An automatic air outlet direction adjustment device for a fan

Abstract

The present invention provides an automatic air outlet direction adjusting device for a fan, which relates to the technical field of fans and includes an air outlet pipe. The air outlet pipe is arranged on one side of the fan body. A number of air guide plates are horizontally arranged in the air outlet pipe, and the number of air guide plates is 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, and the rotating shaft is rotatably connected to the side wall of the air outlet pipe. A stepping motor is arranged on the outer wall of one side of the air outlet pipe, and the output end of the stepping motor is connected to one of the rotating shafts. A connecting rod is arranged outside the other side of the air outlet pipe, and a plurality of cams are arranged on the connecting rod. The plurality of cams are arranged 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 plates can guide the air flow and restrict the air flow direction. The angle of the air guide plates can be adjusted through the stepping motor, so that the air outlet direction of the air outlet is matched with the angle of the air duct, and the formation of a turbulent flow group caused by the mismatch between the air outlet direction of the fan body and the air duct is avoided.

Description

Technical Field

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

[0002] In the air conditioning system of rail transit vehicles, the air outlet of the fan and the air duct form an air conveying system, which is responsible for conveying the external air flow and the heated, cooled, and purified air flow to the interior of each carriage.

[0003] As disclosed in the Chinese patent with the authorization announcement number CN220229516U, a fresh air inlet structure with a built-in deflector belongs to the technical field of fresh air inlets, including an air inlet body. One end of the air inlet body is provided with an installation groove, and symmetric installation holes and limiting grooves are formed in the inner wall of the installation groove. A duct is provided at the central position of the air inlet body. One end of the air inlet body is inserted with a deflector. Symmetric sound-absorbing pads are arranged on the side surface of the deflector. One end of the deflector is fixedly connected with an installation frame, and fastening screws are inserted on the surface of the installation frame. For the fresh air inlet structure with the built-in deflector, through the provided installation frame, installation groove and limiting groove, the deflector and the air inlet body have the function of disassembly and combination, greatly reducing the manufacturing difficulty of the fresh air inlet, thereby reducing the production cost and improving the market competitiveness. And through the sound-absorbing pads arranged on both sides of the deflector, the wind noise can be silenced and reduced, greatly improving the sound insulation effect of the fresh air inlet.

[0004] Since the operating areas and usage positions of the vehicles determine different designs of the air ducts, and the sizes are limited and cannot be adjusted, it is necessary to conduct a matching test between the fan and the air duct before the fan is installed on the vehicle to verify whether the performance data such as the 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 is not matched with the angle of the air duct inlet. And the deflector of the above application is fixedly arranged on the air inlet body, and the angle of the deflector cannot be adjusted. When the air outlet direction of the fan is not matched with the angle of the air duct inlet, it will cause a turbulent flow group to form at the connection position between the air outlet and the air duct, resulting in phenomena such as too high overall noise, serious flow loss, low fan efficiency, and overcurrent. At this time, only by adjusting the fan design, such as increasing the operating frequency of the fan and re-designing the rotating components with larger sizes, can the overall performance requirements be met, which leads to too high energy consumption of the fan itself, repeated rework, repeated tests, and a significant extension of the product development cycle. Summary of the Invention

[0005] The present invention provides an automatic air outlet direction adjusting device for a fan to solve the technical problem that when the angle of the current deflector cannot be adjusted and the air outlet direction of the fan is not matched with the angle of the air duct inlet, a turbulent flow group will be formed at the connection position between the air outlet and the air duct. 1]

[0006] To solve the above technical problems, the present invention discloses an automatic adjusting device for the air outlet direction of a fan, including: an air outlet pipe, which is arranged on one side of the fan body. A number of air guiding plates are horizontally arranged in the air outlet pipe, and the number of air guiding plates are arranged at equal intervals. Connecting plates are arranged at the left and right ends of the air guiding plates. A rotating shaft is arranged at one end of the connecting plate away from the air guiding plate, and the rotating shaft is rotatably connected to the side wall of the air outlet pipe. A stepping motor is arranged on the outer wall of one side of the air outlet pipe, and the output end of the stepping motor is connected to one of the rotating shafts. A connecting rod is arranged outside the other side of the air outlet pipe, and a plurality of cams are arranged on the connecting rod. The plurality of cams are arranged 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 arranged on the air outlet pipe, and the controller is electrically connected to the stepping motor. An air speed sensor is arranged on one of the air guiding plates, and the air speed sensor is located at the middle position of the air guiding plate. The air 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 of a non-circular structure.

