A herringbone rain and wind valve

Abstract

The utility model discloses a herringbone rainproof air valve, including rectangle frame, the support spare of four corner positions of being arranged at rectangle frame, the first herringbone support and second herringbone support on two support spare of connecting same side respectively, multiple air valve plates are set to the upper edge of first herringbone support and second herringbone support transversely, and the rear side edge position of air valve plate is equipped with first pivot joint part respectively in two ends close to air valve plate, and the upper edge of first herringbone support and second herringbone support is equipped with multiple second pivot joint parts of one -to -one opposite and interval distribution, first pivot joint part or second pivot joint part is equipped with ball bearing, and first pivot joint part and second pivot joint part pivot joint, and the rear side edge of low -lying air valve plate is successively active buckling by the front side edge of high -lying air valve plate to multiple air valve plates, and the upper edge of first herringbone support and second herringbone support is equipped with limiting mechanism, and limiting mechanism is used for limiting the maximum angle of multiple air valve plates along the circumferential rotation of first pivot joint part and turns over and opens.

Description

Technical Field

[0001] This disclosure relates to the field of exhaust vent valve technology, and in particular to a herringbone-shaped rainproof valve. Background Technology

[0002] For structures such as buildings or vehicle bodies that require internal and external air circulation for heat dissipation or ventilation, exhaust vents are installed on the side walls of the structure. An axial flow fan is installed inside the exhaust vent, blowing air outwards. A damper is installed outside the exhaust vent. Existing damper devices typically consist of a frame with multiple louvers pivotally connected to opposite side walls on the inner side. When the axial flow fan is activated, the air pressure opens the louvers. When the fan is turned off, the louvers automatically close due to their vertical installation and the louvers rotating along the pivot axis under their own weight. Since the exhaust vents and damper are installed laterally, a rainproof flange can be installed on the upper edge or above the damper to prevent rainwater from directly hitting it. For ventilation vents installed on the top of buildings or vehicle bodies, and damper devices installed on the outside of the ventilation vents, with the ventilation vents of the damper devices facing upwards, the existing damper devices need to be optimized and improved. This is because louvers on the same horizontal plane are not conducive to the rapid discharge of rainwater. In addition, since the damper device is set upwards, the louvers connected to it may not be able to rotate and close smoothly under their own weight when the axial flow fan is turned off. Therefore, the existing damper devices need to be optimized and improved. Utility Model Content

[0003] In view of this, the present disclosure proposes a herringbone-shaped rainproof damper, which is suitable for damper devices with the exhaust port facing upward. The herringbone-shaped slope facilitates the rapid downward flow and discharge of rainwater, and optimizes the damper plate to flip and close more smoothly under its own weight when the axial flow fan is turned off.

[0004] According to one aspect of this disclosure, a herringbone-shaped rainproof damper is provided, comprising a rectangular frame, support members at the four corners of the rectangular frame, a first herringbone bracket and a second herringbone bracket respectively connected to two support members on the same side, and a plurality of damper plates horizontally arranged on the upper edges of the first herringbone bracket and the second herringbone bracket. Each damper plate has a first pivot portion at both ends near its rear edge. The upper edges of the first herringbone bracket and the second herringbone bracket have a plurality of opposing and spaced second pivot portions. Each first or second pivot portion is equipped with a ball bearing and is pivotally connected to the second pivot portion. The plurality of damper plates are sequentially and movably pressed against the rear edge of the lower damper plate from the front edge of the higher damper plate. The first herringbone bracket and the second herringbone bracket are provided with a limiting mechanism, which limits the maximum angle at which the plurality of damper plates can rotate and open circumferentially along the first pivot portion. The maximum angle is less than 90 degrees from the horizontal plane.

[0005] Furthermore, the first pivot is a rotating shaft, and the second pivot is a plurality of through holes arranged one-to-one and spaced apart on the upper edge of the first herringbone bracket and the second herringbone bracket. Each through hole is provided with a T-shaped bushing, and a ball bearing is embedded in the T-shaped bushing. One end of the rotating shaft is fixedly connected to the air valve plate, and the other end of the rotating shaft is connected to the inner ring hole of the ball bearing.

[0006] As one embodiment, the limiting mechanism is a limiting crossbar horizontally installed on the rear side of each damper plate in the flipping direction. The two ends of the limiting crossbar are fixed to the first herringbone bracket and the second herringbone bracket, respectively. The damper plate rotates and flips open circumferentially along the first pivot part, and the rear side of the damper plate abuts against the limiting crossbar.

