CN216487939U - Modular arc extinguishing system and circuit breaker - Google Patents

Abstract

The application provides a modularization arc extinguishing system and circuit breaker belongs to low-voltage apparatus technical field, including the arc extinguishing seat, it has exhaust passage forming structure, explosion chamber and striking subassembly to integrate in proper order on the arc extinguishing seat, the explosion chamber with exhaust passage forming structure intercommunication, through the striking subassembly introduces electric arc the explosion chamber arc extinguishing to the gas that will produce by exhaust passage forming structure discharges. Through with exhaust passage forming structure, explosion chamber and striking subassembly integration on the arc extinguishing seat to form modularization arc extinguishing system, and through the arc extinguishing seat with modularization arc extinguishing system installation in the shell base of circuit breaker, with the modularization installation that realizes the arc extinguishing system, when the circuit breaker is installed like this, as the turnover of a holistic modularization arc extinguishing system assembly process of being convenient for, can effectively improve the flexibility and the productivity effect of circuit breaker manufacturing, assembly.

Description

Modular arc extinguishing system and circuit breaker

Technical Field

The application relates to the technical field of low-voltage apparatuses, in particular to a modularized arc extinguishing system and a circuit breaker.

Background

The circuit breaker generally comprises a contact system, an arc extinguishing system, an operating mechanism, a release, a shell and the like, wherein the arc extinguishing system has the function that when the power supply voltage exceeds dozens of volts and the breaking current is more than dozens of amperes, measures for enhancing the arc extinguishing capability are generally needed to reduce the burning loss of the arc to the contact and limit the space for the arc expansion, and an arc extinguishing device is adopted for the purpose, or is called the arc extinguishing system. The arc extinguishing system generally comprises an arc extinguishing chamber, a magnetic conductive sheet, an arc isolating plate, an arc angle, an adjusting screw assembly and an arc extinguishing exhaust channel forming structure, and in the existing circuit breaker, the parts or the assemblies are all installed on a shell base of the circuit breaker, so that the requirement on the manufacturability of product assembly is high, each assembly is independently assembled, and the turnover is poor.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide a modularization arc extinguishing system and circuit breaker, realizes the modularization installation of arc extinguishing system, and the flexibility of manufacturing is improved in the turnover of the assembly process of being convenient for.

The embodiment of the application is realized as follows:

an aspect of the embodiment of the application provides a modularization arc extinguishing system, and it includes the seat of extinguishing sparks, it has exhaust passage forming structure, explosion chamber and striking subassembly to integrate in proper order on the seat of extinguishing sparks, the explosion chamber with exhaust passage forming structure intercommunication, through the striking subassembly introduces electric arc the explosion chamber arc extinguishing to the gas that will produce by exhaust passage forming structure discharges.

Optionally, an arc extinguishing chamber is formed at an end of the arc extinguishing seat far away from the exhaust passage forming structure, the arc extinguishing chamber is provided with a first cavity opening, and the arc extinguishing chamber is arranged in the arc extinguishing chamber through the first cavity opening.

Optionally, the arc striking assembly includes two arc barriers oppositely disposed on the arc chute, each arc barrier has a cavity, and a magnetic conductive plate is disposed in the cavity.

Optionally, the arc extinguishing chamber further has a second cavity opening opposite to the first cavity opening in direction, the cavity is communicated with the second cavity opening, and the arc striking assembly is disposed in the arc extinguishing chamber through the second cavity opening.

Optionally, the exhaust duct forming structure is formed on a side wall of the arc extinguishing seat, a plurality of guide plates are arranged on the side wall, one end of each of the plurality of guide plates is arranged on the side wall, the other end of each of the plurality of guide plates extends to the center of the side wall, and the plurality of guide plates extend to the position between the end of the center of the side wall and the guide plate to form the exhaust duct forming structure.

Optionally, a plurality of the guide plates include a plurality of first guide plates arranged perpendicular to the exhaust direction, and at least one second guide plate arranged parallel to the exhaust direction, the plurality of first guide plates are arranged on two sides of the side wall of the arc extinguishing seat in an opposite and staggered manner, at least one second guide plate is arranged close to the arc extinguishing chamber, and gas generated by the arc extinguishing chamber is exhausted through the exhaust passage forming structure formed by the at least one second guide plate and the plurality of first guide plates in sequence.

