KR20160117072A - Cover of mccb with radiant heat structure - Google Patents

Cover of mccb with radiant heat structure Download PDF

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Publication number
KR20160117072A
KR20160117072A KR1020150045692A KR20150045692A KR20160117072A KR 20160117072 A KR20160117072 A KR 20160117072A KR 1020150045692 A KR1020150045692 A KR 1020150045692A KR 20150045692 A KR20150045692 A KR 20150045692A KR 20160117072 A KR20160117072 A KR 20160117072A
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KR
South Korea
Prior art keywords
heat
partition wall
circuit breaker
cover
heat radiation
Prior art date
Application number
KR1020150045692A
Other languages
Korean (ko)
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KR101981597B1 (en
Inventor
박도현
안병수
김덕중
Original Assignee
현대중공업 주식회사
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Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020150045692A priority Critical patent/KR101981597B1/en
Publication of KR20160117072A publication Critical patent/KR20160117072A/en
Application granted granted Critical
Publication of KR101981597B1 publication Critical patent/KR101981597B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0214—Housing or casing lateral walls containing guiding grooves or special mounting facilities
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/06—Housings; Casings; Bases; Mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/52—Cooling of switch parts

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  • Breakers (AREA)

Abstract

The present invention relates to a cover of a molded case circuit breaker having a heat radiation structure and, more specifically, to a cover of a molded case circuit breaker having a heat radiation structure, wherein heat exchange between inner air and outer air is enabled if the present invention is applied to the molded case circuit breaker and the molded case circuit breaker does not operate, and the inside of the molded case circuit breaker can be sealed if the molded case circuit breaker operates. The cover of a molded case circuit breaker according to the present invention comprises: a body part; a first sidewall part and a second sidewall part extending from the end of one side or the other side of the body part; a first partition wall part and a second partition wall part formed to be separated between the first sidewall part and the second sidewall part; first heat radiation plates arranged respectively between the first sidewall part and the first partition wall part, between the first partition wall part and the second partition wall part, and between the second partition wall part and the second sidewall part, and having multiple first heat radiation holes formed on a surface; a second heat radiation plate arranged to be separated from the first heat radiation plate toward the inside of the body part and having multiple second heat radiation holes formed on a surface; and a folding part arranged between the first heat radiation part and the second heat radiation part, having one side combined with the side surface part of the second heat radiation part, and having the other side formed by being folded toward the center of the first heat radiation plate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cover for a wiring breaker having a heat radiation structure,

The present invention relates to a cover for a wiring breaker having a heat radiation structure. More particularly, to a cover for a wiring breaker having a heat dissipation structure that is used for a wiring breaker to heat exchange between inside and outside air when the wiring breaker does not operate and to seal the inside of the wiring breaker when the wiring breaker operates.

Generally, a circuit breaker means an electric device that protects a load and a line by manually or automatically shutting off the line when an abnormality such as a line overload or a short circuit occurs.

Generally, in the case of a circuit breaker for wiring, the terminal part connecting the power source side and the load side, the opening and closing mechanism for opening and closing the contact between the fixed contact and the movable contact mechanically, and the abnormal current or fault current such as overcurrent, instantaneous current or short- A trip mechanism which is constructed by stacking a plurality of grids as a plate made of a ferromagnetic material between a pair of support plates to induce and extend an arc, and an opening / closing mechanism, a trip mechanism, And a housing portion formed of an upper cover and a lower cover (or a left cover and a right cover).

1 is a reference view of a conventional wiring breaker cover structure. Referring to FIG. 1, in the case of the conventional wiring breaker cover C, the arc barrier ab is provided at a position facing the front portion of the so-called mechanism ac mounted in the cover C, Is a circuit breaker that is folded outward at the arc extinguishing operation of the circuit breaker and emits an arc, which is a conductive substance in a high temperature plasma state generated in the arc in accordance with the arc extinguishing operation, to the outside.

However, in the case of the arc barrier ab performing the above-mentioned function, since it is provided in the form of a plate, there is a problem that heat exchange due to air circulation inside and outside of the circuit breaker is not performed when the circuit breaker is not operated.

