Air duct with radial direct air outlet of wind wheel and design method of air duct

Abstract

The invention belongs to the technical field of air outlet duct structural design, and particularly relates to an air duct with a wind wheel capable of directly discharging air in the radial direction and a design method of the air duct. The air duct comprises a shell, double air duct systems are arranged in the shell, a driving mechanism is arranged between the double air duct systems, and each air duct system comprises an air outlet and an air inlet which are formed in the shell; a wind wheel is arranged between the air outlet and the air inlet, is connected with the output end of the driving mechanism, and is used for introducing fluid into the air duct from the air inlet and discharging the fluid from the air outlet; the fluid guided to the air outlet by the wind wheel is directly thrown to the air outlet in the radial direction, the driving mechanism is started to drive the wind wheel to rotate, the fluid is guided into the air channel from the air inlet by the wind wheel and then is exhausted through the air outlet, and the fluid exhausted to the air outlet by the wind wheel is directly thrown to the air outlet in the radial direction due to the fact that the air outlet mode is direct air outlet, the fluid cannot be disordered. And the air pressure loss is small, and the fluid speed cannot be reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of air outlet duct structure design, and in particular relates to an air duct for straight radial air outlet from a wind wheel and a design method for the air duct. Background Art

[0002] Conventional backward-inclined impellers throw the wind toward the surrounding side walls through the impeller, and squeeze the wind upward through the wind duct formed by the surrounding side walls, while forming negative pressure at the bottom, and finally forming top air outlet. This extrusion air outlet is prone to fluid turbulence and wind pressure loss, and the wind speed slows down.

[0003] For example, the patent application number is CN202210855996.9, which is a hyperbolic extrusion-type guide fluid mechanics air outlet structure, comprising a wind shell with a preset air outlet trajectory, the wind shell being provided with an air inlet, the air inlet being provided with a wind wheel, the wind shell being further provided with an air outlet section, the air outlet section being arranged at the end of the air outlet trajectory of the wind shell, the air outlet section being provided with a closing part and an expansion part in sequence with respect to the air outlet direction, the end of the expansion part forming an air outlet port, but the extrusion-type air outlet of this technical solution is prone to fluid turbulence and loss of wind pressure, and the wind speed is slowed down. Summary of the invention

[0004] The purpose of the present invention is to provide an air duct for direct radial air discharge from a wind wheel and a design method for the air duct to solve the problems in the prior art. The specific technical solution is as follows:

[0005] The present invention proposes an air duct with radial direct air outlet from a wind wheel, comprising a shell, a duct system being arranged in the shell, a driving mechanism being arranged in the duct system, the duct system comprising an air outlet and an air inlet arranged on the shell, a wind wheel being arranged between the air outlet and the air inlet, the driving end of the wind wheel being connected to the output end of the driving mechanism, the wind wheel being used to introduce fluid from the air inlet into the air duct, and then discharge it through the air outlet; wherein the fluid guided to the air outlet by the wind wheel is directly thrown radially to the air outlet by the wind wheel.

[0006] Preferably, the driving mechanism is located in the shell and connected to the driving end of the wind wheel to drive the wind wheel to rotate; and the driving mechanism and the wind wheel form one or more air ducts in the shell.

[0007] Preferably, a filter screen is provided in the housing, the filter screen is provided at the lower end of the wind wheel, a fluid type air duct is provided between the wind wheel and the filter screen, and the fluid type air duct is located between the upper housing and the lower housing;

[0008] The upper part of the fluid type air duct is spaced from the lower end of the wind wheel; the lower part of the fluid type air duct is spaced from the filter.

[0009] Preferably, the diameter of the end of the fluid-type air duct close to the filter is larger than the diameter of the end close to the wind wheel;

[0010] The fluid-type air duct includes curve one, curve two and curve three, and curve one, curve two and curve three together form a fluid-type structure that is narrow at one end and wide at the other end.

[0011] Preferably, the starting position of the air outlet is: point A, where point A is the lower end of the air outlet of the wind wheel blade;

[0012] The terminal position of the air outlet is: point B, which is the inner top of the shell;

[0013] The range of the air outlet is: H2; wherein H2 is from point A to point B.

[0014] Preferably, the wind wheel blades are located between position A and position B;

[0015] The height of the wind rotor blade is: H1, where the lower end of the wind rotor blade is the starting position of H1.

[0016] The size of H1 is less than or equal to the size of H2.

[0017] Preferably, the height of the fluid-type air duct is H3, the starting point of H3 close to one end of the wind wheel is: the opening end surface of the wind wheel blade air inlet is at C, and the range of H3 is: 0.2-1.0 times the wind wheel diameter d.

[0018] Preferably, the opening height of the air outlet is between 0.3 and 1.5 times the height H of the wind wheel; and the opening position of the air outlet is at any position and any range between H2;

[0019] The wind wheel height H is the distance between the lower end of the wind wheel air inlet and the upper end of the wind wheel air outlet.

[0020] Preferably, the driving mechanism is either a dual-axis motor or a single-axis motor; and the air duct system is a single-duct system or a multi-duct system.

