Ventilation adjusting unit coupling large fan blade outer flow guide and small fan blade inner flow rectification

Abstract

The invention discloses a ventilation adjusting unit coupling large fan blade external flow guide and small fan blade internal rectification, belongs to the technical field of ventilation and air conditioning, and aims to overcome the defect that the function of a traditional single-size large fan blade ventilation structure is limited to flow guide and no channel is used for further rectification. The ventilation adjusting unit comprises a supporting frame and an adjusting fan blade set, the fan blade set is formed by arranging two wide-width large flow guide fan blades and a plurality of narrow-width small rectification fan blades, and the small rectification fan blades are arranged between the two large flow guide fan blades. Ambient air is guided into the ventilation adjusting channel formed by the two large flow guide fan blades through the large flow guide fan blades, then air entering the channel is rectified through the M small rectification fan blades, external flow guide and internal rectification between the ventilation adjusting units are achieved through coupling, and the uniformity of an air flow field in the ventilation adjusting channel is improved. The ventilation adjusting unit is further additionally provided with a vibration suppression assembly and / or a vertical support, so that the structural rigidity is enhanced, the vibration of the fan blades is suppressed, and the stability and durability of the fan blades under complex airflow are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ventilation and air conditioning, and particularly relates to a ventilation and air conditioning unit coupling large-leaf external flow guiding and small-leaf internal rectification. BACKGROUND

[0002] In various building ventilation and air conditioning systems, how to effectively organize air flow, reduce ventilation resistance and improve air flow efficiency has always been a key technical problem of industry concern. Currently, common ventilation openings usually adopt flow guide grilles or louvers. These devices are generally formed by a series of blades with basically the same size, shape and spacing arranged in parallel, and the size of the ventilation air flow is changed through the opening and closing of the blades.

[0003] Chinese patent application CN 213455014 U discloses an automatic control intelligent wind shield anti-freezing device for cooling tower. In order to solve the problem that manual control of suspension adjustment is not timely, causing serious ice hanging phenomenon of the cooling tower, leading to serious freeze-thaw of the cooling tower, and causing the cooling tower to be unable to operate normally and safely and effectively control the cooling water temperature, a wind speed sensor and a temperature sensor are arranged, the angle of the wind shield is automatically opened or closed or adjusted according to the monitored site conditions, and the display is realized through the man-machine exchange interface, so that the problem of manual control of suspension adjustment not being timely and causing serious ice hanging phenomenon of the cooling tower is avoided. The patent is designed for anti-freezing wind shield, and the function direction mainly focuses on realizing winter anti-freezing protection through opening and closing and angle adjustment of the wind shield, but does not involve active flow guiding and rectification optimization of air.

[0004] Chinese patent application CN 120401939 A discloses an air inlet closing louver capable of minimizing ventilation resistance when opened. The vertical wide louver with a thickness-width ratio F is used to reduce the ventilation resistance caused by the thickness of the vertical wide louver corresponding to the shielding area when the louver is opened, while maintaining the wind resistance strength. When there is environmental wind and the louver is opened, the vertical wide louver with a width W and the air inlet overlapping area thereof are used for flow guiding and vortex elimination to minimize the ventilation resistance of the louver when the air inlet is inclined. When the louver is closed, the air inlet of the louver is closed by the alternating overlapping of the air inlet overlapping area and the air outlet overlapping area of adjacent louvers. In the description of the working principle, it is described that no transverse vortex is generated in the flow channel on the leeward surface of the vertical wide louver, the flow direction is guided to the air outlet end, and thus the ventilation resistance of the flow channel on the leeward surface of the vertical wide louver is reduced and the flow guiding effect of the vertical wide louver is improved. The patent focuses on realizing flow guiding and vortex elimination and resistance reduction on the leeward surface of the blade by optimizing the shape of the vertical wide louver, but the function does not involve further rectification and uniformization control of the air flow field in the ventilation flow channel formed between two adjacent vertical wide louvers.

