Filter and distribution box
By using a filter without filter cotton in the low-voltage distribution box, and utilizing the staggered arrangement of the inner and outer louvers and the drainage structure, the problems of low ventilation efficiency and frequent maintenance are solved, achieving efficient ventilation and improved safety.
Patent Information
- Application Number
- CN202423057025.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-11
AI Technical Summary
In existing low-voltage distribution boxes, the use of slanted grids with filter cotton results in low ventilation efficiency and requires frequent maintenance.
The filter, designed without filter cotton, uses staggered outer and inner louvers, combined with a drainage structure and a guide slope, to block dust and rainwater from entering. Deposits are discharged through the drain, improving ventilation efficiency and eliminating maintenance.
It achieves efficient ventilation, prevents dust and rainwater from entering the distribution box, improves the safety level, and eliminates the hassle of filter cotton maintenance.
Smart Images
Figure CN223517175U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to low voltage power distribution technical field especially relates to filter and distribution box. BACKGROUND
[0002] In the field of low voltage distribution box, the box body material can adopt metal material or sheet molding compound (SMC) material. Compared with metal material, the SMC material distribution box has the following advantages: ① non-conductive, when touching the live wire, the SMC distribution box will not constitute an electrical hazard, reducing the risk of electric shock; ② no need for grounding, simplifying the installation process, saving time and cost; ③ the production cost is usually lower than metal; ④ light weight, much lighter than metal, easier to handle and install; ⑤ easy to manufacture, can be produced by mold, reducing assembly time and cost; ⑥ corrosion resistance and durability, suitable for harsh environments, etc. Therefore, the SMC material distribution box is more and more widely used.
[0003] Most of the filters for power distribution equipment use inclined grid to filter cotton to prevent dust and water. The filter cotton affects the ventilation efficiency, especially after the filter cotton is blocked by dust, the ventilation efficiency will be lower and lower. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at providing a filter and distribution box, which has no filter cotton design, high ventilation efficiency and maintenance-free.
[0005] To achieve this purpose, the utility model adopts the following technical solutions:
[0006] The filter comprises:
[0007] The first filter unit comprises an outer louvered plate and an annular coaming, the annular coaming is arranged on one side of the outer louvered plate and forms a containing cavity with the outer louvered plate, the outer louvered plate is provided with a drain port and a plurality of outer louvered openings, and the drain port and the outer louvered openings are in communication with the containing cavity;
[0008] The second filter unit comprises an inner louvered plate, the inner louvered plate is arranged in the containing cavity, the inner louvered plate is provided with a plurality of inner louvered openings, the opening direction of the inner louvered openings is opposite to that of the outer louvered openings, and the inner louvered openings and the outer louvered openings are arranged in a staggered manner.
[0009] As an optional solution of the filter, the first filter unit further comprises:
[0010] The water baffle is arranged on the side of the annular coaming away from the outer louvered plate, the water baffle is arranged opposite to the drain port, and the second filter unit is arranged between the water baffle and the drain port.
[0011] As an optional solution of the filter, a flow guide slope is arranged on the inner side wall of the annular enclosure between the water baffle and the drain port.
[0012] As an optional solution of the filter, the filter further comprises:
[0013] The third filter unit comprises a partition plate having a plurality of filter openings, the partition plate is arranged in the accommodating cavity and clamped between the outer louver plate and the inner louver plate, first and second grooves are arranged on both sides of the partition plate respectively, the first groove is in communication with the second groove through the filter openings, a first drain gap is arranged on one end of the side wall of the first groove close to the drain port, and a second drain gap is arranged on one end of the side wall of the second groove close to the drain port.
[0014] As an optional solution of the filter, the opening inner diameter of the filter opening gradually increases from one end close to the outer louver plate to the other end.
[0015] As an optional solution of the filter, the outer louver opening, the filter opening and the inner louver opening are arranged in a staggered manner.
