CN109519390B - Pump assembly with quick assembly - Google Patents

Pump assembly with quick assembly Download PDF

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Publication number
CN109519390B
CN109519390B CN201810966264.0A CN201810966264A CN109519390B CN 109519390 B CN109519390 B CN 109519390B CN 201810966264 A CN201810966264 A CN 201810966264A CN 109519390 B CN109519390 B CN 109519390B
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CN
China
Prior art keywords
pump assembly
centrifugal pump
electrical box
stator housing
electrical
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.)
Active
Application number
CN201810966264.0A
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Chinese (zh)
Other versions
CN109519390A (en
Inventor
F·思尼克
米歇尔·卡波钦
斯特凡诺·塔兹欧里
皮艾特罗·凯洛托
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.)
DAB Pumps SpA
Original Assignee
DAB Pumps SpA
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Filing date
Publication date
Application filed by DAB Pumps SpA filed Critical DAB Pumps SpA
Publication of CN109519390A publication Critical patent/CN109519390A/en
Application granted granted Critical
Publication of CN109519390B publication Critical patent/CN109519390B/en
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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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal 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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/0626—Details of the can
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0686—Mechanical details of the pump control unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor 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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • 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
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The application discloses a pump assembly with quick assembly. A centrifugal pump assembly (10) having an electric motor (19) arranged in a stator housing (11), wherein a tank (13) containing an electrical board (14) is arranged at one end of the stator housing (11), comprising an intermediate element (16) between the motor (19) and the tank (13), which intermediate element (16) is complementary to the stator housing (11) on one side and to the tank (13) on the other side. The intermediate element (16) is a covering and/or connecting element.

