Rain protection shutter device for external walls

Abstract

The utility model relates to a louver technology field provides a rain -proof louver device for outer wall, include: frame, multiple rotating shafts and multiple rotating louvers, frame is used for embedding in the wall body, multiple rotating shafts are along the height direction parallel arrangement of frame, and rotating shaft can rotate relative to frame, rotating louver is connected with rotating shaft, and rotating louver can drive rotating shaft to rotate when rotating, rotating louver has the first position and the second position of switchable, when indoor fan is in the open state, rotating louver rotates under the action of wind force, and rotating louver is in the first position, and the adjacent two rotating louvers form the ventilation air duct, when indoor fan is in the closed state, rotating louver is drooping under the action of dead weight, and rotating louver is in the second position, and ventilation air duct is closed. The rain -proof louver device for outer wall above, has realized the exhaust, the smoke exhaust also can prevent rain, has given consideration to ventilation and rain -proof, and installation is convenient, does not need power supply, has reduced the energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of louver technology, and in particular to a rainproof louver device for exterior walls. Background Technology

[0002] In the fields of building exterior waterproofing and HVAC ventilation (smoke extraction), rainproof louvers are widely used in the following two typical scenarios: (1) Used for natural ventilation of the room or as a means of natural smoke exhaust. Openings are made in the exterior wall and rainproof louvers are installed to allow for the circulation of indoor air and the natural exhaust of smoke, thereby achieving the purpose of ventilation or smoke exhaust.

[0003] (2) For rooms requiring mechanical ventilation or forced smoke extraction. An opening is made in the exterior wall and fitted with rainproof louvers. Combined with a fan or auxiliary duct system, it can achieve efficient exhaust of indoor air or smoke to improve indoor air quality or meet smoke extraction requirements.

[0004] Whether using natural ventilation (smoke extraction) or mechanical ventilation (smoke extraction), appropriate ventilation (smoke extraction) openings are typically required at the top of the building or the upper part of the exterior walls. Currently, these openings are often fitted with rainproof louvers to balance ventilation (smoke extraction) and rain protection. However, in actual use, especially during heavy rain or downpours accompanied by strong winds, these louvers often fail to effectively prevent rainwater from seeping into the interior, leading to slippery floors, wet items, and other problems that negatively impact the normal living environment.

[0005] Most common exterior wall ventilation (smoke extraction) louvers on the market are fixed structures. In light winds and rain, only a small amount of rainwater carried by the wind seeps into the room through the gaps in the louvers; however, under the combined effects of strong winds and heavy rain, the amount of rainwater intrusion increases significantly, easily causing items below the louvers to become damp. The reason for this is that, to ensure effective ventilation and smoke extraction, louvers need to maintain a certain gap for airflow, and the existence of these gaps objectively provides a path for rainwater infiltration. Therefore, existing fixed louvers still have significant shortcomings in balancing effective ventilation and efficient rain protection, and have not yet properly resolved the contradiction between allowing ventilation gaps and ensuring airtightness against wind and rain. Utility Model Content

[0006] This invention provides a rainproof louver device for exterior walls, which solves the problem that existing louvers cannot simultaneously provide ventilation and rain protection.

[0007] This utility model provides a rainproof louver device for exterior walls, comprising: a frame for being embedded in the wall; multiple rotating shafts arranged parallel to the height direction of the frame, the rotating shafts being rotatable relative to the frame; multiple rotating louvers connected to the rotating shafts, the rotating louvers driving the rotating shafts to rotate when they rotate; each rotating louver having a switchable first position and a second position; when the indoor fan is on, the rotating louvers rotate under the action of wind force, the rotating louvers are in the first position, and a ventilation duct is formed between two adjacent rotating louvers; when the indoor fan is off, the rotating louvers droop under their own weight, the rotating louvers are in the second position, and the ventilation duct is closed.

[0008] According to the present invention, a rainproof louver device for an exterior wall is provided, wherein at least one end of each rotating louver is a free end; when the rotating louver is in the first position, the free end forms a ventilation duct with the adjacent rotating louver; when the rotating louver is in the second position, the free end overlaps with the adjacent rotating louver.

[0009] According to the present invention, a rainproof louver device for an exterior wall is provided, wherein the first end of the rotating louver is connected to the rotating shaft, and the second end of the rotating louver is a free end.

[0010] According to the present invention, a rainproof louver device for an exterior wall is provided, wherein both ends of the rotating louver are free ends, and the connection point between the rotating louver and the rotating shaft is located above the center of gravity of the rotating louver.

