EP2314881A1 - Pump - Google Patents

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Publication number
EP2314881A1
EP2314881A1 EP09770060A EP09770060A EP2314881A1 EP 2314881 A1 EP2314881 A1 EP 2314881A1 EP 09770060 A EP09770060 A EP 09770060A EP 09770060 A EP09770060 A EP 09770060A EP 2314881 A1 EP2314881 A1 EP 2314881A1
Authority
EP
European Patent Office
Prior art keywords
switch valve
impeller
outlet
central axis
enclosed space
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Withdrawn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
EP09770060A
Other languages
German (de)
English (en)
French (fr)
Inventor
Ryohei Tokunaga
Masahiro Hirata
Hidetoshi Ueda
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.)
Panasonic Corp
Original Assignee
Panasonic Electric Works 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 Panasonic Electric Works Co Ltd filed Critical Panasonic Electric Works Co Ltd
Publication of EP2314881A1 publication Critical patent/EP2314881A1/en
Withdrawn legal-status Critical Current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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/48—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible 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
    • 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/48—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps
    • F04D29/486—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps especially adapted for liquid pumps

Definitions

  • the invention relates generally to pumps and, more particularly, to a volute pump configured to select one of first and second outlets to drain a fluid (e.g., liquid, gas, etc.) through the selected one.
  • a fluid e.g., liquid, gas, etc.
  • Japanese Patent Application Publication No. H10-141287 published on May 26, 1998 discloses a heated water circulating pump.
  • This pump includes a casing (a pump housing), an impeller and a switch valve (a plate).
  • the casing has a circular enclosed space, an inlet and first and second outlets.
  • the impeller is put in the casing and configured to rotate around a central axis in first and second directions.
  • the inlet is formed in front of the center of the impeller so that water can enter the enclosed space through the inlet.
  • the casing further includes first and second exhaust channels (first and second pipes) that are extended continuously from the first and second outlets, respectively.
  • the switch valve is located at the first and second outlets adjacent to the enclosed space within the casing.
  • the switch valve is also configured: to turn on a pivot to drain the water in the enclosed space through the first outlet and the first exhaust channel, by force of water generated with the impeller rotating in the first direction; and also to turn on the pivot to drain the water in the enclosed space through the second outlet and the second exhaust channel, by force of water generated with the impeller rotating in the second direction.
  • the switch valve turns on the pivot so as to open and close the first and second outlets in the first and second exhaust channels, respectively, by the force of the water flowing in the first direction.
  • the water in the enclosed space flows out through the first outlet and the first exhaust channel from a flow channel around the central axis of the impeller.
  • the impeller rotates in the second direction
  • the water in the enclosed space flows out through the second outlet and the second exhaust channel from the invariable flow channel around the central axis of the impeller.
  • the flow channel has a constant width around the central axis, but if two different volutes becoming gradually wider toward the first and second outlets can be formed around the central axis, the pump can have higher liquid-carrying performance, because the pressure of the liquid (water) can be smoothly increased.
  • the pump in the configuration, it is difficult to form such two different volutes around the central axis of the impeller.
  • Japanese Patent Application Publication No. 2003-003995 published on January 8, 2003 discloses a pump.
  • a switch valve turns on a pivot by force of the liquid generated with an impeller rotating in a first direction, and then a first volute is formed around a central axis of the impeller.
  • the first volute becomes gradually wider from the root of a first exhaust channel to the side of the root of a second exhaust channel.
  • a second volute becoming gradually narrower from the side of the root of the second exhaust channel to the root of the first exhaust channel is formed around the central axis. Because of this, when the impeller rotates in the second direction, the pump cannot have higher liquid-carrying performance.
  • a pump of the present invention comprises a casing, a rotating device and a switch valve.
  • the casing comprises an enclosed space, an inlet and first and second outlets.
  • the casing is configured so that a fluid can enter the enclosed space through the inlet and the fluid in the enclosed space can flow out through the first and second outlets.
  • the rotating device includes an impeller which has a central axis and is put in the enclosed space.
  • the rotating device is configured to rotate the impeller around the central axis in first and second directions.
  • the switch valve has a pivot and is put in the casing.
  • the switch valve is also configured to turn on the pivot so that the fluid in the enclosed space can: flow out through the first outlet if a rotation direction of the impeller is the first direction; and also flow out through the second outlet if a rotation direction of the impeller is the second direction.
  • the switch valve is in the shape of a circular arc as seen from a side of the switch valve.