Optionally, the arc striking assembly further comprises an arc angle plate arranged above the arc extinguishing chamber along the direction of the second cavity, a clamping groove is formed in the arc extinguishing seat, and one end of the arc angle plate is arranged in the clamping groove.

Optionally, the arc corner plate includes a first flat plate, a second flat plate, and a connecting plate connecting the first flat plate and the second flat plate, the first flat plate and the second flat plate extend in opposite directions, a height difference exists between the first flat plate and the second flat plate, the second flat plate is disposed in the slot, and the first flat plate extends in a direction away from the arc extinguish chamber.

Optionally, a boss is arranged on the arc extinguishing seat, the boss is provided with a U-shaped groove, an adjusting screw for adjusting the position between the bimetal and the operating mechanism is arranged in the U-shaped groove, and the end of the adjusting screw corresponds to a hole arranged on the first flat plate; and the arc extinguishing seat is provided with convex ribs on the opposite sides of the clamping grooves, the first flat plate is positioned above the convex ribs, and the convex ribs are used for supporting the first flat plate of the arc angle plate when the adjusting screws act.

Another aspect of the embodiments of the present application provides a circuit breaker, which includes a housing base, and a contact system and the above-mentioned modular arc extinguishing system disposed in the housing base, wherein the arc striking component of the modular arc extinguishing system corresponds to the movable contact system.

Optionally, a plurality of the modularized arc extinguishing systems are arranged in the housing base, and the modularized arc extinguishing systems are arranged side by side in a direction perpendicular to the exhaust direction.

The beneficial effects of the embodiment of the application include:

the modularized arc extinguishing system and the circuit breaker provided by the embodiment of the application integrate an exhaust passage forming structure, an arc extinguishing chamber and an arc striking component on an arc extinguishing seat, wherein the arc extinguishing chamber is communicated with the exhaust passage forming structure, the arc striking component introduces electric arc generated between a moving contact and a static contact into the arc extinguishing chamber, the electric arc is extinguished in the arc extinguishing chamber and generates gas, and the gas enters the exhaust passage forming structure through the arc extinguishing chamber and is exhausted. Through with exhaust passage forming structure, explosion chamber and striking subassembly integration on the arc extinguishing seat to form modularization arc extinguishing system, and through the arc extinguishing seat with modularization arc extinguishing system installation in the shell base of circuit breaker, with the modularization installation that realizes the arc extinguishing system, like this when the circuit breaker is installed, as the turnover of a holistic modularization arc extinguishing system installation and assembly process of being convenient for, can effectively improve the flexibility and the productivity effect of circuit breaker manufacturing, assembly.

The circuit breaker comprises a shell base, a contact system arranged in the shell base and the modularized arc extinguishing system, wherein an arc striking assembly of the modularized arc extinguishing system corresponds to a moving contact system. The modularized arc extinguishing system is arranged in the shell base, other breaker components such as a contact system are further arranged, the contact system comprises a moving contact and a fixed contact, the positions of the contact system and the arc striking component correspond to each other, electric arcs generated by the moving contact and the fixed contact are led into the arc extinguishing chamber through the arc striking component to extinguish the arc, and gas generated by arc extinguishing is exhausted from an exhaust channel forming structure of the modularized arc extinguishing system. Through the modularization arc extinguishing system, can realize the modularization installation, the turnover of the circuit breaker assembly process of being convenient for improves the flexibility and the productivity effect of circuit breaker assembly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a modular arc extinguishing system according to an embodiment of the present disclosure;

fig. 2 is a second schematic structural diagram of a modular arc extinguishing system according to an embodiment of the present application;

fig. 3 is a schematic view of an arc horn plate structure of the modular arc extinguishing system according to the embodiment of the present application;

fig. 4 is a partial structural schematic diagram of a modular arc extinguishing system according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a circuit breaker according to an embodiment of the present application.

