US20190226497A1 - Impeller - Google Patents

Impeller Download PDF

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Publication number
US20190226497A1
US20190226497A1 US16/250,150 US201916250150A US2019226497A1 US 20190226497 A1 US20190226497 A1 US 20190226497A1 US 201916250150 A US201916250150 A US 201916250150A US 2019226497 A1 US2019226497 A1 US 2019226497A1
Authority
US
United States
Prior art keywords
groove portions
blade members
base plate
impeller
different
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.)
Abandoned
Application number
US16/250,150
Other languages
English (en)
Inventor
Misato Maeda
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.)
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
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 Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Assigned to AISIN SEIKI KABUSHIKI KAISHA reassignment AISIN SEIKI KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Maeda, Misato
Publication of US20190226497A1 publication Critical patent/US20190226497A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/605—Mounting; Assembling; Disassembling specially 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2205—Conventional flow pattern
    • F04D29/2222—Construction and assembly
    • 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/24—Vanes
    • F04D29/242—Geometry, shape
    • 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
    • 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
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/648—Mounting; Assembling; Disassembling of axial 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
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal 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
    • F05D2230/60—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
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/36—Retaining components in desired mutual position by a form fit connection, e.g. by interlocking

Definitions

  • the present disclosure relates to an impeller.
  • an impeller installed in an electric pump is disclosed (for example, JP 2016-23635A).
  • the impeller is mounted on a rotor included in a motor unit.
  • the impeller is configured such that end portions of a plurality of blade members included in a shroud are mounted in groove portions formed on one end face (a base plate) of he rotor.
  • the arrangement of the blade members means a circumferential-direction layout of a plurality of blade members to be mounted on a base plate.
  • the arrangement of the blade members differs depending on an inclination direction and inclination degree of the blade members when a straight line extending radially from the center of the base plate is defined as a reference.
  • groove portions for use in mounting the blade members on one end face (the base plate) of a rotor are associated with the blade members of a shroud to be mounted.
  • An impeller in embodiments includes a base plate, and a shroud including a plurality of blade members fixed to the base plate.
  • a plurality of the blade members are provided so as to stand and are arranged with intervals in a circumferential direction on a face portion of the shroud, the face portion facing the base plate.
  • a plurality of groove portions for mounting each of a plurality of the blade members are formed on the base plate, and a plurality of the groove portions are configured so as to mount each of the blade members included in a plurality of kinds of the shrouds in which at least one of an arrangement of the blade members and a number of the blade members is different from each other.
  • FIG. 1 is a perspective view of a rotor mounting an impeller.
  • FIG. 2 is a vertically cross-sectional view of the rotor mounting the impeller.
  • FIG. 3 is a explored perspective view of the impeller.
  • FIG. 4 is a plan view of a shroud.
  • FIG. 5 is a bottom view of the shroud.
  • FIG. 6 is a bottom-side perspective view of the shroud.
  • FIG. 7 is a plan view of an end portion of the rotor (a base plate).
  • FIG. 8 is a plan view of a base plate in an impeller of a second embodiment.
  • FIG. 9 is a plan view illustrating a modification example of a base plate of the second embodiment.
  • FIG. 10 is a plan view of a base plate in an impeller of a third embodiment.
  • FIGS. 1 to 3 illustrate a rotor unit A of an inner rotor type brushless motor for use in a vehicle-mounted water pump.
  • the rotor unit A is constituted of a rotor 1 for the brushless motor and an impeller 2 .
  • a magnet 3 is insertion-molded in the rotor 1 .
  • the impeller 2 includes a base plate 11 disposed at one end side of the rotor 1 , and a shroud 21 joined to the base plate 11 .
  • the base plate 11 is disposed at one end side of the rotor 1 through a joint shaft portion 4 , and is formed in a circular shape around a rotation axis X.
  • the rotor 1 including the base plate 11 and the joint shaft portion 4 is integrally molded by using a resin material.
  • a rotation shaft insertion hole 5 penetrating from the rotor 1 to the base plate 11 through the joint shaft portion 4 is formed in a central portion of the rotor unit A.
  • a bush 6 is disposed in the rotation shaft insertion hole 5 by means of a method such as press fitting and adhesive bonding, and a shaft (not illustrated) is inserted on an inner circumferential face of the bush 6 from the side of the impeller 2 .
  • the shroud 21 is concentrically provided with a cylindrical portion 23 forming a suction inlet 22 , and a circular flange portion 24 .
  • a plurality of (seven in the present embodiment) blade members 25 are disposed across from an inner circumferential face 23 a of the cylindrical portion 23 to a back face 24 a of the circular flange portion 24 .
  • a plurality of the blade members 25 are provided so as to stand and are arranged with fixed intervals in a circumferential direction along a curved shape on the inner circumferential face 23 a and the back face 24 a (an example of a face portion facing the base plate 11 ).
  • each of a plurality of the blade members 25 includes, on an end portion at a side facing the base plate 11 , an insertion piece 25 a having a rectangular cross section and being formed to protrude from the blade member 25 .
