EP0516637B1 - Spiral housing made of sheet steel - Google Patents
Spiral housing made of sheet steel Download PDFInfo
- 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
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- 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
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- 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.
Abstract
Description
Die Erfindung betrifft ein Spiralgehäuse gemäß dem Oberbegriff des Hauptanspruches.The invention relates to a spiral housing according to the preamble of the main claim.
Bei Kreiselpumpen radialer und halbaxialer Bauart finden häufig Spiralgehäuse Anwendung. Diese lassen sich bei einer Gußkonstruktion leicht, bei Gehäusen in Blechbauweise jedoch schwer herstellen. Bedingt durch die bei der Blechbauweise dominierende Tiefziehtechnik können in radialer Richtung sich erstreckende, über den Umfang eine zunehmende Querschnittserweiterung aufweisende Spiralgehäuse kaum geformt werden. Eine Lösung hierzu zeigt die DE-OS 20 47 501, bei der dem Laufrad einer Kreiselpumpe ein Gehäuse mit einem einfach herzustellenden Ringraum nachgeordnet ist. Ein druckseitig angeordneter Gehäusedeckel verfügt über eine sich in axialer Richtung erstreckende Spiralform, wodurch sich nach vollendeter Montage ein in axialer Richtung verändernder Spiralraum ergibt. Hierbei handelt es sich jedoch um eine Kompromißlösung, deren Effektivität mit einer sich radial erstreckenden Spiralform nicht vergleichbar ist. Insbesondere bei Laufrädern höherer spezifischer Drehzahl haben sich bei Pumpengehäusen mit radial verlaufender Spirale deutliche hydraulische Vorteile herauskristallisiert.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. However, this is a compromise solution, the effectiveness of which cannot be compared to a radially extending spiral shape. Particularly in the case of impellers with a higher specific speed, significant hydraulic advantages have emerged in pump housings with a radial spiral.
Eine andere Lösung zeigt die DE-OS 30 08 672. In ein Ringraumgehäuse wird eine aus einem Rohr geformte Spirale eingelegt, wodurch innerhalb des Ringraumgehäuses ein Spiralraum entsteht. Abstützelemente verbinden den Spiralraum mit dem umgebenden flüssigkeitsdichten Ringraumgehäuse. Diese Bauart ist sehr materialintensiv und aufwendig in der Herstellung.Another solution is shown in DE-OS 30 08 672. A spiral formed from a tube is inserted into an annular space housing, as a result of which a spiral space is created within the annular space housing. Support elements connect the spiral space with the surrounding liquid-tight annulus housing. This design is very material-intensive and complex to manufacture.
Das DE-GM 18 92 493 zeigt ein Spiralgehäuse, welches aus zwei in der Draufsicht halbkreisförmigen Gehäusehälften mit unterschiedlichen Radien besteht und um die Differenz ihrer Halbmesser gegeneinander versetzt montiert sind. An den aneinanderstoßenden Kanten erfolgt eine Schweißverbindung. Durch entsprechende Montage des Laufrades ergibt sich ein Spiralraum.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.
Der Erfindung liegt die Aufgabe zugrunde, für eine aus spanlos geformten Bauteilen gefertigte Kreiselpumpe ein in wenig aufwendiger Weise herstellbares Spiralgehäuse zu entwickeln. Die Lösung dieser Aufgabe erfolgt gemäß dem kennzeichnenden Teil des Hauptanspruches.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.
Somit kann der als separates Bauteil ausgebildete Spiralraum mit einem einheitlichen Innendurchmesser versehen werden, der es erlaubt, den Spiralraum an einem beispielsweise topfförmig gezogenen Pumpengehäuse anzubringen und im Bereich des Laufradaustrittes zu befestigen. Hierzu sehen Ausgestaltungen der Erfindung vor, daß das Pumpengehäuse in einem dem Laufradaustritt gegenüberliegenden Gehäusebereich mit einer oder mehreren Öffnungen versehen ist und daß der Spiralraum die Öffnungen umhüllt und dicht mit dem Pumpengehäuse verbunden ist und daß der Spiralraum auf das Pumpengehäuse aufgeschoben ist.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. For this purpose, embodiments of the invention provide that 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.