[0007] In another preferred embodiment, the first herringbone bracket, the second herringbone bracket, and multiple damper plates form a herringbone-shaped first and second inclined surfaces. The limiting mechanism consists of a first limiting crossbar and a second limiting crossbar respectively horizontally arranged on the rear side of any damper plate on the first and second inclined surfaces. A connecting support is provided on the inner bottom of each damper plate corresponding to the first and second inclined surfaces, with the first pivot portion as the boundary, near the high position of the first and second inclined surfaces. A linkage rod is movably hinged to the connecting support of the damper plate corresponding to the first inclined surface, and a linkage rod is movably hinged to the connecting support of the damper plate corresponding to the second inclined surface.

[0008] Furthermore, the front and rear sides of the damper plate along its length are respectively set as downward folded edges and upward folded edges. A water-blocking groove is provided at the lowest position of the first herringbone bracket and the second herringbone bracket. The front side of the damper plate near the water-blocking groove is pressed against the rear side of the water-blocking groove. A drainage hole is provided at the bottom of the water-blocking groove.

[0009] Furthermore, the damper plate has at least one raised edge that is parallel to the front and rear sides of the damper plate along its length direction, and the first pivot part has two concave ends of the raised edge of the damper plate.

[0010] Preferably, the cross-section of the protruding edge is semi-circular or V-shaped.

[0011] Furthermore, a top crossbeam is connected to the highest point of the first and second A-frame brackets, and baffles are connected to the left and right sides of the top crossbeam along its length. The rear side of the damper plate at the highest point of the first and second A-frame brackets moves against the bottom of the baffles.

[0012] Preferably, the rectangular frame is formed by four L-shaped profiles, forming a horizontal outer edge for installation. The inner side of the outer edge forms a rectangular frame sidewall. The outer perimeter of the rectangular frame sidewall is provided with a panel connected to the first herringbone bracket and the second herringbone bracket. The lower edge of the panel is provided with a first 90-degree inward bend, and the front side of the first 90-degree bend is provided with a second 90-degree downward bend. The second 90-degree bend is connected to the rectangular frame sidewall. The upper edge of the rectangular frame sidewall is higher than the first 90-degree bend, forming a drainage ditch around the perimeter. The first 90-degree bend is the bottom of the drainage ditch around the perimeter, and a drainage hole is provided on the first 90-degree bend.

[0013] The beneficial effects of this utility model are as follows: Compared with the prior art, this solution designs multiple air valve plates on the upper edge of the first and second herringbone brackets to form the air valve surfaces of the first and second inclined surfaces in the herringbone shape. Compared with the traditional air valve plates that are set horizontally, this solution is designed in the herringbone shape, which is more conducive to rapid drainage. In addition, the two ends of the damper plate are pivotally connected to the first and second herringbone brackets via a first pivot and a second pivot. Ball bearings are installed at either the first or second pivot. This reduces friction when the damper plate rotates circumferentially along the central axis of the pivot, whether the damper plate is opened by the pressure of the air blown by the axial fan or when the axial fan is off. The damper plate tilts forward at its open position (i.e., the maximum angle at which the damper plate rotates and flips circumferentially along the first pivot via the limiting mechanism is less than 90 degrees). The damper plate rotates forward along the central axis of the first pivot under its own weight. The ball bearings make the opening and closing process of the damper plate smoother, solving the problem of existing damper plate and frame connections using a shaft and hole design, which results in significant friction between the shaft and hole during rotation, affecting service life, and causing uneven rotation and failure to automatically close under gravity. Attached Figure Description

[0014] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this disclosure together with the specification and serve to explain the principles of this disclosure.

[0015] Figure 1 This is a top-view perspective view of the overall structure disclosed in this utility model.

[0016] Figure 2 This is a schematic diagram of the rectangular frame and the assembly structure of the first herringbone bracket and the second herringbone bracket disclosed in this utility model.

[0017] Figure 3 This is a schematic diagram of the damper plate structure disclosed in this utility model.

[0018] Figure 4 This is a bottom perspective view of the overall structure disclosed in this utility model.

[0019] Figure 5 This is a schematic diagram of the connecting support and linkage rod structure disclosed in this utility model.

[0020] Figure 6 This is a cross-sectional view of the overall structure of the damper plate in the open state disclosed in this utility model.

[0021] Figure 7 This is a partially enlarged schematic diagram of the air valve plate in the open state disclosed in this utility model.

[0022] Figure 8 This is a cross-sectional view of the overall structure of the damper plate in the closed state disclosed in this utility model.

[0023] Figure 9 This is a partially enlarged schematic diagram of the closed state of the damper plate disclosed in this utility model.

