EP2088326A2 - Mixed flow centrifugal volute pump for swimming pools - Google Patents
Mixed flow centrifugal volute pump for swimming pools Download PDFInfo
- Publication number
- EP2088326A2 EP2088326A2 EP09380008A EP09380008A EP2088326A2 EP 2088326 A2 EP2088326 A2 EP 2088326A2 EP 09380008 A EP09380008 A EP 09380008A EP 09380008 A EP09380008 A EP 09380008A EP 2088326 A2 EP2088326 A2 EP 2088326A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- volute
- parts
- mixed flow
- swimming pools
- pump
- 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.)
- Withdrawn
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
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials 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
- F04D29/40—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
- 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
- F05D2230/20—Manufacture essentially without removing material
-
- 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 present invention relates to a mixed flow centrifugal volute pump for swimming pools, whose hydraulic body and pre-filter are materialized wholly in plastic, with the consequent advantages of less weight and lower manufacturing costs compared to conventional pump casings.
- Mixed flow centrifugal volute pump casings used in swimming pools are generally manufactured in steel and bronze, and they have a main hydraulic body in the form of an Archimedes volute and an auxiliary or pre-filter body, with the consequent coupling flanges to the motor and to the corresponding inlet and outlet.
- said pump casings are materialized in GG25 gray cast iron and to a lesser extent in RG5 marine bronze, especially recommended for seawater.
- metal pump casings are heavy, which makes them difficult to handle, above all when it comes to their assembly, packaging and transportation.
- metal pump casings particularly bronze ones, have the drawback that micropores frequently appear, with the consequent problem that this entails.
- the pump forming the object of the invention having the same dimensions as the aforementioned conventional metal pump casings made of iron and bronze, is characterized in that it is materialized in plastic (preferably polypropylene) in such a way that the volute-shaped hydraulic body is made of two independent parts obtained in an injection molding process and joined to each other around their perimeters by screws, with the insertion of a sealing gasket.
- plastic preferably polypropylene
- Each part of said hydraulic body will be obtained in a different mold, in other words, a mold with an appropriate shape for each of the two parts, in which a pre-filter body for the pump itself will also be established.
- the complete Archimedes volute is formed in the plastic material hydraulic body.
- the securing flange for the motor there existing a second securing flange in the discharge nozzle for closure of the volute.
- the pump casing of the invention is constituted by means of the joining together of two parts 1 and 2, between which a complete Archimedes volute 3 is created, with the particular feature that those two parts 1 and 2 are joined by means of a set of screws 4 passing through holes made for the purpose in the respective plates or wings for the joining of the two parts 1 and 2.
- the part 2 also has a flange 6 for coupling of the corresponding motor, while a second flange 7 is provided for its securing in the impulsion mouth as a closure element for the volute 3.
- a sealing gasket 8 Inserted in the union between the parts 1 and 2 is a sealing gasket 8 which is positioned on annular projections 9 formed for the purpose in the facing surfaces of the parts 1 and 2 which constitute the actual centrifugal pump casing.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
- As stated in the title of this descriptive specification, the present invention relates to a mixed flow centrifugal volute pump for swimming pools, whose hydraulic body and pre-filter are materialized wholly in plastic, with the consequent advantages of less weight and lower manufacturing costs compared to conventional pump casings.
- Mixed flow centrifugal volute pump casings used in swimming pools are generally manufactured in steel and bronze, and they have a main hydraulic body in the form of an Archimedes volute and an auxiliary or pre-filter body, with the consequent coupling flanges to the motor and to the corresponding inlet and outlet.
- In general, said pump casings are materialized in GG25 gray cast iron and to a lesser extent in RG5 marine bronze, especially recommended for seawater.
- These pump casings, particularly those made of gray cast iron, have always had a problem with rusting, above all when the pump is stopped for a length of time and it is wished to start it up again, in which case the initial discharge of fluid is generally rusty.
- Moreover, metal pump casings are heavy, which makes them difficult to handle, above all when it comes to their assembly, packaging and transportation.
- It can also be highlighted that metal pump casings, particularly bronze ones, have the drawback that micropores frequently appear, with the consequent problem that this entails.
- Another drawback of metal pump casings that can likewise be emphasized is that they do not meet the established safety specifications in terms of insulation of the hydraulic part and of the electrical part.
