A low-resistance lightweight large louvre with large windward area and capable of resisting large wind pressure

Abstract

A low-resistance lightweight large louver with large windward area and capable of resisting strong wind pressure belongs to the technical field of ventilation and air conditioning, comprising a support frame, a rotating shaft and low-resistance lightweight blades. The support frame is used for supporting and fixing the low-resistance lightweight blades and the rotating shaft. The low-resistance lightweight blades are vertically arranged blades, the width W of which satisfies 0.5m≤W≤2.6m, and the height H of which satisfies 0.8m≤H≤3m. Further, the low-resistance lightweight blades can be arc-shaped blades, the ratio F of the arc length to the chord length of which satisfies 1≤F≤1.2. The blades are composed of low-resistance lightweight modules with inner reinforcing ribs and module frames, and the wind pressure resistance of the blades is improved by the combination of the low-resistance lightweight modules and the module frames. The ratio K of the thickness D of the low-resistance lightweight modules to the width W of the blades satisfies 0.01≤K≤0.06, and the low-resistance lightweight modules with the ratio K of the thickness D to the width W are used to reduce the wind resistance of the blades when guiding wind and the additional ventilation resistance of the thickness. Further, the low-resistance lightweight modules can be further provided with sealed ends to improve the sealing performance of the blades when blocking wind.

Description

Technical Field

[0001] The present invention belongs to the technical field of ventilation and air conditioning, and in particular relates to a low-resistance, lightweight large louver with a large windward area and capable of resisting high wind pressure. Background Art

[0002] Shutters are often used as ventilation devices to regulate the air flow of buildings and structures. They can play a better ventilation and regulation role when the shutters need to be partially closed to block the wind and reduce the ventilation volume. However, when the shutters need to be fully opened to guide the wind and maximize the ventilation volume, the shutters with small widths have a larger total number of shutters, which reduces the ventilation area of ​​the building's air inlet. After actual conversion, the equivalent air inlet height is reduced by more than 6%, which directly leads to a decrease in the actual ventilation flow when the shutters are fully opened.

[0003] When using large louvers with a large windward area arranged vertically, the total number of large louvers corresponding to a certain ventilation area is greatly reduced. Coupled with the reduction in the thickness of the large louvers, the blocking effect of the louvers on the ventilation area of ​​the air inlet is effectively reduced, so that the reduction in the equivalent air inlet height is controlled below 3%, thereby correspondingly increasing the actual ventilation volume; however, when the windward area of ​​the blades is further increased to improve the ventilation capacity, its wind pressure resistance performance faces challenges: thinner large louvers are prone to deformation under high wind pressure, and simply increasing the thickness of the large louver blades can enhance rigidity, but it will increase weight and wind resistance, which will affect the ventilation effect.

[0004] Therefore, a large louver structure is urgently needed that can withstand high wind pressure, provide a larger windward area, and further reduce ventilation resistance. Specifically, the composition of the large louver structure needs to be optimized, and a lightweight internal reinforcement module and modular combination method should be adopted to fully ensure wind pressure resistance while maximizing the ventilation requirements of the building. Summary of the Invention

[0005] In order to solve the technical problems raised above, the present invention proposes a low-resistance, lightweight large louver with a large windward area that can withstand high wind pressure. The ratio K of the thickness of the low-resistance, lightweight module to the width of the low-resistance, lightweight blade is set to satisfy 0.01≤K≤0.06, thereby reducing the wind-blocking area of ​​the low-resistance, lightweight blade when guiding wind, and the ventilation resistance caused by its thickness, thereby increasing the ventilation flow rate, and ensuring its wind pressure resistance through the combination of a low-resistance, lightweight module with internal reinforcement ribs and a module frame.

[0006] The specific solution of the present invention for solving the above-mentioned existing problems is: a low-resistance lightweight large louver with a large windward area and capable of resisting high wind pressure, comprising a support frame, a rotating shaft and low-resistance lightweight blades, characterized in that: the support frame comprises an upper support frame and a lower support frame for supporting and fixing the low-resistance lightweight blades and the rotating shaft; the low-resistance lightweight blades are vertically arranged blades; the horizontal span between the ends on the windward side and the leeward side of the low-resistance lightweight blade is its width W, which satisfies 0.5m≤W≤2.6m; the upper and lower ends of the low-resistance lightweight blades are fixed to the upper and lower ends of the low-resistance lightweight blades; the lower and upper ends of the low-resistance lightweight blades are fixed to the upper and lower ends of the low-resistance lightweight blades; the upper and lower ... The vertical distance between the upper end and the lower end is its height H, which satisfies 0.8m≤H≤3m; the low-resistance lightweight blade is composed of a low-resistance, light-strong module and a module frame, and the wind pressure resistance of the blade is improved by combining the low-resistance, light-strong module and the module frame; the ratio of the thickness D of the low-resistance, light-strong module to the width W of the low-resistance lightweight blade is K, which satisfies 0.01≤K≤0.06, and the windshield area of ​​the blade when guiding wind and the ventilation resistance caused by its thickness are reduced by the low-resistance, light-strong module with a ratio of thickness D to width W of the low-resistance lightweight blade being K.