[0021] Preferably, there are multiple groups of wind wheels in the multi-duct system; and the driving end of each wind wheel and the wind wheel form a group of wind ducts, and each group of wind ducts is an independent wind duct; the driving mechanism is a dual-axis motor or multiple single-axis motors.

[0022] Preferably,

[0023] When it is a single air duct system, the driving mechanism is a single-shaft motor, and the output end of the single-shaft motor is connected to the wind wheel driving end in the air duct system;

[0024] When there are multiple air duct systems, the driving mechanism is a double-shaft motor, and the two output ends of the double-shaft motor are respectively connected to the driving ends of each wind wheel in the double air duct system;

[0025] When there are multiple air duct systems, when the driving mechanism is a single-axis motor, the single-axis motors are arranged in multiple groups, and the output end of each single-axis motor is connected to the driving end of each wind wheel in the dual air duct system.

[0026] The present invention also provides a method for designing an air duct with radial direct air outlet from a wind wheel, the method being used for designing and forming an air outlet duct, the air outlet duct being applied to an exhaust device, and the fluid discharged to the air outlet by the wind wheel of the air outlet duct is directly thrown to the air outlet by the wind wheel in radial direction;

[0027] One or two opposite sides of the shell are not provided with an air outlet and an air inlet, two radial straight air outlet ducts are arranged in parallel, and the two outer surfaces of the shells without the air outlet and the air inlet are connected and fixed, and the two radial straight air outlet ducts are fixed side by side as a whole, and a four-duct system is formed inside;

[0028] A plurality of radial air ducts for direct air outlet are arranged in parallel and fixedly connected in pairs, so that a multi-duct system is formed inside the ducts.

[0029] In the present invention, the wind duct proposed therein drives the wind wheel through a driving mechanism, and optimizes the position of the wind wheel and the air outlet of the wind duct so that the wind can be discharged radially to the outside of the housing through the wind wheel when the wind is discharged. The fluid guided to the air outlet by the wind wheel is directly radially thrown to the air outlet. Since the air outlet is a straight air outlet, the fluid will not be turbulent, the wind pressure loss is small, and the fluid speed will not slow down; thereby improving the air outlet efficiency of the wind duct. Compared with the wind duct in the prior art that is bent and thrown out, the air outlet efficiency is greatly improved, especially when applied to the air exchange scene, its air exchange efficiency is at least 1.5 times higher than the existing wind wheel exhaust efficiency.

[0030] The advantages of the present invention include at least:

[0031] 1. The fluid guided by the wind wheel to the air outlet is directly thrown radially to the air outlet. Since the air outlet is straight, the fluid will not be turbulent, the wind pressure loss is small, and the fluid speed will not slow down; thereby improving the air outlet efficiency of the air duct.

[0032] 2. The fluid type upward contraction section flowing through the shell makes the velocity distribution gradient of the airflow change less, the wind pressure loss is smaller, and the airflow flows in a faster and more stable form and flow rate, effectively improving the air intake efficiency of the air duct.

[0033] 3. Controlling the opening height H2 (mm) of the air outlet between 0.3H1 (mm) and 1.5H1 (mm) can reduce wind pressure loss and reduce wind noise; controlling the height H3 (mm) of the fluid-type air duct between 0.2d (mm) and 1.0d (mm) can reduce pressure loss and have a higher filter utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The single air duct system structure of the present invention is schematically shown in FIG. Figure 1 ;

[0035] Figure 2 The single air duct system structure of the present invention is schematically shown in FIG. Figure 2 ;

[0036] Figure 3 The single air duct system structure of the present invention is schematically shown in FIG. Figure 3 ;

[0037] Figure 4 The wind wheel structure of the present invention is shown in FIG. Figure 1 ;

[0038] Figure 5 The wind wheel structure of the present invention is shown in FIG. Figure 2 ;

[0039] Figure 6 The double air duct system structure of the present invention is shown in FIG. Figure 1 ;

[0040] Figure 7 The double air duct system structure of the present invention is shown in FIG. Figure 2 ;

[0041] Figure 8 The double air duct system structure of the present invention is shown in FIG. Figure 3 ;

[0042] Fig. 9 The energy recovery component structure of the present invention is schematically shown in FIG. Figure 1 ;

[0043] Fig.10 The energy recovery component structure of the present invention is schematically shown in FIG. Figure 2 ;

[0044] Fig.11 for Fig.10 A partial enlarged view of point C in the middle;

[0045] Fig.12 The energy recovery component structure of the present invention is schematically shown in FIG. Figure 3 ;

[0046] Fig.13 for Fig.12 A partial enlarged view of point D in the middle;

[0047] Fig.14 The energy recovery component structure of the present invention is schematically shown in FIG. Figure 4 ;

[0048] Fig.15 for Fig.14 A partial enlarged view of point E in the middle;

[0049] Fig.16for Fig.14 A partial enlarged view of point F in the middle;

[0050] Fig.17 The energy recovery component structure of the present invention is schematically shown in FIG. Figure 5 ;

[0051] Fig.18 for Fig.17 A partial enlarged view of the G in the middle;

