EP1178216B1 - Pumpengehäuse mit Verbindungsstegen - Google Patents
Pumpengehäuse mit Verbindungsstegen Download PDFInfo
- Publication number
- EP1178216B1 EP1178216B1 EP01118971A EP01118971A EP1178216B1 EP 1178216 B1 EP1178216 B1 EP 1178216B1 EP 01118971 A EP01118971 A EP 01118971A EP 01118971 A EP01118971 A EP 01118971A EP 1178216 B1 EP1178216 B1 EP 1178216B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump housing
- pump
- housing
- connecting web
- housing according
- 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
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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- 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
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/60—Assembly methods
- F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/40—Organic materials
- F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
Definitions
- the invention relates to a pump housing made of plastic a centrifugal pump, with a pump chamber containing an impeller space for receiving the pump impeller and the impeller space the outer surrounding spiral space that covers one Entry area is connected to the impeller space.
- the pump housing usually has a coaxial with the Impeller axis aligned suction port and one at the end of Spiral space arranged discharge nozzle.
- the impeller space is widened in the radial and / or axial direction.
- a tongue separates the impeller space from the spiral space grown to its maximum extent or from the discharge nozzle.
- the impeller space with the Spiral space connects, over nearly the complete extent of the Impeller chamber.
- US 6 095 771 A discloses a fuel pump which has an additional wear-resistant insert, said insert holes has, engage in the pins of a housing part to the use to fix.
- US 4 052 133 A discloses a centrifugal pump in which protrusions on the first housing part in corresponding recesses in the second Housing part intervene to ensure the correct alignment of the two To ensure housing parts of the pump to each other.
- the object of the invention is therefore to provide a structurally simple and inexpensive to manufacture pump housing of the aforementioned To create a way to maintain a high level of weight while maintaining low weight Strength and high rigidity and thus optimal having hydraulic efficiency.
- the main advantage is that in particular at large-volume pump housings deformation of the housing geometry even with lighter materials such as plastic manufactured pump housings are significantly reduced.
- the connecting webs can be inexpensively manufactured and assembled and they only have a very light weight opposite the weight savings in the pump housing due to a lighter material is negligible. Overall, one is significant weight reduction of the pump housing achievable. It is particularly advantageous if the or the connecting web (s) on one or both sides of the housing walls of the pump housing is poured or are. Especially if that Pump housing in one piece, for example in Kernelschmelzvon is produced, the connecting webs can directly in the core tool integrated and on both sides of the pump housing be poured or sprayed.
- a pump housing in the To execute multi-shell technique.
- Such housing halves can also be molded with Connecting bars made particularly simple and inexpensive become. All connecting bridges can be connected to one or the other Case half or alternately on one or the other Be formed housing half.
- the attachment of the connecting webs on the second housing half can, for example, cohesively, in particular by a Welding or adhesive joint be executed.
- the connecting webs on the second Case half non-positively and / or positively, in particular are attached via a resilient snap connection. This is a particularly easy and quick mountability given.
- the Pump housing also consists of two axially adjacent housing halves exist, wherein the connecting webs as a separate Elements on both housing halves material-locking, non-positive and / or form-fitting, in particular via snap connections are attached.
- connecting web in cross-section is round or oval.
- connection web in cross section the shape a profiled bar or a profiled vane or a Having wing.
- the connecting web in cross-section the shape of a guide vane or a wing with a curved profile or with a Drop profile has.
- the angle of the profile to the impeller blades can doing so to the fluidic requirements in the desired use of the centrifugal pump can be adjusted.
- the pump housing 1 shown in Figure 1 consists of two axially adjacent housing halves 2 and 3.
- the first housing half 2 lies with its outside on the not shown Motor housing of the drive motor of the pump.
- the second half of the housing 3 is sealed at the remote from the motor housing Side on the first housing half 2 and thus closes the Pump chamber inside the pump housing 1 tightly.
- the second housing half 3 has a coaxial with the motor axis Intake manifold 4, which in the pump impeller not shown receiving impeller space 5 opens. Radial outside of Impeller space 5, the spiral space 6, whose diameter extends continuously increases over the circumference of the impeller space 5. At its end opens the spiral space 6 in the tangentially occidentalrekkenden Discharge nozzle 7. The transition from the spiral chamber 6 to the discharge nozzle 7 is separated from the impeller space 5 by a tongue 8.
- the inlet area 9 extends through which the impeller space 5 is connected to the spiral space 6 via almost the entire circumference of the impeller space 5.