Particularly, in case of the circuit breaker, there is a temperature rising test item for measuring the temperature of the product among the IEC (International Electrotechnical Commission Standard) test items. Therefore, it is necessary to prevent the temperature of each component of the circuit breaker from increasing excessively. Therefore, the necessity of heat exchange by air circulation inside and outside of the circuit breaker for wiring is required.

The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide an opening structure for a heat exchanger which is applied to a circuit breaker and can perform heat exchange by internal and external air circulation when the circuit breaker does not operate, And to provide a cover for a wiring breaker having a heat dissipation structure that forms a hermetically sealed structure so as to maintain constant internal pressure.

In order to achieve the above object, according to a preferred embodiment of the present invention, a cover for a wiring breaker having a heat radiating structure includes a body portion; A first sidewall portion and a second sidewall portion extending from one or both ends of the body portion; A first partition wall portion and a second partition wall portion spaced apart from each other between the first sidewall portion and the second sidewall portion; A plurality of first heat dissipation plates disposed on the surface of the substrate, between the first side wall portion and the first partition wall portion, between the first partition wall portion and the second partition wall portion, and between the second partition wall portion and the second side wall portion, A first heat radiating plate on which holes are formed; A second heat dissipation plate spaced apart from the first heat dissipation plate to the inside of the body and having a plurality of second heat dissipation holes formed on a surface thereof; And a folded portion provided between the first heat radiating plate and the second heat radiating plate, one side of which is coupled to the side surface of the second heat radiating plate and the other side of which is folded toward the center of the first heat radiating plate.

Further, the other side of the folded portion may contact with the rear portion of the first heat sink.

In addition, the second heat sink may move toward the rear side of the first heat sink when pressure is generated from the inside to the outside of the body.

The folded portion is folded by the pressure generated by the movement of the second heat radiating plate when pressure is generated from the inside to the outside of the body portion so that the front portion is in contact with the rear portion of the first heat radiating plate and the rear portion is in contact with the second heat radiating plate And can be brought into contact with the front portion.

Also, the first heat-dissipating hole and the second heat-dissipating hole may be formed so as not to face each other.

Further, the folded portion may be formed of a flexible material.

According to the present invention, when the wiring breaker is not operated, an open structure can be formed so that heat exchange can be performed by internal and external air circulation. When the wiring breaker operates, a sealing structure is formed to maintain the internal pressure for smooth operation of the wiring breaker It is possible to prevent excessive temperature rise of each component of the wiring breaker and to maintain the operation performance of the wiring breaker.

1 is a reference view of a conventional wiring breaker cover structure,
2 is a perspective view of a cover of a circuit breaker having a heat radiation structure according to a preferred embodiment of the present invention,
3 is a detailed view of the coupling structure of the first heat sink, the second heat sink, and the folded portion of Fig. 2, and Fig.
4 and 5 are reference views of the sealing structure of the first heat sink, the second heat sink, and the folded portion of FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Further, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be practiced by those skilled in the art.

2 is a perspective view of a cover of a wiring breaker having a heat radiation structure according to a preferred embodiment of the present invention.

2, a cover 10 of a circuit breaker having a heat radiation structure according to a preferred embodiment of the present invention includes a body portion 20, a first side wall portion 22, a second side wall portion 24, The first heat radiating plate 30, the second heat radiating plate 40, and the folding unit 50. The first heat radiating plate 30, the second heat radiating plate 40,

The body portion 20 is formed of an insulating material (for example, epoxy resin or the like), and is equipped with an opening / closing mechanism, a trip mechanism, and an SOHO mechanism (not shown). The body portion 20 includes a first side wall portion 22, The portion 24 is formed to extend from one end or the other end of the body 20.

The first partition wall portion 26 and the second partition wall portion 28 are spaced apart from each other between the first sidewall portion 22 and the second sidewall portion 24, The second partition wall portion 28 may be formed between the first side wall portion 22 and the second side wall portion 24 and the second partition wall portion 28 may be formed between the first partition wall portion 26 and the second side wall portion 24 .

The reason why the first and second partition walls 26 and 28 are formed in the above-described manner is that the insulation between the terminal portions (not shown) disposed on the terminal placement portions 29a, 29b, and 29c, respectively, So that it can be smoothly performed.

The first heat sink 30 is disposed between the first sidewall 22 and the first partition wall 26 and between the first partition wall 26 and the second partition wall 28 and between the second partition wall 28 and And second side wall portions 24, respectively.

