Novel arc extinguishing device of DC molded case circuit breaker
By using heat conduction plates, heat dissipation fins and heat dissipation grooves in the arc extinguishing device of the DC plastic shell circuit breaker, the problem of inconvenient heat discharge during the arc extinguishing process is solved, and a better heat dissipation effect is achieved.
Patent Information
- Application Number
- CN202420447648.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-08
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-03-08
AI Technical Summary
The existing DC plastic shell circuit breaker arc extinguishing cover generates a lot of heat during the arc extinguishing process, but is not convenient to discharge, resulting in poor heat dissipation effect.
A new type of arc extinguishing device for arc extinguishing devices of DC plastic shell circuit breakers is designed, using heat conduction plates, heat dissipation fins, heat dissipation grooves and other structures to increase the contact area between arc extinguishing plastic parts and air, and improve thermal conductivity to more effectively dissipate heat. .
By increasing the contact area and improving thermal conductivity, the DC plastic shell circuit breaker arc-extinguishing cover is achieved better heat dissipation effect during arc extinguishing, and the problem of inconvenient heat discharge in the prior art is solved.
Smart Images
Figure CN222507514U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of arc extinguishing covers of molded case circuit breakers, in particular to a novel arc extinguishing device for a DC molded case circuit breaker. Background Art
[0002] DC molded case circuit breakers have long-delay overload protection and short-circuit instantaneous protection functions, which are used to distribute electrical energy and protect lines and power equipment from overload and short circuit. At present, arc extinguishing hoods are installed inside DC molded case circuit breakers, and the existing arc extinguishing hoods will generate a lot of heat during the arc extinguishing process, which is not convenient to discharge.
[0003] Therefore, a new type of DC molded case circuit breaker arc extinguishing device is needed to improve the above problems. Utility Model Content
[0004] The purpose of the utility model is to provide a novel arc extinguishing device for DC molded case circuit breaker to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A novel arc extinguishing device for a DC molded case circuit breaker comprises an upper arc extinguishing cover, a left cover plate is arranged on the lower left side of the upper arc extinguishing cover, a right cover plate is arranged on the lower right side of the upper arc extinguishing cover, arc extinguishing plastic parts are arranged on the inner sides of the left cover plate and the right cover plate, mounting grooves are evenly arranged on the inner sides of the tops of the arc extinguishing plastic parts, arc extinguishing grids are installed inside the mounting grooves, a heat conducting plate is arranged below the inner side of the arc extinguishing plastic parts, heat dissipation grooves are arranged on the left and right sides of the front side of the arc extinguishing plastic parts, heat dissipation fins are arranged on the outer side of the heat conducting plate, a heat dissipation through hole is arranged on the top of the upper arc extinguishing cover, and fixing parts are arranged on the outer sides of the left cover plate and the right cover plate.
[0007] As a preferred solution of the utility model, the outer shape structure of the upper arc-extinguishing cover is an arched structure design, and the upper arc-extinguishing cover, the left cover plate and the right cover plate are an integrated structure design.
[0008] As a preferred solution of the utility model, the arc-extinguishing grid is connected to the arc-extinguishing plastic part in a sliding plug-in structure through a mounting groove.
[0009] As a preferred solution of the utility model, the heat conducting plate is made of heat conducting metal material, and the arc extinguishing plastic part is made of heat resistant plastic material.
[0010] As a preferred solution of the utility model, the heat dissipation fins penetrate the arc-extinguishing plastic part and extend to the interior of the heat dissipation groove.
[0011] As a preferred solution of the utility model, the fixing piece passes through the left cover plate and the right cover plate, and the connection between the fixing piece and the arc-extinguishing plastic piece is a threaded connection.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. In the utility model, the heat conducting plate, the heat dissipating fins and the heat dissipating grooves are arranged to increase the contact area between the arc-extinguishing plastic part and the air and the thermal conductivity of the arc-extinguishing plastic part, thereby making the arc-extinguishing cover of the DC molded case circuit breaker have a better heat dissipation effect when the arc is extinguished. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 It is a partial structural schematic diagram of the utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the arc-extinguishing plastic component of the utility model.
[0017] In the figure: 1. upper arc-extinguishing cover; 2. left cover plate; 3. right cover plate; 4. arc-extinguishing plastic part; 5. mounting groove; 6. arc-extinguishing grid; 7. heat conduction plate; 8. heat dissipation groove; 9. heat dissipation fins; 10. heat dissipation through hole; 11. fixing part. DETAILED DESCRIPTION
[0018] The following will be combined with the embodiments of the present utility model to clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present utility model. The following will be combined with the embodiments of the present utility model to clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present utility model.
[0019] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[0020] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.
