Modular ventilation unit that takes into account the variation of the wind speed along the elevation

Abstract

A modular ventilation unit considering the change of environmental wind speed along the elevation, belonging to the technical field of ventilation and air conditioning, comprising a support frame and a modular ventilation assembly; the support frame comprises a left support and a right support for fixing and supporting the modular ventilation assembly; the modular ventilation assembly comprises M layers of ventilation flow guide modules arranged along the vertical direction; the first layer of ventilation flow guide modules comprises N I wind control modules arranged along the horizontal direction; the width of the wind control module is independently configured based on the change of environmental wind speed along the elevation, so that the overall size of the modular ventilation assembly presents a trend of adapting to the change of environmental wind speed from bottom to top, thereby improving the flow and ventilation effect of the modular ventilation unit along the elevation; the height of the wind control module of each layer can be independently configured. The width of the uppermost layer of wind control module can also be appropriately reduced based on its stability. It also comprises M+1 cross supports, and the wind control module can also be arranged in rotation when installed between the corresponding layer cross supports.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of building ventilation and air conditioning, and particularly relates to a modularized ventilation unit which comprehensively considers the change of the wind speed of an ambient wind along an elevation. BACKGROUND

[0002] In the application of building natural ventilation, when the wind flows through a large blunt structure (such as a building facade), a large range of low pressure vortex area will be formed on the leeward side of the structure. This phenomenon not only significantly increases the wind load on the structure, but also seriously hinders the efficient passage of fluid. The crosswind inertia force formed by the ambient wind will reduce the actual air intake of the building and the ventilation effect.

[0003] To solve this situation, vertical louvers or guide plates and other guide control devices are usually used. The windward side of the guide control device plays a role in guiding and strengthening ventilation, while the leeward side will induce vortex to form a certain ventilation resistance. The beneficial effect of the windward side guiding and strengthening ventilation and the adverse effect of the leeward side vortex additional resistance are related to the ambient wind speed and the size of the guide control device. However, the conventional guide control device does not consider the change of the ambient wind speed along the height direction, so it cannot maximize the beneficial effect of the windward side guiding and strengthening ventilation while minimizing the adverse effect of the leeward side vortex additional resistance.

[0004] In the actual natural environment, with the change of the height of the location, the ambient wind speed will change, especially the near-surface wind speed will increase with the height in a regular distribution, forming a so-called "wind speed profile", as shown in Figure 10 The relationship between the wind speed and the height in the wind speed profile usually follows a power-law distribution, and its expression is . Where u is the wind speed at height z, m / s; u1 is the wind speed value measured at z1 height, usually taken as the wind speed at 10m height, m / s; α is a constant related to stability, which is closely related to the surface roughness and atmospheric stability, and α generally takes a value range of 0~0.6, and as it increases, the wind speed u at height z changes more (for details, see Yao Zengquan, Transmission and Diffusion of Flue Gas in Thermal Power Plants, China Electric Power Press, 2003 edition, page 40).

[0005] And the existing device is mostly in the form of one-piece molding or integral welding, which lacks reconfigurability and modular design, resulting in high production cost, inconvenience in installation and transportation, and difficulty in maintenance when local damage occurs.

[0006] In addition, although some studies attempt to improve the flow field by using the principle of jet flow, most of them do not systematically consider the vertical distribution characteristics of the environmental wind speed, and cannot provide a flexible solution that can be optimized for the specific site wind profile. Therefore, there is an urgent need in the art for a new type of guide flow technology that can effectively respond to the change of environmental wind speed along the height, with economy and easy maintenance, to improve the comprehensive performance of the ventilation structure in the real three-dimensional environmental wind field. SUMMARY

[0007] To solve the above-mentioned technical problems, the present application proposes a modular ventilation unit that comprehensively considers the change of environmental wind speed along the height. By adaptively setting the width of the wind control fan blades of different layers based on the wind speed profile, the overall size of the modular ventilation assembly is adapted to the trend of the change of environmental wind speed along the height from bottom to top, thereby improving the guide flow and ventilation effect of the modular ventilation unit.