[0005] However, in practical applications, especially in natural ventilation or complex environmental conditions, such traditional structures have obvious technical defects: first, when the ambient air enters the ventilation opening at a large angle or in a turbulent state, the single size large flow guide fan blade is limited to air flow guiding and does not have the ability to straighten the air flow in the channel between the two adjacent large flow guide fan blades, resulting in uneven distribution of the inlet air flow along the cross section of the air channel between the adjacent blades, further affecting the downstream air flow field, and even inducing secondary vortexes in the downstream to add ventilation resistance, thereby affecting the ventilation effect; second, increasing the blade density or size to improve the flow guiding effect will further increase the air flow resistance, and using sparse layout to reduce the resistance will lead to poor flow guiding effect, which seriously restricts the improvement of ventilation efficiency.

[0006] Therefore, the existing ventilation regulation structure has obvious deficiencies in aerodynamic performance and energy efficiency, and a new ventilation regulation scheme is needed, which can realize efficient flow guiding and full straightening of complex incoming flow under the premise of low flow resistance, thereby significantly improving the overall performance of the ventilation system. SUMMARY

[0007] To solve the above-mentioned technical problems, the present application provides a ventilation regulation unit coupling large fan blade external flow guiding and small fan blade internal straightening, which can cover the flow guiding effect of ambient air and involve the straightening effect, in the form of combination of large flow guide fan blades and small straightening fan blades, to ensure the ventilation and air regulation effect, meet the low flow resistance, and thus improve the overall ventilation regulation performance.

[0008] The specific scheme for solving the above-mentioned existing problems is: a ventilation regulation unit coupling large fan blade external flow guiding and small fan blade internal straightening, comprising a support frame and a regulation fan blade group, characterized in that: the support frame is composed of an upper cross brace and a lower cross brace; the regulation fan blade group comprises two large flow guide fan blades and M small straightening fan blades, wherein 0≤M≤50; the small straightening fan blades are arranged between the two large flow guide fan blades; the ambient air is guided by the large flow guide fan blades into the ventilation regulation channel formed by the two large flow guide fan blades, and then the air entering the ventilation regulation channel is straightened by the M small straightening fan blades, thereby improving the uniformity of the air flow field in the ventilation regulation channel, reducing the ventilation resistance, and further enhancing the ventilation efficiency.

[0009] The large flow guide fan blade structure is a flat plate type or an arc shape structure; the width of the large flow guide fan blade is Wd, satisfying 0.5m≤Wd≤3m.

[0010] The small straightening fan blade is a flat plate type or an arc shape structure; the width of the small straightening fan blade is Wz, satisfying 0.2m≤Wz≤0.5Wd.

[0011] When the number of the small rectifying blades M>1, the distance between adjacent small rectifying blades is Kz=Wz-D, wherein D is the overlapping degree of the end of the adjacent blades, and the value range of D is -0.08m~0.08m; when D>0, the end of the adjacent blades is overlapped; when D<0, the end of the adjacent blades is not overlapped and has a certain gap; when D=0, the end of the adjacent blades just contacts, neither overlapped nor having a gap.

[0012] When the number of the small rectifying blades M>0, the distance between the large flow guiding blade and the adjacent small rectifying blade is Ki=0.5Wz+0.5Wd-D.

[0013] When the number of the small rectifying blades M=0, the distance between the two large flow guiding blades is Kd=Wd-D; when the number of the small rectifying blades M=1, the distance between the two large flow guiding blades is Kd=Ki*2; when the number of the small rectifying blades M>1, the distance between the two large flow guiding blades is Kd=Ki*2+Kz*(M-1).

[0014] The installation angle of the large flow guiding blade and the small rectifying blade is adjustable to adapt to different incoming flow directions.

[0015] The material of the support frame is one or more of carbon steel, galvanized steel, stainless steel and glass steel; the adjusting blade group is made of one or more of aluminum alloy, engineering plastic, glass steel, galvanized steel and stainless steel.

[0016] The ventilation adjusting unit further comprises a vibration suppression assembly; the vibration suppression assembly is one or more of a flow guiding vibration suppression connecting rod, a rectifying vibration suppression connecting rod, a whole vibration suppression connecting rod and a local vibration suppression connecting rod; the flow guiding vibration suppression connecting rod is used for connecting two large flow guiding blades; the rectifying vibration suppression connecting rod is used for connecting M small rectifying blades; the whole vibration suppression connecting rod is used for connecting 2 large flow guiding blades and M small rectifying blades; the vibration suppression assembly and the blade are movably connected; the local vibration suppression connecting rod is used for connecting 1 large flow guiding blade and N small rectifying blades adjacent to the large flow guiding blade, wherein the value range of N is 1~5.

