CN201063467Y

CN201063467Y - High-power high-voltage solid rotor permanent-magnet motor rotor shaft radial ventilation system

Info

Publication number: CN201063467Y
Application number: CNU200720116304XU
Authority: CN
Inventors: 李伟力; 陈文彪; 金卫东; 罗应立; 沈稼丰; 张晓晨
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2007-05-30
Filing date: 2007-05-30
Publication date: 2008-05-21
Anticipated expiration: 2017-05-30

Abstract

The utility model discloses a rotor shaft radial ventilation system for a high-power high voltage solid rotor permanent magnetic electromotor rotor and relates to a ventilation system of a permanent magnetic motor rotor to solve the problems that the poor ventilation effect of a solid rotor of the prior high voltage permanent magnet motor easily causes that the temperature rise of a solid rotor is too high, and the rotor side permanent magnet can generate irreversible high temperature and excitation-loss. A plurality of ventilation channels are arranged on the inner circle surface of a solid rotor of the utility model; a plurality of rotor ventilation through holes are arranged between the bottom of the ventilation channels and the excircle surface of the solid rotor; a plurality of stator ventilation through holes are arranged between the inner circle surface and the excircle surface of the stator; and centrifugal fans are arranged on a motor axis. Cooling wind produced by the motor rotor ventilation system of the utility model is capable of taking away mass heat generated by the motor, thereby reducing the temperature rise of the motor rotor, prolonging the working life of the permanent magnets or the whole motor, and improving the over load capacity of the motor.

Description

Axial radial ventilation system for high-power high voltage solid rotor permanent magnetic electromotor rotor

Technical field

The utility model relates to a kind of ventilating system of permanent-magnet electric machine rotor.

Background technology

The high-power high voltage induction motor is widely used in occasions such as blower fan, water pump, and is along with the enforcement of national energy policy, more and more higher to this industrial circle requirements of saving energy.The application of normal lamination formula rotor high-tension magneto can improve electric energy, but the starting performance of motor own is relatively poor, and starting current is bigger, and starting torque is less; On the other hand, the rigidity of rotor is relatively poor, and processing technology is more complicated also.Compare with above-mentioned motor, solid rotor high voltage permanent motor not only has good energy-saving effect, and starting performance be improved significantly, but the effect of the ventilating system of existing solid rotor structure is relatively poor, the easy temperature rise of motor is too high, and when the work of motor periodicity nominal load, the temperature rise meeting of rotor body temperature is higher, make the rotor-side permanent magnet produce the non-reversible high-temperature loss of excitation easily, cause motor to damage.

The utility model content

The utility model is relatively poor for the solid rotor ventilation effect that solves existing high-tension magneto, cause the solid rotor temperature rise too high easily, make the rotor-side permanent magnet produce the problem of non-reversible high-temperature loss of excitation, and a kind of axial radial ventilation system for high-power high voltage solid rotor permanent magnetic electromotor rotor is provided.The utility model is by stator 1, solid rotor 2, centrifugal fan 6, motor shaft 7 and form every magnetic spare 8, be socketed on the motor shaft 7 every magnetic spare 8, solid rotor 2 is socketed on magnetic spare 8, air gap 9 is arranged between the outer round surface of the internal circular surfaces of stator 1 and solid rotor 2, on the internal circular surfaces of solid rotor 2, have many ventilation conduits 5, between the outer round surface of the bottom face of ventilation conduit 5 and solid rotor 2, have a plurality of rotor ventilation through holes 3, have a plurality of stator ventilation through holes 4 between the internal circular surfaces of stator 1 and outer round surface, centrifugal fan 6 is arranged on the motor shaft 7.

Operation principle: under the effect of centrifugal fan 6, cooling air enters the inside of solid rotor 2 from many air duct grooves 5, cooling air enters a plurality of rotor ventilation through holes 3 under the centrifugal action that solid rotor 2 rotations produce, enter and also enter a plurality of stator ventilation through holes 4 after the cooling air of rotor ventilation through hole 3 and the cooling air in the air gap 9 converge, thereby reach the effect of cooling solid rotor by action of centrifugal force.

The beneficial effects of the utility model are: the cooling air that the ventilating system of being made up of rotor ventilation hole, stator ventilation hole, air gap and centrifugal fan produces can be taken away the heat that motor produces in a large number, can effectively reduce the temperature rise of motor rotor, prolong the working life of permanent magnet and whole motor, and can strengthen the overload capability of motor.

Description of drawings

Fig. 1 is an overall structure schematic diagram of the present utility model, and Fig. 2 is the A-A cutaway view of Fig. 1.

Embodiment

Embodiment one: referring to Fig. 1, Fig. 2, present embodiment is by stator 1, solid rotor 2, centrifugal fan 6, motor shaft 7 and form every magnetic spare 8, be socketed on the motor shaft 7 every magnetic spare 8, solid rotor 2 is socketed on magnetic spare 8, air gap 9 is arranged between the outer round surface of the internal circular surfaces of stator 1 and solid rotor 2, on the internal circular surfaces of solid rotor 2, have many ventilation conduits 5, between the outer round surface of the bottom face of ventilation conduit 5 and solid rotor 2, have a plurality of rotor ventilation through holes 3, have a plurality of stator ventilation through holes 4 between the internal circular surfaces of stator 1 and outer round surface, centrifugal fan 6 is arranged on the motor shaft 7.Under the effect of centrifugal fan 6, in the ventilation conduit 5 of solid rotor 2, produce cooling air, cooling air in the ventilation conduit 5 passes rotor ventilation through hole 3 under the effect of rotor rotary centrifugal force, enter stator ventilation through hole 4 after converging with cooling air in the air gap 9, thereby reach the effect of cooling solid rotor 2.

Claims

1. axial radial ventilation system for high-power high voltage solid rotor permanent magnetic electromotor rotor, it is by stator (1), solid rotor (2), centrifugal fan (6), motor shaft (7) and form every magnetic spare (8), be socketed on the motor shaft (7) every magnetic spare (8), solid rotor (2) is socketed on magnetic spare (8), air gap (9) is arranged between the outer round surface of the internal circular surfaces of stator (1) and solid rotor (2), it is characterized in that on the internal circular surfaces of solid rotor (2), having many ventilation conduits (5), between the outer round surface of the bottom face of ventilation conduit (5) and solid rotor (2), have a plurality of rotor ventilation through holes (3), have a plurality of stator ventilation through holes (4) between the internal circular surfaces of stator (1) and outer round surface, centrifugal fan (6) is arranged on the motor shaft (7).