EP0516637B1 - Boitier helicoidal en tole - Google Patents

Boitier helicoidal en tole Download PDF

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Publication number
EP0516637B1
EP0516637B1 EP91902958A EP91902958A EP0516637B1 EP 0516637 B1 EP0516637 B1 EP 0516637B1 EP 91902958 A EP91902958 A EP 91902958A EP 91902958 A EP91902958 A EP 91902958A EP 0516637 B1 EP0516637 B1 EP 0516637B1
Authority
EP
European Patent Office
Prior art keywords
spiral
housing
impeller
pump
pump housing
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
Application number
EP91902958A
Other languages
German (de)
English (en)
Other versions
EP0516637A1 (fr
Inventor
Rolf Scherer
Jörg STARKE
Primo Lovisetto
Giuliano Franco Matteazzi
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.)
KSB AG
Original Assignee
KSB AG
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 KSB AG filed Critical KSB AG
Publication of EP0516637A1 publication Critical patent/EP0516637A1/fr
Application granted granted Critical
Publication of EP0516637B1 publication Critical patent/EP0516637B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D29/4266—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps made of sheet metal

Definitions

  • the invention relates to a spiral housing according to the preamble of the main claim.
  • Spiral housings are often used for centrifugal pumps of radial and semi-axial design. These are easy to manufacture in a cast construction, but difficult to manufacture in sheet metal housings. Due to the dominant deep-drawing technique in sheet metal construction, spiral housings that extend in the radial direction and have an increasing cross-sectional widening over the circumference can hardly be formed.
  • a solution to this is shown in DE-OS 20 47 501, in which the impeller of a centrifugal pump is followed by a housing with an annular space that is easy to manufacture.
  • a housing cover arranged on the pressure side has a spiral shape that extends in the axial direction, which results in a spiral space that changes in the axial direction after assembly is complete.
  • this is a compromise solution, the effectiveness of which cannot be compared to a radially extending spiral shape.
  • significant hydraulic advantages have emerged in pump housings with a radial spiral.
  • DE-GM 18 92 493 shows a spiral housing, which consists of two semicircular housing halves with different radii in plan view and are mounted offset from one another by the difference in their radius. A welded connection is made at the abutting edges. Appropriate installation of the impeller creates a spiral space.
  • the object of the invention is to develop a spiral housing which can be produced in a less complex manner for a centrifugal pump made from non-cutting components. This object is achieved in accordance with the characterizing part of the main claim.
  • the spiral space which is designed as a separate component, can thus be provided with a uniform inner diameter, which allows the spiral space to be attached to a pump housing, for example drawn in a pot shape, and fastened in the region of the impeller outlet.
  • a pump housing for example drawn in a pot shape, and fastened in the region of the impeller outlet.
  • the pump housing is provided with one or more openings in a housing region opposite the impeller outlet and that the spiral space envelops the openings and is tightly connected to the pump housing and that the spiral space is pushed onto the pump housing.
  • the spiral space is arranged between two pump housing parts located on both sides of the impeller and is tightly connected to them.
  • the pump housing can be shaped as a pot housing with or without a molded suction nozzle and can be separated into two parts in front of or behind the impeller level by a cutting process.
  • the mutually facing interfaces of the pot housing can then be connected in a known manner to the side walls of the spiral space running in the radial direction.
  • Claims 5 to 8 describe configurations which have as their object the manufacture of the spiral space.
  • the spiral space can be placed around the actual pump housing as a one-piece or multi-part belt-shaped component.
  • refinements of claims 9 to 12 relate to the pump housing design.
  • the suction and pressure side housing parts are connected to one another by axially extending webs. It is also possible to distribute the webs as independent components over the circumference of the housing and to arrange the suction and pressure-side housing parts to connect them.
  • the webs can also be part of a one-piece pump housing having suction and pressure side housing parts. However, the webs can also be a space between a plurality of punched-in openings for the passage of the flow medium. For better flow guidance, the webs can be provided with an angle of attack relative to a circumferential tangent.
  • Fig. 1 shows a spiral housing in section.
  • this consists of a suction-side pump housing part (1) on which a suction nozzle (2) is molded at the same time.
  • the suction nozzle (2) has a connection flange (3).
  • a pressure-side pump housing part (4) is provided with further flange surfaces (5) for connection to a bearing bracket, block motor or the like, not shown here.
  • the suction-side and pressure-side pump housing parts (1, 4) can each be manufactured as rotationally symmetrical deep-drawn parts. It is also readily possible to manufacture parts (1) and (4) as a one-piece deep-drawn part, which is then separated in the region of the end face (6) to form a liquid outlet.
  • the second housing part thus formed namely the pump housing part (4) on the pressure side, is mounted at a distance from the housing part (1) on the suction side, and the connection between the two parts is made by a separate spiral space (7).
  • the parts are connected to one another with the aid of circumferential weld seams (8, 9).
  • the entry opening (10) into the spiral space (7) can thus be reached in the simplest manner by correspondingly positioning the parts relative to one another.
  • the entry opening (10) into the spiral space (7) can also consist of a plurality of entry openings (10) which are distributed around the circumference and form bridges that support cohesion between them .
  • FIG. 2 differs from FIG. 1 in that here the spiral space (7) is arranged between two pump housing parts (1, 4) and is connected to them.
  • Fig. 3 corresponds to a view along the line III-III of Fig. 1.
  • the spiral space (7) provided with a variable cross-section has been formed in this embodiment in such a way that a band-shaped part with increasing U-shaped Cross-section was formed, at the ends (11, 12) of which two half-shells forming the pressure connection (13) are formed. These are welded together along the parting line (14).
  • the spiral space (7) formed in this way can be attached to the outside diameter of the suction and / or pressure-side pump housing part (1, 4) and fastened there using known techniques.
  • Fig. 4 shows a development of the area of the inlet opening (10) in the spiral space (7) which is located between the suction and pressure side pump housing parts (1, 4).
  • the latter are connected by a plurality of webs (16) which are arranged at a distance from one another and bridge the entry opening (10).
  • the latter are welded to the housing parts in this exemplary embodiment, but any other known type of fastening can also be used.
  • Fig. 5 shows an embodiment in which the suction and pressure side housing halves (1, 4) are part of a single housing.
  • the passage openings (10) for the pumped medium emerging from the impeller are created here by rectangular punched-outs which extend over the circumference are distributed and spaced from each other. Webs (16) remaining between the openings (10) serve to stiffen the housing.
  • FIG. 6 Another type of punched-out area for the passage openings (10) is shown in FIG. 6.
  • the opening (10) is U-shaped, whereby a tongue-like element (17) remains in addition to the webs (16).
  • the tongues (17) can be bent up so that a conveying medium flowing out of the impeller flows through the passage openings (10) in a guided form.
  • FIG. 8 A variant of this is shown in FIG. 8.
  • the punched-outs for the passage opening (10) here have an H-shaped contour. This results in two tongues (17, 18) which can be bent inwards and outwards according to the section in FIG. 9 in order to obtain an even better guidance or stator-like design.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Decoration Of Textiles (AREA)
  • Wrappers (AREA)
  • Supports Or Holders For Household Use (AREA)