[0008] The specific scheme for solving the above-mentioned existing problems is: a modular ventilation unit that comprehensively considers the change of environmental wind speed along the height, comprising a support frame and a modular ventilation assembly, the support frame comprising a left support and a right support for fixing and supporting the modular ventilation assembly; the modular ventilation assembly comprising M layers of ventilation guide modules stacked in order from bottom to top, M being a positive integer; the Ith layer of the ventilation guide module comprising N I guide flow and wind control modules arranged in the horizontal direction, wherein N I is an integer greater than 1 that can be independently configured, I=1, 2, …, M, I=1 corresponding to the first layer of ventilation guide module, i.e. the bottom layer, I=M corresponding to the Mth layer of ventilation guide module, i.e. the top layer; the width of the guide flow and wind control module is independently configured based on the change of environmental wind speed along the height, so that the overall size of the modular ventilation assembly presents a trend of adapting to the change of environmental wind speed along the height from bottom to top, thereby improving the guide flow and ventilation effect of the modular ventilation unit along the height; the height of the guide flow and wind control module of each layer of the ventilation guide module can be independently configured.

[0009] The guide and wind control module is a wind control fan blade, and the vertical edge of the windward side of the wind control fan blade is in an arc shape, an inclined shape or a vertical shape; when the vertical edge of the windward side of the wind control fan blade is in an arc shape, the curvature of the arc is determined based on the change of the environmental wind speed along the elevation to optimize the adaptability of the wind control fan blade to the change of the environmental wind speed along the elevation; further, the vertical edge of the air outlet side of the wind control fan blade is in an arc shape, an inclined shape or a vertical shape; when the vertical edge of the windward side and / or the vertical edge of the air outlet side of the wind control fan blade is in an arc shape or an inclined shape, each wind control fan blade itself has a structure of being wide at the top and narrow at the bottom, and the minimum width of the wind control fan blade at the top is greater than or equal to the maximum width of the wind control fan blade directly below; the minimum width refers to the minimum horizontal width of the wind control fan blade in the height direction; the maximum width refers to the maximum horizontal width of the wind control fan blade in the height direction; when the vertical edge of the windward side and / or the vertical edge of the air outlet side of the wind control fan blade is in a vertical shape, the width of the wind control fan blade at the top is greater than or equal to the width of the wind control fan blade below, so that the modular ventilation assembly forms an inverted stepped profile on the windward side and / or the air outlet side.

[0010] The structure of the wind control fan blade is a flat plate or an arc-shaped plate; the flat plate refers to the projection of the wind control fan blade on the horizontal plane being a straight line; the arc-shaped plate refers to the projection of the wind control fan blade on the horizontal plane being an arc; when the vertical edge of the windward side and / or the vertical edge of the air outlet side of the wind control fan blade is in an arc shape or an inclined shape, the minimum width of the wind control fan blade satisfies 0.4m-4m, and the maximum width of the wind control fan blade satisfies 0.5m-4m; when the vertical edge of the windward side and / or the vertical edge of the air outlet side of the wind control fan blade is in a vertical shape, the width of the wind control fan blade satisfies 0.5m-4m.

[0011] The panel of the wind control fan blade is in a sealed type or a gap type; the sealed type means that the wind control fan blade itself has no any hole; the gap type means that the wind control fan blade itself has a gap near the windward side to eliminate vortex on the leeward side of the wind control fan blade.

[0012] When M≥3, further, the width of the wind control fan blade in the Mth layer at the top of the ventilation guide module is less than or equal to the width of the wind control fan blade in the (M-1)th layer, to ensure the running stability of the modular ventilation assembly.

[0013] The projection of the guide and wind control module of the ventilation guide module in the first layer on the horizontal plane has a bias angle θ with the vertical line of the connecting line of the projections of the left support and the right support on the horizontal plane to the environmental wind side I , wherein 0°≤θ I ≤45°, the bias angle of the guide and wind control module of different layers is independently set based on the change of the environmental wind speed along the elevation, and the bias angle of the guide and wind control module at the top is greater than or equal to the bias angle of the guide and wind control module at the next layer.

[0014] The left support and the right support are single columns or multiple columns; the multiple columns refer to multiple columns arranged from the windward side to the outflow side; when the number N of the flow guide and air control modules in each layer of the ventilation flow guide module is 2 I =2, the flow guide and air control modules are installed on the left support and the right support.

