DE102009003146A1 - Electrically driven liquid pump with a multi-part rotor and manufacturing method for such a rotor - Google Patents

Electrically driven liquid pump with a multi-part rotor and manufacturing method for such a rotor Download PDF

Info

Publication number
DE102009003146A1
DE102009003146A1 DE102009003146A DE102009003146A DE102009003146A1 DE 102009003146 A1 DE102009003146 A1 DE 102009003146A1 DE 102009003146 A DE102009003146 A DE 102009003146A DE 102009003146 A DE102009003146 A DE 102009003146A DE 102009003146 A1 DE102009003146 A1 DE 102009003146A1
Authority
DE
Germany
Prior art keywords
rotor
component
liquid pump
hydraulic
injection
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Withdrawn
Application number
DE102009003146A
Other languages
German (de)
Inventor
Christoph Heier
Bernd Hein
Jerome Thiery
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE102009003146A priority Critical patent/DE102009003146A1/en
Publication of DE102009003146A1 publication Critical patent/DE102009003146A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/02Selection of particular materials
    • F04D29/026Selection of particular materials especially adapted for liquid pumps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16Making multilayered or multicoloured articles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00Pumping installations or systems
    • F04D13/02Units comprising pumps and their driving means
    • F04D13/06Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606Canned motor pumps
    • F04D13/064Details of the magnetic circuit
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/2205Conventional flow pattern
    • F04D29/2222Construction and assembly
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2706Inner rotor
    • H02K1/272Inner rotor where the magnetisation axis of the magnets is radial or tangential
    • H02K1/2726Inner rotor where the magnetisation axis of the magnets is radial or tangential consisting of a single magnet or of a plurality of axially juxtaposed single magnets
    • H02K1/2733Annular magnets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/28Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/128Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0001Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0013Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fillers dispersed in the moulding material, e.g. metal particles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16Making multilayered or multicoloured articles
    • B29C45/1657Making multilayered or multicoloured articles using means for adhering or bonding the layers or parts to each other
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2081/00Use of polymers having sulfur, with or without nitrogen, oxygen or carbon only, in the main chain, as moulding material
    • B29K2081/04Polysulfides, e.g. PPS, i.e. polyphenylene sulfide or derivatives thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/748Machines or parts thereof not otherwise provided for
    • B29L2031/7496Pumps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/748Machines or parts thereof not otherwise provided for
    • B29L2031/7498Rotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00Manufacture
    • F05D2230/20Manufacture essentially without removing material
    • F05D2230/23Manufacture essentially without removing material by permanently joining parts together
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00Materials; Properties thereof
    • F05D2300/40Organic materials
    • F05D2300/43Synthetic polymers, e.g. plastics; Rubber

Abstract

A fluid pump (100) with an electric drive (300) is described which comprises a housing (110) and a rotor (200) arranged therein, wherein the rotor (200) has a rotor structure (211) in an electrical section (201). of the electric drive (300) and in a hydraulic section (202) forms a hydraulic impeller structure (221). The rotor (200) is composed of two interconnected components (201, 202). In this case, an electrical component (201) of the rotor (200) comprises the rotor structure (211), while a hydraulic component (202) of the rotor (200) comprises the hydraulic impeller structure (221).