- the entry region forming the spiral inlet is in the spiral inlet 9 one or more connecting webs 10 are arranged.
- the Connecting webs 10 extend parallel to the impeller axis 11 between the housing walls 12 and 13 of the two housing halves 2 and 3.
- In the embodiment shown in Figure 2 are a total of two connecting webs 10 with a round cross section arranged so that they are opposite to the tongue 8 each about 120 ° offset in the circumferential direction.
- the connecting webs 10 are on the first made of plastic Casing half 2 molded in one piece.
- the attachment to the second housing half 3 is shown in the two in Figure 1 Connecting webs 10 a and 10 b executed example different.
- the connecting web 10 a shown above is at his free end via a resilient snap connection 14 positive fit attached to a projection 15 of the second housing half 3.
- the free end of the connecting web 10 a is at the to the projection beveled side, leaving a simple assembly of the pump housing 1 by axially pushing the second Housing half 3 can be done on the first housing half 2.
- Of the Connecting web 10 a springs here slightly elastically outward, until the snap connection 14 in the fully assembled position the housing half 3 springs back and locks.
- connecting web 10 b lies with a projection 16 at its free end in a corresponding Recess of the second housing half 3 a. additionally is the free end of the connecting web 10 b by a not closer shown welded connection cohesively on the second Housing half 3 attached.
- the pump housing 1 is also at high pressure loads permanently high strength and high Rigidity.
- the first housing half 2 is additionally through the supporting motor wall supported.
- In the area of connecting bridges 10 are in particular axial deformations of the second housing half 3 and thus the pump housing 1 excluded, so that for optimum hydraulic efficiency required gap between the pump impeller and the pump housing 1 permanently can be complied with.
- the pump housing 1 shown in Figures 3 to 5 consists of two axially adjacent housing halves 2 and 3. At both Housing halves 2 and 3 are each a plurality of connecting webs 10th molded, wherein the connecting webs 10 in the circumferential direction respectively alternately on the one 2 and another 3 housing half are poured. When mounting the pump housing 1 the connecting webs 10 on the respective other housing half glued. Alternatively, the free ends of the connecting webs 10 However, also be provided with an elastic snap connection and by hooking on the respective other housing half 2, 3rd be attached.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
- Figur 1:
- Querschnitt durch ein erfindungsgemäßes Pumpengehäuse,
- Figur 2:
- Schnittansicht eines erfindungsgemäßen Pumpengehäuses bei einer senkrecht zur Laufradachse gelegten Schnittebene,
- Figur 3:
- Dreidimensionale Ansicht eines erfindungsgemäßen Pumpengehäuses,
- Figur 4:
- Dreidimensionale Ansicht des Pumpengehäuses aus Figur 3 mit abgenommener motorseitiger Gehäusehälfte, und
- Figur 5:
- Dreidimensionale Ansicht der abgenommenen motorseitigen Gehäusehälfte des Pumpengehäuses aus Figur 3.
Claims (11)
- Aus Kunststoff bestehendes Pumpengehäuse für eine Kreiselpumpe (1), mit einer Pumpenkammer, die einen Laufradraum (5) zur Aufnahme des Pumpenlaufrades und einen den Laufradraum (5) außen umgebenden Spiralraum umfaßt, der über einen Eintrittsbereich (9) mit dem Laufradraum (5) verbunden ist,
dadurch gekennzeichnet, daß in dem Eintrittsbereich (9) mindestens ein Verbindungssteg (10) angeordnet ist, der sich zwischen den sich axial gegenüberliegenden Gehäusewandungen (12, 13) des Pumpengehäuses (1) erstreckt und der an beiden Gehäusewandungen (12, 13) befestigt ist. - Pumpengehäuse nach Anspruch 1, dadurch gekennzeichnet, daß der bzw. die Verbindungssteg(e) (10) einseitig oder beidseitig an die Gehäusewandungen (12, 13) des Pumpengehäuses (1) angegossen ist bzw. sind.
- Pumpengehäuse nach Anspruch 1, dadurch gekennzeichnet, daß es aus zwei axial aneinander anliegenden Gehäusehälften (2, 3) besteht, wobei der bzw. die Verbindungssteg(e) (10) einstückig an eine erste Gehäusehälfte (2) angeformt ist bzw. sind.
- Pumpengehäuse nach Anspruch 3, dadurch gekennzeichnet, daß der bzw. die Verbindungssteg(e) (10b) an der zweiten Gehäusehälfte (3) stoffschlüssig befestigt, insbesondere angeschweißt ist bzw. sind.
