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WO2023004840A1 - Moteur de dissipation de chaleur à vitesse de rotation constante pour outil électrique - Google Patents

Moteur de dissipation de chaleur à vitesse de rotation constante pour outil électrique Download PDF

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Publication number
WO2023004840A1
WO2023004840A1 PCT/CN2021/110223 CN2021110223W WO2023004840A1 WO 2023004840 A1 WO2023004840 A1 WO 2023004840A1 CN 2021110223 W CN2021110223 W CN 2021110223W WO 2023004840 A1 WO2023004840 A1 WO 2023004840A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat dissipation
rotor
motor
motor body
stator
Prior art date
Application number
PCT/CN2021/110223
Other languages
English (en)
Chinese (zh)
Inventor
侯亮
Original Assignee
扬州仁智信息科技有限公司
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 扬州仁智信息科技有限公司 filed Critical 扬州仁智信息科技有限公司
Publication of WO2023004840A1 publication Critical patent/WO2023004840A1/fr

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    • 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 utility model relates to the technical field of electric tools, in particular to a heat dissipation motor with constant speed for electric tools.
  • An electric tool is a mechanized tool, which is powered by a motor or an electromagnet, and drives the working head through a transmission mechanism to perform operations. It is usually made into a hand-held and movable type. It can improve production efficiency several times to dozens of times, and electric tools have been widely used in various fields of the national economy, and have entered home use.
  • the internal heat dissipation fan rotates with the rotation of the internal motor rotor, resulting in a higher rotation speed of the motor when idling and good heat dissipation effect.
  • the cooling effect of the fan becomes worse, and the cooling fan cannot rotate at a constant speed, resulting in reduced practicability.
  • the utility model provides a constant-speed heat-dissipating motor for electric tools to solve the defects and problems raised in the above-mentioned background technology.
  • the heat-dissipating fan can be used when the motor body is under load.
  • the second rotor the original number of rotations is maintained, and the internal cooling fan is continuously rotated at a constant number of rotations to dissipate heat, avoiding the deterioration of the heat dissipation effect caused by the decrease in the number of rotations of the motor due to the load, and effectively improving the heat dissipation effect .
  • a constant speed heat dissipation motor for electric tools including a motor body, the transmission end of the motor body is fixedly connected with a transmission shaft, and the middle part of the motor body is fixedly installed with a heat dissipation motor.
  • the upper end of the motor body is fixedly installed with a top cover, the upper end of the top cover is fixedly installed with a cooling net, the lower end inside the motor body is movably installed with a first rotor, and the upper end of the first rotor is fixedly installed
  • There are bearings the upper end inside the motor body is fixedly installed with a second stator, the inside of the second stator is movably installed with a second rotor, and the lower end of the second rotor is fixedly installed with a drive shaft, and the drive shaft
  • the outer end of the middle part is fixedly installed with a permanent magnet
  • the upper end of the second rotor is fixedly installed with a drive shaft two
  • the middle part of the drive shaft two is fixedly equipped with an anti-deflection wheel
  • the upper end of the drive shaft two is fixedly installed with a first
  • a connecting shaft is fixedly mounted on the lower end of the drive shaft one, a second heat dissipation fan is fixedly mounted
  • the second rotor is of the same structure as the first rotor
  • the first stator is of the same structure as the second stator
  • the first rotor and the second rotor maintain the same rotational torque
  • the force load on the first rotor the second rotor maintains the original rotation speed for rotation.
  • the permanent magnet is fixed around the outer end of the middle part of the drive shaft, the first cooling fan is located inside the top cover, and the permanent magnet is driven by the magnetic force when the second stator is energized to generate a magnetic field
  • the axis rotates.
  • the lower end of the connecting shaft is fixedly connected with a bearing
  • the second cooling fan is located inside the cooling grid
  • the connecting shaft and the first rotor can rotate coaxially and at different speeds by installing the bearing.
  • the second cooling fan has the same structure as the first cooling fan, the first rotor and the second rotor rotate coaxially, and the first rotor and the second rotor can be rotated in the middle of the motor body by installing the second cooling fan.
  • the first stator performs heat dissipation.
  • the connecting shaft is movably connected to the first rotor through a bearing, and the heat dissipation grid and the heat dissipation net are in a communication structure, and communicate with the heat dissipation net through the heat dissipation grid, so that during heat dissipation, the internal hot air flow can be
  • the rapid flow inside the motor body has achieved the effect of rapid cooling.
  • the utility model provides a constant speed cooling motor for electric tools, which has the following beneficial effects:
  • the power tool uses a constant speed heat dissipation motor, which uses internal biaxial transmission, so that when the motor body is under load, the heat dissipation fan can maintain the original rotation speed driven by the second rotor, and the internal heat dissipation fan can be rotated at a constant speed. Continuous rotation for heat dissipation avoids the deterioration of the heat dissipation effect caused by the decrease in the number of revolutions of the motor due to the load, and effectively improves the heat dissipation effect;
  • the power tool uses a constant-speed heat-dissipating motor, and the shaft ends are connected through bearings, so that the motor transmission rotor and the heat-dissipating rotor rotate separately, so that the transmission rotor saves part of the rotational torque that drives the heat-dissipating fan, reducing the output power of the motor, effectively Improve the energy-saving performance of the motor;
  • the electric tool uses a constant speed heat dissipation motor.
  • the second heat dissipation fan By installing the second heat dissipation fan in the middle of the motor body, it can dissipate heat between the first rotor and the first stator, and at the same time increase the flow speed of the air inside the motor body. Further improved heat dissipation performance.
  • Fig. 1 is the three-dimensional structure schematic diagram one of the utility model
  • Fig. 2 is the three-dimensional structure schematic diagram two of the utility model
  • Fig. 3 is a schematic diagram of the three-dimensional structure of the second stator of the utility model
  • Fig. 4 is a schematic diagram of the three-dimensional structure of the second rotor of the present invention.
  • a constant speed heat dissipation motor for electric tools including a motor body 1, the transmission end of the motor body 1 is fixedly connected with a transmission shaft 2, and the middle part of the motor body 1 is fixed A heat dissipation grid 3 is installed, a top cover 4 is fixedly installed on the upper end of the motor body 1, a heat dissipation net 5 is fixedly installed on the upper end of the top cover 4, and a first rotor 6 is movably installed on the lower end of the inside of the motor body 1.
  • a bearing 7 is fixedly installed on the upper end, a second stator 8 is fixedly installed on the upper end of the motor body 1, a second rotor 9 is installed movably inside the second stator 8, and a drive shaft 11 is fixedly installed on the lower end of the second rotor 9.
  • the outer end of the middle part of the shaft one 11 is fixedly installed with a permanent magnet 10, the upper end of the second rotor 9 is fixedly installed with a drive shaft two 12, and the middle part of the drive shaft two 12 is fixedly installed with an anti-deflection wheel 13, and the upper end of the drive shaft two 12 is fixedly installed
  • the second rotor 9 has the same structure as the first rotor 6, and the first stator 17 has the same structure as the second stator 8.
  • the motor body 1 is powered on, and the first stator 17 inside the motor body 1 is connected to the The second stator 8 is energized to generate a magnetic field, and the inner first rotor 6 and the permanent magnet 10 at the outer end of the second rotor 9 generate a rotational torque to rotate under the action of magnetic force, and the second rotor 9 drives the first cooling fan 14 and the second rotor while rotating.
  • the two heat dissipation fans 16 rotate in the same direction.
  • the first rotor 6 When the first rotor 6 is idling, the first rotor 6 and the second rotor 9 to maintain the same rotational torque, when the first rotor 6 is subjected to a force load, the second rotor 9 rotates at the original speed, and continuously drives the first heat dissipation fan 14 and the second heat dissipation fan 16 to dissipate heat.
  • the permanent magnet 10 is fixed around the outer end of the middle part of the drive shaft 11, and the first cooling fan 14 is located inside the top cover 4.
  • the permanent magnet 10 is energized to generate a magnetic field in the second stator 8, the permanent magnet 10 is subjected to a magnetic force. The effect drives the drive shaft one 11 to rotate.
  • the lower end of the connecting shaft 15 is fixedly connected with the bearing 7, and the second heat dissipation fan 16 is positioned at the inside of the heat dissipation grid 3, and the connecting shaft 15 and the first rotor 6 can be rotated coaxially and at different speeds by installing the bearing 7.
  • the second cooling fan 16 has the same structure as the first cooling fan 14, and the first rotor 6 and the second rotor 9 rotate coaxially.
  • the rotor 6 and the first stator 17 perform heat dissipation.
  • the connecting shaft 15 is movably connected with the first rotor 6 through the bearing 7, and the heat dissipation grid 3 and the heat dissipation net 5 are in a communication structure, and are communicated with the heat dissipation net 5 through the heat dissipation grid 3, so that the internal heat The air flow can flow quickly inside the motor body 1 to achieve the effect of rapid cooling.
  • the first rotor 6 When the first rotor 6 is idling, the first rotor 6 and the second rotor 9 maintain the same rotational torque. When the first rotor 6 is stressed, the second rotor 9 maintains the original rotation speed. Rotate to continuously drive the first heat dissipation fan 14 and the second heat dissipation fan 16 to dissipate heat.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