Description

  • The Invention relates to a liquid pump, for example, a liquid pump for a cooling / heating circuit of a motor vehicle. Such a liquid pump has a housing a rotor disposed therein, in an electrical part of the housing a runner an electronically commutated electric motor and in a hydraulic Part of the housing an impeller structure a hydraulic pumping device forms. According to the invention Rotor formed as a two-component molded part, wherein the the runner forming electrical component of a magnetic material and the impeller structure forming hydraulic component of a liquid and temperature-resistant plastic material are formed. The invention further relates to the two-part rotor and a method of manufacturing such a rotor.
  • State of the art
  • electrical liquid pumps are known from various technical applications. Amongst other things come powered by an electronically commutated electric motor liquid pumps as water pumps in cooling and heating circuits used, for example, as a compact additional water pump in the Automotive technology. The housing such a liquid pump includes an electrical housing part with a arranged therein electric drive device and a hydraulic housing part with a pumping device arranged therein. One in both parts of the housing arranged rotor forms both a rotor of the electric drive device as well as an impeller structure the hydraulic pumping device. The rotor is powered by a magnetic interaction of the runner with one in the housing firmly arranged stand package set in rotation. For this purpose, the rotor is magnetically formed, wherein the rotor is made of a plastoferring material by means of an injection molding process generated while the desired Magnetization state of the rotor using a magnetization cage a strong magnetic field is set. The used Plastoferrit material consists of a proportion of a temperature and hydrolysis resistant plastic, for example Polyphenylene sulfide (PPS), a proportion of a hard ferrite powder as well additional Additives. The exact material composition may vary depending on the application vary.
  • by virtue of the partially conflicting requirements for the material On the hydraulic and electrical side the plastoferrit material proves to be in operation the rotor but already during its production as problematic. For example, one preferably high hard ferrite content in the Plastoferrit material for one high efficiency of the electric motor necessary. On the other hand proves the plastoferrit material with increasing hard ferrite content as increasingly brittle and less elastic. The reduced mechanical load capacity the Plastoferrit material leads to restrictions both in the design of the rotor and in its manufacture. Thus, for example, this is the optimization of the hydraulic wing structures difficult in terms of hydraulic efficiency, in usually with a filigree shape of the wing contours with partially curved wing shapes accompanied. Furthermore, due to the high proportion of hard ferrite in the Plastoferrit material also difficulties in mold filling in Spraying process, whereby different, especially in filigree structures wall thickness can occur within the part contours. Because of the associated Residual stresses, especially at high temperature fluctuations reinforced be, as well as the different Schwindungsverhaltens it can in the operation of the pump easier to crack and thus total failure of the component.
  • Finally proves a high hard ferrite due to its abrasive effect and the associated increased Tool wear too as unfavorable for the Manufacturing process of the rotor.
  • outgoing From this prior art, it is an object of the invention with a liquid pump to provide an improved rotor. This task is done by a liquid pump according to claim 1, a rotor according to claim 13 and by a method of manufacturing a rotor according to claim 14 solved.
  • Disclosure of the invention
  • According to the invention a liquid pump an electric drive and a housing having disposed therein Rotor, wherein the rotor in an electrical section a Runner of the electric drive and hydraulic in a hydraulic section impeller forms. The rotor is as a two-component molded part with a the runner structure forming electrical component and an impeller structure forming hydraulic component. Due to the two-part construction The rotor simplifies manufacturing, as in each of the two Part injection processes significantly easier molded molded parts produced become. Thus, for example, the production is particularly filigree wing structures the hydraulic side facilitates.
  • In an advantageous embodiment of the invention, it is provided that the two components have different material properties point. The first component consists of a magnetic material and the second component of a liquid and temperature-resistant plastic material. The use of different materials allows individual optimization of both rotor parts according to their respective task. In particular, a plastic material with special mechanical properties can be used for the hydraulic impeller, with the particularly filigree Flügelradkonturen can be formed. This allows a further optimization of the hydraulic side in terms of efficiency.