[0007] The upper support frame is fixedly connected to the upper end of the low-resistance lightweight blade; the lower support frame is fixedly connected to the lower end of the low-resistance lightweight blade; the material of the support frame is one or more of galvanized steel, fiberglass, stainless steel or aluminum alloy; the rotating shaft includes an upper rotating shaft and a lower rotating shaft, the upper rotating shaft is arranged on the upper support frame, and the lower rotating shaft is arranged on the lower support frame, and the material of the rotating shaft is stainless steel or galvanized steel.

[0008] Furthermore, the low-drag lightweight blade is also configured as a vertically arranged arc blade, and the ratio of the arc length La to the chord length Lw of the low-drag lightweight blade is F, satisfying 1≤F≤1.2; the arc length La is the curve length of the arc center line in the top view of the low-drag lightweight blade; the chord length Lw is the straight-line distance between the two end points of the arc center line in the top view of the low-drag lightweight blade.

[0009] The low-resistance, light-weight and strong modules are arranged in X rows from the windward side to the leeward side along the width direction of the low-resistance, light-weight blade, and the width of the first row is W. I , where 1≤X≤10, W I is an independently configurable positive number, I=1, 2,…, X, and satisfies ∑W I = W; the low-resistance and light-strength modules are arranged in Y rows from bottom to top along the height direction of the low-resistance and lightweight blade, and the height of the J row is H J , where 1≤Y≤10, H J is an independently configurable positive number, J = 1, 2, ..., Y, and satisfies ∑H J =H.

[0010] The low-resistance, light-weight and strong module is a plate with internal reinforcing ribs; the material of the low-resistance, light-weight and strong module is one or more of polycarbonate, polyvinyl chloride, polypropylene, ABS, or one or any combination of their modified materials.

[0011] The internal reinforcement ribs are longitudinal reinforcement ribs or transverse reinforcement ribs or a combination thereof; the longitudinal reinforcement ribs are arranged inside the low-resistance, light-strength module along the height direction of the low-resistance, lightweight blade; the transverse reinforcement ribs are arranged inside the low-resistance, light-strength module along the width direction of the low-resistance, lightweight blade.

[0012] The thickness of the longitudinal reinforcement rib is Dy, 1mm≤Dy≤20mm, and the number of the longitudinal reinforcement ribs in a single low-resistance, light-strength module is M. IJ , M IJ is a positive integer that can be independently configured; the thickness of the transverse reinforcement rib is Dx, 1mm≤Dx≤20mm, and the number in a single low-resistance, light-strength module is N IJ , N IJ is an independently configurable positive integer; when M IJ ≥W I / Dy or N IJ ≥H J / Dx, the low-resistance, light-weight and strong module is a solid structure.

[0013] The module frame is a transverse support frame or a longitudinal support frame or a combination thereof; the material of the module frame is one or more of galvanized steel, fiberglass, stainless steel or aluminum alloy.

[0014] The low-drag, light-strong module is further configured as a low-drag, light-strong module with a sealed end or a low-drag, light-strong module without a sealed end; the sealed end is an integrated sealed lap end or a split sealed lap frame; the integrated sealed lap end and the low-drag, light-strong module are an integrally formed structure; the integrated sealed lap end is integrated into the windward side end of the low-drag, light-strong module of the first row of low-drag, lightweight blades and the leeward side end of the low-drag, light-strong module of the Xth row of low-drag, lightweight blades.

[0015] The split sealed lap frame and the low-drag, light-strong module are split structures; the split sealed lap frame is fixed to the windward side end of the low-drag, light-strong module of the first row of low-drag, lightweight blades and the leeward side end of the low-drag, light-strong module of the Xth row of low-drag, lightweight blades.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the ratio K of the thickness of the low-resistance, lightweight module to the width of the low-resistance, lightweight blade satisfies 0.01≤K≤0.06, reducing its windshield area when guiding wind and the ventilation resistance caused by the windshield area, thereby increasing the ventilation flow rate.

[0017] The low-resistance lightweight blades are vertically arranged arc-shaped blades, and the ratio F of the arc length La to the chord length Lw satisfies 1≤F≤1.2. The arc-shaped structure can improve its air guidance and ventilation effects.

