Fan air inlet device

Abstract

The utility model relates to the technical field of fans, and discloses an air inlet device of a fan, which comprises a fan body, at least two air inlet pipes and an air outlet pipe, the frame body is arranged at the end, away from the fan body, of the air inlet pipe, a connecting piece is arranged on the air inlet pipe, the frame body is detachably connected with the fan body through the connecting piece, a filter screen is fixedly connected into the frame body, and the filter screen can cover a port of the air inlet pipe; the baffles are connected to the two sides of the inner wall face of the air inlet pipe in a relatively rotating mode, a driving assembly is arranged on the air inlet pipe, the driving end of the driving assembly is connected with the baffles so that the ends, away from the air inlet pipe, of the baffles can be close to each other or away from each other, and when the ends, close to each other, of the baffles abut against each other, the baffles are matched to block the air inlet pipe. The cleaning efficiency of the filtering structure can be improved, and normal ventilation and use of the fan can be kept.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field especially is related to a fan air inlet device. BACKGROUND

[0002] Generally, the filter structure is arranged at the air inlet of the fan to reduce the dust into the fan and cause damage to the blade structure, and in order to improve the service life of the filter structure, a cleaning device is usually designed to clean the filter screen.

[0003] In the double-air-inlet dustproof fan with patent No. CN221973930U, the cleaning plate is moved by the double-shaft motor to move the brush to clean the filter screen, but in the cleaning process, the dust and impurities attached to the filter screen are directly absorbed by the air inlet, and the existing technology needs to rotate the threaded rod to move the filter screen plate out of the inside of the frame body, and then clean the filter screen plate, which leads to low cleaning efficiency, and in essence, the filter screen plate is disassembled from the fan and then cleaned. However, since some fans have multiple air inlets, when disassembling and replacing the filter screen plate at one air inlet, the entire fan needs to be closed before replacement and disassembly to prevent the air inlet from sucking external dust, thereby affecting the normal ventilation of the fan. SUMMARY

[0004] The utility model aims at providing a fan air inlet device to solve the above-mentioned problems of the prior art, which can improve the cleaning efficiency of the filter structure and ensure the normal ventilation of the fan.

[0005] To achieve the above-mentioned purpose, the utility model provides the following scheme: the utility model provides a fan air inlet device, which comprises:

[0006] The fan body has at least two air inlet pipes;

[0007] The frame body is arranged at one end of the air inlet pipe away from the fan body, the air inlet pipe is provided with a connecting piece, the frame body is detachably connected with the fan body through the connecting piece, a filter screen is fixedly connected in the frame body, and the filter screen can cover the port of the air inlet pipe;

[0008] A pair of baffles are rotatably connected to the inner wall surfaces of the air inlet pipe on both sides, the air inlet pipe is provided with a driving assembly, the driving end of the driving assembly is connected with the pair of baffles, so that the ends of the pair of baffles away from the air inlet pipe are close to or away from each other, and when the close-to-each-other ends of the pair of baffles abut, the pair of baffles cooperate to block the air inlet pipe.

[0009] Preferably, the driving assembly comprises:

[0010] A micro servo motor is fixed to the top surface of the air inlet pipe, and the output shaft of the micro servo motor is fixed to a driving rod extending downward vertically into the air inlet pipe and connected to the air inlet pipe.

[0011] A transmission part is arranged on the driving rod, and the driving rod is connected to the pair of baffle plates through the transmission part.

[0012] Preferably, the transmission part comprises:

[0013] A pair of worms are fixed to the two sides of the driving rod along the center symmetry and coaxially.

[0014] A pair of worm gears are engaged with the pair of worms one by one, the shaft of the worm gear is fixed to a transmission rod, the transmission rod extends along the width direction of the air inlet pipe, and the transmission rod is connected to the air inlet pipe, a hinge shaft is fixed in the air inlet pipe, the side wall of the rotating end of the hinge shaft is fixed to the baffle plate, and the part of the transmission rod extending into the air inlet pipe is fixed to the shaft center of the rotating end of the hinge shaft.

[0015] Preferably, a rubber gasket is fixed to the mutually close end of the pair of baffle plates.

