A self-cleaning fan

Abstract

The present invention relates to the technical field of fans. The present invention discloses a self-cleaning fan, which includes a base and a fan housing. A channel is formed in the support box, and a self-cleaning mechanism is fixed in the channel. The first rotating shaft penetrates through the channel, and the self-cleaning mechanism penetrates through the bottom of the support box and communicates with the driving and unfolding mechanism. For this self-cleaning fan, when cleaning the dust and impurities in the through holes, it is necessary to rotate the fan housing to a vertical state and make the through holes to be cleaned face down. When the fan housing rotates, one of the extrusion rods rotates and extrudes the corresponding movable block, and the corresponding moving plate and two third pistons move downward, and two of the second pistons move, thereby pushing open the rotating plate. The rotating plate rotates 90 degrees, so that the cleaning ejector pin is aligned with the through hole. Then two of the first pistons move, and the cleaning ejector pin moves together with the movable plate and extends into the through hole, which is convenient for automatically ejecting the dust and impurities in the through hole. At the same time, the scraping plate moves upward together with the fourth piston, and the scraping plate can automatically scrape off the impurities.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, and specifically to a self-cleaning fan. Background Art

[0002] Fans are widely used for ventilation, dust removal in factories, mines, tunnels, cooling towers, vehicles, ships and buildings, and ventilation and air draft for boilers and industrial furnaces.

[0003] During the ventilation process of existing fans, dust and impurities mixed in the air are likely to block the ventilation holes on the outer shell, which will affect the ventilation effect. Moreover, generally, manual cleaning can only remove the dust and impurities attached to the surface of the ventilation holes, and it is difficult to clean the dust and impurities inside the through holes thoroughly. In view of the above problems, improvements need to be made to the existing equipment. Summary of the Invention

[0004] The purpose of the present invention is to provide a self-cleaning fan to solve the problems in the above background art that during the ventilation process of existing fans, dust and impurities mixed in the air are likely to block the ventilation holes on the outer shell, which will affect the ventilation effect, and generally, manual cleaning can only remove the dust and impurities attached to the surface of the ventilation holes, and it is difficult to clean the dust and impurities inside the through holes thoroughly.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A self-cleaning fan, including a base and a fan housing. On both sides of the upper end surface of the base, support plates are symmetrically fixed. On the outer end surfaces of the support plates, support boxes are fixed. Inside the support box, a first rotating shaft is rotatably connected. On the outer side of the first rotating shaft, a pressing rod is fixed. The fan housing is rotatably connected between the two support plates through the first rotating shaft. On both sides of the fan housing, through holes are symmetrically opened. On the inner top of the fan housing, a bracket is fixed. On the bracket, a third rotating shaft is rotatably connected. At both ends of the third rotating shaft, fan blades are symmetrically fixed.

[0006] On both sides of the inner top of the fan housing and on both sides of the inner bottom of the fan housing, grooves are opened. Inside the grooves, a driving and unfolding mechanism is arranged. The driving and unfolding mechanism includes a rotating plate, which is rotatably connected inside the groove. The rotating plate is connected to the fan housing through a volute spring. The inner side of the rotating plate is connected to a movable plate through a tension spring. On the inner end surface of the movable plate, a cleaning ejector pin is fixed.

[0007] Inside the support box, a channel is opened. Inside the channel, a self-cleaning mechanism is fixed. The first rotating shaft penetrates through the channel. The self-cleaning mechanism penetrates through the bottom of the support box and is connected to the driving and unfolding mechanism.

[0008] Preferably, on the outer side of one of the support boxes, a first motor is fixed, and the output end of the first motor is connected to one of the first rotating shafts.

[0009] Preferably, a second motor is fixed to the bottom of the blower housing, and the top of the second motor is connected to a second rotating shaft. The second rotating shaft penetrates through the bottom of the bracket and is connected to a first bevel gear. One side of the first bevel gear is meshed with a second bevel gear, and the second bevel gear is fixed to the outside of a third rotating shaft.

[0010] Preferably, the through holes are distributed in a rectangular array on both sides of the blower housing, and the cleaning ejector pins are distributed in a rectangular array on the movable plate.

