CN218548355U - Deionization plate, arc extinguishing system and circuit breaker - Google Patents

Abstract

The application provides a free board, arc extinguishing system and circuit breaker disappear, the free board that disappears includes relative first side, second side and is located the free portion and the insulating part that disappear between first side and the second side, and the free portion that disappears is used for adsorbing charged particles, and the insulating part meets the setting with the free portion that disappears to it is discontinuous to be used for making the free portion that disappears from first side to second side. The application provides a free board that disappears can improve the security that distribution electrical apparatus used.

Description

Deionization plate, arc extinguishing system and circuit breaker

Technical Field

The application relates to the technical field of circuit breakers, in particular to a deionization plate, an arc extinguishing system and a circuit breaker.

Background

The existing deionization technology is to place a woven metal filter screen at the air outlet of the power distribution apparatus, so as to absorb the conductive particles in the air. However, as the voltage in the power distribution system is further increased, the concentration of charged particles generated by collision ionization and thermal ionization in the air is too high, when the charged particles move to the metal filter screen, the charged particles are directly conducted by the metal filter screen, and the electric arc is broken down by the metal filter screen, so that the safe and stable operation of a circuit system is damaged.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a free board, arc extinguishing system and circuit breaker disappear, should disappear free board and can improve the security that distribution electrical apparatus used.

In a first aspect, an embodiment of the present application provides a deionization plate, which includes a first side edge, a second side edge, and a deionization portion and an insulation portion located between the first side edge and the second side edge, where the deionization portion is used for adsorbing charged particles, and the insulation portion is connected to the deionization portion and used for making the deionization portion discontinuous from the first side edge to the second side edge.

In some embodiments, the deionization portion has an area S1, the deionization plate has an area S2, and S1 and S2 satisfy: S1/S2 is more than or equal to 1/5 and less than 1.

In some embodiments, S1 and S2 satisfy: S1/S2 is more than or equal to 1/2 and less than 1.

In some embodiments, the number of the free portions is two, and the two free portions are connected to both ends of the insulating portion in the arrangement direction of the first side and the second side.

In some embodiments, the number of the insulating portions and the number of the deionizing portions are each plural, and the plural insulating portions and the plural deionizing portions are alternately arranged in the arrangement direction of the first side edge and the second side edge.

In some embodiments, the number of the deionization units is plural, and the insulating unit surrounds at least a part of the outer circumference of the deionization units, and any two deionization units are spaced from each other.

In some embodiments, the number of the deionizing portions is plural, and the plural deionizing portions are arranged in an array.

In some embodiments, the deionization plate includes two first deionization subsections and a second deionization subsection, the two first deionization subsections are spaced apart along a first direction, the second deionization subsection is located on one side of a line connecting the two first deionization subsections, and a projection of the second deionization subsection along a second direction is located between the two first deionization subsections, wherein the first direction is perpendicular to the second direction, and the first direction is parallel to an arrangement direction of the first side edge and the second side edge.

In some embodiments, the deionization plate comprises a plurality of first deionization units and a plurality of second deionization units, wherein the first deionization units and the second deionization units respectively comprise a plurality of deionization dissociation parts arranged at intervals along a first direction, the first deionization units and the second deionization units are alternately arranged along a second direction, and the deionization units of the first deionization units and the second deionization units are arranged in a staggered manner along the second direction, wherein the first direction is perpendicular to the second direction, and the first direction is parallel to the arrangement direction of the first side edge and the second side edge.

The second aspect, this application still provides an arc extinguishing system, including foretell free board and the explosion chamber that disappears, the explosion chamber with disappear free board and be connected.

In a third aspect, the present application further provides a circuit breaker including the deionization plate described above.

In some embodiments, the circuit breaker includes a housing, a contact device and an arc extinguishing device, the housing has a containing cavity, the containing cavity includes a first arc extinguishing zone and a second arc extinguishing zone which are arranged along a third direction, the contact device is positioned on one side of the first arc extinguishing zone, which is far away from the second arc extinguishing zone, in the containing cavity; the arc extinguishing device comprises a first arc extinguishing chamber positioned in a first arc extinguishing area, a second arc extinguishing chamber positioned in a second arc extinguishing area and an arc guiding piece, wherein the first arc extinguishing chamber and the second arc extinguishing chamber are overlapped in projection on a first plane along a third direction and can be electrically connected through the arc guiding piece, and the first plane is perpendicular to the third direction; the shell is provided with an air outlet, and the deionization plate is arranged at the air outlet.

