WO2003022547A1 - Verfahren zur fertigung eines einen kanal aufweisenden gehäuseteils einer förderpumpe, gehäuseteil für eine förderpumpe und werkzeugform zur fertigung eines einen kanal aufweisenden gehäuseteils - Google Patents
Verfahren zur fertigung eines einen kanal aufweisenden gehäuseteils einer förderpumpe, gehäuseteil für eine förderpumpe und werkzeugform zur fertigung eines einen kanal aufweisenden gehäuseteils Download PDFInfo
- Publication number
- WO2003022547A1 WO2003022547A1 PCT/DE2002/003309 DE0203309W WO03022547A1 WO 2003022547 A1 WO2003022547 A1 WO 2003022547A1 DE 0203309 W DE0203309 W DE 0203309W WO 03022547 A1 WO03022547 A1 WO 03022547A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- channel
- housing part
- parting plane
- housing element
- producing
- Prior art date
Links
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
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/002—Regenerative pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2628—Moulds with mould parts forming holes in or through the moulded article, e.g. for bearing cages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/002—Regenerative pumps
- F04D5/007—Details of the inlet or outlet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C2045/0077—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping removing burrs or flashes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/02—Deburring or deflashing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2250/00—Geometry
- F05B2250/50—Inlet or outlet
- F05B2250/503—Inlet or outlet of regenerative pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49236—Fluid pump or compressor making
Definitions
- the invention relates to a method for producing a housing part of a feed pump having a channel in a tool mold having at least two molded parts, in which the molded parts are brought into an adjacent position. Furthermore, the invention relates to a housing part for a feed pump, in particular for a fuel pump designed as a side channel or peripheral pump, which is designed for manufacture in a tool mold as a molded part with at least one central parting plane, with an end face provided opposite an arrangement of an impeller of the feed pump and with one channel from the front to a second side. The invention also relates to a mold for producing a housing part of a feed pump having a channel.
- Housing parts for feed pumps known from practice have an inlet channel or an outlet channel and are often made of plastic in an injection mold.
- the molded parts of the injection mold are bowl-shaped.
- One of the molded parts has a stamp forming the channel.
- the disadvantage here is that the molded parts no longer lie reliably against one another after wear, so that a burr arises during production. Such a Burr can only be removed manually with great effort.
- the channel is also tapered towards the end face to be arranged opposite the impeller, the ridge arises at a narrow point of the channel, where the flow speed is particularly high and it opposes a particularly high resistance to a flow of the feed pump.
- the ridge can produce gas bubbles in the flow. These gas bubbles develop increasingly at high temperatures and lead to cavitation of the housing part.
- Even after manual removal of the burr an unevenness in the wall of the channel remains in the area of the parting plane, which causes turbulence in the flow.
- the invention is based on the problem of designing a method of the type mentioned at the outset in such a way that it reliably prevents the formation of a burr in a region of the channel provided for a high flow velocity. Furthermore, an easy-to-manufacture housing part of the type mentioned at the outset is to be created, in which turbulence in the flow is avoided as far as possible. In addition, a tool shape is to be created which enables the most cost-effective production of the housing part.
- the first-mentioned problem is solved in that the shaped parts are moved into the channel for movement into the adjacent position.
- the second-mentioned problem namely the creation of a housing part, in which turbulence in the flow is avoided as far as possible, is solved according to the invention in that the parting plane is arranged within the channel.
- This configuration means that a ridge generated by the parting plane is at a distance from the end face to be arranged opposite the impeller. This largely prevents turbulence in the flow flowing into the impeller. Therefore, the feed pump provided with the housing part according to the invention has a particularly high efficiency.
- the parting plane can be easily aligned with respect to the flow direction in the channel if the parting plane is arranged inclined at an intended angle with respect to the axis of the channel. This leads to a further reduction in the turbulence of the flow in the channel.
- the channel for guiding the flow is designed to be bent at an intended angle onto the impeller.
- the housing part according to the invention can be manufactured particularly easily according to another advantageous development of the invention if the parting plane is arranged between a first section of the channel which adjoins the end face and a second section which adjoins the first section and is arranged transversely thereto.
- a further advantage of this design is that the sections of the channel are each designed without undercuts, so that the housing part can be easily removed axially.
- the invention further contributes to further reducing the turbulence in the flow if the parting plane is spaced apart from a guide lip adjacent to the end face for the flow to be conveyed.
- a lateral deflection of the flow in the channel can easily be avoided if the region of the parting plane adjacent to the end face is guided parallel to the guide lip.
- the last-mentioned problem namely the creation of a tool shape which enables the housing part to be manufactured as inexpensively as possible, is invented solved by areas of two molded parts that protrude into the channel and are undercut-free. With this design, the housing part can be easily pulled axially out of the mold. This makes the production of the housing part particularly cost-effective. Thanks to the invention, unevenness in the channel formed by the molded parts in their adjoining areas can be moved to an area in which the flow within the channel is particularly little impaired.
- FIG. 1 shows a sectional view through a feed pump with a housing part according to the invention
- FIG. 2 shows a greatly enlarged representation of a partial area of the housing part from FIG. 1 during manufacture
- FIG 3 shows the housing part from Figure 2 when removing a burr.
