Dustproof and waterproof structure of air inlet
By designing the maze-like channel and barrier part at the air inlet of the inverter, the problems of dustproof net blockage and inability to waterproof are solved, and better ventilation and heat dissipation effect and dustproof and waterproof performance are achieved.
Patent Information
- Application Number
- CN202421888450.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-06
AI Technical Summary
The dustproof net of the existing inverter is easily blocked during use, affecting the air inlet and heat dissipation effect, and cannot prevent rainwater from entering, increasing the volume of the equipment and production cost.
A dust-proof and waterproof structure in the air inlet is designed, and a maze-like channel and barrier part are combined to form a barrier space and channel through the bend and folding edges of the deflector, so as to effectively intercept and collect impurities and rainwater in the air.
Effectively prevent impurities and rainwater from entering the inverter, ensure ventilation and heat dissipation effect, reduce equipment volume and production costs, and improve dust and waterproofing effects.
Smart Images
Figure CN222916365U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of frequency converters, and particularly relates to a dust and water proof structure for an air inlet. Background Art
[0002] A frequency converter is a power control device that applies frequency conversion technology and microelectronics technology to control an AC motor by changing the working power frequency of the motor, and is widely used in various fields.
[0003] The existing outdoor frequency converters usually install dust-proof nets at the air inlets of the cabinets to prevent foreign impurities from entering the cabinets when drawing in external air for heat exchange and heat dissipation, which affects the normal operation of the frequency converters. Although the installation of dust-proof nets can filter some impurities in the air, with the use of the dust-proof nets, some impurities will adhere to the dust-proof nets, causing the dust-proof nets to be blocked, affecting the air intake volume of the cabinets, and further affecting the heat dissipation effect of the frequency converters;
[0004] Secondly, the dust-proof net cannot prevent water, and rainwater easily enters the frequency converter through the dust-proof net. If a waterproof effect is required, an additional structure needs to be added at the dust-proof net, thus increasing the volume and production cost of the frequency converter. Summary of the Utility Model
[0005] In view of this, the purpose of the utility model is to provide a dust and water proof structure for an air inlet to solve the technical problems that in the prior art, during the use of the dust-proof net, some impurities adhere to the dust-proof net, causing the dust-proof net to be blocked, affecting the air intake volume of the frequency converter, and further affecting the heat dissipation effect of the frequency converter, and at the same time, the dust-proof net cannot prevent rainwater from entering the frequency converter.
[0006] The utility model is realized through the following technical solutions:
[0007] A dust and water proof structure for an air inlet includes an installation frame. A lower installation plate is fixedly connected to the rear of the installation frame. Along the depth direction of the lower installation plate, a plurality of flow guiding plates are evenly arranged on the lower installation plate. The middle of the flow guiding plate bends outwards to form a blocking portion, and a maze-like channel is formed by enclosing between adjacent two flow guiding plates.
[0008] Further, the convex surface of the blocking portion faces the inlet and outlet of the maze-like channel, and a first baffle and a second baffle are respectively fixedly connected to the convex surface and the concave surface of adjacent two flow guiding plates;
[0009] The first baffle and the second baffle respectively enclose a blocking space with the convex surface of the flow guiding plate and the concave surface of the flow guiding plate, and the opening of the blocking space faces the inlet of the maze-like channel.
[0010] Furthermore, both side portions of the deflector are perpendicular to the opening of the mounting frame and the air inlet, respectively, and both side portions of the deflector are folded towards the side away from the blocking portion to form flanges, and the flanges away from the mounting frame extend into the labyrinth channel.
[0011] Furthermore, the lower mounting plate is inclined and mounted behind the mounting frame, and the bottom of the deflector is attached to the surface of the lower mounting plate;
[0012] Both the upper and lower sides of the lower mounting plate are bent upwards and downwards, respectively, to form a first mounting portion and a first limiting portion. The first mounting portion is used for fixedly connecting with the mounting frame, and the first limiting portion is located in front of the outlet of the labyrinth channel.
[0013] Furthermore, a plurality of jacks are provided on the inclined surface of the lower mounting plate, and the bottom of the deflector protrudes downwards to form an insertion portion, and the insertion portion is in plug-in fit with the jacks.
[0014] Furthermore, a notch is provided at the bottom of the insertion portion, and the notch extends upwards along the insertion portion.
[0015] Furthermore, an upper mounting plate is horizontally mounted behind the mounting frame, and the upper mounting plate is located at the top of the deflector;
[0016] Both the front and rear sides of the upper mounting plate are bent upwards and downwards, respectively, to form a second mounting portion and a second limiting portion. The second mounting portion is used for fixedly connecting with the mounting frame, and the second limiting portion is located in front of the outlet of the labyrinth channel.
[0017] Furthermore, the top of the flange has a fixing portion, and the fixing portion is integrally formed with the flange and is horizontally bent.
[0018] The beneficial effects of the present utility model are as follows:
[0019] When the air inlet dustproof and waterproof structure of the present utility model is in use, since the blocking portion protrudes behind the inlet of the labyrinth channel, when the outside air enters the cabinet through the labyrinth channel, the blocking portion blocks and intercepts impurities or rainwater in the air, causing them to stay in front of the windward surface of the blocking portion. Subsequently, the air continues to flow along the labyrinth channel around the blocking portion. During the flowing process, the air flows towards the concave surface of the blocking portion of the other deflector, and the blocking portion of the other deflector performs secondary blocking and interception on the impurities or rainwater in the air. Finally, the air flows into the cabinet for heat exchange to achieve heat dissipation;
[0020] Impurities or rainwater accumulated in the labyrinth channels are collected on the lower mounting plate along the guide plate under the influence of gravity, thus preventing impurities or rainwater from entering the cabinet interior or adhering to the guide plate to cause blockage of the labyrinth channels, and ensuring normal ventilation and heat dissipation of the frequency converter.
[0021] Secondly, the dust-proof and heat-dissipating structure of the present utility model is compact and small. Compared with the dust-proof net hole-type ventilation structure in the prior art, the labyrinth channels connect multiple holes, with a larger air intake, better ventilation and heat dissipation effects, and can simultaneously prevent rainwater from entering the cabinet through the air inlet during the ventilation and heat dissipation process. Description of the Drawings
[0022] Figure 1 It is a schematic connection diagram of the mounting frame and the cabinet of the air inlet dust-proof and waterproof structure of the present utility model.
[0023] Figure 2 It is a schematic structural diagram of the air inlet dust-proof and waterproof structure of the present utility model.
[0024] Figure 3 It is a top view of the guide plate of the air inlet dust-proof and waterproof structure of the present utility model.
[0025] Figure 4 It is a schematic connection diagram of the guide plate and the lower mounting plate of the air inlet dust-proof and waterproof structure of the present utility model.
[0026] Figure 5 For the present utility model Figure 4 Enlarged view of part A.
[0027] Figure 6 It is a schematic structural diagram of the insertion part of the guide plate of the air inlet dust-proof and waterproof structure of the present utility model.
[0028] Figure 7 It is a schematic structural diagram of the lower mounting plate of the air inlet dust-proof and waterproof structure of the present utility model.
[0029] Figure 8 It is a schematic structural diagram of the upper mounting plate of the air inlet dust-proof and waterproof structure of the present utility model.
[0030] In the figure: 1 - air inlet, 2 - cabinet, 3 - mounting frame;
[0031] 4 - lower mounting plate, 41 - first mounting part, 42 - first limiting part, 43 - jack, 44 - insertion part, 45 - notch;
[0032] 5 - guide plate, 51 - blocking part, 511 - first baffle, 512 - second baffle, 513 - blocking space, 52 - folded edge, 53 - fixing part;
[0033] 6 - labyrinth channel;
[0034] 7 - Upper mounting plate, 71 - Second mounting portion, 72 - Second limiting portion. Specific embodiments
[0035] Typical embodiments embodying the features and advantages of the present utility model will be specifically described in the following description. It should be understood that the present utility model can have various variations in different embodiments, all of which do not depart from the scope of the present utility model, and the descriptions and illustrations therein are essentially for illustrative purposes and not intended to limit the present utility model.
[0036] In the description of this application, the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.
[0037] Please refer to Figures 1 to 7 , the present utility model provides a technical solution: a dust and waterproof structure for the air inlet, including a cabinet body 2 having an air inlet 1, a rectangular mounting frame 3 is fixedly connected outside the air inlet 1, and a lower mounting plate 4 is fixedly connected to the rear of the mounting frame 3;
[0038] Along the depth direction of the lower mounting plate 4, a plurality of flow guide plates 5 are evenly arranged on the lower mounting plate 4, and one side of the flow guide plate 5 away from the mounting frame 3 extends into the cabinet body 2 through the air inlet 1;
[0039] The middle part of the flow guide plate 5 is bent and protruded outwards to form a blocking portion 51, the blocking portion 51 is in a V shape, and a maze - like channel 6 is formed by enclosing between adjacent two flow guide plates 5;
[0040] When the outside air enters the cabinet body 2 through the maze - like channel 6, since the blocking portion 51 protrudes behind the inlet of the maze - like channel 6, when the outside air enters the cabinet body 2 through the maze - like channel 6, the blocking portion 51 blocks and intercepts impurities or rainwater in the air, making them stay in front of the windward surface of the blocking portion 51. Subsequently, the air continues to flow along the maze - like channel 6 around the blocking portion 51. During the flowing process, the air flows towards the concave surface of the blocking portion 51 of another flow guide plate 5, and the blocking portion 51 of another flow guide plate 5 performs secondary blocking and interception on impurities or rainwater in the air. Finally, the air flows into the cabinet body 2 for heat exchange to achieve heat dissipation;
[0041] Impurities or rainwater accumulated in the labyrinth channel 6 are collected downward along the guide plate 5 under the influence of gravity on the lower mounting plate 4, thereby preventing impurities or rainwater from entering the interior of the cabinet 2 or adhering to the guide plate 5 to cause blockage of the labyrinth channel 6, and ensuring normal ventilation and heat dissipation of the frequency converter;
[0042] Secondly, the dust-proof and heat-dissipating structure of the present utility model is compact and small. Compared with the dust-proof net hole-type ventilation structure in the prior art, the labyrinth channel 6 connects multiple holes, has a larger air intake volume, better ventilation and heat dissipation effects, and can simultaneously prevent rainwater from entering the cabinet 2 through the air inlet 1 during the ventilation and heat dissipation process.
[0043] Please refer to Figure 3 、 Figure 5 and Figure 6 As shown in, the convex surface of the blocking portion 51 faces the inlet and outlet of the labyrinth channel 6, and the first baffle 511 and the second baffle 512 are respectively fixedly connected to the convex surface and the concave surface of the adjacent two guide plates 5; the first baffle 511 and the second baffle 512 respectively enclose a U-shaped blocking space 513 with the convex surface of the guide plate 5 and the concave surface of the guide plate 5, and the opening of the blocking space 513 faces the inlet of the labyrinth channel 6;
[0044] When the outside air enters and flows in the labyrinth channel 6, since the convex surface of the blocking portion 51 faces the inlet of the labyrinth channel 6, the impurities or rainwater in the air can be initially blocked and intercepted by the blocking portion 51. Subsequently, the air continues to flow along the convex surface of the blocking portion 51, and most of the air flows into the blocking space 513 formed by the first baffle 511 and the convex surface of the guide plate 5. The impurities or rainwater in the air can be further blocked and intercepted by the blocking space 513. A small amount of air and the air flowing out of the blocking space 513 subsequently flow along the concave surface of the other guide plate 5 into the blocking space 513 formed by the second baffle 512 and the concave surface of the guide plate 5. The impurities or rainwater in the air are blocked and intercepted again by this blocking space 513, so as to more completely block and intercept the impurities or rainwater entering the labyrinth channel 6. Finally, the air flows into the cabinet 2 for heat exchange to achieve heat dissipation.