[0016] As an optional solution of the filter, the inner side wall of the annular enclosure is provided with a plurality of first positioning cut edges, the outer edge of the inner louver plate is provided with a plurality of second positioning cut edges, and the second positioning cut edges abut against the first positioning cut edges; and / or
[0017] The outer edge of the partition plate is provided with a plurality of third positioning cut edges, and the third positioning cut edges abut against the first positioning cut edges.
[0018] As an optional solution of the filter, a positioning lifting platform is arranged on one side of the bottom of the inner louver plate close to the partition plate, a fourth positioning cut edge is arranged on the bottom of the partition plate, the fourth positioning cut edge abuts against the positioning lifting platform, and the opening length of the first drain gap and the second drain gap is greater than the length of the positioning lifting platform extending in the first direction; and / or
[0019] A plurality of positioning clamping protrusions are circumferentially arranged on the inner wall surface of the annular enclosure, and the outer wall surface of the inner louver plate is clamped with the positioning clamping protrusions.
[0020] As an optional solution of the filter, the filter further comprises a mounting ring, the inner wall surface of the mounting ring is provided with an inner thread, the outer wall surface of the annular enclosure is provided with an outer thread, and the annular enclosure is threadedly connected with the mounting ring; and / or
[0021] The outer wall surface of the mounting ring is provided with a plurality of anti-skid structures; and / or
[0022] The outer wall surface of the mounting ring is circumferentially spaced with a plurality of connecting ears, and the connecting ears are provided with connecting holes.
[0023] The power distribution box comprises a box body and the filter according to the technical scheme described above, and the filter is mounted on the box body.
[0024] Compared with the prior art, the power distribution box has the following beneficial effects:
[0025] The filter provided by the utility model, the inner louvered baffle plate of the second filter unit is installed into the containing cavity formed by the outer louvered baffle plate and the annular enclosing plate, wherein the opening direction of the inner louvered baffle opening is opposite to and misaligned with the opening direction of the outer louvered baffle opening, for example, when the opening direction of the outer louvered baffle opening is downward and the opening direction of the inner louvered baffle opening is upward, not only can the dust and rainwater be blocked from entering the interior of the equipment protected by the filter, but also the ventilation efficiency of the filter is improved due to the absence of filter cotton. The deposited dust and rainwater can be retained in the containing cavity and flow out from the water outlet of the outer louvered baffle plate, and the ventilation efficiency is high and maintenance is free.
[0026] The filter is installed on the box body of the power distribution box, dust and rainwater can be prevented from entering the interior of the box body, and the use safety level of the power distribution box is improved. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 is an assembly schematic view of the filter in the embodiment of the utility model;
[0028] Figure 2 is an explosion schematic view of the filter in the embodiment of the utility model;
[0029] Figure 3 is a sectional view of the filter in the embodiment of the utility model;
[0030] Figure 4 is a working principle view of the filter in the embodiment of the utility model;
[0031] Figure 5 is a structure schematic view of the first filter unit in the embodiment of the utility model;
[0032] Figure 6 is a structure schematic view of the second filter unit from a first perspective in the embodiment of the utility model;
[0033] Figure 7 is a structure schematic view of the second filter unit from a second perspective in the embodiment of the utility model;
[0034] Figure 8 is a structure schematic view of the third filter unit from a first perspective in the embodiment of the utility model;
[0035] Figure 9 is a structural schematic view of the third filtering unit from a second perspective in an embodiment of the utility model;
[0036] Figure 10 is a structural schematic view of the third filtering unit from a third perspective in an embodiment of the utility model;
[0037] Figure 11 is a sectional view of the third filtering unit in an embodiment of the utility model;
[0038] Figure 12 is a structural schematic view of the mounting ring in an embodiment of the utility model.
[0039] In the figure:
[0040] 1, first filtering unit; 2, second filtering unit; 3, third filtering unit; 4, mounting ring;
[0041] 11, outer shutter plate; 111, drainage port; 112, outer shutter opening; 113, marking groove; 12, annular coaming; 121, flow guide slope; 122, first positioning cut edge; 123, positioning clamping convex; 124, external thread; 13, water baffle;
[0042] 21, inner shutter plate; 211, inner shutter opening; 212, second positioning cut edge; 213, positioning lifting platform;
[0043] 31, partition plate; 311, filtering opening; 312, first recess; 3121, first drainage gap; 313, second recess; 3131, second drainage gap; 314, third positioning cut edge; 315, fourth positioning cut edge;
[0044] 41, connecting lug; 411, connecting hole; 42, internal thread; 43, anti-skid structure. DETAILED DESCRIPTION
[0045] The utility model will be further explained in detail in combination with the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the utility model, and not limit the utility model. In addition, it needs to be explained that in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.
[0046] In the description of the utility model, unless another definite provision and limitation, the term "link", "connect", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication or two element mutual action relation.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.
[0047] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features are not direct contact but contact through the additional feature between them.Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.
[0048] In the description of the embodiment, the terms "up", "down", "right", etc. Orientation or position relationship is based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.
[0049] In order to add filter cotton without increasing, improve ventilation efficiency and maintenance free, the embodiment provides a filter and distribution box, as follows Figures 1 to 12 The specific content of the embodiment is described in detail.It should be noted that the first direction mentioned in the embodiment is Figure 2 X direction in the above.
[0050] As Figures 1 to 6As shown, the filter in the embodiment includes a first filter unit 1 and a second filter unit 2. The first filter unit 1 includes an outer louver plate 11 and a ring-shaped enclosing plate 12, the ring-shaped enclosing plate 12 is arranged on one side of the outer louver plate 11 and forms a containing cavity together with the outer louver plate 11, the outer louver plate 11 is provided with a drain port 111 and a plurality of outer louver openings 112, the plurality of outer louver openings 112 are located at an upper position of the outer louver plate 11, the drain port 111 is located at a lower position of the outer louver plate 11, and the drain port 111 and the outer louver openings 112 are in communication with the containing cavity. The second filter unit 2 includes an inner louver plate 21, the inner louver plate 21 is arranged in the containing cavity of the first filter unit 1, the inner louver plate 21 is provided with a plurality of inner louver openings 211, the inner louver openings 211 are opposite to the opening direction of the outer louver openings 112, and the inner louver openings 211 are arranged in a staggered manner with the outer louver openings 112.
[0051] The filter provided by the utility model, the inner louver plate 21 of the second filter unit 2 is installed into the containing cavity formed by the outer louver plate 11 and the ring-shaped enclosing plate 12, wherein the inner louver openings 211 are opposite to the opening direction of the outer louver openings 112 and are arranged in a staggered manner, for example, when the opening direction of the outer louver openings 112 is downward and the opening direction of the inner louver openings 211 is upward, not only can the filter effectively block dust and rainwater from entering the interior of the equipment protected by the filter, but also the ventilation efficiency of the filter is improved due to the absence of filter cotton. The deposited dust and rainwater can be retained in the containing cavity and flow out of the drain port 111 of the outer louver plate 11, and the ventilation efficiency is high and the filter is maintenance-free.
[0052] Further, as shown in Figure 5 The first filter unit 1 further includes a water baffle 13, the water baffle 13 is arranged on the side of the ring-shaped enclosing plate 12 away from the outer louver plate 11, the water baffle 13 is arranged opposite to the drain port 111, and the second filter unit 2 is arranged between the water baffle 13 and the drain port 111. By installing the water baffle 13 on one side of the ring-shaped enclosing plate 12, on the one hand, the deposited dust and rainwater are facilitated, and on the other hand, the deposited dust and rainwater can only flow out of the drain port 111 and cannot flow out of the water baffle 13.
[0053] Further, as shown in Figure 3 In combination with Figure 5 The inner side wall of the ring-shaped enclosing plate 12 is provided with a flow guide inclined surface 121 between the water baffle 13 and the drain port 111, and the flow guide inclined surface 121 is arranged downward from the water baffle 13 to the drain port 111. By additionally arranging the flow guide inclined surface 121 with gradually reduced height, the dust and rainwater are facilitated to flow out of the drain port 111 quickly. Further, as shown in Figure 2 The outer louver plate 11 is further provided with a marking groove 113, which is designed for the beauty of the filter and can be engraved with numbers or trademarks.
[0054] Further, as shown in Figures 3 to 10 , the filter further comprises a third filtering unit 3, the third filtering unit 3 comprises a partition plate 31 with a plurality of filtering openings 311, the partition plate 31 is arranged in the accommodating cavity and is clamped between the outer louver plate 11 and the inner louver plate 21, the partition plate 31 is provided with a first recess 312 and a second recess 313 on two sides respectively, the first recess 312 is communicated with the second recess 313 through the filtering openings 311, the side wall of the first recess 312 is provided with a first drainage gap 3121 at one end close to the drain port 111, and the side wall of the second recess 313 is provided with a second drainage gap 3131 at one end close to the drain port 111. The wind flow schematic diagram is Figure 4 the solid line arrow direction, the wind enters the cavity composed of the first recess 312 of the partition plate 31 and the outer louver plate 11 from the outer louver opening 112, then enters the cavity composed of the second recess 313 of the partition plate 31 and the inner louver plate 21 through the filtering openings 311 of the partition plate 31, and finally flows out of the filter from the inner louver opening 211. The water flow schematic diagram is Figure 4 the dashed line arrow direction, the water enters the cavity composed of the first recess 312 of the partition plate 31 and the outer louver plate 11 from the outer louver opening 112, part of the water flows out from the first drainage gap 3121 and the drain port 111 due to resistance and its own gravity, a small amount of water continues to advance and enters the cavity composed of the second recess 313 of the partition plate 31 and the inner louver plate 21 through the filtering openings 311 of the partition plate 31, and then begins to drop due to resistance and its own gravity and flows out from the second drainage gap 3131 and the drain port 111. The above is the path of the wind flow and the water flow, and the protection level measured in the laboratory can reach IP44.
[0055] Optionally, as shown in Figure 3 in combination with Figure 11 , the inner diameter of the filtering opening 311 gradually increases from one end close to the outer louver opening 112 to the other end. The cross-sectional view of the filtering opening 311 is in a trapezoidal structure, when the filter is used for exhaust air, a chimney effect can be formed, which is more conducive to the exhaust of hot air from the filter.
[0056] Optionally, as shown in Figure 3 , the outer louver opening 112, the filtering opening 311 and the inner louver opening 211 are arranged in a staggered manner. When the filter is used for intake air, the water flow in each direction can be blocked, and the amount of water flowing into the filter can be reduced. As shown in Figure 4 , the inner louver opening 211 is the air outlet of the filter, when the filter is used for exhaust air, the inner louver opening 211 can also be used as the air inlet of the filter.
[0057] Exemplarily, the inner side wall of the annular coaming 12 is provided with a plurality of first positioning cut edges 122, the outer edge of the inner louver plate 21 is provided with a plurality of second positioning cut edges 212, the second positioning cut edges 212 abut against the first positioning cut edges 122; and / or the outer edge of the partition plate 31 is provided with a plurality of third positioning cut edges 314, the third positioning cut edges 314 abut against the first positioning cut edges 122. As shown in Figures 5 to 10 The first positioning cut edges 122, the second positioning cut edges 212 and the third positioning cut edges 314 in the embodiment are all provided with three, for fixing the upper surface, the left surface and the right surface of the inner louver plate 21 and the partition plate 31.