- Pumpengehäuse nach Anspruch 3, dadurch gekennzeichnet, daß der bzw. die Verbindungssteg(e) (10a) an der zweiten Gehäusehälfte (3) kraftschlüssig und/oder formschlüssig, insbesondere über eine Schnappverbindung (14) befestigt ist bzw. sind.
- Pumpengehäuse nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß es aus zwei axial aneinander anliegenden Gehäusehälften (2, 3) besteht, wobei der bzw. die Verbindungssteg(e) (10) als separate(s) Element(e) an beiden Gehäusehälften (2, 3) stoffschlüssig und/oder kraftschlüssig und/oder formschlüssig, insbesondere über eine Schnappverbindung befestigt ist bzw. sind.
- Pumpengehäuse nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß der Verbindungssteg (10) im Querschnitt rund oder oval ist.
- Pumpengehäuse nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß der Verbindungssteg (10) im Querschnitt die Form eines Profilstabes oder einer profilierten Leitschaufel aufweist.
- Pumpengehäuse nach Anspruch 8, dadurch gekennzeichnet, daß der Verbindungssteg (10) im Querschnitt die Form einer profilierten Leitschaufel mit einem gewölbten Profil oder mit einem Tropfenprofil aufweist.
- Pumpengehäuse nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß 2 bis 20, vorzugsweise 4 bis 10 Verbindungsstege (10) im Eintrittsbereich (9)angeordnet sind.
- Pumpengehäuse nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß der bzw. die Verbindungssteg(e) (10) Bestandteil(e) eines hydraulischen Leitapparates der Kreiselpumpe ist bzw. sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10038833A DE10038833A1 (de) | 2000-08-04 | 2000-08-04 | Pumpengehäuse mit Verbindungsstegen |
DE10038833 | 2000-08-04 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1178216A2 EP1178216A2 (de) | 2002-02-06 |
EP1178216A3 EP1178216A3 (de) | 2004-01-02 |
EP1178216B1 true EP1178216B1 (de) | 2005-10-12 |
Family
ID=7651827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01118971A Expired - Lifetime EP1178216B1 (de) | 2000-08-04 | 2001-08-06 | Pumpengehäuse mit Verbindungsstegen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1178216B1 (de) |
DE (2) | DE10038833A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITUB20153948A1 (it) | 2015-09-28 | 2017-03-28 | Dab Pumps Spa | Struttura perfezionata di elettropompa centrifuga e voluta per una simile elettropompa |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE976020C (de) * | 1953-05-01 | 1963-01-17 | Voith Gmbh J M | Geschweisster Vorleitschaufelring fuer Wasserturbinen oder Pumpen mit Spiralgehaeuse |
DE1275865B (de) * | 1966-12-16 | 1968-08-22 | Siemens Ag | Kreiselpumpenkunststoffgehaeuse |
US4052133A (en) * | 1975-11-12 | 1977-10-04 | The Gorman-Rupp Company | Corrosion and abrasion resistant centrifugal pump |
DE2908733A1 (de) * | 1979-03-06 | 1980-09-11 | Gardena Kress & Kastner Gmbh | Transportable motorpumpe |
JPS6135218A (ja) * | 1985-02-25 | 1986-02-19 | Hitachi Ltd | 合成樹脂製ポンプの製造方法 |
DE4005640A1 (de) * | 1990-02-22 | 1991-08-29 | Klein Schanzlin & Becker Ag | Spiralgehaeuse in blechbauweise |
DE19634253A1 (de) * | 1995-12-30 | 1997-07-03 | Bosch Gmbh Robert | Aggregat zum Fördern von Kraftstoff |
DE29708610U1 (de) * | 1997-05-15 | 1997-07-10 | Winter GmbH, 63512 Hainburg | Gehäuse mit einem unregelmäßigen Hohlraum |
-
2000
- 2000-08-04 DE DE10038833A patent/DE10038833A1/de not_active Withdrawn
-
2001
- 2001-08-06 DE DE50107665T patent/DE50107665D1/de not_active Expired - Lifetime
- 2001-08-06 EP EP01118971A patent/EP1178216B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE10038833A1 (de) | 2002-02-14 |
EP1178216A3 (de) | 2004-01-02 |
EP1178216A2 (de) | 2002-02-06 |
DE50107665D1 (de) | 2006-02-23 |
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