[0018] The low-drag lightweight blade is composed of X×Y low-drag, light-strong modules and a module frame, wherein the module frame is a transverse support frame or a longitudinal support frame or a combination thereof. The modularization of the low-drag lightweight blade is utilized to differentiate the wind pressure exerted on the low-drag lightweight blade, thereby improving the wind pressure resistance of the low-drag lightweight blade. At the same time, the low-drag, light-strong module is provided with internal reinforcement ribs to further improve the wind pressure resistance of the low-drag lightweight blade.

[0019] The low-resistance, light-weight and strong module can further be a low-resistance, light-weight and strong module with a sealed end, wherein the sealed end is an integrated sealed lap end or a split sealed lap frame, which improves the sealing performance of the blade when blocking the wind. When it is a split sealed lap frame, it can further improve the wind pressure resistance of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a low-resistance, lightweight, large louver structure with a large windward area and the ability to withstand high wind pressure, which is equipped with four low-resistance, light-strength modules.

[0021] Figure 2 The diagram shows a low-resistance, lightweight, large louver structure with a large windward area and the ability to withstand high wind pressure, which only has one low-resistance, light-strength module.

[0022] Figure 3 This is a schematic diagram of a low-resistance, lightweight, large louver structure with a large frontal area and the ability to withstand high wind pressure, which is equipped with two low-resistance, light-strength modules and an arc length to chord length ratio of 1.

[0023] Figure 4 A schematic diagram of a low-resistance, lightweight, large louver structure with a large windward area and the ability to withstand high wind pressure, which is equipped with 8 low-resistance, light-strength modules.

[0024] Figure 5 This is a schematic diagram of the low-drag lightweight blade structure from a top view.

[0025] Figure 6 The diagram shows a low-resistance, lightweight, large louver structure consisting of 100 low-resistance, light-strength modules with a large windward area and the ability to withstand high wind pressure.

[0026] Figure 7 This is a schematic diagram of the low-resistance, light-weight and strong module structure.

[0027] Figure 8 Schematic diagram of the arrangement of different forms of internal reinforcement ribs in low-resistance, lightweight and strong modules.

[0028] In the figure: 1- low-drag lightweight blade; 2- upper support frame; 3- lower support frame; 4- transverse support frame; 5- longitudinal support frame; 6- integrated sealed lap joint end; 7- lower rotating shaft; 8- upper rotating shaft; 9- split sealed lap joint frame; 10- longitudinal reinforcement rib; 11- transverse reinforcement rib.

[0029] Figure 5 In: (1) - Schematic diagram of the top view structure of a low-drag lightweight blade with an integrated sealed overlapping end and only one row of low-drag lightweight modules; (2) - Schematic diagram of the top view structure of a low-drag lightweight blade without an integrated sealed overlapping end and only one row of low-drag lightweight modules; (3) - Schematic diagram of the top view structure of a low-drag lightweight blade with an integrated sealed overlapping end and two rows of low-drag lightweight modules; (4) - Schematic diagram of the top view structure of a low-drag lightweight blade without an integrated sealed overlapping end and two rows of low-drag lightweight modules.

[0030] Figure 8 Middle: (1) - Schematic diagram of the internal reinforcement arrangement with only longitudinal reinforcement; (2) - Schematic diagram of the internal reinforcement arrangement with only transverse reinforcement; (3) Schematic diagram of the internal reinforcement arrangement with a combination of longitudinal reinforcement and transverse reinforcement. DETAILED DESCRIPTION

[0031] The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological or functional changes made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0032] The structures, proportions, sizes, etc. illustrated in the drawings of the specification are only used to match the contents disclosed in the specification for understanding and reading by those familiar with this technology. They are not used to limit the conditions for implementation of the present invention and therefore have no substantial technical significance. Any structural modification, change in proportional relationship or adjustment in size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose of the present invention. At the same time, terms such as "upper", "lower", "left", and "right" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the present invention without substantially changing the technical content.

[0033] A low-resistance, lightweight large louver with a large frontal area and capable of resisting high wind pressure, comprises a support frame, a rotating shaft and a low-resistance, lightweight blade 1, characterized in that: the support frame comprises an upper support frame 2 and a lower support frame 3, which are respectively arranged at the upper end and the lower end of the low-resistance, lightweight blade 1, for supporting and fixing the low-resistance, lightweight blade 1 and the rotating shaft; the low-resistance, lightweight blade 1 is a vertically arranged blade; the width W of the low-resistance, lightweight blade 1 satisfies 0.5m≤W≤2.6m, and the height H satisfies 0.8m≤H≤3m; the low-resistance, lightweight blade 1 is composed of a low-resistance, lightweight and strong module with internal reinforcement ribs and a module frame; the ratio of the thickness D of the low-resistance, lightweight module to the width W of the low-resistance, lightweight blade 1 is K, which satisfies 0.01≤K≤0.06, and the low-resistance, lightweight module with a thickness D to width W ratio of K is used to reduce the wind-blocking area of ​​the low-resistance, lightweight blade 1 when guiding wind, and the ventilation resistance caused by it.

