WO2023045004A1 - Impulseur de moteur - Google Patents

Impulseur de moteur Download PDF

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Publication number
WO2023045004A1
WO2023045004A1 PCT/CN2021/125172 CN2021125172W WO2023045004A1 WO 2023045004 A1 WO2023045004 A1 WO 2023045004A1 CN 2021125172 W CN2021125172 W CN 2021125172W WO 2023045004 A1 WO2023045004 A1 WO 2023045004A1
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WO
WIPO (PCT)
Prior art keywords
plane
outlet
front cover
symmetry
fan impeller
Prior art date
Application number
PCT/CN2021/125172
Other languages
English (en)
Chinese (zh)
Inventor
崔可
王韬
郑国丽
周茜茜
何维林
Original Assignee
中车株洲电机有限公司
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 中车株洲电机有限公司 filed Critical 中车株洲电机有限公司
Publication of WO2023045004A1 publication Critical patent/WO2023045004A1/fr

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    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • 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
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
    • 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
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft

Definitions

  • the invention relates to the technical field of motors, in particular to a motor fan impeller.
  • Self-ventilated double-rotating motors usually use a self-ventilating fan that rotates coaxially with the motor to drive the air flow in the frame to enhance the convective heat dissipation effect between the air in the frame and the stator and rotor of the motor, and improve the overall cooling efficiency of the motor.
  • Self-ventilating fans usually have the airflow characteristics of axial air inlet and radial air outlet, mainly relying on the work of fan blades and centrifugal force to achieve the purpose of boosting air and driving air flow, so this kind of fan is a centrifugal fan.
  • a type of fan is mainly relying on the work of fan blades and centrifugal force to achieve the purpose of boosting air and driving air flow.
  • the installation angle of the self-ventilating double-rotation motor centrifugal fan blade is zero, which is to ensure that the ventilation effect of the fan is exactly the same as the motor rotates forward and reverse. Due to the installation angle of zero, the fan blades have a significantly weaker pressurization capacity than a one-way rotating centrifugal fan.
  • the radial arrangement of the fan blades makes the shape of the end surface of the fan flow channel have the obvious characteristics of narrow air inlet and wide air outlet as shown in Figure 1, and the gas flow channel gradually widens from the inlet to the outlet at a constant speed , This also causes the wall adhesion between the gas and the blades to gradually deteriorate with the airflow movement, and a relatively obvious airflow separation and outlet recirculation area will generally be formed near the outlet, causing the outlet to be blocked and affecting the fan's flow efficiency.
  • the object of the present invention is to provide a motor fan impeller with high fan flow efficiency.
  • the present invention provides the following technical solutions:
  • a motor fan impeller comprising a front cover plate and a rear cover plate arranged in sequence along the axial direction, a hub is fixedly arranged between the front cover plate and the rear cover plate, and a plurality of Blades; the center of the front cover is provided with an air inlet, and an air outlet channel is formed between adjacent blades, so that the wind can enter in the axial direction through the air inlet, and then flow out radially through the air outlet channel ;
  • the blades sequentially include an inlet structure and an outlet structure
  • the inlet structure is a plane symmetric structure, and the symmetry plane is the plane where the rotation center line of the hub is located;
  • the outlet structure at least part of the circumferential end surface is a deformed surface, and along the airflow direction, the deformed surface gradually deviates from the corresponding plane of symmetry, wherein the outlet structure is the same as that of the inlet structure in the same blade.
  • the plane of symmetry corresponds.
  • two circumferential end surfaces of the outlet structure are respectively located on two sides of the corresponding plane of symmetry.
  • the two circumferential end faces of the outlet structure are plane-symmetric with respect to the corresponding plane of symmetry.
  • all the blade structures are identical and arranged evenly.
  • the deformation surface is parallel to the axial direction.
  • the distance between the two adjacent inlet structures in the circumferential direction of the air outlet channel gradually increases, and the partial distance between the two adjacent outlet structures in the circumferential direction gradually decreases.
