Arc extinguish chamber
The compact arc chamber design with vertically oriented magnets and fan-shaped plates in the arc chamber effectively addresses arc extinguishing inefficiencies, enabling higher current interruption capability.
Patent Information
- Application Number
- CN202422321534.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-23
AI Technical Summary
In the high voltage environment, the magnet's magnetic blowing effect is poor, resulting in low arc extinguishing efficiency and difficulty in breaking off larger currents.
An arc extinguishing chamber is designed, with the permanent magnet pole direction perpendicular to the movement direction of the moving contact, and a more compact layout is formed to accelerate the extinguishing of the arc.
The breaking performance of the isolating switch can be improved, and the arc can be attracted more effectively into the arc extinguishing chamber, enhancing the arc extinguishing effect, thereby breaking a larger current.
Smart Images
Figure CN223108724U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of low-voltage electrical appliances, and specifically relates to an arc extinguishing chamber. Background Art
[0002] As a switching device, when the disconnector is in the open position, there is an insulating distance that meets the specified requirements and an obvious disconnection mark between the contacts; when in the closed position, it is a switching device that can carry the current under normal circuit conditions and the current under abnormal conditions (such as short circuit) within a specified time.
[0003] With the improvement of product performance indicators, taking the DC operating environment as an example, the rated operating voltage has been increased to DC1500V, and the product performance level is getting higher and higher. However, in some existing disconnectors, some are placed on both sides of the arc extinguishing chamber with opposite polarities attracting each other, which makes the product have polarity; some have the magnetization direction of the magnet approximately parallel to the direction in which the moving and static contacts are separated, all of which reduce the magnetic blowing effect of the magnet. Summary of the Utility Model
[0004] The purpose of the utility model is to address the defects existing in the arc extinguishing chamber of the existing disconnector described above. It provides an arc extinguishing chamber with a more compact overall layout, where the magnetic pole direction of the permanent magnet is perpendicular to the moving direction of the moving contact, which can more effectively attract the arc into the arc extinguishing chamber, accelerate the extinction of the arc, improve the breaking performance of the disconnector, and thus can break a larger current.
[0005] Technical Solution
[0006] To achieve the above technical purpose, the utility model provides an arc extinguishing chamber, which is characterized in that: the arc extinguishing chamber includes a plurality of arc extinguishing grid sheets, both ends of the plurality of arc extinguishing grid sheets are installed on a pair of side plates, and the whole formed by the plurality of arc extinguishing grid sheets and the pair of side plates is installed in an arc extinguishing cover. A permanent magnet mounting groove one is provided on at least one outer side surface of the arc extinguishing cover corresponding to the pair of side plates, and a permanent magnet one is installed in the permanent magnet mounting groove one.
[0007] In some solutions, the arc extinguishing chamber is arranged outside the rotation trajectory of the moving contact in the contact module, and the magnetic pole direction of the permanent magnet one is perpendicular to the plane where the moving trajectory of the moving contact is located.
[0008] In some solutions, the plurality of arc extinguishing grid sheets are arranged in a fan shape, and the center of the fan shape faces the side of the rotation center of the moving contact.
[0009] In some solutions, a notch is provided on one side edge of the plurality of arc extinguishing grid sheets facing the rotation center of the moving contact.
[0010] In some solutions, the pair of side plates are insulating parts.
[0011] In some schemes, a second permanent magnet mounting groove is provided on the rear side surface of the arc extinguishing cover away from the rotation center of the moving contact, and the second permanent magnet is installed in the second permanent magnet mounting groove.
[0012] In some schemes, a first recessed groove is provided on one side of the plurality of arc-extinguishing grids facing the rotation center of the moving contact, and a second recessed groove is provided on one side of the plurality of arc-extinguishing grids facing away from the rotation center of the moving contact.
[0013] In some solutions, one side end of the two side ends of the plurality of arc-extinguishing grids is mounted on a corresponding side plate and is higher than a side surface of the arc-extinguishing cover.
[0014] Beneficial Effects
[0015] The utility model provides an arc extinguishing chamber, characterized in that: the arc extinguishing chamber comprises a plurality of arc extinguishing grids, both side ends of the plurality of arc extinguishing grids are mounted on a pair of side plates, the plurality of arc extinguishing grids and the pair of side plates are assembled as a whole and mounted in an arc extinguishing cover, and a permanent magnet mounting groove 1 is arranged on the outer side surface of at least one side of the arc extinguishing cover corresponding to the pair of side plates 1, and the permanent magnet 1 is mounted in the permanent magnet mounting groove 1. The magnetic pole direction of the permanent magnet is perpendicular to the moving direction of the moving contact, which more effectively attracts the arc into the arc extinguishing chamber, accelerates the extinguishing of the arc, improves the breaking performance of the disconnector, and can break a larger current. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0017] Attached Figure 1 It is a schematic diagram of the contact module structure in Example 1 of the utility model.
[0018] Attached Figure 2 It is a schematic diagram of the arc extinguishing chamber in Example 1 of the utility model.
[0019] Attached Figure 3 It is a schematic diagram of the exploded view of the arc extinguishing chamber in Example 1 of the utility model.
[0020] Attached Figure 4 It is a schematic diagram of the arc extinguishing chamber in Example 2 of the utility model.
[0021] Attached Figure 5 It is a schematic diagram of the exploded view of the arc extinguishing chamber in Embodiment 2 of the present utility model. DETAILED DESCRIPTION
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are part of the embodiments of this application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this application.
