EP1178216A2 - Pumpengehäuse mit Verbindungsstegen - Google Patents
Pumpengehäuse mit Verbindungsstegen Download PDFInfo
- Publication number
- EP1178216A2 EP1178216A2 EP01118971A EP01118971A EP1178216A2 EP 1178216 A2 EP1178216 A2 EP 1178216A2 EP 01118971 A EP01118971 A EP 01118971A EP 01118971 A EP01118971 A EP 01118971A EP 1178216 A2 EP1178216 A2 EP 1178216A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- pump housing
- pump
- connecting web
- impeller
- 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.)
- Granted
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 for a centrifugal pump, with a pump chamber that has an impeller space to accommodate the pump impeller and the impeller space outside spiral space, which over a Entry area is connected to the impeller compartment.
- Pump housings of this type are generally known in centrifugal pumps.
- the pump housing usually has a coaxial Impeller axis aligned intake manifold and one at the end of the Spiral space arranged pressure nozzle.
- the impeller space is expanded in the radial and / or axial direction.
- a tongue separates the impeller space from the spiral space that has grown to its maximum extent or from the pressure port.
- the circumferential direction next to this tongue extends the entrance area that the impeller space with the Spiral space connects, over almost the entire scope of the Impeller chamber.
- a deformation of the housing geometry due to the static pressure and the internal pressure of the hydraulics leads to further disadvantages, in particular to reduce the hydraulic efficiency.
- To achieve high hydraulic efficiency can, it is necessary that between the impeller and the Pump housing has a defined gap. Will this gap too large due to the pressure between the two parts, the hydraulic efficiency drops significantly.
- the object of the invention is therefore to provide a structurally simple and Pump housing of the aforementioned type which can be produced inexpensively Way to create that with low weight permanently high Strength and great rigidity and thus an optimal one has hydraulic efficiency.
- this object is achieved by a pump housing Claim 1 solved. It is essential that in the entry area at least one connecting web is arranged, which is between the axially opposite housing walls of the pump housing extends and attached to both housing walls is.
- the main advantage is that in particular Large-volume pump housings Deformation of the housing geometry also from lighter materials such as plastic manufactured pump housings can be significantly reduced.
- the connecting webs can be manufactured and assembled inexpensively be and they are very light weight compared to that the weight saving in the pump housing due to a lighter material is negligible. Overall, there is one significant weight reduction of the pump housing achievable.
- the connecting web (s) on one or both sides of the housing walls of the pump housing is or are cast on.
- the connecting webs can be directly in the core tool integrated and on both sides of the pump housing be cast on or molded.
- Embodiment of the invention consists of the pump housing two axially abutting housing halves, the Connecting webs integrally formed on a first housing half are.
- Such housing halves can also be molded Connecting bridges made particularly simple and inexpensive become. All connecting bars can either be connected to only one Half of the housing or alternately on one or the other Half of the housing be molded.
- the attachment of the connecting webs to the second half of the housing can be cohesive, for example, in particular by a Welded or adhesive connection.
- the connecting webs on the second Half of the housing non-positively and / or positively, in particular are attached via an elastic snap connection. This is particularly easy and quick to assemble.
- the Pump housing also consists of two axially abutting housing halves exist, the connecting webs as separate Elements on both housing halves are cohesive, non-positive and / or positively, in particular via snap connections are attached.
- the connecting web is round or oval in cross section.
- the connecting web in cross-section the shape a profile rod or a profiled guide vane or one Has wing. It is preferably proposed that the connecting web in cross section the shape of a guide vane or a wing with a curved profile or with a Has drop profile.
- the angle of the profile to the impeller blades can the fluidic requirements of the desired use of the centrifugal pump can be adjusted.
- the pump housing 1 shown in Figure 1 consists of two axially adjacent halves 2 and 3.
- the first half 2 lies with its outside on the not shown Motor housing of the drive motor of the pump.
- the second half of the case 3 lies sealed against the motor housing Side on the first housing half 2 and thus closes the Pump chamber in the interior of the pump housing 1 from tight.
- the second housing half 3 has a coaxial to the motor axis Intake manifold 4, in which the pump impeller, not shown receiving impeller chamber 5 opens. Radially outside the Impeller space 5 extends the spiral space 6, the diameter increases continuously over the circumference of the impeller space 5. On the end of the spiral space 6 opens into the tangentially extending Pressure port 7. The transition from spiral room 6 to the pressure port 7 is separated from the impeller chamber 5 by a tongue 8.
