure oil supply portion (8) which has an inlet (81) opening on the slide surface and supplies a high-pressure operating oil; and a recess (9) provided in the slide surface so as to increase the interval between the outer peripheral surface of the ring gear and the slide surface. The inlet is located in a pressure-increasing region, and the recess is located in a high-pressure region.
(FR)
L'invention concerne une pompe à engrenage interne (1) pourvue : d'un pignon (3) ; d'une couronne dentée (4) ; d'un croissant (54) ; d'un boîtier (5) pourvu d'une surface de coulissement (51) sur laquelle une surface périphérique externe (41) de la couronne coulisse ; d'une partie d'alimentation en huile haute pression (8) qui a une ouverture d'entrée (81) sur la surface de coulissement et fournit une huile de fonctionnement à haute pression ; et d'un évidement (9) disposé dans la surface de coulissement de façon à augmenter l'intervalle entre la surface périphérique externe de la couronne dentée et la surface de coulissement. L'entrée est située dans une région d'augmentation de pression, et l'évidement est situé dans une région à haute pression.
(JA)
内接ギヤポンプ(1)は、ピニオンギヤ(3)と、リングギヤ(4)と、クレセント(54)と、リングギヤの外周面(41)が摺動する摺動面(51)を有するハウジング(5)と、摺動面に開口する導入口(81)を有しかつ、高圧の作動油を供給する高圧油供給部(8)と、リングギヤの外周面と摺動面との間隔が広がるように、摺動面に設けられた凹部(9)と、を備える。導入口は、昇圧領域に位置し、凹部は、高圧領域に位置している。
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