[0052] Fig.19 for Fig.17 A partial enlarged view of the H in the middle;

[0053] Description of the markings in the figure:

[0054] Upper housing 1; top cover 2; motor 3; air outlet 4; rear disc 5; wind wheel blades 6; front disc 7; lower housing 8; air inlet section duct 9; fluid type duct 10; filter 11; baffle 12; air inlet 13; support column 14; energy recovery component; housing 15; outer rotating rod 16; inner rotating rod 17; spring 18; rotating shaft 19; support rod 20; connecting rod 21; push rod 22; spring 23; oblique teeth 24; protrusion 25; impeller 26; curved rod 27; connecting rod Two 28; curved rod two 29; impeller two 30; impeller housing 31; air inlet two 32; air outlet two 33; swing plate one 34; support rod two 35; torsion spring one 36; support plate one 37; side rod one 38; connecting rod three 39; side rod two 40; swing plate two 41; support rod three 42; torsion spring two 43; support plate two 44; slide plate 45; pull rod 46; support rod four 47; guide plate 48; curve one 49; curve two 50; curve three 51; dual-axis motor 52. DETAILED DESCRIPTION

[0055] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0057] Embodiment 1

[0058] like Figure 1-8 As shown, the present invention proposes an air duct with radial direct air outlet from a wind wheel, comprising a shell, a duct system is arranged in the shell, a driving mechanism is arranged in the duct system, the duct system comprises an air outlet 4 and an air inlet 13 arranged on the shell, a wind wheel is arranged between the air outlet 4 and the air inlet 13, a driving end of the wind wheel is connected to the output end of the driving mechanism, the wind wheel is used to introduce the fluid from the air inlet 13 into the air duct, and then discharge it through the air outlet 4; wherein, the fluid guided to the air outlet by the wind wheel is directly thrown radially to the air outlet by the wind wheel.

[0059] In the present invention, the wind duct proposed therein drives the wind wheel through a driving mechanism, and optimizes the position of the wind wheel and the air outlet of the wind duct so that the wind can be discharged radially to the outside of the housing through the wind wheel when the wind is discharged. The fluid guided to the air outlet by the wind wheel is directly radially thrown to the air outlet. Since the air outlet is a straight air outlet, the fluid will not be turbulent, the wind pressure loss is small, and the fluid speed will not slow down; thereby improving the air outlet efficiency of the wind duct. Compared with the wind duct in the prior art that is bent and thrown out, the air outlet efficiency is greatly improved, especially when applied to the air exchange scene, its air exchange efficiency is at least 1.5 times higher than the existing wind wheel exhaust efficiency.

[0060] In the present invention, the fluid type upward contraction section flowing through the shell makes the velocity distribution gradient of the air flow change less, the wind pressure loss is smaller, and the air flow flows in a faster and more stable form and flow rate, effectively improving the air intake efficiency of the air duct. Compared with the linear air intake duct in the prior art, the air intake efficiency is at least 1.5 times higher.

[0061] In one embodiment, according to Figure 1-8 As shown, the driving mechanism is located in the shell and connected to the driving end of the wind wheel to drive the wind wheel to rotate; and the driving mechanism and the wind wheel form one or more air ducts in the shell.

[0062] The working principle of the above technical solution: the dual-duct system is composed of two single-duct systems, and a driving mechanism is arranged between the two single-duct systems. The driving mechanism provides power for the two single-duct systems. The structures and air outlet modes of the two single-duct systems are consistent. For the single-duct system, the driving mechanism is started to drive the wind wheel to rotate. The wind wheel introduces the fluid into the air duct from the air inlet 13 and then discharges it through the air outlet 4. The fluid guided by the wind wheel to the air outlet 4 is directly radially thrown to the air outlet 4. Since the air outlet mode is direct air outlet, the fluid will not be turbulent, the wind pressure loss is small, and the fluid speed will not slow down.

[0063] Embodiment 2

[0064] like Figure 1-8As shown, the wind wheel comprises a rear disc 5 and a front disc 7, a plurality of wind wheel blades 6 are arranged between the rear disc 5 and the front disc 7, and an air inlet hole is arranged at the lower end of the front disc 7;

[0065] The rear disc 5, the front disc 7 and the two adjacent wind wheel blades 6 form an exhaust port, the rear disc 5 at the exhaust port extends horizontally outward, the front disc 7 at the exhaust port is bent downward, the output end of the motor 3 is connected to the rear disc 5, and the front disc 7 rotates inside the upper housing 1;

[0066] The working principle of the above technical solution is as follows: the rear disc 5 at the air outlet extends horizontally outward, and the rear disc 5 has a guiding function, which can make the airflow flow out approximately horizontally and be released directly outward from the air outlet 4; the front disc 7 at the air outlet is downwardly curved, which can increase the aperture of the air outlet and increase the air output.

