CN201001058Y

CN201001058Y - Single phase series excited motor rotor

Info

Publication number: CN201001058Y
Application number: CNU2007201055219U
Authority: CN
Inventors: 吴建美
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-12
Filing date: 2007-01-12
Publication date: 2008-01-02
Anticipated expiration: 2017-01-12

Abstract

The utility model relates to a single-phase series excitation motor rotor, which comprises a rotor core arranged on the axle of the motor, wherein a wire winding slot is arranged on the motor rotor, an enamelled copper wire is wound in the wire winding slot, a cooling air channel is arranged on the wire winding slot, the enamelled copper wire is arranged on the lower part of the inner cavity of the wire winding slot, a cooling area is arranged on the upper part of the inner cavity of the wire winding slot, and the cooling area is connected with the cooling air channel. The utility model provides a single-phase series excitation motor rotor which can decrease the using quantity of the enamelled copper wire, improve the qualified rate of the motor, and effectively reduce the temperature increase of the rotor.

Description

The single phase series motivated motor rotor

(1) technical field

The utility model relates to a kind of single phase series motivated motor rotor.

(2) background technology

Existing single phase series motivated motor rotor with reference to Fig. 1, comprises the rotor core 1 that is installed on the motor shaft 8, has winding slot 2 on the described rotor core 1, is wound with enamelled wire 3 in the described winding slot 2, fills up enamelled wire 3 in the winding slot 2.The shortcoming that exists: (1), enamelled wire consumption are many, the cost height; (2), the copper factor height, qualification rate is low; (3), rotor temperature rise height; (4), Unit Weight is exerted oneself low; (5), rotor insulation lacquer consumption is big.

Existing series excited machine rotor weak heat-dissipating, temperature rise, the copper factor height is made difficulty, and the turn-to-turn qualification rate is low, and the ampacity of enamelled wire is low, and current density is at 8A-12A.

(3) summary of the invention

In order to overcome the deficiency that the enamelled wire consumption is many, qualification rate is low, rotor temperature rise is high of existing single phase series motivated motor rotor, the utility model provides a kind of can reduce the enamelled wire consumption, improve the motor qualification rate, effectively reduce the single phase series motivated motor rotor of rotor temperature rise.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of single phase series motivated motor rotor, comprise the rotor core that is installed on the motor shaft, have winding slot on the described rotor core, be wound with enamelled wire in the described winding slot, have cooling ventilation duct on the described winding slot, described winding slot inner chamber lower disposed enamelled wire, described winding slot inner chamber top is cooled region, described cooled region is communicated with cooling ventilation duct.

As preferred a kind of scheme: in described winding slot, be provided with insulating varnish between the described enamelled wire.

As preferred another kind of scheme: the junction of described cooled region and described cooling ventilation duct is provided with groove skewer or groove paper.

Technical conceive of the present utility model is: single-phase series excitation (the string utmost point) rotor utilizes winding slot to ventilate to cool the saving enamelled wire, and the ampacity of enamelled wire is improved greatly, and every square millimeter is 16A-23A, has saved rotor enamelled wire 40%-50%.Scope of application electric tool, household electrical appliance and all string utmost point motors.

The processing step of rotor of the present utility model is: (1), bag slot liner paper; (2), rotor winding; (3), plug groove skewer; (4) air duct shaping (copper factor low time without shaping); (5) rotor drips lacquer (require the ventilation cooling duct can not have the rotor insulation lacquer to stop up, guarantee unimpeded).

The beneficial effects of the utility model mainly show: (1), can reduce the enamelled wire consumption, improve the motor qualification rate, effectively reduce rotor temperature rise; (2), the carrying capacity of enamelled wire, bring up to 16.8～23AMM from original 8A～12A/MM; (3), under same iron core situation, can increase effect 10～20%, save enamelled wire 40～50%, first-time qualification rate improves 5--10%; Rotor temperature rise and stator temperature rise are maintained an equal level or be lower than stator, improved the life-span of motor.

(4) description of drawings

Fig. 1 is the generalized section of existing single phase series motivated motor rotor.

Fig. 2 is the generalized section of single phase series motivated motor rotor of the present utility model.

Fig. 3 is the generalized section that does not have the single phase series motivated motor rotor of groove skewer or groove paper.

Fig. 4 does not have groove skewer or groove paper but with the generalized section of the single phase series motivated motor rotor of slot liner paper.

(5) embodiment

Below in conjunction with accompanying drawing the utility model is further described.

With reference to Fig. 2, a kind of single phase series motivated motor rotor, comprise the rotor core 1 that is installed on the motor shaft 8, have winding slot 2 on the described rotor core 1, be wound with enamelled wire 3 in the described winding slot 2, have cooling ventilation duct 4 on the described winding slot 2, described winding slot 2 inner chamber lower disposed enamelled wires, described winding slot 2 inner chamber tops are cooled region 5, and described cooled region 5 is communicated with cooling ventilation duct 4.

In described winding slot 2, be provided with insulating varnish 6 between the described enamelled wire 3.Described cooled region 5 is provided with groove skewer or groove paper 7 with the junction of described cooling ventilation duct 4.

Single phase series motivated motor rotor shown in Figure 3 is with the difference of Fig. 2: do not have groove skewer or groove paper 7; Single phase series motivated motor rotor shown in Figure 4 is with the difference of Fig. 2: do not have groove skewer or groove paper, with slot liner paper instead of grooves skewer or groove paper.

The single phase series motivated motor rotor utilizes winding slot 2 to ventilate to cooling and saves enamelled wire 3, and the ampacity of enamelled wire is improved greatly, and every square millimeter is 16A-23A, has saved rotor enamelled wire 40%-50%.Scope of application electric tool, household electrical appliance and all series excited machines.

Claims

1, a kind of single phase series motivated motor rotor, comprise the rotor core that is installed on the motor shaft, have winding slot on the described rotor core, be wound with enamelled wire in the described winding slot, it is characterized in that: have cooling ventilation duct on the described winding slot, described winding slot inner chamber lower disposed enamelled wire, described winding slot inner chamber top is cooled region, described cooled region is communicated with cooling ventilation duct.

2, single phase series motivated motor rotor as claimed in claim 1 is characterized in that: in described winding slot, be provided with insulating varnish between the described enamelled wire.

3, single phase series motivated motor rotor as claimed in claim 1 or 2 is characterized in that: the junction of described cooled region and described cooling ventilation duct is provided with groove skewer or groove paper.