CN113014054B - Integrated shell-less motor - Google Patents

Integrated shell-less motor Download PDF

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Publication number
CN113014054B
CN113014054B CN202110401338.8A CN202110401338A CN113014054B CN 113014054 B CN113014054 B CN 113014054B CN 202110401338 A CN202110401338 A CN 202110401338A CN 113014054 B CN113014054 B CN 113014054B
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China
Prior art keywords
end cover
stator
rotor
cantilever
integrated
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CN202110401338.8A
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CN113014054A (en
Inventor
张磊
张伟
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Supersonic Intelligent Technology Hangzhou Co ltd
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Supersonic Intelligent Technology Hangzhou Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • 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
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/10—Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing

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

Abstract

The invention discloses an integrated shell-less motor, which comprises: the cooling device comprises a first stator, a second stator, a first rotor, a second rotor, a motor shaft, a cooling fan, a first end cover, a second end cover and a middle end cover; a first air gap is arranged between the first stator and the first rotor; a second air gap is arranged between the second stator and the second rotor; the first end cover is provided with a first cantilever; the second end cover is provided with a second cantilever; the middle end cover is provided with a middle cantilever; the first cantilever is provided with a first air inlet channel; the second cantilever is provided with a second air inlet channel; the middle cantilever is provided with an air outlet channel; when the heat radiation fan rotates, one part of air flow is driven to enter the interior of the integrated shell-less motor from the first air inlet channel and pass through the first air gap to be discharged from the air outlet channel, and the other part of air flow is driven to enter the interior of the integrated shell-less motor from the second air inlet channel and pass through the second air gap to be discharged from the air outlet channel. The invention has the advantages of higher power and capability of realizing effective heat dissipation.