[0034] Furthermore, the low-resistance lightweight blade may be a vertically arranged arc-shaped blade, and the ratio of the arc length La to the chord length Lw of the low-resistance lightweight blade is F, satisfying 1≤F≤1.2.

[0035] The low-resistance, light-weight and strong modules are divided into X columns and Y rows, and the module frame is a transverse support frame 4 or a longitudinal support frame 5 or a combination thereof.

[0036] The low-resistance, lightweight and strong module can further be a low-resistance, lightweight and strong module with a sealed end, wherein the sealed end is an integrated sealed overlap end 6 or a split sealed overlap frame 9, which is used to improve the sealing performance of the low-resistance, lightweight blade 1 when blocking the wind.

[0037] The basic principle of the large louver: the width W of the low-resistance lightweight blade 1 satisfies 0.5m≤W≤2.6m, and the height H satisfies 0.8m≤H≤3m, which ensures a large frontal area of ​​the low-resistance lightweight blade 1.

[0038] The low-resistance lightweight blade 1 is a vertically arranged arc-shaped blade, and the ratio of its arc length La to the chord length Lw is F, satisfying 1≤F≤1.2. The arc shape of the low-resistance lightweight blade 1 can effectively improve the guiding effect and ventilation effect during air intake, thereby increasing the effective air intake volume.

[0039] The low-resistance lightweight blade 1 is composed of X columns and Y rows of low-resistance lightweight modules and a module frame, wherein the module frame is a transverse support frame 4 or a longitudinal support frame 5 or a combination thereof, and its wind pressure resistance is improved through modular arrangement; the low-resistance lightweight module is provided with internal reinforcement ribs, which are transverse reinforcement ribs 11 or longitudinal reinforcement ribs 10 or a combination thereof, and the structural strength of the low-resistance lightweight blade 1 is increased by the internal reinforcement ribs, thereby further improving the wind pressure resistance of the low-resistance lightweight blade 1; the ratio K of the thickness D of the low-resistance lightweight module to the width W of the low-resistance lightweight blade 1 satisfies 0.01≤K≤0.06, and the low-resistance lightweight module with a thickness D to width W ratio of K reduces the wind blocking area caused by the thickness of the low-resistance lightweight blade 1 when guiding wind, thereby reducing the ventilation resistance caused by the wind blocking area, and thereby increasing the effective ventilation volume.

[0040] The low-resistance, light-weight and strong module can further be a low-resistance, light-weight and strong module with a sealed end, and the sealed end is an integrated sealed lap end 6 or a split sealed lap frame 9; the sealed end is arranged at the windward side end of the first row of low-resistance, light-weight and strong modules of the low-resistance, light-weight and strong blade 1 and the leeward side end of the Xth row of low-resistance, light-weight and strong modules of the low-resistance, light-weight and strong blade 1. The addition of the sealed end can improve the sealing performance of the low-resistance, light-weight and strong blade 1 when blocking the wind. At the same time, the split sealed lap frame 9 can provide a certain support and fastening effect while playing a sealing role, thereby further improving the wind pressure resistance of the low-resistance, light-weight and light-weight blade 1.

[0041] Example 1: A low-resistance, lightweight large louver with four low-resistance, light-weight modules having a large windward area and capable of resisting high wind pressure.

[0042] like Figure 1 、 Figure 5 (3) Figure 8 As shown in (1), a low-resistance lightweight large louver with a large frontal area and capable of resisting high wind pressure comprises a support frame, a rotating shaft and a low-resistance lightweight blade 1; the support frame comprises an upper support frame 2 and a lower support frame 3, which are used to support and fix the low-resistance lightweight blade 1 and the rotating shaft; the low-resistance lightweight blade 1 is a vertically arranged arc-shaped blade, which is arc-shaped in a top view, with a width W=1.2m and a height H=2m; the ratio of the arc length La to the chord length Lw of the low-resistance lightweight blade 1 is F=1.05; the low-resistance lightweight blade 1 is composed of four low-resistance light-strong modules and a module frame, and the ratio of the thickness D of the low-resistance light-strong module to the width W of the low-resistance lightweight blade 1 is K=0.03. The low-resistance light-strong module with a thickness D to width W ratio K=0.03 is used to reduce the wind-blocking area caused by the thickness of the low-resistance lightweight blade 1 when guiding wind, and the ventilation resistance caused by it.