Claims (12)

  1. Colimaçon pour une pompe circulaire de construction en tôle comprenant une chambre en volute en aval d'une roue de construction indépendante et un boîtier de pompe positionnant la chambre en volute caractérisé en ce que le diamètre interne de la chambre en volute (7) correspond au diamètre externe du boîtier de la pompe (1, 4) et en ce que le diamètre externe du boîtier de la pompe (1, 4) est légèrement supérieur au diamètre externe de la roue.
  2. Colimaçon selon la revendication 1 caractérisé en ce que le boîtier de la pompe (1, 4) est muni d'une ou de plusieurs ouvertures (10) dans la zone du boîtier opposée à la sortie de la roue et que la chambre en volute (7) enveloppe les ouvertures (10) et qu'elle est reliée étroitement au boîtier de la pompe (1, 4).
  3. Colimaçon selon les revendications 1 et 2 caractérisé en ce que la chambre en volute (7) est poussée sur le boîtier de la pompe (1, 4).
  4. Colimaçon selon les revendications 1 et 2 caractérisé en ce que la chambre en volute (7) est placée entre deux pièces du boîtier de la pompe (1, 4) situées de chacun des côtés de roue et est étroitement reliée à celles-ci.
  5. Colimaçon selon les revendications 1 à 4 caractérisé en ce que la chambre en volute (7) forme un élément annulaire découpé dont le plan de séparation (14) est situé dans la zone de la tubulure de refoulement (13).
  6. Colimaçon selon la revendication 5 caractérisé en ce que des pièces moulées formant la tubulure de refoulement sont placées aux extrêmités opposées (11, 12) de l'élément annulaire
  7. Colimaçon selon les revendications 5 et 6 caractérisé en ce que les extrêmités (11, 12) de l'élément annulaire sont reliées à une pièce moulée formant la tubulure de refoulement.
  8. Colimaçon selon les revendications 1 à 4 caractérisé en ce que plusieurs segments ayant chacun une section croissante en U et reliés entre eux forment la chambre en volute (7).
  9. Colimaçon selon une ou plusieurs des revendications 1 à 8 caractérisé en ce que des pièces du boîtier de la pompe (1, 4) situés de chaque côté de la roue sont reliées entre elles par des barrettes (16) réparties sur la circonférence.
  10. Colimaçon selon la revendication 9 caractérisé en ce que les barrettes (16) sont des éléments de construction indépendants.
  11. Colimaçon selon la revendication 9 caractérisé en ce que des ouvertures (10) réparties sur la circonférence du boîtier de la pompe (1, 4) et placées dans la zone de sortie de le roue ainsi que de la chambre en volute (7) forment, entre elles, des barrettes (16).
  12. Colimaçon selon les revendications 9 à 11 caractérisé en ce que les barrettes (16) forment avec une tangente à la circonférence un angle d'incidence.
EP91902958A 1990-02-22 1991-02-01 Boitier helicoidal en tole Expired - Lifetime EP0516637B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4005640 1990-02-22
DE4005640A DE4005640A1 (de) 1990-02-22 1990-02-22 Spiralgehaeuse in blechbauweise
PCT/EP1991/000190 WO1991013260A1 (fr) 1990-02-22 1991-02-01 Boitier helicoidal en tole