Description

Pump assembly with quick assembly
Technical Field
The present invention relates to a centrifugal pump assembly having an electric motor.
The invention also relates to a cover and/or connection element for such a centrifugal pump assembly with an electric motor.
Background
The centrifugal pump assemblies currently known are substantially constituted by a hollow body provided with suction and delivery ducts and containing one or more impellers staggered by diffusers and keyed on the shaft of an electric motor enclosed in a motor casing that isolates it from the pumped liquid.
An electrical board contained within the case powers and controls the operation of the motor.
In some cases, there are cover elements around the housing and the electrical box that are adapted to hold the pump assembly together.
These known techniques have drawbacks and aspects that can be improved.
The electric motor and the electric box are generally fixed by using screws, which determine the expenditure of time and costs for the supply of the product and for its maintenance.
The covering elements, if any, are also fixed by means of screws, which determines the expenditure of time and costs for the supply of the product and for its maintenance.
Furthermore, the covering element (if present) is not a structural element, but serves only as an aesthetic element.
Disclosure of Invention
It is an object of the present invention to provide a centrifugal pump assembly with an electric motor that improves upon the background of one or more of the above aspects.
Based on this aim, an object of the present invention is to provide a centrifugal pump assembly with an electric motor, which comprises an intermediate covering and/or connecting element between the electric motor and the electric tank.
It is another object of the present invention to provide a centrifugal pump assembly with an electric motor, wherein the cover and/or connecting element is fixed to the assembly by reducing the costs and time required for assembling and maintaining the product.
It is a further object of the present invention to provide a centrifugal pump assembly with an electric motor, wherein the cover and/or connecting element is customizable and has a good visual effect.
It is another object of the present invention to provide a centrifugal pump assembly having an electric motor that includes elements capable of at least partially protecting a user from heat generated in the electric motor housing.
It is a further object of the present invention to overcome the disadvantages of the background art in a manner that is an alternative to any of the existing solutions.
It is another object of the present invention to provide a centrifugal pump assembly having an electric motor that is highly reliable, relatively easy to provide, and cost competitive.
This aim and these and other objects, which will become better apparent hereinafter, are achieved by a centrifugal pump assembly having an electric motor arranged in a stator casing, wherein a tank containing an electric board is arranged at one end of said stator casing, characterized in that it comprises, between said motor and said tank, an intermediate element adapted to be integral therewith, which is adapted to be complementary on one side to said stator and on the other side to said tank.
Drawings
Further characteristics and advantages of the invention will become more apparent from the description of a preferred but not exclusive embodiment of a centrifugal pump assembly with electric motor according to the invention, illustrated by way of non-limiting example in the accompanying drawings, in which:
FIG. 1 is an exploded view of a pump assembly according to the present invention;
FIG. 2 is a cross-sectional view of the pump assembly of FIG. 1;
FIG. 3 is a sectional view of a detail of a pump assembly according to the present invention.
Detailed Description
Referring to the figures, a centrifugal pump assembly having an electric motor in accordance with the present invention is generally indicated by reference numeral 10.
The centrifugal pump assembly 10 comprises a wet zone having suction and delivery ducts (not shown in the figures) of known type and an impeller (also not shown in the figures) of known type immersed in the wet zone.
The impeller is keyed on the shaft 17 of an electric motor 19 consisting of a stator 12 and a rotor 18. The electric motor is placed in a stator housing 11, which stator housing 11 is adapted to insulate the electric motor from wet areas.
The centrifugal pump assembly 10 comprises at one end an electrical box 13, which electrical box 13 contains an electrical board 14 adapted to control and power an electric motor 19. The electrical box 13 has a cylindrical shape and is closed at the free end by a cover 15.
In particular, the electric motor 19 and the electric box 13 extend along the same axis X, which coincides with the rotation axis of the motor and of the impeller. Due to the presence of the intermediate element 16, the electric motor 19 and the electric box 13 are connected and present as one piece. The intermediate element 16 is a connecting and/or covering element and has a tubular shape.
The intermediate element 16 is made of a plastic material and has on its surface some projecting portions which can be customized. At the same time, the color of the intermediate element 16 may also be customized to create a good visual effect for the user.
The intermediate element 16 is peculiar in the type of fixing to the electric box 13 and to the stator housing 11. In fact, the connecting element 16 has a part adapted to be complementary on one side to a part of the electrical box 13 and on the other side to a part of the stator housing 11, the coupling being generated by interlocking with interference.
Advantageously, the intermediate element 16 may even fix the box 13 to the stator housing in a different way.
With reference to fig. 2, the intermediate element 16 has a seat and/or a hole 20 suitable for the insertion of a projection 21, which projection 21 is conveniently shaped on a plane lateral and parallel to the axis X of rotation of the impeller of the electrical box 13, so as to create the interlock.
Also, with reference to figure 3, on the intermediate element 16, on the inner tubular surface there are elements, such as for example teeth 22, suitable for generating interference with elements, such as for example projections 23, the elements, such as projections 23, being conveniently shaped on the surface of the stator housing 11, which is external to and parallel to the axis X of rotation of the impeller.
The intermediate element 16 has such dimensions as to at least partially cover the box 13 and the stator housing 11. In a structural variant, the intermediate element 16 covers the box 13 on one side and the stator housing 11 until reaching the portion connected thereto.
In particular, the electrical box 13 and the stator housing 11 have mutually complementary contact surfaces. One or more first pins 28 extend from the electrical box 13, the one or more first pins 28 being adapted to be inserted in respective through holes 29 present on the contact surface of the stator housing 11. The pin 28 is adapted to connect the tank 13 and the housing 11 and facilitate assembly of the pump 10.
Likewise, the box 13 has one or more second pins 30, which second pins 30 extend inside the box 13 and in the direction of the cover 15, the tips of which are adapted to be inserted in corresponding holes present on the surface of the cover 15, towards the inside of the box 13. The pin 30 is adapted to connect the tank 13 and the cover 15 and facilitate assembly of the pump 10.
A male connection plate 24 extends from the electrical plate 14 and is adapted to enter a female terminal 25 connected to the electric motor 19. In this way, the board 14 can power and control the electric motor 19.
The electrical board 14 has a connector 26 at one end, the connector 26 being adapted to be inserted into a power terminal external to the pump. At the insertion region of said terminal, the box 13 has a tab 27 projecting with respect to the intermediate element 16.
The stator housing 11 has, at the end opposite to the end intended to come into contact with the electrical box 13, a peripheral annular tab 31, which tab 31 has a plurality of through holes 32 suitable for the insertion of screws 34, which screws 34 are intended to fix the stator housing 11 to the body of said suction and delivery duct, which is not visible in the figures.
Inside the electric box 13 there is provided a tubular body 34, which tubular body 34 has an axis of extension coinciding with the axis X.
Advantageously, the tubular body 34 may have an extension that is not coincident with the axis X but parallel thereto.
The tubular body 34 extends from the surface in contact with the stator housing 11 to the cover 15 of the electrical box 13. At the cross section of the tubular body 34, both the electric plate 14 and the cover 15 have a through hole 36, the through hole 36 having an axis of extension coinciding with the axis X. The through hole 36 and the tubular body 34 are adapted for the insertion of a venting or inspection plug 35 having an end in contact with the wet area. The tubular body 34 and the hole 36 of the cover 15 have a size and shape such as to ensure interference and isolation of the electrical board 14 from wet areas, even in the event of ventilation.
The seal between the wet area and the plug 35 is ensured by an O-ring 37 of known type, and the seal between the wet area, the electric box 13 and the stator housing 11 is ensured by a gasket 38 of known type.
The gasket 38 is co-molded on the tank 13.
It should be noted that the intermediate element 16 according to the invention allows to connect and present the electric motor 19 and the electrical box 13 as one piece by means of a simple interlock, without the use of fixing screws, thus reducing the times of operation and assembly and the maintenance costs.
Furthermore, it should be noted that said intermediate element 16 partially protects the user from the heat generated by the motor 19 on the stator housing 11 during operation.
It should also be noted that the intermediate element 16 allows customization in terms of shape and in terms of colour, generating good visual effects.
In practice it has been found that the invention achieves the intended aim and objects by providing a centrifugal pump assembly having an electric motor arranged in a stator housing, wherein a tank is arranged at one end of said stator housing, and comprising an intermediate element between the motor and the tank, suitable for being integrated therewith, complementary on one side to the stator and complementary on the other side to the tank.
The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims; all the details may further be replaced with other technically equivalent elements.
In practice, the materials used, provided they are compatible with the specific use, as well as the contingent shapes and dimensions, may be any according to requirements and to the state of the art.

Claims (19)

1. Centrifugal pump assembly (10), the centrifugal pump assembly (10) having an electric motor (19) arranged in a stator housing (11), wherein an electric tank (13) containing an electric board (14) is arranged at one end of the stator housing (11), characterized in that the centrifugal pump assembly comprises an intermediate element (16) between the electric motor (19) and the electric tank (13) adapted to be integrated therewith, the intermediate element (16) being complementary on one side to the stator housing (11) and on the other side to the electric tank (13),
wherein the electrical box (13) has one or more first pins (28) adapted to be inserted in corresponding through holes (29) present on the contact surface of the stator housing (11),
wherein the electrical box (13) has one or more second pins (30) extending inside the electrical box (13) and in the direction of an end cap (15) of the electrical box, the tips of the one or more second pins being adapted to be inserted in corresponding holes present on the surface of the end cap (15) facing the inside of the electrical box (13),
wherein the electrical box (13) is internally provided with a tubular body (34) having an axis of extension coinciding with or parallel to the axis of extension of the electrical box (13),
wherein the tubular body (34) has an extension from a surface in contact with the stator housing (11) to the end cap (15) of the electrical box (13).
2. Centrifugal pump assembly (10) according to claim 1, wherein the intermediate element (16) is a tubular covering and/or connecting element.
3. Centrifugal pump assembly (10) according to claim 2, characterized in that the covering and/or connecting element is provided with a part adapted to complement on one side a part of the electrical box (13) and on the other side a part of the stator housing (11), the coupling being generated by interlocking with interference.
4. Centrifugal pump assembly (10) according to claim 2, characterized in that said covering and/or connecting element is provided with seats and/or holes (20) suitable for the insertion of projections (21) of the side surface of the electrical box (13), so as to create an interlock.
5. Centrifugal pump assembly (10) according to claim 2, characterized in that the covering and/or connecting element is provided with teeth (22) on the inner tubular surface, the teeth (22) being adapted to generate interference with protrusions (23) of the outer lateral surface of the stator housing (11).
6. Centrifugal pump assembly (10) according to any one of claims 1-5, characterized in that the electrical box (13) has a cylindrical extension and the end cover (15).
7. Centrifugal pump assembly (10) according to any one of claims 1-5, characterized in that the electrical box (13) and the stator housing (11) have mutually complementary contact surfaces.
8. Centrifugal pump assembly (10) according to claim 6, wherein the electrical box (13) and the stator housing (11) have mutually complementary contact surfaces.
9. Centrifugal pump assembly (10) according to any one of claims 1-5 and 8, characterized in that the electric plate (14) is provided with a male connection plate (24) adapted to enter a female terminal (25) connected to the electric motor (19).
10. Centrifugal pump assembly (10) according to claim 6, characterized in that the electric plate (14) is provided with a male connection plate (24) adapted to enter a female terminal (25) connected to the electric motor (19).
11. The centrifugal pump assembly (10) according to claim 7, wherein the electric plate (14) is provided with a male connection plate (24) adapted to enter a female terminal (25) connected to the electric motor (19).
12. Centrifugal pump assembly (10) according to any one of claims 1-5, 8 and 10-11, characterized in that the electrical board (14) has a connector (26) on one end, which is adapted to be inserted in an electrical power terminal external to the pump.
13. Centrifugal pump assembly (10) according to claim 6, characterized in that the electrical board (14) has a connector (26) on one end, which is adapted to be inserted in an electrical power terminal external to the pump.
14. The centrifugal pump assembly (10) of claim 7, wherein the electrical board (14) has a connector (26) on one end adapted to be inserted into a power terminal external to the pump.
15. Centrifugal pump assembly (10) according to claim 9, characterized in that the electrical board (14) has a connector (26) on one end, which is adapted to be inserted in an electrical power terminal external to the pump.
16. Centrifugal pump assembly (10) according to claim 12, characterized in that at the insertion region of the power terminals, the electrical box (13) has tabs (27) projecting with respect to the intermediate element (16).
17. Centrifugal pump assembly (10) according to any one of claims 13-15, characterized in that the electrical box (13) has, at the insertion region of the power terminals, a tab (27) projecting with respect to the intermediate element (16).
18. Centrifugal pump assembly (10) according to claim 1, wherein, at the cross section of the tubular body (34), the electric plate (14) and the end cover (15) both have a through hole (36) having an axis of extension coinciding with the axis of extension of the tubular body (34).
19. Centrifugal pump assembly (10) according to claim 18, wherein the through hole (36) and the tubular body (34) are adapted for insertion of a drain plug or an inspection plug (35).
CN201810966264.0A 2017-09-18 2018-08-23 Pump assembly with quick assembly Active CN109519390B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102017000103807 2017-09-18
IT102017000103807A IT201700103807A1 (en) 2017-09-18 2017-09-18 QUICK ASSEMBLY PUMP ASSEMBLED

