KR20140007716A

KR20140007716A - Explosion proof motor

Info

Publication number: KR20140007716A
Application number: KR1020120075281A
Authority: KR
Inventors: 이호경
Original assignee: 현대중공업 주식회사
Priority date: 2012-07-10
Filing date: 2012-07-10
Publication date: 2014-01-20

Abstract

The present invention relates to a pressure-proof explosion-proof electric motor, comprising a rotating shaft, a rotor surrounding the rotating shaft, a stator surrounding the rotor spaced apart and the stator, and an enclosure including an embossing structure on an outer surface thereof. Such a pressure-proof explosion-proof motor can be provided with an embossed structure on the outer surface of the enclosure to increase the durability of the motor.

Description

Explosion-proof electric motors {EXPLOSION PROOF MOTOR}

The present invention relates to a explosion-proof explosion-proof electric motor, and more particularly, to a explosion-proof explosion-proof motor having an embossed structure for reinforcement on the outer surface of the motor enclosure to increase the durability against explosion.

Explosion-proof electric motors are special equipments used in high-explosion industries such as oil, chemical, gas and shipbuilding industries. Explosion-proof explosion-proof motors shall prevent secondary explosions outside the motor by preventing flames from spreading inside the motor during explosion test during explosion-proof characteristics test. In addition, since the explosion-proof explosion-proof electric motor is installed and used in a place where an explosive atmosphere exists, it must have excellent durability against explosion. If the durability of the motor structure is not sufficient, there may be a problem that a crack occurs in the motor structure, the explosion and flame generated inside the motor is transmitted to the outside to generate a secondary explosion outside the motor.

Korean Utility Model Publication No. 20-1999-0039148 discloses a housing for a motor that enables the stator to be easily press-fitted and seated on a seating part of the housing, as well as to improve motor noise and short circuit pressure. To this end, the present invention is a housing for a motor having a seating portion in which a stator is press-fitted and seated, and a processing surface processed to be press-fitted with a gap when the stator is press-fitted, and the stator is firmly fixed at the lower side of the processing surface. It consists of a contact surface having a stator and an interference fit tolerance to be fixed, and a recessed groove formed in the outer peripheral direction of the housing in the end surface of the contact surface to accommodate the chips generated in the contact surface by the stator indentation.

Korean Laid-Open Utility Model No. 20-2009-0013722 relates to an explosion proof electric motor including a labyrinth seal having a labyrinth structure. The pressure-resistant explosion-proof motor has a rotary shaft fixed to the motor, an electric motor frame through which the rotary shaft penetrates and covers the electric motor, and is sealed between the rotary shaft and the electric motor frame, so that wear does not occur when the rotary shaft rotates. Including a labyrinth seal having a labyrinth structure that prevents the flame caused by the explosion from propagating outside the motor frame during the explosion test of the motor while maintaining a clearance, thereby extending the life by preventing wear of the labyrinth seal, It is possible to prevent the flame from being transmitted to the outside of the motor frame to prevent secondary explosion outside the motor due to the explosion inside the motor.

Korean Utility Model Model No. 20-1999-0039148 Korean Utility Model Model No. 20-2009-0013722

One embodiment of the present invention is to provide a pressure-resistant explosion-proof motor to increase the durability of the motor by providing a reinforcing embossing structure on the outer surface of the motor enclosure.

Among the embodiments, the explosion-proof electric motor includes a rotating shaft, a rotor surrounding the rotating shaft, a stator surrounding the rotor spaced apart from the rotor, and an enclosure including an embossing structure on an outer surface thereof.

In one embodiment, the enclosure may be formed such that the embossed structure is convex outward.

In one embodiment, the enclosure may be formed such that the embossed structure is convex inward.

In one embodiment, the enclosure may be formed in the convex complex of the embossing structure to the outside and inward, it may further include a plurality of cooling pipes surrounding the stator spaced therein.

Explosion-proof explosion-proof motor according to an embodiment of the present invention can be provided with a reinforcing embossing structure on the outer surface of the motor enclosure to increase the durability of the motor.

1 is a cross-sectional view illustrating a explosion-proof explosion-proof electric motor according to an embodiment of the present invention.
2 is a view for explaining the enclosure of FIG.
3 is a view for explaining the enclosure of FIG.
4 is a view for explaining the enclosure of FIG.