  • A another embodiment provides that the electrical component of the rotor from a Plastoferrit material exists. This material turns out due his sputtering ability as very suitable for creating a magnetic runner. by virtue of the separate production of electrical and hydraulic Side of the rotor it is possible a Plastoferrit material with a higher hard ferrite content use to improve the efficiency of the electric motor.
  • According to one another embodiment The hydraulic component of the rotor is polyphenylene sulfide. This material is suitable because of its injection molding and its material properties very well as material for the hydraulic rotor side. This can be desired Material properties of this plastic, such as his Sliding property or stability, especially easy by adding suitable additives even further improve.
  • A another embodiment provides that the two components using connection structures form-fitting interconnected with at least one connection structure as Driver for torque transmission between the components. Due to the positive connection will be a particularly strong connection between the two parts reached. With the help of the driver can also be a simple torque transmission will be realized. Finally leave Such connection structures are particularly easy to use realize used spraying process.
  • According to one another embodiment is the connection structure as a radially extending guide with a T-shaped Cross section formed. This cross-sectional shape allows a safe positive Connection between the parts. The axial alignment of the connection structure allows the Function as driver for transmission the torque of the rotor on the impeller.
  • A another embodiment provides that the bearing of the rotor in the housing using a plain bearing takes place, which is a a housing pin receiving axial bore in the hydraulic component. By selecting a suitable plastic material, the plain bearing without an additional Carbon bushing can be realized, reducing the manufacture of the rotor is simplified. Furthermore, it is provided that the axial bore at least partially within one in the electrical section of the rotor protruding bearing pin of the hydraulic component is trained. As a result, the storage distance is extended, which with a quiet and wear-free Storage is associated.
  • According to one another embodiment contains the material of the hydraulic component an additive that improves the sliding properties of the plain bearing. By a suitable Selection of additives can reduce the wear of the plain bearing and thus a maintenance-free sliding bearing can be realized. Provided, as in another embodiment the case, as an additive teflon, carbon fibers and / or carbon spheres used, improve the sliding properties of the bearing especially clear. By using carbon fiber as an additive Furthermore, an improvement in the mechanical strength of the hydraulic Part of the rotor achieved. In addition, the added carbon fibers can the common used to improve the mechanical properties of the rotor Replace glass fibers.
  • In a further embodiment For example, the hydraulic component includes a shielding member that extends bund shape extends around the entire circumference of the rotor. The shielding element Prevents magnetic molding sand from the coolant in the electrical Pump part passes and there is abrasive.
  • A another embodiment provides that the electrical component is essentially the shape a hollow cylinder. This simple design is simplifies the manufacturing process of the molded part. Due to the The magnetization is also particularly simple tool of the runner enormously relieved.
  • According to the invention, in the production of a rotor for the liquid pump according to the invention, first a first component of the rotor is produced from a first material. Subsequently, the second component of the rotor is produced by injecting a second material to the first component. It is advantageous to provide the first component with at least one connecting structure, which is encapsulated in the production of the second component and thereby a positive connection between the two components he testifies.
  • According to one first embodiment of the manufacturing process becomes the first component in a first Spray process produced using a first injection molding tool and subsequently inserted in a second injection mold. The second component becomes in a second injection process using the second injection mold generated. The use of separate injection molds allows an individual Optimization of the manufacturing process for each of the two parts.
  • Become however, as in another embodiment of the manufacturing process provided the two components in two consecutive Spraying processes using a common injection tool generated, wherein the first component in a pre-injection process in a first part of the spray tool and the second component in a finish-spraying process in one second part of the injection mold is produced, the manufacturing process be rationalized.
  • in the Below, the invention will be explained in more detail with reference to figures. It demonstrate:
  • 1 a liquid pump according to the prior art with a one-piece Plastoferrit rotor;
  • 2 a liquid pump according to the invention with a rotor designed as a two-component injection molded part;
  • 3 a cross-sectional view of the rotor according to the invention with an electrical part formed from Plastoferrit and formed of a plastic material hydraulic part;
  • 4 a perspective cross-sectional view of the rotor according to the invention 3 ;