Publications (2)

Publication Number Publication Date
CN109519390A CN109519390A (en) 2019-03-26
CN109519390B true CN109519390B (en) 2021-10-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810966264.0A Active CN109519390B (en) 2017-09-18 2018-08-23 Pump assembly with quick assembly

Country Status (8)

Country Link
US (1) US20190085848A1 (en)
CN (1) CN109519390B (en)
DE (1) DE102018121252A1 (en)
FR (1) FR3071280B1 (en)
GB (1) GB2567935B (en)
IT (1) IT201700103807A1 (en)
PL (1) PL234004B1 (en)
SI (1) SI25519A (en)

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CN113106707A (en) * 2021-04-13 2021-07-13 无锡好力泵业有限公司 Washing machine frequency conversion drain pump and washing machine

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Publication number Priority date Publication date Assignee Title
US4705983A (en) * 1984-03-23 1987-11-10 Robert Bosch Gmbh Easily serviceable alternator, particularly for vehicular use
JPH09209975A (en) * 1996-09-05 1997-08-12 Hitachi Ltd Submergible motor
CN102338098A (en) * 2010-07-14 2012-02-01 爱信精机株式会社 Electric pump
EP2738391A1 (en) * 2012-11-28 2014-06-04 Pierburg Pump Technology GmbH Electric coolant pump
CN203481966U (en) * 2013-08-27 2014-03-12 昆山联华印务有限公司 Multiple-insulation filtering motor for pool

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Publication number Publication date
CN109519390A (en) 2019-03-26
IT201700103807A1 (en) 2019-03-18
PL234004B1 (en) 2019-12-31
GB201814045D0 (en) 2018-10-10
SI25519A (en) 2019-03-29
PL426927A1 (en) 2019-03-25
FR3071280A1 (en) 2019-03-22
GB2567935A (en) 2019-05-01
GB2567935B (en) 2020-06-03
US20190085848A1 (en) 2019-03-21
FR3071280B1 (en) 2021-04-02
DE102018121252A1 (en) 2019-03-21

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