Nach einer anderen Ausgestaltung der Erfindung ist der Spiralraum zwischen zwei, beiderseits des Laufrades befindlichen Pumpengehäuseteilen angeordnet und dicht mit diesen verbunden.According to another embodiment of the invention, the spiral space is arranged between two pump housing parts located on both sides of the impeller and is tightly connected to them.
Das Pumpengehäuse kann hierbei als Topfgehäuse mit oder ohne angeformten Saugstutzen geformt werden und vor oder hinter der Laufradebene durch einen Schneidvorgang in zwei Teile getrennt werden. Die einander zugekehrten Schnittstellen des Topfgehäuses lassen sich dann in bekannter Weise mit den in radialer Richtung verlaufenden Seitenwänden des Spiralraumes verbinden.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.
Die Ansprüche 5 bis 8 beschreiben Ausgestaltungen, die die Herstellung des Spiralraumes zum Gegenstand haben. Der Spiralraum kann als ein- oder mehrteiliges gürtelförmiges Bauteil um das eigentliche Pumpengehäuse herum gelegt werden. Und die Ausgestaltungen der Ansprüche 9 bis 12 betreffen die Pumpengehäuse-Ausbildung.
Im Bereich des Spiralraumes sind die saug- und druckseitigen Gehäuseteile durch axial verlaufende Stege miteinander verbunden. Auch ist es möglich, die Stege als eigenständige Bauteile über den Umfang des Gehäuses verteilt sowie saug- und druckseitige Gehäuseteile miteinander verbindend anzuordnen. Auch können die Stege Bestandteil eines einteiligen, saug- und druckseitige Gehäuseteile aufweisenden Pumpengehäuses sein. Die Stege können aber auch Zwischenraum zwischen mehreren eingestanzten Öffnungen für den Durchtritt des Strömungsmediums sein. Zur besseren Strömungsführung können die Stege gegenüber einer Umfangstangenten mit einem Anstellwinkel versehen sein.In the area of the spiral space, 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.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher beschrieben. Die
- Fig. 1 und 2
- zeigen Schnitte durch die Längsachse von Spiralgehäusen, die
- Fig. 3
- einen Schnitt quer zur Drehachse durch das Spiralgehäuse und die
- Fig. 4 bis 9
- verschiedene Ausbildungen der Verbindungen des Pumpengehäuses im Bereich des Spiralraumes.
- 1 and 2
- show sections through the longitudinal axis of volute casing, the
- Fig. 3
- a section transverse to the axis of rotation through the volute and the
- 4 to 9
- different designs of the connections of the pump housing in the area of the spiral space.
Die Fig. 1 zeigt ein Spiralgehäuse im Schnitt. Dies besteht in dem gezeigten Beispiel aus einem saugseitigen Pumpengehäuseteil (1), an dem gleichzeitig ein Saugstutzen (2) angeformt ist. Zur Verbindung mit einer Rohrleitung verfügt der Saugstutzen (2) über einen Anschlußflansch (3). Ein druckseitiger Pumpengehäuseteil (4) ist mit weiteren Flanschflächen (5) zur Verbindung mit einem hier nicht dargestellten Lagerstuhl, Blockmotor oder dgl. versehen. Das saugseitige und druckseitige Pumpengehäuseteil (1, 4) sind jeweils als rotationssymmetrische Tiefziehteile herstellbar. Es ist auch ohne weiteres möglich, das Teil (1) und (4) als ein einteiliges Tiefziehteil herzustellen, welches dann im Bereich der Stirnfläche (6) zur Bildung eines Flüssigkeitsaustrittes aufgetrennt wird. Das dadurch gebildete zweite Gehäuseteil, nämlich das druckseitige Pumpengehäuseteil (4) wird mit Abstand zum saugseitigen Gehäuseteil (1) montiert und die Verbindung zwischen beiden Teilen erfolgt durch einen separat erstellten Spiralraum (7). Mit Hilfe umlaufender Schweißnähte (8, 9) erfolgt die Verbindung der Teile untereinander. Somit kann die Eintrittsöffnung (10) in den Spiralraum (7) in einfachster Weise durch entsprechende Positionierung der Teile zueinander erreicht werden.Fig. 1 shows a spiral housing in section. In the example shown, this consists of a suction-side pump housing part (1) on which a suction nozzle (2) is molded at the same time. For connection to a pipeline, 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.
