Automatic adjusting device for air outlet direction of fan

Abstract

The invention provides a fan air outlet direction automatic adjusting device, and relates to the technical field of fans, the fan air outlet direction automatic adjusting device comprises an air outlet pipe, the air outlet pipe is arranged on one side of a fan body, a plurality of air guide plates are horizontally arranged in the air outlet pipe at equal intervals, connecting plates are arranged at the left and right ends of the air guide plates, and rotating shafts are arranged at the ends, away from the air guide plates, of the connecting plates; a stepping motor is arranged on the outer wall of one side of the air outlet pipe, the output end of the stepping motor is connected with one rotating shaft, a connecting rod is arranged outside the other side of the air outlet pipe, a plurality of cams are arranged on the connecting rod and distributed in an array mode in the length direction of the connecting rod, and one end of each cam is connected with the connecting rod. The other end of the cam is connected with the rotating shaft. According to the fan, the air guide plate can guide airflow and restrain the airflow direction, the angle of the air guide plate can be adjusted through the stepping motor, the air outlet direction of the air outlet is matched with the angle of the air flue, and it is avoided that the air outlet direction of the air outlet of the fan body is not matched with the air flue to form a turbulent flow group.

Description

Technical Field

[0001] The invention relates to the technical field of fans, and in particular to an automatic adjustment device for the air outlet direction of a fan. Background Art

[0002] In the air-conditioning system of rail transit vehicles, the fan outlet and air duct constitute the air-conditioning delivery system, which is responsible for delivering external airflow and heated, cooled and purified airflow to the interior of each compartment.

[0003] For example, a Chinese patent with authorization announcement number CN220229516U discloses a fresh air fan outlet structure with a guide vane, which belongs to the technical field of fresh air fans and includes an outlet body, one end of the outlet body is provided with a mounting groove, the inner wall of the mounting groove is provided with symmetrical mounting holes and limit grooves, an air duct is provided at the center of the outlet body, one end of the outlet body is plugged with a guide vane, the sides of the guide vane are provided with symmetrical sound-absorbing pads, one end of the guide vane is fixedly connected to a mounting frame, and the surface of the mounting frame is plugged with fastening screws. The fresh air fan outlet structure with a guide vane has the function of disassembly and combination between the guide vane and the outlet body through the provided mounting frame, mounting groove and limit groove, which greatly reduces the manufacturing difficulty of the fresh air fan outlet, thereby reducing the production cost and improving the market competitiveness; and the sound-absorbing pads provided on both sides of the guide vane can mute and reduce the noise, greatly improving the quiet effect of the fresh air fan outlet.

[0004] Since the vehicle operation area and usage location determine the different designs of the air duct, and the size is limited and cannot be adjusted, the fan must be matched with the air duct before installation to verify whether the performance data such as air volume, noise, and electrical parameters after overcoming its resistance meet the vehicle design requirements. In the matching test, there will be a problem that the air outlet direction of the fan does not match the angle of the air duct inlet. The guide vane of the above application is fixedly set on the air outlet body, and the guide vane angle cannot be adjusted. When the air outlet direction of the fan does not match the angle of the air duct inlet, a turbulent group will be formed at the connection between the air outlet and the air duct, resulting in excessive overall noise, severe flow loss, low fan efficiency, and overcurrent. At this time, the overall performance requirements can only be met by adjusting the fan design, such as increasing the fan operating frequency, increasing the size and redesigning the rotating parts, etc., which also leads to excessive energy consumption of the fan itself, repeated rework, repeated testing, and a significant extension of the product development cycle. Summary of the invention

[0005] The present invention provides an automatic adjustment device for the air outlet direction of a fan, which is used to solve the technical problem that the angle of the guide vane cannot be adjusted and the air outlet direction of the fan does not match the angle of the air duct inlet, which will cause a turbulent group to be formed at the connection position between the air outlet and the air duct.