Description

Integrated shell-less motor
Technical Field
The invention relates to an integrated shell-free motor, in particular to an integrated shell-free motor suitable for the interior of a pipeline.
Background
An electric machine, commonly known as a "motor", refers to an electromagnetic device that converts or transmits electric energy according to the law of electromagnetic induction, and its main function is to generate driving torque as a power source for electrical appliances or various machines.
According to the different installation modes of the stator and the rotor, the motor is divided into a split type motor and an integrated type motor. The stator and the rotor of the split motor are respectively and independently installed, and the stator and the rotor of the integrated motor are firstly assembled into a whole and then installed.
For a motor installed and used in a pipeline, for example, a motor used in a scene of powder dough breaking and the like, the diameter of the motor is limited due to the limitation of the size of the pipeline, and the power is insufficient.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides an integrated shell-free motor which has higher power.
In order to achieve the above object, the present invention adopts the following technical solutions:
an integrated, shell-less electric machine comprising: the cooling device comprises a first stator, a second stator, a first rotor, a second rotor, a motor shaft, a cooling fan, a first end cover, a second end cover and a middle end cover;
the first stator includes: a first stator core and a first stator winding; the second stator includes: a second stator core and a second stator winding; the first rotor is provided with a first rotor shaft; the second rotor is provided with a second rotor shaft; the first rotor shaft and the second rotor shaft are hollow shafts; the heat radiation fan includes: a central hub and a fanning tray having a plurality of fan blades;
the first end cover is abutted against the top surface of the first stator iron core; the top surface of the middle end cover is abutted against the bottom surface of the first stator iron core; the bottom surface of the middle end cover is abutted against the top surface of the second stator core; the second end cover is abutted against the bottom surface of the second stator core; the first end cover, the first stator core, the middle end cover, the second stator core and the second end cover are fixed into a whole in a bolt connection mode;
the first rotor shaft, the central hub and the second rotor shaft are sleeved on the motor shaft and rotate coaxially with the motor shaft; a first air gap is arranged between the first stator and the first rotor; a second air gap is arranged between the second stator and the second rotor; the first end cover is provided with a first cantilever for mounting the integrated shell-less motor; the second end cover is provided with a second cantilever for mounting the integrated shell-less motor; the middle end cover is provided with a middle cantilever for mounting the integrated shell-less motor; the first cantilever is provided with a first air inlet channel; the second cantilever is provided with a second air inlet channel; the middle cantilever is provided with an air outlet channel;
when the heat radiation fan rotates, one part of air flow is driven to enter the interior of the integrated shell-less motor from the first air inlet channel and pass through the first air gap to be discharged from the air outlet channel, and the other part of air flow is driven to enter the interior of the integrated shell-less motor from the second air inlet channel and pass through the second air gap to be discharged from the air outlet channel.
Further, the first rotor shaft and the second rotor shaft are respectively abutted against both ends of the central hub.
Furthermore, the cooling fan is of a symmetrical structure; the fan blades are symmetrically arranged on two sides of the fan disc.
Further, the diameter of the heat radiation fan is larger than the diameters of the first rotor and the second rotor.
Further, in the axial direction of the motor shaft, the projection of the first air gap and the second air gap is located on the radiator fan.
Further, the motor shaft is mounted to the first and second end covers through bearings.
Furthermore, the first end cover, the first stator core, the middle end cover and the second stator core form through holes for bolts to penetrate through; the second end cap is formed with a threaded hole that is threadedly engaged with the bolt.
Further, the first end cover, the first stator core, the middle end cover, the second stator core and the second end cover are connected into a whole through three bolts.
Further, the first cantilever, the second cantilever and the middle cantilever are positioned on the same side of the motor shaft.
Further, the lengths of the first cantilever, the second cantilever and the middle cantilever are equal.
The invention has the advantage of higher power.
Removing the motor casing, so that the stator and the rotor can be enlarged to further improve power; the power is further increased by means of a double stator and rotor.
The first cantilever, the second cantilever and the middle cantilever are used for realizing the installation of the motor together, and the integrated shell-less motor with longer length is positioned in front, middle and rear sections, so that the installation reliability is high.
Inside and outside circulation that radiator fan driven heat dissipation circulation realized the motor through first cantilever, second cantilever and well cantilever, the inside of motor does not produce the circulation with the inside of pipeline, effectively avoids inside pollution motor such as dust in the pipeline, has realized the effective heat dissipation to motor in the pipeline.
Drawings
FIG. 1 is a front view of an integrated, case-less motor, with internal cooling airflow shown in phantom;
FIG. 2 is a top view of the integrated, case-less motor of FIG. 1;
FIG. 3 is a schematic view of a first rotor, a second rotor, a heat dissipation fan and a motor shaft of the integrated, case-less motor of FIG. 1;
FIG. 4 is a front view of the heat dissipation fan of the structure of FIG. 3;