Publications (2)

Publication Number Publication Date
EP0516637A1 EP0516637A1 (fr) 1992-12-09
EP0516637B1 true EP0516637B1 (fr) 1994-09-14

Family

ID=6400769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91902958A Expired - Lifetime EP0516637B1 (fr) 1990-02-22 1991-02-01 Boitier helicoidal en tole

Country Status (8)

Country Link
EP (1) EP0516637B1 (fr)
JP (1) JPH0647999B2 (fr)
CN (1) CN1023246C (fr)
AT (1) ATE111567T1 (fr)
CA (1) CA2076523A1 (fr)
DE (2) DE4005640A1 (fr)
ES (1) ES2064085T3 (fr)
WO (1) WO1991013260A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235744A (en) * 1989-07-05 1993-08-17 Ebara Corporation Method of manufacturing a centrifugal pump casing
DE4330098A1 (de) * 1993-09-06 1995-03-09 Klein Schanzlin & Becker Ag Als Blechformteil ausgebildete Leiteinrichtung
DE19534258C2 (de) * 1995-09-15 1998-06-04 Tuchenhagen Otto Gmbh Gehäuse für eine Kreiselpumpe
WO1999030040A1 (fr) * 1997-12-08 1999-06-17 Ebara Corporation Dispositif de pompage forme par traitement de feuille metallique
CN1325801C (zh) * 1997-12-08 2007-07-11 株式会社荏原制作所 板金加工的泵装置
DE10038833A1 (de) * 2000-08-04 2002-02-14 Wilo Gmbh Pumpengehäuse mit Verbindungsstegen
DE102005036347A1 (de) * 2005-07-29 2007-02-01 Ksb Aktiengesellschaft Elektromotor mit koaxial zugeordneter Pumpe
CN101749275B (zh) * 2008-12-18 2012-01-25 阳江市新力工业有限公司 改进结构的冲压焊接离心泵
EP2546525B1 (fr) * 2011-07-13 2017-03-29 Oase GmbH Pompe centrifuge dotée d'un boîtier à spirales

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1066149B (fr) * 1959-09-24
US1109393A (en) * 1913-05-01 1914-09-01 Camden Iron Works Centrifugal pump.
CH309294A (de) * 1951-12-15 1955-08-31 Reinecke Hans Gehäuse für Kreiselpumpen.
US2786261A (en) * 1952-10-28 1957-03-26 Garrett Corp Method of forming passage structure
US3018736A (en) * 1954-01-04 1962-01-30 Hetherington & Berner Inc Dredge pump
US2994348A (en) * 1957-09-11 1961-08-01 Dominion Bridge Co Ltd Method of reinforcing and welding toroidal or spiral shaped vessels
DE1892493U (de) * 1963-12-13 1964-05-06 Franz Klaus Maschinen Und Appb Spiralgehaeuse einer kreiselpumpe.
FR1563797A (fr) * 1968-01-12 1969-04-18
DE2047501A1 (de) * 1970-09-26 1972-03-30 Philipp Hilge Fa Spiralgehäuse
CH540435A (de) * 1971-06-25 1973-08-15 Brechbuehl Fa Heinrich Zentrifugalventilator
DD118145A1 (fr) * 1974-09-20 1976-02-12
SE401718B (sv) * 1976-09-28 1978-05-22 Karlstad Mekaniska Ab Stagkrans for ett spiralskap till en hydraulisk maskin
US4247250A (en) * 1979-09-04 1981-01-27 Allis-Chalmers Corporation Fabricated pump casing
DE3008672A1 (de) * 1980-03-06 1981-09-17 Philipp Hilge Gmbh, 6501 Bodenheim Normalsaugende radial-kreiselpumpe
DE3517498C3 (de) * 1985-05-15 1993-12-02 Klein Schanzlin & Becker Ag Kreiselpumpengehäuse
DE4001383A1 (de) * 1989-01-19 1990-07-26 Ebara Corp Pumpengehaeuse

Also Published As

Publication number Publication date
WO1991013260A1 (fr) 1991-09-05
ATE111567T1 (de) 1994-09-15
EP0516637A1 (fr) 1992-12-09
CN1054298A (zh) 1991-09-04
DE59102950D1 (de) 1994-10-20
CN1023246C (zh) 1993-12-22
CA2076523A1 (fr) 1991-08-23
JPH0647999B2 (ja) 1994-06-22
DE4005640A1 (de) 1991-08-29
ES2064085T3 (es) 1995-01-16
JPH05504184A (ja) 1993-07-01

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