[0006] In order to solve the above technical problems, the present invention discloses an automatic adjustment device for the air outlet direction of a fan, comprising: an air outlet duct, the air outlet duct is arranged on one side of the fan body, a plurality of air guide plates are horizontally arranged in the air outlet duct, the plurality of air guide plates are arranged at equal intervals, connecting plates are arranged at left and right ends of the air guide plates, a rotating shaft is arranged at one end of the connecting plate away from the air guide plate, the rotating shaft is rotatably connected to the side wall of the air outlet duct, a stepper motor is arranged on the outer wall of one side of the air outlet duct, the output end of the stepper motor is connected to one of the rotating shafts, a connecting rod is arranged on the outside of the other side of the air outlet duct, a plurality of cams are arranged on the connecting rod, the plurality of cams are distributed in an array along the length direction of the connecting rod, one end of the cam is connected to the connecting rod, and the other end of the cam is connected to the rotating shaft.

[0007] Preferably, a controller is provided on the air outlet duct, the controller is electrically connected to the stepper motor, a wind speed sensor is provided on one of the air guide plates, the wind speed sensor is located in the middle of the air guide plate, and the wind speed sensor is electrically connected to the controller.

[0008] Preferably, the cross-section of the connection position between the rotating shaft and the cam is a non-circular structure.

[0009] Preferably, a slide groove is provided on one side of the connecting plate close to the air guide plate, a connecting strip is slidably provided in the slide groove, and one end of the connecting strip is connected to the end of the air guide plate.

[0010] Preferably, an open end is arranged at the front end of the slide groove, and a closed end is arranged at the rear end of the slide groove.

[0011] Preferably, a horizontal slide is provided in the connecting plate, one end of the horizontal slide is connected with the end of the slide groove away from the air guide plate, a guide hole is provided on the upper surface of the connecting plate, the lower end of the guide hole is connected with the horizontal slide, a push block is slidably provided in the horizontal slide, the upper end of the push block extends into the guide hole and is slidably connected with the inner wall of the guide hole, a compression spring is provided on the side of the push block away from the air guide plate, one end of the compression spring is connected with the end of the horizontal slide away from the air guide plate, a limit column is provided on the side of the push block close to the air guide plate, a limit hole is provided on the side of the connecting strip close to the horizontal slide, and the limit hole is adapted to the limit column.

[0012] Preferably, a sliding hole is vertically arranged in the push block, a driving block is slidably arranged in the sliding hole, the lower end of the driving block is connected to the bottom wall of the sliding hole through a reset spring, and the upper end of the driving block extends to the outside of the guide hole.

[0013] Preferably, a guiding inclined surface is provided on one side of the upper end of the driving block close to the air guide plate.

[0014] Preferably, two movable rods are arranged in the air outlet duct, the two movable rods are arranged vertically, and the upper and lower ends of the movable rods are respectively connected to the upper and lower inner walls of the air outlet duct for left and right sliding connection, the movable rod is located on the side of the air guide plate away from the air outlet, a sliding rod is arranged on the front side wall of the movable rod, the sliding rod is connected to the front side wall of the movable rod for up and down sliding connection, scrapers are symmetrically arranged on the upper and lower sides of the air guide plate, the scraper contacts the outer wall of the air guide plate close to the air guide plate, the rear ends of the two scrapers are connected by a fixed plate, a connecting rod is arranged between the fixed plate and the sliding rod, one end of the connecting rod is connected to the side wall of the fixed plate, and the other end of the connecting rod is rotatably connected to the sliding rod through a rotating shaft.

[0015] Preferably, an installation cavity is provided inside the moving rod, the installation cavity passes through the side wall of the moving rod near one end of the sliding rod, a partition is provided in the installation cavity, a through hole is provided in the center of the partition, a push rod is slidably provided in the through hole, a friction block is provided at one end of the push rod near the sliding rod, the friction block contacts the side wall of the sliding rod, a connecting spring is provided outside the push rod, the friction block is connected to the partition through the connecting spring, the end of the push rod away from the friction block passes through the through hole and is provided with an electromagnet, the electromagnet is electrically connected to the controller, a fixed block is provided at one end of the installation cavity away from the sliding rod, and the fixed block is made of magnetic metal.

