WO2021129573A1 - 泵及其电机定子 - Google Patents

泵及其电机定子 Download PDF

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Publication number
WO2021129573A1
WO2021129573A1 PCT/CN2020/138036 CN2020138036W WO2021129573A1 WO 2021129573 A1 WO2021129573 A1 WO 2021129573A1 CN 2020138036 W CN2020138036 W CN 2020138036W WO 2021129573 A1 WO2021129573 A1 WO 2021129573A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
fixed
elastic member
insulating frame
pump
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.)
Ceased
Application number
PCT/CN2020/138036
Other languages
English (en)
French (fr)
Inventor
秦锐锋
敬毅
黄本松
邹国渊
曾德涅
方震子
梁冠殷
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.)
Johnson Electric Guangdong Co Ltd
Original Assignee
Johnson Electric Guangdong 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 Johnson Electric Guangdong Co Ltd filed Critical Johnson Electric Guangdong Co Ltd
Priority to EP20906662.0A priority Critical patent/EP4064529A4/en
Publication of WO2021129573A1 publication Critical patent/WO2021129573A1/zh
Priority to US17/808,782 priority patent/US12355303B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F04D13/0606—Canned motor pumps
    • F04D13/064—Details of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
    • 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
    • F04D29/426—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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/021—Magnetic cores
    • H02K15/022—Magnetic cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/12—Machines characterised by the bobbins for supporting the windings

Definitions

  • the invention relates to the field of electric technology, in particular to a pump and its motor stator.
  • a pump is a machine that transports fluid or pressurizes fluid. It usually includes a rotatable motor rotor, a motor stator fixed in a housing, and a printed circuit board electrically connected to the motor stator.
  • the alternating electromagnetic field causes the motor stator to bear alternating loads. If the motor stator is not sufficiently fixed, it will vibrate, which will increase the noise during pump operation, and the large vibration will also cause the pump.
  • the printed circuit boards and other electronic components and other parts are loose or even fall off.
  • the stator of the motor is usually fixed on the housing by a matching connection of bolts and a plurality of coil springs, and this fixing method causes problems such as high cost and easy loosening or falling off of the coil springs.
  • the present invention aims to provide a pump and its motor stator that can solve or at least alleviate the above-mentioned problems.
  • the present invention provides a motor stator for a pump, which is fixed in a housing and includes a stator core, an insulation frame fixed on the stator core, and a winding wound on the insulation frame, and also includes a stator core fixed on the stator core, and windings wound on the insulation frame.
  • the elastic member on the insulating frame is used for abutting against the housing or a component relatively fixed to the housing to prevent vibration of the stator.
  • the elastic member is ring-shaped and undulates along the axial direction, including a plurality of wave troughs and wave crests connected with each other at intervals, the wave troughs are fixed in the insulating frame, and the wave crests are used to communicate with the shell.
  • the body or the component abuts.
  • the elastic member has a broken ring shape, the elastic member is broken at one of the troughs, and two fixed ends are formed at the fracture, and the two fixed ends bend and extend from the troughs, The two fixed ends are embedded and fixed on the insulating frame.
  • the insulating frame includes a plurality of outer baffles arranged at intervals in the circumferential direction, and a first fixing part and at least one second fixing part extending radially outward are provided at different outer baffles.
  • the sum of the numbers of the first fixing parts and the second fixing parts corresponds to the number of the wave troughs.
  • the two fixed ends and the trough where they are located are fixed in the first fixed part.
  • the elastic member includes at least two pairs of the wave troughs and the wave crests.
  • the elastic member is integrally fixed on the insulating frame in an insert molding manner.
  • the present invention provides a pump including a housing, a motor and an impeller arranged in the housing, the motor includes a stator and a rotor, the impeller and the rotor are connected, and the stator is the above-mentioned stator.
  • the pump further includes a sleeve fixed with respect to the housing, the sleeve includes an outer wall and a body part located inside the outer wall, and the stator is sleeved on the periphery of the body part , The body part is connected with the outer wall through a connecting part.
  • the elastic member of the stator abuts the connecting portion.
  • a side of the connecting portion facing the stator is provided with a rib, and the elastic member abuts against the rib.
  • the plurality of the ribs extend radially from the center of the connecting portion toward the periphery.
  • the motor stator and the pump with the motor stator provided by the embodiments of the present invention adopt elastic parts formed on the insulating frame by inserts to prevent vibration of the motor stator.
  • the structure is simple, the number of parts is reduced, the assembly process is simplified, and the The reliability and stability of the pump.
  • Fig. 1 shows a three-dimensional assembly view of a pump according to an embodiment of the present invention.
  • Fig. 2 shows a perspective exploded view of the pump shown in Fig. 1.
  • Fig. 3 shows an axial sectional view of the pump shown in Fig. 1.
  • Fig. 4 shows a perspective view of an axial section when a part of the stator structure of the pump shown in Fig. 1 is installed in a sleeve.
  • Fig. 5 shows a partial cross-sectional view of a part of the stator structure of the pump shown in Fig. 1 when it is installed on the sleeve.
  • Fig. 6 shows a perspective view of an insulating frame to which an elastic member is fixed on the stator of the pump shown in Fig. 1.
  • Fig. 7 shows a perspective view of an elastic member according to an embodiment of the present invention.
  • Fig. 8 shows a perspective view of an elastic member according to another embodiment of the present invention.
  • Fig. 9 shows a perspective view of an insulating frame to which the elastic member shown in Fig. 8 is fixed.
  • a pump 200 includes a housing 100, a motor 101 and an impeller 42 arranged in the housing 100.
  • the housing 100 includes an upper housing 1 and a lower housing 3 connected to each other. And a sleeve 2 received in the lower shell 3 and connected and fixed with the lower shell 3.
  • the motor 101 includes a stator 5 and a rotor 4, the rotor 4 is accommodated in the sleeve 2, and the stator 5 is arranged in an accommodation space formed by the sleeve 2 and the housing 100.
  • a support shaft 27 is fixed in the sleeve 2, preferably by insert molding.
  • the rotor 4 is rotatably supported in the sleeve 2 by a support shaft 27.
  • the impeller 42 is connected to the rotor 4.
  • the impeller 42 and the rotor 4 are formed integrally.
  • the impeller 42 is detachably attached to the rotor 4.
  • the sleeve 2 includes a body part 21 and an outer wall 22 connected to one end of the body part 21.
  • the main body 21 is a cylindrical structure whose one end faces the upper shell 1 of the casing 100 and the other end is closed.
  • the outer wall 22 has an annular shape, and is arranged around and spaced from the periphery of the main body 21.
  • One end of the outer wall 22 is connected to the open end of the main body 21 through the connecting portion 28, and the other end extends toward the closed end of the main body 21.
  • the outer wall 22 has an outer ring 23 extending in the axial direction.
  • the upper shell 1 of the housing 100 has an open end 12 of the upper shell facing the lower shell 3.
  • the open end 12 of the upper shell may be joined between the outer ring 23 and the outer wall 22.
  • the lower shell 3 has an open end 32 of the lower shell facing the upper shell 1.
  • An end cover 6 with a circuit board 7 is installed on an end of the lower shell 3 away from the open end 32 of the lower shell through a connector 9.
  • the open end 32 of the lower shell is connected to the outer wall 22 of the sleeve 2.
  • the open end 32 of the lower shell is connected to the inner side of the outer wall 22.
  • the stator 5 is accommodated in the accommodation space formed by the sleeve 2 and the lower shell 3, and the rotor 4 and the impeller 42 are accommodated in the accommodation space formed by the sleeve 2 and the upper shell 1.
  • the inside of the body portion 21 of the sleeve 2 forms a sleeve accommodating cavity 26 for accommodating the rotor 4.
  • the rotor 4 is rotatably supported in the sleeve receiving cavity 26 via a support shaft 27.
  • the support shaft 27 is formed at the closed end 25 of the main body 21 by insert molding.
  • the stator 5 is installed on the inner wall of the lower shell 3 and sleeved on the periphery of the main body 21.
  • the stator 5 is arranged in the accommodation space formed by the sleeve 2 and the lower shell 3 by means of an axial press fit, that is, one axial end of the stator 5 abuts the connecting portion 28, and the other axial end abuts The lower shell 3 is topped, thereby preventing the stator 5 from loosening due to vibration.
  • the stator 5 includes a stator core 53, an insulating frame 50 fixed on the stator core 53, a plurality of windings 54 wound on the insulating frame 50, and an elastic member 55 installed on the insulating frame 50.
  • the insulating frame 50 includes a plurality of inner baffles 56 and a corresponding number of outer baffles 57 for winding the winding 54 to stop.
  • the stator 5 is installed on the body portion 21 of the sleeve 2 through an inner baffle 56 located on the inner side.
  • a plurality of ribs 24 are provided on the outer side of the main body 21 to prevent the stator 5 from moving on the main body 21 in the circumferential direction.
  • the rib 24 extends in the axial direction at the outer side of the body portion 21.
  • each inner baffle 56 is clamped between two adjacent ribs 24.
  • the elastic member 55 is fixed on the insulating frame 50 by insert molding. Referring to FIG. 5 at the same time, the elastic member 55 is fixed at one end of the insulating frame 50 adjacent to the connecting portion 28 of the sleeve 2. The elastic member 55 presses against the connecting portion 28 to press the insulating frame 50 to the closed end of the lower shell 3.
  • the lower shell 3 includes a resisting portion 33 extending in the radial direction from the inner side thereof inward.
  • the stator core 53 abuts against the blocking portion 33 under the action of the elastic member 55.
  • the ribs 24 also extend from the body portion 21 to the side of the connecting portion 28 facing the closed end of the lower shell 3.
  • the elastic member 55 abuts the rib 24 arranged on the connecting portion 28.
  • the ribs 24 extend radially from the center of the connecting portion 28 toward the periphery.
  • the lower shell 3 includes a step 34 extending radially inward from its inner side to resist the other end of the insulating frame 50. Therefore, in this case, the elastic member 55 presses the stator 5 against the connecting portion. Between 28 and step 34.
  • the insulating frame 50 includes a first frame 51 and a second frame 52 arranged up and down.
  • the first frame 51 and the second frame 52 are installed and fixed on the stator core 53 from opposite ends of the stator core 53.
  • the elastic member 55 is fixed on the first frame 51 by insert molding.
  • the end of the first frame 51 adjacent to the connecting portion 28 of the sleeve 2 is provided with a first fixing portion 511 and a second fixing portion 512 extending radially outward.
  • the outer baffle 57 is arranged on the first frame 51.
  • the first fixing portion 511 and the second fixing portion 512 are located at different outer baffles 57 respectively.
  • the first fixing portion 511 and the second fixing portion 512 are respectively located at two opposite outer baffles 57.
  • the radially outer side of the first fixing portion 511 has a through slot 513 opened in the axial direction, and a through hole 514 is opened in the middle of the second fixing portion 512 to position the elastic member 55 during insert molding.
  • the elastic member 55 is annular and undulates along the axial direction, that is, the elastic member 55 is not on the same plane as a whole.
  • the elastic member 55 includes a plurality of wave troughs 551 and wave crests 552.
  • the trough 551 and the crest 552 are connected to each other at intervals.
  • the trough 551 is fixed in the insulating frame 50.
  • the wave crest 552 is used for abutting against the housing 100 or a component relatively fixed to the housing 100 to prevent vibration of the stator 5.
  • the wave crest 552 abuts the connecting portion 28 of the sleeve 2 and presses the stator 5 to the lower shell 3 in a press-fit manner.
  • the elastic member 55 is formed by bending a strip of spring material (for example, spring steel, etc.).
  • the elastic member 55 is broken at one of the wave troughs 551 and two fixed ends 550 are formed at the fracture.
  • the two fixed ends 550 are bent in a direction different from the extending direction of the wave trough 551.
  • the two fixed ends 550 extend vertically upward from the trough where they are located.
  • the fixed end 550 can also be bent radially outward from the trough.
  • the fixed end 550 and the trough 551 where it is located are fixed in the first fixing portion 511 of the first frame 51.
  • the arrangement of the fixing end 550 enables the elastic member 55 to be firmly fixed in the insulating frame 50.
  • the elastic member 55 may also be a wave spring without a fixed end.
  • the elastic member 55 has two pairs of wave troughs 551 and wave crests 552. Therefore, in this embodiment, the first frame 51 includes a first fixing portion 511 and a second fixing portion 512. There are at least two pairs of wave troughs 551 and wave crests 552 of the elastic member 55, so that at least two wave crests 552 can abut the connecting portion 28 of the sleeve 2 to avoid unbalanced forces. Referring to FIGS.
  • the elastic member 55 of another embodiment of the present invention includes 6 pairs of wave troughs 551 and wave crests 552.
  • the wave troughs 551 and wave crests 552 of the elastic member 55 are evenly arranged corresponding to the outer baffle 57 of the insulating frame 50.
  • the wave trough 551 and the wave peak 552 are arranged in pairs and symmetrically. The designer can select the relative size and logarithm between the wave trough 551 and the wave crest 552 of the elastic member 55 according to the actual situation.
  • the wave crest 552 of the elastic member 55 abuts against the rib 24 at the connecting portion 28 of the sleeve 2.
  • the wave peak 552 includes two oblique sections 553 connected obliquely with the wave trough 551 and a flat section 554 located between the two oblique sections 553.
  • the flat section 554 is located at the highest position of the wave crest 552 and is approximately parallel to the connecting portion, so as to better fit the connecting portion 28 of the sleeve 2, that is, to abut the connecting portion 28 with a maximum contact area.
  • the flat section 554 is higher than the top end of the insulating frame 50 in the axial direction.
  • the elastic member 55 pushes against the connecting portion 28 of the sleeve 2 through the flat section 554 of the wave crest 552, and presses the stator 5 against the casing 3, thereby preventing the stator 5 from loosening or even falling off due to vibration.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Frames (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

一种泵（200）及其电机定子（5），用于泵（200）的电机定子（5）固定在泵壳（100）中，包括定子铁心（53）、固定在所述定子铁心（53）上的绝缘架（50）和绕制在所述绝缘架（50）上的绕组（54），还包括以嵌件成型的方式一体固定在所述绝缘架（50）上的弹性件（55），所述弹性件（55）用于与所述泵壳（100）或与所述泵壳（100）相对固定的部件抵接从而防止所述定子（5）的振动。电机定子（5）和具有该电机定子（5）的泵（200），采用嵌件成型在绝缘架（50）上的弹性件（55）来防止电机定子（5）的振动，结构简单，减少了零件数量并简化了组装过程，且提高了泵的可靠性和稳定性。

Description

泵及其电机定子 技术领域
本发明涉及电动技术领域，尤其涉及一种泵及其电机定子。
 背景技术
泵是输送流体或使流体增压的机械，通常包括可旋转的电机转子、固定在壳体中的电机定子和与电机定子电连接的印刷电路板等。在泵运行期间，交替变化的电磁场导致电机定子承受交变的载荷，在电机定子未充分固定的情况下会产生振动，从而使得泵运行期间的噪声增大，而且大幅度的振动还会导致泵的印刷电路板等电子元件以及其他零部件松动甚至脱落。电机定子通常以螺栓与多个螺旋弹簧的配合连接而固定在壳体上，而这种固定方式导致成本较高，以及螺旋弹簧容易松动或脱落等问题。
 技术问题
有鉴于此，本发明旨在提供一种可以解决或至少减轻上述问题的泵及其电机定子。
 技术解决方案
本发明提供了一种用于泵的电机定子，固定在壳体中，包括定子铁心、固定在所述定子铁心上的绝缘架和绕制在所述绝缘架上的绕组，还包括固定在所述绝缘架上的弹性件，所述弹性件用于与所述壳体或与所述壳体相对固定的部件抵接从而防止所述定子的振动。
在一些实施例中，所述弹性件成环形且沿轴向形成波动，包括多个彼此间隔连接的波谷和波峰，所述波谷固定在所述绝缘架中，所述波峰用于与所述壳体或所述部件抵接。
在一些实施例中，所述弹性件呈断开的环形，所述弹性件在其中一波谷处断开，并在断口处形成两固定端，所述两固定端自该波谷处弯折延伸，所述两固定端嵌入并固定在所述绝缘架上。
在一些实施例中，所述绝缘架包括多个沿周向间隔布置的外挡板，在不同的外挡板处设有沿径向向外延伸的第一固定部和至少一个第二固定部，所述第一固定部和所述第二固定部的数量之和对应于所述波谷的数量。
在一些实施例中，所述两固定端及其所在的波谷固定在所述第一固定部中。
在一些实施例中，所述弹性件包括至少两对所述波谷和所述波峰。
在一些实施例中，所述弹性件以嵌件成型的方式一体固定在所述绝缘架上。
本发明提供了一种泵，包括壳体、设置在所述壳体内的电机和叶轮，所述电机包括定子和转子，所述叶轮和所述转子连接，所述定子为上述的定子。
在一些实施例中，所述泵还包括相对所述壳体固定的一套筒，所述套筒包括外壁和位于所述外壁内侧的本体部，所述定子套设于所述本体部的外围，所述本体部通过一连接部与所述外壁连接。
在一些实施例中，所述定子的所述弹性件抵顶所述连接部。
在一些实施例中，所述连接部朝向所述定子的一侧设有肋条，所述弹性件抵顶所述肋条。
在一些实施例中，所述肋条有多个，所述多个肋条从所述连接部的中央朝周缘呈辐射状延伸。
 有益效果
本发明实施例提供的电机定子和具有该电机定子的泵，采用嵌件成型在绝缘架上的弹性件来防止电机定子的振动，结构简单，减少了零件数量并简化了组装过程，且提高了泵的可靠性和稳定性。
 附图说明
图1示出了本发明一实施例的泵的立体组合图。
图2示出了图1所示的泵的立体分解图。
图3示出了图1所示的泵的轴向剖面图。
图4示出了图1所示的泵的定子的部分结构安装在套筒时的轴向剖面立体图。
图5示出了图1所示的泵的定子的部分结构安装在套筒时的部分剖面图。
图6示出了图1所示的泵的定子的固定有弹性件的绝缘架的立体图。
图7示出了本发明一实施例的弹性件的立体图。
图8示出了本发明另一实施例的弹性件的立体图。
图9示出了固定有图8所示的弹性件的绝缘架的立体图。
附图标记：200-泵；100-壳体；101-电机；1-上壳；12-上壳开口端；2-套筒；21-本体部；22-外壁；23-外环；24-肋条；25-封闭端；26-套筒收容腔；27-支撑轴；28连接部；3-下壳；32-下壳开口端；33-抵挡部；34-台阶；4-转子；41-转子主体；42-叶轮；5-定子；50-绝缘架；51-第一骨架；511-第一固定部；512-第二固定部；513-通槽；52-第二骨架；53-定子铁心；54-绕组；55-弹性件；550-固定端；551-波谷；552-波峰；553-斜段；554-平段；56-内挡板；57-外挡板；6-端盖；7-电路板；9-连接件。
 本发明的实施方式
以下将结合附图以及具体实施方式对本发明进行详细说明，以使得本发明的技术方案及其有益效果更为清晰明了。可以理解，附图仅提供参考与说明用，并非用来对本发明加以限制，附图中显示的尺寸仅仅是为了便于清晰描述，而并不限定比例关系。
同时参考图1至图3，本发明一实施例的泵200包括壳体100、设置在壳体100内的电机101和叶轮42。壳体100包括相互连接的上壳1和下壳3。及一收容于下壳3中并与下壳3连接固定的套筒2。所述电机101包括定子5和转子4，转子4收容于套筒2内，定子5设置在套筒2和壳体100形成的容纳空间中。一支撑轴27固定在套筒2中，优选通过嵌件成型的方式。转子4通过支撑轴27可旋转地支撑在套筒2中。所述叶轮42和转子4连接。在本实施例中，叶轮42与转子4形成为一体。在可选的实施例中，叶轮42可拆卸地附接至转子4。
套筒2包括本体部21和连接至本体部21一端的外壁22。本体部21为一端朝向壳体100的上壳1开口另一端封闭的筒状结构。外壁22呈环形，环设于本体部21的外围并与之间隔。外壁22的一端通过连接部28与本体部21开口端连接，另一端朝向本体部21的封闭端的方向延伸。在本实施例中，外壁22的外侧具有一沿轴向延伸的外环23。
在本实施例中，壳体100的上壳1具有朝向下壳3的上壳开口端12。上壳开口端12可接合在外环23和外壁22之间。下壳3具有朝向上壳1的下壳开口端32。下壳3的远离下壳开口端32的一端通过连接件9安装有具有电路板7的端盖6。下壳开口端32连接在套筒2的外壁22上，在本实施例中，下壳开口端32连接在外壁22的内侧。在本实施例中，定子5收容于套筒2和下壳3形成的容纳空间中，转子4和叶轮42收容于套筒2和上壳1形成的容纳空间中。
套筒2的本体部21的内部形成容纳转子4的套筒收容腔26。转子4通过支撑轴27可旋转地支撑在所述套筒收容腔26中。在本实施例中，支撑轴27通过嵌件成型的方式形成在本体部21的封闭端25。定子5安装于下壳3的内壁并套设于本体部21的外围。在本实施例中，定子5通过轴向压配合的方式布置在套筒2和下壳3形成的容纳空间中，即定子5的一轴向端抵顶连接部28，另一轴向端抵顶下壳3，从而阻止了定子5由于振动而松脱。
定子5包括定子铁心53、固定在定子铁心53上的绝缘架50、绕制于绝缘架50上的多个绕组54，以及安装在绝缘架50上的弹性件55。绝缘架50包括供绕组54缠绕止挡的多个内挡板56和相应数量的外挡板57。同时参考图4，定子5通过位于内侧的内挡板56安装在套筒2的本体部21上。本体部21的外侧设有多个肋条24，以阻止定子5在本体部21上沿其周向的移动。肋条24在本体部21的外侧处沿轴向延伸。在本实施例中，每一内挡板56卡设在相邻的两肋条24之间。
弹性件55通过嵌件成型的方式固定在绝缘架50上。同时参考图5，弹性件55固定在绝缘架50邻近套筒2的连接部28的一端部处。弹性件55抵顶连接部28，从而将绝缘架50压向下壳3的封闭端。下壳3包括自其内侧向内沿径向延伸的抵挡部33。定子铁心53在弹性件55的作用下抵顶在该抵挡部33上。在本实施例中，肋条24还自本体部21而延伸至连接部28朝向下壳3的封闭端的一侧。弹性件55抵顶布置在连接部28上的肋条24。优选地，这些肋条24从连接部28的中央朝周缘呈辐射状延伸。可选地，下壳3包括自其内侧向内沿径向延伸的台阶34，用于抵挡绝缘架50的另一端部，因此在这种情况下，弹性件55将定子5压靠在连接部28和台阶34之间。
在本实施例中，绝缘架50包括上下布置的第一骨架51和第二骨架52。第一骨架51和第二骨架52从定子铁心53的相对的两端处安装固定在定子铁心53上。弹性件55通过嵌件成型的方式固定在第一骨架51上。同时参考图6，第一骨架51邻近套筒2的连接部28的端部设有径向向外延伸的第一固定部511以及一个第二固定部512。所述外挡板57设置在第一骨架51上。在本实施例中，第一固定部511和第二固定部512分别位于不同的外挡板57处。优选地，第一固定部511和第二固定部512分别位于正对的两个外挡板57处。本实施例中，第一固定部511的径向外侧具有轴向开设的通槽513，第二固定部512的中间开设有通孔514，以在嵌件成型时对弹性件55的进行定位。
同时参考图7，弹性件55成环形并且沿轴向形成波动，即弹性件55整体不在一个平面上。弹性件55包括多个波谷551和波峰552。波谷551和波峰552彼此间隔连接。波谷551固定在绝缘架50中。波峰552用于与所述壳体100或与壳体100相对固定的部件抵接从而防止定子5的振动。在本实施例中，波峰552抵顶套筒2的连接部28，将定子5以压配合的方式压向下壳3。在本实施例中，弹性件55由一条状弹簧材料（例如弹簧钢等）弯折而成。优选地，弹性件55在其中一波谷551处断开并在断口处形成两固定端550。两固定端550以沿不同于该波谷551的延伸方向的方向弯折。在本实施例中，两固定端550自其所在的波谷处竖直向上延伸。可选地，固定端550也可自波谷沿径向向外弯折而成。固定端550及其所在的波谷551被固定在第一骨架51的第一固定部511中。固定端550的设置使得弹性件55能够稳固地固定在绝缘架50中。在可选的实施例中，弹性件55也可为无固定端的波形弹簧。
弹性件55的其他波谷551（除了固定在第一固定部511中的波谷551）被固定在第一骨架51的第二固定部512中。在本实施例中，弹性件55具有两对波谷551和波峰552。因此，在本实施例中，第一骨架51包括一个第一固定部511和一个第二固定部512中。弹性件55的波谷551和波峰552至少两对，以使得至少有两个波峰552能够抵顶套筒2的连接部28而避免作用力不均衡。同时参考图8和图9，本发明的另一实施例的弹性件55包括6对波谷551和波峰552。在两个实施例中，弹性件55的波谷551和波峰552对应绝缘架50的外挡板57均等设置。可选地，波谷551和波峰552成对且对称设置。设计者可根据实际情况选择弹性件55的波谷551和波峰552之间的相对尺寸以及对数。在本实施例中，弹性件55的波峰552抵顶在位于套筒2的连接部28处的肋条24处。
如图7所示，波峰552包括与波谷551倾斜连接的两斜段553和位于两斜段553之间的平段554。平段554位于波峰552在其最高位置处，并与连接部大致平行，从而能够更好贴合套筒2的连接部28，即以最大接触面积抵顶连接部28。平段554在轴向上高于绝缘架50的顶端。弹性件55通过波峰552的平段554抵顶套筒2的连接部28，将定子5压向机壳3，从而使得防止定子5因振动而松动甚至脱落。
以上所述仅为本发明较佳的具体实施方式，本发明的保护范围不限于以上列举的实施例，任何熟悉本技术领域的技术人员在本发明披露的技术范围内，可显而易见地得到的技术方案的简单变化或等效替换均落入本发明的保护范围内。

Claims (12)

  1. 一种用于泵的电机定子，固定在壳体（100）中，包括定子铁心（53）、固定在所述定子铁心（53）上的绝缘架（50）和绕制在所述绝缘架上（50）的绕组（54），其特征在于，还包括一端固定在所述绝缘架（50）上的弹性件（55），所述弹性件（55）的另一端被按压使得弹性件（55）向所述绝缘架（50）施加一轴向作用力而轴向定位所述定子。
  2. 根据权利要求1所述的定子，其特征在于，所述弹性件（55）成环形且沿轴向形成波动，包括多个彼此间隔连接的波谷（551）和波峰（552），所述波谷（551）沿周向延伸并固定在所述绝缘架（50）的一端，所述波峰（552）凸出所述绝缘架（50）的轴向端并被朝向所述绝缘架（50）沿轴向按压。
  3. 根据权利要求2所述的定子，其特征在于，所述弹性件（55）在其中一波谷处断开，并在断口处形成两固定端（550），所述两固定端（550）自该波谷处弯折延伸，所述两固定端（550）嵌入并固定在所述绝缘架（50）上。
  4. 根据权利要求3所述的定子，其特征在于，所述绝缘架（50）包括多个沿周向间隔布置的外挡板（57），在不同的外挡板处设有沿径向向外延伸的第一固定部（511）和至少一个第二固定部（512），所述第一固定部（511）和所述第二固定部（512）的数量之和对应于所述波谷（551）的数量。
  5. 根据权利要求4所述的定子，其特征在于，所述两固定端（550）及其所在的波谷固定在所述第一固定部（511）中。
  6. 根据权利要求2所述的定子，其特征在于，所述弹性件（55）包括至少两对所述波谷（551）和所述波峰（552）。
  7. 根据权利要求1所述的定子，其特征在于，所述弹性件以嵌件成型的方式一体固定在所述绝缘架上。
  8. 一种泵，包括壳体（100）、设置在所述壳体（100）内的电机（101）和叶轮（42），所述电机（101）包括定子（5）和转子（4），所述叶轮（42）和所述转子（4）连接，其特征在于，所述定子（5）为根据权利要求1至7中任意一项所述的定子。
  9. 根据权利要求8所述的泵，其特征在于，还包括相对所述壳体（100）固定的一套筒（2），所述套筒（2）包括外壁（22）和位于所述外壁（22）内侧的本体部（21），所述定子（5）套设于所述本体部（21）的外围，所述本体部（21）通过一连接部（28）与所述外壁（22）连接。
  10. 根据权利要求9所述的泵，其特征在于，所述定子（5）的所述弹性件（55）抵顶所述连接部（28）。
  11. 根据权利要求10所述的泵，其特征在于，所述连接部（28）朝向所述定子（5）的一侧设有肋条（24），所述弹性件（55）抵顶所述肋条（24）。
  12. 根据权利要求11所述的泵，其特征在于，所述肋条（24）有多个，所述多个肋条从所述连接部（28）的中央朝周缘呈辐射状延伸。
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