[0058] Exemplarily, as shown in Figure 3 , Figure 7 In combination with Figure 8 As shown, the inner louver plate 21 is provided with a positioning lifting platform 213 near the bottom of one side close to the partition plate 31, the bottom of the partition plate 31 is provided with a fourth positioning cut edge 315, the fourth positioning cut edge 315 abuts against the positioning lifting platform 213, and the opening length of the first drainage gap 3121 and the second drainage gap 3131 is greater than the length of the positioning lifting platform 213 extending in the first direction. The fourth positioning cut edge 315 contacts the upper plane of the positioning lifting platform 213, so that the partition plate 31 is fixed firmly. Since the opening length of the first drainage gap 3121 and the second drainage gap 3131 is greater than the length of the positioning lifting platform 213 extending in the first direction, it is ensured that the positioning lifting platform 213 does not block the first drainage gap 3121 and the second drainage gap 3131, so that the water entering the filter will finally flow into the bottom of the containing cavity along the positioning lifting platform 213, and then be discharged from the filter through the drain port 111.
[0059] Exemplarily, the inner wall surface of the annular coaming 12 is circumferentially spaced apart a plurality of positioning clamping protrusions 123, and the outer wall surface of the inner louver plate 21 is clamped with the positioning clamping protrusions 123. When the inner louver plate 21 is put into the annular coaming 12, by adding a plurality of positioning clamping protrusions 123, the positioning clamping protrusions 123 can block the inner louver plate 21 from falling out of the annular coaming 12, thereby improving the installation stability of the inner louver plate 21.
[0060] Further, as shown in Figure 1 In combination with Figure 12As shown, the filter further comprises a mounting ring 4, an inner wall surface of the mounting ring 4 is provided with an inner thread 42, an outer wall surface of the annular coaming 12 is provided with an outer thread 124, and the annular coaming 12 is threadedly connected with the mounting ring 4. The mounting ring 4 is fixed by tool-free installation. In the actual installation process, a mounting hole is formed on a side wall of a box body of the distribution box, the annular coaming 12 on the outer louver plate 11 penetrates into the box body through the mounting hole, the mounting ring 4 is placed into the box body and is threadedly connected with the annular coaming 12, the outer louver plate 11 and the mounting ring 4 are close to each other and are clamped on the side wall of the box body, and the installation of the filter is completed. The outer wall surface of the mounting ring 4 is provided with a plurality of anti-skid structures 43, which helps to increase the friction and avoid hand slipping when the mounting ring 4 is screwed. The anti-skid structure 43 can be, but is not limited to, an anti-skid protrusion, an anti-skid groove or an anti-skid line, and the like, which is not limited here. The outer wall surface of the mounting ring 4 is circumferentially and spacedly provided with a plurality of connecting ears 41, the connecting ears 41 are provided with connecting holes 411, the distribution box comprises a cooling fan and a fastener, the fastener is used to penetrate through a mounting shell of the cooling fan and is connected with the connecting holes 411 on the mounting ring 4, and the installation of the cooling fan is realized. By additionally arranging the cooling fan, the air flow is facilitated to be accelerated.
[0061] The embodiment further provides a distribution box, characterized in that the distribution box comprises a box body and the above-mentioned filter, and the filter is mounted on the box body. The filter cotton is not additionally arranged, and the dust and rainwater can be prevented from entering the inside of the box body, so that the use safety level of the distribution box is ensured, and the maintenance is free.
[0062] Obviously, the above-mentioned embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation on the embodiments of the utility model. For the ordinary skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the utility model. Here, all the embodiments are not required to be exhausted. Any modification, equivalent replacement and improvement made in the spirit and principle of the utility model should be included in the protection scope of the utility model claim.
