CN205622358U

CN205622358U - Permanent magnet rotor for motor

Info

Publication number: CN205622358U
Application number: CN201620401997.6U
Authority: CN
Inventors: 邱立坤
Original assignee: Yue Fu Manufacturing (heyuan) Co Ltd
Current assignee: Yue Fu Manufacturing (heyuan) Co Ltd
Priority date: 2016-05-05
Filing date: 2016-05-05
Publication date: 2016-10-05
Anticipated expiration: 2026-05-05

Abstract

The utility model relates to a permanent magnet rotor for motor aims at providing the permanent magnet rotor for motor that can effectively reduce rotor surfaces temperature and long service life, including pivot and rotor core, rotor core's center department offers and is used for inlaying the centre bore of establishing the pivot, inboard even the opening that rotor core is close to the centre bore is provided with the permanent magnetism groove, the periphery that rotor core kept away from the centre bore is provided with the air conduits structure, inlay on the permanent magnetism groove and establish the permanent magnet, the air conduits structure is including the axial air conduits and the radial air conduits of setting between adjacent two axial air conduits of a plurality of even settings.

Description

A kind of motor permanent magnetic rotor

Technical field

This utility model relates to technical field of motor manufacture, particularly relates to a kind of motor permanent magnetic rotor.

Background technology

In motor production technical field, solid-rotor permanent-magnet motor has simple in construction, starting performance Good and rotor mechanical strength high, vibration and the advantage such as electromagnetic noise sound is relatively low when running so that it is at height Speed is quite varied to ultrahigh speed field application prospect.

Traditional solid-rotor permanent-magnet motor uses solid construction due to rotor, humorous in air-gap field Ripple can produce bigger eddy-current loss on solid rotor surface, and then can produce high temperature at rotor surface, Directly affect the electromagnetic performance of permanent magnet, time serious, even can make permanent magnet generation irreversible demagnetization, Reducing service life, therefore, traditional solid-rotor permanent-magnet motor also needs further to improve.

Utility model content

For the deficiency of above-mentioned prior art, the purpose of this utility model is to provide one Can effectively reduce rotor surface temperature and the motor permanent magnetic rotor of length in service life.

The purpose of this utility model is achieved by the following technical programs:

A kind of motor permanent magnetic rotor, including rotating shaft and rotor core, the center of described rotor core Offering the centre bore for being embedded rotating shaft, described rotor core is uniform near the inner side of centre bore Offering and be equipped with permanent magnetism groove, described rotor core is provided with air duct structure away from the periphery of centre bore, Being embedded permanent magnet on described permanent magnetism groove, described air duct structure includes some the axles being uniformly arranged To air duct and be arranged on the Radial ventilation duct between adjacent two axial ventilation ditches.

As preferably: mutual conduction between described axial ventilation ditch and Radial ventilation duct.

As preferably: be provided with every magnetosphere in the hole wall of described centre bore.

As preferably: described permanent magnet has 4 and between any two in 90 degree of settings.

Compared with prior art, the beneficial effects of the utility model are:

This utility model relative to traditional solid-rotor permanent-magnet motor in rotor core away from centre bore Periphery be provided with air duct structure design, this structure is by Radial ventilation duct and two, axial ventilation ditch Divide and constitute and the heat produced at axle center effectively can be dispelled the heat, reduce rotor surface and produce high temperature, Reduce the probability of permanent magnet demagnetization, the service life of rotor is greatly improved.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of motor permanent magnetic rotor described in the utility model.

Detailed description of the invention

This utility model is made the most specifically by the embodiment be given below in conjunction with the accompanying drawings Bright.

As it is shown in figure 1, a kind of motor permanent magnetic rotor, including rotating shaft 1 and rotor core 2, turn The center of son unshakable in one's determination 2 offers the centre bore 3 for being embedded rotating shaft 1, during rotor core 2 is close The inner side of central hole 3 is offered uniformly and is equipped with permanent magnetism groove 4, and rotor core 2 sets away from the periphery of centre bore Being equipped with air duct structure 5, permanent magnetism groove 4 is embedded permanent magnet 6, air duct structure 5 includes some Axial ventilation ditch 51 that bar is uniformly arranged and being arranged between adjacent two axial ventilation ditches 51 Radial ventilation duct 52, mutual conduction between axial ventilation ditch 51 and Radial ventilation duct 52, air duct Between the design of mutual conduction improve further the mobility of air-flow, strengthen the heat radiation to temperature.

It is provided with in the hole wall of centre bore 3 every magnetosphere 7, reduces magnetic field countershaft 1 every magnetosphere 7 design Impact, it is ensured that rotor operation steady.

Permanent magnet 6 has 4 and between any two in 90 degree of settings, the structure design of permanent magnet 6 Rationally so that the Distribution of Magnetic Field of rotor uniformly, and then improves the operational efficiency of rotor.

Above-described embodiment is the most for illustration of the utility model, and is not limitation of the utility model, About the those of ordinary skill of technical field, in the feelings without departing from spirit and scope of the present utility model Under condition, it is also possible to make a variety of changes and modification, the technical scheme of the most all equivalents falls within this The category of utility model, scope of patent protection of the present utility model should be limited by each claim.

Claims

1. a motor permanent magnetic rotor, including rotating shaft and rotor core, the center of described rotor core Place offers the centre bore for being embedded rotating shaft, it is characterised in that: described rotor core is near center The inner side in hole is offered uniformly and is equipped with permanent magnetism groove, and described rotor core is away from the peripheral setting of centre bore Having air duct structure, described permanent magnetism groove is embedded permanent magnet, described air duct structure includes some Axial ventilation ditch that bar is uniformly arranged and be arranged on the radial direction between adjacent two axial ventilation ditches and lead to Wind ditch.

A kind of motor permanent magnetic rotor the most according to claim 1, it is characterised in that: described Mutual conduction between axial ventilation ditch and Radial ventilation duct.

A kind of motor permanent magnetic rotor the most according to claim 1, it is characterised in that: in described It is provided with every magnetosphere in the hole wall of central hole.

4. according to a kind of motor permanent magnetic rotor described in claim 1 or 2 or 3, it is characterised in that: Described permanent magnet has 4 and between any two in 90 degree of settings.