[0067] Embodiment 3

[0068] like Figure 1-8 As shown, the shell includes an upper shell 1, a lower shell 8 and a top cover 2, the air outlet 4 is arranged on the outer wall of the upper shell 1, the top cover 2 is fixed to the upper end of the upper shell 1, the driving mechanism is fixed in the shell through the top cover 2, the wind wheel rotates inside the upper shell 1, and the upper shell 1 is fixed to the upper end of the lower shell 8;

[0069] A filter screen 11 is provided in the housing, and the filter screen 11 is provided at the lower end of the wind wheel. A fluid type air duct 10 is provided between the wind wheel and the filter screen, and the fluid type air duct 10 is located between the upper housing 1 and the lower housing 8;

[0070] The upper part of the fluid type air duct 10 is spaced apart from the lower end of the wind wheel; the lower part of the fluid type air duct 10 is spaced apart from the filter screen 10;

[0071] The diameter of the end of the fluid type air duct 10 close to the filter 10 is larger than the diameter of the end close to the wind wheel;

[0072] The fluid type air duct 10 includes a curve 1 49, a curve 2 50 and a curve 3 51, which together form a fluid type structure with a narrow end and a wide end.

[0073] The working principle of the above technical solution is: start the driving mechanism to drive the wind wheel to rotate, and the wind wheel throws the air to the surroundings to form an airflow. The airflow is released outward from the air outlet 4 set on the outer wall of the upper shell 1, and a negative pressure is formed under the wind wheel. The outside air enters the air inlet section duct 9 and flows upward through the fluid-type air duct 10. The fluid-type air duct 10 is formed by curve 1 49, curve 2 50 and curve 3 51 to form a fluid-type structure with one end narrow and the other end wide. The velocity distribution gradient of the airflow in the fluid-type air duct 10 changes little, and the wind pressure loss is small. The airflow flows into the wind wheel at a faster and more stable speed and form, and is thrown to the air outlet 4 by the wind wheel.

[0074] Embodiment 4

[0075] like Figure 1-8 As shown, the starting position of the air outlet 4 is: position A, where position A is the lower end of the air outlet of the wind wheel blade 6;

[0076] The terminal position of the air outlet 4 is: point B, which is the inner top of the shell;

[0077] The range of the air outlet 4 is: H2; wherein H2 is from point A to point B;

[0078] The wind wheel blade 6 is located between position A and position B;

[0079] The height of the wind rotor blade 6 is: H1, wherein the lower end of the wind rotor blade 6 is the starting position of H1.

[0080] The size of H1 is less than or equal to the size of H2;

[0081] The height of the fluid-type air duct is H3, the starting point of H3 close to one end of the wind wheel is: the opening end surface of the wind wheel blade 6 air inlet is at C, and the range of H3 is: 0.2-1.0 times the wind wheel diameter d;

[0082] The opening height of the air outlet 4 is between 0.3 and 1.5 times the height H of the wind wheel; and the opening position of the air outlet 4 is at any position and any range between H2;

[0083] The wind wheel height H is the distance between the lower end of the wind wheel air inlet and the upper end of the wind wheel air outlet;

[0084] The working principle of the above technical solution is as follows: for the existing fluid-type air duct 10 designed to expand suddenly, due to the inertia of the fluid, the fluid particles cannot immediately adhere to the wall surface at the sudden expansion point, but leave the wall surface at the sharp point of the corner, and a series of vortices appear. As the fluid flows, the fluid particles will occupy the entire cross-section of the pipe;

[0085] For the existing fluid-type air duct 10 designed to shrink suddenly, the fluid first separates at the corner of the large tube to form a separation zone, and then forms a separation zone in the small tube. Finally, it occupies the entire cross-section of the pipe;

[0086] For the existing fluid-type air duct 10 designed as a curved pipe, when the fluid flows through the curved pipe, the pressure distribution on the inner and outer walls is different, the streamline is bent, and the pressure on the outer side is greater than that on the inner side due to the centripetal force. The fluid particles tend to flow from the outer side to the inner side of the eye tube wall. At the same time, the flow velocity is reduced at the curved part, and flow separation occurs, forming a vortex, increasing the loss, and forming a secondary flow;

[0087] Therefore, the fluid-type air duct 10 is designed to be fluid-type and contract upward to reduce local wind pressure loss;

[0088] The experimental test selected three types of fluid-type air ducts 10, namely H3 = 110 mm, H3 = 70 mm and H3 = 30 mm, and carried out fluid simulation experiments under the same configuration conditions, where the wind wheel diameter d = 230 mm;

[0089] The simulation results show that when H3 increases from 70 mm to 110 mm, the performance improves by about 4.8%, but when L decreases from 70 mm to 30 mm, the performance decreases by about 14%;

[0090] The larger the length H3 of the fluid-type air duct 10 is, the better the performance is; however, as the length H3 of the fluid-type air duct 10 continues to increase, the performance improvement will become smaller and smaller. At the same time, an excessively large length of the fluid-type air duct 10 will also affect the product size and appearance. Therefore, controlling H3 (mm) between 0.2d (mm) and 1.0d (mm) can reduce pressure loss and have a higher filter utilization rate.

[0091] Embodiment 5

[0092] like Figure 1-8 As shown, the driving mechanism is any one of a dual-axis motor 52 or a single-axis motor 3; the air duct system is a single-duct system or a multi-duct system.

