EP3670922B1 - Rotor de moteur pour pompe à eau, pompe à eau et système de circulation de piscine - Google Patents

Rotor de moteur pour pompe à eau, pompe à eau et système de circulation de piscine Download PDF

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Publication number
EP3670922B1
EP3670922B1 EP19215692.5A EP19215692A EP3670922B1 EP 3670922 B1 EP3670922 B1 EP 3670922B1 EP 19215692 A EP19215692 A EP 19215692A EP 3670922 B1 EP3670922 B1 EP 3670922B1
Authority
EP
European Patent Office
Prior art keywords
water pump
motor rotor
molded part
water
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.)
Active
Application number
EP19215692.5A
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German (de)
English (en)
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EP3670922A1 (fr
Inventor
Shuiyong HUANG
Jinnian WANG
Haijun Wang
Jiang Xu
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.)
Bestway Inflatables and Material Corp
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Bestway Inflatables and Material Corp
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Filing date
Publication date
Priority claimed from CN201921231450.6U external-priority patent/CN210738837U/zh
Application filed by Bestway Inflatables and Material Corp filed Critical Bestway Inflatables and Material Corp
Publication of EP3670922A1 publication Critical patent/EP3670922A1/fr
Application granted granted Critical
Publication of EP3670922B1 publication Critical patent/EP3670922B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • 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
    • F04D29/20—Mounting rotors on shafts

