US20060083643A1 - Pump - Google Patents

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Publication number
US20060083643A1
US20060083643A1 US11/081,519 US8151905A US2006083643A1 US 20060083643 A1 US20060083643 A1 US 20060083643A1 US 8151905 A US8151905 A US 8151905A US 2006083643 A1 US2006083643 A1 US 2006083643A1
Authority
US
United States
Prior art keywords
pump
rotor
magnet
shaft
base
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
US11/081,519
Other languages
English (en)
Inventor
Hou-Chu Chen
Wen-Chuan Chen
Chia-Ching Weng
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.)
Delta Electronics Inc
Original Assignee
Delta Electronics Inc
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 Delta Electronics Inc filed Critical Delta Electronics Inc
Assigned to DELTA ELECTRONICS, INC. reassignment DELTA ELECTRONICS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, WEN-CHUAN, WENG, CHIA-CHING, CHEN, HOU-CHU
Publication of US20060083643A1 publication Critical patent/US20060083643A1/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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/048—Bearings magnetic; electromagnetic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/064—Details of the magnetic circuit
    • 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
    • F04D13/0673—Units comprising pumps and their driving means the pump being electrically driven the motor being of the inside-out type
    • 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
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance

Definitions

  • the invention relates in general to a pump and in particular to a pump which can gain efficiency without increasing volume.
  • pumps suitable for use in a wide range of applications, all performing the same basic function of drawing fluid from one point to another, or drawing a fluid from one energy level to another.
  • pumps for pumping fluids such as pumps for circulating cooling water to drawn water from a lower position to a higher position have been widely used.
  • pumps can draw water from lower levels to a tank at the roof, after which water falls due to gravity so that users can use water.
  • a pump is used to remove water.
  • FIG. 1 A conventional pump is shown in FIG. 1 .
  • the pump 1 includes an inlet 11 and an outlet 12 . When the pump 1 operates, a water pressure differential is generated, such that water is forced into the pump 1 from the inlet 11 , and leaves the pump 1 from the outlet 12 . Referring to both FIGS.
  • the pump 1 includes a case 10 , a base 16 and a rotor 15 .
  • the case 10 has inlets 11 and outlet 12 .
  • the base 16 is disposed in the case 10 .
  • the rotor 15 is rotatably connected to the base 16 via a shaft 17 .
  • the shaft 17 may be engaged to an opening 166 of the base 16 and a hole 156 of the rotor 15 is then telescoped onto the shaft 17 or the shaft 17 may be engaged to the hole 156 of the rotor 15 and then telescoped onto the base 16 , such that the rotor 15 rotates according to the base 16 .
  • a coil 18 is disposed around the shaft 17 .
  • the rotor 15 includes an impeller 154 and a magnetic extension portion 152 .
  • case 10 further includes a ring gasket 19 disposed between the rotor 15 and the case 10 and telescopes onto the shaft 17 .
  • the ring gasket 19 is wear-resisting ceramic metal to limit the rotor 15 to rotate according to the shaft 17 .
  • the volume is limited.
  • the volume of the magnetic extension of the rotor and the coil is reduced such that the efficiency of the pump is decreased.
  • the application of water-cooling systems with pumps is limited.
  • the invention provides pumps increasing the torque and speed of rotors and further enhancing efficiency of the pumps while keeping the same volume and same structure arrangements.
  • An exemplary embodiment of a pump includes a case, a base and a rotor.
  • the base is disposed in the case for supporting a coil.
  • the rotor comprises a shaft, an impeller and a magnetic extension portion.
  • the rotor is coupled to the base via the shaft, the magnetic extension portion surrounds the coil, and the magnetic extension portion comprises a yoke disposed therein.
  • the coil is disposed around the base and adjacent to the shaft.
  • the rotor may further comprise a hole, the shaft is mounted into the hole so that the rotor rotates with respect to the base.
  • the shaft may be connected to the rotor and mounted into the base so that the rotor rotates with respect to the base.
  • the pump may further comprise a first magnet and a second magnet.
  • the first magnet is disposed on the rotor
  • the second magnet is disposed inside the case corresponding to the first magnet
  • a magnetic force is generated between the first and second magnets to limit the rotor to rotate in a predetermined position.
  • the magnetic force may be a repulsive force along an axial direction of the shaft.
  • profiles of the first and second magnets may be selected from the group consisting of a hollow pillar, a cylinder, a cuboid and an annular plate.
  • the first and second magnets may have the same profile.
  • a profile of the yoke may be selected from the group consisting of a hollow pillar, a cylinder, a cuboid and an annular plate.
  • FIG. 1 is a schematic diagram of a conventional pump
  • FIG. 2A is a sectional view of a conventional pump
  • FIG. 2B is an enlarged view of a rotor in a pump
  • FIG. 3A is a sectional view of a pump according to the invention.
  • FIG. 3B is an enlarged view of a rotor in a pump according to the invention.
  • FIG. 4 is a curve distribution diagram of induction magnetic flux density of a rotor of a pump according to the invention and a rotor of a conventional pump.
  • the pump 3 of the invention comprises a case 30 , a base 36 and a rotor 35 , and the arrangements and functions are similar to conventional.
  • the rotor 35 of the invention comprises a magnetic extension portion 352 comprising a yoke 357 disposed therein.
  • the yoke 357 is completely surrounded by the magnetic extension portion 352 .
  • the profile of the yoke 357 is selected from a group consisting of a hollow pillar, a cylinder, a cuboid and an annular plate.
  • the magnetic extension portion 352 rotates during induction of the magnetic field, the yoke 357 is allowed to concentrate the magnetic force of the magnetic field, and the magnetic force is concentrated and passes through the magnetic extension portion 352 . Thereafter, the magnetic extension portion 352 inducts more magnetic field than the conventional.
  • the rotor 35 generates more torque to rotate impeller 354 , and water pressure differential is enhanced, such that the pump 3 of the invention gains more efficiency without increasing volume.
  • the pump 3 of the invention is used not only for drawing water but for drawing any kind of liquid.
  • the pump 3 mentioned comprises yoke 357 , increasing the torque generated by the rotor 35 and further increasing the rotating speed and rotating force of the rotor 35 .
  • the rotor 35 cannot position only by a ring gasket telescoped onto the shaft as in the conventional.
  • the ring gasket is rapidly abraded.
  • the pump 3 of the invention further comprises a first magnet 391 and a second magnet 392 to solve the above problem.
  • the fist magnet 391 is disposed on the rotor 35 .
  • the second magnet 392 is disposed inside the case 30 corresponding to the first magnet 391 .
  • Profiles of the first and second magnets 391 and 392 may be selected from a group consisting of a hollow pillar, a cylinder, a cuboid and an annular plate.
  • the first and second magnets 391 and 392 have the same profile, but are not limited thereto, as long as a magnetic force along an axial direction of the shaft 37 is generated between the first and second magnets 391 and 392 .
  • the magnetic force may be a repulsive force, limiting the rotor 35 to rotate in a predetermined position without lifting upward.
  • the yoke is employed in the magnetic extension portion to allow the rotor to generate more torque.
  • An experiment is as follows. Two rotors have the same profile, one of them is a conventional rotor 15 as mentioned, and the other is a rotor 35 of the invention, in which both have the same size of coil generating the same magnetic field.
  • FIG. 4 shows an induction magnetic flux density curve 42 of rotor 35 of the invention and an induction magnetic flux density curve 41 of the conventional rotor 15 .
  • the horizontal axis indicates the rotating position of the rotor, and the vertical axis indicates the magnetic flux density inducted by the rotor.
  • the rotor 35 of the invention gains more magnetic flux density than the conventional rotor, proving the feature of the invention actually increasing the efficiency of the pump.
  • the yoke disposed inside the magnetic extension portion according to the invention may generate the efficiency mentioned above.
  • the yoke is completely surrounded by the magnetic extension portion. Due to the operation of the pump, water contacts the surface of the magnetic extension portion. When exposed to water, the yoke is rust. Otherwise, any kind of rotor may employ the feature of the invention to increase efficiency of the pump. It is to be understood that the mentioned rotor, elements or size thereof are an example and are not limited to the disclosed embodiments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
US11/081,519 2004-10-15 2005-03-17 Pump Abandoned US20060083643A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW093131276A TWI301743B (en) 2004-10-15 2004-10-15 Water pump
TW93131276 2004-10-15