100-modular arc extinguishing system; 101-arc extinguishing seat; 102-an exhaust duct forming structure; 1021-a guide plate; 1021 a-a first guide plate; 1021 b-a second guide plate; 1022-an inclined wall; 103-an arc extinguishing chamber; 1031-first orifice; 1032-a second port; 1033-a third port; 104-an arc-isolating plate; 105-a magnetically permeable plate; 106-arc corner plate; 1061-a first plate; 1062-second plate; 1063-connecting plate; 1064-hole; 107-card slot; 108-adjusting screws; 109-a boss; 1091-a U-shaped groove; 110-convex ribs; 200-a housing base; 201-a chamber; f-exhaust direction.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In an arc extinguishing system of the circuit breaker, an arc extinguishing chamber, a magnetic conductive sheet, an arc isolating plate, an arc angle, an adjusting screw assembly and an arc extinguishing exhaust channel forming structure are generally arranged on a base of a shell of the circuit breaker, the manufacturability of the assembly of the circuit breaker is high, and the turnover of the assembly is poor.

In order to solve the above problems, embodiments of the present application provide a modular arc extinguishing system 100, which realizes modular installation of the arc extinguishing system, facilitates turnover of an assembly process, and improves flexibility of manufacturability.

Specifically, referring to fig. 1, an embodiment of the present application provides a modular arc extinguishing system 100, which includes an arc extinguishing seat 101, wherein an exhaust duct forming structure 102, an arc extinguishing chamber 103, and an arc striking assembly are sequentially integrated on the arc extinguishing seat 101, the arc extinguishing chamber 103 is communicated with the exhaust duct forming structure 102, an arc is introduced into the arc extinguishing chamber 103 through the arc striking assembly, and a generated gas is exhausted from the exhaust duct forming structure 102.

This application is integrated on arc extinguishing seat 101 with exhaust passage forming structure 102, explosion chamber 103 and striking subassembly, forms modularization arc extinguishing system 100, and rethread arc extinguishing seat 101 is installed modularization arc extinguishing system 100 wholly in the shell base 200 of circuit breaker, realizes the modularization installation of arc extinguishing system.

Illustratively, the arc chute 101 serves as a carrier for the arc extinguishing system integration, in this case a profiled structure, the arc chute 101 having a side wall and two end portions; the arc extinguishing chamber 103 and the arc striking component are arranged at one end part, and the exhaust passage forming structure 102 is arranged on the side wall and extends to the other end part; along the exhaust direction F of the exhaust passage forming structure 102, the end parts of the arc extinguishing chamber 103 and the arc striking component are arranged in front of the front end of the exhaust passage forming structure 102, the arc extinguishing chamber 103 is communicated with the front end of the exhaust passage forming structure 102, the end part of the exhaust passage forming structure 102 extending can be understood as the rear end of the exhaust passage forming structure 102, electric arcs generated between the moving contact and the static contact are introduced into the arc extinguishing chamber 103 through the arc striking component arranged at the end part of the arc extinguishing seat 101, arc is extinguished in the arc extinguishing chamber 103, generated gas is exhausted from the other end part of the arc extinguishing seat 101 through the exhaust passage forming structure 102 communicated with the arc extinguishing chamber 103, in other words, the gas enters the exhaust passage forming structure 102 from the front end of the exhaust passage forming structure 102 and is exhausted from the rear end of the exhaust passage forming structure 102.

To sum up, the modularized arc extinguishing system 100 provided in the embodiment of the present application integrates the exhaust duct forming structure 102, the arc extinguishing chamber 103, and the arc striking component on the arc extinguishing seat 101, wherein the arc extinguishing chamber 103 is communicated with the exhaust duct forming structure 102, the arc striking component introduces the electric arc generated between the moving contact and the static contact into the arc extinguishing chamber 103, the electric arc is extinguished in the arc extinguishing chamber 103 and generates gas, and the gas enters the exhaust duct forming structure 102 through the arc extinguishing chamber 103 and is exhausted. Through with exhaust passage forming structure 102, explosion chamber 103 and striking subassembly integration on arc extinguishing seat 101 to form modularization arc extinguishing system 100, and install modularization arc extinguishing system 100 in the shell base 200 of circuit breaker through arc extinguishing seat 101, with the modularization installation that realizes the arc extinguishing system, like this when the circuit breaker is installed, as the turnover of the modular arc extinguishing system 100 of a whole assembly process of being convenient for, can effectively improve the flexibility and the productivity effect of circuit breaker manufacturing, assembly.