At this time, the first heat sinks 30 may be spaced apart from the end portions of the terminal arrangements 29a, 29b, and 29c to the inside of the body 20, and a plurality of first heat dissipation holes 32 may be formed on the surface .

The second heat sinks 40 are spaced apart from the rear surface of the first heat sinks 30 and inside the body 20, and a plurality of second heat dissipation holes 42 are formed on the surface of the second heat sinks 40.

At this time, the first heat dissipating hole 32 and the second heat dissipating hole 42 are formed so as not to face each other (in other words, on the extension line from the first heat dissipating hole 32 to the second heat dissipating plate 40 side, The first heat dissipating hole 32 and the second heat dissipating hole 42 are formed as described above with reference to FIGS. 4 and 5. FIG.

The folded back portion 50 is provided between the first heat sink 30 and the second heat sink 40 and has one side joined to the side portion of the second heat sink 40 and the other side folded toward the center of the first heat sink 30 .

At this time, the other side of the folded portion 50 may be in contact with the rear portion of the first heat sink 40, and the folded portion 50 may be formed of a flexible material so as to be easily folded toward the center side of the first heat sink 30 .

The detailed structure of the first heat sink 30, the second heat sink 40, and the folded portion 50 will be described later with reference to FIG.

3 is a detailed view of a coupling structure of the first heat radiating plate, the second heat radiating plate, and the folding unit of FIG. 3 (a) and 3 (b), the first heat radiating plate 30 and the second heat radiating plate 40 are spaced apart from each other, and a first heat dissipating hole 32 and a second heat dissipating hole The air a1 inside the body part 20 is discharged to the outside of the body part 20 through the second heat dissipating hole 42 and the first heat dissipating hole 32, The outside air a2 can be introduced into the body portion 20 through the first heat dissipating hole 32 and the second heat dissipating hole 42. [

Therefore, when the cover 10 of the present invention is applied to a circuit breaker for wiring, heat exchange due to air circulation inside and outside the circuit breaker by the air circulation path generated by the first heat dissipating hole 32 and the second heat dissipating hole 42 (For example, an opening / closing mechanism, a trip mechanism, and an SOHO mechanism) disposed inside the circuit breaker can be prevented from being excessively increased.

In the case of the circuit breaker to which the cover 10 of the present invention is applied, heat exchange is performed in accordance with the air circulation inside and outside of the circuit breaker by the above-described structure. However, when the circuit breaker is overcurrent, instantaneous current, The first heat radiating plate 30, the second heat radiating plate 40, and the folding and unfolding portions 40, 50, and 50 by the pressure generated in the interrupter for wiring when operating by the occurrence of an abnormal current or fault current, (50) can form a closed structure, which will be described below with reference to FIGS. 4 and 5.

4 and 5 are reference views of the sealing structure of the first heat sink, the second heat sink, and the folded portion of FIG.

4, when the circuit breaker to which the cover 10 of the present invention is applied operates in response to an abnormal current or an accident current such as an overcurrent, an instantaneous current, a short circuit current, or the like, it is generated from the inside to the outside of the body portion 20 The second heat radiating plate 40 is moved toward the first heat radiating plate 30 side.

The folded portion 50 is folded by the pressing of the second heat sink 40 according to the movement so as to come into contact with the first heat sink 30 and the second heat sink 40. In other words, The front portion of the attachment 50 may be in contact with the rear portion of the first heat sink 30 and the rear portion of the fold 50 may be in contact with the front portion of the second heat sink 40.)

5 (a) and 5 (b), the first heat dissipating hole 32 and the second heat dissipating hole 42 are formed so as not to face each other (in other words, do not overlap each other) The first heat sink 30, the second heat sink 40, and the folded portion 50 can form a closed structure.

Accordingly, in the case of the circuit breaker to which the cover 10 of the present invention is applied, a sufficient internal pressure to smoothly perform the arc extinguishing operation can be maintained, and when the internal pressure is lowered after the arc extinguishing operation, The second heat sinks 40 are spaced apart from each other so that the arc generated during the arc extinguishing operation can be discharged to the outside, and the internal heat exchanger 40, which is heated by the arc extinguishing operation, It is possible to maintain the temperature of the heat source at a certain level.