  • 5 an exploded view of the rotor according to the invention;
  • 6 a detailed representations of the Plastoferrit rotor from the 5 ;
  • 7 another perspective view of the Plastoferrit rotor from the 5 with four connection structures created by means of advanced technology;
  • 8th a perspective view of the hydraulic rotor part 5 with a trunnion and four connecting structures.
  • The 1 shows a means of an electronically commutated electric motor 300 driven liquid pump 100 according to the prior art. Here is the electric motor 300 together with the hydraulic pumping device 400 in a housing 110 accommodated. The integrally formed by a injection molding process of a plastic ferrite material rotor 200 forms a runner in its electrical section 211 of the electric motor 300 and in its hydraulic section, an impeller 221 the hydraulic pumping device 400 , One between the two sections 210 . 220 of the rotor 200 angeordne ter neutral rotor section 240 acts as a shielding, which separates the electrical from the hydraulic pump side.
  • The rotor 200 is by means of a sliding bearing 230 on a fixed housing pin 103 rotatably mounted. For this purpose, the rotor body 200 a along its axis of rotation extending axial bore for receiving the housing pin 103 on. The plain bearing is by a between rotor body 200 and housing pin 103 pickled carbon bush 233 realized.
  • The controlled by a special electronics stator 310 consists of several in the electrical housing part 111 along the circumference of the runner 211 arranged electric coils. These electric coils generate during operation of the electric motor 300 a rotating magnetic field through which the rotor forming the magnetic part of the EC motor 211 is set in rotation. For this purpose, the rotor 200 molded from a Plastoferrit material and the electrical rotor section 201 magnetized during the injection process in a magnetization cage. After curing of the plastoferrite material, the hard ferrite particles oriented in the external magnetic field maintain their alignment and thus produce the desired magnetization of the rotor 211 ,
  • The shielding element 240 serves to protect the electrical side against the ingress of molding sand from the hydraulic fluid. As a sealing element serves a labyrinth area, which by a on the runner facing side of the shield 240 arranged circumferential groove 241 and one in the groove 241 correspondingly engaging circumferential structure of the housing 110 is formed.
  • The 2 shows a liquid pump according to the invention 100 with a rotor formed as a two-component injection molded part 200 , This liquid pump 100 essentially has a to that of the 1 known liquid pump analog construction. In contrast to the known rotor from the 1 consists in the two-component rotor according to the invention 200 however, only the rotor made of a Plastoferrit material. Of the hydraulic rotor section 202 that with the hydraulic rotor section 201 integrally formed shielding 240 and also with the hydraulic rotor section 201 integral bearing journals 232 On the other hand, they are made of a plastic material. As a material is basically any sprayable plastic with a high temperature and hydrolysis resistance, such as a polyphenylene sulfide (PPS). It is particularly cost-effective to use a plastic material from which already other parts of the housing 110 consist. Furthermore, special plastics can be used which have optimized properties with respect to the hydraulic application.
  • Unlike the one from the 1 known liquid pump is no additional coal bushing in the embodiment of the invention 233 for storage of the rotor 200 on the housing pin 103 intended. This is made possible in particular by eliminating the highly abrasive hard ferrite. To improve its sliding properties, the plastic material may further comprise an additive, such. As Teflon, carbon fibers or carbon spheres are added.
  • The 3 shows the rotor according to the invention 200 from the 2 in a sectional view. The rotor 200 consists essentially of two components 201 . 202 , which are formed as two separate, but interconnected molded parts. In contrast to the formed in the form of a simple ring electrical component 201 , that is the hydraulic rotor section 220 , the shielding element 240 and the journal 232 comprehensive hydraulic component 202 formed as a complex molded part. In this case, the hydraulic rotor section 220 through an impeller 221 formed, the more about a slightly tapered impeller axis 223 arranged wing structures 222 includes. The wing structures 222 of which in the 3 only two are shown, adjacent to a shielding element 240 forming plate-shaped area. The number, the distribution and the shape of the here formed as a simple blades with a polygonal profile wing structures 222 can vary depending on the application. Due to the lack of hard ferrite powder, the plastic material used has significantly improved mechanical properties compared to the plastoferror material used for the conventional rotor. The design of the wing structures is therefore no longer subject to the restrictions imposed by a high hard ferrite content. Thus, an optimized especially on the hydraulic efficiency shaping of the impeller is 221 with very delicate and curved wing structures 222 without problems possible.