  • the outlet structure includes two tail plates arranged in sequence along the circumferential direction, and the two tail plates are respectively arranged on both sides of the corresponding symmetrical plane, and the deformation surface is arranged on the The tail plate is far away from the circumferential end surface of the other tail plate; along the airflow direction, the two tail plates swing in directions gradually away from the corresponding plane of symmetry, so that the outlet structure forms a bifurcated structure .
  • the outlet structure is a solid plate-like structure.
  • the deformation surface gradually deviates from the corresponding plane of symmetry.
  • the outlet structure in a direction perpendicular to the front cover plate and away from the front cover plate, includes at least two sub-plates in turn; each of the sub-plates gradually moves away from the corresponding plane of symmetry along the airflow direction swing in the same direction, and the adjacent sub-plates in the outlet structure are respectively located on both sides of the corresponding symmetry plane; the deformation surface is provided on the circumferential end surface of the sub-plate away from the corresponding symmetry plane superior.
  • the motor fan impeller provided by the present invention includes a front cover and a rear cover arranged in sequence in the axial direction, a hub is fixedly arranged between the front cover and the rear cover, and a plurality of blades are fixed in turn on the hub along the circumferential direction.
  • An air inlet is arranged in the center of the front cover, and an air outlet channel is formed between adjacent blades, so that the wind can enter in the axial direction through the air inlet, and then flow out in the radial direction through the air outlet channel.
  • the blade comprises in turn an inlet structure and an outlet structure.
  • the inlet structure is a plane symmetrical structure, and the symmetrical plane is the plane where the rotation centerline of the hub is located.
  • the outlet structure at least part of the circumferential end surface is a deformed surface, and along the airflow direction, the deformed surface gradually deviates from the corresponding symmetry plane, wherein the outlet structure corresponds to the symmetry plane of the inlet structure in the same blade.
  • each deformed surface can slow down the circumferential expansion trend of the airflow channel, and can weaken the wall shedding of the airflow at the fan outlet to a certain extent Phenomenon and outlet backflow phenomenon, thereby improving the working ability of the fan and the convection heat dissipation efficiency in the motor frame, and improving the fan flow efficiency.
  • the inlet structure is a plane symmetrical structure, the impact on the bidirectional rotation capability of the impeller can be reduced.
  • Fig. 1 is a schematic diagram of the traditional fan backflow phenomenon in the prior art, X is the rotation direction of the fan, C is the forward airflow, and D is the reverse airflow;
  • Fig. 2 is a schematic diagram of the suppression of the backflow phenomenon by the bifurcated blades in the impeller in Embodiment 1 of the present invention, X is the rotation direction of the fan, and C is the forward airflow;
  • Fig. 3 is an axial view of the impeller in Embodiment 1 of the present invention, and the solid line with arrows indicates the air flow;
  • FIG. 4 is a radial cross-sectional view of the impeller in Embodiment 1 of the present invention, O is the rotation centerline of the hub and the fan, and the arrow on the dotted line indicates the direction perpendicular to the front cover and away from the front cover;
  • Fig. 5 is a structural diagram of blades in the impeller in Embodiment 1 of the present invention.
  • Fig. 6 is a partial structural diagram of the impeller in Embodiment 1 of the present invention.
  • Fig. 7 is a partial structural diagram of the impeller in the second embodiment of the present invention.
  • Fig. 8 is an axial view of the impeller in the second embodiment of the present invention.
  • Fig. 9 is a partial structural view of the impeller in Embodiment 3 of the present invention.
  • Fig. 10 is an axial view of the impeller in Embodiment 3 of the present invention.
  • Fig. 11 is a partial structural diagram of the impeller in Embodiment 4 of the present invention.
  • Fig. 12 is an axial view of the impeller in Embodiment 4 of the present invention.
  • Fig. 13 is a structural diagram of the blades of the impeller in Embodiment 5 of the present invention.
  • Outlet structure 2 deformation surface 21, tail plate 22, sub-plate 23, circumferential end surface 24 of the outlet structure;
  • Blade 3 air outlet channel 31, air inlet side 32, air outlet side 33;
  • Front cover 4 air inlet 41;