fig. 5 is a plan view of the heat dissipation fan of fig. 4.
The integrated shell-less motor 100 comprises a first stator 10, a first stator core 11, a second stator 20, a second stator core 21, a first rotor 30, a first rotor shaft 31, a second rotor 40, a second rotor shaft 41, a motor shaft 50, a cooling fan 60, a central hub 61, a fan disc 62, fan blades 63, a first end cover 70, a first cantilever 71, a second end cover 80, a second cantilever 81, a middle end cover 90 and a middle cantilever 91.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
As shown in fig. 1 to 5, an integrated type case-less motor 100 includes: the motor includes a first stator 10, a second stator 20, a first rotor 30, a second rotor 40, a motor shaft 50, a heat dissipation fan 60, a first end cover 70, a second end cover 80, and a middle end cover 90.
Specifically, the first stator 10 includes: a first stator core 11 and a first stator winding. The outer side surface of the first stator core 11 is a cylindrical surface. A winding structure for winding is provided inside the first stator core 11. The first stator winding is wound onto the winding structure of the first stator core 11. The second stator 20 includes: a second stator core 21 and a second stator winding. The outer side surface of the second stator core 21 is a cylindrical surface. A winding structure for winding is provided inside the second stator core 21. The second stator winding is wound onto the winding structure of the second stator core 21. As a specific embodiment, the first stator 10 and the second stator 20 are the same stator.
The first rotor 30 is provided with a first rotor shaft 31. The second rotor 40 is provided with a second rotor shaft 41. Specifically, first rotor shaft 31 and second rotor shaft 41 are both hollow shafts.
The first end cap 70 abuts the top surface of the first stator core 11. The top surface of the center cap 90 abuts against the bottom surface of the first stator core 11. The bottom surface of the center cap 90 abuts against the top surface of the second stator core 21. The second end cover 80 abuts against the bottom surface of the second stator core 21. The first end cover 70, the first stator core 11, the middle end cover 90, the second stator core 21, and the second end cover 80 are fixed as a whole by means of bolt connection.
As a preferred embodiment, the first end cap 70, the first stator core 11, the middle end cap 90, and the second stator core 21 each form a through hole through which a bolt passes. The second end cap 80 is formed with a threaded hole that is threadedly coupled to the bolt. The first end cover 70, the first stator core 11, the middle end cover 90, the second stator core 21, and the second end cover 80 are connected as a whole by three bolts.
The heat radiation fan 60 includes: a central hub 61 and a fanning disc 62 provided with a plurality of fan blades 63.
The first rotor shaft 31, the center hub 61, and the second rotor shaft 41 are fitted to the motor shaft 50 to rotate coaxially with the motor shaft 50.
The first end cap 70 is provided with a first suspension arm 71 for mounting the integrated case-less motor 100. The second end cover 80 is provided with a second suspension arm 81 for mounting the integrated case-less motor 100. The center cap 90 is provided with a center suspension arm 91 for mounting the integrated case-less motor 100. The first arm 71 is provided with a first air intake passage. The second arm 81 is provided with a second intake passage. The middle cantilever 91 is provided with an air outlet channel. A first air gap is provided between the first stator 10 and the first rotor 30. A second air gap is provided between the second stator 20 and the second rotor 40. When the heat dissipation fan 60 rotates, a part of the air flow is driven to enter the interior of the integrated type case-less motor 100 from the first air inlet passage and to be discharged from the air outlet passage through the first air gap, while another part of the air flow is driven to enter the interior of the integrated type case-less motor 100 from the second air inlet passage and to be discharged from the air outlet passage through the second air gap.
In a preferred embodiment, the heat dissipation fan 60 has a symmetrical structure. The fan blades 63 are symmetrically arranged on both sides of the fan disc 62. Specifically, the first rotor 30 and the second rotor 40 are the same rotor. The symmetrical structure of the heat dissipation fan 60 can generate the same airflow on both sides.
As a preferred embodiment, the diameter of the heat radiating fan 60 is larger than the diameters of the first and second rotors 30 and 40. The projection of the first air gap and the second air gap in the direction along the axis of the motor shaft 50 is located on the radiator fan 60.
In a preferred embodiment, the first rotor shaft 31 and the second rotor shaft 41 are in contact with both ends of the central hub 61, respectively. The two first rotor shafts 31 and the second rotor shaft 41 are convenient to mount and position.
As a preferred embodiment, the motor shaft 50 is mounted to the first and second end caps 70 and 80 by bearings.
In a preferred embodiment, the first and second suspension arms 71, 81 and the middle suspension arm 91 are located on the same side of the motor shaft 50. The lengths of the first suspension arm 71, the second suspension arm 81 and the middle suspension arm 91 are equal. The first suspension arm 71, the second suspension arm 81 and the middle suspension arm 91 can be provided with the same connecting structure to realize the installation of the integrated shell-less motor 100.
In a preferred embodiment, the first rotor shaft 31, the central hub 61 and the second rotor shaft 41 are splined to the motor shaft 50 for synchronous rotation. As an alternative embodiment, the first rotor shaft, the central hub and the second rotor shaft may also be rotated synchronously with the motor shaft by way of flat position transmission.
The first stator core 11 and the second stator core 21 may be made of silicon steel sheets by laminating or may be made of an integral iron core.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalents or equivalent changes fall within the protection scope of the present invention.