[0016] Preferably, the connecting piece comprises:

[0017] A pair of clamping seats are fixed to the opposite sides of the outer wall surface of the air inlet pipe, a clamping groove is arranged on the side of the clamping seat away from the fan body, and a clamping part is arranged in the clamping seat and elastically slides along the vertical direction.

[0018] A pair of clamping plates are fixed to the frame and correspond to the pair of clamping seats one by one, one end of the clamping plate extends into the clamping groove, a clamping hole is arranged on the clamping plate, and the clamping part is clamped with the clamping hole.

[0019] Preferably, the clamping part comprises:

[0020] A sliding block is arranged on the outer side wall of the clamping groove along the vertical direction, the sliding block is limited to slide in the sliding groove, and the top surface of the sliding block and the inner wall of the sliding groove are fixed to the two ends of a plurality of springs.

[0021] A clamping block is fixed to the sliding block, the two ends of the clamping block extend out of the sliding groove along the width direction of the air inlet pipe, and the part of the clamping block extending into the clamping groove is clamped with the clamping hole.

[0022] Preferably, the frame is arranged on the side of the air inlet pipe away from the fan body.

[0023] The utility model discloses the following technical effects:

[0024] The utility model discloses a plurality of air inlet pipes that the fan body has, through setting frame body, utilize the filter screen of fixed connection in frame body to cover air inlet pipe, to block the external dust from entering the fan body inside, and through setting connecting piece on air inlet pipe, make frame body directly with air inlet pipe detachable connection, when cleaning filter screen, directly dismantle and replace new frame body and filter screen can, improve cleaning efficiency, in addition, a pair of baffle is relatively set in air inlet pipe, drive assembly drives control to a pair of baffle, make a pair of baffle close to each other and block up air inlet pipe, when dismantling and replacing filter screen, can close corresponding air inlet pipe, and the fan body can pass through remaining air inlet pipe and carry out ventilation operation. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced the drawing needed to be used in the embodiment, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0026] Figure 1 It is the connection relation diagram of fan body and air inlet pipe in the utility model;

[0027] Figure 2 It is the connection relation diagram of drive rod and baffle in the utility model;

[0028] Figure 3 It is the connection relation diagram of clamping block and clamping plate in the utility model;

[0029] Figure 4 It is the connection relation diagram of sliding block and clamping seat in the utility model;

[0030] Figure 5 It is the connection relation diagram of embedding groove and air inlet pipe in the utility model;

[0031] Wherein, 1, fan body;2, air inlet pipe;3, frame body;4, filter screen;5, baffle;6, micro servo motor;7, drive rod;8, worm;9, worm wheel;10, transmission rod;11, hinged axle;12, rubber gasket;13, clamping seat;14, clamping plate;15, sliding block;16, clamping block;17, spring;18, clamping hole;19, guide slot. DETAILED DESCRIPTION

[0032] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more apparent, obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0034] With reference to Figures 1-5 The utility model provides a fan air inlet device, it includes:

[0035] Fan body 1 has at least two air inlet pipe 2;

[0036] Frame 3 is arranged in air inlet pipe 2 away from fan body 1 one end, air inlet pipe 2 is provided with connecting piece, frame 3 is detachably connected with fan body 1 through connecting piece, frame 3 is fixedly connected with filter screen 4 in, filter screen 4 can cover the port of air inlet pipe 2;

[0037] A pair of baffle 5 are relatively rotatably connected in air inlet pipe 2 inner wall surface both sides, air inlet pipe 2 is provided with drive assembly, and the drive end of drive assembly is connected with a pair of baffle 5, so that the end of a pair of baffle 5 away from air inlet pipe 2 is close to each other or away from each other, when the mutual close end of a pair of baffle 5 abuts, a pair of baffle 5 cooperates and blocks air inlet pipe 2.

[0038] The utility model has a plurality of air inlet pipe 2 on the fan body 1, by setting frame 3, utilize the filter screen 4 fixedly connected in frame 3 to cover air inlet pipe 2, to block the external dust into fan body 1 inside, and through setting connecting piece on air inlet pipe 2, make frame 3 directly with air inlet pipe 2 detachably connected, when cleaning filter screen 4, directly dismounts and replaces new frame 3 and filter screen 4, can, improves cleaning efficiency, in addition, a pair of baffle 5 are relatively arranged in air inlet pipe 2, drive assembly is driven to control a pair of baffle 5, makes a pair of baffle 5 close to each other and blocks air inlet pipe 2, when dismounting and replacing filter screen 4, corresponding air inlet pipe 2 can be closed, and fan body 1 can be ventilated through the rest air inlet pipe 2.