[0011] Preferably, a first oil cylinder is fixed in the groove, and a first piston is slidably connected in the first oil cylinder. The rotating plate is fixed to the inner end of the first oil cylinder. A second oil cylinder is fixed in the groove, and the second oil cylinder is connected to the first oil cylinder through a hose. A second piston is slidably connected in the second oil cylinder, and a top support column is fixed to the inner end face of the second piston.

[0012] Preferably, the self-cleaning mechanism includes a compression spring, and the compression spring is fixed to the inner bottom of the channel. The top of the compression spring is fixed with a movable block.

[0013] Preferably, a movable plate is fixed to the bottom of the movable block. On both sides of the inner bottom of the support box, third oil cylinders are symmetrically fixed, and a third piston is slidably connected in each third oil cylinder. The third pistons are symmetrically fixed to both sides of the bottom of the movable plate.

[0014] Preferably, an oil groove is formed in the base. One of the third oil cylinders in each support box is communicated with the same oil groove through a first connecting pipe, and the other third oil cylinder in each support box is connected to two hoses through a second connecting pipe.

[0015] Preferably, a fourth piston is slidably connected in the oil groove, and a scraping plate is fixed to the upper end face of the fourth piston. The scraping plate penetrates through the upper end face of the base.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The self-cleaning fan can achieve the purpose of self-cleaning through the coordinated use of the extrusion rod, fan housing, through-hole, fan blade, turntable, first piston, movable plate, cleaning ejector pin, second piston, movable block, moving plate, third piston, fourth piston, and scraper. When the fan blade draws air, the through-hole can ventilate. When cleaning the dust and impurities in the through-hole, the fan housing needs to be rotated to the vertical state and the through-hole to be cleaned should face downward. When the fan housing rotates, one of the extrusion rods rotates and squeezes the corresponding movable block, causing the corresponding moving plate and two third pistons to move downward, and two of the second pistons to move, thereby pushing open the turntable. The turntable rotates 90 degrees, aligning the cleaning ejector pin with the through-hole. Then, two of the first pistons move, and the cleaning ejector pin moves with the movable plate and extends into the through-hole, facilitating the automatic ejection of the dust and impurities in the through-hole. At the same time, the scraper moves upward with the fourth piston, and the scraper can automatically scrape off the impurities.

[0018] 2. The self-cleaning fan can achieve the purpose of adjusting the air-drawing angle through the coordinated use of the fan housing, second rotating shaft, first bevel gear, second bevel gear, third rotating shaft, and fan blade. When the second rotating shaft rotates, the third rotating shaft and two fan blades rotate under the driving action of the first bevel gear and the second bevel gear, facilitating automatic air-drawing. The fan housing can rotate, facilitating the adjustment of the air-drawing angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a right-side perspective structural schematic diagram of the present invention;

[0020] Figure 2 is a left-side perspective structural schematic diagram of the present invention;

[0021] Figure 3 is a front-view sectional structural schematic diagram of the present invention;

[0022] Figure 4 is a front-view external structural schematic diagram of the present invention;

[0023] Figure 5 is of the present invention Figure 3 is an enlarged structural schematic diagram at A in;

[0024] Figure 6 is of the present invention Figure 4 is an enlarged structural schematic diagram at B in;

[0025] Figure 7 is a connection structural schematic diagram of the first rotating shaft and the extrusion rod of the present invention;

[0026] Figure 8 is a connection structural schematic diagram of the turntable, first oil cylinder, movable plate, tension spring, and cleaning ejector pin of the present invention;

[0027] Figure 9Schematic connection diagram of the support box, the first rotating shaft, the extrusion rod, the channel and the self-cleaning mechanism of the present invention.

[0028] In the figure: 1, base; 2, support plate; 3, support box; 4, first motor; 5, first rotating shaft; 6, extrusion rod; 7, fan housing; 8, through hole; 9, second motor; 10, second rotating shaft; 11, bracket; 12, first bevel gear; 13, second bevel gear; 14, third rotating shaft; 15, fan blade; 16, groove; 17, driving deployment mechanism; 1701, rotating plate; 1702, first oil cylinder; 1703, first piston; 1704, movable plate; 1705, tension spring; 1706, cleaning ejector pin; 1707, hose; 1708, second oil cylinder; 1709, second piston; 1710, top support column; 18, channel; 19, self-cleaning mechanism; 1901, compression spring; 1902, movable block; 1903, moving plate; 1904, third oil cylinder; 1905, third piston; 1906, first connecting pipe; 1907, second connecting pipe; 1908, oil sump; 1909, fourth piston; 1910, scraper. Detailed implementation mode

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical staff in the art without creative work belong to the protection scope of the present invention.

