EP0705980A1 - Groupe de pompage hydraulique - Google Patents

Groupe de pompage hydraulique Download PDF

Info

Publication number: EP0705980A1
Authority: EP; European Patent Office
Prior art keywords: pump; connecting element; hydraulic unit; pressure medium; unit according
Prior art date: 1994-10-04
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

EP95112496A

Other languages

German (de)

English (en)

Other versions

EP0705980B1 (fr

Inventor

Wilhelm Dworak

Olaf Dipl.-Ing. Klemd

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.)

1994-10-04

Filing date

1995-08-09

Publication date

1996-04-10

1995-08-09 Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH

1996-04-10 Publication of EP0705980A1 publication Critical patent/EP0705980A1/fr

2000-03-01 Application granted granted Critical

2000-03-01 Publication of EP0705980B1 publication Critical patent/EP0705980B1/fr

2015-08-09 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
- 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
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/021—Units comprising pumps and their driving means containing a coupling

Definitions

the invention is based on a hydraulic unit according to the preamble of claim 1.
Such hydraulic units used in practice consist of a pump and a connecting element connected to the pump, which is preferably made of aluminum and is produced by the die-casting process.
the connecting element are channels for the pressure medium by cutting processes such as. Turning or drilling trained.
the connection element is flanged to a drive motor together with the pump.
the disadvantage here is that the entire connection element consists of high pressure-resistant material because of the channels for the pressure medium. This makes it relatively expensive to manufacture and, moreover, relatively difficult. Furthermore, the formation of the channels required. by reclamping the connection element in a machine tool a relatively high amount of handling.
the noise and vibration behavior of the hydraulic unit is also relatively poor, since it has hardly any damping properties due to the design of the connecting element in metal.
the hydraulic unit according to the invention with the characterizing features of claim 1 has the advantage that it is relatively inexpensive to manufacture and particularly light. Handling during manufacture is particularly simple since the insert parts only have to be inserted into the connecting element. The use of plastic for the connection element also results in particularly good noise and vibration damping.
the insert parts can be adapted slightly different hydraulic parameters of the flanged units by different inner diameters. In the most favorable case, any machining of the connection element can be dispensed with, which further reduces its manufacturing costs.
Figure 1 shows a hydraulic unit in side view and partially in longitudinal section.
the hydraulic unit consists of a pump 10 and a connection element 11 connected to the pump 10.
the connection element 11, which is made of plastic, is approximately disc-shaped and has 12 in its central axis extending two bores 14, 15 which are separated from each other by a guide web 16 formed by the connecting element 11.
the pump 10 is bsw with the connecting element 11. connected by screwing so that the extension 18 and the drive shaft 19 of the pump 10 protrude into the first bore 14 of the connecting element 11.
the bore 14 is designed such that it encloses the extension 18 in a form-fitting manner.
the respective end faces 20, 21 of the pump 10 or the connecting element 11 lie flat against one another in their overlap region.
the hydraulic unit On the side of the connecting element 11 opposite the pump 10, the hydraulic unit is bsw. flanged to a drive motor, not shown, for the pump 10.
a receptacle 23 is formed in the end face 22 of the connecting element 11, which encloses the corresponding end face of the drive motor in a form-fitting manner.
a nose 24 formed on the connecting element 11 serves to prevent rotation or the correct installation of the drive motor.
a corresponding extension of the drive motor projects positively into the other bore 15.
the drive shaft of the drive motor is guided through the guide web 16 for coupling the drive motor to the pump 10.
a recess 26, 27 is formed in the connecting element 11, which open into one another at right angles.
the recesses 26, 27 are either bsw. manufactured by drilling, or are preferably already taken into account accordingly in the injection mold for the connecting element 11, ie that the recesses 26, 27 result from the injection molding of the connecting element 11.
a pressure medium tube 28, 29 consisting of metal is inserted, the outer diameter of the tube 29 being larger than the outer diameter of the tube 28.
the tube 28 protrudes at one end into the tube 29 and the other end of the tube 28 protrudes from the end face 21 of the connecting element 11. There it is surrounded by a corresponding pressure medium connection bore 30 of the pump 10.
the end of the tube 29 protruding from the circumference of the connecting element 11 is bsw by means of a pressure medium line, not shown. connected to a reservoir for the pressure medium.
the pump 10 can thus use the pressure medium line and the pipes 28, 29 to draw pressure medium from the reservoir, compress it, and pass it on to a consumer via an outlet (not shown) of the pump 10.
connection element 11 If a pump 10 is flanged to the connection element 11 with changed hydraulic parameters, the correspondingly larger or smaller diameter of the bores 31, 32 in the tubes 28, 29 can be taken into account. The size of the recesses 26, 27 in the connection element 11 can, however, remain unchanged.
tubes 28, 29 elements of a different design can also be used to conduct or guide the pressure medium. These can be have a polygonal cross section, the recesses 26, 27 being adapted accordingly.