Wie den weiter unten aufgeführten Figuren 4 bis 9 zu entnehmen ist, kann die Eintrittsöffnung (10) in den Spiralraum (7) auch aus mehreren Eintrittsöffnungen (10) bestehen, die über den Umfang zueinander verteilt angeordnet werden und zwischen sich einen Zusammenhalt unterstützende Stege ausbilden.As can be seen from FIGS. 4 to 9 listed below, 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 .
Die in der Fig. 2 gezeigte Ausführungsform unterscheidet sich zu der Fig. 1 dadurch, daß hier der Spiralraum (7) zwischen zwei Pumpengehäuseteilen (1, 4) angeordnet und mit diesen verbunden ist.The embodiment shown in 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.
Die Fig. 3 entspricht einer Ansicht gemäß der Linie III-III aus Fig. 1. Der mit einem über den Umfang veränderlichen Querschnitt versehene Spiralraum (7) ist in diesem Ausführungsbeispiel in der Weise gebildet worden, daß ein bandförmiges Teil mit zunehmendem U-förmigem Querschnitt geformt wurde, an dessen Enden (11, 12) zwei den Druckstutzen (13) bildende Halbschalen angeformt sind. Diese werden entlang der Trennfuge (14) schweißtechnisch miteinander verbunden. Der so gebildete Spiralraum (7) kann auf dem Außendurchmesser des saug- und/oder druckseitigen Pumpengehäuseteiles (1, 4) angebracht und dort mittels bekannter Techniken befestigt werden. An dem Druckstutzen (13), dessen Querschnitt sich diffusorförmig erweitert, sind in einfachster Weise Anschlußflansche (15), vgl. Fig. 1, anbringbar.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. On the pressure port (13), the cross section of which widens in a diffuser shape, there are connecting flanges (15) in the simplest manner, cf. Fig. 1, attachable.
Die Fig. 4 zeigt eine Abwicklung des Bereiches der Eintrittsöffnung (10) in dem Spiralraum (7) welche sich zwischen den saug- und druckseitigen Pumpengehäuseteilen (1, 4) befindet. Letzterer werden durch mehrere im Abstand zueinander angeordnete und die Eintrittsöffnung (10) überbrückende Stege (16) verbunden. Letztere sind in diesem Ausführungsbeispiel mit den Gehäuseteilen verschweißt, es ist aber auch jede andere bekannte Befestigungsart verwendbar.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.
Die Fig. 5 zeigt eine Ausführungsform, bei der die saug- und druckseitige Gehäusehälften (1, 4) Bestandteil eines einzigen Gehäuses sind. Die Durchtrittsöffnungen (10) für das aus dem Laufrad austretende Fördermedium sind hierbei durch rechteckige Ausstanzungen entstanden, welche über den Umfang verteilt und mit Abstand zueinander angeordnet sind. Zwischen den Öffnungen (10) verbleibende Stege (16) dienen der Gehäuseversteifung.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.
Eine andere Art der Ausstanzungen für die Durchtrittsöffnungen (10) zeigt die Fig. 6. Die Öffnung (10) ist U-förmig ausgebildet, wodurch neben den Stegen (16) ein zungenähnliches Element (17) bestehen bleibt.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).
Wie dem Schnitt in Fig. 7 zu entnehmen ist, können die Zungen (17) hochgebogen werden, so daß ein aus dem Laufrad ausströmendes Fördermedium in geleiteter Form durch die Durchtrittsöffnungen (10) hindurchströmt.As can be seen from the section in FIG. 7, 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.
Eine Abart hiervon zeigt die Fig. 8. Die Ausstanzungen für die Durchtrittsöffnung (10) weisen hier eine H-förmige Kontur auf. Somit entstehen zwei Zungen (17, 18), welche gemäß dem Schnitt in Fig. 9 nach innen und außen gebogen werden können, um somit eine noch bessere Führung bzw. leitradähnliche Gestaltung zu erhalten.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.