[0016] The technical solution of the present invention has the following advantages: the present invention provides an automatic adjustment device for the air outlet direction of a fan, which relates to the technical field of fans, including an air outlet duct, the air outlet duct is arranged on one side of the fan body, a plurality of air guide plates are arranged horizontally in the air outlet duct, the plurality of air guide plates are arranged at equal intervals, connecting plates are arranged at the left and right ends of the air guide plates, a rotating shaft is arranged at one end of the connecting plate away from the air guide plate, the rotating shaft is rotatably connected to the side wall of the air outlet duct, a stepper motor is arranged on the outer wall of one side of the air outlet duct, the output end of the stepper motor is connected to one of the rotating shafts, a connecting rod is arranged on the outside of the other side of the air outlet duct, a plurality of cams are arranged on the connecting rod, and the plurality of cams are distributed in an array along the length direction of the connecting rod, one end of the cam is connected to the connecting rod, and the other end of the cam is connected to the rotating shaft. In the present invention, the air guide plate can guide the airflow and constrain the airflow direction. The angle of the air guide plate can be adjusted by the stepper motor so that the air outlet direction of the air outlet matches the angle of the air duct, thereby avoiding the formation of a turbulent group due to the mismatch between the air outlet direction of the fan body and the air duct.

[0017] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the devices particularly pointed out in the written description and the drawings of the description.

[0018] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of a device for automatically adjusting the air outlet direction of a fan according to the present invention;

[0021] Figure 2 It is a schematic diagram of another viewing angle of a device for automatically adjusting the air outlet direction of a fan according to the present invention;

[0022] Figure 3 Schematic diagram of the airflow in the front air duct adjusted for the existing air outlet direction;

[0023] Figure 4 This is a schematic diagram of the airflow in the air duct after the air outlet direction is adjusted in the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of the air outlet duct in the present invention;

[0025] Figure 6 A top view of the internal structure of the connecting plate in the present invention;

[0026] Figure 7 For the present invention Figure 5 A magnified view of the structure at center;

[0027] Figure 8 For the present invention Figure 5 Partial cross-sectional view at the middle BB;

[0028] Fig. 9 For the present invention Figure 8 Enlarged view of the structure at point C in the middle.

[0029] In the figure: 1, air outlet duct; 2, fan body; 3, air guide plate; 301, wind speed sensor; 4, connecting plate; 5, rotating shaft; 6, stepping motor; 7, connecting rod; 8, cam; 9, air duct; 10, slide groove; 11, connecting strip; 12, horizontal slide; 13, guide hole; 14, push block; 15, compression spring; 16, limit column; 17, limit hole; 18, sliding hole; 19, drive block; 20, reset spring; 21, moving rod; 22, sliding rod; 23, scraper; 24, fixed plate; 25, connecting rod; 26, rotating shaft; 27, installation cavity; 28, partition; 29, push rod; 30, friction block; 31, connecting spring; 32, electromagnet; 33, fixed block. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0031] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] Example 1

[0033] The embodiment of the present invention provides a device for automatically adjusting the air outlet direction of a fan, such as Figure 1-Figure 9 As shown, it includes: an air outlet duct 1, the air outlet duct 1 is arranged on one side of the fan body 2, a plurality of air guide plates 3 are horizontally arranged in the air outlet duct 1, the plurality of air guide plates 3 are arranged at equal intervals, connecting plates 4 are arranged at the left and right ends of the air guide plates 3, a rotating shaft 5 is arranged at one end of the connecting plate 4 away from the air guide plate 3, the rotating shaft 5 is rotatably connected to the side wall of the air outlet duct 1, a stepping motor 6 is arranged on the outer wall of one side of the air outlet duct 1, the output end of the stepping motor 6 is connected to one of the rotating shafts 5, a connecting rod 7 is arranged on the outside of the other side of the air outlet duct 1, a plurality of cams 8 are arranged on the connecting rod 7, and the plurality of cams 8 are distributed in an array along the length direction of the connecting rod 7, one end of the cam 8 is connected to the connecting rod 7, and the other end of the cam 8 is connected to the rotating shaft 5.