[0022] See also Figure 1-3 , the utility model provides a technical solution:
[0023] A novel arc extinguishing device for DC molded case circuit breaker comprises an upper arc extinguishing cover 1, a left cover plate 2 is arranged on the lower left side of the upper arc extinguishing cover 1, a right cover plate 3 is arranged on the lower right side of the upper arc extinguishing cover 1, arc extinguishing plastic parts 4 are arranged on the inner sides of the left cover plate 2 and the right cover plate 3, mounting grooves 5 are evenly arranged on the inner sides of the tops of the arc extinguishing plastic parts 4, arc extinguishing grids 6 are installed inside the mounting grooves 5, heat conducting plates 7 are arranged below the inner sides of the arc extinguishing plastic parts 4, heat dissipation grooves 8 are arranged on the left and right sides of the front of the arc extinguishing plastic parts 4, heat dissipation fins 9 are arranged on the outer sides of the heat conducting plates 7, heat dissipation holes 10 are arranged on the top of the upper arc extinguishing cover 1, and fixing parts 11 are arranged on the outer sides of the left cover plate 2 and the right cover plate 3.
[0024] In this embodiment, the outer structure of the upper arc-extinguishing cover 1 is an arched structure design, and the upper arc-extinguishing cover 1, the left cover plate 2, and the right cover plate 3 are of an integrated structure design. The arc-extinguishing grid 6 is connected to the arc-extinguishing plastic part 4 in a sliding plug-in structure through the mounting groove 5, so as to facilitate the installation of the arc-extinguishing grid 6. The heat conducting plate 7 is made of a heat-conducting metal material, and the arc-extinguishing plastic part 4 is made of a heat-resistant plastic material, so as to increase the thermal conductivity and heat resistance of the arc-extinguishing device as a whole. The heat dissipation fins 9 penetrate the arc-extinguishing plastic part 4 and extend to the inner part of the heat dissipation groove 8. The part is convenient for pouring heat into the heat dissipation groove 8 and dissipating the heat. The fixing part 11 passes through the left cover plate 2 and the right cover plate 3, and the connection mode of the fixing part 11 and the arc-extinguishing plastic part 4 is a threaded connection, so as to facilitate the installation and disassembly of the arc-extinguishing plastic part 4. The heat conducting plate 7, the heat dissipation fins 9 and the heat dissipation groove 8 are arranged to increase the contact area between the arc-extinguishing plastic part 4 and the air and increase the thermal conductivity of the arc-extinguishing plastic part 4, so that the arc-extinguishing cover of the DC molded case circuit breaker can have a better heat dissipation effect when the arc is extinguished.
[0025] The working process of the utility model is as follows: first, the arc extinguishing hood is installed in the DC molded case circuit breaker. When the arc extinguishing hood is extinguishing the arc, the heat generated in the arc extinguishing hood will be poured into the heat dissipation groove 8 through the heat conduction plate 7 and the heat dissipation fins 9, and then discharged to the outside of the hood through the heat dissipation groove 8. At this time, the heat dissipation of the arc extinguishing hood is completed. The heat conduction plate 7, the heat dissipation fins 9 and the heat dissipation groove 8 are arranged to increase the contact area between the arc extinguishing plastic part 4 and the air and increase the thermal conductivity of the arc extinguishing plastic part 4, so that the arc extinguishing hood of the DC molded case circuit breaker can have a better heat dissipation effect when the arc extinguishing hood is extinguishing the arc.
[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A novel arc extinguishing device for a DC molded case circuit breaker, comprising an upper arc extinguishing cover (1), characterized in that: A left cover plate (2) is arranged on the lower left side of the upper arc-extinguishing cover (1), a right cover plate (3) is arranged on the lower right side of the upper arc-extinguishing cover (1), arc-extinguishing plastic parts (4) are arranged on the inner sides of the left cover plate (2) and the right cover plate (3), mounting grooves (5) are evenly arranged on the inner sides of the tops of the arc-extinguishing plastic parts (4), arc-extinguishing grids (6) are installed inside the mounting grooves (5), a heat conduction plate (7) is arranged below the inner side of the arc-extinguishing plastic parts (4), heat dissipation grooves (8) are arranged on the left and right sides of the front side of the arc-extinguishing plastic parts (4), heat dissipation fins (9) are arranged on the outer sides of the heat conduction plates (7), a heat dissipation through hole (10) is arranged on the top of the upper arc-extinguishing cover (1), and fixing parts (11) are arranged on the outer sides of the left cover plate (2) and the right cover plate (3).
2. The novel arc extinguishing device for DC molded case circuit breaker according to claim 1 is characterized in that: The outer structure of the upper arc-extinguishing cover (1) is an arched structure, and the upper arc-extinguishing cover (1), the left cover plate (2) and the right cover plate (3) are an integrated structure.
3. The novel arc extinguishing device for DC molded case circuit breaker according to claim 1 is characterized in that: The arc-extinguishing grid (6) is connected to the arc-extinguishing plastic part (4) in a sliding plug-in structure via the mounting groove (5).
4. The novel arc extinguishing device for DC molded case circuit breaker according to claim 1 is characterized in that: The heat conducting plate (7) is made of a heat conducting metal material, and the arc extinguishing plastic part (4) is made of a heat resistant plastic material.
5. The novel arc extinguishing device for DC molded case circuit breaker according to claim 1 is characterized in that: The heat dissipation fins (9) penetrate the arc-extinguishing plastic part (4) and extend to the interior of the heat dissipation groove (8).
6. The novel arc extinguishing device for DC molded case circuit breaker according to claim 1 is characterized in that: The fixing member (11) passes through the left cover plate (2) and the right cover plate (3), and the fixing member (11) is connected to the arc-extinguishing plastic member (4) by threaded connection.