  • The from the Flügelradachse 223 , a core portion of the shielding member 240 and the journal 232 formed hub has a central bore 231 for receiving the housing pin. To comply with the installation dimensions of the conventional rotor with inserted carbon bushing and thus the installation in a conventional housing 110 is possible with the rotor shown here 200 at each of the front end of the hub in each case a paragraph 234 intended.
  • In order to operate the rotor 200 also to transmit high torques between the hydraulic and the electric rotor part, is a firm connection between the two components 201 . 202 intended. This is preferably achieved by means of a positive connection. For this purpose, for example, one or more connection structures 250 on a first component produced in a first injection process 201 . 202 are provided, which are overmolded in the course of the second injection process by the material of the second component. The connection structures created in this way 250 then serve simultaneously as a driver.
  • The in the 4 shown perspective view of the rotor according to the invention 200 illustrates the special mechanical connection between the two components 201 . 202 by means of several T-shaped connecting structures 250 , The on the hydraulic component 202 molded connection structures 250 are arranged along the interface between the two components. They engage in corresponding recesses 260 of the runner 211 representing hollow cylinder. As a result, a positive connection between the two components is realized.
  • To clarify the structure of the two-component rotor 200 show the 5 an exploded view of the rotor according to the invention 200 , In this case, a total of four formed as a radially extending T-shaped guides connecting structures 250 evenly arranged along the interface between the two components. The complementary connection structures 260 of the electrical counterpart 211 are as corresponding recesses for receiving the connection structures 250 educated.
  • The manufacture of the rotor 200 preferably by means of a two-part injection molding process. Both components can do this 201 . 202 be generated in different parts of a common injection mold. In this case, first one of the two components 201 . 202 generated in the context of a pre-injection by injecting the corresponding material in a first tool part. Subsequently, the second component is in the context of a final injection by A injecting the corresponding material into a second tool part.
  • Alternatively, the preparation of the two components 201 . 202 also by using two different injection tools. In this case, in a first injection process by injecting the corresponding material into a first injection molding tool first, the first component 201 . 202 prefabricated as an intermediate and then placed in a second injection mold. Here, in a subsequent second injection process, the second component is injected by injecting the appropriate material to the prefabricated first component.
  • Which of the two components 201 . 202 generated in the first of the two Teilspritzprozesse and which component is then injected subsequently to the already existing, depends primarily on the particular application. For example, it is advantageous to use the plastoferrite rotor 211 prefabricated as an intermediate product by means of a separate injection mold equipped with a magnetic cage and the rotor 200 then by in a second injection mold by injection molding of the hydraulic component 202 finish. Thus, the magnetization cage and thus the magnetization of the rotor can be optimized.
  • The 6 and 7 show two different perspective views of the runner 211 forming electrical component 201 , It can be seen that the plastoferrite rotor 211 is formed substantially as a simple molded part in the form of a hollow cylinder. The connection points 260 are preferably formed as recesses in the hydraulic side facing the end face of the hollow cylinder. Such a recess 260 has one of the shape of the associated connection structure 250 the hydraulic component 202 corresponding geometry. In the present embodiment, the recesses 260 thus formed as T-shaped grooves. Basically, the shape of the connection structures 250 . 260 and their number and distribution vary along the circumference of the hollow cylinder depending on the application.
  • The 8th finally shows a perspective view of the hydraulic component 202 , The injection molded part, which is produced in one piece from a liquid and temperature-resistant plastic material 202 includes a hydraulic section 220 forming impeller 221 with a total of four around a central impeller axis 223 arranged wing structures 222 , a the shielding element 240 forming plate-shaped area with one of the electrical rotor side facing circumferential groove 241 and four interconnection structures uniformly arranged along the circumference 250 and a journal 232 ,
  • at the objects disclosed in the foregoing description, claims and drawings these are exemplary embodiments the invention. A person skilled in the art therefore recognizes that the invention is not only to these embodiments limited is. It can be all of the inventive aspects disclosed herein individually as well as also in combination with each other for the realization of the invention prove relevant. In particular, the special design the parts, such as the type of connection between the Components shown here by way of example only.