- the entry area 9 extends through which the impeller chamber 5 is connected to the spiral chamber 6, via almost the entire circumference of the impeller chamber 5.
- connecting webs 10 are arranged in the entry area forming the spiral entry 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 such that they are each about 120 ° with respect to the tongue 8 are offset in the circumferential direction.
- the connecting webs 10 are on the first made of plastic Half of housing 2 cast in one piece.
- the attachment to the second housing half 3 is shown in the two in Figure 1 Crosspieces 10 a and 10 b exemplarily designed differently.
- the connecting web 10 a shown above is on his free end via an elastic snap connection 14 positive attached to a projection 15 of the second housing half 3.
- the Free end of the connecting web 10 a is on the projection beveled side, so that easy assembly of the pump housing 1 by axially sliding the second Housing half 3 can take place on the first housing half 2.
- the Connecting web 10 a springs slightly elastically outwards, until the snap connection 14 in the fully assembled position the housing half 3 springs back and engages.
- the connecting web 10 b shown in the lower half of the drawing lies with a projection 16 at its free end in a corresponding Recess of the second housing half 3. additionally is the free end of the connecting web 10 b by one not closer welded connection shown cohesively on the second Half of the housing 3 attached.
- the pump housing 1 also receives high pressure loads permanently high strength and high Rigidity.
- the first housing half 2 is additionally by the adjacent motor wall supported.
- In the area of the connecting bridges 10 are in particular axial deformations of the second housing half 3 and thus the pump housing 1 excluded, so that for optimal hydraulic efficiency required gap between the pump impeller and the pump housing 1 permanently can be met.
- the pump housing 1 shown in Figures 3 to 5 consists of two axially abutting housing halves 2 and 3. On both Housing halves 2 and 3 are each a plurality of connecting webs 10 molded, the connecting webs 10 in the circumferential direction in each case alternately on one 2 or the other 3 housing halves are cast on. When installing the pump housing 1 the connecting webs 10 on the other half of the housing glued. Alternatively, the free ends of the connecting webs 10 but also be provided with an elastic snap connection and by hooking on the other half of the housing 2, 3 be attached.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
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, mit einer Pumpenkammer, die einen Laufradraum zur Aufnahme des Pumpenlaufrades und einen den Laufradraum außen umgebenden Spiralraum umfaßt, der über einen Eintrittsbereich mit dem Laufradraum 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 each 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 true EP1178216A2 (de) | 2002-02-06 |
EP1178216A3 EP1178216A3 (de) | 2004-01-02 |
EP1178216B1 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) |
Cited By (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 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4052133A (en) * | 1975-11-12 | 1977-10-04 | The Gorman-Rupp Company | Corrosion and abrasion resistant centrifugal pump |
DE29708610U1 (de) * | 1997-05-15 | 1997-07-10 | Winter GmbH, 63512 Hainburg | Gehäuse mit einem unregelmäßigen Hohlraum |
US6095771A (en) * | 1995-12-30 | 2000-08-01 | Robert Bosch Gmbh | Fuel-feed unit |
Family Cites Families (5)
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 |
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 |
-
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
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4052133A (en) * | 1975-11-12 | 1977-10-04 | The Gorman-Rupp Company | Corrosion and abrasion resistant centrifugal pump |
US6095771A (en) * | 1995-12-30 | 2000-08-01 | Robert Bosch Gmbh | Fuel-feed unit |
DE29708610U1 (de) * | 1997-05-15 | 1997-07-10 | Winter GmbH, 63512 Hainburg | Gehäuse mit einem unregelmäßigen Hohlraum |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 010, no. 191 (M-495), 4. Juli 1986 (1986-07-04) & JP 61 035218 A (HITACHI LTD), 19. Februar 1986 (1986-02-19) * |
Cited By (3)
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 |
CN106555780A (zh) * | 2015-09-28 | 2017-04-05 | 戴博邦浦股份有限公司 | 离心式电动泵以及用于这种电动泵的蜗壳 |
US10859086B2 (en) | 2015-09-28 | 2020-12-08 | Dab Pumps, S.P.A. | Centrifugal electric pump and volute for such an electric pump |
Also Published As
Publication number | Publication date |
---|---|
DE10038833A1 (de) | 2002-02-14 |
EP1178216A3 (de) | 2004-01-02 |
EP1178216B1 (de) | 2005-10-12 |
DE50107665D1 (de) | 2006-02-23 |
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