[0034] The working principle and beneficial effects of the above technical solution are as follows: an air outlet pipe 1 is arranged on one side of the fan body 2, and the end of the air outlet pipe 1 away from the fan body 2 is connected to the air duct 9, and an air outlet is arranged at the outlet of the air outlet pipe 1. The air flow generated by the fan body 2 flows to the air duct 9 through the air outlet, and an air guide plate 3 is arranged in the air outlet pipe 1. The air flow can be guided by the air guide plate 3 to constrain the air flow direction so that the air outlet maintains a stable air outlet direction. The air guide plate 3 is connected to the rotating shaft 5 through the connecting plate 4, and one of the rotating shafts 5 is connected to the output end of the stepping motor 6. Cams 8 are arranged at the ends of the rotating shaft 5 away from the stepping motor 6, and multiple cams 8 are connected by connecting rods 7. The connecting rods 7 connect the multiple cams 8 in series, and the stepping motor 6 can rotate to The rotating shaft 5 is driven to rotate, and the rotating shaft 5 rotates through the connecting plate 4 to drive the air guide plate 3 to rotate. The air guide plate 3 rotates to drive the connecting plate 4 on the other side to rotate the rotating shaft 5, and drives the cam 8 to rotate. The cam 8 drives the other cams 8 to rotate synchronously through the connecting rod 7, so that the other rotating shafts 5 also rotate, thereby synchronously driving the other air guide plates 3 to rotate in the same direction. The angle of the air guide plate 3 can be adjusted by the stepping motor 6, so that the outlet direction of the air outlet matches the angle of the air duct 9, avoiding the formation of turbulent flow groups due to the mismatch between the outlet direction of the fan body 2 and the air duct 9, effectively improving the operating state of the fan body 2, curbing the generation of air outlet vortices, improving the operating efficiency of the fan body 2, reducing operating noise, and reducing energy consumption. For example, a fan with an input power of 1100w can reduce its input power by about 100w and the noise by about 1dB(A) after installing this device, which can play a key role in reducing energy consumption and improving passenger comfort.

[0035] Example 2

[0036] On the basis of the above-mentioned embodiment 1, Figure 2 As shown, a controller is provided on the air outlet duct 1, and the controller is electrically connected to the stepper motor 6. A wind speed sensor 301 is provided on one of the air guide plates 3, and the wind speed sensor 301 is located in the middle position of the air guide plate 3, and the wind speed sensor 301 is electrically connected to the controller.

[0037] The working principle and beneficial effects of the above technical solution are as follows: the wind speed sensor 301 can monitor the wind speed at the air outlet in real time and transmit the monitored wind speed to the controller. When the monitored wind speed is less than the preset maximum wind speed, the controller controls the stepper motor 6 to work, thereby automatically adjusting the angle of the air guide plate 3 until the wind speed monitored by the wind speed sensor 301 reaches the preset maximum wind speed. At this time, no turbulent group will be generated in the air duct 9, ensuring that the fan body 2 can operate under the maximum wind speed state. The angle of the air guide plate 3 is automatically adjusted without manual operation. The wind speed at the air outlet of the fan body 2 can be sensed and the air outlet direction can be automatically adjusted so that the air outlet direction matches the inlet angle of the air duct 9, thereby improving the degree of automation of the device.

[0038] Example 3

[0039] Based on the first or second embodiment, the cross section of the connection position between the rotating shaft 5 and the cam 8 is a non-circular structure.

[0040] The working principle and beneficial effects of the above technical solution are as follows: the end of the rotating shaft 5 is connected to the cam 8, and the cross-section of the connection position is a non-circular structure. For example, a square hole is provided in the cam 8, and the end of the rotating shaft 5 is matched with the square hole to avoid axial sliding and realize accurate transmission of angular rotation.

[0041] Example 4

[0042] On the basis of Example 2, Figure 6 , Figure 7 As shown, a slide groove 10 is provided on one side of the connecting plate 4 close to the air guide plate 3 , a connecting strip 11 is slidably provided in the slide groove 10 , and one end of the connecting strip 11 is connected to the end of the air guide plate 3 .

[0043] The working principle and beneficial effects of the above technical solution are as follows: a connecting plate 4 is arranged between the air guide plate 3 and the rotating shaft 5, one end of the connecting plate 4 is fixedly connected to the rotating shaft 5, a slide groove 10 is arranged at the other end of the connecting plate 4, a connecting strip 11 is arranged at the end of the air guide plate 3, the connecting strip 11 is plugged into the slide groove 10, and the connection between the air guide plate 3 and the connecting plate 4 is realized. When one of the air guide plates 3 is damaged and needs to be replaced, the air guide plate 3 can be removed by simply pulling the air guide plate 3 outward, which is convenient for replacing the air guide plate 3. During installation, the connecting strip 11 is aligned with the slide groove 10 and inserted into the slide groove 10, so that the air guide plate 3 can be installed, thereby improving the disassembly and assembly efficiency.

