A louver for air intake and sealing capable of minimizing ventilation resistance when opened

Abstract

A louver for air intake and sealing that can minimize ventilation resistance when opened belongs to the field of ventilation and air conditioning technology, comprising a window frame and a vertical louver group that can minimize ventilation resistance when opened, the vertical louver group consisting of M vertical louvers with rotating shafts, M ≥ 2; the width W of the vertical louvers satisfies 0.5m ≤ W ≤ 2.6m, and the ratio F of the thickness to the width of the vertical louvers satisfies 1 / 50 ≤ F ≤ 1 / 10, and the vertical louvers with the ratio F of the thickness to the width are used to reduce the ventilation resistance of the louvers. When the window is open, the thickness of the vertical width blinds corresponds to the ventilation resistance caused by the blocked area, while maintaining its wind resistance; the vertical width blinds include an air inlet overlap area, a solid blind area and an air outlet overlap area; when there is ambient wind and the blinds are open, the vertical width blinds of width W and their air inlet overlap areas are used to guide and eliminate vortices to minimize the ventilation resistance of the blinds when the air is inclined; when the blinds are closed, the air inlet of the blinds is sealed by alternating the overlap of the air inlet and the air outlet overlap areas of adjacent blinds.

Description

Technical Field

[0001] The present invention belongs to the technical field of ventilation and air conditioning, and in particular relates to an air intake and sealing shutter capable of minimizing ventilation resistance when opened. Background Art

[0002] Venetian blinds are commonly used as ventilation devices to regulate air flow in buildings. Partially closing the blinds to reduce ventilation volume provides a better ventilation control effect. However, when fully open to maximize ventilation, narrow-width blinds, due to their larger number of blades, can reduce the total ventilation area of ​​the building's air inlet by approximately 10%, impacting overall ventilation effectiveness. Vertical-width blinds, by reducing the number of blades, reduce their impact on total ventilation area to less than 10%. Therefore, for large buildings, vertical-width blinds are suitable as ventilation devices for air flow regulation.

[0003] When the width of vertical louvers is greater than 0.5m, the wide louvers can also guide the ambient crosswind by directing the oncoming airflow when the louvers are fully opened. However, due to this directing effect on the oncoming airflow, transverse vortices are induced on the leeward side of the louvers. This results in the wide louvers improving the ventilation of the windward side flow channel while also increasing the ventilation resistance of the leeward side flow channel. Generally, the wider the vertical louvers, the greater the adverse effect on the induced resistance of the leeward side flow channel. In addition, as the ambient wind speed increases, the transverse vortices induced in the leeward side flow channel also gradually increase. In particular, when the wind speed exceeds 5m / s, the transverse vortices in the leeward side flow channel add even greater ventilation resistance. To this end, the design of vertical width louvers should be carried out in a targeted manner. While achieving ventilation adjustment for the air inlets of large buildings, it should also reduce its adverse impact on the overall ventilation area of ​​the air inlets of large buildings when the louvers are fully open, and give full play to its windward side diversion function and reduce the additional ventilation resistance of the vortex on the leeward side. Summary of the Invention

[0004] In order to solve the technical problems raised above, the present invention proposes an air intake closure shutter that can minimize the ventilation resistance when opened. The shutter is provided with a vertical width shutter group and the ratio of the thickness to the width of the vertical width shutter is limited to reduce the adverse effect of the thickness of the vertical width shutter on the effective air intake area. The vortex elimination and rectification of the air intake vortex elimination porous plate arranged at the air intake end of the vertical width shutter is used to reduce the ventilation resistance of the leeward flow channel of the vertical width shutter and improve the overall guiding effect. The sealing of the air intake closure of the shutter is met by overlapping and splicing adjacent vertical width shutters.

[0005] The specific solution of the present invention for solving the above-mentioned existing problems is: a louver for air intake and sealing that can minimize ventilation resistance when opened, comprising a window frame and a vertical width louver group that can minimize ventilation resistance when opened, characterized in that: the vertical width louver group that can minimize ventilation resistance when opened is composed of M vertical width louvers with rotating shafts, M ≥ 2; the width W of the vertical width louvers satisfies 0.5m ≤ W ≤ 2.6m, and the ratio F of the thickness to the width of the vertical width louvers satisfies 1 / 50 ≤ F ≤ 1 / 10; the vertical width louvers are adjusted by the ratio F of the thickness to the width. Wide blinds are used to reduce the ventilation resistance caused by the shielding area corresponding to the thickness of the vertical width blinds when the blinds are opened, while maintaining their wind resistance; the vertical width blinds include an air inlet overlap area, a solid blind area and an air outlet overlap area; when there is ambient wind and the blinds are open, the vertical width blinds of the width W and their air inlet overlap areas are used to guide and eliminate vortices to minimize the ventilation resistance of the vertical width blinds when the air inlet side of the blinds is tilted to intake air; when the blinds are closed, the air inlet closure of the blinds is achieved by alternating the overlap of the air inlet overlap areas and the air outlet overlap areas of adjacent vertical width blinds.