Publications (1)

Publication Number Publication Date
US20060083643A1 true US20060083643A1 (en) 2006-04-20

Family

ID=36180963

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/081,519 Abandoned US20060083643A1 (en) 2004-10-15 2005-03-17 Pump

Country Status (3)

Country Link
US (1) US20060083643A1 (zh)
JP (2) JP2006112416A (zh)
TW (1) TWI301743B (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060280631A1 (en) * 2005-06-10 2006-12-14 Delta Electronics, Inc. Centrifugal pump
WO2012001184A1 (es) * 2010-06-28 2012-01-05 Gamesa Innovation & Technology, S.L. Módulo de placa de cubierta de imanes para generadores, disposición, procedimiento de montaje y desmontaje del mismo
EP2072825A3 (de) * 2007-12-21 2012-03-28 Geräte- und Pumpenbau GmbH Merbelsrod Kühlmittelpumpe

Families Citing this family (2)

* 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
JP7267560B2 (ja) * 2018-12-21 2023-05-02 ニデックインスツルメンツ株式会社 ポンプ装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060280631A1 (en) * 2005-06-10 2006-12-14 Delta Electronics, Inc. Centrifugal pump
EP2072825A3 (de) * 2007-12-21 2012-03-28 Geräte- und Pumpenbau GmbH Merbelsrod Kühlmittelpumpe
WO2012001184A1 (es) * 2010-06-28 2012-01-05 Gamesa Innovation & Technology, S.L. Módulo de placa de cubierta de imanes para generadores, disposición, procedimiento de montaje y desmontaje del mismo
ES2378716A1 (es) * 2010-06-28 2012-04-17 GAMESA INNOVATION & TECHNOLOGY, S.L Módulo de placa de cubierta de imanes para generadores, disposición, procedimiento de montaje y desmontaje del mismo.

Also Published As

Publication number Publication date
TW200612813A (en) 2006-04-16
TWI301743B (en) 2008-10-01
JP2006112416A (ja) 2006-04-27
JP3145002U (ja) 2008-09-25

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Legal Events

Date Code Title Description
AS Assignment

Owner name: DELTA ELECTRONICS, INC., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHEN, HOU-CHU;CHEN, WEN-CHUAN;WENG, CHIA-CHING;REEL/FRAME:016390/0072;SIGNING DATES FROM 20041217 TO 20041220

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION