CN202395628U

CN202395628U - Novel cage rotor for asynchronous motor

Info

Publication number: CN202395628U
Application number: CN2011205523939U
Authority: CN
Inventors: 张达
Original assignee: Zhongshan Broad Ocean Motor Co Ltd
Current assignee: Zhongshan Broad Ocean Motor Co Ltd
Priority date: 2011-12-23
Filing date: 2011-12-23
Publication date: 2012-08-22
Anticipated expiration: 2021-12-23

Abstract

The utility model discloses a novel cage rotor for an asynchronous motor, comprising a rotor core (1) laminated by a plurality of rotor laminations (11), a conductive bar (2) embedded into the rotor core (1), and an end ring (3) mounted at the end face of the rotor core (1), wherein the end ring (3) is connected with the conductive bar (2), on the outer side wall of the rotor core (1) there are protrudingly provided a plurality of ribs (12) inclined relative to an axis, and between two adjacent ribs (12) there is provided a heat radiation channel (120). The novel cage rotor is simple in structure, can resolve the problem that an air flow can not be formed inside a motor, is helpful for the motor to output heat outward, and is good in heating radiation effect.

Description

The novel cage rotor of a kind of asynchronous machine

Technical field:

The utility model relates to the novel cage rotor of a kind of asynchronous machine, belongs to machine field.

Background technology:

Traditional asynchronous motor cage rotor, as shown in Figure 1, comprise rotor core 1, be embedded into the bus in the rotor core and be installed in the end ring 3 on the rotor core end face; End ring 3 is connected with bus, and end ring 3 is provided with radiator fan 4, because asynchronous motor needs higher motor efficiency; Therefore the rotor air gap is often all less when designing with Theoretical Calculation; When motor normally moved, stator winding and rotor end ring can produce a large amount of heat, and these heats bring certain influence for the normal operation and the life-span of motor; For the heat that these are unnecessary is taken away from motor internal; Usually can increase the heat that radiator fan 4 reduces stator winding end at rotor end ring, but because internal structure of motor is comparatively compact, the radiating mode of above-mentioned increase only acts on the stator winding partial face; Motor internal can not form air stream, and radiating effect is poor.

The utility model content:

The purpose of the utility model provides the novel cage rotor of a kind of asynchronous machine, and it is simple in structure, solves motor internal and can not form airflow issues, helps the motor heat and outwards carries good heat dissipation effect.

The purpose of the utility model is achieved through following technical proposals.

The novel cage rotor of a kind of asynchronous machine; Comprise the rotor core that is overrided to form by some rotor punchings, be embedded into the bus in the rotor core and be installed in the end ring on the rotor core end face; End ring is connected with bus; Some ribs that tilt with axis of protrusion form heat dissipation channel between adjacent two ribs on the rotor core lateral wall.

Above-mentioned described some ribs are evenly distributed on the rotor core outer side surface, and some ribs are parallel to each other.

The some projections of above-mentioned described rotor punching outside protrusion, the projection of some rotor punchings laminates the formation rib.

Above-mentioned described rib is perhaps annotated pottery through injection moulding or injection moulding porcelain and is installed on the rotor core lateral surface.

Above-mentioned described end ring is provided with radiator fan.

Above-mentioned described some rib height equate that the rib altitude range is 0.2mm-1.2mm.

The scope of the angle [alpha] that above-mentioned described rib and axis tilt is less than 90 degree greater than 5 degree.

In the middle of the above-mentioned described rotor punching centre bore is set, is provided with the groove of some installation buss at the centre bore outside, rotor punching edge, the some projections of protrusion outside the groove outside, rotor punching.

Above-mentioned described bus is cast aluminium bar or cast copper bar.

The utility model compared with prior art has following effect: 1) the utility model protrudes some the ribs that tilt with axis on the rotor core lateral wall, forms heat dissipation channel between adjacent two ribs; Simple in structure; Make the air gap between stator and the rotor produce axial flow, accelerate the heat radiation of winding, solve the not good problem of the slow radiating effect of motor internal air flow; Help the motor heat and outwards carry good heat dissipation effect fast; 2) some ribs are distributed on the rotor core outer side surface, are parallel to each other, and rib is directly heat radiation not only, and form the radiator fan heat radiation; 3) some ribs that tilt with axis of protrusion on the rotor core lateral wall, end ring is provided with radiator fan, makes the axial simultaneously and radially heat radiation simultaneously of rotor, and radiating effect is better.

Description of drawings:

Fig. 1 is the stereogram of prior art rotor

Fig. 2 is the utility model stereogram.

Fig. 3 is the utility model structural front view.

Fig. 4 is the utility model rotor punching structure chart.

Fig. 5 is the partial schematic diagram of the utility model injection moulding rib;

Embodiment:

Below through specific embodiment and combine accompanying drawing that the utility model is described in further detail.

Like Fig. 2, Fig. 3 and shown in Figure 4; The utility model is the novel cage rotor of a kind of asynchronous machine; Comprise the rotor core 1 that is overrided to form by some rotor punchings 11, be embedded into the bus 2 of 1 li of rotor core and be installed in the end ring 3 on rotor core 1 end face; End ring 3 is connected with bus 2, and some ribs 12 that tilt with axis of protrusion form heat dissipation channel 120 between adjacent two ribs 12 on rotor core 1 lateral wall; Some ribs 12 are evenly distributed on rotor core 1 outer side surface, and some ribs 12 are parallel to each other; Some projections 112 are protruded in rotor punching 11 outsides, and the projection 112 of some rotor punchings 11 laminates and forms rib 12; End ring 3 is provided with radiator fan; Some ribs 12 are highly equal, and rib 12 altitude ranges are 0.2mm-1.2mm; Rib 12 is less than 90 degree greater than 5 degree with the scope of the angle [alpha] that axis tilts; In the middle of the described rotor punching 11 centre bore 110 is set, in centre bore 110 outsides, rotor punching 11 edges are provided with the groove 111 of some installation buss 2, in groove 111 outsides, rotor punching 11 outsides protrude some projections 112; Bus 2 is cast aluminium bar or cast copper bar.

As shown in Figure 5, the edge of rotor core 1 forms rib 12 through the mode of injection moulding or injection moulding porcelain or notes pottery.

The utility model protrudes some the ribs 12 that tilt with axis on rotor core 1 lateral wall, form heat dissipation channel 120 between adjacent two ribs 12, rotor rotation behind electrical power; Rib 12 is along with rotation, and the air of motor internal forms certain draught head, under the influence of draught head; Motor internal forms the air stream of fixed-direction; Thereby effectively with heat between the rotor air gap with the fixed-direction transmission, simultaneously, the muscle of these protrusions has also increased the rotor surface area of dissipation; Rotor body and motor internal heat dissipation problem have been solved, good heat dissipation effect.

Claims

1. novel cage rotor of asynchronous machine; Comprise the rotor core (1) that is overrided to form by some rotor punchings (11), be embedded into the bus (2) of rotor core (1) lining and be installed in the end ring (3) on rotor core (1) end face; End ring (3) is connected with bus (2); It is characterized in that: some ribs (12) that tilt with axis of protrusion on rotor core (1) lateral wall form heat dissipation channel (120) between adjacent two ribs (12).

2. the novel cage rotor of a kind of asynchronous machine according to claim 1 is characterized in that: some ribs (12) are evenly distributed on rotor core (1) outer side surface, and some ribs (12) are parallel to each other.

3. the novel cage rotor of a kind of asynchronous machine according to claim 1 is characterized in that: rotor punching (11) outside protrusion some projections (112), the projection (112) of some rotor punchings (11) laminate and form rib (12).

4. the novel cage rotor of a kind of asynchronous machine according to claim 1 is characterized in that: rib (12) is perhaps annotated pottery through injection moulding or injection moulding porcelain and is installed on rotor core (1) lateral surface.

5. according to claim 1 or the novel cage rotor of 2 or 3 or 4 described a kind of asynchronous machines, it is characterized in that: end ring (3) is provided with radiator fan.

6. according to claim 1 or the novel cage rotor of 2 or 3 or 4 described a kind of asynchronous machines, it is characterized in that: rib (12) altitude range is 0.2mm-1.2mm.

7. the novel cage rotor of a kind of asynchronous machine according to claim 1 is characterized in that: rib (12) is less than 90 degree greater than 5 degree with the scope of the angle [alpha] that axis tilts.

8. the novel cage rotor of a kind of asynchronous machine according to claim 3; It is characterized in that: centre bore (110) is set in the middle of the described rotor punching (11); Be provided with the groove (111) of some installation buss (2) at centre bore (110) outside, rotor punching (11) edge, protrusion some projections (112) outside groove (111) outside, rotor punching (11).

9. the novel cage rotor of a kind of asynchronous machine according to claim 1 is characterized in that: bus (2) is cast aluminium bar or cast copper bar.