Claims (17)

  1. Liquid pump ( 100 ) with an electric drive ( 300 ) comprising a housing ( 110 ) and a rotor disposed therein ( 200 ), wherein the rotor ( 200 ) in an electrical section ( 210 ) a runner structure ( 211 ) of the electric drive ( 300 ) and in a hydraulic section ( 220 ) an impeller structure ( 221 ), characterized in that the rotor ( 200 ) as a two-component molded part comprising a rotor structure ( 211 ) forming electrical component ( 201 ) and one the impeller structure ( 221 ) forming hydraulic component ( 202 ) is trained.
  2. Liquid pump ( 100 ) according to claim 1, characterized in that the two components ( 201 . 202 ) have different material properties, wherein the electrical component ( 201 ) consists of a magnetic material, and wherein the hydraulic component ( 202 ) consists of a fluid and temperature resistant plastic material.
  3. Liquid pump ( 100 ) according to claim 2, characterized in that as the material of the electrical component ( 201 ) of the rotor ( 200 ) a Plastoferrit serves.
  4. Liquid pump ( 100 ) according to claim 2 or 3, characterized in that the material for the hydraulic component ( 202 ) of the rotor ( 200 ) comprises a polyphenylene sulfide.
  5. Liquid pump ( 100 ) according to one of the preceding claims, characterized in that the two components ( 201 . 202 ) using connection structures ( 250 . 260 ) are positively connected with each other, wherein at least one connection structure ( 250 ) as a driver for Drehmo transmission between the components ( 201 . 202 ) serves.
  6. Liquid pump ( 100 ) according to claim 5, characterized in that the connection structure ( 250 ) is formed as a radially extending guide with a T-shaped cross-section.
  7. Liquid pump ( 100 ) according to one of the preceding claims, characterized in that the rotor ( 200 ) by means of a sliding bearing ( 230 ), one in the hydraulic component ( 202 ) and a housing pin ( 113 ) receiving axial bore ( 231 ), in the housing ( 110 ) is stored.
  8. Liquid pump ( 100 ) according to claim 7, characterized in that the axial bore ( 231 ) at least partially within one in the electrical section ( 210 ) of the rotor extending journal ( 232 ) of the hydraulic component ( 202 ) is trained.
  9. Liquid pump ( 100 ) according to claim 7 or 8, characterized in that the material of the hydraulic component ( 202 ) contains an additive which reduces the sliding properties of the sliding bearing ( 230 ) improved.
  10. Liquid pump ( 100 ) according to claim 9, characterized in that Teflon, carbon fibers and / or carbon spheres are used as additive.
  11. Liquid pump ( 100 ) according to one of the preceding claims, characterized in that the rotor ( 200 ) a shielding element ( 240 ), which forms part of the hydraulic component ( 202 ) in a bundle around the entire circumference of the rotor ( 200 ).
  12. Liquid pump ( 100 ) according to one of the preceding claims, characterized in that the electrical component ( 201 ) has substantially the shape of a hollow cylinder.
  13. Rotor ( 200 ) for a liquid pump ( 100 ) according to one of claims 1 to 12, wherein the rotor ( 200 ) in an electrical section ( 210 ) a runner structure ( 211 ) and in a hydraulic section ( 220 ) an impeller structure ( 221 ), characterized in that the rotor ( 200 ) as a two-component molded part comprising a rotor structure ( 211 ) forming electrical component ( 201 ) and one the impeller structure ( 221 ) forming hydraulic component ( 202 ) is trained.
  14. Method for producing a rotor ( 200 ) having the features of claim 13, wherein the rotor ( 200 ) is produced by means of a two-part injection molding process as a two-component injection molding, comprising the method steps: providing a first component consisting of a first material ( 201 . 202 ) of the rotor ( 200 ), and - generating a second component ( 202 . 201 ) of the rotor ( 200 ) by injection of a second material to the first component ( 201 . 202 )
  15. Method for producing a rotor ( 200 ) according to claim 14, wherein the first component ( 201 . 202 ) at least one connection structure ( 250 . 260 ), which during injection of the second component ( 202 . 201 ) is extrusion-coated by its second material in such a way that a form-locking connection between the two components ( 201 . 202 ) is produced.
  16. A method according to claim 15, wherein the manufacture of the rotor ( 200 ) by means of two injection molds, comprising the steps: - performing a first injection process to produce the first component ( 201 . 202 ) using a first injection molding tool, - inserting the first component ( 201 . 202 ) in a second injection mold, and - performing a second injection process for producing the second component ( 202 . 201 ) using the second injection molding tool.
  17. A method according to claim 16, wherein the manufacture of the rotor ( 200 ) by means of a single injection molding tool, comprising the steps of: - performing a first injection process in a first part of the injection molding tool to produce the first component ( 201 . 202 ), - carrying out a second injection process in a second part of the injection molding tool to produce the second component ( 202 . 201 ).
DE102009003146A 2009-05-15 2009-05-15 Electrically driven liquid pump with a multi-part rotor and manufacturing method for such a rotor Withdrawn DE102009003146A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102009003146A DE102009003146A1 (en) 2009-05-15 2009-05-15 Electrically driven liquid pump with a multi-part rotor and manufacturing method for such a rotor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009003146A DE102009003146A1 (en) 2009-05-15 2009-05-15 Electrically driven liquid pump with a multi-part rotor and manufacturing method for such a rotor
PCT/EP2010/054952 WO2010130522A1 (en) 2009-05-15 2010-04-15 Electrically driven fluid pump having a multipart rotor and production method for such a rotor

