CN219477746U - Self-ventilation cooling type ultra-high-speed motor - Google Patents

Self-ventilation cooling type ultra-high-speed motor Download PDF

Info

Publication number
CN219477746U
CN219477746U CN202320181846.4U CN202320181846U CN219477746U CN 219477746 U CN219477746 U CN 219477746U CN 202320181846 U CN202320181846 U CN 202320181846U CN 219477746 U CN219477746 U CN 219477746U
Authority
CN
China
Prior art keywords
bearing
end cover
rear end
rotor
self
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.)
Active
Application number
CN202320181846.4U
Other languages
Chinese (zh)
Inventor
张勇
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN202320181846.4U priority Critical patent/CN219477746U/en
Application granted granted Critical
Publication of CN219477746U publication Critical patent/CN219477746U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Landscapes

  • Motor Or Generator Cooling System (AREA)

Abstract

The utility model discloses a self-ventilation cooling type super-high-speed motor, which is mainly applied to occasions needing to use a super-high-speed rotating motor, such as a high-speed generator, an electric spindle, a high-speed air compressor and the like, and aims to solve the problem of integrated heat dissipation of the super-high-speed motor. The motor comprises a stator core, windings, a rotor, fan blades, a dustproof filter screen, a front end cover with a front end vent hole, a rear end cover with a rear end vent hole, a shaft and other auxiliary components required by the rotation of the motor; the utility model has the uniqueness that the gap between the rotor and the stator core is used as an air channel, the rotor drives the coaxial fan blade at high rotation speed to form strong air flow, air enters from the rear end vent hole and is discharged from the front end vent hole through the air channel, and a high-speed air flow loop is formed to effectively cool the stator rotor and the bearing of the motor.