[0044] Example 5

[0045] On the basis of Example 4, Figure 6 As shown, an open end is arranged at the front end of the slide groove 10, and a closed end is arranged at the rear end of the slide groove 10.

[0046] The working principle and beneficial effects of the above technical solution are as follows: the connecting strip 11 can be inserted into the slide groove 10 through the open end, and the closed end can block the connecting strip 11. When the connecting strip 11 contacts the closed end, the air guide plate 3 is installed in place, which is convenient for the staff to confirm the installation position of the air guide plate 3.

[0047] Example 6

[0048] On the basis of Example 4 or 5, Figure 5-Figure 7As shown, a horizontal slide 12 is arranged in the connecting plate 4, one end of the horizontal slide 12 is connected with the end of the slide groove 10 away from the wind guide plate 3, a guide hole 13 is arranged on the upper surface of the connecting plate 4, the lower end of the guide hole 13 is connected with the horizontal slide 12, a push block 14 is slidably arranged in the horizontal slide 12, the upper end of the push block 14 extends into the guide hole 13 and is slidably connected with the inner wall of the guide hole 13, a compression spring 15 is arranged on the side of the push block 14 away from the wind guide plate 3, one end of the compression spring 15 is connected with the end of the horizontal slide 12 away from the wind guide plate 3, a limiting column 16 is arranged on the side of the push block 14 close to the wind guide plate 3, a limiting hole 17 is arranged on the side of the connecting strip 11 close to the horizontal slide 12, and the limiting hole 17 is adapted to the limiting column 16.

[0049] The working principle and beneficial effects of the above technical solution are as follows: when installing the air guide plate 3, first push the push block 14 away from the slide slot 10, so that the limit column 16 slides into the horizontal slideway 12, and then insert the connecting strip 11 into the slide slot 10. When the rear end of the connecting strip 11 contacts the closed end of the slide slot 10, release the push block 14. Under the action of the compression spring 15, the push block 14 drives the limit column 16 to slide in the direction of the air guide plate 3. The limit column 16 is inserted into the limit hole 17 to prevent the air guide plate 3 from sliding back and forth in the connecting plate 4. A limit column 16 is provided at the front side of one end of the limit column 16 close to the air guide plate 3. The inclined surface is placed. When installing the air guide plate 3, the contact between the connecting strip 11 and the limiting column 16 can push the limiting column 16 to slide into the horizontal slide 12 until the limiting column 16 is stuck in the limiting hole 17, so that the air guide plate 3 is installed. During the installation process, there is no need for the staff to pull the pushing block 14, which makes the installation of the air guide plate 3 faster and more efficient. When removing the air guide plate 3, it is only necessary to push the pushing block 14 away from the air guide plate 3 so that the limiting columns 16 on both sides are separated from the corresponding limiting holes 17 respectively, and then the air guide plate 3 can be pulled outward, and the air guide plate 3 can be quickly removed, thereby improving the disassembly efficiency.

[0050] Example 7

[0051] On the basis of Example 6, Figure 7 As shown, a sliding hole 18 is vertically provided in the push block 14, a driving block 19 is slidably provided in the sliding hole 18, the lower end of the driving block 19 is connected to the bottom wall of the sliding hole 18 through a return spring 20, and the upper end of the driving block 19 extends to the outside of the guide hole 13;

[0052] A guiding inclined surface is provided on the upper end of the driving block 19 close to the air guide plate 3 .

[0053] The working principle and beneficial effects of the above technical solution are as follows: in order to facilitate pushing the push block 14, a sliding hole 18 is set in the push block 14, and a driving block 19 is slidably set in the sliding hole 18. The driving block 19 slides up and down along the sliding hole 18, and the upper end of the driving block 19 extends to the outside of the guide hole 13. By pushing the driving block 19, the push block 14 can be driven to slide in the horizontal slide 12, and the operation is more convenient and reliable.