[0045] Please refer to Figure 3 As shown in, the two sides of the guide plate 5 are respectively perpendicular to the opening of the mounting frame 3 and the air inlet 1, so that the inlet and outlet of the labyrinth channel 6 formed between two adjacent guide plates 5 are rectangular, so as to obtain the maximum air intake volume, and the air entering the labyrinth channel 6 can contact the convex surface of the blocking portion 51 at a certain angle, which is beneficial to preventing impurities or rainwater in the air from entering the cabinet 2;
[0046] On both sides of the deflector 5, parts are respectively folded towards one side away from the blocking part 51 to form flanges 52, and the flange 52 away from the mounting frame 3 extends into the labyrinth-shaped channel 6. When the blocking space 513 blocks impurities or rainwater in the air, the air continues to flow along the concave surface of the blocking part 51. At this time, the flange 52 away from the mounting frame 3 extends into the labyrinth-shaped channel 6, and can block and intercept the flowing air again to remove impurities or rainwater in the air, further improving the dust-proof and waterproof effects.
[0047] Please refer to Figure 4 、 Figure 6 and Figure 7 , the lower mounting plate 4 is inclined and mounted behind the mounting frame 3, the bottom of the deflector 5 is attached to the surface of the lower mounting plate 4, and the lower ends of the first blocking plate 512 and the second blocking plate 513 do not contact the surface of the lower mounting plate 4, so that the impurities or rainwater blocked by the deflector 5 and the blocking space 513 can move along the lower mounting plate 4 to the opening of the mounting frame 3 under the influence of gravity, and finally fall to the outside, thus avoiding the accumulation of impurities or rainwater in this structure;
[0048] On the upper and lower sides of the lower mounting plate 4, upward and downward bends are respectively formed to form a first mounting portion 41 and a first limiting portion 42. The first mounting portion 41 is used for fixedly connecting with the mounting frame 3. The first limiting portion 42 is located in front of the outlet of the labyrinth-shaped channel 6, and the outlet of the labyrinth-shaped channel 6 can be blocked through the first limiting portion 42 to prevent impurities or rainwater from entering the cabinet body 2.
[0049] A plurality of jacks 43 are formed on the inclined surface of the lower mounting plate 4. The bottom of the deflector 5 protrudes downward to form an insertion portion 44. The insertion portion 44 is in plug-in fit with the jacks 43. Through the cooperation of the insertion portion 44 and the jacks 43, it is beneficial to quickly install the deflector 5 on the lower mounting plate 4.
[0050] A notch 45 is formed at the bottom of the insertion portion 44, and the notch 45 extends upward along the insertion portion 44. By forming the notch 45 at the bottom of the insertion portion 44, the bottom of the insertion portion 44 can be divided into two parts, which is beneficial to the deformation of the insertion portion 44 to be clamped in the jacks 43, so as to stably install the deflector 5 on the lower mounting plate 4.
[0051] Please refer to Figure 2 and Figure 8 , a upper mounting plate 7 is horizontally mounted behind the mounting frame 3, and the upper mounting plate 7 is located at the top of the deflector 5. By mounting the upper mounting plate 7 at the top of the deflector 5, the top of the deflector 5 can be limited, thereby improving the stability of the installation of the deflector 5;
[0052] The front and rear sides of the upper mounting plate 7 are bent upward and downward respectively to form a second mounting portion 71 and a second limiting portion 72. The second mounting portion 71 is used for fixedly connecting with the mounting frame 3. The second limiting portion 72 is located in front of the outlet of the labyrinth channel 6. The outlet of the labyrinth channel 6 can be further blocked by the second limiting portion 72 to prevent impurities or rainwater from entering the cabinet body 2.