- FIG. 1 shows a feed pump 1 according to the invention, designed as a side channel pump.
- the feed pump 1 can be used, for example, as a fuel pump for delivering fuel in a motor vehicle.
- the feed pump 1 has an impeller 3 driven by an electric motor 2.
- the impeller 3 is opposed by two housing parts 5, 6 which are spaced apart by an annular spacer 4 in the intended position.
- blade chambers 7 are arranged.
- the housing parts 5, 6 have partially annular ducts 8 opposite the vane chambers 7.
- a channel 9, 10 connected to the respective part-ring-shaped channel 8 is arranged.
- the channel 9 arranged at the free end of the feed pump 1 is designed as an inlet channel, while the channel 10 pointing towards the electric motor 2 is designed as an outlet channel.
- FIG. 2 shows a partial area of the housing part 5 arranged at the free end of the feed pump 1 from FIG. 1 with the channel 9 designed as an inlet channel in a greatly enlarged illustration during production in a tool mold 11.
- the tool mold 11 has two, each with a partial area in the channel 9 protruding molded parts 12, 13.
- the mold 11 can be, for example, an injection mold.
- the molded parts 12, 13 lie against one another within the channel 9 in a parting plane inclined by the angle ⁇ and are each designed without undercuts.
- the housing part 5 can be demolded by axially pulling the molded parts 12, 13 apart.
- the parting plane 14 is guided up to a guide lip 15 of the housing part 5 provided for guiding the medium conveyed by the feed pump 1.
- a burr 16 shown in FIG. 3 can arise in the region of the parting plane 14.
- the burr is located between a first section 18 opposite the impeller from FIG. 1 and a second section 19 arranged transversely to the first section 18.
- the burr 16 can be removed with a punch 17 to be pressed through the channel 9.
- the punch 17 has a NEN the projection surface of the parting plane 14 on the end face of the housing part 5 corresponding cross section.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02769918A EP1423247A1 (de) | 2001-09-06 | 2002-09-06 | Verfahren zur fertigung eines einen kanal aufweisenden gehäuseteils einer förderpumpe, gehäuseteil für eine förderpumpe und werkzeugform zur fertigung eines einen kanal aufweisenden gehäuseteils |
US10/488,807 US20050034304A1 (en) | 2001-09-06 | 2002-09-06 | Method for producing a housing element of a supply pump provided with a channel housing element for a supply pump and a tool mould for producing a housing element comprising a channel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10143810A DE10143810C1 (de) | 2001-09-06 | 2001-09-06 | Verfahren zur Fertigung eines einen Kanal aufweisenden Gehäuseteils einer Förderpumpe, Gehäuseteil für eine Förderpumpe und Werkzeugform zur Fertigung eines einen Kanal aufweisenden Gehäuseteils |
DE10143810.9 | 2001-09-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003022547A1 true WO2003022547A1 (de) | 2003-03-20 |
Family
ID=7697987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/003309 WO2003022547A1 (de) | 2001-09-06 | 2002-09-06 | Verfahren zur fertigung eines einen kanal aufweisenden gehäuseteils einer förderpumpe, gehäuseteil für eine förderpumpe und werkzeugform zur fertigung eines einen kanal aufweisenden gehäuseteils |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050034304A1 (de) |
EP (1) | EP1423247A1 (de) |
CN (1) | CN1551822A (de) |
DE (1) | DE10143810C1 (de) |
WO (1) | WO2003022547A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5062208A (en) * | 1990-08-31 | 1991-11-05 | General Motors Corporation | Method of molding a bearing separator |
WO1998023382A1 (en) * | 1996-11-27 | 1998-06-04 | Par-Way Group | A colliding stream spray dispensing system with a moldable nozzle |
DE10024741A1 (de) * | 1999-05-20 | 2001-01-18 | Aisan Ind | Seitenkanalpumpe |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19941786B4 (de) * | 1999-09-02 | 2008-11-20 | Continental Automotive Gmbh | Förderpumpe |
-
2001
- 2001-09-06 DE DE10143810A patent/DE10143810C1/de not_active Expired - Fee Related
-
2002
- 2002-09-06 CN CNA028174496A patent/CN1551822A/zh active Pending
- 2002-09-06 EP EP02769918A patent/EP1423247A1/de not_active Withdrawn
- 2002-09-06 WO PCT/DE2002/003309 patent/WO2003022547A1/de not_active Application Discontinuation
- 2002-09-06 US US10/488,807 patent/US20050034304A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5062208A (en) * | 1990-08-31 | 1991-11-05 | General Motors Corporation | Method of molding a bearing separator |
WO1998023382A1 (en) * | 1996-11-27 | 1998-06-04 | Par-Way Group | A colliding stream spray dispensing system with a moldable nozzle |
DE10024741A1 (de) * | 1999-05-20 | 2001-01-18 | Aisan Ind | Seitenkanalpumpe |
Also Published As
Publication number | Publication date |
---|---|
CN1551822A (zh) | 2004-12-01 |
DE10143810C1 (de) | 2003-05-28 |
US20050034304A1 (en) | 2005-02-17 |
EP1423247A1 (de) | 2004-06-02 |
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