[0023] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the description of this application are only for the purpose of illustration and do not represent the only implementation.
[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0025] In this application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first feature is in direct contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0026] Unless otherwise defined, all technical and scientific terms used in the description of this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the description of this application includes any and all combinations of one or more of the related listed items.
[0027] Embodiment 1
[0028] As shown in the attached Figure 1 and 2, as shown in FIG. 3, an arc extinguishing chamber, the arc extinguishing chamber 1 is arranged outside the rotation trajectory of the moving contact 2 in the contact module a. The arc extinguishing chamber 1 includes a plurality of arc extinguishing grid plates 101. Both ends of the plurality of arc extinguishing grid plates 101 are installed on a pair of side plates 102, and the pair of side plates 102 are insulating parts. The whole formed by the plurality of arc extinguishing grid plates 101 and the pair of side plates 102 is installed in the arc extinguishing cover 103. On at least one outer side surface of the arc extinguishing cover 103 corresponding to the pair of side plates 102, a first permanent magnet installation groove 103a is provided, and the first permanent magnet 104 is installed in the first permanent magnet installation groove 103a. The magnetic pole direction of the first permanent magnet 104 is perpendicular to the plane where the movement trajectory of the moving contact 2 is located.
[0029] In this embodiment, the plurality of arc extinguishing grid plates 101 are arranged in a fan shape, and the center of the fan shape faces the side of the rotation center of the moving contact 2. A notch 101a is formed on one side edge of the plurality of arc extinguishing grid plates 101 facing the rotation center of the moving contact 2.
[0030] Embodiment 2
[0031] As shown in the appendix Figure 4 and 5 In this embodiment, the arc extinguishing chamber 1 includes a plurality of arc extinguishing grid plates 101. Both ends of the plurality of arc extinguishing grid plates 101 are installed on a pair of side plates 102, and the pair of side plates 102 are insulating parts. The whole formed by the plurality of arc extinguishing grid plates 101 and the pair of side plates 102 is installed on the arc extinguishing cover 103. One end of both ends of the plurality of arc extinguishing grid plates 101 is installed on the corresponding side plate 102 and is higher than one side surface of the arc extinguishing cover 103. On the rear side surface of the arc extinguishing cover 103 facing away from the rotation center of the moving contact 2, a second permanent magnet installation groove 103b is provided, and the second permanent magnet 104' is installed in the second permanent magnet installation groove 103b. A first concave groove 101b is provided on one side edge of the plurality of arc extinguishing grid plates 101 facing the rotation center of the moving contact 2, and a second concave groove 101c is provided on one side edge of the plurality of arc extinguishing grid plates 101 facing away from the rotation center of the moving contact 2. Other structures are the same as those in Embodiment 1.
[0032] An arc extinguishing chamber provided by the present utility model, the magnetic pole direction of the permanent magnet is perpendicular to the movement direction of the moving contact, which can more effectively attract the arc into the arc extinguishing chamber, accelerate the extinguishing of the arc, improve the breaking performance of the disconnector, and thus can break a larger current.
[0033] The technical features of the above embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.
[0034] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.
Claims
1. An arc extinguishing chamber, characterized in that: The arc extinguishing chamber (1) comprises a plurality of arc extinguishing grids (101), both side ends of the plurality of arc extinguishing grids (101) are mounted on a pair of side plates (102), the plurality of arc extinguishing grids (101) and the pair of side plates (102) are combined to form a whole which is mounted in an arc extinguishing cover (103), a permanent magnet mounting groove (103a) is provided on the outer side surface of at least one side of the arc extinguishing cover (103) corresponding to the pair of side plates (102), and a permanent magnet (104) is mounted in the permanent magnet mounting groove (103a).
2. The arc extinguishing chamber according to claim 1, characterized in that: The arc extinguishing chamber (1) is arranged outside the rotation track of the moving contact (2) in the contact module (a), and the magnetic pole direction of the permanent magnet (104) is perpendicular to the plane where the moving contact (2) movement track is located.
3. An arc extinguishing chamber according to claim 1, characterized in that: The plurality of arc extinguishing grids (101) are arranged in a fan shape, with the center of the fan shape facing toward the rotation center of the moving contact (2).
4. An arc extinguishing chamber according to claim 1, wherein: A notch (101a) is formed on one side of the plurality of arc extinguishing grids (101) facing the rotation center of the moving contact (2).
5. An arc extinguishing chamber according to claim 1, characterized in that: The pair of side plates (102) are insulating parts.
6. The arc extinguishing chamber according to claim 1, wherein: A second permanent magnet installation groove (103b) is provided on the rear side surface of the arc extinguishing cover (103) away from the rotation center of the moving contact (2), and a second permanent magnet (104') is installed in the second permanent magnet installation groove (103b).
7. The arc extinguishing chamber according to claim 6, characterized in that: The plurality of arc extinguishing grids (101) are provided with a first recessed groove (101b) on one side facing the rotation center of the moving contact (2), and the plurality of arc extinguishing grids (101) are provided with a second recessed groove (101c) on one side facing away from the rotation center of the moving contact (2).
8. An arc extinguishing chamber according to claim 6, characterized in that: One of the two side ends of the plurality of arc-extinguishing grids (101) is mounted on a corresponding side plate (102) and is higher than a side surface of the arc-extinguishing cover (103).