  • the base plate 11 is formed with a plurality of groove portions 12 being rectangular concave portions for use in mounting the blade members 25 by inserting a plurality of the insertion pieces 25 a .
  • the shroud 21 is fixed to the base plate 11 by welding the groove portions 12 with the insertion pieces 25 a of a plurality of the blade members 25 by means of, for example, ultrasonic welding.
  • the method of fixing the blade members 25 to the base plate 11 is not limited to the ultrasonic welding, but may be vibration welding, thermal welding, or the like.
  • a plurality of the groove portions 12 are formed so as to be capable of mounting respective blade members 25 included in each of a plurality of kinds of the shrouds 21 in which at least one of an arrangement of the blade members 25 and the number of the blade members 25 is different from each other.
  • the groove portions 12 whose number (fourteen in the present embodiment) is twice the number (seven in the present embodiment) of the blade members 25 disposed in the shroud 21 are formed on the base plate 11 .
  • the base plate 11 includes, as a plurality of (fourteen) groove portions 12 , seven first groove portions 13 associated with one of two kinds of the shrouds 21 in which arrangements of the blade members 25 are different from each other, and seven second groove portions 14 associated with the other one of the two kinds of the shrouds 21 .
  • the blade members 25 applying centrifugal force to fluid in conjunction with a rotation of the base plate 11 in one direction is defined as first blade members
  • the blade members 25 applying centrifugal force to the fluid in conjunction with a rotation of the base plate 11 in a direction for example, a direction S 2 in FIG.
  • the base plate 11 is configured to mount each of the first groove portions and the second groove portions by a plurality of the groove portions 12 .
  • the first groove portions 13 are formed so as to mount the first blade members
  • the second groove portions 14 are formed so as to mount the second blade members.
  • the first groove portions 13 and the second groove portions 14 are formed as independent grooves without intersecting with each other on the base plate 11 .
  • convex portions 13 a and 14 a are formed in a longitudinal direction, two faces of the convex portions opposite to each other being separated from each other.
  • the convex portions 13 a and 14 a have the same protrusion amount.
  • insertion pieces 25 a of the blade members 25 are press-fit into the first groove portions 13 and the second groove portions 14 .
  • the groove portions 13 and 14 provided with the convex portions 13 a and 14 a are not limited to a part of the groove portions 13 and 14 , but all the groove portions 13 and 14 may be provided with the convex portions 13 a and 14 a .
  • the groove portions 13 and 14 may not be provided with the convex portions 13 a and 14 a when the groove portions 13 and 14 are formed with a size being substantially the same as a size of the insertion pieces 25 a of the blade members 25 .
  • a plurality of the groove portions 12 of the base plate 11 are formed at positions associated with the blade members 25 included in a plurality of kinds of the shrouds 21 in which at least one of an arrangement of the blade members 25 and the number of the blade members 25 is different from each other.
  • This configuration enables a plurality of kinds of the shrouds 21 each including the blade members 25 with a different arrangement to be mounted on a single base plate 11 .
  • the base plate 11 can be shared by the blade members 25 in which at least one of an arrangement and the number of the blade members is different from each other, and thus, a manufacturing cost of the impeller 2 can be reduced,
  • each of the first groove portions 13 and each of the second groove portions 14 are independently formed without intersecting with each other.
  • each of the first groove portions 13 and each of the second groove portions 14 are formed with intersecting with each other. Note that the other configurations are the same as those of the first embodiment.
  • each of the first groove portions 13 and each of the second groove portions 14 enables narrowing of a region occupied by one groove portion 12 on the base plate 11 .
  • This allows a large number of groove portions 12 to be arranged on the base plate 11 , thereby enabling the base plate 11 to be associated with a plurality of kinds of the shrouds 21 .
  • the first groove portions 13 and the second groove portions 14 formed on the base plate 11 may be formed in such a way that, in intersecting groove portions, depths of grooves are different from each other.
  • deep groove portions are illustrated by solid lines
  • shallow groove portions are illustrated by dashed lines.
  • the first groove portions 13 and the second groove portions 14 are each formed in such a way that deep groove portions and shallow groove portions are nearly alternately arranged.
  • a plurality of the groove portions 12 may be configured in such a way that one set of groove portions (for example, the first groove portions 13 ) among a set of the first groove portions 13 and a set of the second groove portions 14 are made deep, and the other set of groove portions (for example, the second groove portions 14 ) are made shallow.
  • first groove portions 13 and second groove portions 14 are alternately arranged in the circumferential direction of the base plate 11 , and the first groove portions 13 and the second groove portions 14 are inclined toward the same direction.
  • a straight line extending outward from a rotation axis X (an example of a center of the base plate 11 ) in a radial direction of the base plate 11 is defined as a reference line L
  • inclination angles of each first groove portion 13 and each second groove portion 14 relative to the reference line L are different from each other.
  • an inclination angle of each first groove portion 13 relative to a reference line L 1 is denoted by ⁇ 1
  • an inclination angle of each second groove portion 14 relative to a reference line L 2 is denoted by ⁇ 2
  • ⁇ 1 is larger than ⁇ 2 .