[0054] Example 8

[0055] On the basis of Example 7, Figure 5 , Figure 8 As shown, two moving rods 21 are arranged in the air outlet duct 1, and the two moving rods 21 are arranged vertically. The upper and lower ends of the moving rod 21 are respectively connected to the upper and lower inner walls of the air outlet duct 1 for left and right sliding. The moving rod 21 is located on the side of the air guide plate 3 away from the air outlet. A sliding rod 22 is arranged on the front side wall of the moving rod 21. The sliding rod 22 is connected to the front side wall of the moving rod 21 for up and down sliding. Scrapers 23 are symmetrically arranged on the upper and lower sides of the air guide plate 3. The side of the scraper 23 close to the air guide plate 3 is in contact with the outer wall of the air guide plate 3. The rear ends of the two scrapers 23 are connected by a fixed plate 24. A connecting rod 25 is arranged between the fixed plate 24 and the sliding rod 22. One end of the connecting rod 25 is connected to the side wall of the fixed plate 24, and the other end of the connecting rod 25 is rotatably connected to the sliding rod 22 through a rotating shaft 26.

[0056] The working principle and beneficial effects of the above technical solution are as follows: two moving rods 21 are further arranged in the air outlet pipe 1, the two moving rods 21 are parallel to each other, the upper end of the moving rod 21 is slidably connected to the inner wall of the upper end of the air outlet pipe 1, the lower end of the moving rod 21 is slidably connected to the inner wall of the lower end of the air outlet pipe 1, and the moving rod 21 is located behind the air guide plate 3, a sliding rod 22 is arranged on the front side wall of the moving rod 21, the sliding rod 22 is slidably connected to the front side wall of the moving rod 21 up and down, the front side of the sliding rod 22 is rotatably connected to the connecting rod 25 through the rotating shaft 26, the connecting rod 25 is connected to the fixing plate 24, and the fixing plate 24 is fixed. Scrapers 23 are arranged at the upper and lower ends of the plate 24, and the upper and lower scrapers 23 are located at the upper and lower sides of the wind guide plate 3. When the angle of the wind guide plate 3 is adjusted, the scrapers 23 can move synchronously with the wind guide plate 3 and always remain at the upper and lower sides of the wind guide plate 3. The scrapers 23 drive the sliding rod 22 to slide in front of the moving rod 21 through the fixed plate 24 and the connecting rod 25; the upper surface of the connecting plate 4 is in the same plane as the upper surface of the wind guide plate 3, and the lower surface of the connecting plate 4 is in the same plane as the lower surface of the wind guide plate 3. When the wind guide plate 3 is removed, the two moving rods 21 are slid to both sides, and the moving rods 21 drive The sliding rod 22 moves, and the sliding rod 22 drives the fixed plate 24 to move through the connecting rod 25. The fixed plate 24 drives the scraper 23 to slide along the surface of the air guide plate 3. During the sliding process, the scraper 23 can scrape off impurities adhering to the surface of the air guide plate 3, improve the cleanliness of the air guide plate 3, reduce wind resistance, reduce the energy consumption of the fan body 2, and improve efficiency. The side wall of the scraper 23 is provided with an inclined contact surface, and the inclined contact surface is adapted to the guiding inclined surface. When the inclined contact surface of the scraper 23 contacts the guiding inclined surface of the side wall of the driving block 19, the scraper 23 can push the driving block 19 away from The air guide plate 3 moves in the direction of the driving block 19, and the pushing block 14 moves away from the air guide plate 3, so that the limiting column 16 and the limiting hole 17 are gradually separated until the upper end of the driving block 19 completely enters the guide hole 13, and then the scraper 23 continues to slide. After the scrapers 23 on both sides are in contact with the inner wall of the air outlet pipe 1, the scraper 23 can limit the driving block 19 in the sliding hole 18. The staff does not need to continuously push the driving block 19, and the air guide plate 3 can be easily removed from the connecting plate 4, which further improves the disassembly and assembly efficiency of the air guide plate 3 and reduces the labor intensity of the staff.