[0006] The window frame includes an upper horizontal frame and a lower horizontal frame, and may further include a left vertical frame and a right vertical frame; the rotating shaft is arranged at the upper and lower ends of the vertical width louver, and is hinged to the upper horizontal frame and the lower horizontal frame of the window frame respectively; the thickness B of the solid louver area is equal to the thickness of the vertical width louver, that is, B=W*F.

[0007] The solid louver area is a completely airtight vertical arc-shaped plate, which is arranged between the air inlet overlap area and the air outlet overlap area of ​​the vertical width louver; the vertical arc-shaped plate is a vertical solid arc-shaped plate of equal thickness or a vertical frame-surface arc-shaped plate with a flexible surface material on the outside of the frame, and its width-to-chord ratio X satisfies 0≤X≤0.15, and the width-to-chord ratio is the ratio of the height h of the solid louver area protruding toward the leeward side when the louver is open to the width Ws of the solid louver area; the air inlet overlap area is arranged at the air inlet end of the vertical width louver when the louver is open and is located on the air inlet side when the louver is closed; the air outlet overlap area is arranged at the air outlet end of the vertical width louver when the louver is open and is located on the air outlet side when the louver is closed.

[0008] When the local average annual ambient wind speed Vn is greater than 5 m / s, the air inlet overlap area is an air inlet vortex elimination porous plate; and the air outlet overlap area is an air outlet sealing overlap solid plate.

[0009] When the ambient wind speed Vs satisfies 5m / s<Vs≤12m / s, the width K1 of the air inlet vortex elimination porous plate is 0.05W*(Vs-5), and the porosity η of the air inlet vortex elimination porous plate is C*(Vs-5), where C is the correction coefficient and 0.05≤C≤0.1.

[0010] When the ambient wind speed Vs>12m / s, the width K1 of the air inlet vortex elimination porous plate takes a maximum value of 0.35W, and the porosity η of the air inlet vortex elimination porous plate takes a maximum value of 0.5.

[0011] The thickness of the air inlet vortex elimination porous plate is less than or equal to 1 / 2 of the thickness B of the solid louver area; the thickness of the air outlet sealing overlap solid plate is less than or equal to 1 / 2 of the thickness B of the solid louver area; the width K2 of the air outlet sealing overlap solid plate is equal to the width K1 of the air inlet vortex elimination porous plate; the air inlet overlap area is the center distance S1 of the rotation axis of the vertical width louver of the air inlet vortex elimination porous plate and its adjacent vertical width louver, which satisfies S1=L1+L2-K1, where L1 is the distance between the air inlet end of the air inlet vortex elimination porous plate and the rotation axis, and L2 is the distance between the air outlet end of the adjacent vertical width louver air outlet sealing overlap solid plate and the rotation axis; when the blinds are closed, the distance Z1 between the center of the rotation axis of the leftmost vertical width louver and the left vertical frame satisfies L2-0.2B≤Z1≤L2+0.2B, and the distance Y1 between the center of the rotation axis of the rightmost vertical width louver and the right vertical frame satisfies L1-0.2B≤Y1≤L1+0.2B.

[0012] When the local average annual ambient wind speed Vn≤5m / s, the air inlet overlap area is a sealing overlap strip; the air outlet overlap area is a sealing overlap strip; the sealing overlap strip is a rectangular structure, a flat plate structure, a triangular structure or an arc structure.

[0013] When the sealing overlap strip is a rectangular structure or a flat plate structure, the width of the sealing overlap strip extending along the solid louver area is less than or equal to the thickness B of the solid louver area, and the thickness of the sealing overlap strip is less than or equal to 1 / 2 of the thickness B of the solid louver area; when the sealing overlap strip is a triangular or arc-shaped structure, the overall width of the sealing overlap strip extending along the solid louver area is less than or equal to the thickness B of the solid louver area, the length of the sealing overlap strip perpendicular to the overall width direction is less than or equal to the thickness B of the solid louver area, and the overall width of the sealing overlap strip extending along the solid louver area and the length perpendicular to the overall width direction are connected by a straight line or an arc.

[0014] The air inlet overlap area is a sealing overlap strip, and the axial center distance S2 between the vertical width louver and its adjacent vertical width louver satisfies L3+L4-K3≤S2<L3+L4, wherein L3 is the distance between the air inlet end of the sealing overlap strip arranged at the air inlet end and the center of the rotating shaft, L4 is the distance between the air outlet end of the sealing overlap strip arranged at the air outlet end and the center of the rotating shaft, and K3 is the width of the sealing overlap strip extending along the physical louver area; when the blinds are closed, the distance Z2 between the center of the rotating shaft of the leftmost vertical width louver and the left vertical frame satisfies L4-0.2B≤Z2≤L4+0.2B, and the distance Y2 between the center of the rotating shaft of the rightmost vertical width louver and the right vertical frame satisfies L3-0.2B≤Y2≤L3+0.2B.