Claims
1. Filter, characterized in that The filter comprises: a first filtering unit (1) comprising an outer louver plate (11) and a ring-shaped enclosing plate (12), the ring-shaped enclosing plate (12) is arranged on one side of the outer louver plate (11) and forms a containing cavity together with the outer louver plate (11), the outer louver plate (11) is provided with a drainage opening (111) and a plurality of outer louver openings (112), the drainage opening (111) and the outer louver openings (112) are in communication with the containing cavity; a second filtering unit (2) comprising an inner louver plate (21), the inner louver plate (21) is arranged in the containing cavity, the inner louver plate (21) is provided with a plurality of inner louver openings (211), the opening direction of the inner louver openings (211) is opposite to that of the outer louver openings (112), and the inner louver openings (211) are arranged in a staggered manner with the outer louver openings (112).
2. The filter of claim 1, wherein, The first filtering unit (1) further comprises: a water baffle (13) arranged on the side of the ring-shaped enclosing plate (12) away from the outer louver plate (11), the water baffle (13) is arranged opposite to the drainage opening (111), and the second filtering unit (2) is arranged between the water baffle (13) and the drainage opening (111).
3. The filter of claim 2, wherein, A guide slope (121) is arranged on the inner side wall of the ring-shaped enclosing plate (12) between the water baffle (13) and the drainage opening (111), and the guide slope (121) is arranged obliquely from the water baffle (13) to the drainage opening (111).
4. The filter of claim 1, wherein, The filter further comprises: a third filtering unit (3) comprising a partition plate (31) provided with a plurality of filtering openings (311), the partition plate (31) is arranged in the containing cavity and is clamped between the outer louver plate (11) and the inner louver plate (21), the two sides of the partition plate (31) are respectively provided with a first groove (312) and a second groove (313), the first groove (312) is in communication with the second groove (313) through the filtering openings (311), one end of the side wall of the first groove (312) close to the drainage opening (111) is provided with a first drainage gap (3121), and one end of the side wall of the second groove (313) close to the drainage opening (111) is provided with a second drainage gap (3131).
5. The filter of claim 4, wherein, The opening inner diameter of the filtering opening (311) gradually increases from one end close to the outer louver opening (112) to the other end.
6. The filter of claim 4, wherein, The outer louver opening (112), the filtering opening (311) and the inner louver opening (211) are arranged in a staggered manner.
7. The filter of claim 4, wherein, The inner side wall of the ring-shaped enclosing plate (12) is provided with a plurality of first positioning cut edges (122), the outer edge of the inner louver plate (21) is provided with a plurality of second positioning cut edges (212), the second positioning cut edges (212) abut against the first positioning cut edges (122); and / or The outer edge of the partition plate (31) is provided with a plurality of third positioning cut edges (314), and the third positioning cut edges (314) abut against the first positioning cut edges (122).
8. The filter of claim 4, wherein, The inner shutter plate (21) is provided with a positioning lifting platform (213) on one side close to the partition plate (31), the bottom of the partition plate (31) is provided with a fourth positioning cut edge (315), the fourth positioning cut edge (315) is in abutment with the positioning lifting platform (213), the opening length of the first drainage gap (3121) and the second drainage gap (3131) is greater than the length of the positioning lifting platform (213) extending in the first direction; and / or The inner wall surface of the annular enclosing plate (12) is circumferentially spaced apart from a plurality of positioning clamping protrusions (123), and the outer wall surface of the inner shutter plate (21) is clamped with the positioning clamping protrusions (123).
9. The filter according to any one of claims 1 to 8, characterized in that The filter further comprises a mounting ring (4), the inner wall surface of the mounting ring (4) is provided with an internal thread (42), the outer wall surface of the annular enclosing plate (12) is provided with an external thread (124), and the annular enclosing plate (12) is threadedly connected with the mounting ring (4); and / or The outer wall surface of the mounting ring (4) is provided with a plurality of anti-skid structures (43); and / or The outer wall surface of the mounting ring (4) is circumferentially spaced apart from a plurality of connecting ears (41), and the connecting ears (41) are provided with a connection.
10. A distribution box characterized by A filter as claimed in any one of claims 1-9 is mounted on a box.