[0017] The support frame further comprises a vertical support arranged at one or more of the following positions: between the left large flow guiding blade and the leftmost small rectifying blade, between the right large flow guiding blade and the rightmost small rectifying blade, the left side of the left large flow guiding blade, the right side of the right large flow guiding blade and between the small rectifying blades.

[0018] Compared with the prior art, the beneficial effects of the present application are: by adopting the coupling design of "large fan leaf outer flow guide + small fan leaf inner rectification", the deficiency that the function of single size large fan leaf ventilation structure is limited to flow guide and lacks further rectification is effectively solved. The large flow guide fan leaf can efficiently converge and preliminarily guide the complex incoming flow, and the small rectification fan leaf arranged in the channel thereof can finely rectify the airflow, thereby suppressing the generation of vortex and flow separation, so that the efficient organization and rectification of the complex incident airflow are realized under the premise of low ventilation resistance. The synergistic effect greatly improves the ventilation efficiency and airflow quality, and creates more favorable flow field conditions for the subsequent process, and the overall aerodynamic performance and energy efficiency are significantly better than those of the traditional grating or louver structure. Further, the vibration suppression assembly can effectively reduce the vibration of the ventilation regulating unit caused by wind, and improve the safety and stability of the ventilation regulating unit. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic view of a ventilation regulating unit coupling large fan leaf outer flow guide and small fan leaf inner rectification.

[0020] Figure 2 It is a schematic view of the structure and flow field of a ventilation regulating unit without small rectification fan leaf and arranged with flow guide vibration suppression link.

[0021] Figure 3 It is a schematic view of the structure and flow field of a ventilation regulating unit arranged with one small rectification fan leaf.

[0022] Figure 4 It is a top view schematic view of a ventilation regulating unit structure arranged with arc-shaped structure and rectification vibration suppression link.

[0023] Figure 5 It is a top view schematic view of a ventilation regulating unit structure arranged with overall vibration suppression link.

[0024] Figure 6 It is a schematic view of a ventilation regulating unit structure arranged with two vertical supports.

[0025] Figure 7 It is a schematic view of a ventilation regulating unit structure arranged with one vertical support and local vibration suppression link.

[0026] Figure 8 It is a schematic view of a ventilation regulating unit structure arranged with two vertical supports and flow guide vibration suppression link.

[0027] Figure 9 It is a schematic view of different situations of the overlapping degree D of adjacent fan leaf ends.

[0028] In the figure: 1-large flow guide fan leaf, 2-small rectification fan leaf, 3-upper cross support, 4-lower cross support, 5-flow guide vibration suppression link, 6-rectification vibration suppression link, 7-overall vibration suppression link, 8-local vibration suppression link, 9-vertical support.

[0029] Figure 9 Fig. 1 shows the schematic diagram of the case when the end overlap D of two adjacent large flow fan blades is greater than 0; Fig. 2 shows the schematic diagram of the case when the end overlap D of the large flow fan blade and the adjacent small rectification fan blade is greater than 0; Fig. 3 shows the schematic diagram of the case when the end overlap D of two adjacent small rectification fan blades is greater than 0; Fig. 4 shows the schematic diagram of the case when the end overlap D of two adjacent large flow fan blades is less than 0; Fig. 5 shows the schematic diagram of the case when the end overlap D of the large flow fan blade and the adjacent small rectification fan blade is less than 0; and Fig. 6 shows the schematic diagram of the case when the end overlap D of two adjacent small rectification fan blades is less than 0. DETAILED DESCRIPTION

[0030] The present application will be described in detail below with reference to the specific embodiments shown in the drawings. However, these embodiments do not limit the present application, and the changes in structure, method or function made by those skilled in the art based on these embodiments are all included in the protection scope of the present application.

[0031] The structures, proportions, sizes, etc. shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not define the limiting conditions for the implementation of the present application, and therefore do not have technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that can be produced by the present application and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "outside", "top", "left", "right" and the like used in the specification are only for the convenience of clear description, and are not used to limit the scope of the implementation of the present application. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the implementation scope of the present application.