Definitions

  • the present disclosure relates to the technical field of water pumps. More specifically, the present disclosure relates to a motor rotor for a water pump. The present disclosure further relates to a water pump comprising a motor rotor and a pool circulation system comprising the water pump.
  • Most swimming pools are equipped with a circulation system in communication with a water injection region of the pool for heating water in the pool.
  • the circulation system typically comprises a water inlet pipeline, a water pump, a heater, and a water outlet pipeline.
  • the circulation system can, therefore, maintain the temperature of water in the pool within a comfortable temperature range for the human body, and thus enables users to use the pool for a long time.
  • US 2016/094099 A1 relates generally to electric fluid pumps of the type used in motor vehicles, and more particularly to an electric fluid pump having a rotor unit with a magnet carrier assembly including a pair of coaxial components fixed together and a method of constructing the rotor unit.
  • the present invention provides a motor rotor according to claim 1, a water pump according to claim 6 and a pool circulation system according to claim 10.
  • Fig. 1 is a cross-sectional diagram of a pool circulation system.
  • the pool circulation system may be used to control the temperature of the pool by circulating water through a heater.
  • the pool circulation system comprises a water pump 1, a heater 2, a water inlet pipeline 3 and a water outlet pipeline 4.
  • the pool circulation system may comprise other components, such as a filter for removing impurities from the water.
  • a filter may be arranged, for example, in the water pump 1 or between the water pump 1 and the heater 2.
  • the water inlet pipeline 3 comprises a water inlet end 31 and a water outlet end 32.
  • the water inlet end 31 is in communication with a water injection region of the pool and is provided with a one-way valve so that water can only flow from the water injection region of the pool to the water inlet pipeline 3.
  • the water outlet end 32 is in communication with a water inlet 111 of the water pump 1.
  • the water entering the heater 2 from the water inlet 21 is heated by a heating component 23 of the heater 2 and is then conveyed to the water injection region of the pool via the water outlet pipeline 4.
  • the water outlet pipeline 4 comprises a water inlet end 41 and a water outlet end 42.
  • the water inlet end 41 is in communication with the water outlet 22 of the heater 2, and the water outlet end 42 is in communication with the water injection region of the pool and is provided with a one-way valve, so that water can only flow from the water outlet pipeline 4 to the water injection region of the pool.
  • the pool circulation system may further comprise a water flow switch provided on the water inlet pipeline 3 and/or on the water outlet pipeline 4.
  • Fig. 1 shows a water flow switch 43 provided on the water outlet pipeline 4.
  • the water flow switch 43 may trigger an alarm signal when no water is in the pool circulation system to avoid or reduce damaging the heater 2, without water or no-load operation of the filter.
  • the pool circulation system further comprises a temperature sensing probe 24 provided downstream of the heating component 23 of the heater 2 to sense the temperature of the heated water.
  • the pool circulation system further comprises a temperature controller 25 provided in the heater 2.
  • the temperature controller 25 is, for example, a manually reset temperature controller, or the temperature controller 25 can be advantageously electrically connected to the temperature sensing probe 24 to control the heating temperature of the heater 2 based on the sensing result of the temperature sensing probe 24.
  • Fig. 2 is an exploded view of the water pump 1 of the pool circulation system of Fig. 1 .
  • Fig. 3 is a cross-sectional view of the water pump 1 of Fig. 2 .
  • the water pump 1 comprises a pump cover 11, a housing 12, as well as a motor rotor 13 and a motor stator mounted in the housing 12.
  • the housing 12 comprises a first chamber 121 provided with an opening 126 in a mounting end face 124 of the housing 12, and a second chamber 122 isolated from the first chamber 121 in a sealed manner by a pump wall 123.
  • a fixing rod 14 is mounted in the first chamber 121.
  • a first end 141 of the fixing rod 14 is fixed to the bottom of the first chamber 121, and a second end 142 protrudes from the opening 126 and is fixed to the pump cover 11.
  • the fixing rod 14 may be, for example, a porcelain shaft.
  • the pump cover 11 comprises a body 113 and a mounting flange 114 extending around an edge of the body 113.
  • the mounting flange 114 is adapted in shape to an outer edge of the mounting end face 124 of the housing 12, so that the mounting flange 114 can be connected to the mounting end face 124 by connecting components (e.g., screws), so that the pump cover 11 and the housing 12 are fixed to each other and confine a drainage chamber 115 through which the fixing rod 14 passes.
  • the body 113 of the pump cover 11 is provided with a water inlet 111 in communication with the water inlet pipeline 3 and a water outlet 112 in communication with the heater 2.
  • the motor rotor 13 comprises a hollow rotatable shaft 131 and an impeller 132 integrally formed with the hollow rotatable shaft 131.
  • the hollow rotatable shaft 131 is mounted in the first cavity 121 of the housing 12 by being sheathed on the fixing rod 14, and axially extends from the first chamber 121 to the drainage chamber 115 via the opening 126.
  • the impeller 132 is integrally formed at one axial end, located in the drainage chamber 115, of the hollow rotatable shaft 131 so as to drive water to flow in the drainage chamber 115.
  • the integrated motor rotor 13 of the present disclosure effectively reduces the operation noise and prolongs the service life of the water pump.