[0015] Compared with the prior art, the beneficial effects of the present invention are: an air intake and sealing shutter that can minimize the ventilation resistance when opened, comprising a window frame and vertical width shutters, wherein the width W of the vertical width shutters satisfies 0.5m≤W≤2.6m, and the ratio F of the thickness to the width of the vertical width shutters satisfies 1 / 50≤F≤1 / 10, and the vertical width shutters with the thickness-to-width ratio F are used to reduce the ventilation resistance caused by the blocking area corresponding to the thickness of the vertical width shutters when the shutters are opened, while maintaining their wind resistance. The vertical width louver includes a solid louver area, an air inlet overlap area and an air outlet overlap area, wherein the solid louver area is arranged in the middle position of the vertical width louver, and its width-to-chord ratio X satisfies 0≤X≤0.15, and the air inlet overlap area is arranged at the air inlet end of the vertical width louver when the louver is open and is located on the outside of the vertical width louver when closed; the air outlet overlap area is arranged at the air outlet end of the vertical width louver when the louver is open and is located on the inside of the vertical width louver when closed; when there is ambient wind and the louver is open, the vertical width louver of the width W and its air inlet overlap area are used to guide and eliminate vortices to minimize the ventilation resistance of the vertical width louver when the air inlet side of the louver is tilted to intake air; when the louver is closed, the air inlet of the louver is closed by alternatingly overlapping the air inlet overlap area and the air outlet overlap area of ​​adjacent vertical width louvers.

[0016] When the local average annual ambient wind speed Vn is greater than 5m / s, the air inlet overlap area is an air inlet vortex elimination porous plate, and the air outlet overlap area is an air outlet sealing overlap solid plate. The width and porosity of the air inlet vortex elimination porous plate are set according to the ambient wind speed to reduce the ventilation resistance of the leeward flow channel of the vertical width shutter when the shutter is open, thereby improving the overall diversion effect of the shutter; when the shutter is closed, the air outlet sealing overlap solid plate overlaps with the air inlet vortex elimination porous plate of the adjacent vertical width shutter to meet the air inlet closure of the shutter.

[0017] When the local average annual ambient wind speed Vn≤5m / s, the air inlet overlap area and the air outlet overlap area are both sealed overlap strips. When the shutters are opened, the sealing overlap strips at the air inlet end and the vertical width shutters are used to reduce the turning wind speed of the air inlet and eliminate vortices, so as to reduce the ventilation resistance of the leeward flow channel of the vertical width shutters when the shutters are open, and improve the overall diversion effect of the shutters; when the shutters are closed, the air inlet of the shutters is sealed by alternating overlapping of the sealing overlap strips at the air inlet end and the air outlet end of adjacent vertical width shutters.

[0018] The amplitude-chord ratio X of the solid louver area satisfies 0≤X≤0.15, which can guide the airflow entering the flow channel to the air outlet end of the louver, further improving the diversion effect of the vertical width louver on the side wind. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a structural diagram of an air intake closure shutter when opened, in which the air intake overlap area is an air intake vortex elimination porous plate and the ventilation resistance when opened can be minimized.

[0020] Figure 2The invention is a structural diagram of an air inlet closure shutter closed when the air inlet overlap area is a porous plate for eliminating air vortices, which can minimize ventilation resistance when the air inlet is opened.

[0021] Figure 3 The invention is a schematic diagram of a vertical width louver structure in which the air inlet overlap area is an air inlet vortex elimination porous plate.

[0022] Figure 4 This is a schematic diagram of the vertical width louver flow field where the air inlet overlap area is an air inlet vortex elimination porous plate.

[0023] Figure 5 It is a schematic diagram of different structural forms of sealing lap strips.

[0024] Figure 6 The present invention is a structural diagram of an air intake closed shutter when opened, in which the air intake overlap area is a sealing overlap strip and the ventilation resistance when opened can be minimized.

[0025] Figure 7 The invention is a structural diagram of an air inlet sealing shutter when closed, in which the air inlet overlap area is a sealing overlap strip and the ventilation resistance when opened can be minimized.

[0026] Figure 8 The present invention is a schematic diagram of a vertically wide louver structure in which the air inlet overlap area is a sealed overlap strip.

[0027] Figure 9 The present invention is a structural diagram of an air intake-sealed shutter when opened, in which the solid shutter area is a vertical frame-surface arc-shaped plate and the ventilation resistance when opened is minimized.

[0028] Figure 10 The schematic diagram of the vertical width louver group when the shutter is opened is a top view of an air intake closed shutter with a solid louver area consisting of a vertical frame curved plate to minimize ventilation resistance when opened.

[0029] In the figure: 1-window frame; 2-vertical width louver; 3-air outlet overlap area; 4-solid louver area; 5-air inlet overlap area; 6-rotating shaft; 7-sealing overlap strip; 101-upper horizontal frame; 102-lower horizontal frame; 103-left vertical frame; 104-right vertical frame. DETAILED DESCRIPTION

[0030] 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.