Publications (1)

Publication Number Publication Date
DE102009003146A1 true DE102009003146A1 (en) 2010-11-18

Family

ID=42245647

Family Applications (1)

Application Number Title Priority Date Filing Date
DE102009003146A Withdrawn DE102009003146A1 (en) 2009-05-15 2009-05-15 Electrically driven liquid pump with a multi-part rotor and manufacturing method for such a rotor

Country Status (2)

Country Link
DE (1) DE102009003146A1 (en)
WO (1) WO2010130522A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013014140A1 (en) * 2012-12-21 2014-06-26 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Electromotive water pump
WO2015110256A1 (en) * 2014-01-24 2015-07-30 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft Würzburg Electric motor water pump
DE102015211741A1 (en) * 2015-06-24 2016-12-29 Robert Bosch Gmbh Pump with thrust washer
DE112013003549B4 (en) * 2012-07-16 2016-12-29 Magna Powertrain Of America, Inc. Electric canned water pump with structural canned and rubber outer casing
DE102015010728A1 (en) * 2015-08-17 2017-02-23 Thomas Magnete Gmbh A motor pump assembly
EP2662954A3 (en) * 2012-05-09 2017-11-22 LG Innotek Co., Ltd. Motor
DE102016118713A1 (en) * 2016-10-04 2018-04-05 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Supply unit, internal combustion engine and motor vehicle
DE102019201392A1 (en) * 2019-02-04 2020-08-06 Hanon Systems Efp Deutschland Gmbh Process for producing a rotor module and rotor module

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107542671B (en) * 2016-06-23 2020-09-15 浙江三花汽车零部件有限公司 Electronic pump

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3015334A1 (en) * 1980-04-22 1981-10-29 Bosch Gmbh Robert Light duty fan rotor wheel or bearing esp. for automobile - has high quality bushing in heavily loaded and heated bore
DE19722366A1 (en) * 1997-05-28 1998-12-03 Zahoransky Formenbau Gmbh Tooth brush body moulding machine with moulds for producing different body parts
DE19956380C1 (en) * 1999-11-24 2001-01-04 Bosch Gmbh Robert Fluid pump for vehicle cooling and heating systems has plastics motor housing with claw plates of claw pole stator formed as integral components thereof
IT1317135B1 (en) * 2000-03-08 2003-05-27 Ilpea Ind Spa Magnetic profile in plastoferrite suitable to act as a magnet for generators and electric motors.
JP2007032370A (en) * 2005-07-25 2007-02-08 Aisin Seiki Co Ltd Electric pump
DE102005039557A1 (en) * 2005-08-22 2007-03-01 Robert Bosch Gmbh rotary pump
WO2007145732A2 (en) * 2006-05-04 2007-12-21 Csp Technologies, Inc. Injection molding process for molding mechanical interlocks between molded components
DE102006034385A1 (en) * 2006-07-25 2008-01-31 Robert Bosch Gmbh Fluid pump and method for producing a fluid pump
DE102007021679A1 (en) * 2007-05-09 2008-11-13 Kraussmaffei Technologies Gmbh Method for expansion of flow with a movable cavity core, comprises latching the cavity core and producing a cavity with a first volume, injecting a first material into the cavity, and partially cooling and hardening the first material