- Finally, another important aspect of metal pump casings is the appearance of the phenomenon known as "electrolysis" due to the turbine being made of bronze and the pump casing of gray cast iron, with the consequent eating away of materials.
- The pump forming the object of the invention, having the same dimensions as the aforementioned conventional metal pump casings made of iron and bronze, is characterized in that it is materialized in plastic (preferably polypropylene) in such a way that the volute-shaped hydraulic body is made of two independent parts obtained in an injection molding process and joined to each other around their perimeters by screws, with the insertion of a sealing gasket. Each part of said hydraulic body will be obtained in a different mold, in other words, a mold with an appropriate shape for each of the two parts, in which a pre-filter body for the pump itself will also be established. In other words, the complete Archimedes volute is formed in the plastic material hydraulic body.
- Likewise formed in one of the parts constituting the pump casing is the securing flange for the motor, there existing a second securing flange in the discharge nozzle for closure of the volute.
- From the constitution and characteristics of the said pump casing, a series of advantages is deduced compared to conventional pump casings, the most important of which that can be mentioned being the following:
- Lower manufacturing costs.
- Same features as pump casings made of iron and bronze.
- Improvement in hydraulic efficiency compared to conventional pump casings.
- Equal dimensioning as FD series pump casings, both in bronze and in iron, which means that the body of the pump casing can be changed without changing the installation.
- Possibility of complete insulation of the electrical part with regard to the hydraulic part.
- Suitable for seawater.
- Less weight than conventional pump casings, with the consequent saving in transportation and greater ease in handling the actual pump.
- In order to complement the description that is going to be made forthwith, and with the aim of aiding a better understanding of the characteristics of the invention, the present descriptive specification is accompanied by a set of drawings on the basis of which the innovations and advantages of the centrifugal pump forming the object of the invention will be more easily understood.
-
Figure 1 .- Shows a view in exploded general perspective of the two parts constituting the pump casing of the invention, along with the screws for fastening the two parts together and the intermediate sealing gasket. -
Figure 2 .- Shows an upper plan view of the pump casing constituted by means of the union or fastening together of the two parts represented in the previous figure. - As can be seen in the said figures, the pump casing of the invention, produced in plastic and obtained in an injection molding process, is constituted by means of the joining together of two
parts volute 3 is created, with the particular feature that those twoparts screws 4 passing through holes made for the purpose in the respective plates or wings for the joining of the twoparts - The
part 2 also has aflange 6 for coupling of the corresponding motor, while asecond flange 7 is provided for its securing in the impulsion mouth as a closure element for thevolute 3. - Inserted in the union between the
parts gasket 8 which is positioned onannular projections 9 formed for the purpose in the facing surfaces of theparts
Claims (5)
- MIXED FLOW VOLUTE CENTRIFUGAL PUMP FOR SWIMMING POOLS comprising a casing which incorporates an hydraulic body with the shape of an Archimedes volute ; characterized in that the casing comprises two independent parts (1 and 2) obtained by means of injection molding, made of a plastic material, fixed to each other around their perimeters by screws (4) and with an intermediate sealing gasket (8).
- MIXED FLOW CENTRIFUGAL PUMP FOR SWIMMING POOLS, according to claim 1, characterized in that the two parts (1 and 2), obtained in different and independent molds, have a complementary configuration in order between them to form the complete volute (3) of the hydraulic body of the casing.
- MIXED FLOW VOLUTE CENTRIFUGAL PUMP FOR SWIMMING POOLS, according to claim 1, characterized in that the plastic material constituting the two parts (1 and 2) is preferably polypropylene.
- MIXED FLOW VOLUTE CENTRIFUGAL PUMP FOR SWIMMING POOLS, according to the above claims, characterized in that one of said parts (2) includes a flange (6) for mounting of the corresponding motor.
- MIXED FLOW VOLUTE CENTRIFUGAL PUMP FOR SWIMMING POOLS, according to the above claims, characterized in it includes a flange (7) for securing in the discharge nozzle, establishing the closure of the volute (3).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200800221U ES1067274Y (en) | 2008-02-05 | 2008-02-05 | MIXED FLOW CENTRIFUGE PUMP FOR SWIMMING POOLS |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2088326A2 true EP2088326A2 (en) | 2009-08-12 |
EP2088326A3 EP2088326A3 (en) | 2014-05-21 |
Family
ID=39316251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09380008.4A Withdrawn EP2088326A3 (en) | 2008-02-05 | 2009-01-26 | Mixed flow centrifugal volute pump for swimming pools |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2088326A3 (en) |
ES (1) | ES1067274Y (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2713058A1 (en) * | 2012-09-26 | 2014-04-02 | Pierburg Pump Technology GmbH | Pump head for a centrifugal pump and method for producing such a pump head |
ITUB20153948A1 (en) * | 2015-09-28 | 2017-03-28 | Dab Pumps Spa | PERFECT STRUCTURE OF CENTRIFUGAL ELECTRIC PUMP AND WALL FOR A SIMILAR PUMP |
EP2455616A3 (en) * | 2010-11-23 | 2017-08-23 | Desarrollos Empresariales Valar, S.L. | Mixed flow centrifugal pump for swimming pools |
CN108953227A (en) * | 2018-07-03 | 2018-12-07 | 浙江融乐环境科技有限公司 | A kind of water inlet pedestal of large pump |
EP3904694A4 (en) * | 2019-01-25 | 2022-11-09 | Sang Seon Lee | Casing capable of preventing distortion, and pump including same |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3304875A (en) * | 1965-02-23 | 1967-02-21 | Aetna Chemical Corp | Pump |
US3630645A (en) * | 1969-10-17 | 1971-12-28 | Gunther Eheim | Encapsulated rotatable electric motor and rotatable fluid pump assembly |
US3664760A (en) * | 1970-09-02 | 1972-05-23 | Coleco Ind Inc | Centrifugal pump |
US3826589A (en) * | 1972-06-22 | 1974-07-30 | Sta Rite Industries | Plastic pump construction |
DE4444968A1 (en) * | 1994-12-16 | 1996-06-20 | Klein Schanzlin & Becker Ag | Centrifugal pump housing with plastic inner housing |
-
2008
- 2008-02-05 ES ES200800221U patent/ES1067274Y/en not_active Expired - Fee Related
-
2009
- 2009-01-26 EP EP09380008.4A patent/EP2088326A3/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3304875A (en) * | 1965-02-23 | 1967-02-21 | Aetna Chemical Corp | Pump |
US3630645A (en) * | 1969-10-17 | 1971-12-28 | Gunther Eheim | Encapsulated rotatable electric motor and rotatable fluid pump assembly |
US3664760A (en) * | 1970-09-02 | 1972-05-23 | Coleco Ind Inc | Centrifugal pump |
US3826589A (en) * | 1972-06-22 | 1974-07-30 | Sta Rite Industries | Plastic pump construction |
DE4444968A1 (en) * | 1994-12-16 | 1996-06-20 | Klein Schanzlin & Becker Ag | Centrifugal pump housing with plastic inner housing |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2455616A3 (en) * | 2010-11-23 | 2017-08-23 | Desarrollos Empresariales Valar, S.L. | Mixed flow centrifugal pump for swimming pools |
EP2713058A1 (en) * | 2012-09-26 | 2014-04-02 | Pierburg Pump Technology GmbH | Pump head for a centrifugal pump and method for producing such a pump head |
ITUB20153948A1 (en) * | 2015-09-28 | 2017-03-28 | Dab Pumps Spa | PERFECT STRUCTURE OF CENTRIFUGAL ELECTRIC PUMP AND WALL FOR A SIMILAR PUMP |
US10859086B2 (en) | 2015-09-28 | 2020-12-08 | Dab Pumps, S.P.A. | Centrifugal electric pump and volute for such an electric pump |
CN108953227A (en) * | 2018-07-03 | 2018-12-07 | 浙江融乐环境科技有限公司 | A kind of water inlet pedestal of large pump |
EP3904694A4 (en) * | 2019-01-25 | 2022-11-09 | Sang Seon Lee | Casing capable of preventing distortion, and pump including same |
Also Published As
Publication number | Publication date |
---|---|
ES1067274U (en) | 2008-05-01 |
ES1067274Y (en) | 2008-08-01 |
EP2088326A3 (en) | 2014-05-21 |
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