  • the motor stator is provided in the second chamber 122, and a magnetic field generated by the motor stator passes through the pump wall 123 between the first chamber 121 and the second chamber 122 to drive the motor rotor 13 by interacting with a magnet (for example, magnetic steel) within the hollow rotatable shaft 131 of the motor rotor 13.
  • a magnet for example, magnetic steel
  • the second chamber 122 should be isolated, in a sealed manner, from the first chamber 121 and the drainage chamber 115 to prevent water from entering the second chamber 122 and damaging the motor stator.
  • the motor stator comprises a winding bobbin 151 provided in the second chamber 122, a silicon steel sheet 152 provided on the winding bobbin 151, and an insulating sheet 153 provided on the silicon steel sheet 152.
  • the mounting end face 124 of the housing 12 defines an annular groove 125 which faces the mounting flange 114 of the pump cover 11.
  • the water pump 1 further comprises a seal ring 18 which is provided in the annular groove 125 and is attached to the mounting flange 114 to prevent water in the drainage chamber 115 from flowing between the mounting flange 114 and the mounting end face 124.
  • At least one reinforcing rib 116 may be provided between the body 113 of the pump cover 11 and the mounting flange 114 to increase the strength of the pump cover 11.
  • the pump cover 11 defines a recess 117 configured to receive the second end 142 of the fixing rod 14.
  • the water pump 1 comprises a sealing cap 16 which is disposed in the recess 117 and covers the second end 142 of the fixing rod 14.
  • the water pump 1 may further comprise a similar or identical sealing cap 16 at the bottom of the first chamber 121 to cover the first end 141 of the fixing rod 14.
  • the water pump 1 may further comprise a wear pad 17 which is sheathed on the fixing rod 14 and is located between the sealing cap 16 and the motor rotor 13.
  • the motor rotor 13 of the water pump 1 Four different embodiments of the motor rotor 13 of the water pump 1, according to the present invention, are described in conjunction with Figs. 4 to 15 .
  • the motor rotor 13 may be manufactured using secondary injection molding due to the presence of the magnet 134.
  • Fig. 4 is a perspective view of a first embodiment of the motor rotor 13 of the water pump, according to the present disclosure.
  • Fig. 5 is a cross-sectional perspective view of the motor rotor 13 of Fig. 4
  • Fig. 6 is a cross-sectional view of the motor rotor 13 of Fig. 4 .
  • the hollow rotatable shaft 131 of the motor rotor 13 comprises a first injection molded part 1311 and a second injection molded part 1312.
  • the first injection molded part 1311 has a cylindrical structure that extends circumferentially around and axially along the fixing rod 14 from the first chamber 121 of the housing 12 to the drainage chamber 115 and is integrally formed with the impeller 132.
  • the second injection molded part 1312 extends circumferentially around the first injection molded part 1311 and over a part of an axial length of the first injection molded part 1311.
  • the second injection molded part 1312 cooperates with the first injection molded part 1311 so that the magnet 134 is fixedly clamped between the first injection molded part 1311 and the second injection molded part 1312.
  • the first injection molded part 1311 is configured to extend around the fixing rod 14, substantially over the entire axial length of the hollow rotatable shaft 131.
  • the impeller 132 extends radially outwardly from an axial end of the hollow rotatable shaft 131.
  • the first injection molded part 1311 further comprises a first protrusion 13111, a second protrusion 13112, and a third protrusion 13113, which protrude from an outer wall of the first injection molded part 1311, the first protrusion 13111 being located at the bottom of the first injection molded part 1311, and the second protrusion 13112 and the third protrusion 13113 being located at a substantially axial central position of the first injection molded part 1311.
  • the magnet 134 is disposed circumferentially around a portion of the first injection molded part 1311 between the first protrusion 13111 and the second protrusion 13112, with a portion of the first injection molded part 1311 extending through an entire axial length of the magnet 134.
  • the second injection molded part 1312 extends axially from the bottom of the motor rotor 13 to the third protrusion 13113 of the first injection molded part 1311 to cover the magnet 134.
  • the second injection molded part 1312 further comprises a first fixing portion 13121 and a second fixing portion 13122, which protrude from an inner wall of the second injection molded part 1312, the first fixing portion 13121 forming the bottom of the motor rotor 13 to support the magnet 134 and the first injection molded part 1311, and the second fixing portion 13122 being clamped between the second protrusion 13112 and the third protrusion 13113 of the first injection molded part 1311, so that the second injection molded part 1312 cooperates with the first injection molded part 1311, so that the magnet 134 is fixedly clamped between the first injection molded part 1311 and the second injection molded part 1312.
  • the motor rotor 13 further comprises two shaft sleeves (for example, porcelain sleeves) which are nested between the fixing rod 14 and the hollow rotatable shaft 131 at two axial ends of the hollow rotatable shaft 131. More specifically, the motor rotor 13 comprises a first shaft sleeve 1331, which is nested between the fixing rod 14 and the first protrusion 13111 of the first injection molded part 1311 and between the fixing rod 14 and the first fixing portion 13121 of the second injection molded part 1312 at the bottom of the hollow rotatable shaft 131, and a second shaft sleeve 1332 which is nested between the fixing rod 14 and the top of the first injection molded part 1311 at the top of the hollow rotatable shaft 131.