Further, as shown in fig. 2, an arc extinguishing chamber is formed at an end of the arc extinguishing seat 101 away from the exhaust passage forming structure 102, the arc extinguishing chamber has a first chamber opening 1031, and the arc extinguishing chamber 103 is disposed in the arc extinguishing chamber through the first chamber opening 1031.

In an implementation manner of the present application, the exhaust duct forming structure 102 is located on a sidewall of the arc extinguishing seat 101, the sidewall is located between and connected to two ends of the arc extinguishing seat 101, the exhaust duct forming structure 102 extends to one end, and the other end is far away from the exhaust duct forming structure 102; the end part far away from the exhaust passage forming structure 102 forms an arc extinguishing chamber, the arc extinguishing chamber is a semi-closed chamber and is provided with a plurality of chamber openings capable of being communicated with the outside, the arc extinguishing chamber comprises a first chamber opening 1031, and the arc extinguishing chamber 103 enters the arc extinguishing chamber through the first chamber opening 1031 and is installed in the arc extinguishing chamber.

Illustratively, the first cavity opening 1031 is located at the bottom of the arc extinguishing seat 101, the arc extinguishing chamber 103 is embedded into the bottom of the arc extinguishing chamber at the front end of the exhaust passage forming structure 102, the side wall of the exhaust passage forming structure 102 is arranged to be bent at the front end of the exhaust passage forming structure 102 to form an inclined wall 1022, the inclined wall 1022 is an inner wall of the arc extinguishing chamber, the arc extinguishing chamber 103 is located at the inclined wall 1022 to form a gap with the inclined wall 1022, the gap is an air leakage passage, the air leakage passage enables the arc extinguishing chamber 103 to be communicated with the exhaust passage forming structure 102, and air enters the front end of the exhaust passage forming structure 102 through the air leakage passage and is exhausted through the exhaust passage forming structure 102. The space for communicating the arc extinguish chamber 103 with the exhaust passage forming structure 102 is enlarged by the inclined wall 1022, so that the generated gas can be exhausted from the exhaust passage forming structure 102 in time, and is prevented from being accumulated in the arc extinguish chamber.

The arc striking component comprises two arc isolating plates 104 which are oppositely arranged on the arc extinguishing seat 101, the arc isolating plates 104 are provided with cavities, and magnetic conductive plates 105 are arranged in the cavities.

The two arc barriers 104 are arranged oppositely, a magnetic conduction plate 105 is arranged in the cavity of each arc barrier 104, and the arc generated by the moving contact and the static contact can be introduced into the arc extinguish chamber 103 by generating a magnetic field through the arc barriers 104 and the magnetic conduction plates 105.

The arc extinguishing chamber is communicated with a plurality of external chamber openings, and includes a second chamber opening 1032 and a third chamber opening 1033 in addition to the first chamber opening 1031 for being embedded into the arc extinguishing chamber 103, for example, the first chamber opening 1031 is located at the bottom of the arc extinguishing chamber, the direction of the first chamber opening 1031 is perpendicular to the direction of the third chamber opening 1033, which means that the entering direction of the chamber openings is perpendicular, for example, in fig. 2, the arc extinguishing chamber 103 is embedded into the arc extinguishing chamber from the first chamber opening 1031 at the bottom of the arc extinguishing chamber from bottom to top, the third chamber opening 1033 is located at the right side of the arc extinguishing chamber, the arc isolating plate 104 and the magnetic conducting plate 105 are located at the third chamber opening 1033, the front end of the arc extinguishing chamber 103 faces the third chamber opening 1033, and the arc generated by the moving contact and the static contact can be introduced into the arc extinguishing chamber from the third chamber opening 1033 at the right side of the arc extinguishing chamber to left, and then enters the arc extinguishing chamber 103.

And, the arc extinguishing chamber still has the second chamber mouth 1032 with first chamber mouth 1031 opposite direction, and the cavity communicates with second chamber mouth 1032, and the arc baffle subassembly that arc baffle 104 and magnetic conduction board 105 formed is set up in the arc extinguishing chamber by second chamber mouth 1032.