  • the shroud 21 includes seven blade members 25 and seven groove portions 12 associated with the blade members 25 , respectively, are provided on the base plate 11 , but the number of the blade members 25 included in the shroud 21 may be smaller than or equal to six or larger than or equal to eight, and it is sufficient that the number of the groove portions 12 is associated with the number of the blade members 25 included in the shroud 21 .
  • a plurality of the groove portions 12 formed on the base plate 11 may be configured in such a way that the number of the first groove portions 13 is different from the number of the second groove portions 14 . This configuration enables a plurality of the groove portions 12 to be associated with a plurality of the shrouds 21 in which there is a difference in the number of the blade members 25 .
  • the set of the first groove portions 13 and the set of the second groove portions 14 may be formed so as to be respectively associated with a plurality of kinds of the shrouds 21 each including the blade members 25 with one of inclination angles ( ⁇ 1 and ⁇ 2 ) different from each other.
  • the base plate 11 there may be formed a plurality of groove portions 12 that are associated with three or more kinds of the shrouds 21 each including the blade members 25 in which at least one of an arrangement and the number of the blade members 25 is different from each other.
  • An impeller in the above-described embodiments includes a base plate, and a shroud including a plurality of blade members fixed to the base plate.
  • a plurality of the blade members are provided so as to stand and are arranged with intervals in a circumferential direction on a face portion of the shroud, the face portion facing the base plate.
  • a plurality of groove portions for mounting each of a plurality of the blade members are formed on the base plate, and a plurality of the groove portions are configured so as to mount each of the blade members included in a plurality of kinds of the shrouds in which at least one of an arrangement of the blade members and a number of the blade members is different from each other.
  • This configuration enables a plurality of kinds of the shrouds including blade members in which at least one of an arrangement and the number of the blade members is different from each other to be mounted on a single base plate. Further, the above configuration enables a plurality of kinds of the shrouds to share the base plate, and thus, a manufacturing cost of the impeller can be reduced.
  • the base plate includes, as a plurality of the groove portions, first groove portions and second groove portions respectively associated with two kinds of the shrouds in which arrangements of the blade members are different from each other.
  • first blade members blade members applying centrifugal force to fluid in conjunction with a rotation of the base plate in one direction
  • second blade members blade members applying centrifugal force to fluid in conjunction with a rotation of the base plate in a direction opposite to the one direction
  • the first groove portions are formed at positions to mount each of the first blade members
  • the second groove portions are formed at positions to mount each of the second blade members.
  • the impeller when mounting, onto the base plate, two kinds of the shrouds including blade members in which there is a difference in a direction of the blade members that applies centrifugal force to fluid by being rotated, the impeller can be constituted by mounting the blade members into the first groove portions or the second groove portions, in other words, two kinds of impellers respectively including two sets of blade members, rotation directions of which are different from each other, can be mounted and provided on a single base plate.
  • impellers, rotation directions of which are different from each other at the time of applying centrifugal force to fluid can be manufactured at low cost.
  • the base plate includes, as a plurality of the groove portions, first groove portions and second groove portions respectively associated with two kinds of the shrouds in which arrangements of the blade members are different from each other, and inclination angles of the first groove portions and the second groove portions relative to a reference line are different from each other, the reference line being a straight line extending outward from a center of the base plate in a radial direction.
  • the impeller when mounting, onto the base plate, two kinds of the shrouds including blade members each inclination direction of which relative to a reference line extending outward from a rotation axis in a radial direction is the same and an arrangement of which are different from each other, the impeller can be constituted by mounting the blade members into the first groove portions or the second groove portions.
  • two kinds of impellers including blade members each rotation direction of which is the same and inclination angles of which are different can be mounted onto a single base plate. With this configuration, impellers with the same number of rotations and a different discharge flow rate for fluid can be manufactured at low cost.
  • each of the first groove portions and each of the second groove portions are independently formed without intersecting with each other
  • first groove portions and the second groove portions can be clearly distinguished on the base plate. This facilitates alignment between the blade members of the shroud and the groove portions of the base plate at the time of mounting.
  • each of the first groove portions and each of the second groove portions are formed with intersecting with each other.
  • a region occupied by a plurality of the groove portions are narrowed on the base plate. This increases a degree of freedom in arrangement of a plurality of kinds of groove portions, as compared with a case in which the groove portions do not intersect with each other.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US16/250,150 2018-01-19 2019-01-17 Impeller Abandoned US20190226497A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-007405 2018-01-19
JP2018007405A JP2019124209A (ja) 2018-01-19 2018-01-19 インペラ

