JPS5826559A - Single-phase ac motor - Google Patents

Abstract

PURPOSE:To increase the efficiency of power consumption for the titled motor by a method wherein a permanent magnet rotor is provided on the outer side of a fixed armature, a commutator consisting of a sliding piece is provided on a rotor shaft, and the motor is driven by a full-wave rectified current. CONSTITUTION:When a current is applied to coils 16a and 16b, the rotor 10 begins to start. A commutator 20 rotates following the rotation of the rotor 10, and when the rotor 10 has turned 90 deg., the brush 31b1 for power source which has been slidingly contacted to a sliding piece 20b of the commutator 20 is slidingly contacted to a sliding piece 20a, the brush 32b2 for power source which has been slidingly contacted to a sliding piece 20a is slidingly contacted to a sliding piece 20b, and the direction of the current running on the coils 16a and 16b is reversed. As the rotor 10 rotates 90 deg., the direction of the current running on the coils 16a and 16b of the fixed armature 16 is reversed, and the rotation of the rotor 10 is energized.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a single-phase AC motor, and more specifically, a single-phase AC motor consisting of a four-pole permanent magnet outer rotor is driven by a full-wave rectified current, and as the rotor rotates, The present invention relates to a single-phase AC motor equipped with a conversion device that converts the direction of current flowing through the coils of a fixed armature so as to urge rotation of a rotor.

The inventor filed a patent application No. 55-161583 as an AC motor.
I filed an application for the issue. In this application, the motor is driven by half-wave rectified current, but in order to eliminate energy loss, it is desirable to use after-wave rectified current.

The object of this invention is that full-wave rectified current can be used;
A 4-pole permanent magnet rotor is installed on the outside of the corresponding fixed armature, which has extremely high power consumption efficiency, and a commutator that rotates integrally is installed on the shaft of the rotor. Consisting of segmented sliders, these sliders include a pair of coil brushes that connect to the terminals of the coils of the stationary armature, and a pair of power supplies that connect to the single-phase AC power source through a full-wave rectifier circuit. +11. The brushes are displaced by 900 degrees in the circumferential direction and alternately come into sliding contact with each other. To provide a phase alternating current motor. Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

The drawing is an explanatory diagram of the principle of a 4-pole single-phase AC motor, where lO is a 4-pole permanent magnet rotary divided into circular arcs, rotation @ 1
It is provided so as to rotate together with 4.

A four-pole fixed armature 16 is inserted into the space between the rotating shaft 14 and the rotor 10.

20 is a commutator, and sliders 20a and 20b are provided so as to be divided in the circumferential direction of the rotating shaft 14 at a circumferential angle of 180°.

32 is a brush which is in sliding contact with the slider. Slider 20a
, 20b are made wider than the brush 32 to prevent the brush 32 from straddling both chamber movers and short-circuiting.

For the slider of the commutator 20, the fixed armature 16
A pair of coil brushes 32al, 32a2 connected to the terminals of the filters 16a, 16b, and a pair of power supply brushes connected to the single-phase AC power supply 46 via the aftereffect rectification circuit 44 are arranged clockwise as 32al, 32bl, 32a2, 32b
They are displaced by 900 in the order of 2 and are in sliding contact alternately.

The fixed armature 16 has four poles, and one linear core has coils 16a and 16b, half of which are wound in the forward direction and the other half wound in the opposite direction. Auxiliary t74sa and t74sb are provided on the linear core and extend along the circular arc of the rotor 10 in a direction opposite to the rotational direction of the rotor 10, to avoid the dead center at the time of startup.

With this configuration, when the rotor 10 is energized at this position and the coils l 6 a and l 6 b are energized, the rotor 10 starts rotating in the direction of the arrow, and as the rotor 10 rotates, the commutator 20 also rotates in the direction of the arrow. The rotor 1 rotates in the direction of
0 rotates 90 degrees, the slider 20 of the commutator 20
The power supply brush 32b1 that was suspected of sliding on b is the slider 20a.
The power supply brush 3 was in sliding contact with the slider 20a.
2b2 is in sliding contact with the slider 20b, and is a coil brush 32a.
l.

Since the sliders 32a2 are in sliding contact with each other do not change, the direction of the current flowing through the coils l 6 a and l 6 b is reversed, and when the commutator 20 further rotates 90 degrees, the power brushes 32 b 1 and 32 b 2 The sliding contact remains the same, and the coil brush 32al.

Since the sliding contact of 32a2 changes, the direction of the current flowing through the coils 16a and 16b is further reversed. In this way, the rotor l
As O rotates 900 times, the direction of the current flowing through the coils 16a, 16b of the fixed armatures 1, 0 is reversed, and the rotor 10 is urged to rotate.

As described above, according to the present invention, there is little waste of leakage magnetic flux because of the outer p-type, and since a full-wave rectified current is used, it is possible to obtain a motor with extremely high power consumption efficiency. play.

Although the present invention has been variously explained above with reference to preferred embodiments, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. It is.

[Brief explanation of the drawing]

The drawing is an explanatory diagram of the principle of an outer rotor type four-pole single-phase AC motor according to an embodiment of the present invention. 10, 0. Permanent magnet rotor, 14. ,,Axis of rotation. 16, fixed armature, 16a, 16b, . Phil, 18. ,, bearing, 20. ',, commutator,
20a, 20b9. , Suriko. 32., Brush, 44. ,,Full wave rectifier circuit. 46, , single-phase AC power supply, 48a, 48b, . Auxiliary core. Patent applicant Fumihito Komatsu procedural amendment 1. Display of the case 1982 patent Title of the invention No. 177739 Relationship with the single-phase AC motor corrector case Name of patent applicant No. V Company Father 4, Agent

Claims (1)

[Claims] 1. A 4-pole permanent magnet rotor is provided on the outside of the corresponding fixed armature, and a commutator that rotates integrally is provided on the shaft between the mouth and the end, and this commutator has a circumferential angle of 1.
It consists of a slider divided into 800 pieces, and each of these sliders includes a pair of coil brushes that connect to the terminals of the coil of the fixed armature, and a pair of brushes that connect to the single-phase AC power supply via the Kinwave rectifier circuit. A single-phase AC electric motor characterized in that the power supply brushes are displaced by 900 degrees in the circumferential direction and alternately come into sliding contact with each other.