[0009] Preferably, a sliding groove is arranged on the side of the connecting plate close to the air guiding plate, and a connecting strip is slidably arranged in the sliding groove. One end of the connecting strip is connected to the end of the air guiding plate.

[0010] Preferably, the front end of the sliding groove is provided with an open end, and the rear end of the sliding groove is provided with a closed end.

[0011] Preferably, a horizontal sliding track is arranged in the connecting plate. One end of the horizontal sliding track is communicated with the end of the sliding groove away from the air guiding plate. A guiding hole is opened on the upper surface of the connecting plate, and the lower end of the guiding hole is communicated with the horizontal sliding track. A pushing block is slidably arranged in the horizontal sliding track, and the upper end of the pushing block extends into the guiding hole and is slidably connected to the inner wall of the guiding hole. A compression spring is arranged on the side of the pushing block away from the air guiding plate, and one end of the compression spring is connected to the end of the horizontal sliding track away from the air guiding plate. A limiting post is arranged on the side of the pushing block close to the air guiding plate, and a limiting hole is arranged on the side of the connecting strip close to the horizontal sliding track. The limiting hole is adapted to the limiting post.

[0012] Preferably, a sliding hole is vertically arranged in the pushing block, and 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 return spring, and the upper end of the driving block extends outside the guiding hole.

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

[0014] Preferably, two moving rods are arranged in the air outlet pipe. The two moving rods are arranged vertically. The upper and lower ends of the moving rods are respectively connected to the upper and lower inner walls of the air outlet pipe in a left-right sliding manner. The moving rods are located on the side of the air deflector away from the air outlet. A sliding rod is arranged on the front side wall of the moving rod. The sliding rod is connected to the front side wall of the moving rod in an up-down sliding manner. Scrapers are symmetrically arranged on the upper and lower sides of the air deflector. The side of the scraper close to the air deflector is in contact with the outer wall of the air deflector. The rear ends of the two scrapers are connected by a fixing plate. A connecting rod is arranged between the fixing plate and the sliding rod. One end of the connecting rod is connected to the side wall of the fixing 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 arranged inside the moving rod. One end of the installation cavity close to the sliding rod penetrates through the side wall of the moving rod. A partition plate is arranged in the installation cavity. A through hole is arranged at the center of the partition plate. A push rod is slidably arranged in the through hole. A friction block is arranged at one end of the push rod close to the sliding rod. The friction block is in contact with the side wall of the sliding rod. A connecting spring is arranged outside the push rod. The friction block is connected to the partition plate through the connecting spring. One end of the push rod away from the friction block passes through the through hole and an electromagnet is arranged. The electromagnet is electrically connected to the controller. A fixing block is arranged at one end of the installation cavity away from the sliding rod. The fixing block is made of magnetic metal.

[0016] The technical solution of the present invention has the following advantages: The present invention provides an automatic air outlet direction adjusting device for a fan, which relates to the technical field of fans and includes an air outlet pipe. The air outlet pipe is arranged on one side of the fan body. A plurality of air deflectors are horizontally arranged in the air outlet pipe. The plurality of air deflectors are arranged at equal intervals. Connecting plates are arranged at the left and right ends of the air deflector. One end of the connecting plate away from the air deflector is provided with a rotating shaft. The rotating shaft is rotatably connected to the side wall of the air outlet pipe. 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 to one of the rotating shafts. A connecting rod is arranged outside the other side of the air outlet pipe. A plurality of cams are arranged on the connecting rod. The plurality of cams are arranged 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 deflector can guide the air flow and restrict the air flow direction. The angle of the air deflector can be adjusted through the stepping motor, so that the air outlet direction of the air outlet is matched with the angle of the air duct, and the formation of a turbulent flow group caused by the mismatch between the air outlet direction of the fan body air outlet and the air duct is avoided.