[0015] Further, the support frame further comprises M+1 cross supports connected between the left support and the right support; the cross supports are horizontally arranged and divide the space between the left support and the right support into M layers; when the number N of the flow guide and air control modules in each layer of the ventilation flow guide module is 2 I =2, the flow guide and air control modules are installed only between the upper and lower cross supports of the corresponding layer, or one is installed on the left support or the right support, and the other is installed between the upper and lower cross supports of the corresponding layer; when the number N of the flow guide and air control modules in each layer of the ventilation flow guide module is 3 I =3, the flow guide and air control modules are installed on the left support, the right support and the upper and lower cross supports of the corresponding layer, or only between the upper and lower cross supports of the corresponding layer.

[0016] When the flow guide and air control modules are installed between the upper and lower cross supports of the corresponding layer, the installation mode of the flow guide and air control modules is fixed or rotatable; the rotatable type is that the flow guide and air control modules are connected with the cross supports through a rotating shaft and can rotate horizontally around the rotating shaft.

[0017] The material of the air control fan blades is one or more of conventional plates and sound-absorbing plates; the conventional plates include one or more of aluminum alloy, galvanized steel, stainless steel, glass steel and engineering plastic; the sound-absorbing plates are porous sound-absorbing materials, including one or more of glass wool, rock wool, mineral wool, polyester fiber cotton, wood fiber board, open-cell polyurethane foam and melamine foam.

[0018] Compared with the prior art, the beneficial effects of the present application are: the modularized air guiding and ventilating unit is formed, the width of the air guiding and controlling module of each layer of the air guiding and ventilating module is independently configured based on the change of the wind speed along the elevation of the ambient wind, the overall size of the modularized ventilation assembly is adapted to the change trend of the ambient wind speed from bottom to top, the modularized ventilation unit is more adapted to the flow characteristics of the wind field, and thus the air guiding effect of the modularized ventilation unit along the elevation is improved. In order to ensure the stability of the ventilation unit, the width of the uppermost layer of the air controlling fan blade can be appropriately reduced, and the adverse effects of the flow around the wind field caused by the excessively large width of the air controlling fan blade can be reduced. According to actual needs, the number of the air controlling fan blades of each layer can be adjusted, the installation mode of the air controlling fan blades arranged on the cross support can be fixed or rotatable, the air controlling fan blades can be arranged at multiple angles, and when the sum of the widths of the air guiding and controlling modules is greater than or equal to the distance between the left support and the right support, the side edges of the left and right adjacent air guiding and controlling modules are matched with each other to form a continuous and gapless barrier, so that the ventilation unit is completely closed. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a modularized ventilation unit structure considering the change of the ambient wind speed along the elevation.

[0020] Figure 2 It is a modularized ventilation unit structure considering the change of the ambient wind speed along the elevation. Figure 2 (a) is a structure diagram in which the vertical edge is vertical and the windward side is an inverted ladder-shaped profile, Figure 2 (b) is a structure diagram in which the vertical edge is vertical and the air outlet side is an inverted ladder-shaped profile, Figure 2 (c) is a structure diagram in which the vertical edge is vertical and the windward side and the air outlet side are inverted ladder-shaped profiles, Figure 2 (d) is a structure diagram in which the vertical edge of the windward side is inclined and the vertical edge of the air outlet side is vertical, Figure 2 (e) is a structure diagram in which the vertical edge of the windward side is vertical and the vertical edge of the air outlet side is inclined, Figure 2 (f) is a structure diagram in which the vertical edges of the windward side and the air outlet side are both inclined, Figure 2 (g) is a structure diagram in which the vertical edge of the windward side is an arc line and the vertical edge of the air outlet side is vertical, Figure 2 (h) is a structure diagram in which the vertical edge of the windward side is vertical and the vertical edge of the air outlet side is an arc line, Figure 2 (i) is a structure diagram in which the vertical edges of the windward side and the air outlet side are both arc lines.

[0021] Figure 3 It is a modularized ventilation unit structure in which the vertical edge of the windward side is inclined, Figure 3(a) is the schematic diagram of the overall structure of the modular ventilation unit with inclined vertical edges, Figure 3 (b) is the schematic diagram of the modular ventilation unit structure with inclined vertical edges on the windward side.

[0022] Figure 4 Schematic diagram of the modular ventilation unit structure with the width of the uppermost layer reduced for stability.

[0023] Figure 5 Schematic diagram of the modular ventilation unit structure with vertical edges on the windward side and three widths of the lowermost layer, the middle layer and the uppermost layer.

[0024] Figure 6 Schematic diagram of the modular ventilation unit structure with two widths of the lowermost layer and other upper layers.