[0030] Please refer to Figures 1 to 9 , the present invention provides a technical solution: a self-cleaning fan, including a base 1 and a fan housing 7. On both sides of the upper end face of the base 1, support plates 2 are symmetrically fixed. On the outer end faces of the support plates 2, a support box 3 is fixed. Inside the support box 3, a first rotating shaft 5 is rotatably connected. On the outside of the first rotating shaft 5, an extrusion rod 6 is fixed. The fan housing 7 is rotatably connected between the two support plates 2 through the first rotating shaft 5. Through holes 8 are symmetrically opened on both sides of the fan housing 7. On the inner top of the fan housing 7, a bracket 11 is fixed. On the bracket 11, a third rotating shaft 14 is rotatably connected. At both ends of the third rotating shaft 14, fan blades 15 are symmetrically fixed.

[0031] On both sides of the inner top of the fan housing 7 and on both sides of the inner bottom of the fan housing 7, grooves 16 are opened. Inside the grooves 16, a driving deployment mechanism 17 is provided. The driving deployment mechanism 17 includes a rotating plate 1701. The rotating plate 1701 is rotatably connected inside the groove 16. The rotating plate 1701 is connected to the fan housing 7 through a scroll spring. The inner side of the rotating plate 1701 is connected to a movable plate 1704 through a tension spring 1705. On the inner end face of the movable plate 1704, a cleaning ejector pin 1706 is fixed.

[0032] A channel 18 is defined in the support box 3 , a self-cleaning mechanism 19 is fixed in the channel 18 , the first rotating shaft 5 passes through the channel 18 , the self-cleaning mechanism 19 passes through the bottom of the support box 3 and is in communication with the driving and unfolding mechanism 17 .

[0033] In this embodiment, Figure 1 、 Figure 4 and Figure 7 As shown, a first motor 4 is fixed to the outside of one of the support boxes 3, and the output end of the first motor 4 is connected to one of the first rotating shafts 5. One of the first rotating shafts 5 can rotate under the action of the first motor 4, thereby driving the fan cover 7 and the other first rotating shaft 5 to rotate, making it convenient to adjust the angle of the fan cover 7.

[0034] In this embodiment, Figure 3 As shown, a second motor 9 is fixed to the bottom of the fan cover 7, and the top of the second motor 9 is connected to the second rotating shaft 10. The second rotating shaft 10 passes through the bottom of the bracket 11 and is connected to the first bevel gear 12, and one side of the first bevel gear 12 is meshed with the second bevel gear 13. The second bevel gear 13 is fixed to the outside of the third rotating shaft 14. The second rotating shaft 10 can rotate under the action of the second motor 9, thereby driving the first bevel gear 12 to rotate, thereby driving the second bevel gear 13 to rotate, and the third rotating shaft 14 and the two fan blades 15 rotate, which is convenient for automatic exhaust. Using two fan blades 15 at the same time can make the exhaust intensity greater.

[0035] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 and Figure 8 As shown, the through holes 8 are distributed in a rectangular array on both sides of the fan housing 7, and the cleaning ejectors 1706 are distributed in a rectangular array on the movable plate 1704. The through holes 8 can be used for ventilation, and the cleaning ejectors 1706 can be used to eject dust and impurities in the through holes 8, thereby achieving a self-cleaning effect.

[0036] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 and Figure 8As shown, a first oil cylinder 1702 is fixed in the groove 16, and a first piston 1703 is slidably connected in the first oil cylinder 1702, a rotating plate 1701 is fixed to the inner end of the first oil cylinder 1702, a second oil cylinder 1708 is fixed in the groove 16, and the second oil cylinder 1708 is connected to the first oil cylinder 1702 through a hose 1707, a second piston 1709 is slidably connected in the second oil cylinder 1708, and a top support column 1710 is fixed to the inner end surface of the second piston 1709. Before cleaning the through hole 8, The fan cover 7 needs to be rotated 90 degrees and the through hole 8 to be cleaned needs to face downward. At the same time, the corresponding second piston 1709 moves, thereby driving the support column 1710 to move. The support column 1710 pushes open the rotating plate 1701, and the rotating plate 1701 rotates 90 degrees. The cleaning ejector pin 1706 on the corresponding movable plate 1704 corresponds to the through hole 8 to be cleaned. Then the first piston 1703 moves, thereby driving the rotating plate 1701 to move, and the cleaning ejector pin 1706 is inserted into the through hole 8, which facilitates the automatic ejection of dust and impurities in the through hole 8.