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9847690B2 (en) 2012-05-09 2017-12-19 Lg Innotek Co., Ltd. Motor having an insulator body with guide lugs for prevention of short-circuiting
US9941765B2 (en) 2012-05-09 2018-04-10 Lg Innotek Co., Ltd. Motor
EP2662954A3 (en) * 2012-05-09 2017-11-22 LG Innotek Co., Ltd. Motor
DE112013003549B4 (en) * 2012-07-16 2016-12-29 Magna Powertrain Of America, Inc. Electric canned water pump with structural canned and rubber outer casing
DE102013014140A1 (en) * 2012-12-21 2014-06-26 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Electromotive water pump
WO2015110256A1 (en) * 2014-01-24 2015-07-30 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft Würzburg Electric motor water pump
DE102015211741A1 (en) * 2015-06-24 2016-12-29 Robert Bosch Gmbh Pump with thrust washer
DE102015010728A1 (en) * 2015-08-17 2017-02-23 Thomas Magnete Gmbh A motor pump assembly
DE102016118713A1 (en) * 2016-10-04 2018-04-05 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Supply unit, internal combustion engine and motor vehicle
DE102019201392A1 (en) * 2019-02-04 2020-08-06 Hanon Systems Efp Deutschland Gmbh Process for producing a rotor module and rotor module

Also Published As

Publication number Publication date
WO2010130522A1 (en) 2010-11-18

Similar Documents

Publication Publication Date Title
US9178394B2 (en) Rotor and manufacturing process of rotor
EP1770283B1 (en) Pump comprising an integrated motor
RU2554119C1 (en) Rotor for rotating electrical machine, rotating electrical machine and method for production of rotor for rotating electrical machine
CN103580326B (en) Rotor and motor
US6578251B2 (en) Method of fabrication of an induction motor driven seal-less pump
US6276923B1 (en) Mold for manufacturing an impeller for an axial fan
EP1987579B1 (en) Motor centrifugal pump
US4573258A (en) Method of manufacturing motor
US8482176B2 (en) Direct drive rotor with metal coupler
CN105026000B (en) Motor and its manufacture method with cooling device
KR101260626B1 (en) Permanent magnet embedded rotor for rotating electric machine and rotating electric machine
CN100541988C (en) Outer stator for reciprocating motor and manufacture method thereof
CN102459793B (en) Hinge plate for connecting a leaf or a sash to a frame so as to be hinged about a hinge axis
KR20030046313A (en) Ball screw and cycle component of the same
EP1437819A1 (en) Permanent magnet synchronous electric motor for circulation pumps of heating and conditioning systems
US9200636B2 (en) Plastic housing of a radial flow compressor
EP1081825A2 (en) Electric motor having composite encapsulated stator and rotor
JP5698224B2 (en) Magnetic coupling and split case for magnetic coupling
CN102611266B (en) The manufacture method of washing machine motor, motor for dryer, motor and rotor
JP4741665B2 (en) Slip ring component group for rotor of electric machine, electric machine with slip ring component group, and method for manufacturing slip ring component group
JP2007267593A (en) Internal permanent magnet rotor having a plurality of characteristics and its manufacturing method
US3932929A (en) Method of making a sectioned stator for a dynamoelectric machine
CN105419225A (en) Polyether-ether-ketone composite material for ultrasonic motor and preparing method thereof
ES2346063T3 (en) Method for performing a permanent magnet rotor for a synchronous engine particularly for a washer pump for industrial and domestic and similar use, and relative rotor.
CN102639877B (en) Axial fan

Legal Events

Date Code Title Description
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20121201