[0025] Figure 7 Schematic diagram of the modular ventilation unit structure disclosed in the present application with a bias angle, wherein Figure 7 (a) is the schematic diagram of the three-dimensional structure of the modular ventilation unit with a bias angle, Figure 7 (b) is the schematic diagram of the top view of the modular ventilation unit with a bias angle.

[0026] Figure 8 Schematic diagram of the modular ventilation unit structure disclosed in the present application with different numbers of fan blades for each layer of wind control, wherein Figure 8 (a) is the schematic diagram of the modular ventilation unit with different numbers of fan blades for each layer of wind control in the fully open state, Figure 8 (b) is the schematic diagram of the modular ventilation unit with different numbers of fan blades for each layer of wind control in the partially closed state.

[0027] Figure 9 Schematic diagram of the modular ventilation unit structure with multiple columns of left and right supports.

[0028] Figure 10 Schematic diagram of the wind speed profile function curve.

[0029] In the figure: 1-left support, 2-right support, 3-wind control fan blade, 4-cross support, 5-vortex elimination gap. DETAILED DESCRIPTION

[0030] The present application 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 application, and any changes in structure, method or function made by those of ordinary skill in the art based on these embodiments are included within the scope of protection of the present application.

[0031] The structure, proportion, size, etc. shown in the accompanying drawings are only used to cooperate with the disclosed content, to be understood and read by those skilled in the art, and are not used to limit the defined conditions that the application can be implemented, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that the application can produce, should still fall within the scope that the disclosed technology can cover. At the same time, the terms such as "upper", "lower", "left", "right" and the like in the specification are only for the convenience of clear description, and are not used to limit the scope of the application, and the change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the implementation scope of the application.

[0032] A modular ventilation unit considering the change of ambient wind speed along the elevation, comprising a support frame and a modular ventilation assembly, the support frame comprising a left support 1 and a right support 2 for fixing and supporting the modular ventilation assembly; the modular ventilation assembly comprising M layers of ventilation and flow guide modules arranged in the vertical direction, M being a positive integer; the ventilation and flow guide module of the Ith layer comprising N I flow control modules arranged in the horizontal direction, wherein N I is an integer greater than 1 that can be independently configured, I = 1, 2, …, M; the width of the flow control fan blade 3 is independently configured based on the change of ambient wind speed along the elevation, so that the overall size of the modular ventilation assembly presents a trend of adapting to the change of ambient wind speed from bottom to top, thereby improving the ventilation and flow guide effect of the modular ventilation unit along the elevation; the height of the flow control fan blade 3 of each layer of the ventilation and flow guide module can be independently configured.

[0033] As Figure 2 shown, the windward side vertical edge and the air outlet side vertical edge of the flow control fan blade 3 are in arc shape, inclined shape or vertical shape; further, the width of the flow control and flow guide module in the uppermost layer of the ventilation and flow guide module can be appropriately reduced to ensure the operation stability, so as to avoid the adverse effects caused by too large width.

[0034] Further, the number of flow control and flow guide modules of each layer of ventilation and flow guide module is independently configured and can be unequal; when N I = 2, the flow control and flow guide modules are installed and arranged between the upper and lower two horizontal supports 4 of the corresponding layer arranged horizontally between the left support 1 and the right support 2 or between the left support 1 or the right support 2 and the upper and lower two horizontal supports 4 of the corresponding layer; when N I ≥ 3, the flow control and flow guide modules are installed and arranged between the left support 1, the right support 2 and the upper and lower two horizontal supports 4 of the corresponding layer, or only between the upper and lower two horizontal supports 4 of the corresponding layer; when the flow control and flow guide modules are installed between the upper and lower two horizontal supports 4 of the corresponding layer, the flow control and flow guide modules are installed in a fixed or rotatable manner.

[0035] Further, when installed in a rotatable manner, the vertical edges of the air flow control module are vertical, all the air flow control modules in a layer of the air flow control module are rotated to the closed position, and the sum of the widths of the air flow control modules in the layer is greater than or equal to the distance between the two vertical columns, the side edges of the left and right adjacent air flow control modules cooperate with each other to form a continuous and gapless barrier, thereby realizing complete closure of the ventilation unit.

[0036] Example 1: Modular ventilation unit with air control fan blades having vertical vertical edges.

