WO2012174718A1 - Pompe à eau électrique à rotor à aimant permanent monophasé tournant uniquement dans la bonne direction et son procédé de réalisation - Google Patents

Pompe à eau électrique à rotor à aimant permanent monophasé tournant uniquement dans la bonne direction et son procédé de réalisation Download PDF

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Publication number
WO2012174718A1
WO2012174718A1 PCT/CN2011/076159 CN2011076159W WO2012174718A1 WO 2012174718 A1 WO2012174718 A1 WO 2012174718A1 CN 2011076159 W CN2011076159 W CN 2011076159W WO 2012174718 A1 WO2012174718 A1 WO 2012174718A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
impeller
water chamber
chamber
permanent magnet
Prior art date
Application number
PCT/CN2011/076159
Other languages
English (en)
Chinese (zh)
Inventor
吴望
曾小泉
Original Assignee
深圳市兴日生实业有限公司
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 深圳市兴日生实业有限公司 filed Critical 深圳市兴日生实业有限公司
Priority to EP11868083.4A priority Critical patent/EP2725234A4/fr
Priority to US14/127,262 priority patent/US20140127040A1/en
Priority to PCT/CN2011/076159 priority patent/WO2012174718A1/fr
Publication of WO2012174718A1 publication Critical patent/WO2012174718A1/fr

Links

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
    • 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
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0077—Safety measures
    • 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
    • F04D29/426—Casings; Connections of working fluid for 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
    • F04D29/40—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

