Arc extinguish chamber and switch unit
By setting vertically arranged X- and Y-axis grid groups in the arc-extinguishing chamber, increasing the number of grids and forming equal-phase connections, the problem of insufficient arc-extinguishing capacity is solved, and the electrical performance and electrical life of the circuit breaker are improved.
Patent Information
- Application Number
- CN202422814863.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-11-18
AI Technical Summary
In existing circuit breakers, the number of grid plates in the arc-extinguishing chamber is limited by the height of the chamber, resulting in insufficient arc-extinguishing capacity and affecting electrical performance.
Two sets of vertically arranged grid plates are set in the arc-extinguishing chamber, including X-direction grid plates spaced apart along the Y direction and Y-direction grid plates spaced apart along the X direction. At least one Y-direction grid plate is connected to the X-direction grid plate whose projection in the Z direction overlaps with its X-direction grid plate. The Z direction is set at an angle α with the X direction, thereby increasing the number of grid plates and forming an equiphase connection.
Increasing the number of grid plates within the same volume improves the arc-extinguishing and breaking capacity of the arc-extinguishing chamber, thus extending its electrical life.
Smart Images
Figure CN223582932U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of low-voltage electrical apparatus, in particular to an arc-extinguishing chamber and a switching unit. BACKGROUND
[0002] In the arc-extinguishing chamber of the existing circuit breaker, the grid fins are generally arranged in parallel or in a certain arc shape, and the number of the grid fins is limited by the height of the inner cavity of the circuit breaker. However, the number of the grid fins directly affects the arc-extinguishing capacity of the arc-extinguishing chamber, thereby affecting the electrical performance of the circuit breaker. At present, the number of the arc-extinguishing grid fins arranged in the cavity of the circuit breaker is small, and the arc is not easy to jump to another group of arc-extinguishing grid fins, resulting in insufficient arc-extinguishing capacity. CONTENT OF THE UTILITY MODEL
[0003] The present application aims at the deficiencies in the prior art, and provides an arc-extinguishing chamber and a switching unit, which arrange more arc-extinguishing grid fins to improve the arc-extinguishing capacity of the arc-extinguishing chamber.
[0004] To achieve the above-mentioned purpose, the technical solutions adopted by the embodiments of the present application are as follows:
[0005] In one aspect of the embodiments of the present application, an arc-extinguishing chamber is provided, which comprises a mounting bracket and a first grid fin group and a second grid fin group arranged on the mounting bracket. The first grid fin group comprises a plurality of X-direction grid fins arranged at intervals along the Y direction, the second grid fin group comprises a plurality of Y-direction grid fins arranged at intervals along the X direction, and the X direction and the Y direction are perpendicular to each other.
[0006] At least one Y-direction grid fin is connected to any X-direction grid fin whose projection in the Z direction overlaps the Y-direction grid fin. The Z direction is the direction perpendicular to the grid fin surface of the Y-direction grid fin, and the angle a between the Z direction and the X direction is set.
[0007] Optionally, the angle a between the Z direction and the X direction satisfies: 0°>a≥50°.
[0008] Optionally, the second X-direction grid fin farthest from the contact mechanism is connected to the first Y-direction grid fin closest to the first grid fin group.
[0009] Optionally, the first X-direction grid fin farthest from the contact mechanism is connected to the second Y-direction grid fin closest to the first grid fin group.
[0010] Optionally, the plurality of X-direction grid fins are arranged in parallel or at acute angles, and the plurality of Y-direction grid fins are arranged in parallel or at acute angles.
[0011] Optionally, the first grid fin group and the second grid fin group are arranged at intervals, and the intervals between the plurality of X-direction grid fins and the first Y-direction grid fin are not equal.
[0012] Optionally, the plurality of Y-direction vanes in the second vane group are arranged at least partially in an arc shape.
[0013] Optionally, the spacing between the plurality of Y-direction vanes is not equal.
[0014] In another aspect of the embodiments of the present application, a switch unit is provided, comprising a cavity, and a contact mechanism and the above-mentioned arc-extinguishing chamber arranged in the cavity.
[0015] Optionally, the arc-extinguishing chamber has two, and the two arc-extinguishing chambers are oppositely arranged along the Y direction on both sides of the contact mechanism, and the Y-direction vanes of the two arc-extinguishing chambers are oppositely arranged along the Y direction, and the X-direction vanes of the two arc-extinguishing chambers are oppositely arranged along the X direction.
[0016] The beneficial effects of the present application include:
[0017] The present application provides an arc-extinguishing chamber and a switch unit, a mounting bracket is provided with a first vane group and a second vane group, the first vane group comprises a plurality of X-direction vanes arranged at intervals along the Y direction, the second vane group comprises a plurality of Y-direction vanes arranged at intervals along the X direction, the X direction and the Y direction are perpendicular; at least one Y-direction vane is connected with any X-direction vane whose projection in the Z direction overlaps, the Z direction is the direction perpendicular to the vane surface of the Y-direction vane, and the Z direction and the X direction are arranged at an angle a. By arranging two groups of vanes with different arrangement directions, the number of vanes can be increased under the same volume, and the arc-extinguishing capacity of the arc-extinguishing chamber is improved; and the X-direction vanes and the Y-direction vanes are connected to form equal-phase connection, so that the arc is more easily entered into the vanes, and the breaking capacity and electrical life of the arc-extinguishing chamber are improved. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.