[0093] Preferably, there are multiple groups of wind wheels in the multi-duct system; and the driving end of each wind wheel and the wind wheel form a group of wind ducts, and each group of wind ducts is an independent wind duct; the driving mechanism is a dual-axis motor 52 or multiple single-axis motors 3.

[0094] Preferably,

[0095] When it is a single air duct system, the driving mechanism is a single-axis motor 3, and the output end of the single-axis motor 3 is connected to the wind wheel driving end in the air duct system;

[0096] The working principle of the above technical solution is: start the motor 3 to drive the wind wheel to rotate, and the wind wheel swings the air to the surroundings to form an airflow. The airflow is released outward from the air outlet 4 set on the outer wall of the upper shell 1, and a negative pressure is formed under the wind wheel. The external airflow enters the shell from the air inlet 13 and flows upward. The filter 11 filters and the fluid type contracts upward when passing through the shell. The velocity distribution gradient of the airflow changes less, and the wind pressure loss is less, so that the airflow flows at a faster and more stable speed and form.

[0097] Embodiment 6

[0098] When there are multiple air duct systems, the driving mechanism is a double-shaft motor 52, and the two output ends of the double-shaft motor 52 are respectively connected to the driving ends of each wind wheel in the double air duct system;

[0099] The working principle of the above technical solution: the dual-axis motor 52 can control the wind wheels on its upper and lower sides to rotate simultaneously, so that the air outlets 4 set on the upper and lower sides of the shell can take in air at the same time, increasing the air intake volume and air intake range, and has the effect of simple operation and increased air intake and air outlet volume.

[0100] Embodiment 7

[0101] When there are multiple air duct systems, when the driving mechanism is a single-axis motor 3, the single-axis motor 3 is provided in multiple groups, and the output end of each single-axis motor 3 is connected to the driving end of each wind wheel in the dual air duct system.

[0102] The working principle of the above technical solution: there is a one-to-one correspondence between the multiple single-axis motors 3 and the multiple wind wheels in the multi-duct system. Therefore, according to actual needs, one of the single-axis motors 3 or multiple single-axis motors 3 can be started, and then the multi-duct system can realize the operation of one of the ducts or multiple ducts at the same time, which has the advantages of diversified duct operation and strong adaptability.

[0103] Embodiment 8

[0104] like Figure 1-19 As shown, a baffle 12 is provided on the side of the lower shell 8, a support column 14 is provided at the lower end of the lower shell 8, and an energy recovery component is provided on the outer side of the lower shell 8;

[0105] The working principle of the above technical solution is as follows: the filter 11 can filter impurities in the air, and the baffle 12 is connected to the side wall of the lower shell 8 by snapping, so as to limit the filter 11 in the lower shell 8. When the filter 11 needs to be replaced, the baffle 12 is removed, the filter 11 is pulled out, and a new filter 11 is inserted into the lower shell 8, and then the baffle 12 is snapped on the side wall of the lower shell 8, thereby completing the replacement and limiting of the filter 11;

[0106] The external airflow can enter the air outlet duct from the air inlet 13, and the airflow passes through the filter 11 in the air outlet duct, and then passes through the wind wheel to be thrown out from the air outlet 4. The energy recovery component can recover the wind energy of the fluid thrown out from the air outlet 4 and convert it into mechanical energy, so as to gather the external wind to the air inlet 13, thereby accelerating the air intake of the air outlet duct;

[0107] The support column 14 plays a role in supporting and fixing the entire air outlet duct.

[0108] Embodiment 9

[0109] like Figure 1-19As shown, the energy recovery component includes a housing 15, and push rods 22 are slidably connected to the four sides of the housing 15. The front ends of the four push rods 22 are against the outer wall of the lower housing 8. A spring 23 is provided between the housing 15 and the push rods 22. The push rods 22 are slidably connected to a connecting rod 21. The two ends of the connecting rod 21 are respectively rotatably connected to two support rods 20. The two support rods 20 are vertically fixed on the rotating shaft 19, and the rotating shaft 19 rotates in the housing 15;

[0110] The rotating shaft 19 is fixedly connected to the inner rotating shaft 17, and the inner rotating shaft 17 is slidably connected to the outer rotating shaft 16. A spring 18 is provided between the inner rotating shaft 17 and the outer rotating shaft 16. The outer housing 15 is provided with a helical tooth 24. A protrusion 25 is fixed at the lower end of the outer rotating shaft 16, and the protrusion 25 is clamped on the helical tooth 24.

[0111] The working principle of the above technical solution is as follows: the energy recovery component is sleeved on the outside of the upper shell 1 and the lower shell 8, and the outer rotating rod 16 is rotated, and the outer rotating rod 16 drives the inner rotating rod 17 to rotate, and the convex block 25 at the lower end of the outer rotating rod 16 slides with the bevel gear 24. Under the pulling force of the spring 18, the convex block 25 at the lower end of the outer rotating rod 16 is kept always sliding with the bevel gear 24. When the inner rotating rod 17 rotates, the rotating shaft 19 is driven to rotate, and the two supporting rods 120 vertically distributed on the rotating shaft 19 are driven to rotate with the rotating shaft 19, and the connecting rod 121 is driven to move, and the connecting rod 121 and the push rod 22 slide. Since the connecting rod 121 is constantly close to the outer wall of the lower shell 8, the connecting rod 121 and the push rod 22 slide, and the push rod 22 is squeezed to slide into the lower shell 8, driving the spring 23 to be stretched, and the push rods 22 on the other three surfaces slide into the lower shell 8 in the same way. The four push rods 22 move together to clamp the lower shell 8, thereby completing the fixation between the energy recovery component and the lower shell 8;

[0112] Pull the outer rotating rod 16 backward, driving the protrusion 25 at the lower end of the outer rotating rod 16 to separate from the bevel tooth 24, driving the spring 18 to be stretched, and rotating the outer rotating rod 16 in the opposite direction, driving the inner rotating rod 17 and the rotating shaft 19 to rotate, driving the support rod 1 20 to rotate, driving the connecting rod 1 21 to continuously move away from the outer wall of the lower shell 8, and the connecting rod 1 21 pulls the push rod 22 to slide outward on the side wall of the lower shell 8, driving the spring 2 23 to contract, and the front end of the push rod 22 is separated from the lower shell 8, thereby facilitating the removal of the energy recovery component;

[0113] The beneficial effects of the above technical solution are: the energy recovery component can be installed and disassembled conveniently and quickly; it can be adapted to different types of air outlet ducts; the air outlet duct can be fixed at the center of the energy recovery component, so that the energy recovery rates on the four sides of the air outlet duct are similar.

[0114] Embodiment 10

[0115] like Figure 1-19As shown, the upper end of the housing 15 is rotatably connected to an impeller 26, a guide plate 48 is fixed inside the housing 15, a bent rod 1 27 is provided inside the impeller 26, the bent rod 1 27 is rotatably connected to the upper end of the second connecting rod 28, the lower end of the second connecting rod 28 is rotatably connected to the second bent rod 29, the second bent rod 29 is arranged inside the second impeller 30, the second impeller 30 rotates in the impeller housing 31, the impeller housing 31 is fixed to the lower end of the housing 15, one side of the impeller housing 31 is provided with a second air inlet 32, the other side of the impeller housing 31 is provided with a second air outlet 33, the second air outlet 33 corresponds to the air inlet 13;

[0116] The working principle of the above technical solution is as follows: the wind blown out from the air outlet 4 is blown obliquely upward through the guide plate 48, the wind drives the impeller 26 to rotate, drives the curved rod 1 27 to rotate, drives the connecting rod 28 to move, drives the curved rod 29 to rotate, drives the impeller 2 30 to rotate in the impeller housing 31, and the impeller 2 30 sucks the external wind from the air inlet 2 32 and blows it from the air outlet 2 33 to the air inlet 13, thereby accelerating the air intake, recovering the wind energy of the air outlet duct, and converting it into mechanical energy. The mechanical energy sends the wind to the air inlet 13, accelerating the air intake of the air outlet duct.

[0117] Embodiment 11

[0118] like Figure 1-19 As shown, a plurality of support plates 1 37 are fixed to the outside of the housing 15, a support rod 2 35 is fixed between two support plates 1 37 on the same side, the support rod 2 35 is rotatably connected to the swing plate 1 34, a torsion spring 1 36 is provided between the swing plate 1 34 and the support plate 1 37, the support rod 2 35 is fixedly connected to the side rod 1 38, the side rod 1 38 is rotatably connected to the upper end of the connecting rod 3 39, the lower end of the connecting rod 3 39 is rotatably connected to the side rod 2 40, the side rod 2 40 is fixed on the swing plate 2 41, the swing plate 2 41 is rotatably connected to the support rod 3 42, the support rod 3 42 is fixed between the two support plates 2 44, the two support plates 2 44 are both fixed to the outside of the housing 15, and a torsion spring 2 43 is provided between the swing plate 2 41 and the support plate 2 44;

[0119] The swing plate 41 is provided with a notch, and a slide plate 45 is slidably connected to the notch. The slide plate 45 is rotatably connected to one end of a pull rod 46, and the other end of the pull rod 46 is fixed to a support rod 47. The two ends of the support rod 47 are rotatably connected to the two support plates 44.