[0032] The application provides a ventilation adjusting unit coupled with large-leaf outer air guiding and small-leaf inner air rectifying, comprising a supporting frame and an adjusting leaf group, and is characterized in that: the supporting frame is composed of an upper cross support 3 and a lower cross support 4; the adjusting leaf group comprises two large air guiding leaves 1 and M small air rectifying leaves 2, wherein 0≤M≤50; the two large air guiding leaves 1 and the M small air rectifying leaves 2 of the adjusting leaf group are arranged between the upper cross support 3 and the lower cross support 4 through a rotating shaft; the small air rectifying leaves 2 are arranged between the two large air guiding leaves 1; the ambient air is guided into the ventilation adjusting channel formed by the two large air guiding leaves 1 through the large air guiding leaves 1, and then the air entering the ventilation adjusting channel is rectified through the M small air rectifying leaves 2, so as to improve the uniformity of the air flow field in the ventilation adjusting channel, reduce the ventilation resistance, and further enhance the ventilation efficiency. Further, the ventilation adjusting unit can further comprise a vibration suppression assembly, the vibration suppression assembly comprises one or more of an air guiding vibration suppression connecting rod 5, an air rectifying vibration suppression connecting rod 6, an overall vibration suppression connecting rod 7 and a local vibration suppression connecting rod 8, the vibration suppression assembly suppresses the vibration of the leaves under strong wind, and improves the safety and stability of the ventilation adjusting unit; the supporting frame further comprises a vertical support 9 arranged at one or more of the following positions: between the left large air guiding leaf 1 and the leftmost small air rectifying leaf 2, between the right large air guiding leaf 1 and the rightmost small air rectifying leaf 2, the left side of the left large air guiding leaf 1, the right side of the right large air guiding leaf 1 and between the small air rectifying leaves 2.

[0033] As shown in Figure 2 When the small air rectifying leaves are not arranged, the ambient air enters the ventilation opening in a large incident angle or a turbulent flow state, the air flow is guided by the large air guiding leaves 1, and vortexes are formed on the leeward side of the large air guiding leaves 1, which affects the uniformity of the subsequent flow field, reduces the flow velocity of the leeward side of the left large air guiding leaf 1, and forms a distribution in which the flow velocity gradually decreases from the windward side of the right large air guiding leaf 1 to the leeward side of the left large air guiding leaf 1 at the air outlet side of the ventilation adjusting channel, thereby causing uneven distribution of the overall flow field.

[0034] The working principle of the ventilation adjusting unit is as follows: Figure 3As shown, when the ambient air enters the vent at a large incident angle or in a turbulent state, the airflow is first guided by the large wide guide fan blade 1, which guides and converges the airflow into the ventilation adjustment channel formed by the two large guide fan blades 1. At the critical stage when the airflow tends to form a vortex or flow separation, the M small rectifier fan blades 2 uniformly arranged in the ventilation adjustment channel play a further rectification role. Through the interval arrangement, the airflow is subdivided and constrained, effectively inhibiting the development of turbulence and reducing flow resistance, so that the airflow tends to be smooth. At the same time, the airflow on the windward and leeward surfaces of the small rectifier fan blade 2 converges after leaving the outflow side trailing edge of the small rectifier fan blade 2, so that the wind speed of the airflow on the leeward surface of the small rectifier fan blade 2 is increased, further optimizing the uniformity of the outflow side of the ventilation adjustment channel, and finally flowing out in a direction close to perpendicular to the inlet. The airflow velocity distribution is more uniform at the outlet of the ventilation adjustment channel. This process significantly improves the overall ventilation efficiency and aerodynamic performance.

[0035] Further, it further comprises a vibration suppression assembly connected to the plurality of fan blades, wherein the vibration suppression connecting rod is movably connected to the fan blades, forming a multi-force point rod member that disperses the stress on the individual fan blades and provides a certain constraint to each fan blade, thereby reducing the vibration caused by the incoming air and improving the safety and stability of the ventilation adjustment unit. The arrangement of the vertical support 9 can further enhance the overall stability.

[0036] Embodiment 1: Ventilation adjustment unit without vibration suppression assembly.

[0037] As shown in Figure 1 , a ventilation adjustment unit that couples the outer flow guiding of large fan blades and the inner rectification of small fan blades, comprising a support frame and an adjustment fan blade group; the support frame comprises an upper cross brace 3 and a lower cross brace 4; the adjustment fan blade group comprises two large guide fan blades 1 and four small rectifier fan blades 2; the small rectifier fan blades 2 are arranged between the two large guide fan blades 1.