The direction of the second cavity 1032 is opposite to the direction of the first cavity 1031, the arc extinguishing chamber 103 is embedded into the arc extinguishing chamber from the bottom to the top from the first cavity 1031 at the bottom of the arc extinguishing chamber in fig. 2, the second cavity 1032 is located at the top of the arc extinguishing chamber in fig. 1, and the arc extinguishing chamber is embedded into the arc extinguishing chamber from the top to the bottom from the second cavity 1032 at the top of the arc extinguishing chamber after the arc isolating plate 104 and the magnetic conductive plate 105 are assembled.

For the exhaust duct forming structure 102, the exhaust duct forming structure 102 is formed on a side wall of the arc extinguishing seat 101, a plurality of guide plates 1021 are arranged on the side wall, one end of each guide plate 1021 is arranged on the side wall, the other end of each guide plate 1021 extends to the center of the side wall, and the end parts of the plurality of guide plates 1021 extending to the center of the side wall are communicated to form the exhaust duct forming structure 102.

The plurality of guide plates 1021 on the side wall form an exhaust passage forming structure 102, for example, one end of the guide plate 1021 is flush with the edge of the side wall, and the other end of the guide plate 1021 extends toward the center of the side wall, so that one end of the plurality of guide plates 1021 extending toward the center of the side wall forms an exhaust passage forming structure 102, and gas generated by the arc extinguishing chamber 103 is exhausted from the exhaust passage forming structure 102.

In an implementation manner of the present application, the plurality of guide plates 1021 includes a plurality of first guide plates 1021a disposed perpendicular to the exhaust direction F, and at least one second guide plate 1021b disposed parallel to the exhaust direction F, the plurality of first guide plates 1021a are disposed opposite to and staggered on two sides of the sidewall of the arc extinguishing chamber 101, the at least one second guide plate 1021b is disposed near the arc extinguishing chamber 103, and the gas generated by the arc extinguishing chamber 103 is exhausted through the exhaust duct forming structure 102 formed by the at least one second guide plate 1021b and the plurality of first guide plates 1021a in sequence.

The guide plate 1021 is divided into a first guide plate 1021a and a second guide plate 1021b according to the arrangement direction, wherein the first guide plate 1021a is arranged perpendicular to the exhaust direction F, and the second guide plate 1021b is arranged parallel to the exhaust direction F; illustratively, four first guide plates 1021a are provided, one second guide plate 1021b is provided, the second guide plate 1021b is arranged at the front end of the exhaust passage forming structure 102 and is used for guiding the gas generated by the arc extinguish chamber 103 into the exhaust passage forming structure 102, the four first guide plates 1021a are opposite in pairs and staggered on two sides of the side wall, the end parts of the first guide plates 1021a and the second guide plates 1021b extend towards the center of the side wall, so that the exhaust passage forming structure 102 is formed between the end part of the guide plate 1021 extending towards the center of the side wall and the guide plate 1021; the end of the guide plate 1021 extending to the center of the sidewall may exceed the center of the sidewall or fall short of the center of the sidewall, so that the exhaust passage forming structure 102 may form a serpentine shape, so that a curved path is formed when the gas flows along the exhaust passage forming structure 102, and compared with a straight path, the pressure at each position of the curved exhaust path is different, so as to accelerate the flow speed of the gas, and the size of the front end of the exhaust passage forming structure 102 is larger than that of the rear end of the exhaust passage forming structure 102, so that the exhaust passage forming structure 102 forms a structure with a large inlet and a small outlet, so that a large amount of gas flows in from the front end of the exhaust passage forming structure 102, and the gas in the exhaust passage forming structure 102 is extruded to the rear end of the exhaust passage forming structure 102, so that the gas is rapidly extruded out of the exhaust passage forming structure 102, and the exhaust speed is also increased. The gas entering from the second guide plate 1021b at the front end of the exhaust passage forming structure 102 flows along the four first guide plates 1021a in sequence to the end part of the center of the sidewall, and is exhausted from the rear end of the exhaust passage forming structure 102.

One path for the exhaust gases is shown in FIG. 1, with the gases entering the exhaust passage forming structure 102 from above the second guide plate 1021b, exhausting in the direction of the dotted line with arrows in FIG. 1; the gas may also enter the exhaust passage forming structure 102 from below the second guide plate 1021b and be exhausted in the exhaust direction F.