Description

Self-ventilation cooling type ultra-high-speed motor
Technical Field
The utility model belongs to the field of motors, and particularly relates to a self-ventilation cooling type super-high-speed motor which is applied to occasions needing to use a super-high-speed rotating motor, including but not limited to a high-speed generator, an electric spindle, a high-speed air compressor and the like.
Background
Ultra-high speed motors generally refer to motors having rotational speeds in excess of 10,000rpm, while those used in certain applications have rotational speeds in excess of 100,000rpm, and even higher. The ultra-high speed motor has the advantages of high rotating speed, small volume, high power density, small vibration and the like, and the application range of the ultra-high speed motor is wider and wider.
The heat dissipation problem of the ultra-high-speed motor is a key factor of stable operation of the motor, and the heat dissipation problem not only relates to the electric performance of a motor winding, but also relates to the stable exertion of the magnetic performance of a magnetic material, and further relates to other failure modes caused by the thermal deformation of mechanical parts. Therefore, the heat dissipation of the ultra-high-speed motor is finished, the stable and effective operation of the ultra-high-speed motor is ensured, and the ultra-high-speed motor has extremely important value.
Disclosure of Invention
Aiming at the heat dissipation problem of the super-high-speed motor, the utility model provides a self-ventilation cooling super-high-speed motor.
The utility model adopts the following technical scheme:
a self-ventilation cooling type ultra-high speed motor comprises a motor shell, wherein one end of the motor shell is connected with a front end cover, a front bearing is arranged on the inner wall of the front end cover, the other end of the motor shell is connected with a rear end cover, and a rear bearing is arranged on the inner wall of the rear end cover; the outer wall of the stator core is connected with the inner wall of the motor shell, the inner wall of the stator core is sleeved outside the rotor, the rotor sleeve is fixed in the middle of the shaft, and the two ends of the shaft are respectively connected with the front bearing and the rear bearing; a plurality of front end ventilation holes are formed in the front end cover, a plurality of rear end ventilation holes are formed in the rear end cover, an air channel is formed between the rotor and the stator core, two ends, close to the front bearing and the rear bearing, of the air channel are respectively an air outlet and an air inlet, the front end ventilation holes and the rear end ventilation holes are respectively communicated with the air outlet and the air inlet of the air channel, and the fan blade is sleeved and fixed on the part, located on the air inlet, of the shaft.
The inner side of the front end cover is provided with a front bearing accommodating cavity, and the front bearing is fixed in the front bearing accommodating cavity; the inner side of the rear end cover is provided with a rear bearing accommodating cavity, and the rear bearing is fixed in the rear bearing accommodating cavity.
The inner wall of the stator core is provided with the winding groove, the winding is wound in the winding groove, and the inner ring of one end of the winding, facing the rear bearing, forms a funnel-shaped air inlet.
As described above, the radius of the inner ring of the air inlet is gradually reduced from the rear bearing to the front bearing, and the range of the outer radius of the fan blade is set between the minimum value and the maximum value of the radius of the inner ring of the air inlet.
The axial distance range between the fan blade and the rotor is set to be between the radius and the diameter of the fan blade as described above.
The inner side of the rear end ventilation hole is provided with a dustproof filter screen.
The front end vent hole is arranged on the side surface of the circular column of the front end cover, and the front end vent hole is positioned between the front bearing and the joint of the motor shell and the front end cover; the rear end vent is located at a portion of the rear end cap end face surrounding the rear bearing.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model takes the gap between the rotor and the stator core as an air channel, the rotor drives the coaxial fan blade at high rotation speed to form strong air flow, air enters from the rear end vent hole of the rear end cover and then passes through the air channel and finally is discharged from the front end vent hole of the front end cover, so that a high-speed air flow loop is formed to effectively cool the stator core, the winding and the bearing.
Drawings
FIG. 1 is a cross-sectional view of the structure of the present utility model;
FIG. 2 is an exploded view of the present utility model;
FIG. 3 is a front view of the dust screen connected to the rear end cap;
in the figure, 1-axis; 2-front bearings; 3-front end cap; 4-winding; 5-stator core; 6-rotor; 7-a motor housing; 8-fan blades; 9-rear bearings; 10-a dustproof filter screen; 11-rear end cap.
Detailed Description
In order to facilitate the understanding and practice of the utility model, by those of ordinary skill in the art, the utility model will be described in further detail below with reference to the accompanying drawings, wherein the examples of embodiments described herein are for the purpose of illustration and explanation only and are not intended to be limiting of the utility model.
Example 1