It will be apparent to those skilled in the art that various modifications, changes, and substitutions can be made hereto without departing from the spirit and scope of the present invention as defined by the following claims. Will be possible. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is limited by these embodiments and the accompanying drawings no. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

(10): Circuit breaker cover (20) for a wiring board:
(22): first side wall portion (24): second side wall portion
(26): first partition wall portion (28): second partition wall portion
(30): first heat sink (32): first heat sink
(40): second heat sink (42): second heat dissipation hole
(50)

Claims (6)

In the cover of the circuit breaker,
A body portion;
A first sidewall portion and a second sidewall portion extending from one or both ends of the body portion;
A first partition wall portion and a second partition wall portion spaced apart from each other between the first sidewall portion and the second sidewall portion;
A plurality of first heat dissipation plates disposed on the surface of the substrate, between the first side wall portion and the first partition wall portion, between the first partition wall portion and the second partition wall portion, and between the second partition wall portion and the second side wall portion, A first heat radiating plate on which holes are formed;
A second heat dissipation plate spaced apart from the first heat dissipation plate to the inside of the body and having a plurality of second heat dissipation holes formed on a surface thereof; And
And a folded portion provided between the first heat radiating plate and the second heat radiating plate, one side of which is coupled to the side surface of the second heat sink, and the other side of which is folded toward the center of the first heat radiating plate. Cover of circuit breaker. The method according to claim 1,
And the other side of the folded portion is in contact with the rear portion of the first heat sink. The method according to claim 1,
Wherein the second heat sink moves toward the rear side of the first heat sink when a pressure is generated from the inside to the outside of the body part. The method of claim 3,
The folded portion is folded by the pressure generated by the movement of the second heat radiating plate when pressure is generated from the inside to the outside of the body portion so that the front portion is in contact with the rear portion of the first heat radiating plate and the rear portion is in contact with the front surface of the second heat radiating plate And the cover is in contact with the cover. The method according to claim 1,
Wherein the first heat-dissipating hole and the second heat-dissipating hole are formed so as not to face each other. The method according to claim 1,
Wherein the folded portion is formed of a flexible material.
KR1020150045692A 2015-03-31 2015-03-31 Cover of mccb with radiant heat structure KR101981597B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150045692A KR101981597B1 (en) 2015-03-31 2015-03-31 Cover of mccb with radiant heat structure

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Application Number Priority Date Filing Date Title
KR1020150045692A KR101981597B1 (en) 2015-03-31 2015-03-31 Cover of mccb with radiant heat structure

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KR20160117072A true KR20160117072A (en) 2016-10-10
KR101981597B1 KR101981597B1 (en) 2019-05-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109273330A (en) * 2018-11-16 2019-01-25 加西亚电子电器股份有限公司 A kind of double-contact breaker
CN110310861A (en) * 2018-03-20 2019-10-08 株式会社东芝 Gas circuit breaker

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62206723A (en) * 1986-03-05 1987-09-11 富士電機株式会社 Arc extinguishing chamber of dc breaker
KR100832328B1 (en) * 2006-12-29 2008-05-26 엘에스산전 주식회사 Arc-suppression appratus of circuit breaker
KR20100113977A (en) * 2009-04-14 2010-10-22 후지 덴키 기기세이교 가부시끼가이샤 Circuit breaker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62206723A (en) * 1986-03-05 1987-09-11 富士電機株式会社 Arc extinguishing chamber of dc breaker
KR100832328B1 (en) * 2006-12-29 2008-05-26 엘에스산전 주식회사 Arc-suppression appratus of circuit breaker
KR20100113977A (en) * 2009-04-14 2010-10-22 후지 덴키 기기세이교 가부시끼가이샤 Circuit breaker

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110310861A (en) * 2018-03-20 2019-10-08 株式会社东芝 Gas circuit breaker
CN110310861B (en) * 2018-03-20 2021-04-20 株式会社东芝 Gas circuit breaker
CN109273330A (en) * 2018-11-16 2019-01-25 加西亚电子电器股份有限公司 A kind of double-contact breaker
CN109273330B (en) * 2018-11-16 2024-01-30 加西亚电子电器股份有限公司 Double-contact breaker

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