  • the core of the present invention is to provide a motor fan impeller with high fan flow efficiency.
  • the first specific embodiment of the motor fan impeller provided by the present invention is used in the field of cooling power components of bidirectional motors in electrical equipment, please refer to Figures 2 to 6, including a front cover 4 and a rear cover 6 arranged in sequence along the axial direction .
  • a wheel hub 5 is fixedly arranged between the front cover plate 4 and the rear cover plate 6, and the rear cover plate 6 and the wheel hub 5 are generally integrated.
  • a plurality of blades 3 are fixedly arranged in turn on the hub 5 along the circumferential direction, and the main function of the blades 3 is to perform work on the airflow to increase the total pressure of the airflow.
  • the front cover plate 4 and the rear cover plate 6 mainly play the role of guiding the flow and supporting the blades 3, and the center of the front cover plate 4 is provided with an air inlet 41 , and an air outlet channel 31 is formed between adjacent blades 3, so that the wind can enter in the axial direction through the air inlet 41 as shown in FIG.
  • the airflow direction Q refers to the direction of the airflow following its flow.
  • the blade 3 comprises an inlet structure 1 and an outlet structure 2 in sequence.
  • the inlet structure 1 is a plane symmetrical structure, and the symmetrical plane S is the plane where the rotation center line of the hub 5 is located.
  • the inlet structure 1 is a straight plate structure, and its two circumferential end surfaces are planes parallel to the symmetry plane S, and may also be other shapes with unequal thickness.
  • the outlet structure 2 At least part of the circumferential end surface is a deformed surface 21 , and along the airflow direction Q, the deformed surface 21 gradually deviates from the symmetry plane S corresponding to the inlet structure 1 in the same blade 3 .
  • both ends of the outlet structure 2 in the circumferential direction are circumferential end faces.
  • deformation surfaces 21 are provided on both circumferential end faces.
  • the outlet structure 2 extends from the middle of the blade 3 to the tail end of the blade 3 , the starting position of the outlet structure 2 can be set according to actual needs, and the tail end is the tail end of the blade 3 .
  • the outlet structure 2 , the inlet structure 1 and the symmetry plane S of the inlet structure 1 on the same blade 3 have a corresponding relationship.
  • the air flow enters from the air inlet 41, first flows in the axial direction, and gradually changes to flow in the radial direction. When passing through the blade 3, it first adheres to the circumferential direction of the inlet structure 1 of the blade 3.
  • each deformed surface 21 can slow down
  • the circumferential expansion trend of the airflow channel as shown in the deformation surface A in Figure 2, can slow down its expansion trend on the right side of the left airflow channel, and can weaken the wall shedding phenomenon and outlet backflow of the airflow at the fan outlet to a certain extent phenomenon, thereby improving the working ability of the fan and the convection heat dissipation efficiency in the motor frame.
  • the inlet structure 1 is a plane symmetrical structure, it can reduce the influence on the two-way rotation ability of the impeller.
  • the two circumferential end surfaces 24 of the outlet structure 2 are located on both sides of the corresponding symmetry plane S, which can improve the structural consistency of the two circumferential end surfaces 24 of the outlet structure 2 and improve the bidirectional rotation capability of the impeller. More preferably, as shown in FIG. 5 , the two circumferential end surfaces 24 of the outlet structure 2 are planarly symmetrical with respect to the symmetry plane S, so as to further ensure that the working performance of the impeller is exactly the same when it is forward and reverse.
  • the deformation surface 21 is parallel to the axial direction, more specifically, it is arranged on a plane parallel to the axial direction, which is convenient for processing.
  • the spacing between the two circumferentially adjacent inlet structures 1 of the air outlet channel 31 gradually increases, and the partial spacing between the circumferentially adjacent two outlet structures 2 Gradual reduction, so that along the airflow direction Q, the circumferential width of the air outlet channel 31 gradually expands and then tapers, which can further avoid the phenomenon of backflow.
  • the partial spacing between two adjacent outlet structures 2 in the circumferential direction can also be gradually increased, but the increase speed is slower than that between two adjacent outlet structures 2 of the air outlet channel 31 in the circumferential direction. The speed at which the spacing between the inlet structures 1 increases.