The deionization plate of the embodiment of the application is through setting up the insulating part of being connected with deionization portion to because the existence of insulating part makes deionization portion from first side to second side discontinuous, so, even under high voltage, the electric arc that extends from first side to second side also hardly switches on with the help of deionization plate, and then has improved distribution apparatus's security. Meanwhile, the probability that the arc extinguishing chamber adjacent to the deionization plate can cut electric arcs is improved, and the reliability of the distribution electrical appliance is improved.

Drawings

Features, advantages and technical effects of exemplary embodiments of the present application will be described below by referring to the accompanying drawings.

FIG. 1 is a schematic structural view of a prior art deionization plate;

FIG. 2 is a schematic structural diagram of a deionization plate provided in an embodiment of the present application;

FIG. 3 is a schematic view of another embodiment of the deionization plate according to the present application;

FIG. 4 is a schematic structural diagram of a deionization plate provided in an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a deionization plate provided in an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a deionization plate according to an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a deionization plate provided by an embodiment of the present application;

fig. 8 is a schematic cross-sectional view of a circuit breaker according to an embodiment of the present application.

Description of reference numerals:

1. a dissociation plate is eliminated;

11. a first side edge; 12. a second side edge; 13. a dissociation part is eliminated; 131. a first deionization sub-portion; 132. a second deionization sub-portion; 14. an insulating section; 15. a first deionization row; 16. a second deionization row;

2. a housing;

21. an accommodating chamber; 22. a first arc extinguishing zone; 23. a second arc extinguishing zone; 24. an air outlet;

3. a contact arrangement;

31. static contact; 32. a moving contact;

4. an arc extinguishing device;

41. a first arc-extinguishing chamber; 42. a second arc extinguishing chamber; 43. an arc guide member;

x, a first direction; y, a second direction; z, third direction.

Detailed Description

Embodiments of the present application will be described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the application and are not intended to limit the scope of the application, i.e., the application is not limited to the described embodiments.

In the description of the present application, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship that is merely for convenience in describing the application and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The following description is given with the directional terms as they are used in the drawings and not intended to limit the specific structure of the present application. In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in this application can be understood as appropriate by one of ordinary skill in the art.

FIG. 1 is a schematic view of a prior art deionization plate.

As shown in fig. 1, the existing deionization plate is made of metal material, and the metal filter screen is continuously arranged between two opposite side edges without interruption, so that under the working condition of high voltage, charged particles are easily conducted through the metal filter screen, thereby the arc breakdown phenomenon occurs, and the use safety of the power distribution apparatus is reduced. In addition, the arc extinguishing chamber of the distribution apparatus adjacent to the deionization plate does not play a role in cutting and cooling the electric arc, so that breaking failure is caused.

For a better understanding of the present application, embodiments of the present application are described below with reference to fig. 2 to 8.

Fig. 2 is a schematic structural diagram of a deionization plate provided in the embodiments of the present application.

Referring to fig. 2, an ionization eliminating plate 1 according to an embodiment of the present invention includes a first side 11, a second side 12, and an ionization eliminating portion 13 and an insulating portion 14 located between the first side 11 and the second side 12, where the ionization eliminating portion 13 is configured to adsorb charged particles, and the insulating portion 14 is connected to the ionization eliminating portion 13 and configured to make the ionization eliminating portion 13 discontinuous from the first side 11 to the second side 12.

The shape of the ionization plate 1 is not limited in the embodiments of the present application, and the shape is, for example, a rectangle, a parallelogram, a trapezoid, or the like.

The shape of the ionization part 13 or the insulation part 14 is not limited in the embodiment of the present application, and the ionization part 13 may be rectangular, circular, or the like, for example. The shape of the insulation 14 may be rectangular or other irregular shapes.

In the embodiment of the present application, there is no limitation on whether the thicknesses of the insulating portion 14 and the deionization portion 13 are the same, and the thicknesses of the insulating portion 14 and the deionization portion 13 may be the same or different. In the embodiment of the present application, whether the thicknesses of the insulation portion 14 and the ionization elimination portion 13 are the same or not is not limited.

The first side edge 11 and the second side edge 12 of the present embodiment are oppositely disposed, and do not mean that the first side edge 11 and the second side edge 12 are parallel to each other. Illustratively, when the first side edge 11 and the second side edge 12 are linear side edges, one of them may be disposed obliquely with respect to the other.

The insulating part 14 and the deionization part 13 of the embodiment of the present application are disposed in a connected manner, which means that the edges of the insulating part 14 and the deionization part 13 are connected, and further optionally, the edges of the insulating part and the deionization part are connected in a direct contact manner.

The ionization-elimination portion 13 of the embodiment of the present application is made of a metal material. Optionally, the deionization part 13 is of a metal mesh structure.

Optionally, the deionization part comprises a plate body, and a plurality of through holes penetrating through the plate body along the thickness direction are formed in the plate body.

The insulating portion 14 of the embodiment of the present application is made of an insulating material. For example, the insulating portion 14 may be made of rubber, plastic, or the like.

Alternatively, the deionization plate 1 of the embodiment of the present application is composed of a first side edge 11, a second side edge 12, a deionization portion 13, and an insulating portion 14. In this embodiment of the application, the material of the first side 11 and the second side 12 is not limited, and the first side 11 and the second side 12 may be made of a metal material consistent with the deionization part 13, may also be made of an insulating material consistent with the insulating part 14, and may also be made of other materials.

Further alternatively, the deionization plate 1 comprises a frame body, and an insulating part 14 and a deionization part 13 connected to the frame body, wherein the frame body comprises a first side 11 and a second side 12 and encloses to form a closed ring-shaped structure.

In the embodiment of the present application, the free portion 13 is discontinuous from the first side edge 11 to the second side edge 12, which means that the free portion 13 is not continuously disposed in any region from the first side edge 11 to the second side edge 12.

The deionization plate 1 according to the embodiment of the present application is installed at an air outlet of an electrical distribution apparatus, wherein the arrangement direction of the first side 11 and the second side 12 is substantially the same as the arrangement direction of the grid plates of the arc extinguishing chambers in the electrical distribution apparatus. Further, the arrangement direction of the first side 11 and the second side 12 is parallel to the arrangement direction of the grid of the arc extinguishing chamber in the electrical distribution apparatus.

The deionization plate 1 of the embodiment of the application is provided with the insulating part 14 connected with the deionization part 13, and the deionization part 13 is discontinuous from the first side edge 11 to the second side edge 12 due to the existence of the insulating part 14, so that an electric arc extending from the first side edge 11 to the second side edge 12 is difficult to conduct through the deionization plate 1 even under high voltage, and the safety of the power distribution appliance is improved; meanwhile, the probability that the arc extinguishing chamber adjacent to the deionization plate can cut the electric arc is improved, and the reliability of the distribution electrical appliance is improved.

In some embodiments, the deionization part 13 has an area S1, the deionization plate 1 has an area S2, and S1 and S2 satisfy: S1/S2 is more than or equal to 1/5 and less than or equal to 1/S2.

In the embodiment of the present application, when the number of the ionization preventing portions 13 is plural, the area thereof is the total area of the plural ionization preventing portions 13.

In the present embodiment, the area of the deionization plate 1 is the area of the deionization plate 1 facing one side, and the area of the deionization portion 13 is the area of the deionization portion 13 facing the one side.

Optionally, the value of S1/S2 is 1/5, 2/5, 3/5 or 4/5.

The deionization part 13 is used for adsorbing charged particles generated when the distribution apparatus is disconnected from a circuit, and reducing or even avoiding the phenomenon that the charged particles penetrate through an air outlet to generate flashover breakdown, so that the larger the area of the deionization part 13 is, the more the charged particles can be absorbed, and the more the phenomenon of flashover breakdown is difficult to generate.

Therefore, the S1/S2 value is limited to be greater than or equal to 1/5, so as to ensure the area ratio of the deionization part 13 in the deionization plate 1, fully play the role of absorbing charged particles and improve the safety of the power distribution equipment.