[0043] The upper support frame 2 is fixedly connected to the upper end of the low-resistance lightweight blade 1; the lower support frame 3 is fixedly connected to the lower end of the low-resistance lightweight blade 1; the material of the support frame is stainless steel; the rotating shaft includes an upper rotating shaft 8 and a lower rotating shaft 7, the upper rotating shaft 8 is arranged on the upper support frame 2, and the lower rotating shaft 7 is arranged on the lower support frame 3, and the material of the rotating shaft is stainless steel.

[0044] The low-resistance, light-weight and strong module is made of a modified polycarbonate material.

[0045] The low-resistance, light-weight and strong modules are divided into X=2 columns, Y=2 rows, W1=W2=W / 2=0.6m, H1=H2=H / 2=1m; the module frame is a combination of a transverse support frame 4 and a longitudinal support frame 5, and its material is stainless steel.

[0046] The inner reinforcement ribs of the low-resistance, light-strength module are transverse reinforcement ribs 11, wherein the thickness Dx of the transverse reinforcement ribs 11 is 20 mm, and the number of the transverse reinforcement ribs 11 in each low-resistance, light-strength module is equal, and both are N. 11 =14.

[0047] The low-drag, lightweight module has a sealed end, which is an integrated sealed overlap end 6. It is integrated into the windward side end of the first row of low-drag, lightweight modules of the low-drag, lightweight blade 1 and the leeward side end of the second row of low-drag, lightweight modules of the low-drag, lightweight blade 1 through one-time extrusion molding by a mold, thereby improving the sealing performance of the low-drag, lightweight blade 1 when blocking the wind.

[0048] Example 2: A low-resistance, lightweight large louver with a large windward area and capable of resisting high wind pressure, which is only provided with one low-resistance, light-weight module.

[0049] like Figure 2 、 Figure 5 (1) and Figure 8 As shown in (2), a low-resistance lightweight large louver with a large frontal area and capable of resisting high wind pressure comprises a support frame, a rotating shaft and a low-resistance lightweight blade 1; the support frame comprises an upper support frame 2 and a lower support frame 3, for supporting and fixing the low-resistance lightweight blade 1 and the rotating shaft; the low-resistance lightweight blade 1 is a vertically arranged arc-shaped blade, which is arc-shaped in top view, with a width W=0.5m and a height H=0.8m; the ratio of the arc length La to the chord length Lw of the low-resistance lightweight blade 1 is F=1.1; the low-resistance lightweight blade 1 is composed of a low-resistance light-strong module and a module frame, and the ratio of the thickness D of the low-resistance light-strong module to the width W of the low-resistance lightweight blade 1 is K=0.01. The low-resistance light-strong module with a thickness D to width W ratio K=0.01 reduces the wind-blocking area caused by the thickness of the low-resistance lightweight blade 1 when guiding wind, and the ventilation resistance caused by it.

[0050] The upper support frame 2 is fixedly connected to the upper end of the low-resistance lightweight blade 1; the lower support frame 3 is fixedly connected to the lower end of the low-resistance lightweight blade 1; the material of the support frame is galvanized steel; the rotating shaft includes an upper rotating shaft 8 and a lower rotating shaft 7, the upper rotating shaft 8 is arranged on the upper support frame 2, and the lower rotating shaft 7 is arranged on the lower support frame 3, and the axes of the upper rotating shaft 8 and the lower rotating shaft 7 are collinear, and the material of the rotating shaft is galvanized steel.

[0051] The material of the low-resistance, light-weight and strong module is polycarbonate.

[0052] The upper support frame 2 and the lower support frame 3 directly serve as the module frame of the low-resistance, light-weight and strong module.

[0053] The inner reinforcement ribs of the low-resistance, light-strength module are longitudinal reinforcement ribs 10; the thickness Dy of the longitudinal reinforcement ribs 10 is 1 mm, and the number M 11 =1.

[0054] The low-resistance, lightweight and strong module has a sealed end, which is an integrated sealed overlap end 6, which is integrated into the windward side end and the leeward side end of the low-resistance, lightweight and strong module by one-time extrusion molding, thereby improving the sealing performance of the low-resistance, lightweight blade 1 when blocking the wind.

[0055] Example 3: A low-resistance, lightweight large louver with a flat plate structure, a large windward area, and the ability to withstand high wind pressure.