[0017] Other features and advantages of the present invention will be described in the following description, and, in part, will be obvious from the description, or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the devices specifically pointed out in the written description and the accompanying drawings of the specification.

[0018] The technical solution of the present invention will be further described in detail below through the drawings and embodiments. 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 to the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of an automatic air outlet direction adjusting device for a blower of the present invention;

[0021] Figure 2 It is a schematic diagram of another perspective of an automatic air outlet direction adjusting device for a blower of the present invention;

[0022] Figure 3 It is a schematic diagram of the air flow in the front air duct before adjusting the air outlet direction in the prior art;

[0023] Figure 4 It is a schematic diagram of the air flow in the air duct after adjusting the air outlet direction in the present invention;

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

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

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

[0027] Figure 8 For the present invention Figure 5 The partial cross-sectional view at B-B;

[0028] Figure 9 For the present invention Figure 8 The enlarged view of the structure at C.

[0029] In the figure: 1. Air outlet pipe; 2. Blower body; 3. Air deflector; 301. Wind speed sensor; 4. Connecting plate; 5. Rotating shaft; 6. Stepper motor; 7. Connecting rod; 8. Cam; 9. Air duct; 10. Chute; 11. Connecting strip; 12. Horizontal slideway; 13. Guide hole; 14. Pusher block; 15. Compression spring; 16. Limit post; 17. Limit hole; 18. Sliding hole; 19. Driving block; 20. Return spring; 21. Moving rod; 22. Sliding rod; 23. Scraper; 24. Fixed plate; 25. Connecting rod; 26. Rotating shaft; 27. Installation cavity; 28. Partition board; 29. Push rod; 30. Friction block; 31. Connecting spring; 32. Electromagnet; 33. Fixed block. Detailed implementation manners

[0030] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0031] In addition, in the present invention, descriptions such as "first", "second", etc. are for descriptive purposes only, and do not particularly refer to the order or sequence. Nor are they used to limit the present invention. They are merely used to distinguish components or operations described with the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions and technical features between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions 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] Embodiment 1

[0033] An embodiment of the present invention provides an automatic air outlet direction adjusting device for a fan, as Figures 1-9 shown, including: an air outlet pipe 1, the air outlet pipe 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 pipe 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 pipe 1, a stepping motor 6 is arranged on the outer wall of one side of the air outlet pipe 1, the output end of the stepping motor 6 is connected to one of the rotating shafts 5, a connecting rod 7 is arranged outside the other side of the air outlet pipe 1, a plurality of cams 8 are arranged on the connecting rod 7, the plurality of cams 8 are arranged 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. One end of the air outlet pipe 1 away from the fan body 2 is connected to the air duct 9. An air outlet is arranged at the outlet of the air outlet pipe 1. The air flow generated by the fan body 2 flows through the air outlet to the air duct 9. A wind guide plate 3 is arranged in the air outlet pipe 1. The wind guide plate 3 can guide the air flow and restrict the air flow direction, so that the air outlet maintains a stable air outlet direction. The wind guide plate 3 is connected to the rotating shaft 5 through the connecting plate 4. One of the rotating shafts 5 is connected to the output end of the stepping motor 6. Cam 8 is arranged at the end of the rotating shaft 5 far from the stepping motor 6. A plurality of cams 8 are connected by a connecting rod 7. The connecting rod 7 connects a plurality of cams 8 in series. The rotation of the stepping motor 6 can drive the rotation of the rotating shaft 5. The rotation of the rotating shaft 5 drives the wind guide plate 3 to rotate through the connecting plate 4. The rotation of the wind guide plate 3 drives the connecting plate 4 and the rotating shaft 5 on the other side to rotate, 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 wind guide plates 3 to rotate in the same direction. The angle of the wind guide plate 3 can be adjusted by the stepping motor 6, so that the air outlet direction of the air outlet is matched with the angle of the air duct 9, avoiding the formation of a turbulent flow group due to the mismatch between the air 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 eddy currents, improving the operating efficiency of the fan body 2, reducing the operating noise, and reducing the energy consumption. For example, for a fan with an input power of 1100w, after installing this device, its input power can be reduced by about 100w, and the noise is reduced by about 1dB(A), which can play a key role in reducing energy consumption and improving the comfort of passengers.