In some embodiments, S1 and S2 satisfy: S1/S2 is more than or equal to 1/2 and less than 1.

The value of S1/S2 is further limited to be more than or equal to 1/2, so that the area proportion occupied by the deionization part 13 is further improved, the capacity of the deionization plate 1 for absorbing charged particles is improved, and the use safety of the power distribution apparatus is improved.

Optionally, the value of S1/S2 is 1/2, 2/3, 3/4 or 4/5.

Fig. 3 is another structural schematic diagram of the deionization plate provided by the embodiment of the present application, and fig. 4 is another structural schematic diagram of the deionization plate provided by the embodiment of the present application.

Referring to fig. 3 and 4, in some embodiments, the number of the free portions 13 is two, and two free portions 13 are connected to two ends of the insulating portion 14 in the arrangement direction of the first side 11 and the second side 12.

In the embodiment of the present application, there is no limitation on whether the two ionization eliminating parts 13 have the same size, that is, the two ionization eliminating parts 13 may have the same size or different sizes.

Alternatively, the ionization part 13 is directly connected to the insulating part 14.

Alternatively, the two free portions 13 have the same dimension along the arrangement direction of the first side edge 11 and the second side edge 12.

The number of the deionization part 13 is set to be two, and the two deionization parts 13 are connected to the two ends of the insulation part 14 in the arrangement direction of the first side edge 11 and the second side edge 12, so that the arrangement mode is convenient to manufacture, and the area requirement of the deionization part 13 is easily met.

Fig. 5 is a schematic structural diagram of a deionization plate provided in an embodiment of the present application.

Referring to fig. 2 and 5, in some embodiments, the number of the insulating portions 14 and the number of the dissociation portions 13 are multiple, and the multiple insulating portions 14 and the multiple dissociation portions 13 are alternately arranged along the arrangement direction of the first side 11 and the second side 12.

In the embodiment of the present application, there is no limitation on whether the shapes of the plurality of insulation portions 14 are the same, and the shapes of the plurality of insulation portions 14 may be the same or different, or the shapes of a part number of insulation portions 14 may be the same, and the shapes of a part number of insulation portions 14 may be different. This is also true of the free portion 13, which is not described in detail herein.

In the embodiment of the present application, whether the sizes of the plurality of insulation portions 14 in the arrangement direction of the first side 11 and the second side 12 are the same or not is not limited, and the sizes of the plurality of insulation portions 14 in the direction may be the same or different, or the sizes of a part of the number of insulation portions 14 in the direction may be the same and the sizes of a part of the number of insulation portions 14 in the direction may be different. As is the case with the free portion 13, which will not be described in detail herein.

Alternatively, the total area of the plurality of ionization parts 13 is larger than the total area of the plurality of insulation parts 14.

Optionally, the number of the deionizing parts 13 is greater than the number of the insulating parts 14.

The insulating parts 14 and the deionization parts 13 are alternately arranged along the arrangement direction of the first side edge 11 and the second side edge 12, and the conduction phenomenon of the conductive particles can be reduced to a great extent by the mode that the insulating parts 14 are arranged at intervals, so that the probability that the electric arc breaks down by means of the deionization plate 1 with a large number of conductive particles is reduced, and the use safety of the distribution apparatus under the high-voltage working condition is improved.

Fig. 6 is a schematic structural diagram of a deionization plate provided in an embodiment of the present application, and fig. 7 is a schematic structural diagram of a deionization plate provided in an embodiment of the present application.

Referring to fig. 6 and 7, in some embodiments, the number of the ionization parts 13 is plural, and the insulating part 14 surrounds at least a part of the outer circumference of the ionization parts 13, and any two of the ionization parts 13 are spaced apart from each other.

The number of the deionization portion 13 in the embodiment of the present application is at least two.

Optionally, the insulation portion 14 surrounds at least half of the circumference of the deionization portion 13.

Alternatively, the insulating portion 14 surrounds the entire outer peripheral side of the ionization elimination portion 13.

The insulating portion 14 is provided around the ionization portion 13, and does not represent the shape of the insulating portion 14 but a circular shape, and may be a square ring shape or other irregular shape.