[0056] like Figure 3 、 Figure 7 and Figure 8 As shown in (3), a low-resistance lightweight large louver with a large frontal area and capable of resisting high wind pressure comprises a support frame, a rotating shaft and a low-resistance lightweight blade 1; the support frame comprises an upper support frame 2 and a lower support frame 3, for supporting and fixing the low-resistance lightweight blade 1; the low-resistance lightweight blade 1 is a vertically arranged flat blade with a width W=1.8m, a height H=2.4m, and a ratio F=1 of its arc length La to chord length Lw; the low-resistance lightweight blade 1 is composed of two low-resistance light-strong modules and a module frame, and the ratio K=0.018 of the thickness D of the low-resistance light-strong module to the width W of the low-resistance lightweight blade 1 is used to reduce the wind-blocking area caused by the thickness of the low-resistance lightweight blade 1 when guiding wind, and the ventilation resistance caused by it.

[0057] The upper support frame 2 is fixedly connected to the upper end of the low-resistance lightweight blade 1; the lower support frame 3 is fixedly connected to the lower end of the low-resistance lightweight blade 1; the material of the support frame is fiberglass; the rotating shaft includes an upper rotating shaft 8 and a lower rotating shaft 7, the upper rotating shaft 8 is arranged on the upper support frame 2, and the lower rotating shaft 7 is arranged on the lower support frame 3, and the axes of the upper rotating shaft 8 and the lower rotating shaft 7 are collinear, and the material of the rotating shaft is stainless steel.

[0058] The material of the low-resistance, light-weight and strong module is a modified material of polyvinyl chloride.

[0059] X=1, Y=2, and H1=H2=H / 2=1.2m; the module frame is a transverse support frame 4, which is made of aluminum alloy.

[0060] The inner reinforcement ribs of the low-resistance, light-strength module are a combination of longitudinal reinforcement ribs 10 and transverse reinforcement ribs 11; wherein the thickness of the longitudinal reinforcement ribs 10 is Dy = 10 mm, and the number of longitudinal reinforcement ribs in each low-resistance, light-strength module is M. 11 =5; the thickness of the transverse reinforcement rib 11 Dx = 12mm, the number N in a single low-resistance light-strength module 11 =10, N 12 =12.

[0061] The low-resistance, lightweight and strong module has a sealed end, which is an integrated sealed overlap end 6, which is integrated into the windward side end and the leeward side end of the low-resistance, lightweight and strong module through one-step molding of a mold, thereby improving the sealing performance of the low-resistance, lightweight blade 1 when blocking the wind.

[0062] Example 4: A low-resistance, lightweight large louver with a large windward area and capable of resisting high wind pressure is arranged with 8 low-resistance, light-weight modules.

[0063] like Figure 4 、 Figure 5 (4) and Figure 8 As shown in (1), a low-resistance lightweight large louver with a large frontal area and capable of resisting high wind pressure comprises a support frame, a rotating shaft and a low-resistance lightweight blade 1; the support frame comprises an upper support frame 2 and a lower support frame 3, which are used to support and fix the low-resistance lightweight blade 1 and the rotating shaft; the low-resistance lightweight blade 1 is a vertically arranged arc-shaped blade, which is arc-shaped in a top view, with a width W=2m and a height H=2.5m. The ratio of the arc length La to the chord length Lw of the low-resistance lightweight blade 1 is F=1.2; the low-resistance lightweight blade 1 is composed of 8 low-resistance light-strong modules and a module frame, and the ratio of the thickness D of the low-resistance light-strong module to the width W of the low-resistance lightweight blade 1 is K=0.06. The low-resistance light-strong module with a thickness D to width W ratio K=0.06 reduces the wind-blocking area caused by the thickness of the blade 1 when it guides the wind, and the ventilation resistance caused by it.

[0064] The upper support frame 2 is fixedly connected to the upper end of the low-resistance lightweight blade 1; the lower support frame 3 is fixedly connected to the lower end of the low-resistance lightweight blade 1; the material of the support frame is stainless steel; the rotating shaft includes an upper rotating shaft 8 and a lower rotating shaft 7, the upper rotating shaft 8 is arranged on the upper support frame 2, and the lower rotating shaft 7 is arranged on the lower support frame 3, and the axes of the upper rotating shaft 8 and the lower rotating shaft 7 are collinear, and the material of the rotating shaft is stainless steel.

[0065] The material of the low-resistance, light-weight and strong module is a modified material of polypropylene.

[0066] The module frame is a combination of a transverse support frame 4 and a longitudinal support frame 5, and is made of galvanized steel; wherein X=2, Y=4, W1=W2=W / 2=1m, H1=H4=0.5m, H2=H3=0.75m.

[0067] The inner reinforcement ribs of the low-resistance, light-strength module are transverse reinforcement ribs 11; wherein the thickness Dx of the transverse reinforcement ribs 11 is 10 mm, and the number N in a single low-resistance, light-strength module is 11 =N 12 =N 41 =N 42 =50=H1 / Dx, that is, the interior of the four low-resistance, light-weight and strong modules is a solid structure, N 21 =N 22 =N 31 =N 32 =30.