The description of the present invention is merely an example for structural or functional explanation, and the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, the embodiments are to be construed as being variously embodied and having various forms, so that the scope of the present invention should be understood to include equivalents capable of realizing technical ideas. Also, the purpose or effect of the present invention should not be construed as limiting the scope of the present invention, since it does not mean that a specific embodiment should include all or only such effect.

Meanwhile, the meaning of the terms described in the present application should be understood as follows.

The terms "first "," second ", and the like are intended to distinguish one element from another, and the scope of the right should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" to another element, it may be directly connected to the other element, but there may be other elements in between. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions describing the relationship between the components, such as "between" and "immediately between" or "neighboring to" and "directly neighboring to", should be interpreted as well.

It should be understood that the singular " include "or" have "are to be construed as including a stated feature, number, step, operation, component, It is to be understood that the combination is intended to specify that it does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Generally, the terms defined in the dictionary used are to be interpreted to coincide with the meanings in the context of the related art, and should not be interpreted as having ideal or excessively formal meanings unless clearly defined in the present application.

1 is a cross-sectional view illustrating a explosion-proof explosion-proof electric motor according to an embodiment of the present invention.

1, the explosion-proof explosion-proof electric motor 100 includes a rotating shaft 110, a rotor 120, a stator 130, and an enclosure 140. The rotary shaft 110 is located at the center of each component and rotates by an external force.

The rotor 120 surrounds the rotation shaft 110, is formed in the same length direction as the rotation shaft 110, and may include a plurality of electromagnets having magnetic force. In one embodiment, the rotor 120 may be composed of a plurality of coils wound in the longitudinal direction. In one embodiment, the rotor 120 may be composed of a plurality of coils wound in the longitudinal and vertical direction.

The stator 130 surrounds the rotor 120 spaced apart from each other, is formed in the same length direction as the rotation shaft 110, and may be composed of a plurality of electromagnets having magnetic force. In one embodiment, stator 130 may be composed of a plurality of coils wound in the longitudinal direction. In one embodiment, the stator 130 may be composed of a plurality of coils wound in the longitudinal direction and the vertical direction.

The enclosure 140 surrounds the stator 130 and includes an embossing structure 141 on its outer surface. In one embodiment, the enclosure 140 may further include a plurality of cooling pipes 142 positioned to surround the stator 130 spaced apart. The plurality of cooling pipes 142 may increase the cooling efficiency of the components inside the enclosure 140. Hereinafter, the embossing structure 141 of the enclosure 140 will be described in more detail with reference to FIGS. 2 to 4.

FIG. 2 is a view for explaining the enclosure of FIG. 1, FIG. 3 is a view for explaining the enclosure of FIG. 1, and FIG. 4 is a view for explaining the enclosure of FIG. 1.

2 to 4, the enclosure 140 includes an embossed structure 141 on the outer side to increase durability. In one embodiment, the embossed structure 141 may be convexly formed outward of the enclosure 140. In one embodiment, the embossed structure 141 may be convexly formed inside the enclosure 140. In one embodiment, the embossed structure 141 may be formed convexly in the outer and inner sides of the enclosure 140. The embossing structure 141 may have a durability that can withstand the explosion that occurs inside the explosion-proof explosion-proof electric motor (100).

Although described above with reference to the preferred embodiment of the present application, those skilled in the art various modifications and changes to the present application without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

110: axis of rotation 120: rotor
130: stator 140: enclosure
141: embossed structure 142: a plurality of cooling pipes

Claims

A rotating shaft;
A rotor surrounding the rotating shaft;
A stator surrounding the rotor spaced apart; And
Explosion-proof electric motor including a; enclosing the stator, the enclosure including an embossed structure on the outer surface.

The method of claim 1, wherein the enclosure is
Pressure-proof explosion-proof electric motor, characterized in that the embossed structure is formed to be convex outward.

The method of claim 1, wherein the enclosure is
Explosion-proof electric motor, characterized in that the embossed structure is formed convex inward.

The method of claim 1, wherein the enclosure is
Explosion-proof explosion-proof electric motor, characterized in that the embossed structure is formed convexly to the outside and the inside.

The method of claim 1, wherein the enclosure is
Pressure-resistant explosion-proof electric motor further comprises a plurality of cooling pipes surrounding the stator spaced therein.