  • first shaft sleeve 1331 which is nested between the fixing rod 14 and the first protrusion 13111 of the first injection molded part 1311 and between the fixing rod 14 and the first fixing portion 13121 of the second injection molded part 1312 at the bottom of the hollow
  • Fig. 7 is a perspective view of a second embodiment of the motor rotor 13 of the water pump, according to the present disclosure.
  • Fig. 8 is a cross-sectional perspective view of the motor rotor 13 of Fig. 7
  • Fig. 9 is a cross-sectional view of the motor rotor 13 of Fig. 7 .
  • the structures of the hollow rotatable shaft 131 and the impeller 132 of the motor rotor 13 are similar to those in the first embodiment, which will not be described here again.
  • the motor rotor 13 comprises a shaft sleeve 1333 which is nested between the fixing rod 14 and the hollow rotatable shaft 131 substantially along the entire axial length of the hollow rotatable shaft 131. That is, the shaft sleeve 1333 axially extends, around the fixing rod 14, substantially from the first fixing portion 13121 of the second injection molded part 1312 and through the impeller 132 located at the top of the first injection molded part 1311.
  • Fig. 10 is a perspective view of a third embodiment of the motor rotor 13 of the water pump, according to the present disclosure.
  • Fig. 11 is a cross-sectional perspective view of the motor rotor 13 of Fig. 10
  • Fig. 12 is a cross-sectional view of the motor rotor 13 of Fig. 10 .
  • the hollow rotatable shaft 131 of the motor rotor 13 comprises a first injection molded part 1311 and a second injection molded part 1312.
  • the first injection molded part 1311 has a cylindrical structure that extends circumferentially around and axially along the fixing rod 14 in the first chamber 121 of the housing 12.
  • the second injection molded part 1312 extends circumferentially around the first injection molded part 1311 and the fixing rod 14, from the first chamber 121 of the housing 12 to the drainage chamber 115 and is integrally formed with the impeller 132.
  • the second injection molded part 1312 cooperates with the first injection molded part 1311, so that the magnet 134 is fixedly clamped between the first injection molded part 1311 and the second injection molded part 1312.
  • the first injection molded part 1311 is configured to extend around the fixing rod 14, from a position near the bottom of the motor rotor 13.
  • the first injection molded part 1311 extends axially through an entire axial length of the magnet 134 and beyond.
  • the first injection molded part 1311 further comprises a first protrusion 13111, a second protrusion 13112 and a third protrusion 13113, which protrude from an outer wall of the first injection molded part 1311.
  • the first protrusion 13111 is located at the bottom of the first injection molded part 1311.
  • the second protrusion 13112 and the third protrusion 13113 are each located at the substantially axial central position of the hollow rotatable shaft 131, with the magnet 134 extending circumferentially around the first injection molded part 1311 and being fixed axially between the first protrusion 13111 and the second protrusion 13112.
  • the second injection molded part 1312 extends around the first injection molded part 1311, the magnet 134 and the fixing rod 14 over the entire axial length of the hollow rotatable shaft 131 to cover the magnet 134 and the first injection molded part 1311 so as to form the illustrated "stepped" structure.
  • the impeller 132 radially extends outward from an axial end of the second injection molded part 1312. The impeller 132 is thus located in the drainage chamber 115, so as to drive water to flow in the drainage chamber 115.
  • the second injection molded part 1312 further comprises a first fixing portion 13121 and a second fixing portion 13122, which protrude from an inner wall of the second injection molded part 1312, the first fixing portion 13121 forming the bottom of the motor rotor 13 to support the magnet 134 and the first injection molded part 1311, and the second fixing portion 13122 being clamped between the second protrusion 13112 and the third protrusion 13113 of the first injection molded part 1311 so that the second injection molded part 1312 cooperates with the first injection molded part 1311, so that the magnet 134 is fixedly clamped between the first injection molded part 1311 and the second injection molded part 1312.
  • the motor rotor 13 further comprises two shaft sleeves (for example, porcelain sleeves) which are nested between the fixing rod 14 and the hollow rotatable shaft 131 at two axial ends of the hollow rotatable shaft 131. More specifically, the motor rotor 13 comprises a first shaft sleeve 1331 which is nested between the fixing rod 14 and the first protrusion 13111 of the first injection molded part 1311 and between the fixing rod 14 and the first fixing portion 13121 of the second injection molded part 1312 at the bottom of the hollow rotatable shaft 131, and a second shaft sleeve 1332 which is nested between the fixing rod 14 and the top of the second injection molded part 1312 at the top of the hollow rotatable shaft 131.
  • two shaft sleeves for example, porcelain sleeves
  • Fig. 13 is a perspective view of a fourth embodiment of the motor rotor 13 of the water pump, according to the present disclosure.
  • Fig. 14 is a cross-sectional perspective view of the motor rotor 13 of Fig. 13
  • Fig. 15 is a cross-sectional view of the motor rotor 13 of Fig. 13 .
  • the structures of the hollow rotatable shaft 131 and the impeller 132 of the motor rotor 13 are similar to those in the third embodiment, which will not be described here again.
  • the motor rotor 13 comprises a shaft sleeve 1333 which is nested between the fixing rod 14 and the hollow rotatable shaft 131 substantially along the entire axial length of the hollow rotatable shaft 131. That is, the shaft sleeve 1333 extends around the fixing rod 14, substantially from the first fixing portion 13121 of the second injection molded part 1312 and through the impeller 132 located at the top of the second injection molded part 1312.