Claims (10)

1. An integrated, shell-less motor, comprising: the cooling device comprises a first stator, a second stator, a first rotor, a second rotor, a motor shaft, a cooling fan, a first end cover, a second end cover and a middle end cover;
the first stator includes: a first stator core and a first stator winding; the second stator includes: a second stator core and a second stator winding; the first rotor is provided with a first rotor shaft; the second rotor is provided with a second rotor shaft; the first rotor shaft and the second rotor shaft are both hollow shafts; the heat dissipation fan includes: a central hub and a fanning tray having a plurality of fan blades;
the first end cover is abutted against the top surface of the first stator iron core; the top surface of the middle end cover is abutted against the bottom surface of the first stator iron core; the bottom surface of the middle end cover is abutted against the top surface of the second stator core; the second end cover is abutted against the bottom surface of the second stator core; the first end cover, the first stator core, the middle end cover, the second stator core and the second end cover are fixed into a whole in a bolt connection mode;
the first rotor shaft, the central hub and the second rotor shaft are sleeved on the motor shaft and rotate coaxially with the motor shaft; a first air gap is arranged between the first stator and the first rotor; a second air gap is arranged between the second stator and the second rotor; the first end cover is provided with a first cantilever for mounting the integrated shell-less motor; the second end cover is provided with a second cantilever for mounting the integrated shell-less motor; the middle end cover is provided with a middle suspension arm for mounting the integrated shell-less motor; the first cantilever is provided with a first air inlet channel; the second cantilever is provided with a second air inlet channel; the middle cantilever is provided with an air outlet channel;
when the cooling fan rotates, one part of air flow is driven to enter the interior of the integrated shell-less motor from the first air inlet channel and pass through the first air gap to be discharged from the air outlet channel, and the other part of air flow is driven to enter the interior of the integrated shell-less motor from the second air inlet channel and pass through the second air gap to be discharged from the air outlet channel.
2. The integrated, shellless machine of claim 1,
the first rotor shaft and the second rotor shaft are respectively abutted against two ends of the central hub.
3. The integrated, case-less motor of claim 1,
the heat dissipation fan is of a symmetrical structure; the fan blades are symmetrically arranged on two sides of the fan disc.
4. The integrated, case-less motor of claim 1,
the diameter of the heat dissipation fan is larger than the diameters of the first rotor and the second rotor.
5. The integrated, case-less motor of claim 1,
in the axial direction of the motor shaft, the projection of the first air gap and the second air gap is located on the heat dissipation fan.
6. The integrated, case-less motor of claim 1,
the motor shaft is mounted to the first end cover and the second end cover through bearings.
7. The integrated, case-less motor of claim 1,
the first end cover, the first stator core, the middle end cover and the second stator core form through holes for bolts to penetrate through; the second end cap is formed with a threaded hole in threaded connection with the bolt.
8. The integrated, case-less motor of claim 7,
the first end cover, the first stator core, the middle end cover, the second stator core and the second end cover are connected into a whole through three bolts.
9. The integrated, case-less motor of claim 1,
the first cantilever, the second cantilever and the middle cantilever are positioned on the same side of the motor shaft.
10. The integrated, case-less motor of claim 9,
the lengths of the first cantilever, the second cantilever and the middle cantilever are equal.
CN202110401338.8A 2021-04-14 2021-04-14 Integrated shell-less motor Active CN113014054B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110401338.8A CN113014054B (en) 2021-04-14 2021-04-14 Integrated shell-less motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110401338.8A CN113014054B (en) 2021-04-14 2021-04-14 Integrated shell-less motor

Publications (2)

Publication Number Publication Date
CN113014054A CN113014054A (en) 2021-06-22
CN113014054B true CN113014054B (en) 2022-07-08

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Application Number Title Priority Date Filing Date
CN202110401338.8A Active CN113014054B (en) 2021-04-14 2021-04-14 Integrated shell-less motor

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CN (1) CN113014054B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006044963B3 (en) * 2006-09-22 2008-06-19 Siemens Ag Stator for an electric machine with liquid cooling
CN204741363U (en) * 2014-04-08 2015-11-04 西门子公司 A bearing end plate and no casing motor for having casing motor
CN111431344A (en) * 2020-01-20 2020-07-17 卧龙电气(上海)中央研究院有限公司 Inorganic shell air-cooled permanent magnet motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006044963B3 (en) * 2006-09-22 2008-06-19 Siemens Ag Stator for an electric machine with liquid cooling
CN204741363U (en) * 2014-04-08 2015-11-04 西门子公司 A bearing end plate and no casing motor for having casing motor
CN111431344A (en) * 2020-01-20 2020-07-17 卧龙电气(上海)中央研究院有限公司 Inorganic shell air-cooled permanent magnet motor

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