Claims (12)
- A spiral housing for a centrifugal pump of sheet metal construction consisting of a spiral chamber, which is arranged downstream from an impeller and is in the form of an independent component, and a pump housing positioning the spiral chamber, characterized in that the internal diameter of the spiral chamber (7) is equal to the external diameter of the pump housing and the external diameter of the pump housing (1 and 4) is insubstantially larger than the external diameter of the impeller.
- The spiral housing as claimed in claim 1, characterized in that in a housing part opposite to the outlet of the impeller the pump housing (1 and 4) is provided with one or more opening (10) and in that the spiral chamber (7) is placed around the openings (10) and is sealingly connected with the pump housing (1 and 4).
- The spiral housing as claimed in claim 1 and claim 2, characterized in that the spiral housing (7) is slipped over and onto the pump housing (1 and 4).
- The spiral housing as claimed in claim 1 and claim 2, characterized in that the spiral chamber (7) is arranged between two pump housing parts (1 and 4) located on the two sides of the impeller and is sealingly connected with the same.
- The spiral housing as claimed in claims 1 through 4, characterized in that a severed ring element constitutes the spiral chamber (7), the plane (14) of separation of the element being adjacent to the delivery connect (13).
- The spiral housing as claimed in claim 5, characterized in that the mutually opposite ends (11 and 12) of the ring element have recesses formed therein which constitute the delivery connection of the pump.
- The spiral housing as claimed in claims 5 and 6, characterized in that the ends (11 and 12) of the ring element are connected with a molded part constituting the delivery connection.
- The spiral housing as claimed in the claims 1 through 4, characterized in that a plurality of segments, which each have a widening U-like cross section and are connected together, constitute the spiral chamber (7).
- The spiral housing as claimed in any one of the preceding claims 1 through 8, characterized in that pump housing parts (1 and 4) located on either side of the impeller are connected together by ribs (16) which are distributed along the periphery and are connected together.
- The spiral housing as claimed in claim 9, characterized in that the ribs (16) are constituted by independent components.
- The spiral housing as claimed in claim 9, characterized in that openings (10) are provided which are distributed adjacent to the impeller outlet and the spiral housing (7), between which the ribs (16) are formed.
- The spiral housing as claimed in claims 9 through 11, characterized in that the ribs (16) are set at an angle of attack in relation to a tangent to the periphery.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4005640A DE4005640A1 (en) | 1990-02-22 | 1990-02-22 | SPIRAL CASE IN SHEET DESIGN |
| DE4005640 | 1990-02-22 | ||
| PCT/EP1991/000190 WO1991013260A1 (en) | 1990-02-22 | 1991-02-01 | Spiral housing made of sheet steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0516637A1 EP0516637A1 (en) | 1992-12-09 |
| EP0516637B1 true EP0516637B1 (en) | 1994-09-14 |
Family
ID=6400769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91902958A Expired - Lifetime EP0516637B1 (en) | 1990-02-22 | 1991-02-01 | Spiral housing made of sheet steel |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0516637B1 (en) |
| JP (1) | JPH0647999B2 (en) |
| CN (1) | CN1023246C (en) |
| AT (1) | ATE111567T1 (en) |
| CA (1) | CA2076523A1 (en) |
| DE (2) | DE4005640A1 (en) |
| ES (1) | ES2064085T3 (en) |