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

Claims (10)

  1. Rotor de moteur (13) destiné à une pompe à eau, comprenant :
    un arbre rotatif creux (131) présentant une première pièce moulée par injection (1311) ;
    un aimant (134) présentant une longueur axiale et disposé de manière circonférentielle autour d'une partie de la première pièce moulée par injection, la partie de la première pièce moulée par injection s'étendant sur toute la longueur axiale de l'aimant ;
    une roue (132) formée d'un seul tenant avec la première pièce moulée par injection, ladite roue étant située au niveau d'une extrémité axiale de l'arbre rotatif creux ; et caractérisé en ce que :
    l'arbre rotatif creux (131) comprend en outre une seconde pièce moulée par injection (13) s'étendant autour de la première pièce moulée par injection (1311) et sur la longueur axiale de l'aimant (134), la seconde pièce moulée par injection (1312) coopérant avec la première pièce moulée par injection (1311) afin de serrer de manière fixe l'aimant (134) entre la première pièce moulée par injection (1311) et la seconde pièce moulée par injection (1312).
  2. Rotor de moteur (13) destiné à une pompe à eau selon la revendication 1, le rotor de moteur comprenant en outre un manchon d'arbre (1333) présentant une forme tubulaire, le manchon d'arbre (1333) étant situé dans l'arbre rotatif creux (131) au niveau de son extrémité axiale.
  3. Rotor de moteur (13) destiné à une pompe à eau selon la revendication 1, le rotor de moteur (13) comprenant en outre deux manchons d'arbre, chaque manchon d'arbre présentant une forme tubulaire, l'un des deux manchons d'arbre étant situé dans l'arbre rotatif creux (131) au niveau de son extrémité axiale et l'autre des deux manchons d'arbre étant situé dans l'arbre rotatif creux (131) au niveau de son extrémité axiale opposée.
  4. Rotor de moteur (13) destiné à une pompe à eau selon la revendication 1, le rotor de moteur (13) comprenant en outre un manchon d'arbre (1333) présentant une forme tubulaire, le manchon d'arbre (1333) étant situé dans l'arbre rotatif creux (131) et s'étendant sur une distance comprenant au moins la moitié de toute la longueur axiale de l'arbre rotatif creux (131).
  5. Rotor de moteur (13) destiné à une pompe à eau selon la revendication 4, le manchon d'arbre (1333) s'étendant sensiblement sur toute la longueur axiale de l'arbre rotatif creux (131).
  6. Pompe à eau (1), comprenant un boîtier (12), qui comprend une première chambre (121) et une seconde chambre (122), une tige de fixation (14) étant disposée dans la première chambre (121), la pompe à eau (1) comprenant en outre :
    le rotor de moteur (13) selon la revendication 1, l'arbre rotatif creux (131) du rotor de moteur (13) étant monté dans la première chambre (121) en formant une gaine autour de la tige de fixation (14) ;
    un couvercle de pompe (11) définissant une entrée d'eau (31), une sortie d'eau (32) et une bride de montage (114) conçue pour venir en prise avec une face d'extrémité de montage (124) du boîtier (12) afin de délimiter une chambre de drainage (115) recevant la roue (132) ; et
    un stator de moteur (13) situé dans la seconde chambre (122), le stator de moteur (13) générant un champ magnétique qui passe à travers une paroi de pompe (123) entre la première chambre (121) et la seconde chambre (122) afin d'entraîner le rotor de moteur (13).
  7. Pompe à eau (1) selon la revendication 6, le couvercle de pompe (11) présentant un évidement (117) destiné à recevoir une extrémité, traversant la chambre de drainage (115), de la tige de fixation (14) ; et la pompe à eau (1) comprenant en outre un capuchon d'étanchéité (16) situé dans l'évidement (117) et recouvrant l'extrémité de la tige de fixation (14) ; de préférence la pompe à eau (1) comprenant en outre un patin d'usure (17) qui forme une gaine autour de la tige de fixation (14) et qui est situé entre le capuchon d'étanchéité (16) et le rotor de moteur (13).
  8. Pompe à eau (1) selon la revendication 6, la face d'extrémité de montage (124) du boîtier (12) présentant une rainure annulaire (125) qui fait face à la bride de montage (114) du couvercle de pompe et la pompe à eau comprenant en outre une bague d'étanchéité (15) qui est disposée dans la rainure annulaire (125) et qui est fixée à la bride de montage (114).
  9. Pompe à eau selon la revendication 6, le stator de moteur (13) comprenant un bobinage (151) disposé dans la seconde chambre (122), une feuille d'acier au silicium (152) disposée sur le bobinage (151) et une feuille isolante (152) disposée sur la feuille d'acier au silicium (152).
  10. Système de circulation de piscine, comprenant :
    la pompe à eau (1) selon la revendication 6 ;
    une conduite d'entrée d'eau (3) conçue pour réaliser une communication fluidique entre une région d'injection d'eau d'une piscine et l'entrée d'eau (111) de la pompe à eau (1) ;
    un dispositif de chauffage (2) présentant une entrée d'eau (111) en communication fluidique avec la sortie d'eau (112) de la pompe à eau (1) ; et
    une conduite de sortie d'eau (4) en communication fluidique entre une sortie d'eau (22) du dispositif de chauffage (2) et la région d'injection d'eau de la piscine.
EP19215692.5A 2018-12-17 2019-12-12 Rotor de moteur pour pompe à eau, pompe à eau et système de circulation de piscine Active EP3670922B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201822114202 2018-12-17
CN201921231450.6U CN210738837U (zh) 2018-12-17 2019-08-01 用于降噪水泵的马达转子、降噪水泵及水池循环系统