Definitions

  • the present invention relates to a rotary non-variable-capacity pumping device and a drag mechanism thereof, and more particularly to a curved water impeller of the pumping device
  • the method of increasing the difference in resistance torque between turning and reversing in particular, relates to a method and a device for causing a single-phase permanent magnet rotor motor to drive only the correct direction of rotation.
  • BACKGROUND OF THE INVENTION The prior art drives a centrifugal water pump by means of a single-phase AC permanent magnet rotor synchronous motor, and the permanent magnet rotor and the water impeller coaxial line of the centrifugal water pump are directly coupled, see FIG.
  • the structure is simple, the shape is light, and the production is simple. It is easy, and the cost is relatively low, and it is widely used.
  • the starting torque of the single-phase permanent magnet rotor synchronous motor is almost zero, and any water flow disturbance will affect and change the direction of starting and running of the motor rotor, that is, the direction of starting and running of the motor rotor is uncertain and random. of. Because of this, earlier in the prior art, such single-phase permanent magnet rotor electric water pumps were in the form of water impellers and intermediate outlets with very low efficiency straight blades, ie the central axis of the outlet holes fell in the water impeller radial direction. And orthogonal to the central axis of the water impeller, as shown in Figure 6.
  • the resistance torque of the curved water impeller in forward and reverse rotation should be first sought.
  • the difference is increased, so that in the starting state, when the rotor assembly of the electric water pump is somewhat shaken, it naturally rotates in a direction in which the resistance torque is small, and the faster the rotation, until the synchronous rotation speed is reached.
  • Another issue to consider is the range of voltage fluctuations of the power supply. Analysis shows that if the supply voltage of the drag motor deviates from the rated value, the drag torque will be more deviated.
  • the technical problem to be solved by the present invention is to avoid the deficiencies of the prior art described above, and to provide a centrifugal water pump that is driven by a single-phase permanent magnet rotor motor with only correct rotation direction without increasing the cost.
  • the method and device can greatly improve the energy efficiency of such a pump, and can be applied to an area where the voltage fluctuation range of the power supply network is larger.
  • the technical problem solved by the present invention can be achieved by using the following technical solutions: Proposed a single-phase permanent magnet rotor electric The method in which the pump only has the correct direction of rotation, including the steps
  • the tangential water discharge form is adopted such that the inner wall of the water outlet pipe disposed on the radial side of the water chamber and communicating with the water chamber is away from the central axis of the water chamber, Parallel to the outer side of the tangential line of the inner wall of the water chamber for a distance ⁇ , resulting in a catastrophic structure, further increasing the resistance torque of the curved water impeller rotating in the wrong direction;
  • the space volume of the water chamber in the step ⁇ refers to the entire space after the water chamber is closed by the water chamber cover Volume.
  • the geometric relationship of the mutated structure in the step B is satisfied.
  • the method for making the single-phase permanent magnet rotor electric water pump only have the correct direction of rotation further includes the steps
  • the movable baffle can rotate on the inner wall of the water chamber about an axial axis; and the back surface of the curved water impeller is provided with a substrate having a diameter slightly larger than the diameter of the arc water impeller.
  • the water impeller is reversed, the water flow blasts the movable baffle to lift it against the edge of the substrate, hindering the water impeller from reversing.
  • the invention also provides a high-efficiency electric water pump with only the correct direction of rotation, comprising a pump body and a water chamber having a substantially cylindrical space therein, the water chamber cover of the axially outer end of the water chamber defining a water chamber a space of the chamber, the arcuate water impeller on the rotor assembly is coaxially received in the space of the water chamber, and the permanent magnet rotor of the single-phase synchronous motor coaxially mounted by the water impeller is dragged and rotated;
  • the radial side of the water chamber is provided with a water outlet pipe communicating with the water chamber; in particular, the space volume of the water chamber is more than three times the space occupied by the water blades of the inner curved water impeller; while the diameter D of the water chamber is coaxial impeller than 1.2 times of water of its inner diameter D Y, where the water volume space of the chamber means, all the space after the cap is closed water chamber of the water chamber Volume
  • the inner wall of the water outlet pipe is away from the central axis
  • the present invention has only a high-efficiency electric water pump of correct rotation direction, and further includes at least one movable file disposed on the inner wall of the water chamber and rotating around an axial axis of the inner wall of the water chamber. plate, and said arcuate back surface of the water wheel is provided with a slightly larger diameter than the substrate of the impeller diameter D y of water, an impeller flow reversal, the water activity tailgate flung against the water wheel so that the tilt of the substrate The edge prevents the water impeller from reversing.
  • FIG. 1 is a front elevational view showing the overall appearance of a preferred embodiment of a single-phase permanent magnet rotor electric water pump according to the present invention, wherein FIG. 1-1 is a front view, and is a cross-sectional view taken along line AA of FIG. 1-2; FIG.
  • FIG. 2 is a schematic projection view of the overall appearance of the preferred embodiment, wherein FIG. 2-1 is a schematic exploded view; FIG. 1-1 is a schematic view of the assembled axial projection;
  • FIG. 3 is a schematic projection view of the electric centrifugal water pump rotor assembly 4, including FIG. 3-1 as an exploded state schematic view;
  • FIG. 3-2 is a schematic view of the assembled axial projection;
  • FIG. 4 is a front elevational view showing the overall appearance of another preferred embodiment of the single-phase permanent magnet rotor electric water pump of the present invention, wherein FIG. 4-1 is a front cross-sectional view of the curved water impeller in the forward rotation, and the movable baffle 33 is bottomed.
  • Figure 4-2 is a front cross-sectional view of the curved water impeller in reverse, the movable baffle 33 stands up, the two figures are AA cross-sectional view of Figure 4-3;
  • Figure 4-3 is a top view;
  • FIG. 5 is a front projection view of the overall appearance of a prior art single-phase permanent magnet rotor electric water pump (arc water impeller), wherein FIG. 5-1 is a front view, which is a cross-sectional view taken along line AA of FIG. 5-2; and FIG. 5-2 is a top view. ;
  • FIG. 6 is a front elevational view of the overall appearance of a single-phase permanent magnet rotor electric water pump (straight water blade) in the prior art, wherein FIG. 6-1 is a front view, which is a cross-sectional view taken along line AA of FIG. 6-2; 2 is a top view.
  • FIG. 6-1 is a front view, which is a cross-sectional view taken along line AA of FIG. 6-2; 2 is a top view.
  • DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for the single-phase permanent magnet rotor electric water pump to have only the correct direction of rotation, including steps
  • the tangential water discharge form is adopted such that the inner wall of the water outlet pipe disposed on the radial side of the water chamber and communicating with the water chamber is away from the central axis of the water chamber, Parallel to the outer side of the tangential line of the inner wall of the water chamber for a distance ⁇ , resulting in a catastrophic structure to increase the resistance of the curved water impeller to rotate in the wrong direction;
  • the electric water pump has only the correct direction of rotation against the bending direction of the water blades in the entire fluctuation range of the supply voltage.
  • Step A space volume of the water chamber in the crucible refers to the total volume of the space after the water chamber is closed by the water chamber cover.
  • the geometric relationship satisfies 0. 50 > ⁇ / (! > (). 20, where d is the inner diameter of the water outlet pipe.
  • the geometric relationship of the mutated structure in the step B is satisfied.
  • the method for the single-phase permanent magnet rotor electric water pump to have only the correct direction of rotation further includes the steps
  • the movable baffle can rotate on the inner wall of the water chamber about an axial axis; and the back surface of the curved water impeller is provided with a substrate having a diameter slightly larger than the diameter of the arc water impeller.
  • the water impeller is reversed, the water flow blasts the movable baffle to lift it against the edge of the substrate, hindering the water impeller from reversing.
  • the single-phase permanent magnet rotor electric water pump of the present invention has only the correct rotation direction, as shown in FIGS. 1 to 3, and includes a pump body 2 and a water chamber 3 having a substantially cylindrical space therein, and an axially outer end of the water chamber 3
  • the assembled water chamber cover 8 defines a space for the water chamber 3, and the curved water impeller 42 on the rotor assembly 4 is housed coaxially within the space of the water chamber 3, and is coaxially mounted by the water impeller 42
  • the permanent magnet rotor 41 of the phase synchronous motor is dragged and rotated; a water outlet pipe 7 communicating with the water chamber 3 is disposed on a radial side of the water chamber 3; in particular, the inner wall 71 of the water outlet pipe 7 is far away
  • a portion of the central axis 00' of the water chamber 3 is moved parallel to the outside by a distance ⁇ from the tangent of the inner wall 31 of the water chamber 3, resulting in an abrupt structure 6, thereby further increasing the arcuate water imp
  • the spatial volume of the water chamber 3 is more than three times that of the inner curved water impeller 42 when the water blades 45 rotate, and the water chamber diameter D is 1 of the inner coaxial water impeller diameter D y 2 times or more, the space volume of the water chamber 3 herein refers to the total volume of the space after the water chamber 3 is closed by the water chamber cover 8;
  • the single-phase permanent magnet rotor electric water pump having only the correct rotation direction further includes at least one axial member disposed on the inner wall 31 of the water chamber and surrounding the inner wall 31 of the water chamber.
  • activity baffle axis of rotation 33 while the back of the water wheel 42 is provided with an arcuate substrate having a diameter slightly larger than the diameter D y 42 water impeller 43, the impeller 42 flow reversal, the water activity red open tailgate 33 It is lifted up against the edge of the water impeller substrate 43, and the water impeller 42 is prevented from being reversed.
  • Fig. 5 The prior art single-phase permanent magnet rotor electric water pump is shown in Fig. 5 and Fig. 6, wherein Fig. 5 is a curved water impeller and a tangential effluent form, and Fig. 6 is a water impeller and a middle effluent form of a straight blade.
  • Fig. 5 2 is the pump body
  • 3 is the water chamber
  • 31 is the inner wall of the water chamber
  • 32 is the tangential outlet pipe
  • 45 the curved water blade.
  • Fig. 6 2 is the pump body
  • 3 the water chamber
  • 10 is the straight water impeller
  • 11 is the intermediate outlet pipe.
  • the prior art single-phase permanent magnet rotor electric water pump has the problems of high cost, complicated structure and low reliability.