[0057] Example 9

[0058] On the basis of Example 8, Figure 8 , Fig. 9As shown, an installation cavity 27 is arranged inside the moving rod 21, and the installation cavity 27 passes through the side wall of the moving rod 21 near one end of the sliding rod 22, a partition 28 is arranged in the installation cavity 27, a through hole is arranged in the center of the partition 28, a push rod 29 is slidably arranged in the through hole, a friction block 30 is arranged at one end of the push rod 29 near the sliding rod 22, the friction block 30 contacts the side wall of the sliding rod 22, a connecting spring 31 is arranged outside the push rod 29, the friction block 30 is connected to the partition 28 through the connecting spring 31, the end of the push rod 29 away from the friction block 30 passes through the through hole and is provided with an electromagnet 32, the electromagnet 32 ​​is electrically connected to the controller, and a fixed block 33 is arranged at one end of the installation cavity 27 away from the sliding rod 22, and the fixed block 33 is made of magnetic metal.

[0059] The working principle and beneficial effects of the above technical solution are as follows: when the angle of the air guide plate 3 is adjusted, the controller controls the electromagnet 32 ​​to be energized. Since the fixed block 33 is made of magnetic metal, such as metal iron, when the electromagnet 32 ​​is energized to generate magnetism, the electromagnet 32 ​​is attracted to the fixed block 33 through magnetic force, and the electromagnet 32 ​​drives the friction block 30 to move through the push rod 29, so that the friction block 30 is separated from the outer wall of the sliding rod 22. At this time, the sliding rod 22 can slide smoothly on the side wall of the moving rod 21, which is convenient for the angle adjustment of the air guide plate 3, and the movement of the air guide plate 3 drives one of the scrapers 23 to move synchronously, the scraper 23 drives the sliding rod 22 to slide, the sliding rod 22 drives the remaining scrapers 23 to adjust the angle, and the scraper 23 drives the corresponding air guide plate 3 to rotate, and the angle of the air guide plate 3 is adjusted through multiple positions. , preventing the air guide plate 3 from being deformed or broken due to being too long, thereby extending the service life of the air guide plate 3; after the angle of the air guide plate 3 is adjusted, the controller controls the electromagnet 32 ​​to be powered off, and under the elastic force of the connecting spring 31, the friction block 30 is re-engaged with the side wall of the sliding rod 22, so that the sliding rod 22 is stably maintained on the side wall of the moving rod 21. When the airflow passes through the air guide plate 3, the scrapers 23 on the upper and lower sides of the air guide plate 3 can support and protect the air guide plate 3, thereby improving the impact resistance of the air guide plate 3, enhancing the reliability of the air guide plate 3, making the air guide plate 3 more stable, avoiding deformation of the air guide plate 3, and preventing the air outlet direction of the fan body 2 from not matching the air duct 9 due to the deformation of the air guide plate 3 to form a turbulent group, further improving the operation efficiency of the fan body 2, and extending the service life of the air guide plate 3.

[0060] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A device for automatically adjusting the air outlet direction of a fan, characterized in that: include: An air outlet duct (1) is arranged on one side of a fan body (2); a plurality of air guide plates (3) are arranged horizontally in the air outlet duct (1); the plurality of air guide plates (3) are arranged at equal intervals; connecting plates (4) are arranged at both ends of the air guide plates (3); a rotating shaft (5) is arranged at one end of the connecting plate (4) away from the air guide plates (3); the rotating shaft (5) is rotatably connected to the side wall of the air outlet duct (1); a stepping motor (6) is arranged on the outer wall of one side of the air outlet duct (1); the output end of the stepping motor (6) is connected to one of the rotating shafts (5); a connecting rod (7) is arranged on the outside of the other side of the air outlet duct (1); a plurality of cams (8) are arranged on the connecting rod (7); the plurality of cams (8) are distributed in an array along the length direction of the connecting rod (7); one end of the cam (8) is connected to the connecting rod (7); and the other end of the cam (8) is connected to the rotating shaft (5).

2. The automatic adjustment device for the air outlet direction of a fan according to claim 1, characterized in that: A controller is arranged on the air outlet pipe (1), and the controller is electrically connected to the stepper motor (6). A wind speed sensor (301) is arranged on one of the air guide plates (3), and the wind speed sensor (301) is located in the middle of the air guide plate (3). The wind speed sensor (301) is electrically connected to the controller.

3. The automatic adjustment device for the air outlet direction of a fan according to claim 1, characterized in that: The cross section of the connection position between the rotating shaft (5) and the cam (8) is a non-circular structure.