[0038] The large guide fan blade 1 is a flat plate structure made of stainless steel and engineering plastic, with a width Wd=1.0m; the small rectifier fan blade 2 is a flat plate structure made of stainless steel and engineering plastic, with a width Wz=0.5m.

[0039] When the overlapping degree D=0m at the end of adjacent fan blades (as shown in Figure 9 , the overlapping degree of the large guide fan blade 1 and the adjacent small rectifier fan blade 2, and the overlapping degree of adjacent small rectifier fan blades 2 are all 0m), the spacing Kz between small rectifier fan blades 2 is 0.5m; the spacing Ki between the large guide fan blade 1 and the adjacent small rectifier fan blade 2 is 0.75m; the spacing Kd between large guide fan blades 1 is 3m.

[0040] The large guide fan blade 1 and the small rectifier fan blade 2 can be adjusted and rotated by the additional control execution mechanism, and different angles can be adjusted according to the environmental wind speed and direction.

[0041] Example 2: Ventilation regulating unit without small rectifying blades and arranged with flow guiding and vibration suppressing connecting rod.

[0042] As shown in Figure 2 , a ventilation regulating unit coupling large blade outer flow guiding and small blade inner rectifying, comprising a support frame and a regulating blade group; the support frame comprises an upper cross support 3 and a lower cross support 4; the regulating blade group comprises two large flow guiding blades 1; further comprising a flow guiding and vibration suppressing connecting rod 5.

[0043] The large flow guiding blade 1 is a flat plate structure made of galvanized steel, with a width Wd=2.0m.

[0044] When the overlapping degree D of the adjacent blade ends is 0.08m (as shown in Figure 9 , this embodiment has no small rectifying blades, and the overlapping degree between adjacent large flow guiding blades 1 is 0.08m), the spacing Kd of the large flow guiding blades 1 is 1.92m.

[0045] The large flow guiding blade 1 can be adjusted and rotated by the additional regulating and executing mechanism, and different angles can be adjusted according to the environmental wind speed and direction.

[0046] The flow guiding and vibration suppressing connecting rod 5 connects two large flow guiding blades 1, and is composed of two connecting rods and one vibration suppressing rod, wherein one end of the connecting rod is fixedly connected with the large flow guiding blade 1, and the other end is hingedly connected with the vibration suppressing rod; it is installed on the outer side of the blade.

[0047] Example 3: Ventilation regulating unit with arc-shaped plate structure arranged with rectifying and vibration suppressing connecting rod.

[0048] As shown in Figure 4 , a ventilation regulating unit coupling large blade outer flow guiding and small blade inner rectifying, comprising a support frame and a regulating blade group; the support frame comprises an upper cross support 3 and a lower cross support 4; the regulating blade group comprises two large flow guiding blades 1 and 50 small rectifying blades 2; the small rectifying blades 2 are arranged between the two large flow guiding blades 1; further comprising a rectifying and vibration suppressing connecting rod 6.

[0049] The large flow guiding blade 1 is an arc-shaped structure made of galvanized steel, with a width Wd=3.0m; the small rectifying blade 2 is a flat plate structure made of aluminum alloy, with a width Wz=0.2m.

[0050] When the overlapping degree D of the adjacent blade ends is 0.02m (as shown in Figure 9 , the overlapping degree of the large flow guiding blade 1 and the small rectifying blade 2 adjacent thereto, and the overlapping degree of the adjacent small rectifying blades 2 are all 0.02m), the spacing Kz of the small rectifying blades 2 is 0.18m; the spacing Ki of the large flow guiding blade 1 and the adjacent small rectifying blade 2 is 1.58m; the spacing Kd of the large flow guiding blades 1 is 11.98m.

[0051] The large guide fan blades 1 and the small rectifying fan blades 2 can be adjusted in rotation by the additional control execution mechanism, and different angles can be adjusted according to the wind speed and direction of the environment.

[0052] The rectifying and vibration-suppressing connecting rod 6 is connected with the 50 small rectifying fan blades 2, and is composed of 50 connecting rods and one vibration-suppressing rod. One end of the connecting rod is fixedly connected with the small rectifying fan blade 2, and the other end is hingedly connected with the vibration-suppressing rod and is installed on the outer side of the fan blade.