[0037] As shown in Figure 1 , a modular ventilation unit considering the wind speed along the elevation change of the environment, comprising a support frame and a modular ventilation assembly; the modular ventilation assembly comprises 4 layers (M=4) of air flow control modules arranged in the vertical direction, each layer containing 3 (N1=N2=N3=N4=3) air control fan blades 3 arranged in the horizontal direction. The support frame includes a left support 1 and a right support 2, and the left support 1 and the right support 2 are both single vertical columns.

[0038] Based on the wind speed profile function with a power index of 0.28, the windward side and the outflow side vertical edges of the air control fan blade 3 are both vertical, and an inverted stepped profile is formed on the windward side; the widths of the air control fan blades 3 from bottom to top are W1=750mm, W2=960mm, W3=1100mm, and W4=1200mm.

[0039] The air control fan blade 3 adopts a sealed flat plate, and the material is engineering plastic and stainless steel.

[0040] The bias angles of the air control fan blades 3 of different layers on the same vertical column are all 0°.

[0041] Between the left support 1 and the right support 2, there are also 5 cross braces 4, among which two columns of air control fan blades 3 are directly fixed on the side surfaces of the left support 1 and the right support 2, and the remaining column of air control fan blades 3 is installed and fixed between the upper and lower cross braces 4 of the corresponding layer.

[0042] Further, on the basis of this structure, according to the wind speed profile, the modular ventilation assembly can also form an inverted stepped profile on the outflow side.

[0043] Example 2: Modular ventilation unit with air control fan blades having inclined vertical edges.

[0044] As shown in Figure 3A modular ventilation unit considering the change of ambient wind speed along the elevation, comprising a support frame and a modular ventilation assembly; the modular ventilation assembly comprises 4 layers (M=4) of ventilation flow guide modules arranged along the vertical direction, and each layer comprises 3 (N1=N2=N3=N4=3) wind control fan blades 3 arranged along the horizontal direction.

[0045] As shown in (a) and (b) of Figure 3 Based on the wind speed profile function with the power index of 0.35, the windward vertical edge of the wind control fan blade 3 is of the inclined type, and the leeward vertical edge is of the vertical type. The minimum width of the upper layer of wind control fan blades 3 is equal to the maximum width of the wind control fan blade 3 directly below it, the minimum width of the lowermost layer is 500 mm, and the maximum width of the uppermost layer is 1300 mm.

[0046] The wind control fan blade 3 adopts a sealed flat plate, and the material is engineering plastic and stainless steel.

[0047] The support frame comprises a left support 1, a right support 2, and 5 cross supports 4 arranged therebetween, and the left support 1 and the right support 2 are both single columns; two columns of wind control fan blades 3 are directly fixed on the side surfaces of the left support 1 and the right support 2, and the remaining column of wind control fan blades 3 is installed and fixed between the upper and lower cross supports 4 of the corresponding layer.

[0048] Further, when the power index of the wind speed profile function of the installation site tends to 0 or even equals to 0, the widths of the wind control fan blades 3 from bottom to top are almost or directly equal, that is, the inclination of the current vertical edge tends to or equals to 0.

[0049] Embodiment 3: A modular ventilation unit reducing the width of the uppermost layer of wind control fan blades.

[0050] As shown in (a) and (b) of Figure 4 A modular ventilation unit considering the change of ambient wind speed along the elevation, comprising a support frame and a modular ventilation assembly; the support frame comprises a left support 1 and a right support 2, and both are single columns; the modular ventilation assembly comprises 4 layers (M=4) of ventilation flow guide modules arranged along the vertical direction, and each layer comprises 2 (N1=N2=N3=N4=2) wind control fan blades 3 arranged along the horizontal direction.

[0051] Based on the wind speed profile function with the power index of 0.18, the windward vertical edge and the leeward vertical edge of the wind control fan blade 3 are both of the vertical type, and the widths from bottom to top are W1=800 mm, W2=950 mm, W3=1100 mm, and W4=960 mm, respectively.

[0052] The wind control fan blade 3 adopts a sealed flat plate, and the material is galvanized steel and stainless steel.

[0053] The bias angles of the wind control fan blades 3 are all 0°.

[0054] Both rows of control fan blades 3 are directly fixed on the left support 1 and the right support 2.

[0055] Embodiment 4: Modular ventilation unit with equal width of control fan blades of adjacent two layers of ventilation guide modules.