  • all blades 3 have identical structures and are evenly arranged, which can ensure the working capacity of the impeller and facilitate processing.
  • the outlet structure 2 includes two tail plates 22 sequentially arranged along the circumferential direction, and the two tail plates 22 are respectively arranged on both sides of the corresponding plane S of symmetry.
  • the tail plate 22 may be a straight plate of equal thickness, or may adopt a plate of unequal thickness or a non-straight plate structure.
  • each tail plate 22 its deformation surface 21 is arranged on the circumferential end surface of the tail plate 22 away from the other tail plate 22 in the same outlet structure 2, that is to say, in the outlet structure 2, each tail plate 22 is far away from the other tail plate 22.
  • the circumferential end surface of a tail plate 22 is the circumferential end surface 24 of the outlet structure 2 .
  • the entire circumferential end surface of the outlet structure 2 is the deformation surface 21 .
  • the two tailgates 22 swing in directions gradually away from the corresponding symmetry plane S, so that the outlet structure 2 forms a bifurcated structure. Due to the setting of the bifurcated structure, the outlet structure 2 can have a deformed surface. 21 simultaneously, reduce blade 3 weights.
  • the bifurcation angle between the two tail plates 22 ranges from 0° to 180°.
  • the inlet side 32 and the outlet side 33 are straight or non-linear. In the airflow direction Q, the inlet side 32 is specifically the starting side of the inlet structure 1 , and the outlet side 33 is the trailing side of the outlet structure 2 .
  • the angle ⁇ between the air inlet side 32 and the rotation center line O of the impeller ranges from 0° to 180°, and the angle between the air outlet side 33 and the rotation center line O ranges from 0° to 90°.
  • the impeller of the self-ventilating centrifugal fan of the double-rotating motor with circumferentially bifurcated blades provided in this embodiment, based on the setting of the outlet structure 2, can solve the problem of serious backflow at the outlet of the self-ventilating fan of the traditional double-rotating motor and relatively high secondary flow loss.
  • the symmetrical structure of the blade 3 it can meet the requirements of forward and reverse rotation.
  • the work ability of forward and reverse airflow is consistent Compared with the existing self-ventilating fan, the flow rate and efficiency are higher, and the aerodynamic performance is better.
  • the outlet structure 2 is not limited to be the bifurcated structure in the first embodiment.
  • the outlet structure 2 is a solid plate structure, which is convenient for processing.
  • the deformed surface 21 is not limited to be arranged parallel to the axial direction, and the entire circumferential end surface may not be provided as the deformed surface 21 .
  • the deformation surface 21 gradually deviates from the corresponding symmetry plane S.
  • the direction perpendicular to the front cover plate 4 is consistent everywhere on the airflow direction Q; In different positions, the direction perpendicular to the front cover 4 is specifically the direction perpendicular to the tangent plane of each point of the front cover 4 .
  • the deformed surface 21 of the outlet structure 2 a part of the surface of the circumferential end surface of the outlet structure 2 is the deformed surface 21, which is shown in FIG.
  • These two directions both have a gradual change trend, which can partially improve the backflow problem of the air outlet channel 31 .
  • the two circumferential end faces of the outlet structure 2 may not be plane-symmetrical with respect to the symmetry plane S.
  • the outlet structure 2 sequentially includes at least two sub-boards 23 .
  • Each sub-plate 23 swings along the airflow direction Q toward a direction gradually away from the corresponding symmetry plane S, and adjacent sub-plates 23 in the outlet structure 2 are located on both sides of the corresponding symmetry plane S, respectively.
  • the deformation surface 21 is provided on the circumferential end surface of the sub-plate 23 away from the symmetry plane S.
  • two sub-boards 23 are provided, and in other embodiments, three sub-boards 23 may also be provided or other numbers.
  • each sub-plate 23 can reduce the backflow phenomenon in one of the rotation directions of the impeller.
  • the deformation surface 21 may be provided on only one of the two circumferential end surfaces 24 of the outlet structure 2 .
  • the left circumferential end surface of the outlet structure 2 is a deformation surface 21, and the right circumferential end surface is a surface parallel to the corresponding symmetry plane S, not It has a gradual tendency and is not a deformed surface 21.