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Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Details Of Reciprocating Pumps (AREA)
Valves And Accessory Devices For Braking Systems (AREA)

EP95112496A 1994-10-04 1995-08-09 Groupe de pompage hydraulique Expired - Lifetime EP0705980B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4435494A DE4435494A1 (de)	1994-10-04	1994-10-04	Hydroaggregat
DE4435494		1994-10-04

Publications (2)

Publication Number	Publication Date
EP0705980A1 true EP0705980A1 (fr)	1996-04-10
EP0705980B1 EP0705980B1 (fr)	2000-03-01

Family

ID=6529951

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP95112496A Expired - Lifetime EP0705980B1 (fr)	1994-10-04	1995-08-09	Groupe de pompage hydraulique

Country Status (3)

Country	Link
EP (1)	EP0705980B1 (fr)
DE (2)	DE4435494A1 (fr)
ES (1)	ES2143567T3 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CH423369A (de) *	1965-04-14	1966-10-31	Calotech Ets	Schwingungsarme Verbindung
US4362480A (en) *	1980-04-01	1982-12-07	Mitsubishi Denki Kabushiki Kaisha	Rotary roller vane pump made of specific materials
DE3144983A1 (de) *	1981-11-12	1983-05-19	Robert Bosch Gmbh, 7000 Stuttgart	Elektromotorisch angetriebenes pumpaggregat
EP0217128A1 (fr) *	1985-08-27	1987-04-08	Alcatel Cit	Ensemble moto-pompe à palettes sans fuites extérieures d'huile
EP0459092A1 (fr) *	1990-05-29	1991-12-04	Leybold Aktiengesellschaft	Pompe à vide à deux étages et son procédé de construction
DE4304149C1 (de) *	1993-02-12	1994-09-08	Grundfos As	Selbstansaugendes Motorpumpenaggregat

1994
- 1994-10-04 DE DE4435494A patent/DE4435494A1/de not_active Withdrawn
1995
- 1995-08-09 EP EP95112496A patent/EP0705980B1/fr not_active Expired - Lifetime
- 1995-08-09 ES ES95112496T patent/ES2143567T3/es not_active Expired - Lifetime
- 1995-08-09 DE DE59507885T patent/DE59507885D1/de not_active Expired - Fee Related

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CH423369A (de) *	1965-04-14	1966-10-31	Calotech Ets	Schwingungsarme Verbindung
US4362480A (en) *	1980-04-01	1982-12-07	Mitsubishi Denki Kabushiki Kaisha	Rotary roller vane pump made of specific materials
DE3144983A1 (de) *	1981-11-12	1983-05-19	Robert Bosch Gmbh, 7000 Stuttgart	Elektromotorisch angetriebenes pumpaggregat
EP0217128A1 (fr) *	1985-08-27	1987-04-08	Alcatel Cit	Ensemble moto-pompe à palettes sans fuites extérieures d'huile
EP0459092A1 (fr) *	1990-05-29	1991-12-04	Leybold Aktiengesellschaft	Pompe à vide à deux étages et son procédé de construction
DE4304149C1 (de) *	1993-02-12	1994-09-08	Grundfos As	Selbstansaugendes Motorpumpenaggregat

Also Published As

Publication number	Publication date
DE4435494A1 (de)	1996-04-11
ES2143567T3 (es)	2000-05-16
EP0705980B1 (fr)	2000-03-01
DE59507885D1 (de)	2000-04-06

Legal Events

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1996-02-23	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
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1996-12-11	17P	Request for examination filed	Effective date: 19961010
1998-09-09	17Q	First examination report despatched	Effective date: 19980723
1999-04-20	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1999-08-04	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1999-08-04	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1999-11-30	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
2000-01-14	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
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2000-05-23	ITF	It: translation for a ep patent filed
2000-05-31	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 20000504
2000-06-02	ET	Fr: translation filed
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