[0035] Embodiment 2

[0036] On the basis of the above Embodiment 1, as Figure 2 shown, a controller is arranged on the air outlet pipe 1. The controller is electrically connected to the stepping motor 6. A wind speed sensor 301 is arranged on one of the wind guide plates 3. The wind speed sensor 301 is located at the middle position of the wind guide plate 3. 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 stepping motor 6 to work, thereby automatically adjusting the angle of the wind 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 flow group will be generated in the air duct 9, ensuring that the fan body 2 can operate at the maximum wind speed state. The angle of the wind guide plate 3 is automatically adjusted without manual operation, which can sense the wind speed at the air outlet of the fan body 2 and automatically adjust the air outlet direction, so that the air outlet direction is matched with the angle of the air duct 9 entrance, improving the automation degree of the device.

[0038] Example 3

[0039] On the basis of Example 1 or 2, the cross-section of the connection position between the rotating shaft 5 and the cam 8 is of 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 of a non-circular structure. For example, a square hole is provided in the cam 8, and the end of the rotating shaft 5 is adapted to the square hole to avoid axial sliding and achieve accurate transmission of angular rotation.

[0041] Example 4

[0042] On the basis of Example 2, as Figure 6 , Figure 7 shown, a chute 10 is provided on the side of the connecting plate 4 close to the air deflector 3, and a connecting bar 11 is slidably arranged in the chute 10, and one end of the connecting bar 11 is connected to the end of the air deflector 3.

[0043] The working principle and beneficial effects of the above technical solution are as follows: A connecting plate 4 is provided between the air deflector 3 and the rotating shaft 5. One end of the connecting plate 4 is fixedly connected to the rotating shaft 5, a chute 10 is provided at the other end of the connecting plate 4, a connecting bar 11 is provided at the end of the air deflector 3, and the connecting bar 11 is inserted into the chute 10, realizing the connection between the air deflector 3 and the connecting plate 4. When one of the air deflectors 3 is damaged and needs to be replaced, only by pulling the air deflector 3 outwards can the air deflector 3 be removed, facilitating the replacement of the air deflector 3. During installation, align the connecting bar 11 with the chute 10 and insert it into the chute 10, then the installation of the air deflector 3 can be achieved, improving the disassembly and assembly efficiency.

[0044] Example 5

[0045] On the basis of Example 4, as Figure 6 shown, the front end of the chute 10 is provided with an open end, and the rear end of the chute 10 is provided with a closed end.

[0046] The working principle and beneficial effects of the above technical solution are as follows: The connecting bar 11 can be inserted into the chute 10 through the open end, and the closed end can block the connecting bar 11. When the connecting bar 11 contacts the closed end, the air deflector 3 is installed in place, facilitating the staff to confirm the installation position of the air deflector 3.

[0047] Example 6

[0048] On the basis of Example 4 or 5, as Figures 5-7As shown in the figure, a horizontal slideway 12 is arranged inside the connecting plate 4. One end of the horizontal slideway 12 communicates with one end of the chute 10 away from the air deflector 3. A guiding hole 13 is opened on the upper surface of the connecting plate 4. The lower end of the guiding hole 13 communicates with the horizontal slideway 12. A push block 14 is slidably arranged inside the horizontal slideway 12. The upper end of the push block 14 extends into the guiding hole 13 and is slidably connected with the inner wall of the guiding hole 13. A compression spring 15 is arranged on one side of the push block 14 away from the air deflector 3. One end of the compression spring 15 is connected with one end of the horizontal slideway 12 away from the air deflector 3. A limiting post 16 is arranged on one side of the push block 14 close to the air deflector 3. A limiting hole 17 is arranged on one side of the connecting bar 11 close to the horizontal slideway 12. The limiting hole 17 is adapted to the limiting post 16.