[0068] The low-drag, light-strong module has a sealed end, which is a split sealed lap frame 9, which is fixed to the windward side end of the first row of low-drag, light-strong modules of the low-drag, lightweight blade 1 and the leeward side end of the second row of low-drag, light-strong modules of the low-drag, lightweight blade 1 by welding or bolts, thereby improving the sealing performance of the blade 1 when blocking the wind.

[0069] Example 5: A low-resistance, lightweight large louver with a large windward area and capable of resisting high wind pressure is arranged with 100 low-resistance, light-weight modules.

[0070] like Figure 6 and Figure 8 As shown in (3), a low-resistance lightweight large louver with a large frontal area and capable of resisting high wind pressure comprises a support frame, a rotating shaft and a low-resistance lightweight blade 1; the support frame comprises an upper support frame 2 and a lower support frame 3, which are used to support and fix the low-resistance lightweight blade 1 and the rotating shaft; the low-resistance lightweight blade 1 is a vertically arranged arc-shaped blade, which is arc-shaped in a top view, with a width W=2.6m, a height H=3m, and a width W equal to a chord length Lw; the ratio F=1.18 of the arc length La to the chord length Lw of the low-resistance lightweight blade 1; the low-resistance lightweight blade 1 is composed of 10×10=100 low-resistance light-strong modules and a module frame, and the ratio K=0.02 of the thickness D of the low-resistance light-strong module to the width W of the low-resistance lightweight blade 1 is used to reduce the wind-blocking area caused by the thickness of the low-resistance lightweight blade 1 when guiding wind, and the ventilation resistance caused by it.

[0071] The upper support frame 2 is fixedly connected to the upper end of the low-resistance lightweight blade 1; the lower support frame 3 is fixedly connected to the lower end of the low-resistance lightweight blade 1; the material of the support frame is stainless steel; the rotating shaft includes an upper rotating shaft 8 and a lower rotating shaft 7, the upper rotating shaft 8 is arranged on the upper support frame 2, and the lower rotating shaft 7 is arranged on the lower support frame 3, and the axes of the upper rotating shaft 8 and the lower rotating shaft 7 are collinear, and the material of the rotating shaft is galvanized steel.

[0072] The material of the low-resistance, light-weight and strong module is a modified material of polypropylene.

[0073] The module frame is a combination of a transverse support frame 4 and a longitudinal support frame 5, and is made of stainless steel. The width of each low-resistance, light-weight module is W 11 =W / X=0.26m, height is H 11 =H / Y=0.3m.

[0074] The inner reinforcement ribs of the low-resistance, light-strength module are a combination of longitudinal reinforcement ribs 10 and transverse reinforcement ribs 11; wherein the thickness of the longitudinal reinforcement ribs 10 is Dy = 5 mm, and the number of the longitudinal reinforcement ribs in each low-resistance, light-strength module is M 11 =24; the thickness of the transverse reinforcement rib 11 Dx = 4mm, the number N in a single low-resistance light-strength module 11 =30.

[0075] In some embodiments, the number of columns and rows of the low-resistance, lightweight modules can be adjusted and determined according to actual implementation requirements, and the width of each column and the height of each row can also be independently configured according to requirements, but it must be satisfied that the sum of the column widths is equal to the width of the low-resistance, lightweight blade 1, and the sum of the row heights is equal to the height of the low-resistance, lightweight blade 1; the internal reinforcement rib arrangement of each low-resistance, lightweight module can be independently configured according to actual requirements.

[0076] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary implementation cases, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the implementation cases should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0077] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A low-resistance, lightweight large louver with a large frontal area and the ability to withstand high wind pressure, comprising a support frame, a rotating shaft, and low-resistance, lightweight blades, characterized in that: The support frame includes an upper support frame and a lower support frame, which are used to support and fix the low-drag lightweight blade and the rotating shaft; the low-drag lightweight blade is a vertically arranged blade; the horizontal span between the windward and leeward ends of the low-drag lightweight blade is its width W, which satisfies 0.5m≤W≤2.6m; the vertical distance between the upper and lower ends of the low-drag lightweight blade is its height H, which satisfies 0.8m≤H≤3m; the low-drag lightweight blade is composed of a low-drag, light-strong module and a module frame, wherein the low-drag, light-strong module is a plate with internal reinforcing ribs, and the module frame is a transverse support frame or a longitudinal support frame or a combination thereof; the wind pressure resistance of the blade is improved by the combination of the low-drag, light-strong module and the module frame; the ratio of the thickness D of the low-drag, light-strong module to the width W of the low-drag lightweight blade is K, which satisfies 0.01≤K≤0.