[0056] As shown in Figure 5 , a modular ventilation unit considering the change of wind speed along the elevation of the environment, comprising a support frame and a modular ventilation assembly; the modular ventilation assembly comprises 4 layers (M=4) of ventilation guide modules arranged in the vertical direction, each layer containing 4 (N1=N2=N3=N4=4) control fan blades 3 arranged in the horizontal direction.

[0057] Based on the wind speed profile function with a power index of 0.15, the vertical edges of the windward side and the outflow side of the control fan blades 3 are vertical, wherein the widths of the control fan blades 3 of the middle two layers of ventilation guide modules are equal, and the widths from bottom to top are W1=750mm, W2=W3=900mm, and W4=1000mm.

[0058] The control fan blades 3 adopt sealed flat plates, and the material is selected to be porous to eliminate noise from the inside to the outside.

[0059] The bias angles of the control fan blades 3 are all 0°.

[0060] The support frame comprises a left support 1, a right support 2, and 5 cross supports 4 arranged therebetween, and all the control fan blades 3 are installed between the upper and lower cross supports of the corresponding layer by fixed installation.

[0061] Embodiment 5: Modular guide ventilation unit with equal width of control fan blades of adjacent multiple layers of ventilation guide modules.

[0062] As shown in Figure 6 , a modular ventilation unit considering the change of wind speed along the elevation of the environment, comprising a support frame and a modular ventilation assembly; the modular ventilation assembly comprises 4 layers (M=4) of ventilation guide modules arranged in the vertical direction, each layer containing 2 (N1=N2=N3=N4=2) control fan blades 3 arranged in the horizontal direction.

[0063] Based on the wind speed profile function with a power index of 0.2, the vertical edges of the windward side and the outflow side of the control fan blades 3 are vertical, wherein the widths of the control fan blades 3 of the upper three layers of ventilation guide modules are equal, and from bottom to top, the widths of the left column are W1=750mm, W2=W3=W4=1000mm, and the widths of the right column are W 11 =800mm, W 21 =W 31 =W 41 =1050mm.

[0064] The fan blade 3 is made of sealed arc-shaped plate and is made of engineering plastic.

[0065] The offset angle of the control fan blades 3 is 0°.

[0066] The support frame includes a left support 1, a right support 2, and five horizontal supports 4 set between them. The two rows of control fan blades 3 are installed between the upper and lower horizontal supports of the corresponding layer.

[0067] Example 6: Modular ventilation units arranged with different offset angles.

[0068] like Figure 7 As shown in (a), a modular ventilation unit that comprehensively considers the variation of ambient wind speed along elevation includes a support frame and a modular ventilation component; the modular ventilation component includes a 4-layer (M=4) ventilation guide module arranged vertically, each layer containing 3 (N1=N2=N3=N4=3) control fan blades 3 arranged horizontally; the support frame includes a left support 1 and a right support 2, both of which are single columns.

[0069] Based on the wind speed profile function with a power exponent of 0.28, the vertical sides of the windward and exhaust sides of the control fan blade 3 are both vertical, and an inverted stepped profile is formed on the windward side; the widths of the control fan blade 3 from bottom to top are W1=750mm, W2=960mm, W3=1100mm, and W4=1200mm, respectively.

[0070] The fan blade 3 is a sealed flat plate made of engineering plastic and stainless steel.

[0071] like Figure 7 As shown in (b), the offset angles of the control fan blades 3 on different layers of the same vertical column are 0°, 5°, 10° and 15° from bottom to top, respectively.

[0072] Five horizontal supports 4 are also provided between the left support 1 and the right support 2. Two rows of control fan blades 3 are directly fixed to the sides of the left support 1 and the right support 2, and the remaining row of control fan blades 3 is installed and fixed between the upper and lower horizontal supports 4 of the corresponding layer.

[0073] Example 7: Modular ventilation units with different numbers of fan blades on each floor.

[0074] like Figure 8As shown in (a) and (b), a modular ventilation unit that comprehensively considers the variation of ambient wind speed along elevation includes a support frame and a modular ventilation component; the modular ventilation component includes four layers (M=4) of ventilation guide modules arranged vertically, with the number of fan blades 3 in each layer from bottom to top being N1=6, N2=5, N3=4, and N4=5, respectively; the support frame includes a left support 1 and a right support 2, both of which are single columns.