[0049] The working principle and beneficial effects of the above technical solution are as follows: When installing the air deflector 3, first push the push block 14 in the direction away from the chute 10, so that the limiting post 16 slides into the horizontal slideway 12. Then insert the connecting bar 11 into the chute 10. When the rear end of the connecting bar 11 contacts the closed end of the chute 10, release the push block 14. Under the action of the compression spring 15, the push block 14 drives the limiting post 16 to slide in the direction of the air deflector 3, and the limiting post 16 is inserted into the limiting hole 17, preventing the air deflector 3 from sliding back and forth in the connecting plate 4. An inclined surface is arranged on the front side of the end of the limiting post 16 close to the air deflector 3. When installing the air deflector 3, the contact between the connecting bar 11 and the limiting post 16 can push the limiting post 16 to slide into the horizontal slideway 12 until the limiting post 16 is stuck in the limiting hole 17, realizing the installation of the air deflector 3. During the installation process, there is no need for the staff to pull the push block 14, making the installation of the air deflector 3 more rapid and efficient. When removing the air deflector 3, only need to push the push block 14 in the direction away from the air deflector 3, so that the limiting posts 16 on both sides are separated from the corresponding limiting holes 17 respectively, and then the air deflector 3 can be pulled outwards, quickly removing the air deflector 3 and improving the disassembly efficiency.

[0050] Embodiment 7

[0051] On the basis of Embodiment 6, as Figure 7 shown, a sliding hole 18 is vertically arranged inside the push block 14. A driving block 19 is slidably arranged inside the sliding hole 18. The lower end of the driving block 19 is connected with the bottom wall of the sliding hole 18 through a return spring 20. The upper end of the driving block 19 extends outside the guiding hole 13;

[0052] A guiding inclined surface is arranged on one side of the upper end of the driving block 19 close to the air deflector 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 arranged inside the push block 14. A driving block 19 is slidably arranged inside the sliding hole 18. The driving block 19 slides up and down along the sliding hole 18. The upper end of the driving block 19 extends outside the guiding hole 13. By pushing the driving block 19, the push block 14 can be driven to slide inside the horizontal slideway 12, and the operation is more convenient and reliable.

[0054] Example 8

[0055] On the basis of Example 7, as Figure 5 、 Figure 8 shown, 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 rod 21 are respectively connected with the left and right inner walls of the upper and lower sides of the air outlet pipe 1 in a sliding manner. The moving rod 21 is located on the side of the air guiding 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 with the front side wall of the moving rod 21 in a sliding manner up and down. Scrapers 23 are symmetrically arranged on the upper and lower sides of the air guiding plate 3. One side of the scraper 23 close to the air guiding plate 3 is in contact with the outer wall of the air guiding plate 3. The rear ends of the two scrapers 23 are connected through 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 with the side wall of the fixing plate 24, and the other end of the connecting rod 25 is rotatably connected with 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 ends of the moving rods 21 are slidably connected to the inner wall of the upper end of the air outlet pipe 1, and the lower ends of the moving rods 21 are slidably connected to the inner wall of the lower end of the air outlet pipe 1. And the moving rods 21 are located behind the air guiding 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 a connecting rod 25 through a rotating shaft 26. The connecting rod 25 is connected to a fixing plate 24. Scrapers 23 are arranged at the upper and lower ends of the fixing plate 24. The upper and lower two scrapers 23 are located on the upper and lower sides of the air guiding plate 3. When the angle of the air guiding plate 3 is adjusted, the scrapers 23 can move synchronously with the air guiding plate 3 and always remain on the upper and lower sides of the air guiding plate 3. The scrapers 23 drive the sliding rod 22 to slide on the front side of the moving rod 21 through the fixing 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 air guiding plate 3, and the lower surface of the connecting plate 4 is in the same plane as the lower surface of the air guiding plate 3. When removing the air guiding plate 3, slide the two moving rods 21 to both sides. The moving rods 21 drive the sliding rod 22 to move. The sliding rod 22 drives the fixing plate 24 to move through the connecting rod 25. The fixing plate 24 drives the scraper 23 to slide along the surface of the air guiding plate 3. During the sliding process, the scraper 23 can scrape off the impurities adhered to the surface of the air guiding plate 3, improve the cleanliness of the air guiding plate 3, reduce the wind resistance, reduce the energy consumption of the fan body 2, improve the efficiency. An inclined contact surface is arranged on the side wall of the scraper 23, 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 on the side wall of the driving block 19, the scraper 23 can push the driving block 19 to move away from the air guiding plate 3. The driving block 19 drives the push block 14 to move away from the air guiding 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 guiding hole 13. Then the scraper 23 continues to slide. After the scrapers 23 on both sides contact the inner wall of the air outlet pipe 1, the scraper 23 can limit the driving block 19 in the sliding hole 18. Without the need for the staff to continuously push the driving block 19, the air guiding plate 3 can be easily taken out from the connecting plate 4, further improving the disassembly and assembly efficiency of the air guiding plate 3 and reducing the labor intensity of the staff.