[0037] In this embodiment, Figure 4 、 Figure 6 and Figure 9 As shown, the self-cleaning mechanism 19 includes a compression spring 1901, and the compression spring 1901 is fixed to the inner bottom of the channel 18. A movable block 1902 is fixed to the top of the compression spring 1901. The compression spring 1901 supports the movable block 1902. When the extrusion rod 6 rotates with the first rotating shaft 5 and squeezes the movable block 1902, the movable block 1902 moves downward. When the extrusion rod 6 releases the squeezing of the movable block 1902, the movable block 1902 will automatically pop up under the action of the compression spring 1901.

[0038] In this embodiment, Figure 4 、 Figure 6 and Figure 9 As shown, a movable plate 1903 is fixed to the bottom of the movable block 1902, and a third oil cylinder 1904 is symmetrically fixed on both sides of the bottom of the support box 3, and a third piston 1905 is slidably connected in the third oil cylinder 1904. The third piston 1905 is symmetrically fixed on both sides of the bottom of the movable plate 1903. When the movable block 1902 moves downward, it can drive the movable plate 1903 and the two third pistons 1905 to move downward as a whole.

[0039] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 9As shown, an oil tank 1908 is provided in the base 1, and one of the third oil cylinders 1904 in each support box 3 is connected to the same oil tank 1908 through a first connecting pipe 1906, and the other third oil cylinder 1904 in each support box 3 is connected to two hoses 1707 through a second connecting pipe 1907. When the movable block 1902 is squeezed and moves downward, the corresponding movable plate 1903 and the two third pistons 1905 move downward as a whole, and the hydraulic oil in one of the third oil cylinders 1904 in the corresponding support box 3 is pressed into the oil tank 1908 through the first connecting pipe 1906, and the hydraulic oil in the other third oil cylinder 1904 in the corresponding support box 3 is pressed into the two hoses 1707 through the second connecting pipe 1907.

[0040] In this embodiment, Figure 1 、 Figure 2 and Figure 3 As shown, a fourth piston 1909 is slidably connected in the oil groove 1908, and a scraper 1910 is fixed to the upper end surface of the fourth piston 1909. The scraper 1910 passes through the upper end surface of the base 1. When the third piston 1905 moves downward, the hydraulic oil is pressed into the oil groove 1908. The fourth piston 1909 moves upward under the action of the oil pressure, thereby driving the scraper 1910 to move upward. The scraper 1910 can scrape off dust and impurities in the through hole 8.

[0041] The use method and advantages of the present invention: The working process of the self-cleaning fan is as follows:

[0042] like Figures 1 to 9 As shown: when the second rotating shaft 10 rotates, the third rotating shaft 14 and the two blades 15 rotate under the driving action of the first bevel gear 12 and the second bevel gear 13, thereby automatically exhausting air. The rotation of the first rotating shaft 5 drives the fan cover 7 to rotate, which is convenient for adjusting the exhaust angle. The through hole 8 is used for ventilation. Before cleaning the dust and impurities in the through hole 8, the fan cover 7 needs to be rotated to a vertical state and the through hole 8 to be cleaned faces downward. The squeezing rod 6 rotates with the first rotating shaft 5, and the squeezing rod 6 squeezes the movable block 1902. The movable block 1902, the movable plate 1903 and the two third pistons 1905 are integrated. The body moves downward, and the fourth piston 1909 moves upward under the action of oil pressure, thereby driving the scraper 1910 to move upward. Since the spring coefficient of the tension spring 1705 is relatively large, the first piston 1703 does not move at first, and the two second pistons 1709 move, thereby pushing open the rotating plate 1701, and the rotating plate 1701 rotates 90 degrees. Then the two first pistons 1703 move, and the movable plate 1704 and the cleaning ejector pin 1706 move accordingly. The cleaning ejector pin 1706 extends into the through hole 8, thereby automatically ejecting dust and impurities in the through hole 8, and the scraper 1910 automatically scrapes away the dust and impurities.

