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Commutated motor, electric fan, electric vacuum cleaner, and commutated-motor manufacturing method

An electric blower and commutator technology, applied in the direction of DC commutator, manufacturing motor generators, electric components, etc., can solve the problems of reduced efficiency, unable to fully improve the efficiency of magnetic circuit, etc., and achieve the effect of improving efficiency

Active Publication Date: 2016-07-06
MITSUBISHI ELECTRIC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the more the stator core is divided into more blocks, the more the number of divided planes of the stator core increases. Therefore, the influence of efficiency reduction due to the divided planes of the stator core is more affected, and the magnetic field cannot be sufficiently improved. loop efficiency

Method used

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  • Commutated motor, electric fan, electric vacuum cleaner, and commutated-motor manufacturing method
  • Commutated motor, electric fan, electric vacuum cleaner, and commutated-motor manufacturing method
  • Commutated motor, electric fan, electric vacuum cleaner, and commutated-motor manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0023] figure 1 It is a longitudinal sectional view showing the electric blower according to Embodiment 1 of the present invention. Such as figure 1 As shown, electric blower 1 according to Embodiment 1 includes: blower unit 2 generating suction force; and commutator motor 3 which drives blower unit 2 . Electric blower 1 can be applied to, for example, an electric vacuum cleaner.

[0024] The air blower 2 includes: a fan 4 having a plurality of blades; and a fan guide 5 covering the fan 4 . The fan guide 5 guides the air flowing with the rotation of the fan 4 to the inside of the commutator motor 3 . The flowing air is discharged from an opening (not shown) provided in the frame 6 while cooling the commutator motor 3 which generates heat during operation.

[0025] The commutator motor 3 includes: a stator 7 fixed inside a cup-shaped or cylindrical frame 6 ; and a rotor 8 disposed inside the stator 7 and facing it with a gap 20 therebetween. The stator 7 functions as an ex...

Embodiment approach 2

[0044] Next, refer to Figure 6 ~ Figure 8 , Embodiment 2 of the present invention will be described, focusing on the differences from Embodiment 1 described above, and the same parts or corresponding parts will be given the same reference numerals and descriptions will be omitted.

[0045] Figure 6 It is a cross-sectional view of the main part of the commutator motor 3 according to the second embodiment viewed from the blower unit 2 side in the rotation axis direction of the rotor 8 . Figure 7 From Figure 6 A diagram in which only the stator core 9 is extracted. Such as Figure 6 as well as Figure 7 As shown, in the second embodiment, the number of laminated grain-oriented electrical steel sheets 94 gradually decreases as the magnetic pole portions 91A, 92A, 91B, and 92B of the stator core 9 approach the core dividing planes 25a, 25b. In addition, in the magnetic pole portions 91A, 92A, 91B, and 92B of the stator core 9 , end portions 941 of a plurality of layers of th...

Embodiment approach 3

[0049] Next, refer to Figure 9 as well as Figure 10 Embodiment 3 of the present invention will be described, focusing on differences from the above-described embodiment, and the same parts or corresponding parts will be given the same reference numerals and descriptions will be omitted.

[0050] Figure 9 It is a schematic diagram which shows the example of the cutting process of the manufacturing method of the commutator motor concerning Embodiment 3 of this invention. Figure 10 It is a schematic diagram which shows the example of the bending process of the commutator motor manufacturing method concerning Embodiment 3 of this invention.

[0051] The commutator motor manufacturing method of the third embodiment is a method of manufacturing the commutator motor 3 of the present invention. The commutator motor manufacturing method according to Embodiment 3 is characterized by the step of manufacturing stator core 9 . The process of manufacturing the stator core 9 includes...

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PUM

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Abstract

This invention provides the following: a commutated motor that has a stator core using oriented magnetic steel sheets and makes it possible to substantially improve the efficiency of the magnetic circuit of said commutated motor; an electric fan; an electric vacuum cleaner; and a commutated-motor manufacturing method. This commutated motor (3) is provided with the following: a stator (7) that has a stator core (9) and a field winding (10); and a rotor (8) that has an armature winding (17) and is positioned inside the stator (7). The stator core (9) is formed by laminating together strip-shaped oriented magnetic steel sheets (94), the easy magnetization direction of each of said oriented magnetic steel sheets (94) being the lengthwise direction thereof, and normals to the surfaces of said oriented magnetic steel sheets (94) are perpendicular to the axis of rotation of the rotor (8). Core segmentation surfaces (25a, 25b) segment the stator core (9) into a first stator core (9A) and a second stator core (9B), and the number of oriented magnetic steel sheets (94) laminated together decreases with decreasing distance from said core segmentation surfaces (25a, 25b).

Description

technical field [0001] The invention relates to a commutator motor, an electric blower, an electric vacuum cleaner and a method for manufacturing the commutator motor. Background technique [0002] There is known an electric blower in which a blower unit and a motor are integrated. Electric blowers are installed in electric vacuum cleaners and the like. Usually, an electric blower is used by rotating at a high speed of 30,000 to 45,000 revolutions per minute. Therefore, a commutator motor is used in an electric blower. This motor is composed of a stator and a rotor. The stator has two magnetic poles and a field winding. The rotor is located inside the stator and has an armature winding and a commutator. [0003] In the conventional electric blower, the stator core is formed in a substantially square frame shape, and has substantially crescent-shaped magnetic poles protruding inward from both sides facing each other at 180°. The flow of magnetic flux is as follows: From th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K23/40H02K1/12
CPCH02K15/022H02K23/08H02K23/405
Inventor 桶谷直弘马场和彦早津守安岛武彦尾高秀一浜崎光将
Owner MITSUBISHI ELECTRIC CORP