[0031] 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 modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose of the present invention. At the same time, terms such as "upper", "lower", "left", "right", "outer", "inner", etc. 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 regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0032] A venetian blind for air intake and sealing that can minimize ventilation resistance when opened, comprising a window frame 1 and a vertical louver group that can minimize ventilation resistance, characterized in that: the vertical louver group that can minimize ventilation resistance is composed of M vertical louvers 2 with rotating shafts 6, M ≥ 2; the width W of the vertical louvers 2 satisfies 0.5m ≤ W ≤ 2.6m, and the ratio F of the thickness to the width of the vertical louvers 2 satisfies 1 / 50 ≤ F ≤ 1 / 10, and the vertical width of the louvers 2 with the ratio F of the thickness to the width is reduced when the louvers are opened. The thickness of the louver 2 corresponds to the ventilation resistance caused by the blocked area while maintaining its wind resistance; the vertical width louver 2 includes an air inlet overlap area 5, a solid louver area 4 and an air outlet overlap area 3; when there is ambient wind and the venetian blinds are open, the vertical width louvers 2 of the width W and their air inlet overlap area 5 are used to guide and eliminate vortices to minimize the ventilation resistance of the vertical width louvers 2 when the air inlet side of the venetian blinds is tilted to intake air; when the venetian blinds are closed, the air inlet closure of the venetian blinds is achieved by alternating the overlap of the air inlet overlap area 5 and the air outlet overlap area 3 of adjacent vertical width louvers 2. The solid louver area 4 is a completely airtight vertical arc plate, arranged between the air inlet overlap area 5 and the air outlet overlap area 3 of the vertical width louver 2. The vertical arc plate is a vertical solid arc plate of equal thickness or a vertical frame surface arc plate with a flexible surface material on the outside of the frame, and its amplitude-chord ratio X satisfies 0≤X≤0.15; the air inlet overlap area 5 is a sealing overlap strip 7 or an air inlet vortex-eliminating porous plate, and the air outlet overlap area 3 is a sealing overlap strip 7 or an air outlet sealed overlap solid plate.

[0033] The working principle of the vertical width blinds: arrange M vertical width blinds 2 with a width of 0.5m≤W≤2.6m, and at the same time limit the ratio F of their thickness to width to meet 1 / 50≤F≤1 / 10. By adjusting the width W and the ratio F of the thickness to width, the thickness and width of the vertical width blinds are controlled to reduce the ventilation resistance caused by the thickness of the vertical width blinds 2 corresponding to the blocking area when the blinds are opened, while maintaining its wind resistance; the width-chord ratio X of the physical blind area 4 meets 0≤X≤0.15. Through the width-chord ratio of the physical blind area 4, the fluidity of the airflow in the flow channel is increased, and the airflow in the flow channel is guided to turn to the air outlet along its structural shape, thereby further improving the diversion effect of the vertical width blinds 2 on the ambient side wind.

[0034] When the local average annual ambient wind speed Vn>5m / s, the air inlet overlap area 5 is an air inlet vortex elimination porous plate, and the air outlet overlap area 3 is an air outlet sealing overlap solid plate; when the shutter is opened, such as Figure 4 As shown, the ambient side wind blows toward the blinds, and blows into the flow channel of the vertical width blinds 2 at an angle relative to the vertical width blinds 2. A part of the ambient side wind is diverted by the vertical width blinds 2 toward the wind outlet end of the blinds, and the other part enters the leeward flow channel of the vertical width blinds 2 through the air inlet vortex elimination porous plate; the airflow entering the leeward flow channel of the blinds through the air inlet vortex elimination porous plate is mixed with the airflow directly entering its leeward flow channel, and the direction of the airflow directly entering the flow channel close to the leeward side of the vertical width blinds 2 is continuously guided, and no transverse vortex is generated in the leeward flow channel of the vertical width blinds 2, and it is guided to turn toward the wind outlet end, thereby reducing the ventilation resistance of the leeward flow channel of the vertical width blinds 2 and improving the diversion effect of the vertical width blinds 2. When the shutters are closed, the air outlet sealing overlap solid plate overlaps with the air inlet vortex elimination porous plate of the adjacent vertical width shutters, and the overlapping width is equal to the width of the air inlet vortex elimination porous plate. The air outlet sealing overlap solid plate completely blocks the air inlet vortex elimination porous plate, thereby meeting the air inlet closure of the shutters.