[0011] According to the present invention, a rainproof louver device for an exterior wall is provided, which further includes a pair of fixed louvers, the pair of fixed louvers being symmetrically arranged on the frame and located on both sides of the plurality of rotating louvers; when the rotating louvers are in the second position, the fixed louvers overlap with the adjacent rotating louvers.

[0012] According to the present invention, a rainproof louver device for an exterior wall is provided, wherein the rotating louver includes: a first blade; a second blade connected to the first blade, and forming a first bend between the two, the length of the second blade being greater than the length of the first blade, the second blade being connected to the rotating shaft, and the connection point being located above the center of gravity of the second blade; wherein, when the rotating louver is in the second position, the first blade overlaps with the second blade of the adjacent fixed louver or rotating louver, and the second blade overlaps with the first blade of the adjacent fixed louver or rotating louver.

[0013] According to the present invention, a rainproof louver device for an exterior wall is provided, wherein the second blade includes: a first blade portion, the first blade portion being connected to the rotating shaft near its end; a pair of second blade portions, symmetrically arranged at both ends of the first blade portion, each of the second blade portions being connected to the first blade portion, and the two forming the first bending portion, wherein the length of the second blade portion is less than the length of the first blade portion.

[0014] According to the present invention, a rainproof louver device for an exterior wall is provided, wherein the fixed louver includes: a fixing part connected to the frame; a blade part, wherein a first end of the blade part is connected to the fixing part, a second end of the blade part can overlap with the rotating louver, and the blade part has a second bending part, wherein the bending direction of the second bending part is opposite to that of the first bending part.

[0015] According to the present invention, a rainproof louver device for an exterior wall is provided, which further includes a fireproof cloth, wherein the fireproof part is disposed on the surface of the first blade and the surface of the end of the second blade that is not connected to the first blade.

[0016] According to the present invention, a rainproof louver device for an exterior wall is provided, which further includes a support plate, the support plate being disposed within the frame, and the rotating shaft being provided on opposite sides of the support plate.

[0017] The rainproof louver device for exterior walls provided by this utility model, by setting a rotating shaft and rotating louvers, allows the louvers to rotate under the action of wind force during indoor ventilation, forming a ventilation duct. In rainy weather, the positive pressure of indoor air can prevent rainwater from entering through the ventilation duct. When ventilation is not needed, the rotating louvers droop under their own weight, closing the ventilation duct. This achieves both ventilation and rain protection, and is easy to install, requires no power supply, and reduces energy consumption. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the rainproof louver device for exterior walls provided by this utility model when it is in the open state.

[0020] Figure 2 This is a top view of the rainproof louver device for exterior walls provided by this utility model when it is in the open state.

[0021] Figure 3 This is a cross-sectional view of the rainproof louver device for exterior walls provided by this utility model when it is in the open state.

[0022] Figure 4 yes Figure 3 The enlarged view of point A shown in the image.

[0023] Figure 5 This is a schematic diagram of the structure of the rainproof louver device for exterior walls provided by this utility model when it is in the closed state.

[0024] Figure 6 This is a cross-sectional view of the rainproof louver device for exterior walls provided by this utility model in the closed state.

[0025] Figure 7 yes Figure 6 The enlarged view of point B shown in the image.

[0026] Figure 8 yes Figure 6 The enlarged view of point C is shown in the image.

[0027] Figure label: 10. Rotating louver; 11. First blade; 12. Second blade; 121. First blade section; 122. Second blade section; 20. Rotating shaft; 30. Fixed louver; 31. Fixed part; 32. Blade section; 40. Fireproof cloth; 100. Frame; 101. Support plate. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] The following is combined with Figures 1-8 This invention describes a rainproof louver device for exterior walls.

[0030] like Figure 1 , Figure 3 , Figure 5 and Figure 6As shown, in an embodiment of this utility model, the rainproof louver device for an exterior wall includes: a frame 100, multiple rotating louvers 10, and multiple rotating shafts 20. The frame 100 is used to be installed in an opening in the wall, and the multiple rotating shafts 20 are arranged parallel to each other along the height direction of the frame 100, and the rotating shafts 20 can rotate relative to the frame 100. In this embodiment, the frame 100 can be a rectangular frame, and rotating shafts 20 are provided on one side or opposite sides of the rectangular frame. The rotating shafts 20 are connected to the rotating louvers 10, and the rotating louvers 10 can drive the rotating shafts 20 to rotate when they rotate.