  • the switch valve is further configured to turn on the pivot so as to: close the side of the second outlet to form a first volute around the central axis of the impeller inside the switch valve if a rotation direction of the impeller is the first direction; and also close the side of the first outlet to form a second volute around the central axis of the impeller inside the switch valve if a rotation direction of the impeller is the second direction.
  • the first volute becomes gradually wider from the second outlet to the first outlet.
  • the second volute becomes gradually wider from the first outlet to the second outlet.
  • the present invention can have higher fluid-carrying performance even if the impeller rotates in any of the first and second directions.
  • the pump further comprises: an intake channel extended from the inlet; and first and second exhaust channels extended from the first and second outlets, respectively.
  • the switch valve is put in the enclosed space.
  • the switch valve is configured to turn on the pivot by force of the fluid in the enclosed space generated with the impeller rotating in the first direction so as to close the side of the second outlet to form the first volute around the central axis of the impeller inside the switch valve and to drain the fluid in the enclosed space through the first volute, the first outlet and the first exhaust channel.
  • the switch valve is also configured to turn on the pivot by force of the fluid in the enclosed space generated with the impeller rotating in the second direction so as to close the side of the first outlet to form the second volute around the central axis of the impeller inside the switch valve and to drain the fluid in the enclosed space through the second volute, the second outlet and the second exhaust channel.
  • the pump is symmetry with respect to a line.
  • the pump is configured so that: the center on the central axis of the impeller and the pivot of the switch valve are located on said line; the impeller and the casing are equally divided by said line; the first and second exhaust channels are located at both sides of said line; and the first and second volutes are symmetry with respect to said line
  • the pump can have the same performance as a one ⁇ way volute pump.
  • the central axis of the impeller and the pivot of the switch valve are arranged so that the central axis exists between the first and second outlets and the pivot.
  • the switch valve is put in the casing so that a part of outer circumference of the switch valve makes contact with the inner face of the casing.
  • the switch valve further comprises a recess formed on the outer circumference of the switch valve. In this embodiment, even of a foreign substance enters between the outer circumference of the switch valve and an inner face of the casing, the foreign substance can be drawn into the space of the recess. Therefore, it is possible to prevent a foreign substance from obstructing the operation of the switch valve.
  • the switch valve further comprises a projection formed on a side of the switch valve, and is put in the casing so that the projection slides on an inner face of the casing when turning on the pivot.
  • the projection formed on a side of the switch valve slides on an inner face of the casing. Accordingly, dynamic friction between the switch valve and the casing can be reduced, and the switch valve can smoothly turn on the pivot.
  • the switch valve can smoothly turn on the pivot.
  • even if a foreign substance enters a place between a side of the switch valve and the casing the foreign substance can be let out from the place. Therefore, it is possible to prevent a foreign substance from obstructing the operation of the switch valve.
  • FIGS. 1-3 show a pump (a volute pump) in accordance with an embodiment of the present invention.
  • This pump includes a casing 1, a rotating device 4 and a switch valve 6, and is characterized by, especially the switch valve 6.
  • the casing 1 includes an enclosed space 10, an inlet 11 and first and second outlets 12 and 13, and is configured so that a fluid, e.g., a liquid such as water, etc. can enter the enclosed space 10 through the inlet 11 and the liquid in the enclosed space 10 can flow out through the first and second outlets 12 and 13.
  • a fluid e.g., a liquid such as water, etc.
  • the casing 1 is formed of first and second cases 2 and 3, which are hereinafter referred to as, e.g., front and rear cases, respectively.
  • the front case 2 includes a gibbous shaped base 20, sides 21 and 22, a square flange 23, an intake channel 24, first and second exhaust channels 25 and 26, a plurality of (e.g., three) supporting pieces 27, and a top cap 28.
  • the intake channel 24 and the first and second exhaust channels 25 and 26 can be attached to and detached from the casing 1.
  • the base 20 has the inlet 11 at a position corresponding to the center of the square flange 23.
  • the sides 21 and 22 are formed on the circumference of the base 20.
  • the side 21 is in the shape of a semicircular arc of a circle having a radius "R 1 ".
  • the center of the circle having the radius "R 1 " is on the central axis of an impeller 5 included in the rotating device 4.
  • the side 22 is in the shape of a bow including a circular arc of a circle having a radius "R 2 " corresponding to the impeller 5.
  • the first and second outlets 12 and 13 are formed at both ends of the side 22.
  • the center of the circle having the radius "R 2 " is on the central axis of an impeller 5, and the radius “R 2 " is smaller than the radius "R 1 ".
  • the flange 23 is an external flange stuck out from the circumference of the tip end of the sides 21 and 22.
  • the intake channel 24 is continuously extended outwards from the circumference of the inlet 11.
  • the first and second exhaust channels 25 and 26 are continuously extended outwards from the circumferences of the first and second outlets 12 and 13, respectively and are parallel to each other.