[0035] When the local average annual ambient wind speed Vn≤5m / s, the air inlet overlap area 5 is a sealing overlap strip 7, and the air outlet overlap area 3 is also a sealing overlap strip 7. Figure 5As shown, the structure of the sealing overlap strip 7 is a rectangular structure, a flat structure, a triangular structure or an arc structure; when the shutter is opened, relying on the diversion effect formed by the solid shutter area 4 and the sealing overlap strip 7, the structural form of the sealing overlap strip 7 can reduce the turning wind speed of the incoming wind, so as to reduce the ventilation resistance of the leeward flow channel of the vertical width shutter 2; when the shutter is closed, since the adjacent air inlet overlap area 5 is the vertical width shutter 2 with the sealing overlap strip 7, the axial center distance S2 satisfies L3+L4-K3≤S2<L3+L4, wherein L3 is the distance between the air inlet end of the sealing overlap strip 7 arranged at the air inlet end and the center of the rotating shaft, L4 is the distance between the air outlet end of the sealing overlap strip 7 arranged at the air outlet end of the adjacent vertical width shutter 2 and the center of the rotating shaft, and K3 is the width of the sealing overlap strip 7 extending along the solid shutter area 4, which ensures that the sealing overlap strip 7 at the air inlet end and the sealing overlap strip 7 at the air outlet end of the adjacent vertical width shutter 2 can overlap, thereby realizing the air inlet closure of the shutter.

[0036] Example 1: An air intake closing shutter having an air intake overlap area 5 as an air intake vortex elimination porous plate that can minimize ventilation resistance when opened.

[0037] like Figures 1 to 3 As shown, a venetian blind for air intake and sealing that can minimize ventilation resistance when opened includes a window frame 1 and a vertical width louver group that can minimize ventilation resistance, and is characterized in that: the vertical width louver group that can minimize ventilation resistance consists of four vertical width louvers 2 with rotating shafts 6; the width W of the vertical width louvers 2 is 0.6m, and the ratio of the thickness to the width of the vertical width louvers 2 is F=0.05, so as to reduce the ventilation resistance caused by the thickness of the vertical width louvers 2 corresponding to the blocking area when the blind is opened; the vertical width louvers 2 include an air intake overlap area 5, a solid louver area 4 and an air outlet overlap area 3.

[0038] The window frame 1 includes an upper horizontal frame 101 and a lower horizontal frame 102, as well as a left vertical frame 103 and a right vertical frame 104; the rotating shaft 6 is arranged at the upper and lower ends of the vertical width louver 2, and is hinged to the upper horizontal frame 101 and the lower horizontal frame 102 of the window frame 1 respectively; the thickness B of the solid louver area 4 is 30 mm.

[0039] The solid louver area 4 is a completely airtight vertical arc-shaped plate, which is arranged between the air inlet overlap area 5 and the air outlet overlap area 3 of the vertical width louver 2. The vertical arc-shaped plate is a vertical solid arc-shaped plate with an aspect ratio of 0.05. The width Ws of the solid louver area 4 is 0.54m, and the height h of the solid louver area 4 protruding toward the leeward side when the louver is open is 27mm; the air inlet overlap area 5 is arranged at the air inlet end of the vertical width louver 2 when the louver is open and is located on the air inlet side of the vertical width louver 2 when it is closed; the air outlet overlap area 3 is arranged at the air outlet end of the vertical width louver 2 when the louver is open and is located on the air outlet side of the vertical width louver 2 when it is closed.

[0040] The local average annual ambient wind speed Vn is 6 m / s, the air inlet overlap area 5 is an air inlet vortex elimination porous plate; the air outlet overlap area 3 is an air outlet sealing overlap solid plate.

[0041] The ambient wind speed Vs=6m / s, the width of the inlet vortex elimination porous plate K1=30mm, and the porosity η of the inlet vortex elimination porous plate=0.1; the width of the outlet sealing overlap solid plate K2=K1=30mm, and the overlapping overlap width when closed is equal to K1=30mm.

[0042] The thickness of the air inlet vortex elimination porous plate is 15 mm, and the thickness of the air outlet sealing overlap solid plate is 15 mm.

[0043] The axis center distance between adjacent vertical width louvers 2 is S1=570mm; when the blinds are closed, the distance between the center of the rotation axis 6 of the leftmost vertical width louver 2 and the left vertical frame 103 is Z1=303mm, and the distance between the center of the rotation axis 6 of the rightmost vertical width louver 2 and the right vertical frame 104 is Y1=303mm.

[0044] Example 2: An air intake sealing shutter having an air intake overlap area formed of a sealing overlap strip, which can minimize ventilation resistance when opened.

[0045] like Figures 6 to 8 As shown, an air intake and sealing shutter capable of minimizing ventilation resistance when opened comprises a window frame 1 and a vertical width shutter group capable of minimizing ventilation resistance when opened, and is characterized in that: the vertical width shutter group capable of minimizing ventilation resistance when opened comprises four vertical width shutters 2 with rotating shafts 6; the width W of the vertical width shutters 2 is 1.2m, the ratio of the thickness to the width of the vertical width shutters 2 is F=1 / 30, and the ventilation resistance caused by the thickness of the vertical width shutters 2 corresponding to the blocking area when the shutter is opened is reduced by using the vertical width shutters with F=1 / 30; the vertical width shutters 2 comprise an air intake overlap area 5, a solid shutter area 4 and an air outlet overlap area 3.