06. The low-drag, light-strong module with a ratio of thickness D to width W of the low-drag lightweight blade is K, which reduces the windshield area of ​​the blade when guiding wind and the ventilation resistance caused by its thickness.

2. The low-resistance, lightweight large louver with a large frontal area and the ability to withstand high wind pressure according to claim 1, characterized in that: The upper support frame is fixedly connected to the upper end of the low-resistance lightweight blade; the lower support frame is fixedly connected to the lower end of the low-resistance lightweight blade; the material of the support frame is one or more of galvanized steel, fiberglass, stainless steel or aluminum alloy; the rotating shaft includes an upper rotating shaft and a lower rotating shaft, the upper rotating shaft is arranged on the upper support frame, and the lower rotating shaft is arranged on the lower support frame, and the material of the rotating shaft is stainless steel or galvanized steel.

3. The low-resistance, lightweight large louver with a large frontal area and the ability to withstand high wind pressure according to claim 1, characterized in that: Furthermore, the low-drag lightweight blade is also configured as a vertically arranged arc blade, and the ratio of the arc length La to the chord length Lw of the low-drag lightweight blade is F, satisfying 1≤F≤1.2; the arc length La is the curve length of the arc center line in the top view of the low-drag lightweight blade; the chord length Lw is the straight-line distance between the two end points of the arc center line in the top view of the low-drag lightweight blade.

4. The low-resistance, lightweight large louver with a large frontal area and the ability to withstand high wind pressure according to claim 1, characterized in that: The low-resistance, light-weight and strong modules are arranged in X rows from the windward side to the leeward side along the width direction of the low-resistance, light-weight blade, and the width of the first row is W. I , where 1≤X≤10, W I is an independently configurable positive number, I=1, 2,…, X, and satisfies ∑W I = W; the low-resistance and light-strength modules are arranged in Y rows from bottom to top along the height direction of the low-resistance and lightweight blade, and the height of the J row is H J , where 1≤Y≤10, H J is an independently configurable positive number, J = 1, 2, ..., Y, and satisfies ∑H J =H.

5. The low-resistance, lightweight large louver with a large frontal area and capable of resisting high wind pressure according to claim 4, characterized in that: The material of the low-resistance, light-weight and strong module is one or more of polycarbonate, polyvinyl chloride, polypropylene, ABS, or one or any combination of modified materials thereof.

6. The low-resistance, lightweight large louver with a large frontal area and capable of resisting high wind pressure according to claim 5, characterized in that: The internal reinforcement ribs are longitudinal reinforcement ribs or transverse reinforcement ribs or a combination thereof; the longitudinal reinforcement ribs are arranged inside the low-resistance, light-strength module along the height direction of the low-resistance, lightweight blade; the transverse reinforcement ribs are arranged inside the low-resistance, light-strength module along the width direction of the low-resistance, lightweight blade.

7. The low-resistance, lightweight large louver with a large frontal area and the ability to withstand high wind pressure according to claim 6, characterized in that: The thickness of the longitudinal reinforcement rib is Dy, 1mm≤Dy≤20mm, and the number of the longitudinal reinforcement ribs in a single low-resistance, light-strength module is M. IJ , M IJ is a positive integer that can be independently configured; the thickness of the transverse reinforcement rib is Dx, 1mm≤Dx≤20mm, and the number in a single low-resistance, light-strength module is N IJ , N IJ is an independently configurable positive integer; when M IJ ≥W I / Dy or N IJ ≥H J / Dx, the low-resistance, light-weight and strong module is a solid structure.

8. The low-resistance, lightweight large louver with a large frontal area and the ability to withstand high wind pressure according to claim 1, characterized in that: The module frame is made of one or more of galvanized steel, fiberglass, stainless steel or aluminum alloy.

9. The low-resistance, lightweight large louver with a large frontal area and the ability to withstand high wind pressure according to claim 7, characterized in that: The low-drag, light-strong module is further configured as a low-drag, light-strong module with a sealed end or a low-drag, light-strong module without a sealed end; the sealed end is an integrated sealed lap end or a split sealed lap frame; the integrated sealed lap end and the low-drag, light-strong module are an integrally formed structure; the integrated sealed lap end is integrated into the windward side end of the first row of low-drag, light-strong modules of the low-drag, lightweight blade and the leeward side end of the Xth row of low-drag, light-strong modules of the low-drag, lightweight blade.

10. The low-resistance, lightweight large louver with a large frontal area and the ability to withstand high wind pressure according to claim 9, characterized in that: The split sealed lap frame and the low-drag, light-strong module are split structures; the split sealed lap frame is fixed to the windward side end of the first row of low-drag, light-strong modules of the low-drag, lightweight blade and the leeward side end of the Xth row of low-drag, light-strong modules of the low-drag, lightweight blade.

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