[0039] Further, the drive assembly comprises:

[0040] Miniature servo motor 6 is fixedly connected in air inlet pipe 2 top surface, and the output shaft of miniature servo motor 6 is fixedly connected with drive rod 7 along the vertical downward, and drive rod 7 extends into air inlet pipe 2 and is connected with air inlet pipe 2;

[0041] The transmission part is arranged on the driving rod 7, and the driving rod 7 is connected with the pair of baffles 5 through the transmission part.

[0042] The driving rod 7 is rotated by the micro servo motor 6, the pair of baffles 5 are driven to move close to or away from each other by the driving rod 7, the efficiency of the pair of baffles 5 in plugging the air inlet pipe 2 is improved, and the common PLC servo system is adopted to facilitate driving control.

[0043] Further, the transmission part comprises:

[0044] A pair of worms 8 are arranged on both sides of the driving rod 7 in a central symmetry and are fixed coaxially;

[0045] A pair of worm gears 9 are engaged with the pair of worms 8 one by one, the worm gears 9 are fixed with driving rods 10 at the shaft centers, the driving rods 10 extend along the width direction of the air inlet pipe 2, the driving rods 10 are connected with the air inlet pipe 2, the air inlet pipe 2 is fixed with a hinge shaft 11, the side wall of the rotating end of the hinge shaft 11 is fixed with the baffle 5, and the part of the driving rod 10 extending into the air inlet pipe 2 is fixed at the shaft center of the rotating end of the hinge shaft 11.

[0046] The driving rod 7 is rotated by the micro servo motor 6, the worm 8 is rotated, the worm gear 9 is rotated, the driving rod 10 is rotated, the rotating end of the hinge shaft 11 is rotated, the baffle 5 is rotated, and the air inlet pipe 2 is plugged by the pair of baffles 5.

[0047] When the fan body 1 works normally, the pair of baffles 5 can be rotated towards or away from each other by the micro servo motor 6, the size of the air inlet pipe 2 can be adjusted, the air inlet amount can be regulated, the worm gear 9 and the worm 8 can be used to form self-locking stability of the rotating angle of the baffle 5.

[0048] Further, the pair of baffles 5 are fixed with rubber pads 12 at the approaching ends.

[0049] Specifically, the sum of the lengths of the pair of baffles 5 in the vertical direction is greater than the length of the air inlet pipe 2 in the vertical direction, the width of the baffle 5 is the same as the width of the air inlet pipe 2, the pair of baffles 5 can effectively plug the air inlet pipe 2 after approaching each other, and the rubber pads 12 can effectively improve the sealing performance of the plugging.

[0050] Further, the connecting piece comprises:

[0051] A pair of clamping seats 13 are fixed on the opposite sides of the outer wall surface of the air inlet pipe 2, a clamping groove is formed on the side of the clamping seat 13 away from the fan body 1, and a clamping part is elastically and slidably arranged in the clamping seat 13 in the vertical direction;

[0052] A pair of card plates 14 are fixed to the frame 3 and correspond one-to-one with a pair of card seats 13. One end of the card plate 14 extends into the card slot. The card plate 14 has a card hole 18, and the carding part engages with the card hole 18.

[0053] The snap-fit ​​part, which slides elastically in the vertical direction, snaps into the snap-fit ​​hole 18 on the snap-fit ​​plate 14, so that the snap-fit ​​plate 14 and the snap-fit ​​seat 13 are snapped together, and the frame 3 and the air inlet pipe 2 are connected and fixed. When disassembling, it is only necessary to elastically compress the snap-fit ​​part so that the snap-fit ​​part is not elastically snapped into the snap-fit ​​hole 18.

[0054] Furthermore, the snap-fit ​​part includes:

[0055] The slider 15 has a groove on the outer wall of the slot along the vertical direction. The slider 15 is limited and slidably connected in the groove. Several springs 17 are fixedly connected between the top surface of the slider 15 and the inner wall of the groove.