Publications (1)

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US20190226497A1 true US20190226497A1 (en) 2019-07-25

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Family Applications (1)

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US16/250,150 Abandoned US20190226497A1 (en) 2018-01-19 2019-01-17 Impeller

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JP (1) JP2019124209A (zh)
CN (1) CN110056536A (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180142696A1 (en) * 2016-11-18 2018-05-24 Sogefi Air & Cooling Systems Impeller for a fluid pump
US11473589B2 (en) * 2018-05-18 2022-10-18 Franklin Electric Co., Inc. Impeller assemblies and method of making

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102320558B1 (ko) 2020-02-18 2021-11-02 엘지전자 주식회사 임펠러 및 그 제조 방법
CN111456943B (zh) * 2020-04-10 2021-05-07 杭州中盟光电科技有限公司 一种用于新能源汽车的无刷离心泵

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US6419450B1 (en) * 2001-05-21 2002-07-16 Grundfos Pumps Manufacturing Corporation Variable width pump impeller
US20120051897A1 (en) * 2010-07-21 2012-03-01 Itt Manufacturing Enterprises, Inc. Wear Reduction Device for Rotary Solids Handling Equipment
US20140030099A1 (en) * 2012-07-27 2014-01-30 GM Global Technology Operations LLC Pump impeller
US8807939B2 (en) * 2011-06-15 2014-08-19 General Electric Company System for adjusting characteristics of a fan
US9086075B2 (en) * 2011-07-07 2015-07-21 Pentair Water Pool And Spa, Inc. Impeller assembly and method
US9719515B2 (en) * 2013-01-11 2017-08-01 Liberty Pumps, Inc. Liquid pump
US10393121B2 (en) * 2015-07-06 2019-08-27 Hangzhou Sanhua Research Institute Co., Ltd. Electrically driven pump and method for manufacturing the same
US10415582B2 (en) * 2015-07-06 2019-09-17 Hangzhou Sanhua Research Institute Co., Ltd. Electrically driven pump

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6419450B1 (en) * 2001-05-21 2002-07-16 Grundfos Pumps Manufacturing Corporation Variable width pump impeller
US20120051897A1 (en) * 2010-07-21 2012-03-01 Itt Manufacturing Enterprises, Inc. Wear Reduction Device for Rotary Solids Handling Equipment
US8807939B2 (en) * 2011-06-15 2014-08-19 General Electric Company System for adjusting characteristics of a fan
US9086075B2 (en) * 2011-07-07 2015-07-21 Pentair Water Pool And Spa, Inc. Impeller assembly and method
US20140030099A1 (en) * 2012-07-27 2014-01-30 GM Global Technology Operations LLC Pump impeller
US9719515B2 (en) * 2013-01-11 2017-08-01 Liberty Pumps, Inc. Liquid pump
US10393121B2 (en) * 2015-07-06 2019-08-27 Hangzhou Sanhua Research Institute Co., Ltd. Electrically driven pump and method for manufacturing the same
US10415582B2 (en) * 2015-07-06 2019-09-17 Hangzhou Sanhua Research Institute Co., Ltd. Electrically driven pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180142696A1 (en) * 2016-11-18 2018-05-24 Sogefi Air & Cooling Systems Impeller for a fluid pump
US11473589B2 (en) * 2018-05-18 2022-10-18 Franklin Electric Co., Inc. Impeller assemblies and method of making
US11988223B2 (en) 2018-05-18 2024-05-21 Franklin Electric Co., Inc. Impeller assemblies and method of making

Also Published As

Publication number Publication date
JP2019124209A (ja) 2019-07-25
CN110056536A (zh) 2019-07-26

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