[0053] Embodiment 4: Ventilation adjusting unit with integral vibration-suppressing connecting rod.

[0054] As shown in Figure 5 , a ventilation adjusting unit coupling the outer guide of large fan blades and the inner rectification of small fan blades comprises a support frame and an adjusting fan blade group; the support frame comprises an upper cross support 3 and a lower cross support 4; the adjusting fan blade group comprises two large guide fan blades 1 and three small rectifying fan blades 2; the small rectifying fan blades 2 are arranged between the two large guide fan blades 1, and further comprise an integral vibration-suppressing connecting rod 7.

[0055] The large guide fan blade 1 is a flat plate structure made of glass fiber reinforced plastic, and the width Wd is 0.5 m; the small rectifying fan blade 2 is a flat plate structure made of engineering plastic, and the width Wz is 0.25 m.

[0056] When the overlapping degree D of the end portions of adjacent fan blades is -0.08 m (as shown in Figure 9 , the overlapping degrees of the large guide fan blade 1 and the adjacent small rectifying fan blade 2 and the adjacent small rectifying fan blades 2 are all -0.08 m), the spacing Kz between the small rectifying fan blades 2 is 0.33 m; the spacing Ki between the large guide fan blade 1 and the adjacent small rectifying fan blade 2 is 0.455 m; and the spacing Kd between the large guide fan blades 1 is 1.57 m.

[0057] The large guide fan blades 1 and the small rectifying fan blades 2 can be adjusted in rotation by the additional control execution mechanism, and different angles can be adjusted according to the wind speed and direction of the environment.

[0058] The integral vibration-suppressing connecting rod 7 is connected with the two large guide fan blades 1 and the three small rectifying fan blades 2, and is composed of 5 connecting rods and one vibration-suppressing rod. One end of the connecting rod is fixedly connected with the large guide fan blade 1 and the small rectifying fan blade 2, and the other end is hingedly connected with the vibration-suppressing rod and is installed on the top end of the fan blade.

[0059] Embodiment 5: Ventilation adjusting unit arranged with two vertical supports.

[0060] As shown in Figure 6As shown, a ventilation regulating unit coupling external airflow from large fan blades and internal airflow rectification from small fan blades includes a support frame and an adjusting fan blade assembly. The support frame includes an upper horizontal brace 3, a lower horizontal brace 4, and a vertical support 9. The adjusting fan blade assembly includes two large airflow guiding fan blades 1 and 30 small airflow rectifying fan blades 2. The small airflow rectifying fan blades 2 are arranged between the two large airflow guiding fan blades 1. The support frame is made of galvanized steel. The vertical supports 9 are arranged between the left large airflow guiding fan blade and the leftmost small airflow rectifying fan blade, and between the right large airflow guiding fan blade and the rightmost small airflow rectifying fan blade.

[0061] The large guide fan blade 1 is a flat plate structure made of engineering plastic with a width Wd=1.5m; the small rectifier fan blade 2 is a flat plate structure made of engineering plastic with a width Wz=0.2m; and the width of the vertical support is Ws=0.08m.

[0062] When the overlap between the tips of adjacent fan blades is D=0m (e.g.) Figure 9 As shown, the overlap between the large guide fan blade 1 and its adjacent small rectifier fan blade 2, and the overlap between adjacent small rectifier fan blades 2 are both 0m. The spacing between the small rectifier fan blades 2 is Kz=0.2m; the spacing between the large guide fan blade 1 and its adjacent small rectifier fan blade 2 is Ki=0.93m; and the spacing between the large guide fan blade 1 and its adjacent small rectifier fan blade 2 is Kd=7.66m.

[0063] The large guide vane 1 and the small rectifier vane 2 can be adjusted and rotated by the added control actuator, and the angle can be adjusted according to the ambient wind speed and direction.

[0064] Example 6: A ventilation adjustment unit with one vertical support and a local vibration damping linkage.