[0019] Figure 1 One of the structure schematic diagrams of the arc-extinguishing chamber provided by the embodiments of the present application;
[0020] Figure 2 The second structure schematic diagram of the arc-extinguishing chamber provided by the embodiments of the present application;
[0021] Figure 3 One of the structure schematic diagrams of the switch unit provided by the embodiments of the present application;
[0022] Figure 4Figure 2 is a structural schematic diagram of a switch unit according to an embodiment of the present application.
[0023] Figure 1 is a structural schematic diagram of a switch unit according to an embodiment of the present application. DETAILED DESCRIPTION
[0024] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0025] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. It should be noted that the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the protection scope of the present application, without conflict.
[0026] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0027] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0028] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0029] In the description of the present application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0030] In one aspect of the embodiments of the present application, referring to Figure 1 , an arc-extinguishing chamber 10 is provided, comprising a mounting bracket 10a and a first grid group 11 and a second grid group 12 arranged on the mounting bracket 10a, the first grid group 11 comprising a plurality of X-direction grids 110 arranged at intervals along the Y-direction, the second grid group 12 comprising a plurality of Y-direction grids 120 arranged at intervals along the X-direction, the X-direction and the Y-direction being perpendicular to each other.
[0031] At least one Y-direction grid 120 is connected to any X-direction grid 110 whose projection in the Z-direction overlaps, the Z-direction being the direction perpendicular to the plane of the Y-direction grid 120, the angle a between the Z-direction and the X-direction.
[0032] For example, the angle a between the Z-direction and the X-direction satisfies 0°>a≥50°.
[0033] The arc-extinguishing chamber 10 has two grid groups, namely the first grid group 11 and the second grid group 12; wherein the first grid group 11 comprises a plurality of X-direction grids 110, each X-direction grid 110 being arranged along the X-direction, and the plurality of X-direction grids 110 being arranged in an array along the Y-direction and at intervals; the second grid group 12 comprises a plurality of Y-direction grids 120, each Y-direction grid 120 being arranged along the Y-direction, and the plurality of Y-direction grids 120 being arranged in an array along the X-direction and at intervals.
[0034] By arranging two grid groups with different arrangement directions, the number of grids can be increased under the same volume, and the arc-extinguishing capacity of the arc-extinguishing chamber 10 can be improved; and the X-direction grids 110 and the Y-direction grids 120 are connected to form equal-phase connection, so that the arc is more easily introduced into the grid, and the breaking capacity and electrical life of the arc-extinguishing chamber 10 are improved.
[0035] The grid has a side wall and a grid face, the direction perpendicular to the grid face of the Y-direction grid 120 is set as the Z-direction, and the angle a between the Z-direction and the X-direction can satisfy 0°>a≥50°, in other words, the plurality of Y-direction grids 120 are not arranged in an array completely parallel to the X-direction, but are arranged at an angle with the X-direction, and when a single Y-direction grid 120 is inclined, the normal line of the grid face is the Z-direction, that is, the angle b between the grid face and the Z-direction is always 90 degrees.
[0036] And, when the plurality of Y-direction vanes 120 are not arranged in parallel, each Y-direction vane 120 has its own Z-direction, for example Figure 2 The first Y-direction vane 121 has its Z1 direction, the second Y-direction vane 122 has its Z2 direction, and the rest of the Y-direction vanes 120 follow the same pattern.
[0037] In the present application, at least one Y-direction vane 120 and any X-direction vane 110 are connected, and the projection of the connected Y-direction vane 120 and X-direction vane 110 in the Z direction overlaps, so that the X-direction vane 110 and the Y-direction vane 120 are connected in phase.
[0038] Specifically, in some embodiments, as shown in Figure 1 The second X-direction vane 112 farthest from the contact mechanism 21 (the origin O is the center point of the contact mechanism 21) is connected to the first Y-direction vane 121 closest to the first vane group 11.
[0039] Generally, at least one X-direction vane 110 and Y-direction vane 120 are connected to form a phase connection, and in the present application, the contact mechanism 21 is preferably arranged close to the second vane group 12, and the second X-direction vane 112 farthest from the contact mechanism 21 in the X direction is connected to the first Y-direction vane 121 closest to the first vane group 11.
[0040] Further, referring to Figure 2 The first X-direction vane 111 farthest from the contact mechanism 21 is connected to the second Y-direction vane 122 closest to the first vane group 11.
[0041] In addition to the connection of the second X-direction vane 112 and the first Y-direction vane 121, the first X-direction vane 111 and the second Y-direction vane 122 can also be connected to further improve the breaking capacity and electrical life of the arc-extinguishing chamber 10.
[0042] As mentioned earlier, when the plurality of Y-direction vanes 120 are not arranged in parallel and form an acute angle arrangement, each Y-direction vane 120 has its own Z-direction. In addition, the plurality of Y-direction vanes 120 can also be arranged in parallel, at which time each Y-direction vane 120 has the same Z-direction.