  • the supporting pieces 27 are continuously extended inwards from the circumference of the inlet 11.
  • the top cap 28 is fixed to the tips of the supporting pieces 27.
  • the rear case 3 includes a circular base 30, a cylindrical side 31, a square flange 32 and a bottom cup part 33.
  • the side 31 is formed around the circumference of the base 30.
  • the flange 32 is an external flange stuck out from the circumference of the tip end of the side 31.
  • the bottom cup part 33 is formed of a cylindrical partition stuck out from the inner face of the base 30 toward the top cap 28 of the front case 2.
  • the front and rear cases 2 and 3 constitute the casing 1 by being joined to each other at the circumferences of the flanges 23 and 32, and the space in the front case 2 and the space in the rear case 3 constitute the enclosed space 10.
  • the rotating device 4 includes the impeller 5 which has the central axis (an axis of the shaft 43 to be described) and is put in the enclosed space 10, and is configured to rotate the impeller 5 around the central axis in first and second directions.
  • the rotating device 4 is formed of permanent magnets 41, a bearing 42, a shaft 43, electromagnets 44, a controller 45 and a housing 40 in addition to the impeller 5.
  • the impeller 5 includes a hollow cylinder 50, a flange 51 and a plurality of (11 in the example of FIG. 2 or the like.) vanes 52.
  • the flange 51 is an external flange stuck out from the circumference of the tip end of the cylinder 50.
  • the vanes 52 are formed on the end face of the flange 51, and arranged around the central axis of the impeller 5.
  • the permanent magnets 41 are fixed on the outer face of the base of the cylinder 50, and arranged around the central axis of the impeller 5.
  • the bearing 42 is in the shape of a hollow cylinder, and fit into the inside of the base of the cylinder 50.
  • the shaft 43 is inserted into the top cap 28 of the front case 2 and the bottom cap part 33 of the rear case 3, and fixed between the top cap 28 and the bottom cap part 33.
  • the impeller 5 is supported by the shaft 43 inserted into the bearing 42 so that it can rotate around the shaft 43.
  • the electromagnets 44 and the controller 45 are incorporated into the housing 40 which is attached to the back of the rear case 3.
  • the housing 40 includes a square base 400 and four sides 401.
  • the electromagnets 44 are incorporated inside the housing 40 so as to be arranged around the permanent magnets 41 through the side 31 of the rear case 3. Each electromagnet 44 is formed of a winding, a core and so on.
  • the controller 45 is incorporated into the base 400 of the housing 40 by insert molding, and is configured to activate the electromagnets 44 to rotate the impeller 5 around the central axis in a first or second direction, in accordance with an input signal from an external device. That is, the electromagnets 44 generate a rotating magnetic field, and attract or repel the permanent magnets 44. Thereby, the impeller 5 rotates around the central axis.
  • the switch valve 6 has a pivot 60 and is put in the casing 1.
  • the switch valve 6 is configured to turn on the pivot 60 so that the liquid in the enclosed space 10 can: flow out through the first outlet 12 and the first exhaust channel 25 if a rotation direction of the impeller 5 is the first direction (clockwise) as shown in FIG. 2 ; and also flow out through the second outlet 13 and the second exhaust channel 26 if a rotation direction of the impeller 5 is the second direction (counterclockwise) as shown in FIG. 3 .
  • the switch valve 6 is in the shape of a circular arc (a semicircular arc in FIG. 2 , etc.) as seen from a side of itself.
  • the switch valve 6 is further configured to turn on the pivot 60 so as to: close the side of the second outlet 13 to form a first volute 61 around the central axis of the impeller 5 inside the switch valve 6 if a rotation direction of the impeller 5 is the first direction; and also close the side of the first outlet 12 to form a second volute 62 around the central axis of the impeller 5 inside the switch valve 6 if a rotation direction of the impeller 5 is the second direction.
  • the first volute 61 becomes gradually wider from the second outlet 13 to the first outlet 12.
  • the second volute 62 becomes gradually wider from the first outlet 12 to the second outlet 13.
  • the pump is symmetry with respect to a line (see ⁇ A' in FIG. 2 , etc.).
  • the center on the central axis of the impeller 5 and the pivot 60 of the switch valve 6 are located on the line (A).
  • the impeller 5 and the casing 1 are equally divided by the line (A).
  • the first and second exhaust channels 25 and 26 are located at both sides of the line (A).
  • the first and second volutes 61 and 62 are symmetry with respect to the line (A).
  • the pump is approximately symmetry with respect to the line (A).
  • the central axis of the impeller 5 and the pivot 60 of the switch valve 6 are arranged so that the central axis exists between the first and second outlets 12 and 13 and the pivot 60.
  • the pivot 60 is a hole into which a pin (not shown) of the casing is inserted, and is formed at the center of the sides of the switch valve 6.
  • the pin is formed on the base 20 of the front case 2 or the flange 32 of the rear case 3 so as to be located in the vicinity of the center of the side 21 of the front case 2.
  • the switch valve 6 is put in the casing 1 (the enclosed space 10) so that the whole of the outer circumference of the switch valve 6 faces the inner face of the casing 1 (i.e., the side 21 of the front case 2) and a part of the outer circumference makes contact with the inner face of the side 21 and also the switch valve 6 turns on the pivot 60 by force of the liquid generated when the impeller 5 is rotating.
  • the switch valve of the present invention may be rotated with a motor driven based on a rotation direction of the impeller, or the like.