[0065] like Figure 7 As shown, a ventilation regulating unit coupling external airflow from large fan blades and internal airflow rectification from small fan blades includes a support frame and an adjusting fan blade assembly. The support frame includes an upper horizontal brace 3, a lower horizontal brace 4, and a vertical support 9. The adjusting fan blade assembly includes two large airflow guiding fan blades 1 and four small airflow rectifying fan blades 2. The small airflow rectifying fan blades 2 are arranged between the two large airflow guiding fan blades 1. It also includes a local vibration damping linkage 8. The support frame is made of galvanized steel; the vertical support 9 is located at the center between the small airflow rectifying fan blades.

[0066] The large guide fan blade 1 is a flat plate structure made of aluminum alloy and engineering plastics, with a width Wd=1.2m; the small rectifier fan blade 2 is a flat plate structure made of aluminum alloy and engineering plastics, with a width Wz=0.5m; the width of the vertical support is Ws=0.1m.

[0067] When the overlap between the tips of adjacent fan blades is D=0m (e.g.) Figure 9As shown, the overlap between the large guide fan blade 1 and its adjacent small rectifier fan blade 2, and the overlap between adjacent small rectifier fan blades 2 are both 0m. The spacing between the small rectifier fan blades 2 is Kz=0.5m, of which the spacing at the middle position is Kz=0.5+0.1=0.6m; the spacing between the large guide fan blade 1 and the adjacent small rectifier fan blade 2 is Ki=0.85m; the spacing between the large guide fan blades 1 and the small rectifier fan blade 2 is Kd=3.3m.

[0068] The large guide vane 1 and the small rectifier vane 2 can be adjusted and rotated by the added control actuator, and the angle can be adjusted according to the ambient wind speed and direction.

[0069] The local vibration damping linkage 8 connects the large guide fan blade 1 on the left side and the two (N=2) adjacent small rectifier fan blades 2. It consists of three connecting rods and one vibration damping rod. One end of the connecting rod is fixedly connected to the large guide fan blade 1 and the small rectifier fan blade 2, and the other end is hinged to the vibration damping rod; it is installed at the bottom of the fan blade. Similarly, it can be adjusted according to the number of small rectifier fan blades 2. For example, the local vibration damping linkage 8 connects the large guide fan blade 1 on the left side and one (N=1) adjacent small rectifier fan blades 2 or five (N=5) small rectifier fan blades 2.

[0070] Example 7: A ventilation adjustment unit with two vertical supports and airflow-guiding and vibration-damping linkages.

[0071] like Figure 8 As shown, a ventilation regulating unit that couples external flow guidance of large fan blades and internal flow rectification of small fan blades includes a support frame and an adjusting fan blade assembly; the support frame includes an upper horizontal brace 3, a lower horizontal brace 4 and a vertical support 9; the adjusting fan blade assembly includes two large flow guiding fan blades 1 and four small flow rectifying fan blades 2; the small flow rectifying fan blades 2 are arranged between the two large flow guiding fan blades 1; it also includes a flow guiding and vibration damping linkage 5.

[0072] The support frame is made of galvanized steel; vertical supports 9 are arranged on the left side of the large guide fan blade and the right side of the large guide fan blade.

[0073] The large guide vane 1 is a flat plate structure made of galvanized steel and engineering plastics, with a width Wd=1.2m; the small rectifier vane 2 is a flat plate structure made of galvanized steel and engineering plastics, with a width Wz=0.5m; the width of the vertical support is Ws=0.1m.

[0074] When the overlap between the tips of adjacent fan blades is D = -0.02m (e.g.) Figure 9 As shown, the overlap between the large guide fan blade 1 and its adjacent small rectifier fan blade 2, and the overlap between adjacent small rectifier fan blades 2 are both -0.02m; the spacing between small rectifier fan blades 2 is Kz=0.52m; the spacing between the large guide fan blade 1 and its adjacent small rectifier fan blade 2 is Ki=0.87m; and the spacing between the large guide fan blade 1 and its adjacent small rectifier fan blade 2 is Kd=3.3m.

[0075] The large flow guide fan blade 1 and the small rectification fan blade 2 can be adjusted in rotation by the added regulating and controlling actuator, and are adjusted to different angles according to the environmental wind speed and direction.

[0076] The flow guide and vibration suppression connecting rod 5 connects the two large flow guide fan blades 1, and is composed of two connecting rods and one vibration suppression rod, wherein one end of the connecting rod is fixedly connected with the large flow guide fan blade 1, and the other end is hingedly connected with the vibration suppression rod; and is installed on the outer side of the fan blade.