[0043] In the examples of the present application, the plurality of Y-direction vanes 120 are arranged at an acute angle, and the plurality of X-direction vanes 110 are arranged in parallel. Of course, the plurality of X-direction vanes 110 can also be arranged at an acute angle, which is selected according to actual needs.
[0044] In addition, the first vane group 11 and the second vane group 12 are arranged at intervals, and the first Y-direction vane 121 is arranged obliquely along the Y direction, so that the plurality of X-direction vanes 110 and the first Y-direction vane 121 have unequal spacings, as shown inFigure 1 As shown, the second X-directional grid sheet 112 gradually increases the spacing between the remaining X-directional grid sheets 110 to the right along the Y direction and the first Y-directional grid sheet 121.
[0045] In addition to the first Y-directional grid sheet 121 being obliquely arranged along the Y direction, the remaining Y-directional grid sheets 120 are also obliquely arranged along the Y direction, and the plurality of Y-directional grid sheets 120 are at least partially arranged in an arc shape, so that the arc chamber 10 as a whole forms an arc structure to match and adapt to the shape of the contact mechanism 21 and reasonably utilize the arrangement space of the cavity 20a.
[0046] When the at least part of the Y-directional grid sheets 120 are arranged in an arc shape, in order to maintain the shape of the arc, the spacing between the plurality of Y-directional grid sheets 120 is not equal.
[0047] Based on this, referring to Figs. 1 and 2, Figure 3 and Figure 4 the application further discloses a switch unit 20, comprising a cavity 20a, and a contact mechanism 21 and the arc chamber 10 of any one of the above arranged in the cavity 20a.
[0048] The arc chamber 10 is used for arc extinguishing of the contact mechanism 21; the arc chamber 10 of the application has two, and the two arc chambers 10 are oppositely arranged along the Y direction on both sides of the contact mechanism 21, and the Y-directional grid sheets 120 of the two arc chambers 10 are oppositely arranged along the Y direction, and the X-directional grid sheets 110 of the two arc chambers 10 are oppositely arranged along the X direction, so as to wrap the contact mechanism 21 in the arc extinguishing area formed by the two arc chambers 10, and effectively extinguish the arc.
[0049] The switch unit 20 comprises the same structure and advantages as the arc chamber 10 in the foregoing embodiments. The structure and advantages of the arc chamber 10 have been described in detail in the foregoing embodiments, and will not be described here.
[0050] The above only describes the preferred embodiments of the application and is not intended to limit the application. Those skilled in the art can make various modifications and changes to the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.
Claims
1. An arc quenching chamber, characterized in that, The installation support (10a) is provided with a first grid group (11) and a second grid group (12), the first grid group (11) comprises a plurality of X-direction grids (110) arranged along the Y direction, and the second grid group (12) comprises a plurality of Y-direction grids (120) arranged along the X direction, and the X direction and the Y direction are perpendicular to each other. At least one Y-direction grid (120) is connected with any X-direction grid (110) whose Z-direction projection overlaps with the Y-direction grid (120), the Z direction is perpendicular to the grid surface of the Y-direction grid (120), and the Z direction and the X direction form an angle (a).
2. The arc chute according to claim 1, characterized in that The angle (a) between the Z direction and the X direction satisfies: 0°>a≥50°.
3. The arc chute of claim 1, wherein, The second X-direction grid (112) farthest from the contact mechanism (21) is connected with the first Y-direction grid (121) closest to the first grid group (11).
4. The arc chute of claim 3, wherein, The first X-direction grid (111) farthest from the contact mechanism (21) is connected with the second Y-direction grid (122) closest to the first grid group (11).
5. The arc chute according to any one of claims 1 to 4, characterized in that The plurality of X-direction grids (110) are arranged in parallel or form an acute angle, and the plurality of Y-direction grids (120) are arranged in parallel or form an acute angle.
6. The arc chute according to claim 3 or 4, characterized in that The first grid group (11) and the second grid group (12) are arranged at intervals, and the plurality of X-direction grids (110) and the first Y-direction grid (121) are arranged at unequal intervals.
7. The arc chute according to any one of claims 1 to 4, characterized in that The plurality of Y-direction grids (120) in the second grid group (12) are arranged at least partially in an arc shape.
8. The arc chute of claim 7, wherein, The plurality of Y-direction grids (120) are arranged at unequal intervals.
9. A switching unit, characterized by The installation support (10a) is provided with a first grid group (11) and a second grid group (12), the first grid group (11) comprises a plurality of X-direction grids (110) arranged along the Y direction, and the second grid group (12) comprises a plurality of Y-direction grids (120) arranged along the X direction, and the X direction and the Y direction are perpendicular to each other.
10. The switching unit according to claim 9, characterized in that The installation support (10a) is provided with a first grid group (11) and a second grid group (12), the first grid group (11) comprises a plurality of X-direction grids (110) arranged along the Y direction, and the second grid group (12) comprises a plurality of Y-direction grids (120) arranged along the X direction, and the X direction and the Y direction are perpendicular to each other.