[0057] Example 9

[0058] On the basis of Example 8, as Figure 8 、 Figure 9As shown in the figure, an installation cavity 27 is provided inside the moving rod 21. One end of the installation cavity 27 close to the sliding rod 22 penetrates through the side wall of the moving rod 21. A partition plate 28 is provided in the installation cavity 27. A through hole is provided at the center of the partition plate 28. A push rod 29 is slidably arranged in the through hole. A friction block 30 is provided at one end of the push rod 29 close to the sliding rod 22. The friction block 30 is in contact with 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 plate 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 an electromagnet 32 is provided. The electromagnet 32 is electrically connected to the controller. A fixing block 33 is provided at one end of the installation cavity 27 away from the sliding rod 22. The fixing block 33 is made of magnetic metal.

[0059] The working principle and beneficial effects of the above technical solution are as follows: When the air deflector 3 is adjusted in angle, the controller controls the electromagnet 32 to be energized. Since the fixing block 33 is made of magnetic metal, such as made of metal iron, when the electromagnet 32 is energized to generate magnetism, the electromagnet 32 is attracted to the fixing block 33 by magnetic force. 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 adjusting the angle of the air deflector 3. Moreover, the movement of the air deflector 3 drives one of the scraping plates 23 to move synchronously. The scraping plate 23 drives the sliding rod 22 to slide. The sliding rod 22 drives the other scraping plates 23 to adjust the angle. The scraping plate 23 drives the corresponding air deflector 3 to rotate. The angle of the air deflector 3 is adjusted at multiple positions to prevent the air deflector 3 from being too long and deforming or breaking, and the service life of the air deflector 3 is improved; After the angle of the air deflector 3 is adjusted, the controller controls the electromagnet 32 to be powered off. Under the elastic force of the connecting spring 31, the friction block 30 abuts against the side wall of the sliding rod 22 again, so that the sliding rod 22 is stably maintained on the side wall of the moving rod 21. When the air flow passes through the air deflector 3, the scraping plates 23 on both the upper and lower sides of the air deflector 3 can play a supporting and protecting role for the air deflector 3, improving the impact resistance of the air deflector 3, enhancing the reliability of the air deflector 3, making the air deflector 3 more stable, avoiding the deformation of the air deflector 3, preventing the air outlet direction of the air outlet of the fan body 2 from not matching the air duct 9 due to the deformation of the air deflector 3 and forming a turbulence group, further improving the operating efficiency of the fan body 2, and extending the service life of the air deflector 3.

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship 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 should not be construed as a limitation on the present invention.

[0061] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, 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, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the examples shown and described here.