In the present embodiment, the number of the ionization parts 13 is plural, and in the plural ionization parts 13, the insulating part 14 may surround a partial outer peripheral side of a partial number of the ionization parts 13, and the entire outer peripheral side of the remaining number of the ionization parts 13; it may surround the entire outer peripheral side of each ionization section 13; and may surround a part of the outer peripheral side of each ionization part 13.

Optionally, the total area of the insulating portions 14 is larger than the total area of the deionizing portions 13.

The insulating part 14 at least surrounds the partial outer peripheral side of the deionization part 13, and the insulating part 14 can wrap the partial outer peripheral side or the whole outer peripheral side of the deionization part 13, so that any two adjacent deionization parts 13 cannot be conducted, the possibility that the deionization plate 1 is broken down by electric arcs is greatly reduced, and the use safety of the distribution electrical appliance is improved.

In some embodiments, the number of the deionizing units 13 is plural, and the plurality of deionizing units 13 are arranged in an array.

The array arrangement of the embodiment of the application at least comprises two rows and two columns.

The plurality of deionization parts 13 are arranged in an array, so that the number of deionization parts 13 is increased, the area proportion occupied by the deionization parts 13 can be increased, and the capacity of the deionization plate 1 for adsorbing charged particles is improved.

With continued reference to fig. 6, in some embodiments, the deionization plate 1 includes two first deionization sub-portions 131 and a second deionization sub-portion 132, the two first deionization sub-portions 131 are spaced apart along a first direction X, the second deionization sub-portion 132 is located at one side of the two first deionization sub-portions 131, and a projection of the second deionization sub-portion 132 along a second direction Y is located between the two first deionization sub-portions 131, wherein the first direction X is perpendicular to the second direction Y, and the first direction X is parallel to an arrangement direction of the first side 11 and the second side 12.

The present embodiment is not limited to whether the two first deionizing sub-portions 131 have the same shape or size, and the two first deionizing sub-portions 131 may have the same shape or size or may have different shapes or sizes.

In the embodiment of the present application, the second deionization sub-portion 132 is located at one side of the two first deionization sub-portions 131, which means that the projections of the two first deionization sub-portions 131 on a plane perpendicular to the first direction X along the first direction X do not overlap with the projection of the second deionization sub-portion 132 on the plane along the first direction X, and may be connected or spaced.

In the embodiment of the present application, the projection of the second deionization sub-portion 132 along the second direction Y is located between two first deionization sub-portions 131, which means that the projection of the second deionization sub-portion 132 along the second direction Y in the region where two first deionization sub-portions 131 are located is located between two first deionization sub-portions 131.

Compared with the way that the plurality of second deionization sub-portions 132 and the plurality of insulation portions 14 are alternately arranged along the first direction X, the second deionization sub-portion 132 of the embodiment of the present invention is located on one side of the two first deionization sub-portions 131, and the projection of the second deionization sub-portion 132 along the second direction Y is located between the two first deionization sub-portions 131, if an arc is about to break down in the arrangement direction of the first side 11 and the second side 12 by means of the first deionization sub-portions 131, the path of the arc is the first deionization sub-portion 131, the second deionization sub-portion 132, and the other first deionization sub-portion 131, and the path is tortuous, so that the arc is difficult to break down the deionization plate 1 by passing through the insulation portion 14 according to the path, thereby reducing the possibility of arc breaking down of the deionization plate 1, and increasing the safety of the use of the power distribution apparatus.

Referring to fig. 7, in some embodiments, the deionization plate 1 includes a plurality of first deionization lines 15 and a plurality of second deionization lines 16, each of the first deionization lines 15 and the second deionization lines 16 includes a plurality of deionization portions 13 spaced apart from each other in a first direction X, the plurality of first deionization lines 15 and the plurality of second deionization lines 16 are alternately arranged in a second direction Y, and the deionization portions 13 of the first deionization lines 15 and the deionization portions 13 of the second deionization lines 16 are offset from each other in the second direction Y, wherein the first direction X is perpendicular to the second direction Y, and the first direction X is parallel to the arrangement direction of the first side edges 11 and the second side edges 12.

In the present embodiment, there is no limitation on whether the number of the ionization parts 13 included in the first ionization line 15 and the second ionization line 16 is the same, and the number of the ionization parts 13 included in the first ionization line 15 and the second ionization line 16 may be the same or different.