The utility model provides a self-ventilation cooling type super-high-speed motor, which comprises a motor shell 7, wherein one end of the motor shell 7 is connected with a front end cover 3, the inner wall of the front end cover 3 is provided with a front bearing 2, the other end of the motor shell 7 is connected with a rear end cover 11, and the inner wall of the rear end cover 11 is provided with a rear bearing 9; the outer wall of stator core 5 is connected with the inner wall of motor housing 7, and rotor 6 is outside to the inner wall cover of stator core 5, thereby leaves the clearance between the outer wall of rotor 6 and the inner wall of stator core 5 and forms the wind channel, and rotor 6 cover is fixed in the middle part of axle 1, and front bearing 2 and rear bearing 9 are connected respectively at axle 1 both ends.
The front end cover 3 is provided with a plurality of front end ventilation holes for heat dissipation air to flow in and out. In this embodiment, the front end vent is provided on the side of the circular column of the front end cover 3, and the front end vent is located between the front bearing 2 and the junction of the motor housing 7 and the front end cover 3. 7 front end vent holes with the diameter of 5mm are uniformly formed in the side surface of the circular column of the front end cover 3 along the circumferential direction;
the rear end cover 11 is provided with a plurality of rear end ventilation holes for heat dissipation air to flow in and out. In this embodiment, the rear end ventilation holes are located at the part around the rear bearing 9 on the end face of the rear end cover 11, and 8 rear end ventilation holes with a diameter of 5mm are uniformly formed on the end face of the rear end cover 11.
The air duct is close to the front bearing 2 and the two ends of the rear bearing 9 are respectively provided with an air outlet and an air inlet, the front end ventilation hole and the rear end ventilation hole are respectively communicated with the air outlet and the air inlet of the air duct, and the fan blade 8 is sleeved and fixed on the part of the shaft 1 located at the air inlet.
The stator core 5 is formed by laminating or bonding silicon steel sheets. The inner wall of the stator core 5 is provided with a winding groove, the winding 4 is wound in the winding groove, and a funnel-shaped air inlet is formed in the inner ring of one end of the winding 4 facing the rear bearing 9. The radius of the inner ring of the air inlet is gradually reduced from the rear bearing 9 to the front bearing 2, and the outer radius range of the fan blade 8 is set between the minimum value and the maximum value of the radius of the inner ring of the air inlet.
The rotor 6 rotates at a high rotating speed to drive the shaft 1 to rotate, so that the coaxial fan blade 8 is driven to rotate to form strong air flow, air enters from the rear end vent hole and then sequentially passes through the air channel between the fan blade 8, the rotor 6 and the stator core 5, and finally is discharged from the front end vent hole, so that a high-speed air flow loop is formed, and the stator core 5, the winding 4, the rotor 6, the front bearing 2 and the rear bearing 9 generate heat to form effective cooling.
Further, a front bearing accommodating cavity is formed in the inner side of the front end cover 3, the front bearing 2 is fixed in the front bearing accommodating cavity, as shown in fig. 1, the outer ring of the front bearing 2 and the front bearing accommodating cavity are connected in a sliding mode, namely, the inner ring of the front bearing 2 and the shaft 1 are fixedly connected through sliding installation and glue adding, and the sliding mode is also adopted for glue adding. The front end cover 3 is connected with the inner wall of the motor housing 7 through the spigot in an interference fit manner, the axial length of the front bearing accommodating cavity is smaller than that of the front end cover 3, and the diameter of the outer wall of the front bearing accommodating cavity is smaller than that of the inner wall of the front end cover 3, so that the front end vent hole cannot be blocked to cause ventilation failure.
The inner side of the rear end cover 11 is provided with a rear bearing accommodating cavity, the rear bearing 9 is fixed in the rear bearing accommodating cavity, as shown in fig. 1, the connection mode of the outer ring of the rear bearing 9 and the rear bearing accommodating cavity is sliding glue adding, and the connection mode of the inner ring of the rear bearing 9 and the shaft 1 is sliding glue adding. The rear end cover 11 is connected with the inner wall of the motor housing 7 through the spigot in an interference fit manner, and the diameter of the outer wall of the rear bearing accommodating cavity is smaller than that of the inner wall of the rear end cover 11, so that a plurality of rear end ventilation holes can be formed in the rear end cover 11 to guide air into the stator core 5, the winding 4, the rotor 6, the rear bearing 9 and the front bearing 2 to cool.
Preferably, the fan blade 8 and the rotor 6 rotate coaxially and synchronously, and the axial distance between the fan blade 8 and the rotor 6 is set between the radius and the diameter of the fan blade 8. In this embodiment, the radius of the fan blade 8 is 13.4mm, and the axial distance between the fan blade 8 and the rotor 6 is 17mm.
Preferably, the inner side of the rear end ventilation hole is provided with a dustproof filter screen 10, the dustproof filter screen 10 is a plastic pore filter screen (aperture is 0.1-0.7 mm), the screen surface of the dustproof filter screen 10 is in close contact connection with the inner plane of the rear end cover 11, and the dustproof filter screen 10 can be replaced or cleaned and maintained according to the service condition of the motor. An elevation view of the dust screen 10 coupled to the rear end cap 11 is shown in fig. 3.
The present utility model is not limited to the above-described embodiments, which are merely preferred embodiments of the present utility model and are not intended to limit the concept of the present utility model, and the embodiments of the above-described embodiments may be further combined or replaced, and various changes and modifications of the technical solution of the present utility model will be within the scope of the present utility model by those skilled in the art.