  • the curvature radius of the outer circumference of the switch valve 6 is smaller than that of the inner circumference of the side 21.
  • the length between both ends of the switch valve 6 is approximately equal to the length between the outer end of the first (or second) outlet 12 (or 13) and the inner end of the second (or first) outlet 13 (or 12).
  • the outer end 121 and the inner end 122 of the first outlet 12 exist outside and inside with respect to the central axis of the impeller 5, respectively.
  • the outer end 131 and the inner end 132 of the second outlet 13 exist outside and inside with respect to the central axis of the impeller 5, respectively.
  • the switch valve 6 is configured to turn on the pivot 60 by force of the liquid in the enclosed space 10 generated with the impeller 5 rotating in the first direction so as to close the side of the second outlet 13 to form the first volute 61 around the central axis of the impeller 5 inside the switch valve 6 and to drain the liquid in the enclosed space 10 through the first volute 61, the first outlet 12 and the first exhaust channel 25.
  • the switch valve 6 is also configured to turn on the pivot 60 by force of the liquid in the enclosed space 10 generated with the impeller 5 rotating in the second direction so as to close the side of the first outlet 12 to form the second volute 62 around the central axis of the impeller 5 inside the switch valve 6 and to drain the liquid in the enclosed space 10 through the second volute 62, the second outlet 13 and the second exhaust channel 26.
  • the controller 45 if receiving an input signal for the first direction (Rf), the controller 45 operates the electromagnets 44 to rotate the impeller 5 around the central axis in the first direction. Thereby, the liquid in the enclosed space 10 is rotated in the first direction with the impeller 5 to generate pressure (force), and a liquid from outside is sucked into the enclosed space 10 through the intake channel 24 and the inlet 11 by the pressure.
  • the switch valve 6 also turns counterclockwise on the pivot 60 by the pressure and closes the side of the second outlet 13 to form the first volute 61 around the central axis of the impeller 5 inside the switch valve 6.
  • the side of the first end 6a of the switch valve 6 makes contact with the side of the outer end 121 of the first outlet 12 in the inner face of the side 21.
  • the second end 6b of the switch valve 6 also makes contact with the inner end 132 of the second outlet 13.
  • the controller 45 if receiving an input signal for the second direction (Rs), the controller 45 operates the electromagnets 44 to rotate the impeller 5 around the central axis in the second direction. Thereby, the liquid in the enclosed space 10 is rotated in the second direction with the impeller 5 to generate pressure (force), and a liquid from outside is sucked into the enclosed space 10 through the intake channel 24 and the inlet 11 by the pressure.
  • the switch valve 6 also turns clockwise on the pivot 60 by the pressure and closes the side of the first outlet 12 to form the second volute 62 around the central axis of the impeller 5 inside the switch valve 6.
  • the side of the second end 6b of the switch valve 6 makes contact with the side of the outer end 131 of the second outlet 13 in the inner face of the side 21.
  • the first end 6a of the switch valve 6 also makes contact with the inner end 122 of the first outlet 12.
  • the liquid in the enclosed space 10 is discharged through first or second volute 61 or 62 becoming gradually wider to first or second outlet 12 or 13, and accordingly the pump can have higher fluid (liquid)-carrying performance even if the impeller 5 rotates in any of the first and second directions.
  • the pump is symmetry with respect to the line (A), and therefore can have the same performance as a one-way volute pump.
  • the switch valve 6 further includes a recess 64 formed on its own outer circumference.
  • four recesses 64 are formed at both sides of two brims 63 which stick out between the center and both ends of the outer circumference of the switch valve 6, respectively and divide the outer circumference of the switch valve 6 in two in the circumferential direction.
  • the switch valve 6 may be obstructed by the foreign substance and incompletely close the side of first or second outlet 12 or 13.
  • the switch valve 6 does not have all or part of the two brims 63.
  • the switch valve 6 further includes a projection 65 formed on a side of the switch valve 6, and is put in the casing 1 so that the projection 65 slides on the inner face of the casing 1. (specifically, the base 20 of the front case 2 and the flange 32 of the rear case 3) when it turns on the pivot 60.
  • the switch valve 6 includes projections 65 formed on both sides of the switch valve 6.
  • the switch valve of the present invention may have at least one projection only on one side of the switch valve.
  • the projections 65 include, but not limited to, raised strips (ridges) 66 formed on both sides of the switch valve 6, and two circular rims 67 which are formed at centers of both sides of the switch valve 6 and enclose both ends of the pivot 60.
  • Each raised strip 66 is formed along circumference of a circle of which center is located on the central axis of the switch valve 6.
  • At least one projection may be formed on an inner face of the casing 1 (the base 20 of the front case 2 and the flange 32 of the rear case 3).
  • the projection may be a projection for point contact (e-.g., a nib).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP09770060A 2008-06-26 2009-06-17 Pump Withdrawn EP2314881A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008167730A JP2010007563A (ja) 2008-06-26 2008-06-26 ポンプ
PCT/JP2009/060990 WO2009157350A1 (ja) 2008-06-26 2009-06-17 ポンプ

Publications (1)

Publication Number Publication Date
EP2314881A1 true EP2314881A1 (en) 2011-04-27

Family

ID=41444418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09770060A Withdrawn EP2314881A1 (en) 2008-06-26 2009-06-17 Pump

Country Status (3)

Country Link
EP (1) EP2314881A1 (ja)
JP (1) JP2010007563A (ja)
WO (1) WO2009157350A1 (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012180828A (ja) * 2011-02-07 2012-09-20 Aisan Industry Co Ltd 電動ポンプ
CN103277340A (zh) * 2013-05-09 2013-09-04 江苏大学 一种用于透平泵的双向蜗壳及其使用方法
DE102017208134A1 (de) * 2017-05-15 2018-11-15 Magna Powertrain Bad Homburg GmbH Fördereinrichtung
CN111919029A (zh) * 2018-03-13 2020-11-10 格兰富控股联合股份公司 离心泵机组

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011149591A (ja) * 2010-01-20 2011-08-04 Toshiba Corp 給水装置及びそれを備えた冷蔵庫
KR102555267B1 (ko) * 2016-06-13 2023-07-14 엘지전자 주식회사 의류처리장치용 배수펌프
CN106224291B (zh) * 2016-08-30 2018-12-04 浙江新控泵业有限公司 一种能改善旋涡泵内流体流动状况的泵体结构
CN109989924B (zh) * 2019-05-19 2020-07-14 南水北调江苏泵站技术有限公司 一种节能型离心水泵

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US2205902A (en) * 1937-08-12 1940-06-25 Gen Electric Reversible fan
JPS5241468A (en) * 1975-09-29 1977-03-31 Hitachi Ltd Pump for tableware cleaning apparatus
KR100220407B1 (ko) 1996-10-28 1999-09-15 전주범 유로전환 하우징을 지닌 온수순환펌프
JP2003003995A (ja) 2001-06-22 2003-01-08 Toto Ltd ポンプおよびこれを備える食器洗い機
JP3741092B2 (ja) * 2001-09-25 2006-02-01 松下電器産業株式会社 超薄型ポンプとこれを備えた冷却システム

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009157350A1 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012180828A (ja) * 2011-02-07 2012-09-20 Aisan Industry Co Ltd 電動ポンプ
CN103277340A (zh) * 2013-05-09 2013-09-04 江苏大学 一种用于透平泵的双向蜗壳及其使用方法
CN103277340B (zh) * 2013-05-09 2015-11-18 江苏大学 一种用于透平泵的双向蜗壳及其使用方法
DE102017208134A1 (de) * 2017-05-15 2018-11-15 Magna Powertrain Bad Homburg GmbH Fördereinrichtung
DE102017208134B4 (de) 2017-05-15 2022-07-07 Hanon Systems Efp Deutschland Gmbh Fördereinrichtung
CN111919029A (zh) * 2018-03-13 2020-11-10 格兰富控股联合股份公司 离心泵机组

Also Published As

Publication number Publication date
JP2010007563A (ja) 2010-01-14
WO2009157350A1 (ja) 2009-12-30

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