[0075] Based on the wind speed profile function with a power exponent of 0.15, the vertical sides of the windward and exhaust sides of the control fan blade 3 are both vertical, with widths from bottom to top of W1=750mm, W2=W4=850mm, and W3=1000mm, forming an inverted stepped profile on the windward and exhaust sides.

[0076] The control fan blade 3 is a sealed flat plate made of engineering plastic, galvanized steel and stainless steel.

[0077] Five horizontal supports 4 are also provided between the left support 1 and the right support 2. All the fan blades 3 are installed between the upper and lower horizontal supports 4 of the corresponding layer through a rotating shaft, which is a rotatable arrangement.

[0078] like Figure 8 As shown in (b), when all the fan blades 3 of the same layer are rotated to the closed position, the sides of the adjacent airflow control modules on the left and right cooperate with each other to form a continuous, gapless barrier, realizing the complete closure of the modular ventilation unit, and can be closed or opened in layers.

[0079] Example 8: Modular ventilation unit with multi-column support frame.

[0080] like Figure 9 As shown, a modular ventilation unit that comprehensively considers the variation of ambient wind speed along elevation includes a support frame and a modular ventilation component; the modular ventilation component includes a 4-layer (M=4) ventilation guide module arranged in the vertical direction, each layer containing 2 (N1=N2=N3=N4=2) control fan blades 3.

[0081] Based on the wind speed profile function with a power exponent of 0.6, the vertical sides of the windward and exhaust sides of the control fan blade 3 are both vertical, with widths from bottom to top of W1=1400mm, W2=2500mm, W3=3300mm, and W4=4000mm, respectively.

[0082] The upper two layers of control fan blades 3 use gap-type straight plates. The anti-vortex gaps 5 on the control fan blades 3 eliminate the large vortices generated on their leeward side due to the excessive width of the control fan blades 3, thereby improving the airflow guiding and ventilation effect. The lower two layers use sealed straight plates, both made of stainless steel and galvanized steel. The offset angle is 0°.

[0083] The support frame comprises a left support 1 and a right support 2; the left support 1 and the right support 2 are in the form of multi-columns, two columns from the windward side to the air outlet side; the control fan blades 3 are fixedly installed on the multi-columns of the left support 1 and the right support 2.

[0084] The above shows and describes the basic principles, main features and advantages of the present application. It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims, and no figure reference in the claims should be regarded as limiting the claims.

[0085] Furthermore, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A modular ventilation unit that comprehensively considers the variation of ambient wind speed along elevation, comprising a support frame and modular ventilation components, characterized in that: The support frame includes a left support and a right support for fixing and supporting the modular ventilation assembly; the modular ventilation assembly includes M layers of ventilation guide modules stacked from bottom to top, where M is an integer greater than 1; the I-th layer of the ventilation guide module contains N I N are horizontally arranged airflow control modules. I I is an independently configurable integer greater than 1, where I = 1, 2, ..., M. I = 1 corresponds to the first layer of the ventilation and airflow guiding module, i.e., the bottom layer, and I = M corresponds to the Mth layer of the ventilation and airflow guiding module, i.e., the top layer. The width of the airflow guiding and control module is independently configured based on the change of ambient wind speed along the elevation, so that the overall size of the modular ventilation component adapts to the change of ambient wind speed from bottom to top, thereby improving the airflow guiding and ventilation effect of the modular ventilation unit along the elevation. The change of ambient wind speed along the elevation is determined by the distribution characteristics of wind speed changing with the height of the location. The height of the airflow guiding and control module of each layer of the ventilation and airflow guiding module can be independently configured. The airflow guiding and control module is a fan blade, and the vertical side of the fan blade on the windward side is curved, inclined, or vertical. When the vertical side of the fan blade on the windward side is curved, the curvature of the curve is based on the ambient wind speed. The elevation variation is determined to optimize the adaptability of the control fan blades to changes in ambient wind speed along the elevation; furthermore, the vertical edge of the air outlet side of the control fan blade is curved, inclined, or vertical; when the vertical edge of the windward side and / or the vertical edge of the air outlet side of the control fan blade is curved or inclined, each control fan blade itself has a structure that is wider at the top and narrower at the bottom, and the minimum width of the control fan blade located at the top is greater than or equal to the maximum width of the control fan blade located directly below it; the minimum width is the minimum horizontal width of the control fan blade in the height direction; the maximum width is the maximum horizontal width of the control fan blade in the height direction; when the vertical edge of the windward side and / or the vertical edge of the air outlet side of the control fan blade is vertical, the width of the control fan blade located at the top is greater than or equal to the width of the control fan blade located below it, so that the modular ventilation assembly forms an inverted stepped profile on the windward side and / or the air outlet side.