[0031] The rotating louver 10 has a switchable first position and a second position. When the rainproof louver device is open, the rotating louver is in the first position; when the rainproof louver device is closed, the rotating louver is in the second position. Specifically, to achieve indoor ventilation and smoke extraction, a fan is usually installed indoors. When the fan is on, the rotating louver 10 rotates under the action of the wind, forming a ventilation duct between adjacent rotating louvers 10. At this time, the rotating louver 10 is in the first position. When ventilation and smoke extraction are not needed, the fan is off. At this time, the rotating louver 10 droops under its own weight, and adjacent rotating louvers 10 overlap, closing the ventilation duct. At this time, the rotating louver 10 is in the second position. In this embodiment, when ventilation is needed, the rainproof louver device can automatically open under the action of the fan, and when ventilation is not needed, the rainproof louver device can automatically close under its own weight to prevent rainwater from entering the room. During ventilation, if it rains, the positive pressure of the indoor air during exhaust can also prevent rainwater from entering the room.

[0032] The rainproof louver device for exterior walls provided in this embodiment of the utility model, by setting a rotating shaft and rotating louvers, allows the louvers to rotate under the action of wind force during indoor ventilation, forming a ventilation duct. In rainy weather, the positive pressure of indoor air can prevent rainwater from entering through the ventilation duct. When ventilation is not needed, the rotating louvers droop under their own weight, closing the ventilation duct. This achieves both ventilation and smoke exhaust, as well as rain protection, taking into account both ventilation and rain protection. Moreover, it is easy to install, requires no power supply, and reduces energy consumption.

[0033] In an embodiment of this invention, at least one end of each rotating louver 10 is a free end. When the rotating louver 10 is in a first position, a ventilation duct is formed between the free end and the adjacent rotating louver 10. When the rotating louver 10 is in a second position, the free end overlaps with the adjacent rotating louver 10. In this embodiment, when the free end overlaps with the adjacent rotating louver 10, under the action of outdoor wind, the rotating louvers 10 will overlap more closely, giving the rotating louvers 10 a backflow prevention function, preventing rainwater from entering the room during windy and rainy weather.

[0034] Optionally, when one end of the rotating louver 10 is a free end, the other end is connected to the rotating shaft 20. In this case, the center of gravity of the rotating louver 10 is located below the connection point. Without a fan, the rotating louver 10 can droop under its own weight and overlap with adjacent rotating louvers 10. Optionally, in this embodiment, the rotating louver 10 can be a straight strip. When the rotating louver 10 is in the second position, the free end extends below the rotating shaft 20 of the adjacent rotating louver 10 and overlaps with it.

[0035] Optionally, when both ends of the rotating louver 10 are free ends, the connection point between the rotating louver 10 and the rotating shaft 20 is located above the center of gravity of the rotating louver 10, so that the rotating louver 10 can droop under its own weight when there is no fan. In this embodiment, when the rotating louver 10 adjacent to the frame 100 is in the second position, it can overlap with the edge of the frame 100 to avoid gaps that allow rainwater to enter the room.

[0036] like Figure 3 As shown, in an embodiment of this utility model, the rainproof louver device for an exterior wall further includes a pair of fixed louvers 30. The pair of fixed louvers 30 are symmetrically arranged on the frame 100. In this embodiment, the rotating shaft 20 is arranged on two sides of the frame 100, and the pair of fixed louvers 30 are respectively arranged on the top and bottom edges of the frame 100. In this embodiment, the fixed louvers 30 do not rotate. When the rotating louver 10 is in the second position, the fixed louver 30 overlaps with the adjacent rotating louver 10.

[0037] like Figure 4 and Figure 7 As shown, in an embodiment of this utility model, the rotating louver 10 includes a first blade 11 and a second blade 12. The second blade 12 is connected to the first blade 11, and a first bend is formed between them. The length of the second blade 12 is greater than the length of the first blade 11. The second blade 12 is connected to the rotating shaft 20, and the connection point is located above the center of gravity of the second blade 12, so that the second blade 12 can rotate downward under its own weight. In this embodiment, when the rotating louver 10 is in the second position, the first blade 11 overlaps with the second blade 12 of the adjacent fixed louver 30 or rotating louver 10, and the second blade 12 overlaps with the first blade 11 of the adjacent fixed louver 30 or rotating louver 10. When the rotating louver 10 is in the first position, the first blade 11 separates from the second blade 12 of the adjacent fixed louver 30 or rotating louver 10, and the second blade 12 also separates from the first blade 11 of the adjacent fixed louver 30 or rotating louver 10.

[0038] Further, in an embodiment of this utility model, the second blade 12 includes a first blade portion 121 and a pair of second blade portions 122. The first blade portion 121 is connected to the rotation shaft 20 near its end, and the pair of second blade portions 122 are symmetrically arranged at both ends of the first blade portion 121. Each second blade portion 122 is connected to the first blade 11, and a first bend is formed between them. In this embodiment, the length of the second blade portion 122 is less than the length of the first blade portion 121.