[0077] 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 realized in other specific forms without departing from the spirit or essential characteristics of the present application; therefore, no matter from which point of view, 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 therefore all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the present application, and any reference signs in the claims should not be regarded as limiting the claims.

[0078] In addition, 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 manner of the specification is only for the sake of clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments which can be understood by those skilled in the art.

Claims

1. A ventilation register incorporating a large-leaf outer induction and a small-leaf inner rectification, comprising a support frame and a register-leaf set, characterized in that: The support frame is composed of upper cross supports and lower cross supports; the adjusting vane group is composed of two large flow guide vanes and M small rectifying vanes, wherein 0≤M≤50, and the adjusting vane group is arranged between the upper cross supports and the lower cross supports; the small rectifying vanes are arranged between the two large flow guide vanes; the ambient air is guided into the ventilation adjusting channel formed by the two large flow guide vanes through the large flow guide vanes, and then the air entering the ventilation adjusting channel is rectified through the M small rectifying vanes, so as to improve the uniformity of the air flow field in the ventilation adjusting channel, reduce the ventilation resistance, and further enhance the ventilation efficiency.

2. A ventilation register incorporating a large-leaf outer airfoil and a small- leaf inner rectifier according to claim 1, characterized in that: The large flow guide vane structure is a flat plate type or an arc structure; the width of the large flow guide vane is Wd, and 0.5m≤Wd≤3m is satisfied.

3. A register unit of the type defined in claim 2, characterized in that: The small rectifying vane is a flat plate type or an arc structure; the width of the small rectifying vane is Wz, and 0.2m≤Wz≤0.5Wd is satisfied.

4. A register unit of the type defined in claim 3, characterized in that: When the number of small rectifying vanes M>1, the spacing between adjacent small rectifying vanes is Kz=Wz-D, wherein D is the overlapping degree of the end of adjacent vanes, and the value range of D is -0.08m~0.08m.

5. A register unit of the type defined in claim 4, characterized in that: When the number of small rectifying vanes M>0, the spacing between the large flow guide vane and the adjacent small rectifying vane is Ki=0.5Wz+0.5Wd-D.

6. A register unit of the type defined in claim 5, characterized in that: When the number of small rectifying vanes M=0, the spacing between the two large flow guide vanes is Kd=Wd-D; when the number of small rectifying vanes M=1, the spacing between the two large flow guide vanes is Kd=Ki*2; when the number of small rectifying vanes M>1, the spacing between the two large flow guide vanes is Kd=Ki*2+Kz*(M-1).

7. A register unit of the type defined in claim 1, wherein: The mounting angle of the large flow guide vane and the small rectifying vane can be adjusted to adapt to different incoming flow directions.

8. A ventilation register incorporating a large-leaf outer airfoil and a small- leaf inner rectifier according to claim 1, characterized in that: The material of the support frame is one or more of carbon steel, galvanized steel, stainless steel and glass steel; the adjusting vane group is made of one or more of aluminum alloy, engineering plastic, glass steel, galvanized steel and stainless steel.

9. A ventilation register incorporating a large-leaf outer airfoil and a small- leaf inner rectifier according to claim 1, characterized in that: The ventilation adjusting unit further comprises a vibration suppression assembly; the vibration suppression assembly is one or more of a flow guide vibration suppression connecting rod, a rectifying vibration suppression connecting rod, a whole vibration suppression connecting rod and a local vibration suppression connecting rod; the flow guide vibration suppression connecting rod is used for connecting two large flow guide vanes; the rectifying vibration suppression connecting rod is used for connecting M small rectifying vanes; the whole vibration suppression connecting rod is used for connecting 2 large flow guide vanes and M small rectifying vanes; the local vibration suppression connecting rod is used for connecting 1 large flow guide vane and N small rectifying vanes adjacent to the large flow guide vane, wherein the value range of N is 1~5.

10. A register unit of the type defined in claim 5, wherein: The support frame further comprises a vertical support arranged at one or more of the following positions: between the left large flow guide vane and the leftmost small rectifying vane, between the right large flow guide vane and the rightmost small rectifying vane, between the left side of the left large flow guide vane, the right side of the right large flow guide vane and the small rectifying vanes.

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