Claims (7)

1. The self-ventilation cooling type ultra-high-speed motor comprises a motor shell (7), and is characterized in that one end of the motor shell (7) is connected with a front end cover (3), a front bearing (2) is arranged on the inner wall of the front end cover (3), the other end of the motor shell (7) is connected with a rear end cover (11), and a rear bearing (9) is arranged on the inner wall of the rear end cover (11); the outer wall of the stator core (5) is connected with the inner wall of the motor shell (7), the inner wall of the stator core (5) is sleeved outside the rotor (6), the rotor (6) is sleeved and fixed in the middle of the shaft (1), and the two ends of the shaft (1) are respectively connected with the front bearing (2) and the rear bearing (9); a plurality of front end ventilation holes are formed in the front end cover (3), a plurality of rear end ventilation holes are formed in the rear end cover (11), an air channel is formed between the rotor (6) and the stator core (5), two ends, close to the front bearing (2) and the rear bearing (9), of the air channel are respectively an air outlet and an air inlet, the front end ventilation holes and the rear end ventilation holes are respectively communicated with the air outlet and the air inlet of the air channel, and the fan blade (8) is sleeved and fixed on the part, located at the air inlet, of the shaft (1).
2. The self-ventilation cooling type ultra-high-speed motor according to claim 1, wherein a front bearing accommodating cavity is formed inside the front end cover (3), and the front bearing (2) is fixed in the front bearing accommodating cavity; the inner side of the rear end cover (11) is provided with a rear bearing accommodating cavity, and the rear bearing (9) is fixed in the rear bearing accommodating cavity.
3. The self-ventilation cooling type super-high-speed motor according to claim 2, wherein a winding groove is formed in the inner wall of the stator core (5), the winding (4) is wound in the winding groove, and a funnel-shaped air inlet is formed in the inner ring of the winding (4) facing one end of the rear bearing (9).
4. A self-ventilated cooled ultra-high speed motor according to claim 3, wherein the radius of the inner ring of the air inlet is gradually reduced from the rear bearing (9) to the front bearing (2), and the outer radius range of the fan blade (8) is set between the minimum value and the maximum value of the radius of the inner ring of the air inlet.
5. A self-ventilating cooled ultra-high speed motor as claimed in claim 4, wherein the axial distance between the blade (8) and the rotor (6) is set between the radius and the diameter of the blade (8).
6. A self-ventilating cooled ultra-high speed motor as claimed in claim 4, wherein the inner side of the rear end ventilation hole is provided with a dust screen (10).
7. The self-ventilation cooling type ultra-high-speed motor according to claim 4, wherein the front end ventilation hole is formed on the side surface of the circular column of the front end cover (3), and the front end ventilation hole is positioned between the front bearing (2) and the connection part between the motor shell (7) and the front end cover (3); the rear end vent hole is positioned at a part of the end face of the rear end cover (11) surrounding the rear bearing (9).
CN202320181846.4U 2023-02-10 2023-02-10 Self-ventilation cooling type ultra-high-speed motor Active CN219477746U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320181846.4U CN219477746U (en) 2023-02-10 2023-02-10 Self-ventilation cooling type ultra-high-speed motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320181846.4U CN219477746U (en) 2023-02-10 2023-02-10 Self-ventilation cooling type ultra-high-speed motor

Publications (1)

Publication Number Publication Date
CN219477746U true CN219477746U (en) 2023-08-04

Family

ID=87436686

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320181846.4U Active CN219477746U (en) 2023-02-10 2023-02-10 Self-ventilation cooling type ultra-high-speed motor

Country Status (1)

Country Link
CN (1) CN219477746U (en)

Similar Documents

Publication Publication Date Title
CN111520365B (en) Fan housing and fan with same
CN116526753B (en) Magnetic suspension motor and magnetic suspension blower with compound heat dissipation mode
CN113482978B (en) High-stability fan power system
CN110768414A (en) Cooling structure of permanent magnet motor
CN108365703B (en) Motor air-cooled impeller, double-air-channel motor and electric vehicle
CN219477746U (en) Self-ventilation cooling type ultra-high-speed motor
CN110500293B (en) Centrifugal compressor
CN212454994U (en) Fan housing and fan with same
CN211266681U (en) Forced cooling type solid rotor motor
CN108512339A (en) A kind of permanent-magnet synchronous decelerating motor casing
CN212278062U (en) Mounting structure of movable impeller and rotating shaft
CN211778076U (en) Gas compressor, rotor system and micro gas turbine
CN216751381U (en) High-speed motor of making an uproar falls in high-efficient heat dissipation of binary channels
CN116633081A (en) Magnetic suspension high-speed blower with rotor spindle heat dissipation air duct
CN116470669A (en) Opposite-rotating axial flux motor with rotor integrated with axial flow fan and ducted fan
CN217183127U (en) Heat radiator for external rotor electric machine
CN113404706A (en) Self-cooled air suspension air-blower
WO2022127026A1 (en) Small-sized high-speed fan
CN105406634B (en) Micro digital air suction motor
CN114583877A (en) Stable low heat loss fan motor
CN111049321A (en) Electric machine with double-fan cooling system
CN112974867A (en) Air floatation electric spindle and drilling machine
CN215672761U (en) Self-cooled air suspension air-blower
CN215072005U (en) High-efficient forced air cooling permanent-magnet machine based on centrifugal duct heat dissipation
CN112421823B (en) Hollow cup permanent magnet rotor and permanent magnet motor

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant