CH666517A5 - Internally toothed pump or motor - has crescent shaped element between rolling pinion and toothed ring, secured by two screws - Google Patents

Internally toothed pump or motor - has crescent shaped element between rolling pinion and toothed ring, secured by two screws Download PDF

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Publication number
CH666517A5
CH666517A5 CH136785A CH136785A CH666517A5 CH 666517 A5 CH666517 A5 CH 666517A5 CH 136785 A CH136785 A CH 136785A CH 136785 A CH136785 A CH 136785A CH 666517 A5 CH666517 A5 CH 666517A5
Authority
CH
Switzerland
Prior art keywords
housing
crescent
screws
secured
pump
Prior art date
Application number
CH136785A
Other languages
German (de)
Inventor
Gisela Weber
Original Assignee
Gisela Weber
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 Gisela Weber filed Critical Gisela Weber
Priority to CH136785A priority Critical patent/CH666517A5/en
Publication of CH666517A5 publication Critical patent/CH666517A5/en

Links

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
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/101—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with a crescent-shaped filler element, located between the inner and outer intermeshing members
    • 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
    • F04C2240/80—Other components
    • F04C2240/805—Fastening means, e.g. bolts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

The housing (1) for a pump/motor unit contains a toothed ring (4) inside which rotates with a rolling action, a toothed pinion (5) meshing with it. Between them is a crescent shaped element (18). Secured to the housing by three equally spaced bolts (16) is an end plate (2). A screw (17) passing through the crescent, also passes through the housing to screw into the end plate. Two screws can be used, at least one screw passing through the high pressure half of the crescent. USE/ADVANTAGE - The housing and end plate for a hydraulic pump motor unit are prevented from bending, ensuring max. efficiency.

Description

       

  
 



   BESCHREIBUNG



   Pumpen und Motoren gemäss Oberbegriff des Anspruchs 1 sind allgemein bekannt. Dabei kämmt ein innenverzahnter Laufkranz mit einem Ritzel. Zwischen Laufkranz und Ritzel ist längs eines Teils ihres Umfangs ein sichelförmiger Halbmond zur Abdichtung einer Hochdruckkammer von einer Niederdruckkammer angeordnet. Gehäuse und Deckel sind am Umfang zusammengespannt.



   Bei diesen bekannten Pumpen und Motoren wölben sich Gehäuse und Deckel bei hohem Druck etwas aus, was den Maximaldruck begrenzt und den Wirkungsgrad senkt. Die Aufgabe der Erfindung besteht darin, diesen Nachteil zu beseitigen. Diese Aufgabe wird durch die kennzeichnenden   Iblerkmale 1 Anxprochx 1 BdÖSi.   



   Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung beschrieben. Darin zeigt:
Fig. 1 eine Ansicht einer Pumpe mit teilweise weggelassenem Gehäuse, und
Fig. 2 einen Schnitt längs der Linie II-II in Fig. 1.



   In Fig. 1 ist auf der linken Seite das Gehäuse 1 weggelassen. Im Gehäuse 1 ist ein innenverzahnter Laufkranz 4 drehbar gelagert. Mit ihm kämmt ein durch Kugeln 8 formschlüssig mit einer Welle 3 verbundenes Ritzel 5. Im Zwischenraum zwischen Ritzel 5 und Laufkranz 4 ist ein Halbmond 18 durch einen in eine ringförmige Nut 20 eines Deckels 2 eingreifenden Vorsprung 19 in seiner Lage fixiert. Deckel 2 und Gehäuse 1 sind durch Spannhülsen 15 zentriert und durch Schrauben 16 zusammengespannt. Stromabwärts vom Halbmond 18 mündet ein Druckanschluss 21.- Auf der gegenüberliegenden Seite mündet ein nicht dargestellter Sauganschluss im Gehäuse 1. Die Antriebswelle 3 ist gegenüber dem Dekkel 2 durch einen Dichtungsring 11 abgedichtet. Das Gehäuse 1 und der Deckel 2 sind mittels zusätzlicher Schrauben 17 zusammengespannt, welche den Halbmond 18 durchdringen. 

  Eine der Schrauben 17 ist in der Mitte, die andere in der dem Druckanschluss 21 zugewandten Hälfte des Halbmondes 18 angeordnet.



   Die dargestellte Pumpe lässt sich auch als Motor betreiben, wobei die Schrauben 17 wiederum zweckmässigerweise an der der Hochdruckseite zugewandten Hälfte des Halbmondes angreifen. Der Halbmond 18 kann auch einstückig mit dem Gehäuse 1 oder dem Deckel 2 ausgebildet werden. 



  
 



   DESCRIPTION



   Pumps and motors according to the preamble of claim 1 are generally known. An internally toothed running ring meshes with a pinion. A crescent-shaped crescent for sealing a high-pressure chamber from a low-pressure chamber is arranged between the running ring and the pinion along part of its circumference. The housing and cover are clamped together on the circumference.



   In these known pumps and motors, the housing and cover bulge somewhat at high pressure, which limits the maximum pressure and lowers the efficiency. The object of the invention is to eliminate this disadvantage. This task is characterized by the characteristic features 1 Anxprochx 1 BdÖSi.



   An exemplary embodiment of the invention is described below with reference to the drawing. It shows:
Fig. 1 is a view of a pump with the housing partially omitted, and
2 shows a section along the line II-II in FIG. 1st



   In Fig. 1, the housing 1 is omitted on the left side. An internally toothed running ring 4 is rotatably mounted in the housing 1. A pinion 5, which is positively connected to a shaft 3 by balls 8, meshes with it. A crescent 18 is fixed in its position in the space between the pinion 5 and the running ring 4 by a projection 19 engaging in an annular groove 20 of a cover 2. Cover 2 and housing 1 are centered by clamping sleeves 15 and clamped together by screws 16. A pressure connection 21 opens downstream of the crescent moon 18. A suction connection (not shown) opens into the housing 1 on the opposite side. The drive shaft 3 is sealed off from the cover 2 by a sealing ring 11. The housing 1 and the cover 2 are clamped together by means of additional screws 17 which penetrate the crescent 18.

  One of the screws 17 is arranged in the middle, the other in the half of the crescent 18 facing the pressure connection 21.



   The pump shown can also be operated as a motor, the screws 17 in turn expediently engaging the half of the crescent facing the high pressure side. The crescent 18 can also be formed in one piece with the housing 1 or the cover 2.

Claims (2)

PATENTANSPRÜCHE 1. Innenzahnrildumlle ader oder ,motor mit einem Gehäuse (1), einem Deckel (2), einem im Gehäuse (1) drehbaren, innenverzahnten Laufkranz (4), einem damit kämmenden Ritzel (5) und einem zwischen Laufkranz (4) und Ritzel (5) angeordneten Halbmond (18), dadurch gekennzeichnet, dass der Deckel (2) mit dem Gehäuse (1) durch mindestens eine den Halbmond (18) durchdringende Schraube (17) verschraubt ist.  PATENT CLAIMS 1. Internal toothed wire or motor with a housing (1), a cover (2), a rotatable in the housing (1), internally toothed race (4), a meshing pinion (5) and one between the race (4) and pinion (5) arranged crescent (18), characterized in that the cover (2) is screwed to the housing (1) by at least one screw (17) penetrating the crescent (18). 2. Pumpe oder Motor nach Anspruch 1, dadurch gekennzeichnet, dass mindestens eine der Schrauben (17) in der hochdruckseitigen Hälfte des Halbmondes (18) angeordnet ist.  2. Pump or motor according to claim 1, characterized in that at least one of the screws (17) is arranged in the high-pressure side half of the crescent (18).
CH136785A 1985-03-28 1985-03-28 Internally toothed pump or motor - has crescent shaped element between rolling pinion and toothed ring, secured by two screws CH666517A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH136785A CH666517A5 (en) 1985-03-28 1985-03-28 Internally toothed pump or motor - has crescent shaped element between rolling pinion and toothed ring, secured by two screws

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH136785A CH666517A5 (en) 1985-03-28 1985-03-28 Internally toothed pump or motor - has crescent shaped element between rolling pinion and toothed ring, secured by two screws

Publications (1)

Publication Number Publication Date
CH666517A5 true CH666517A5 (en) 1988-07-29

Family

ID=4208763

Family Applications (1)

Application Number Title Priority Date Filing Date
CH136785A CH666517A5 (en) 1985-03-28 1985-03-28 Internally toothed pump or motor - has crescent shaped element between rolling pinion and toothed ring, secured by two screws

Country Status (1)

Country Link
CH (1) CH666517A5 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5692888A (en) * 1995-10-24 1997-12-02 Truninger Ag Gear train mechanism having reduced leakage
EP2752552A1 (en) * 2012-05-25 2014-07-09 Uav Engines Ltd Rotary machine core assembly and rotary machine
CN109139468A (en) * 2018-10-08 2019-01-04 珠海格力节能环保制冷技术研究中心有限公司 Compressor pump structure, rotary compressor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5692888A (en) * 1995-10-24 1997-12-02 Truninger Ag Gear train mechanism having reduced leakage
EP2752552A1 (en) * 2012-05-25 2014-07-09 Uav Engines Ltd Rotary machine core assembly and rotary machine
CN109139468A (en) * 2018-10-08 2019-01-04 珠海格力节能环保制冷技术研究中心有限公司 Compressor pump structure, rotary compressor
CN109139468B (en) * 2018-10-08 2019-11-26 珠海格力电器股份有限公司 Compressor pump structure, rotary compressor

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