[0024] The attached figures are labeled as follows: 1. Rectangular frame; 2. Support component; 3. First herringbone bracket; 4. Second herringbone bracket; 301. Through hole; 31. T-shaped bushing; 5. Air valve plate; 51. Rotating shaft; 52. Ball bearing; 501. Upward folded edge; 502. Downward folded edge; 503. Protruding edge; 6. First limiting crossbar; 6'. Second limiting crossbar; 7. Connecting support; 8. Linkage rod; 9. Water-blocking groove; 10. Top crossbeam; 11. Stop bar; 12. Enclosure panel; 121. First 90-degree folded edge; 122. Second 90-degree folded edge; 13. Surrounding drainage ditch. Detailed Implementation

[0025] The technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this disclosure.

[0026] Please refer to Figures 1 to 9 This is a specific embodiment of a herringbone-shaped rainproof damper disclosed in the technical solution. It includes a rectangular frame 1, support members 2 located at the four corners of the rectangular frame 1, a first herringbone bracket 3 and a second herringbone bracket 4 respectively connected to two support members 2 on the same side, and multiple damper plates 5 horizontally arranged along the upper edges of the first herringbone bracket 3 and the second herringbone bracket 4. Each damper plate 5 has a first pivot joint at both ends near its rear side. Multiple opposing damper plates are located along the upper edges of the first herringbone bracket 3 and the second herringbone bracket 4. The second pivot joint is spaced apart, and the first or second pivot joint is provided with a ball bearing 52. The first pivot joint and the second pivot joint are pivotally connected. The multiple air valve plates 5 are sequentially and movably pressed against the rear side of the lower air valve plate 5 from the front side of the higher air valve plate 5. The first herringbone bracket 3 and the second herringbone bracket 4 are provided with a limiting mechanism. The limiting mechanism is used to limit the maximum angle of rotation and flipping of the multiple air valve plates 5 along the circumference of the first pivot joint. The maximum angle is less than 90 degrees with respect to the horizontal plane, preferably 80 to 85 degrees. Specifically, the support member 2 is made of angle iron. The first pivot part is a rotating shaft 51, and the second pivot part is a plurality of through holes 301 arranged one-to-one and spaced apart on the upper edge of the first herringbone bracket 3 and the second herringbone bracket 4. Each through hole 301 is provided with a T-shaped bushing 31, and a ball bearing 52 is embedded in the T-shaped bushing 31. One end of the rotating shaft 51 is fixedly connected to the air valve plate 5. Preferably, the rotating shaft 51 and the air valve plate 5 are connected by spot welding. The other end of the rotating shaft 51 is fastened to the inner ring hole of the ball bearing 52. The T-shaped bushing 31 is fastened to the through hole 301.

[0027] In one embodiment, the limiting mechanism is a limiting crossbar horizontally installed on the rear side of each damper plate 5 in the flipping direction. The two ends of the limiting crossbar are fixed to the first herringbone bracket 3 and the second herringbone bracket 4, respectively. The damper plate 5 rotates and flips open circumferentially along the first pivot part, and the rear side of the damper plate 5 abuts against the limiting crossbar. This embodiment requires the installation of multiple limiting crossbars, which will increase the weight of the overall damper device.

[0028] Please refer to Figure 1 , Figures 4 to 9In this embodiment, preferably, the first herringbone bracket 3, the second herringbone bracket 4, and the multiple damper plates 5 form a herringbone-shaped first and second inclined surfaces. The limiting mechanism consists of a first limiting crossbar 6 and a second limiting crossbar 6' respectively horizontally arranged on the rear side of any damper plate 5 on the first and second inclined surfaces. A connecting support 7 is provided on the inner bottom of each damper plate 5 corresponding to the first and second inclined surfaces, with the first pivot portion as the boundary, near the higher position of the first and second inclined surfaces. A linkage rod 8 is movably hinged to the connecting support 7 of the damper plate 5 corresponding to the first inclined surface, and a linkage rod 8 is movably hinged to the connecting support 7 of the damper plate 5 corresponding to the second inclined surface. This solution only requires two limiting crossbars, but requires the linkage rod 8 to be provided in conjunction. The linkage rod 8 is movably hinged to the connecting support 7, and the upper end of the connecting support 7 is fixedly connected to the corresponding damper plate 5. In use, the axial flow fan installed at the bottom inside the air valve is started. The air from the axial flow fan blows towards the bottom inside of the air valve plate 5. The air pressure causes the air valve plate 5 to rotate and open. The rear side of one air valve plate 5 abuts against a limiting crossbar. That is, the maximum angle of rotation of the hinge between the connecting support 7 and the linkage rod 8 connected to the air valve plate 5 is limited by the angle at which the air valve plate 5 stops rotating. Since the angle of rotation of the hinge between one connecting support 7 and the linkage rod 8 is limited, other connecting supports 7 connected to the same linkage rod 8 can only rotate to this angle. This achieves the same angle of rotation for opening or closing of the connected air valve plates 5 by the linkage rod 8, and ensures synchronization.