Of course, the number of the first guide plate 1021a and the second guide plate 1021b is not limited to the above, and may be set according to specific requirements, and the present application is not particularly limited thereto.

On the other hand, the arc striking assembly further comprises an arc angle plate 106 arranged above the arc extinguishing chamber 103 along the direction of the second cavity 1032, a clamping groove 107 is formed on the arc extinguishing chamber 101, and one end of the arc angle plate 106 is arranged in the clamping groove 107.

The arc angle plate 106 functions as an arc striking assembly in addition to the arc separation plate 104 and the magnetic conduction plate 105, and also functions as an arc striking member. The arc angle plate 106 is positioned above the arc extinguish chamber 103, the arc extinguish seat 101 is provided with a clamping groove 107, one end of the arc angle plate 106 is arranged in the clamping groove 107, the arc angle plate 106 generates a magnetic field, the magnetic field effect of the arc extinguish chamber is enhanced, and the arc generated by the moving contact and the fixed contact is introduced into the arc extinguish chamber 103 under the combined action of the arc isolating plate 104 and the magnetic conduction plate 105.

Besides, the arc angle plate 106 has a function of supporting bimetallic (not shown in the figure), bimetallic is welded on the arc angle plate 106 to serve as a supporting point for supporting bimetallic, a mounting block is arranged on the arc extinguishing seat 101 near the arc angle plate 106, an adjusting screw 108 is arranged on the mounting block, the adjusting screw 108 faces the arc angle plate 106, when the adjusting screw 108 is screwed, the adjusting screw 108 acts on the arc angle plate 106 to drive bimetallic to act, so as to change the distance between the free end of bimetallic and the operating mechanism, thereby achieving the function of adjusting thermal trip time, and the principle of specifically adjusting thermal trip time is consistent with the prior art, and is not described herein again.

Further, referring to fig. 3, the arc angle plate 106 includes a first plate 1061, a second plate 1062, and a connecting plate 1063 connecting the first plate 1061 and the second plate 1062, the first plate 1061 and the second plate 1062 extend in opposite directions, a height difference is provided between the first plate 1061 and the second plate 1062, the second plate 1062 is disposed in the slot 107, the first plate 1061 extends in a direction away from the arc extinguish chamber 103 and is connected to the bimetal, an adjusting screw 108 is correspondingly disposed on the first plate 1061, and the adjusting screw 108 acts on the first plate 1061 to drive the bimetal to move, so as to adjust a distance between a free end of the bimetal and the operating mechanism, and achieve a thermal trip purpose.

The second plate 1062 of the arc angle plate 106 is located above the arc extinguishing chamber 103 and in the clamping groove 107, and has a gap with the arc extinguishing chamber 103, and the arc angle plate 106 and the two arc isolating plates 104 (the magnetic conductive plate 105 is arranged in the cavity of the arc isolating plate 104) form a triangular space structure for increasing the arc striking function.

The bimetal is connected to the first plate 1061, and the first plate 1061 of the arc angle plate 106 extends upward to be acted on by the adjusting screw 108 above the bimetal for adjusting the thermal trip time. Specifically, referring to fig. 4, a boss 109 is disposed at the first plate 1061 on the arc extinguishing seat 101, the boss 109 has a U-shaped groove 1091, the opening direction of the U-shaped groove 1091 is not limited, and may be in any direction, such as up, down, left, and right directions, for example, the opening of the U-shaped groove 1091 of the present application faces the direction of the exhaust duct forming structure 102, an adjusting screw 108 for adjusting the position between the bimetal and the operating mechanism is disposed in the U-shaped groove 1091, the end of the adjusting screw 108 is a spherical head, the spherical head corresponds to the hole 1064 disposed on the first plate 1061, the moving direction of the adjusting screw 108 faces the first plate 1061 of the arc angle plate 106, and the spherical head of the adjusting screw 108 acts on the first plate 1061 through the hole 1064 to drive the bimetal to adjust the position between the bimetal and the operating mechanism.

In addition, a rib 110 is formed on the arc extinguishing base 101 on the opposite side of the slot 107, the first plate 1061 is located above the rib 110, and the rib 110 is used for supporting the first plate 1061 of the arc angle plate 106 when the adjusting screw 108 is actuated.