4. The automatic adjustment device for the air outlet direction of a fan according to claim 2, characterized in that: A sliding groove (10) is arranged on one side of the connecting plate (4) close to the air guide plate (3), a connecting strip (11) is slidably arranged in the sliding groove (10), and one end of the connecting strip (11) is connected to the end of the air guide plate (3).

5. The device for automatically adjusting the air outlet direction of a fan according to claim 4, characterized in that: An open end is arranged at the front end of the slide groove (10), and a closed end is arranged at the rear end of the slide groove (10).

6. The device for automatically adjusting the air outlet direction of a fan according to claim 4, characterized in that: A horizontal slideway (12) is arranged in the connecting plate (4), one end of the horizontal slideway (12) is connected with an end of the slide groove (10) away from the wind guide plate (3), a guide hole (13) is arranged on the upper surface of the connecting plate (4), the lower end of the guide hole (13) is connected with the horizontal slideway (12), a push block (14) is slidably arranged in the horizontal slideway (12), the upper end of the push block (14) extends into the guide hole (13) and is slidably connected with the inner wall of the guide hole (13), a compression spring (15) is arranged on the side of the push block (14) away from the wind guide plate (3), one end of the compression spring (15) is connected with an end of the horizontal slideway (12) away from the wind guide plate (3), a limiting column (16) is arranged on the side of the push block (14) close to the wind guide plate (3), a limiting hole (17) is arranged on the side of the connecting strip (11) close to the horizontal slideway (12), and the limiting hole (17) is matched with the limiting column (16).

7. The device for automatically adjusting the air outlet direction of a fan according to claim 6, characterized in that: A sliding hole (18) is vertically arranged in the push block (14), a driving block (19) is slidably arranged in the sliding hole (18), a lower end of the driving block (19) is connected to the bottom wall of the sliding hole (18) through a return spring (20), and an upper end of the driving block (19) extends to the outside of the guide hole (13).

8. The device for automatically adjusting the air outlet direction of a fan according to claim 7, characterized in that: A guiding inclined surface is arranged on one side of the upper end of the driving block (19) close to the air guide plate (3).

9. The device for automatically adjusting the air outlet direction of a fan according to claim 8, characterized in that: Two moving rods (21) are arranged in the air outlet pipe (1). The two moving rods (21) are arranged vertically. The upper and lower ends of the moving rods (21) are respectively connected to the inner walls of the upper and lower sides of the air outlet pipe (1) in a left-right sliding manner. The moving rod (21) is located on the side of the air guide plate (3) away from the air outlet. A sliding rod (22) is arranged on the front side wall of the moving rod (21). The sliding rod (22) is connected to the front side wall of the moving rod (21) in an up-down sliding manner. Scraping plates (23) are symmetrically arranged on the upper and lower sides of the air guide plate (3). The side of the scraping plates (23) close to the air guide plate (3) contacts the outer wall of the air guide plate (3). The rear ends of the two scraping plates (23) are connected by a fixing plate (24). A connecting rod (25) is arranged between the fixing plate (24) and the sliding rod (22). One end of the connecting rod (25) is connected to the side wall of the fixing plate (24), and the other end of the connecting rod (25) is connected to the sliding rod (22) in a rotating manner through a rotating shaft (26).

10. The device for automatically adjusting the air outlet direction of a fan according to claim 9, characterized in that: A mounting cavity (27) is arranged inside the moving rod (21), and one end of the mounting cavity (27) near the sliding rod (22) passes through the side wall of the moving rod (21), a partition (28) is arranged inside the mounting cavity (27), a through hole is arranged at the center of the partition (28), a push rod (29) is slidably arranged in the through hole, a friction block (30) is arranged at one end of the push rod (29) near the sliding rod (22), the friction block (30) contacts the side wall of the sliding rod (22), a connecting spring (31) is arranged outside the push rod (29), the friction block (30) is connected to the partition (28) through the connecting spring (31), one end of the push rod (29) away from the friction block (30) passes through the through hole and is provided with an electromagnet (32), the electromagnet (32) is electrically connected to the controller, and a fixing block (33) is arranged at one end of the mounting cavity (27) away from the sliding rod (22), and the fixing block (33) is made of magnetic metal.

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