[0029] Please refer to Figure 2 , Figure 4 , Figure 6 In this embodiment, the front and rear sides of the air valve plate 5 along the length direction are respectively set as downward folded edge 502 and upward folded edge 501. The lowest position of the first herringbone bracket 3 and the second herringbone bracket 4 is provided with a water-blocking groove 9. The front side of the air valve plate 5 near the water-blocking groove 9 is pressed against the rear side of the water-blocking groove 9. The bottom of the water-blocking groove 9 is provided with a drainage hole.

[0030] Please refer to Figure 1 , Figure 3 and Figure 8In this embodiment, the damper plate 5 has at least one convex and concave protrusion 503 parallel to the front and rear sides of the damper plate 5 along its length. The first pivot portion has concave ends of one of the protrusions 503 of the damper plate 5. Preferably, at least one protrusion 503 is provided on the surface of the damper plate 5 near the front side. Preferably, the cross-section of the protrusion 503 is semi-circular or V-shaped. With the semi-circular or V-shaped protrusion 503 along the length of the damper plate 5, when rainwater drips onto the damper plate 5, a portion of the rainwater will be guided to flow along both sides of the protrusion 503 and out at both ends of the damper plate 5, while a portion will flow down over the protrusion 503 to the bottom water-blocking groove 9. This design allows rainwater to accumulate at the raised edge 503 on the front side of the damper plate 5, increasing the downward pressure on the front side of the damper plate 5 when it is closed, thus better keeping the damper plate 5 in a closed state.

[0031] Please refer to Figure 1 , Figure 2 , Figure 6 and Figure 8 In this embodiment, a top crossbeam 10 is connected to the highest point of the first A-frame bracket 3 and the second A-frame bracket 4. A stop bar 11 is connected to the left and right sides of the top crossbeam 10 along its length. The rear side of the damper plate 5 at the highest point of the first A-frame bracket 3 and the second A-frame bracket 4 moves against the bottom of the stop bar 11. The top crossbeam 10 securely connects the first A-frame bracket 3 and the second A-frame bracket 4. The stop bar 11 limits the damper plate 5 at the highest point of the first A-frame bracket 3 and the second A-frame bracket 4 to a closed state, with its rear side abutting the bottom of the stop bar 11, thus providing a limiting function.

[0032] Please refer to Figure 2 , Figure 4 and Figure 6 Preferably, the rectangular frame 1 is formed by four L-shaped profiles, forming a horizontal outer edge for installation. The inner side of the outer edge for installation forms the sidewall of the rectangular frame 1. The outer perimeter of the sidewall of the rectangular frame 1 is provided with a surrounding plate 12 connected to the first herringbone bracket 3 and the second herringbone bracket 4. The lower edge of the surrounding plate 12 is provided with a first 90-degree folded edge 121 that bends inward. The front side of the first 90-degree folded edge 121 is provided with a second 90-degree folded edge 122 that bends downward. The second 90-degree folded edge 122 is connected to the sidewall of the rectangular frame 1. The upper edge of the sidewall of the rectangular frame 1 is higher than the first 90-degree folded edge 121, forming a drainage ditch 13 around the perimeter. The first 90-degree folded edge 121 is the bottom of the drainage ditch 13 around the perimeter, and a drainage hole is provided on the first 90-degree folded edge 121.

[0033] This technical solution designs multiple damper plates 5 along the upper edges of the first herringbone bracket 3 and the second herringbone bracket 4, forming a damper surface on the first and second inclined surfaces of the herringbone shape. This design is more conducive to rapid drainage compared to horizontally arranged damper plates 5. Furthermore, the two ends of the damper plate 5 are pivotally connected to the first herringbone bracket 3 and the second herringbone bracket 4 via a first pivot and a second pivot. A ball bearing 52 is installed at either the first or second pivot. This reduces friction during circumferential rotation along the central axis of the pivot, resulting in a smoother opening and closing of the damper plate 5. This solves the problem of existing damper plate 5 connections to the frame using a rotating shaft 51 and a shaft hole design, which results in significant friction between the rotating shaft 51 and the shaft hole during rotation, affecting service life, and causing uneven rotation and failure to automatically close under gravity.