Landscapes

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

Abstract

L'invention concerne une pompe électrique à rotor à aimant permanent monophasé tournant uniquement dans la bonne direction et son procédé de réalisation. Le procédé comprend les étapes suivantes : la régulation de la taille d'une chambre d'eau (3) à l'intérieur d'un corps de pompe à eau (2) de sorte que le volume de l'espace de la chambre d'eau représente au moins 3 fois celui d'un espace enserré par chaque pale (45) d'une turbine à eau en arc interne (42) pendant la rotation et que le diamètre de la chambre d'eau représente au moins 1,2 fois celui de la turbine à eau au niveau de son axe commun ; la conception du corps de pompe à eau de sorte qu'une partie d'une paroi interne d'une conduite d'évacuation d'eau (7) située à distance de l'axe central (OO') de la chambre d'eau soit déviée parallèlement vers l'extérieur à une distance Δ d'une tangente de la paroi interne de la chambre d'eau (31), ce qui permet d'établir une structure étagée (6) ; la sélection d'un moteur à rotor à aimant permanent monophasé présentant un couple approprié permettant d'entraîner la turbine à eau en arc à l'intérieur du corps de pompe à eau et la limitation de la plage de fluctuation de la tension d'alimentation, ce qui permet de garantir que la pompe à eau électrique tourne uniquement dans la bonne direction et contre la direction de flexion de la pale d'eau individuelle. Le présent procédé permet à la pompe à eau de tourner dans la bonne direction dans une condition d'alimentation en courant alternatif monophasé dans laquelle la fluctuation peut atteindre 20 % de la tension nominale.
PCT/CN2011/076159 2011-06-22 2011-06-22 Pompe à eau électrique à rotor à aimant permanent monophasé tournant uniquement dans la bonne direction et son procédé de réalisation WO2012174718A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11868083.4A EP2725234A4 (fr) 2011-06-22 2011-06-22 Pompe à eau électrique à rotor à aimant permanent monophasé tournant uniquement dans la bonne direction et son procédé de réalisation
US14/127,262 US20140127040A1 (en) 2011-06-22 2011-06-22 Single-phase permanent magnet rotor electric water pump only rotating in right direction and its realization method
PCT/CN2011/076159 WO2012174718A1 (fr) 2011-06-22 2011-06-22 Pompe à eau électrique à rotor à aimant permanent monophasé tournant uniquement dans la bonne direction et son procédé de réalisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/076159 WO2012174718A1 (fr) 2011-06-22 2011-06-22 Pompe à eau électrique à rotor à aimant permanent monophasé tournant uniquement dans la bonne direction et son procédé de réalisation