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

Abstract

Impulseur de moteur, comprenant une plaque de recouvrement avant (4) et une plaque de recouvrement arrière (6) disposées en séquence le long d'une direction axiale, un moyeu (5) étant disposé de manière fixe entre la plaque de recouvrement avant (4) et la plaque de recouvrement arrière (6), et une pluralité de pales (3) étant disposées de manière fixe sur le moyeu (5) en séquence le long d'une direction circonférentielle. Une entrée d'air (41) est disposée au centre de la plaque de recouvrement avant (4), et un canal de sortie d'air (31) est formé entre des pales adjacentes (3), de sorte que le vent peut entrer le long de la direction axiale par l'entrée d'air (41), puis s'écouler radialement au moyen du canal de sortie d'air (31). Dans une direction d'écoulement d'air, chaque pale (3) comprend séquentiellement une structure d'entrée (1) et une structure de sortie (2). La structure d'entrée (1) est une structure symétrique plane, et un plan symétrique (S) est un plan dans lequel la ligne centrale de rotation du moyeu (5) est située. Dans la structure de sortie (2), au moins une partie d'une surface d'extrémité circonférentielle est une surface de déformation (21), et le long de la direction d'écoulement d'air (Q), la surface de déformation (21) s'écarte progressivement du plan symétrique correspondant (S). La surface de déformation (21) étant disposée sur la structure de sortie (2), par comparaison avec les pales droites de l'état de la technique, la tendance d'expansion circonférentielle d'un canal d'écoulement d'air peut être atténuée et l'efficacité d'écoulement du ventilateur peut être augmentée.
PCT/CN2021/125172 2021-09-26 2021-10-21 Impulseur de moteur WO2023045004A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111128299.5A CN113685371A (zh) 2021-09-26 2021-09-26 一种电机风扇叶轮
CN202111128299.5 2021-09-26

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WO2023045004A1 true WO2023045004A1 (fr) 2023-03-30

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007040236A1 (fr) * 2005-10-06 2007-04-12 Mitsubishi Electric Corporation Turboventilateur et climatiseur
US20090269196A1 (en) * 2008-04-25 2009-10-29 Chia-Ming Hsu Fan and airflow guiding structure thereof
CN109322842A (zh) * 2018-11-26 2019-02-12 浙江理工大学 带前盖板叶片及槽口的无蜗壳离心通风机及工作方法
CN109779964A (zh) * 2019-04-02 2019-05-21 萨震压缩机（上海）有限公司 节能离心叶轮
CN209781249U (zh) * 2018-11-16 2019-12-13 依必安派特穆尔芬根有限两合公司 对角风扇
CN210509638U (zh) * 2019-08-02 2020-05-12 珠海格力电器股份有限公司 混流风机和空调器
CN113048096A (zh) * 2021-03-31 2021-06-29 太仓欣华盈电子有限公司 扇叶及风扇模组
CN216111447U (zh) * 2021-09-26 2022-03-22 中车株洲电机有限公司 一种电机风扇叶轮

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007040236A1 (fr) * 2005-10-06 2007-04-12 Mitsubishi Electric Corporation Turboventilateur et climatiseur
US20090269196A1 (en) * 2008-04-25 2009-10-29 Chia-Ming Hsu Fan and airflow guiding structure thereof
CN209781249U (zh) * 2018-11-16 2019-12-13 依必安派特穆尔芬根有限两合公司 对角风扇
CN109322842A (zh) * 2018-11-26 2019-02-12 浙江理工大学 带前盖板叶片及槽口的无蜗壳离心通风机及工作方法
CN109779964A (zh) * 2019-04-02 2019-05-21 萨震压缩机（上海）有限公司 节能离心叶轮
CN210509638U (zh) * 2019-08-02 2020-05-12 珠海格力电器股份有限公司 混流风机和空调器
CN113048096A (zh) * 2021-03-31 2021-06-29 太仓欣华盈电子有限公司 扇叶及风扇模组
CN216111447U (zh) * 2021-09-26 2022-03-22 中车株洲电机有限公司 一种电机风扇叶轮

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