[0120] The working principle of the above technical solution is as follows: the wind blown out from the air outlet 4 is blown obliquely upward through the guide plate 48, the wind drives the impeller 26 to rotate, and the wind continues to blow outward, driving the swing plate 1 34 to rotate, driving the torsion spring 1 36 to deform, when the wind force is less than the elastic force of the torsion spring 1 36, the swing plate 1 34 rotates in the opposite direction, after the torsion spring 1 36 has no torque, the wind force blows the swing plate 1 34 to rotate, thus driving the swing plate 1 34 to swing back and forth, driving the side rod 1 38 to rotate back and forth with the swing plate 1 34, driving the side rod 2 40 to rotate back and forth through the connecting rod 3 39, and driving the swing plate 2 41 to swing back and forth;

[0121] When the lower end of the swing plate 41 rotates away from the lower housing 8, the pull rod 46 pulls the slide plate 45 to slide upward on the swing plate 41, and the notch provided on the swing plate 41 is exposed, thereby reducing wind obstruction; when the lower end of the swing plate 41 rotates toward the lower housing 8, the pull rod 46 pushes the slide plate 45 to slide downward on the swing plate 41, and the notch provided on the swing plate 41 is blocked by the slide plate 45, thereby increasing the amount of air pushed, and pushing the farther wind toward the air inlet 32 ​​provided on the impeller housing 31, thereby facilitating the impeller 30 to deliver the wind to the air inlet 13;

[0122] The beneficial effects of the above technical solution are as follows: the first stage of air supply is to push the wind from farther away to the air inlet 32 ​​set on the impeller housing 31, and the second stage of air supply is to send the wind to the air inlet 13 through the impeller 2 30, recover the wind energy of the air outlet duct, and convert it into mechanical energy. Through the above two stages of air supply, the air intake of the air outlet duct is accelerated.

[0123] Embodiment 12

[0124] like Figure 1-19 As shown, a method for designing an air duct with radial direct air outlet from a wind wheel is used to design and form an air outlet duct, the air outlet duct is applied to an exhaust device, and the fluid discharged from the wind wheel of the air outlet duct to the air outlet 4 is directly thrown radially by the wind wheel to the air outlet 4;

[0125] The shell has one side or two opposite sides without an air outlet 4 and an air inlet 13, two radial air ducts for direct air outlet are arranged in parallel, and the two outer surfaces of the shell without the air outlet 4 and the air inlet 13 are connected and fixed, and the two radial air ducts for direct air outlet are fixed side by side as a whole, and a four-duct system is formed inside;

[0126] Multiple radial air ducts are arranged in parallel and fixedly connected in pairs, so that a multi-duct system is formed inside;

[0127] The working principle of the above technical solution is: the air flow speeds at the air inlet 13 and the air outlet 4 are 2-3 m / s and 5-7 m / s respectively. Under the influence of the impeller rotation, the air duct and the impeller rear disc guide and the air outlet height, the air flow will rotate upward and flow out of the air outlet 4;

[0128] There is an obvious whirlpool phenomenon near the impeller outlet 4, and the speed is not low. This is because there is a suddenly expanded airflow channel from the impeller outlet to the air outlet 4. The airflow will flow into the suddenly expanded airflow channel area under the guidance of the air duct, and will cause pressure loss to a certain extent. The outflowing high-speed airflow will drive the low-speed airflow at the edge of the sudden expansion section to flow and form a vortex, causing a certain degree of noise increase.

[0129] Controlling H2(mm) between 0.3H1(mm) and 1.5H1(mm) can reduce wind pressure loss and wind noise;

[0130] For the fluid-type air duct 10 designed to expand suddenly, due to the inertia of the fluid, the fluid particles cannot immediately adhere to the wall surface at the sudden expansion point, but leave the wall surface at the sharp point of the corner, and a series of vortices appear. As the fluid flows, the fluid particles will occupy the entire cross-section of the duct;

[0131] For the fluid-type air duct 10 designed to shrink suddenly, the fluid first separates at the corner of the large tube to form a separation zone, and then forms a separation zone in the small tube. Finally, it occupies the entire cross-section of the pipe;

[0132] For the fluid-type air duct 10 designed as a curved pipe, when the fluid flows through the curved pipe, the pressure distribution on the inner and outer walls is different, the streamline is bent, and the pressure on the outer side is greater than that on the inner side due to the centripetal force. The fluid particles tend to flow from the outer side to the inner side of the eye tube wall. At the same time, the flow velocity is reduced at the curved part, and flow separation occurs, forming a vortex, increasing the loss, and forming a secondary flow;

[0133] Therefore, the fluid-type air duct 10 is designed to be fluid-type and contract upward to reduce local wind pressure loss;

[0134] The experimental test selected three types of fluid-type air ducts 10, namely H3 = 110 mm, H3 = 70 mm and H3 = 30 mm, and carried out fluid simulation experiments under the same configuration conditions, where the wind wheel diameter d = 230 mm;

[0135] The simulation results show that when H3 increases from 70 mm to 110 mm, the performance improves by about 4.8%, but when L decreases from 70 mm to 30 mm, the performance decreases by about 14%;

[0136] The larger the length H3 of the fluid-type air duct 10 is, the better the performance is; however, as the length H3 of the fluid-type air duct 10 continues to increase, the performance improvement will become smaller and smaller. At the same time, an excessively large length of the fluid-type air duct 10 will also affect the product size and appearance. Therefore, controlling H3 (mm) between 0.2d (mm) and 1.0d (mm) can reduce pressure loss and have a higher filter utilization rate.