[0053] Please refer to Figure 3 and Figure 5 , the top of the folded edge 52 has a fixing portion 53. The fixing portion 53 is integrally formed with the folded edge 52 and is bent horizontally. The flow guide plate 5 and the upper mounting plate 7 can be bolted together through the fixing portion 53, further improving the structural stability of the present invention.
[0054] Finally, it should be noted that the above embodiments are only the preferred embodiments of the present invention, and the scope of protection of the present invention cannot be limited thereby. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.
Claims
1. A dust and water proof structure for an air inlet, characterized by: The invention comprises a mounting frame (3), a lower mounting plate (4) being fixedly connected to the rear of the mounting frame (3), a plurality of guide plates (5) being evenly arranged on the lower mounting plate (4) along the depth direction of the lower mounting plate (4), the middle portion of the guide plates (5) being bent outwardly and protruding to form a blocking portion (51), and two adjacent guide plates (5) being enclosed to form a maze-like channel (6).
2. The air inlet dust and water proof structure according to claim 1, characterized in that: The outer convex surface of the blocking portion (51) faces the inlet and outlet of the labyrinth-shaped channel (6), and the outer convex surfaces and inner concave surfaces of two adjacent guide plates (5) are respectively fixedly connected with a first baffle (511) and a second baffle (512); The first baffle (511) and the second baffle (512) respectively surround the outer convex surface of the guide plate (5) and the inner concave surface of the guide plate (5) to form a blocking space (513), and the opening of the blocking space (513) faces the entrance of the labyrinth-shaped channel (6).
3. The air inlet dust and water proof structure according to claim 1 or 2, characterized in that: The two side portions of the guide plate (5) are respectively perpendicular to the opening of the installation frame (3) and the air inlet (1), and the two side portions of the guide plate (5) are respectively folded toward a side away from the blocking portion (51) to form a folded edge (52), and the folded edge (52) away from the installation frame (3) extends into the labyrinth-shaped channel (6).
4. The air inlet dust and water proof structure according to claim 1 or 3, characterized in that: The lower mounting plate (4) is obliquely mounted behind the mounting frame (3), and the bottom of the guide plate (5) is in contact with the surface of the lower mounting plate (4); The upper and lower sides of the lower mounting plate (4) are bent upward and downward respectively to form a first mounting portion (41) and a first limiting portion (42); the first mounting portion (41) is used for fixed connection with the mounting frame (3); and the first limiting portion (42) is located in front of the exit of the labyrinth-shaped passage (6).
5. The air inlet dust and water proof structure according to claim 4, characterized in that: A plurality of insertion holes (43) are provided on the inclined surface of the lower mounting plate (4), and the bottom of the guide plate (5) protrudes downward to form an insertion portion (44), and the insertion portion (44) is plugged into and matched with the insertion holes (43).
6. The dust and water proof structure of the air inlet according to claim 5, characterized in that: A notch (45) is provided at the bottom of the inserting portion (44), and the notch (45) extends upward along the inserting portion (44).
7. The air inlet dust and water proof structure according to any one of claims 3 to 5, characterized in that: An upper mounting plate (7) is horizontally mounted at the rear of the mounting frame (3), and the upper mounting plate (7) is located on the top of the guide plate (5); The front and rear sides of the upper mounting plate (7) are bent upward and downward respectively to form a second mounting portion (71) and a second limiting portion (72); the second mounting portion (71) is used for fixed connection with the mounting frame (3); and the second limiting portion (72) is located in front of the exit of the labyrinth-shaped passage (6).
8. The dust and water proof structure of the air inlet according to claim 3, characterized in that: The top of the folded edge (52) is provided with a fixing portion (53), and the fixing portion (53) is integrally formed with the folded edge (52) and is formed by horizontal bending.