[0046] The window frame 1 includes an upper horizontal frame 101 and a lower horizontal frame 102, as well as a left vertical frame 103 and a right vertical frame 104; the rotating shaft 6 is arranged at the upper and lower ends of the vertical width louver 2, and is hinged to the upper horizontal frame 101 and the lower horizontal frame 102 of the window frame 1 respectively; the thickness B of the solid louver area 4 is 40 mm.

[0047] The solid louver area 4 is a completely airtight vertical arc-shaped plate, which is arranged between the air inlet overlap area 5 and the air outlet overlap area 3 of the vertical width louver 2. The vertical arc-shaped plate is a vertical solid arc-shaped plate with an amplitude-to-chord ratio of 0; the air inlet overlap area 5 is arranged at the air inlet end of the vertical width louver 2 when the louver is open and is located on the air inlet side of the vertical width louver 2 when closed; the air outlet overlap area 3 is arranged at the air outlet end of the vertical width louver 2 when the louver is open and is located on the air outlet side of the vertical width louver 2 when closed.

[0048] The local average annual environmental wind speed Vn=4.5m / s≤5m / s, the air inlet overlap area 5 is a sealing overlap strip 7; the air outlet overlap area 3 is a sealing overlap strip 7.

[0049] The sealing overlap strip 7 is a rectangular structure with a width K3 of 20 mm and a thickness of 20 mm.

[0050] The axis center distance between adjacent vertical width louvers 2 is S2=1.18m. When the shutters are closed, the distance Z2=0.595m between the center of the leftmost vertical width louver shaft 6 and the left vertical frame 103, and the distance Y2=0.595m between the center of the rightmost vertical width louver shaft 6 and the right vertical frame 104.

[0051] Example 3: A louver for air intake sealing that can minimize ventilation resistance when opened.

[0052] like Figures 1 to 3 As shown, an air intake and sealing shutter that can minimize ventilation resistance when opened includes a window frame 1 and a vertical width shutter group that can minimize ventilation resistance, and is characterized in that: the vertical width shutter group that can minimize ventilation resistance consists of 4 vertical width shutters 2 with rotating shafts 6; the width W of the vertical width shutters 2 is 2.5m, and the ratio of the thickness to the width of the vertical width shutters 2 is F=0.1. The vertical width shutters 2 with F=0.1 are used to reduce the ventilation resistance caused by the thickness of the vertical width shutters 2 corresponding to the blocking area when the shutter is opened; the vertical width shutters 2 include an air intake overlap area 5, a solid shutter area 4 and an air outlet overlap area 3.

[0053] The window frame 1 includes an upper horizontal frame 101 and a lower horizontal frame 102, as well as a left vertical frame 103 and a right vertical frame 104; the rotating shaft 6 is arranged in the middle position between the upper and lower ends of the vertical width louver 2, and is hinged to the upper horizontal frame 101 and the lower horizontal frame 102 of the window frame 1 respectively; the thickness B of the solid louver area 4 is 250 mm.

[0054] The solid louver area 4 is a completely airtight vertical arc-shaped plate, which is arranged between the air inlet overlap area 5 and the air outlet overlap area 3 of the vertical width louver 2. The vertical arc-shaped plate is a vertical solid arc-shaped plate with an aspect ratio of 0.1. The width Ws of the solid louver area 4 is 0.75m, and the height h of the solid louver area 4 protruding toward the leeward side when the louver is open is 75mm; the air inlet overlap area 5 is arranged at the air inlet end of the vertical width louver 2 when the louver is open and is located on the air inlet side of the vertical width louver 2 when it is closed; the air outlet overlap area 3 is arranged at the air outlet end of the vertical width louver 2 when the louver is open and is located on the air outlet side of the vertical width louver 2 when it is closed.

[0055] The local average annual ambient wind speed Vn is 5.2 m / s. The air inlet overlap area 5 is an air inlet vortex elimination porous plate; the air outlet overlap area 3 is an air outlet sealing overlap solid plate.

[0056] When the ambient wind speed Vs=13m / s>12m / s, the width of the inlet vortex elimination porous plate is K1=0.35W=0.875m, the porosity η=0.5, the width of the outlet sealing overlap solid plate is K2=K1=0.875m, and the overlapping width when closed is equal to K1=0.875m.

[0057] The thickness of the air inlet vortex elimination porous plate is 125 mm, and the thickness of the air outlet sealing overlap solid plate is 125 mm.

[0058] The spacing between adjacent vertical louvers 2 is S=1.625m; when the shutters are closed, the distance Z1=1.24m between the center of the leftmost vertical louver shaft 6 and the left vertical frame 103, and the distance Y1=1.24m between the center of the rightmost vertical louver shaft 2 and the right vertical frame 104.