[0039] like Figure 8 As shown, in an embodiment of this utility model, the fixed louver 30 includes a fixing part 31 and a blade part 32. The fixing part 31 is connected to the frame 100, and the first end of the blade part 32 is connected to the fixing part 31. When the rotating louver 10 is in the second position, the second end of the blade part 32 overlaps with the rotating louver 10. In this embodiment, the blade part 32 has a second bending part, and the bending direction of the second bending part is opposite to the bending direction of the first bending part.

[0040] like Figure 4 As shown in the embodiment of this utility model, the rainproof louver device for exterior walls also includes a fireproof cloth 40, which is disposed on the surface of the first blade 11 and the surface of the second blade 12 not connected to the first blade 11. By providing the fireproof cloth 40 on the first blade 11 and the second blade 12, noise can be avoided during overlap when the louver 10 is rotated to the second position, while also providing fire protection.

[0041] like Figure 1 and Figure 2 As shown, in an embodiment of this utility model, the rainproof louver device for exterior walls further includes a support plate 101. When the lateral distance of the frame 100 is large, at least one support plate 101 can be provided inside the frame 100. The two ends of the support plate 101 are respectively connected to the top edge and the bottom edge of the frame 100. Rotating shafts 20 are provided on opposite sides of the support plate 101, and the rotating shafts 20 can rotate relative to the support plate 101. In this embodiment, both sides of each rotating louver 10 are connected to the rotating shaft 20.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rainproof louver device for exterior walls, characterized in that, include: A frame, used for embedding within a wall; Multiple rotating shafts are arranged parallel to each other along the height direction of the frame, and the rotating shafts can rotate relative to the frame; Multiple rotating louvers are provided, and the rotating louvers are connected to the rotating shaft. When the rotating louvers rotate, they can drive the rotating shaft to rotate. The rotating louver has a switchable first position and a second position. When the indoor fan is on, the rotating louver rotates under the action of wind force. The rotating louver is in the first position, and a ventilation duct is formed between two adjacent rotating louvers. When the indoor fan is in the off state, the rotating louvers droop under their own weight, the rotating louvers are in the second position, and the ventilation duct is closed.

2. The rainproof louver device for exterior walls according to claim 1, characterized in that, At least one end of each of the rotating louvers is a free end, and when the rotating louvers are in the first position, the free end forms the ventilation duct between the adjacent rotating louvers; When the rotating louver is in the second position, the free end overlaps with the adjacent rotating louver.

3. The rainproof louver device for exterior walls according to claim 2, characterized in that, The first end of the rotating louver is connected to the rotating shaft, and the second end of the rotating louver is a free end.

4. The rainproof louver device for exterior walls according to claim 2, characterized in that, Both ends of the rotating louver are free ends, and the connection point between the rotating louver and the rotating shaft is located above the center of gravity of the rotating louver.

5. The rainproof louver device for exterior walls according to claim 4, characterized in that, It also includes a pair of fixed louvers, which are symmetrically arranged on the frame and located on both sides of the plurality of rotating louvers; When the rotating louver is in the second position, the fixed louver overlaps with the adjacent rotating louver.

6. The rainproof louver device for exterior walls according to claim 5, characterized in that, The rotating louvers include: First blade; The second blade is connected to the first blade, and a first bend is formed between them. The length of the second blade is greater than the length of the first blade. The second blade is connected to the rotation shaft, and the connection point is located above the center of gravity of the second blade. When the rotating louver is in the second position, the first blade overlaps with the second blade of the adjacent fixed louver or rotating louver, and the second blade overlaps with the first blade of the adjacent fixed louver or rotating louver.

7. The rainproof louver device for exterior walls according to claim 6, characterized in that, The second blade includes: The first blade portion is connected to the rotating shaft near its end. A pair of second blade portions are symmetrically disposed at both ends of the first blade portion. Each second blade portion is connected to the first blade, and the two form the first bend portion. The length of the second blade portion is less than the length of the first blade portion.

8. The rainproof louver device for exterior walls according to claim 6, characterized in that, The fixed louvers include: The fixing part is connected to the frame; The blade portion has a first end connected to the fixing portion and a second end capable of overlapping with the rotating louver. The blade portion has a second bending portion, the bending direction of which is opposite to that of the first bending portion.

9. The rainproof louver device for exterior walls according to claim 6, characterized in that, It also includes fireproof cloth, which is disposed on the surface of the first blade and the surface of the end of the second blade that is not connected to the first blade.

10. The rainproof louver device for exterior walls according to claim 1, characterized in that, It also includes a support plate, which is disposed within the frame, and the rotation shaft is provided on opposite sides of the support plate.

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