The first and second deionization lines 15 and 16 of the embodiment of the present application are alternately arranged along the second direction Y, which means that projections of any adjacent first and second deionization lines 15 and 16 along the first direction X do not overlap and may be connected or spaced.

The first deionization line 15 and the second deionization line 16 of the embodiment of the present application are disposed in a staggered manner along the second direction Y, which means that the first deionization line 15 and the second deionization line 16 are not directly opposite to each other along the second direction Y.

Alternatively, a projection of the free portion 13 of the second free line 16 in the second direction Y is located between two adjacent free portions 13 of the first free line 15.

The deionization plate 1 is arranged in a mode that a plurality of first deionization lines 15 and a plurality of second deionization lines 16 are arranged alternately, and the structural mode can increase the area proportion occupied by the deionization part 13 and increase the capacity of the deionization plate 1 for adsorbing charged particles. Moreover, if the arc is about to break down in the arrangement direction of the first side 11 and the second side 12, the path of the arc is the deionization part 13 of the first deionization row 15, the deionization part 13 of the adjacent second deionization row 16, the deionization part 13 of the adjacent first deionization row 15, the deionization part 13 of the adjacent second deionization row 16, and so on, so that the arrangement form can make the path of the arc extremely tortuous, therefore, the arc is extremely difficult to break down the deionization plate 1 in the arrangement direction of the first side 11 and the second side 12 through the insulation part 14 according to the path, thereby remarkably reducing the possibility of the deionization plate 1 breaking down by the arc, and greatly increasing the safety of the use of the power distribution apparatus.

The embodiment of the application also provides an arc extinguishing system, which comprises the deionization plate 1, wherein the deionization plate 1 is connected with an arc extinguishing chamber.

Optionally, the deionization plate 1 is fixedly connected with the arc extinguishing chamber.

Fig. 8 is a schematic cross-sectional view of a circuit breaker according to an embodiment of the present disclosure.

Referring to fig. 8, the present embodiment further provides a circuit breaker, including the deionization plate 1.

In some embodiments, the circuit breaker includes a housing 2, a contact device 3 and an arc-extinguishing device 4, the housing 2 has a receiving cavity 21, the receiving cavity 21 includes a first arc-extinguishing zone 22 and a second arc-extinguishing zone 23 arranged along a third direction Z, the contact device 3 is located at a side of the first arc-extinguishing zone 22, which faces away from the second arc-extinguishing zone 23, in the receiving cavity 21; the arc extinguishing device 4 comprises a first arc extinguishing chamber 41 located in the first arc extinguishing zone 22, a second arc extinguishing chamber 42 located in the second arc extinguishing zone 23, and an arc guiding member 43, wherein the first arc extinguishing chamber 41 and the second arc extinguishing chamber 42 are overlapped in projection on a first plane along a third direction Z, and can be electrically connected through the arc guiding member 43, wherein the first plane is perpendicular to the third direction Z; the housing 2 has an air outlet 24, and the deionization plate 1 is provided at the air outlet 24.

The contact device 3 of the embodiment of the application comprises two contacts, wherein the two contacts can be far away from or close to each other, the circuit is disconnected after the two contacts are far away from each other, and the circuit can be connected when the two contacts are mutually abutted after the two contacts are close to each other.

Alternatively, the third direction Z is perpendicular to the thickness direction of the deionization plate 1, i.e., perpendicular to the first direction X and the second direction Y.

Optionally, the air outlet 24 is located on the side of the second arc-extinguishing zone 23 facing away from the first arc-extinguishing zone 22.

In this embodiment, the projections of the first arc-extinguishing chamber 41 and the second arc-extinguishing chamber 42 on the first plane along the third direction Z overlap, which means that the projections of the first arc-extinguishing chamber 41 and the second arc-extinguishing chamber 42 on the first plane along the third direction Z partially overlap.

The arc guide 43 connects the first arc-extinguishing chamber 41 and the second arc-extinguishing chamber 42, and specifically, the arc guide 43 is connected to an end of an overlapping portion of the first arc-extinguishing chamber 41 and an end of an overlapping portion of the second arc-extinguishing chamber 42.