[0034] The parts not described in detail in this technical solution specification are obvious to those skilled in the art and can be supplemented and improved based on existing technical knowledge. At the same time, those skilled in the art should understand that the above embodiments are merely preferred embodiments of this utility model. For those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A herringbone-shaped rainproof damper, characterized in that, The device includes a rectangular frame, support members at the four corners of the rectangular frame, a first herringbone bracket and a second herringbone bracket connected to the two support members on the same side, and multiple damper plates arranged horizontally on the upper edges of the first herringbone bracket and the second herringbone bracket. Each damper plate has a first pivot joint near its rear edge. The upper edges of the first herringbone bracket and the second herringbone bracket have multiple opposing and spaced second pivot joints. Each first or second pivot joint is equipped with a ball bearing and is pivotally connected to the second pivot joint. The multiple damper plates are sequentially pressed against the rear edge of the lower damper plate from the front edge of the higher damper plate. The first herringbone bracket and the second herringbone bracket are equipped with a limiting mechanism to limit the maximum angle at which the multiple damper plates can rotate and open circumferentially along the first pivot joint. The maximum angle is less than 90 degrees from the horizontal plane.

2. The herringbone-shaped rainproof damper according to claim 1, characterized in that, The first pivot is a rotating shaft, and the second pivot is a plurality of through holes arranged one-to-one and spaced apart on the upper edge of the first herringbone bracket and the second herringbone bracket. Each through hole is provided with a T-shaped bushing, and a ball bearing is embedded in the T-shaped bushing. One end of the rotating shaft is fixedly connected to the air valve plate, and the other end of the rotating shaft is connected to the inner ring hole of the ball bearing.

3. The herringbone-shaped rainproof damper according to claim 1, characterized in that, The limiting mechanism is a limiting crossbar horizontally installed on the rear side of each air valve plate in the flipping direction. The two ends of the limiting crossbar are fixed to the first herringbone bracket and the second herringbone bracket, respectively. The air valve plate rotates and flips open circumferentially along the first pivot part, and the rear side of the air valve plate abuts against the limiting crossbar.

4. The herringbone-shaped rainproof damper according to claim 1, characterized in that, The first herringbone bracket, the second herringbone bracket, and multiple damper plates form a herringbone-shaped first and second inclined surfaces. The limiting mechanism consists of a first limiting crossbar and a second limiting crossbar respectively horizontally arranged on the rear side of any damper plate on the first and second inclined surfaces. A connecting support is provided on the inner bottom of each damper plate corresponding to the first and second inclined surfaces, with the first pivot portion as the boundary, near the high position of the first and second inclined surfaces. A linkage rod is movably hinged to the connecting support of the damper plate corresponding to the first inclined surface, and a linkage rod is movably hinged to the connecting support of the damper plate corresponding to the second inclined surface.

5. The herringbone-shaped rainproof damper according to claim 1, characterized in that, The front and rear sides of the damper plate along its length are respectively set as downward folded edges and upward folded edges. A water-blocking groove is provided at the lowest position of the first herringbone bracket and the second herringbone bracket. The front side of the damper plate near the water-blocking groove is pressed against the rear side of the water-blocking groove. A drainage hole is provided at the bottom of the water-blocking groove.

6. The herringbone-shaped rainproof damper according to claim 1, characterized in that, The damper plate has at least one raised edge that is parallel to the front and rear sides of the damper plate along its length direction. The first pivot part has two recessed ends of the raised edge of the damper plate.

7. The herringbone-shaped rainproof damper according to claim 6, characterized in that, The cross-section of the protruding edge is semi-circular or V-shaped.

8. The herringbone-shaped rainproof damper according to claim 1, characterized in that, The first and second A-frame brackets are connected to a top crossbeam at their highest points. The left and right sides of the top crossbeam are connected to baffles respectively. The rear side of the damper plate at the highest point of the first and second A-frame brackets moves against the bottom of the baffles.

9. The herringbone-shaped rainproof damper according to claim 1, characterized in that, The rectangular frame is formed by four L-shaped profiles, creating a horizontal outer edge for installation. The inner side of the outer edge forms a rectangular frame sidewall. The outer perimeter of the rectangular frame sidewall is provided with a panel that connects to the first herringbone bracket and the second herringbone bracket. The lower edge of the panel has a first 90-degree inward bend, and the front side of the first 90-degree bend has a second 90-degree downward bend. The second 90-degree bend connects to the rectangular frame sidewall. The upper edge of the rectangular frame sidewall is higher than the first 90-degree bend, forming a drainage ditch around the perimeter. The first 90-degree bend is the bottom of the drainage ditch around the perimeter, and a drainage hole is provided on the first 90-degree bend.

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