[0043] In summary, the self-cleaning fan achieves the purpose of self-cleaning and adjusting the exhaust angle, and meets people's usage needs.

[0044] The above has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

[0045] The orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only a simplified description for facilitating the description of the present invention, 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 thus cannot be understood as a limitation to the protected content of the present invention.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A self-cleaning fan, comprising a base (1) and a fan housing (7), characterized in that: Support plates (2) are symmetrically fixed on both sides of the upper end surface of the base (1), a support box (3) is fixed on the outer end surface of the support plate (2), a first rotating shaft (5) is rotatably connected inside the support box (3), an extrusion rod (6) is fixed on the outer side of the first rotating shaft (5), the fan cover (7) is rotatably connected between the two support plates (2) through the first rotating shaft (5), through holes (8) are symmetrically opened on both sides of the fan cover (7), a bracket (11) is fixed on the inner top of the fan cover (7), a third rotating shaft (14) is rotatably connected to the bracket (11), and fan blades (15) are symmetrically fixed at both ends of the third rotating shaft (14); Grooves (16) are provided on both sides of the top of the fan housing (7) and on both sides of the bottom of the fan housing (7), and a driving and unfolding mechanism (17) is provided in the groove (16). The driving and unfolding mechanism (17) comprises a rotating plate (1701), the rotating plate (1701) is rotatably connected in the groove (16), the rotating plate (1701) is connected to the fan housing (7) via a volute spring, the inner side of the rotating plate (1701) is connected to the movable plate (1704) via a tension spring (1705), and a cleaning ejector pin (1706) is fixed to the inner end surface of the movable plate (1704); A channel (18) is provided in the support box (3), a self-cleaning mechanism (19) is fixed in the channel (18), the first rotating shaft (5) passes through the channel (18), the self-cleaning mechanism (19) passes through the bottom of the support box (3) and is connected to the driving and unfolding mechanism (17), a first oil cylinder (1702) is fixed in the groove (16), and a first piston (1703) is slidably connected in the first oil cylinder (1702), and the rotating plate (1701) is fixed in the first oil cylinder (1702). At the end, a second oil cylinder (1708) is fixed in the groove (16), and the second oil cylinder (1708) is connected to the first oil cylinder (1702) through a hose (1707), a second piston (1709) is slidably connected in the second oil cylinder (1708), and a supporting column (1710) is fixed to the inner end surface of the second piston (1709), the self-cleaning mechanism (19) includes a compression spring (1901), and the compression spring (1901) is fixed to the inner bottom of the channel (18), the compression spring A movable block (1902) is fixed on the top of the movable block (1902), a movable plate (1903) is fixed on the bottom of the movable block (1902), a third oil cylinder (1904) is symmetrically fixed on both sides of the bottom of the support box (3), and a third piston (1905) is slidably connected in the third oil cylinder (1904), and the third piston (1905) is symmetrically fixed on both sides of the bottom of the movable plate (1903). An oil tank (1908) is provided in the base (1), and one of the oil tanks in each support box (3) is fixed on both sides of the bottom of the movable plate (1903). Each third oil cylinder (1904) is connected to the same oil tank (1908) through a first connecting pipe (1906), and another third oil cylinder (1904) in each support box (3) is connected to two hoses (1707) through a second connecting pipe (1907). A fourth piston (1909) is slidably connected in the oil tank (1908), and a scraper (1910) is fixed to the upper end surface of the fourth piston (1909), and the scraper (1910) passes through the upper end surface of the base (1).

2. A self-cleaning blower according to claim 1, characterized in that: A first motor (4) is fixed to the outside of one of the support boxes (3), and an output end of the first motor (4) is connected to one of the first rotating shafts (5).

3. The self-cleaning blower according to claim 1, characterized in that: A second motor (9) is fixed to the bottom of the fan housing (7), and the top of the second motor (9) is connected to the second rotating shaft (10). The second rotating shaft (10) passes through the bottom of the bracket (11) and is connected to the first bevel gear (12). One side of the first bevel gear (12) is meshed with the second bevel gear (13). The second bevel gear (13) is fixed to the outside of the third rotating shaft (14).

4. The self-cleaning blower according to claim 1, characterized in that: The through holes (8) are distributed in a rectangular array on both sides of the fan housing (7), and the cleaning ejector pins (1706) are distributed in a rectangular array on the movable plate (1704).

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