Moteur de dissipation de chaleur à vitesse de rotation constante pour un outil électrique, comprenant un corps de moteur (1). Un arbre de transmission (2) est relié de manière fixe à une extrémité de transmission du corps de moteur ; une grille de dissipation de chaleur (3) est montée de manière fixe au milieu du corps de moteur (1) ; un capot supérieur (4) est monté de manière fixe à l'extrémité supérieure du corps de moteur (1) ; un filet de dissipation de chaleur (5) est monté de manière fixe au niveau de l'extrémité supérieure du capot supérieur (4) ; un premier rotor (6) est monté de manière mobile au niveau de l'extrémité inférieure de l'intérieur du corps de moteur (1) ; un palier (7) est monté de manière fixe au niveau de l'extrémité supérieure du premier rotor (6) ; et un second stator (8) est monté de manière fixe au niveau de l'extrémité supérieure de l'intérieur du corps de moteur. Selon le moteur de dissipation de chaleur à vitesse de rotation constante pour l'outil électrique, une transmission interne à deux arbres est utilisée, de telle sorte que lorsque le corps de moteur est chargé, un ventilateur de dissipation de chaleur peut être entraîné par le second rotor pour tourner selon un nombre de rotations d'origine, un ventilateur de dissipation de chaleur interne tourne en continu selon un nombre de rotations constant à des fins de dissipation de chaleur, et la situation selon laquelle un effet de dissipation de chaleur devient médiocre à la suite de la réduction du nombre de rotations du moteur due à la charge est évitée ; et l'effet de dissipation de chaleur est efficacement amélioré.
PCT/CN2021/110223 2021-07-29 2021-08-03 Moteur de dissipation de chaleur à vitesse de rotation constante pour outil électrique WO2023004840A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202121743138.2 2021-07-29
CN202121743138.2U CN215419958U (zh) 2021-07-29 2021-07-29 一种电动工具用恒转速散热电机

Publications (1)

Publication Number Publication Date
WO2023004840A1 true WO2023004840A1 (fr) 2023-02-02

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PCT/CN2021/110223 WO2023004840A1 (fr) 2021-07-29 2021-08-03 Moteur de dissipation de chaleur à vitesse de rotation constante pour outil électrique

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CN (1) CN215419958U (fr)
WO (1) WO2023004840A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116937891A (zh) * 2023-07-28 2023-10-24 永州市顺合智能科技有限公司 一种无刷电机的散热结构及其无刷电机
CN118149082A (zh) * 2024-05-11 2024-06-07 常州亨博电气设备制造有限公司 一种基于快速散热的起重机自动变速箱

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008028996A1 (fr) * 2006-09-07 2008-03-13 Abb Oy Système de refroidissement d'appareil électrique
CN107046347A (zh) * 2017-03-06 2017-08-15 宁波诺丁汉大学 带有散热装置的电机
CN206894461U (zh) * 2017-03-26 2018-01-16 广州微型电机厂有限公司 一种新型安全可靠的异步电机设备
CN109995187A (zh) * 2019-04-16 2019-07-09 潍坊科技学院 一种数控钢筋弯箍机电机
CN210958048U (zh) * 2019-12-26 2020-07-07 江西迈得机电配件有限公司 一种无刷电机的散热组件

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008028996A1 (fr) * 2006-09-07 2008-03-13 Abb Oy Système de refroidissement d'appareil électrique
CN107046347A (zh) * 2017-03-06 2017-08-15 宁波诺丁汉大学 带有散热装置的电机
CN206894461U (zh) * 2017-03-26 2018-01-16 广州微型电机厂有限公司 一种新型安全可靠的异步电机设备
CN109995187A (zh) * 2019-04-16 2019-07-09 潍坊科技学院 一种数控钢筋弯箍机电机
CN210958048U (zh) * 2019-12-26 2020-07-07 江西迈得机电配件有限公司 一种无刷电机的散热组件

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116937891A (zh) * 2023-07-28 2023-10-24 永州市顺合智能科技有限公司 一种无刷电机的散热结构及其无刷电机
CN118149082A (zh) * 2024-05-11 2024-06-07 常州亨博电气设备制造有限公司 一种基于快速散热的起重机自动变速箱

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