[0059] Example 4: A shutter whose solid louver area is a vertical frame arc plate and the air inlet overlap area is a sealing overlap strip.

[0060] like Figure 9 、 Figure 10 As shown, an air intake and sealing shutter capable of minimizing ventilation resistance when opened comprises a window frame 1 and a vertical width shutter group capable of minimizing ventilation resistance when opened, and is characterized in that: the vertical width shutter group capable of minimizing ventilation resistance when opened comprises four vertical width shutters 2 with rotating shafts 6; the width W of the vertical width shutters 2 is 1.5m, the ratio of the thickness to the width of the vertical width shutters 2 is F=1 / 50, and the ventilation resistance caused by the thickness of the vertical width shutters 2 corresponding to the blocking area when the shutter is opened is reduced by using the vertical width shutters with F=1 / 50; the vertical width shutters 2 comprise an air intake overlap area 5, a solid shutter area 4 and an air outlet overlap area 3.

[0061] The window frame 1 includes an upper horizontal frame 101 and a lower horizontal frame 102, as well as a left vertical frame 103 and a right vertical frame 104; the rotating shaft 6 is arranged at the upper and lower ends of the vertical width louver 2, and is hinged to the upper horizontal frame 101 and the lower horizontal frame 102 of the window frame 1 respectively; the thickness B of the solid louver area 4 is 30 mm.

[0062] The solid louver area 4 is a completely airtight vertical arc-shaped plate, which is arranged between the air inlet overlap area 5 and the air outlet overlap area 3 of the vertical width louver 2. The vertical arc-shaped plate is a vertical frame-surface arc-shaped plate with a flexible surface material on the outside of the frame, and its aspect ratio is 0.15. The width of the solid louver area 4 is Ws=1.44m, and the height of the solid louver area 4 protruding toward the leeward side when the louver is open is h=216mm; the air inlet overlap area 5 is arranged at the air inlet end of the vertical width louver 2 when the louver is open and is located on the air inlet side of the vertical width louver 2 when it is closed; the air outlet overlap area 3 is arranged at the air outlet end of the vertical width louver 2 when the louver is open and is located on the air outlet side of the vertical width louver 2 when it is closed.

[0063] The local average annual environmental wind speed Vn=4m / s≤5m / s, the air inlet overlap area 5 is a sealing overlap strip 7; the air outlet overlap area 3 is a sealing overlap strip 7.

[0064] The sealing overlap strip 7 is a rectangular structure with a width K3 of 30 mm and a thickness of 15 mm.

[0065] The axis center distance S2 of adjacent vertical width louvers 2 is 1.48m. When the shutters are closed, the distance Z2 between the center of the rotating shaft 6 of the leftmost vertical width louver 2 and the left vertical frame 103 is 0.755m, and the distance Y2 between the center of the rotating shaft 6 of the rightmost vertical width louver 2 and the right vertical frame 104 is 0.755m.

[0066] 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.

[0067] 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 louver for air intake and sealing capable of minimizing ventilation resistance when opened, comprising a window frame and a vertically wide louver assembly capable of minimizing ventilation resistance when opened, characterized in that: The vertical louver group capable of minimizing ventilation resistance when opened comprises M vertical louvers with rotating shafts, where M ≥ 2; the width W of the vertical louvers satisfies 0.5 m ≤ W ≤ 2.6 m, and the ratio F of the thickness to the width of the vertical louvers satisfies 1 / 50 ≤ F ≤ 1 / 10; the vertical louvers having the thickness-to-width ratio F are used to reduce ventilation resistance caused by the thickness of the vertical louvers corresponding to the shielding area when the shutter is opened, while maintaining its wind resistance; The vertical width louver includes an air inlet overlap area, a solid louver area and an air outlet overlap area; the solid louver area is a completely airtight vertical arc-shaped plate, arranged between the air inlet overlap area and the air outlet overlap area; the air inlet overlap area is arranged at the air inlet end of the vertical width louver when the louver is open and is located on the air inlet side when the louver is closed; the air outlet overlap area is arranged at the air outlet end of the vertical width louver when the louver is open and is located on the air outlet side when the louver is closed; when there is ambient wind and the louver is open, the vertical width louver of width W and its air inlet overlap area are used to guide and eliminate vortices, so as to minimize the ventilation resistance of the vertical width louver when the air inlet side of the louver is tilted to enter the air; when the louver is closed, the air inlet closure of the louver is achieved by alternating overlap of the air inlet overlap area and the air outlet overlap area of ​​adjacent vertical width louvers.

2. The air intake and sealing shutter capable of minimizing ventilation resistance when opened according to claim 1, characterized in that: The window frame includes an upper horizontal frame and a lower horizontal frame, and may further include a left vertical frame and a right vertical frame; the rotating shaft is arranged at the upper and lower ends of the vertical width louver, and is hinged to the upper horizontal frame and the lower horizontal frame of the window frame respectively; the thickness B of the solid louver area is equal to the thickness of the vertical width louver, that is, B=W*F.