Referring to fig. 4, a rib 110 is formed on the arc extinguishing seat 101, one end of the rib 110 extends to the slot 107, the other end extends to the direction of the first plate 1061, the middle of the rib 110 protrudes, the first plate 1061 is located at the protrusion of the rib 110, and when the adjusting screw 108 acts on the first plate 1061 downward, the rib below the first plate 1061 can play a role in supporting.

When the modularized arc extinguishing system 100 provided by the embodiment of the application is installed, the magnetic conducting plate 105 is embedded into the inner cavity of the arc-extinguishing plate 104 from one end of the arc-extinguishing plate 104 to form an arc-extinguishing plate assembly, the assembled arc-extinguishing plate assembly is embedded into two side walls of the arc-extinguishing chamber from the second cavity opening 1032 at the top of the arc-extinguishing chamber, the two side walls of the arc-extinguishing chamber are provided with corresponding clamping grooves to clamp the arc-extinguishing plate assembly, the arc-extinguishing chamber 103 is embedded into the first cavity opening 1031 at the bottom of the arc-extinguishing chamber, the front end of the arc-extinguishing chamber 103 corresponds to the arc-extinguishing plate assembly, the rear end of the arc-extinguishing chamber is formed by connecting the air leakage passage (inclined wall) 1022 of the exhaust passage forming structure 102, the arc angle plate 106 is embedded into the clamping groove 107 at the upper end of the arc-extinguishing chamber 103 from the right side, and the adjusting screw 108 is embedded into the boss 109 of the arc-extinguishing chamber 103, so that the arc-extinguishing chamber 103, the arc angle plate 106, the adjusting screw 108 and the arc-extinguishing plate assembly are integrally installed on the arc-extinguishing seat 101 (the arc-extinguishing seat 101 forms the exhaust passage forming structure 102), and then the modular arc extinguishing system 100 is installed at the corresponding position of the base 200 of the circuit breaker housing, thereby realizing modular installation.

On the other hand, referring to fig. 5, the circuit breaker according to the embodiment of the present application further includes a housing base 200, a contact system disposed in the housing base 200, and the modular arc extinguishing system 100, where an arc striking component of the modular arc extinguishing system 100 corresponds to the movable contact system.

The modularized arc extinguishing system 100 is arranged in the housing base 200, and other breaker components, such as a contact system, are also arranged, the contact system includes a moving contact and a fixed contact, the positions of the contact system and the arc striking component correspond, electric arcs generated by the moving contact and the fixed contact are introduced into the arc extinguishing chamber 103 through the arc striking component to extinguish the arc, and gas generated by arc extinguishing is exhausted from the exhaust channel forming structure 102 of the modularized arc extinguishing system 100. Through modularization arc extinguishing system 100, can realize the modularization installation, be convenient for the turnover of circuit breaker assembly process, improve the flexibility and the productivity effect of circuit breaker assembly.

Further, a plurality of modular arc extinguishing systems 100 are disposed in the housing base 200, and the plurality of modular arc extinguishing systems 100 are disposed side by side perpendicular to the exhaust direction F.

The circuit breaker may include a plurality of modular arc extinguishing systems 100, the plurality of modular arc extinguishing systems 100 being arranged side by side to extinguish an arc generated by the contact system.

Exemplarily, the circuit breaker that this application embodiment provided includes four modularization arc extinguishing systems 100 that set up side by side in, forms corresponding four cavities 201 in the housing base 200, and every cavity 201 corresponds an installation modularization arc extinguishing system 100, through the setting of modularization arc extinguishing system 100, can realize the modularization installation, and a plurality of modularization arc extinguishing systems 100 of the optional installation of same housing base 200 to improve the holistic assembly efficiency of circuit breaker.

The circuit breaker includes the same structure and benefits as the modular arc extinguishing system 100 of the previous embodiment. The structure and advantages of the modular arc extinguishing system 100 have been described in detail in the foregoing embodiments, and are not repeated herein.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (11)

1. The utility model provides a modularization arc extinguishing system (100), its characterized in that includes arc extinguishing seat (101), it has exhaust passage forming structure (102), explosion chamber (103) and striking subassembly to integrate in proper order on arc extinguishing seat (101), explosion chamber (103) with exhaust passage forming structure (102) intercommunication, through striking subassembly introduces electric arc explosion chamber (103) arc extinguishing to gaseous by exhaust passage forming structure (102) are discharged.