The free board 1 that disappears of this application embodiment can be applied to the circuit breaker that has two explosion chambers at least, this kind of circuit breaker generally is applied to in the circuit that has higher voltage, the concentration of the electrified particle that produces after first explosion chamber 41 and the second explosion chamber 42 arc-extinguish is higher, the phenomenon that the metal filter screen was punctured by electric arc takes place easily, consequently, free board 1 that disappears is applied to this kind of circuit breaker can reduce self greatly by the probability that electric arc punctures, increased with the probability that the adjacent explosion chamber of free board 1 that disappears can cut electric arc, reliability and security that the improvement circuit breaker used.

While the present application has been described with reference to preferred embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application, and particularly, features described in connection with the embodiments may be combined in any manner as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (12)

1. The deionization plate is characterized by comprising a first side edge, a second side edge, a deionization part and an insulating part, wherein the first side edge and the second side edge are opposite, the deionization part is positioned between the first side edge and the second side edge and is used for adsorbing charged particles,

the insulating part is connected with the deionization part and is used for making the deionization part discontinuous from the first side edge to the second side edge.

2. The deionization plate as claimed in claim 1, wherein the deionization portion has an area S1, the deionization plate has an area S2, and S1 and S2 satisfy: S1/S2 is more than or equal to 1/5 and less than 1.

3. The deionization plate according to claim 2, wherein said S1 and S2 satisfy: S1/S2 is more than or equal to 1/2 and less than 1.

4. The deionization plate as claimed in claim 1, wherein the number of the deionization part is two, and two deionization parts are connected to both ends of the insulating part in the arrangement direction of the first side and the second side.

5. The deionization plate as claimed in claim 1, wherein the insulating portions and the deionization portions are each provided in a plurality, and a plurality of the insulating portions and a plurality of the deionization portions are alternately arranged in the arrangement direction of the first side edge and the second side edge.

6. The ionization eliminating plate according to claim 1, wherein the number of the ionization eliminating portions is plural, and the insulating portion surrounds at least a part of an outer peripheral side of the ionization eliminating portions, and any two of the ionization eliminating portions are provided at a distance from each other.

7. The deionization plate as claimed in claim 6, wherein the number of the deionization portions is plural, and the plural deionization portions are arranged in an array.

8. The deionization plate as claimed in claim 6, comprising two first deionization subsections and a second deionization subsection, wherein two of said first deionization subsections are spaced apart in a first direction, said second deionization subsection is located on one side of a line connecting said two first deionization subsections, and a projection of said second deionization subsection in a second direction is located between said two first deionization subsections, wherein said first direction is perpendicular to said second direction, and said first direction is parallel to an arrangement direction of said first and second sides.

9. The deionization plate as claimed in claim 6, comprising a plurality of first deionization lines and a plurality of second deionization lines each comprising a plurality of said deionization portions arranged at intervals in a first direction,

it is a plurality of first disappearing free with a plurality of second disappear free and arrange along the second direction in turn, first disappear free the portion that disappears with the second disappears free the portion that disappears is in the second direction dislocation set, wherein, first direction with the second direction is perpendicular, first direction is on a parallel with the array orientation of first side and second side.

10. An arc extinguishing system, characterized in that it comprises a deionization plate as claimed in any one of claims 1 to 8 and an arc extinguishing chamber connected to said deionization plate.

11. A circuit breaker comprising the deionization plate as claimed in any one of claims 1 to 8.

12. The circuit breaker of claim 11, wherein the circuit breaker includes a housing, a contact arrangement, and an arc extinguishing arrangement,

the shell is provided with a containing cavity, the containing cavity comprises a first arc extinguishing zone and a second arc extinguishing zone which are arranged along a third direction, and the contact device is positioned on one side, away from the second arc extinguishing zone, of the first arc extinguishing zone in the containing cavity;

the arc extinguishing device comprises a first arc extinguishing chamber positioned in the first arc extinguishing area, a second arc extinguishing chamber positioned in the second arc extinguishing area and an arc guide piece, the first arc extinguishing chamber and the second arc extinguishing chamber are overlapped in projection on a first plane along a third direction and can be electrically connected through the arc guide piece, and the first plane is perpendicular to the third direction;

the shell is provided with an air outlet, and the deionization plate is arranged at the air outlet.

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