[0137] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An air duct for direct radial air discharge from a wind wheel, characterized in that: The invention comprises a shell, an air duct system is arranged in the shell, and a driving mechanism is arranged in the air duct system. The air duct system comprises an air outlet (4) and an air inlet (13) arranged on the shell, and a wind wheel is arranged between the air outlet (4) and the air inlet (13). The driving end of the wind wheel is connected to the output end of the driving mechanism. The wind wheel is used to introduce fluid from the air inlet (13) into the air duct and then discharge it through the air outlet (4); wherein the fluid guided to the air outlet by the wind wheel is directly radially thrown to the air outlet by the wind wheel.

2. The wind duct for direct radial air discharge from a wind wheel according to claim 1, characterized in that: The driving mechanism is located in the housing and connected to the driving end of the wind wheel, and is used to drive the wind wheel to rotate; and the driving mechanism and the wind wheel form one or more air ducts in the housing.

3. The wind duct for direct radial air discharge from a wind wheel according to claim 1, characterized in that: A filter screen (11) is provided in the housing, the filter screen (11) is provided at the lower end of the wind wheel, a fluid type air duct (10) is provided between the wind wheel and the filter screen, and the fluid type air duct (10) is located between the upper housing (1) and the lower housing (8); The upper part of the fluid-type air duct (10) is spaced apart from the lower end of the wind wheel; the lower part of the fluid-type air duct (10) is spaced apart from the filter screen (10).

4. The wind duct for direct radial air discharge from a wind wheel according to claim 3, characterized in that: The diameter of the end of the fluid-type air duct (10) close to the filter (10) is larger than the diameter of the end close to the wind wheel; The fluid-type air duct (10) comprises a first curve (49), a second curve (50) and a third curve (51), wherein the first curve (49), the second curve (50) and the third curve (51) together form a fluid-type structure that is narrow at one end and wide at the other end.

5. The wind duct for direct radial air discharge from a wind wheel according to claim 1, characterized in that: The starting position of the air outlet (4) is: point A, which is the lower end of the air outlet of the wind wheel blade (6); The end position of the air outlet (4) is: point B, which is the inner top of the shell; The range of the air outlet (4) is: H2; wherein H2 is from point A to point B.

6. The wind duct for direct radial air discharge from a wind wheel according to claim 5, characterized in that: The wind wheel blades (6) are located between position A and position B; The height of the wind rotor blade (6) is: H1, wherein the lower end of the wind rotor blade (6) is the starting position of H1. The size of H1 is less than or equal to the size of H2.

7. The wind duct for direct radial air discharge from a wind wheel according to claim 3, characterized in that: The height of the fluid-type air duct (10) is H3, and the starting point of H3 close to one end of the wind wheel is: the opening end surface of the wind wheel blade (6) air inlet is at C, and the range of H3 is: 0.2-1.0 times the wind wheel diameter d.

8. The wind duct for direct radial air discharge from a wind wheel according to claim 1, characterized in that: The opening height of the air outlet (4) is between 0.3 and 1.5 times the height H of the wind wheel; and the opening position of the air outlet (4) is at any position and any range between H2; The wind wheel height H is the distance between the lower end of the wind wheel air inlet and the upper end of the wind wheel air outlet.

9. The wind duct for direct radial air discharge from a wind wheel according to claim 1, characterized in that: The driving mechanism is any one of a dual-axis motor (52) or a single-axis motor (3); and the air duct system is a single-duct system or a multi-duct system.

10. The wind duct for direct radial air discharge from a wind wheel according to claim 9, characterized in that: There are multiple groups of wind wheels in the multi-duct system; the driving end of each wind wheel and the wind wheel form a group of wind wheels, and each group of wind wheels is an independent wind wheel; the driving mechanism is a dual-axis motor (52) or multiple single-axis motors (3).

11. The wind duct for direct radial air discharge from a wind wheel according to claim 9, characterized in that: In the case of a single air duct system, the driving mechanism is a single-shaft motor (3), and the output end of the single-shaft motor (3) is connected to the wind wheel driving end in the air duct system; When there are multiple air duct systems, the driving mechanism is a double-shaft motor (52), and the two output ends of the double-shaft motor (52) are respectively connected to the driving ends of each wind wheel in the double air duct system; When there are multiple air duct systems, when the driving mechanism is a single-axis motor (3), the single-axis motor (3) is provided in multiple groups, and the output end of each single-axis motor is connected to the driving end of each wind wheel in the dual air duct system.

12. A method for designing an air duct for radial direct air discharge from a wind wheel, characterized in that: The method is used to design and form an air outlet duct, wherein the air outlet duct is applied to an exhaust device, and the fluid discharged to the air outlet (4) by the wind wheel of the air outlet duct is directly thrown radially by the wind wheel to the air outlet (4); The shell has one or two opposite sides without an air outlet (4) and an air inlet (13), two radial air ducts for direct air outlet are arranged in parallel, and the two outer surfaces of the shell without the air outlet (4) and the air inlet (13) are connected and fixed, and the two radial air ducts for direct air outlet are fixed side by side as a whole, forming a four-duct system inside; A plurality of radial air ducts for direct air outlet are arranged in parallel and fixedly connected in pairs, so that a multi-duct system is formed inside the ducts.

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