2. The modular arc extinguishing system (100) according to claim 1, characterized in that the end of the arc extinguishing seat (101) remote from the exhaust duct forming structure (102) is formed with an arc extinguishing chamber having a first opening (1031), the arc extinguishing chamber (103) being arranged inside the arc extinguishing chamber by the first opening (1031).

3. The modular arc extinguishing system (100) according to claim 2, characterized in that the arc striking assembly comprises two arc baffles (104) oppositely arranged on the arc extinguishing seat (101), the arc baffles (104) having a cavity in which a magnetic conductive plate (105) is arranged.

4. The modular arc extinguishing system (100) according to claim 3, wherein the arc extinguishing chamber further has a second opening (1032) in an opposite direction to the first opening (1031), the chamber communicating with the second opening (1032), the arc striking assembly being disposed within the arc extinguishing chamber by the second opening (1032).

5. The modular arc extinguishing system (100) according to any of claims 1-4, wherein the vent forming structure (102) is formed on a sidewall of the arc extinguishing chamber (101), wherein a plurality of guide plates (1021) are disposed on the sidewall, wherein one end of the plurality of guide plates (1021) is disposed on the sidewall and the other end extends toward the center of the sidewall, and wherein the plurality of guide plates (1021) extend between the end toward the center of the sidewall and the guide plates (1021) to form the vent forming structure (102).

6. The modular arc extinguishing system (100) according to claim 5, characterized in that the plurality of guide plates (1021) comprises a plurality of first guide plates (1021a) arranged perpendicular to the exhaust direction and at least one second guide plate (1021b) arranged parallel to the exhaust direction, the plurality of first guide plates (1021a) are oppositely and alternately arranged on two sides of the side wall of the arc extinguishing chamber (101), at least one second guide plate (1021b) is arranged close to the arc extinguishing chamber (103), and the gas generated by the arc extinguishing chamber (103) is exhausted through the exhaust duct forming structure (102) formed by the at least one second guide plate (1021b) and the plurality of first guide plates (1021a) in sequence.

7. The modular arc extinguishing system (100) according to claim 4, characterized in that the arc striking assembly further comprises an arc angle plate (106) disposed above the arc extinguishing chamber (103) in the direction of the second bore (1032), the arc extinguishing chamber (101) being formed with a slot (107), one end of the arc angle plate (106) being disposed within the slot (107).

8. The modular arc extinguishing system (100) of claim 7, wherein the arc chute (106) comprises a first plate (1061), a second plate (1062), and a connecting plate (1063) connecting the first plate (1061) and the second plate (1062), wherein the first plate (1061) and the second plate (1062) extend in opposite directions, respectively, and a height difference exists between the first plate (1061) and the second plate (1062), the second plate (1062) is disposed in the slot (107), and the first plate (1061) extends in a direction away from the arc extinguishing chamber (103).

9. The modular arc extinguishing system (100) according to claim 8, characterized in that a boss (109) is provided on the arc extinguishing seat (101), the boss (109) has a U-shaped groove (1091), an adjusting screw (108) for adjusting the position between bimetal and operating mechanism is provided in the U-shaped groove (1091), the end of the adjusting screw (108) corresponds to the hole (1064) provided on the first plate (1061);

and a convex rib (110) is further formed on the arc extinguishing seat (101) on the opposite side of the clamping groove (107), the first flat plate (1061) is positioned above the convex rib (110), and the convex rib (110) is used for supporting the first flat plate (1061) of the arc angle plate (106) when the adjusting screw (108) acts.

10. A circuit breaker, characterized by a housing base (200), and a contact system disposed within the housing base (200) and the modular arc extinguishing system (100) of any of claims 1-9, the arc initiation assembly of the modular arc extinguishing system (100) corresponding to the contact system.

11. The circuit breaker of claim 10, wherein a plurality of said modular arc extinguishing systems (100) are disposed within said housing base (200), said plurality of said modular arc extinguishing systems (100) being disposed side by side perpendicular to a direction of exhaust (F).

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