| WO (1) | WO1991013260A1 (en) |
Families Citing this family (9)
| 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 (en) * | 1993-09-06 | 1995-03-09 | Klein Schanzlin & Becker Ag | Guide device designed as a molded sheet metal part |
| DE19534258C2 (en) * | 1995-09-15 | 1998-06-04 | Tuchenhagen Otto Gmbh | Housing for a centrifugal pump |
| WO1999030040A1 (en) * | 1997-12-08 | 1999-06-17 | Ebara Corporation | Pumping device formed by sheet-metal working |
| CN1128937C (en) * | 1997-12-08 | 2003-11-26 | 株式会社荏原制作所 | Pumping device method by sheet-metal working |
| DE10038833A1 (en) * | 2000-08-04 | 2002-02-14 | Wilo Gmbh | Pump housing with connecting bars |
| DE102005036347A1 (en) * | 2005-07-29 | 2007-02-01 | Ksb Aktiengesellschaft | Electric motor for power plant system, has flywheel with heavy-metal insert, where heavy metal with specified density forms insert and is arranged in insert such that flywheel body has high-strength material |
| CN101749275B (en) * | 2008-12-18 | 2012-01-25 | 阳江市新力工业有限公司 | Stamping-welded centrifugal pump with improved structure |
| EP2546525B1 (en) * | 2011-07-13 | 2017-03-29 | Oase GmbH | Circulation pump with spiral housing |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1066149B (en) * | 1959-09-24 | |||
| US1109393A (en) * | 1913-05-01 | 1914-09-01 | Camden Iron Works | Centrifugal pump. |
| CH309294A (en) * | 1951-12-15 | 1955-08-31 | Reinecke Hans | Housing for centrifugal pumps. |
| 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 (en) * | 1963-12-13 | 1964-05-06 | Franz Klaus Maschinen Und Appb | SPIRAL CASE OF A CENTRIFUGAL PUMP. |
| FR1563797A (en) * | 1968-01-12 | 1969-04-18 | ||
| DE2047501A1 (en) * | 1970-09-26 | 1972-03-30 | Philipp Hilge Fa | Volute casing |
| CH540435A (en) * | 1971-06-25 | 1973-08-15 | Brechbuehl Fa Heinrich | Centrifugal fan |
| DD118145A1 (en) * | 1974-09-20 | 1976-02-12 | ||
| SE401718B (en) * | 1976-09-28 | 1978-05-22 | Karlstad Mekaniska Ab | STAG WRENCH FOR A SPIRAL CABINET FOR A HYDRAULIC MACHINE |
| US4247250A (en) * | 1979-09-04 | 1981-01-27 | Allis-Chalmers Corporation | Fabricated pump casing |
| DE3008672A1 (en) * | 1980-03-06 | 1981-09-17 | Philipp Hilge Gmbh, 6501 Bodenheim | Centrifugal pump has housing with central inlet - and separate spiral duct with radial outlet fixed inside housing around impeller |
| DE3517498C3 (en) * | 1985-05-15 | 1993-12-02 | Klein Schanzlin & Becker Ag | Centrifugal pump housing |
| DE69003955T2 (en) * | 1989-01-19 | 1994-02-17 | Ebara Corp | Pump housing. |
-
1990
- 1990-02-22 DE DE4005640A patent/DE4005640A1/en not_active Withdrawn
-
1991
- 1991-02-01 WO PCT/EP1991/000190 patent/WO1991013260A1/en active IP Right Grant
- 1991-02-01 DE DE59102950T patent/DE59102950D1/en not_active Expired - Fee Related
- 1991-02-01 JP JP3503100A patent/JPH0647999B2/en not_active Expired - Lifetime
- 1991-02-01 AT AT91902958T patent/ATE111567T1/en not_active IP Right Cessation
- 1991-02-01 EP EP91902958A patent/EP0516637B1/en not_active Expired - Lifetime
- 1991-02-01 ES ES91902958T patent/ES2064085T3/en not_active Expired - Lifetime
- 1991-02-01 CA CA002076523A patent/CA2076523A1/en not_active Abandoned
- 1991-02-21 CN CN91101083.1A patent/CN1023246C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1054298A (en) | 1991-09-04 |
| DE59102950D1 (en) | 1994-10-20 |
| CN1023246C (en) | 1993-12-22 |
| ES2064085T3 (en) | 1995-01-16 |
| JPH05504184A (en) | 1993-07-01 |
| ATE111567T1 (en) | 1994-09-15 |
| WO1991013260A1 (en) | 1991-09-05 |
| JPH0647999B2 (en) | 1994-06-22 |
| EP0516637A1 (en) | 1992-12-09 |
| CA2076523A1 (en) | 1991-08-23 |
| DE4005640A1 (en) | 1991-08-29 |
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