Publications (1)

Publication Number Publication Date
WO2012174718A1 true WO2012174718A1 (fr) 2012-12-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/076159 WO2012174718A1 (fr) 2011-06-22 2011-06-22 Pompe à eau électrique à rotor à aimant permanent monophasé tournant uniquement dans la bonne direction et son procédé de réalisation

Country Status (3)

Country Link
US (1) US20140127040A1 (fr)
EP (1) EP2725234A4 (fr)
WO (1) WO2012174718A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109185230A (zh) * 2018-11-14 2019-01-11 南京腾图节能科技有限公司 一种减小水泵运行噪声的装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0574823A2 (fr) 1992-06-17 1993-12-22 ASKOLL S.p.A. Dispositif électronique de démarrage pour un moteur synchrone avec rotor à aimants permanents
US5711657A (en) * 1994-07-15 1998-01-27 Oase-Pumpen Wuebker Soehne Gmbh & Co. Maschinenfabrik Centrifugal pump, particularly for fountains
US6988873B2 (en) * 2000-07-06 2006-01-24 Askoll Holding S.R.L. Monodirectional impeller with flexible vanes
CN1929264A (zh) * 2005-08-30 2007-03-14 阿斯科尔控股有限公司 具有改善了的定子结构的永磁单相同步电动马达，特别用于洗涤机及类似家用电器的排水泵
CN100363627C (zh) * 2004-11-17 2008-01-23 深圳市兴日生实业有限公司 一种自动按正确方向旋转的电动水泵
CN100561855C (zh) * 2007-11-13 2009-11-18 广东博宇水族实业有限公司 一种采用交流电源驱动永磁电机潜水泵的抽水方法及装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2573489A1 (fr) * 1984-11-22 1986-05-23 Rena Pompe electrique pour liquide
GB8903563D0 (en) * 1989-02-16 1989-04-05 Hozelock Ltd Pumps
GB2353330B (en) * 1999-08-04 2003-05-28 Pet Mate Ltd Pond pump
US6719525B2 (en) * 2001-12-20 2004-04-13 Chi-Der Chen Submerged motor vane wheel rotation direction control structure
EP1640617A3 (fr) * 2004-09-24 2012-08-08 Shenzhen Xing Risheng Industrial Co., Ltd. Pompe à tourbillon

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0574823A2 (fr) 1992-06-17 1993-12-22 ASKOLL S.p.A. Dispositif électronique de démarrage pour un moteur synchrone avec rotor à aimants permanents
US5711657A (en) * 1994-07-15 1998-01-27 Oase-Pumpen Wuebker Soehne Gmbh & Co. Maschinenfabrik Centrifugal pump, particularly for fountains
US6988873B2 (en) * 2000-07-06 2006-01-24 Askoll Holding S.R.L. Monodirectional impeller with flexible vanes
CN100363627C (zh) * 2004-11-17 2008-01-23 深圳市兴日生实业有限公司 一种自动按正确方向旋转的电动水泵
CN1929264A (zh) * 2005-08-30 2007-03-14 阿斯科尔控股有限公司 具有改善了的定子结构的永磁单相同步电动马达，特别用于洗涤机及类似家用电器的排水泵
CN100561855C (zh) * 2007-11-13 2009-11-18 广东博宇水族实业有限公司 一种采用交流电源驱动永磁电机潜水泵的抽水方法及装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2725234A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109185230A (zh) * 2018-11-14 2019-01-11 南京腾图节能科技有限公司 一种减小水泵运行噪声的装置

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Publication number Publication date
US20140127040A1 (en) 2014-05-08
EP2725234A4 (fr) 2015-04-01
EP2725234A1 (fr) 2014-04-30

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