Publications (2)

Publication Number Publication Date
EP3670922A1 EP3670922A1 (fr) 2020-06-24
EP3670922B1 true EP3670922B1 (fr) 2024-02-07

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EP19215692.5A Active EP3670922B1 (fr) 2018-12-17 2019-12-12 Rotor de moteur pour pompe à eau, pompe à eau et système de circulation de piscine

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10108436A (ja) * 1996-09-27 1998-04-24 Hitachi Ltd ブラシレスモータおよびブラシレスキャンドモータポンプ
ATE414342T1 (de) * 2000-11-30 2008-11-15 C D R Pompe S P A Mechanische, magnetkraftbetriebene antriebsvorrichtung
DE102007043600A1 (de) * 2007-09-13 2009-03-19 Robert Bosch Gmbh Pumpenrotor für eine Spaltrohrpumpe
KR101134970B1 (ko) * 2009-11-19 2012-04-09 현대자동차주식회사 전기식 워터 펌프
CN203476727U (zh) * 2013-08-27 2014-03-12 华纳圣龙（宁波）有限公司 汽车电子冷却水泵
US10291091B2 (en) * 2014-09-25 2019-05-14 Magna Powertrain Fpc Limited Partnership Electric fluid pump with improved rotor unit, rotor unit therefor and methods of construction thereof

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