Claims

1. An automatic adjusting device for the air outlet direction of a fan, characterized in that Comprising: An air outlet pipe (1), the air outlet pipe (1) is arranged on one side of the fan body (2). A number of air guide plates (3) are horizontally arranged in the air outlet pipe (1), and the number 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 plate (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 pipe (1). A stepper motor (6) is arranged on the outer wall of one side of the air outlet pipe (1). The output end of the stepper motor (6) is connected to one of the rotating shafts (5). A connecting rod (7) is arranged outside the other side of the air outlet pipe (1). A number of cams (8) are arranged on the connecting rod (7). The number of cams (8) are arranged 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); A controller is arranged on the air outlet pipe (1), and the controller is electrically connected to the stepper motor (6). An air speed sensor (301) is arranged on one of the air guide plates (3). The air speed sensor (301) is located at the middle position of the air guide plate (3). The air speed sensor (301) is electrically connected to the controller. The air speed sensor (301) is used to monitor the air speed at the air outlet in real time and transmit the monitored air speed to the controller. When the monitored air speed is less than the preset maximum air speed, the controller controls the stepper motor (6) to work, so as to automatically adjust the angle of the air guide plate (3) to make the air outlet direction of the air outlet match the angle of the air duct (9), and the air speed monitored by the air speed sensor (301) reaches the preset maximum air speed; 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 slidably connected to the left and right inner walls of the upper and lower sides of the air outlet pipe (1). The moving rods (21) are 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 slidably connected to the front side wall of the moving rod (21) up and down. Scraping plates (23) are symmetrically arranged on the upper and lower sides of the air guide plate (3). The side of the scraping plate (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 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 rotatably connected to the sliding rod (22) through a rotating shaft (26); An installation cavity (27) is provided inside the moving rod (21). One end of the installation cavity (27) close to the sliding rod (22) penetrates through the side wall of the moving rod (21). A partition plate (28) is provided in the installation cavity (27). A through hole is provided at the center of the partition plate (28). A push rod (29) is slidably arranged in the through hole. A friction block (30) is provided at one end of the push rod (29) close to 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 plate (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 an electromagnet (32) is provided. The electromagnet (32) is electrically connected to the controller. A fixed block (33) is provided at one end of the installation cavity (27) away from the sliding rod (22). The fixed block (33) is made of magnetic metal.

2. The automatic air outlet direction adjusting device 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 of a non-circular structure.

3. The automatic air outlet direction adjusting device of a fan according to claim 1, wherein, A chute (10) is provided on one side of the connecting plate (4) close to the air deflector (3). A connecting bar (11) is slidably arranged in the chute (10). One end of the connecting bar (11) is connected to the end of the air deflector (3).

4. The automatic air outlet direction adjusting device of a fan according to claim 3, characterized in that, The front end of the chute (10) is provided with an open end, and the rear end of the chute (10) is provided with a closed end.

5. The automatic air outlet direction adjusting device of a fan according to claim 3, characterized in that, A horizontal slideway (12) is provided inside the connecting plate (4). One end of the horizontal slideway (12) communicates with one end of the chute (10) away from the air deflector (3). A guiding hole (13) is opened on the upper surface of the connecting plate (4). The lower end of the guiding hole (13) communicates 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 guiding hole (13) and is slidably connected to the inner wall of the guiding hole (13). A compression spring (15) is provided on one side of the push block (14) away from the air deflector (3). One end of the compression spring (15) is connected to one end of the horizontal slideway (12) away from the air deflector (3). A limiting post (16) is provided on one side of the push block (14) close to the air deflector (3). A limiting hole (17) is provided on one side of the connecting bar (11) close to the horizontal slideway (12). The limiting hole (17) is adapted to the limiting post (16).

6. The automatic air outlet direction adjusting device of a fan according to claim 5, wherein, A sliding hole (18) is vertically provided in the push block (14). A driving block (19) is slidably arranged 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). The upper end of the driving block (19) extends outside the guiding hole (13).

7. An automatic air outlet direction adjusting device for a fan according to claim 6, characterized in that, A guiding inclined surface is provided on one side of the upper end of the driving block (19) close to the air deflector (3).

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