3. The air intake and sealing shutter capable of minimizing ventilation resistance when opened according to claim 1, characterized in that: The vertical curved plate is a vertical solid curved plate of equal thickness or a vertical frame-surface curved plate with a flexible surface material on the outside of the frame, and its aspect ratio X satisfies 0≤X≤0.

15. The aspect ratio is the ratio of the height h of the solid louver area protruding toward the leeward side when the louver is opened to the width Ws of the solid louver area.

4. The air intake and sealing shutter capable of minimizing ventilation resistance when opened according to claim 1, characterized in that: When the local average annual ambient wind speed Vn is greater than 5 m / s, the air inlet overlap area is an air inlet vortex elimination porous plate; and the air outlet overlap area is an air outlet sealing overlap solid plate.

5. The air intake and sealing shutter capable of minimizing ventilation resistance when opened according to claim 4, characterized in that: When the ambient wind speed Vs satisfies 5m / s<Vs≤12m / s, the width of the inlet vortex elimination porous plate K1=0.05W*(Vs-5), and the porosity of the inlet vortex elimination porous plate η =C*(Vs-5), where C is the correction factor and 0.05≤C≤0.

1.

6. The air intake and sealing shutter capable of minimizing ventilation resistance when opened according to claim 5, characterized in that: When the ambient wind speed Vs>12m / s, the width K1 of the air inlet vortex elimination porous plate takes the maximum value of 0.35W, and the porosity of the air inlet vortex elimination porous plate is η Take the maximum value 0.

5.

7. The air intake and sealing shutter capable of minimizing ventilation resistance when opened according to claim 6, characterized in that: The thickness of the air inlet vortex elimination porous plate is less than or equal to 1 / 2 of the thickness B of the solid louver area; the thickness of the air outlet sealing overlap solid plate is less than or equal to 1 / 2 of the thickness B of the solid louver area; the width K2 of the air outlet sealing overlap solid plate is equal to the width K1 of the air inlet vortex elimination porous plate; the air inlet overlap area is the center distance S1 of the rotation axis of the vertical width louver of the air inlet vortex elimination porous plate and its adjacent vertical width louver, which satisfies S1=L1+L2-K1, where L1 is the distance between the air inlet end of the air inlet vortex elimination porous plate and the rotation axis, and L2 is the distance between the air outlet end of the adjacent vertical width louver air outlet sealing overlap solid plate and the rotation axis; when the blinds are closed, the distance Z1 between the center of the rotation axis of the leftmost vertical width louver and the left vertical frame satisfies L2-0.2B≤Z1≤L2+0.2B, and the distance Y1 between the center of the rotation axis of the rightmost vertical width louver and the right vertical frame satisfies L1-0.2B≤Y1≤L1+0.2B.

8. The air intake and sealing shutter capable of minimizing ventilation resistance when opened according to claim 1, characterized in that: When the local average annual ambient wind speed Vn≤5m / s, the air inlet overlap area is a sealing overlap strip; the air outlet overlap area is a sealing overlap strip; the sealing overlap strip is a rectangular structure, a flat plate structure, a triangular structure or an arc structure.

9. The air intake and sealing shutter capable of minimizing ventilation resistance when opened according to claim 8, characterized in that: When the sealing overlap strip is a rectangular structure or a flat plate structure, the width of the sealing overlap strip extending along the solid louver area is less than or equal to the thickness B of the solid louver area, and the thickness of the sealing overlap strip is less than or equal to 1 / 2 of the thickness B of the solid louver area; when the sealing overlap strip is a triangular or arc-shaped structure, the overall width of the sealing overlap strip extending along the solid louver area is less than or equal to the thickness B of the solid louver area, the length of the sealing overlap strip perpendicular to the overall width direction is less than or equal to the thickness B of the solid louver area, and the overall width of the sealing overlap strip extending along the solid louver area and the length perpendicular to the overall width direction are connected by a straight line or an arc.

10. The air intake and sealing shutter capable of minimizing ventilation resistance when opened according to claim 9, characterized in that: The air inlet overlap area is a sealing overlap strip, and the distance S2 between the center of the rotation axis of the vertical width louver and its adjacent vertical width louver satisfies L3+L4-K3≤S2<L3+L4, wherein L3 is the distance between the air inlet end of the sealing overlap strip arranged at the air inlet end and the center of the rotation axis, L4 is the distance between the air outlet end of the sealing overlap strip arranged at the air outlet end and the center of the rotation axis, and K3 is the width of the sealing overlap strip extending along the physical louver area; when the blinds are closed, the distance Z2 between the center of the rotation axis of the leftmost vertical width louver and the left vertical frame satisfies L4-0.2B≤Z2≤L4+0.2B, and the distance Y2 between the center of the rotation axis of the rightmost vertical width louver and the right vertical frame satisfies L3-0.2B≤Y2≤L3+0.2B.

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