2. The modular ventilation unit according to claim 1, which comprehensively considers the variation of ambient wind speed along elevation, is characterized in that: The control fan blade has a structure of either a straight plate or an arc-shaped plate; a straight plate means that the projection of the control fan blade on the horizontal plane is a straight line; an arc-shaped plate means that the projection of the control fan blade on the horizontal plane is an arc; when the vertical edge of the windward side and / or the vertical edge of the air outlet side of the control fan blade is arc-shaped or inclined, the minimum width of the control fan blade is 0.4m to 4m, and the maximum width of the control fan blade is 0.5m to 4m; when the vertical edge of the windward side and / or the vertical edge of the air outlet side of the control fan blade is vertical, the width of the control fan blade is 0.5m to 4m.

3. A modular ventilation unit that comprehensively considers the variation of ambient wind speed along elevation according to claim 2, characterized in that: The control fan blade panel is either sealed or gapped; the sealed type means that the control fan blade itself has no holes; the gapped type means that the control fan blade itself has a vortex-eliminating gap near the windward side to eliminate vortices on the leeward side of the control fan blade.

4. A modular ventilation unit that comprehensively considers the variation of ambient wind speed along elevation according to claim 3, characterized in that: When M≥3, the width of the central control fan blade of the uppermost M-th layer ventilation guide module is less than or equal to the width of the central control fan blade of the (M-1)-th layer ventilation guide module, in order to ensure the operational stability of the modular ventilation components.

5. A modular ventilation unit that comprehensively considers the variation of ambient wind speed along elevation according to claim 1, characterized in that: The airflow guiding and control module of the ventilation and airflow guiding module in layer I has an angle θ with the perpendicular line connecting the projections of the left and right supports on the horizontal plane, pointing towards the side of the incoming ambient airflow. I , where 0°≤θ I ≤45°, the offset angle of the airflow control module in different layers is independently set based on the change of the ambient wind speed along the elevation, and the offset angle of the upper layer airflow control module is greater than or equal to the offset angle of the lower layer airflow control module.

6. A modular ventilation unit that comprehensively considers the variation of ambient wind speed along elevation according to claim 1, characterized in that: The left and right supports can be single or multiple columns; multiple columns refer to multiple columns arranged along the windward side to the air outlet side; when the number N of the airflow guiding and control modules in each floor's ventilation guiding module... I When =2, the airflow control module is installed on the left and right supports.

7. A modular ventilation unit that comprehensively considers the variation of ambient wind speed along elevation according to claim 6, characterized in that: Furthermore, the support frame also includes M+1 horizontal braces connecting the left and right supports; these horizontal braces are horizontally arranged and divide the space between the left and right supports into M layers; when the number of airflow guiding and control modules in each layer of the ventilation and airflow guiding module is N... I When the number of airflow control modules is N, the airflow control module is installed only between the upper and lower horizontal supports of the corresponding layer, or one is installed on the left or right support, and the other is installed between the upper and lower horizontal supports of the corresponding layer; when the number of airflow control modules in the ventilation airflow control module of each layer is N I When the value is ≥3, the airflow control module is installed simultaneously on the left support, the right support, and between the upper and lower horizontal supports of the corresponding layer, or only between the upper and lower horizontal supports of the corresponding layer.

8. A modular ventilation unit that comprehensively considers the variation of ambient wind speed along elevation according to claim 7, characterized in that: When the airflow control module is installed between the upper and lower cross braces of the corresponding layer, the airflow control module can be installed in a fixed or rotatable manner; the rotatable manner means that the airflow control module is connected to the cross brace through a rotating shaft and can rotate horizontally around the rotating shaft.

9. A modular ventilation unit that comprehensively considers the variation of ambient wind speed along elevation according to claim 3, characterized in that: The fan blades are made of one or more of conventional boards and sound-absorbing boards; the conventional boards include one or more of aluminum alloy, galvanized steel, stainless steel, fiberglass and engineering plastics; the sound-absorbing boards are porous sound-absorbing materials, including one or more of glass wool, rock wool, mineral wool, polyester fiber wool, wood fiberboard, open-cell polyurethane foam and melamine foam.

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