[0056] The locking block 16 is fixed to the slider 15. Both ends of the locking block 16 extend into grooves along the width direction of the air inlet pipe 2. The part of the locking block 16 that extends into the groove engages with the locking hole 18.

[0057] Reference Figure 3 , Figure 4 The spring 17 provides the slider 15 with an elastic tendency to move vertically upward, and the front end of the card plate 14 is provided with a guide groove 19 that communicates with the card hole 18. The inner wall of the guide groove 19 is inclined downward towards the card hole 18. The card block 16 located in the card groove slides along the guide groove 19 and generates a vertically downward squeezing force. After sliding into the card hole 18, the elastic tendency provided by the spring 17 directly engages the card block 16 in the card hole 18, thereby realizing the engagement and fixation of the card plate 14 and the card seat 13.

[0058] Furthermore, a groove is provided on the side of the frame 3 near the air inlet pipe 2, and the size of the groove corresponds to and matches the outer edge of the air inlet pipe 2. The frame 3 is sleeved on the end of the air inlet pipe 2 away from the fan body 1.

[0059] By fitting the frame 3 onto the end face of the air inlet pipe 2, the filter screen 4 is ensured to effectively cover the air inlet pipe 2, and the connection tightness between the frame 3 and the air inlet pipe 2 is also improved.

[0060] The working principle of the fan inlet device of this utility model is as follows:

[0061] For the air inlet pipe 2 that needs to replace the filter screen 4, the micro servo motor 6 on the air inlet pipe 2 is started, the drive rod 7 rotates a pair of worms 8, the pair of worms 8 rotates a pair of worm gears 9, drives a pair of baffle plates 5 to rotate close to each other, and finally makes the rubber gasket 12 on the pair of baffle plates 5 abut, then the part of the clamping block 16 that is pressed down and extends into the clamping seat 13 drives the sliding block 15 to stretch the spring 17, makes the clamping block 16 and the clamping hole 18 separate, pulls out the frame 3 in the direction away from the air inlet pipe 2, sets the new frame 3 for replacement on the air inlet pipe 2, and corresponds to the clamping plate 14 extending into the clamping groove, after the clamping block 16 and the clamping hole 18 are clamped, the disassembly and replacement of the new filter screen 4 are completed, finally the micro servo motor 6 is reversed, the pair of baffle plates 5 are rotated to open the air inlet pipe 2.

[0062] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0063] The above-described embodiments are only preferred modes of the present application, and do not limit the scope of the present application, and various modifications and improvements to the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application should fall within the protection scope of the present application.

Claims

1. A fan air inlet device, characterized in that, include: The fan body (1) has at least two air inlet pipes (2); A frame (3) is set at one end of the air inlet pipe (2) away from the fan body (1). A connector is provided on the air inlet pipe (2). The frame (3) is detachably connected to the fan body (1) through the connector. A filter screen (4) is fixed inside the frame (3). The filter screen (4) can cover the port of the air inlet pipe (2). A pair of baffles (5) are rotatably connected to both sides of the inner wall of the air inlet pipe (2). A drive assembly is provided on the air inlet pipe (2). The drive end of the drive assembly is connected to the pair of baffles (5) so that the ends of the pair of baffles (5) away from the air inlet pipe (2) move closer to each other or further away from each other. When the ends of the pair of baffles (5) approach each other, the pair of baffles (5) cooperate to block the air inlet pipe (2).

2. The fan inlet device according to claim 1, characterized in that, The driving component includes: A micro servo motor (6) is fixed to the top surface of the air inlet pipe (2). The output shaft of the micro servo motor (6) is fixed to a drive rod (7) vertically downward. The drive rod (7) extends into the air inlet pipe (2) and is rotatably connected to the air inlet pipe (2). A transmission unit is provided on the drive rod (7), and the drive rod (7) is connected to a pair of baffles (5) via the transmission unit.

3. The fan inlet device according to claim 2, characterized in that, The transmission unit includes: A pair of worm gears (8) are centrally symmetrical and coaxially fixed on both sides of the drive rod (7); A pair of worm gears (9) mesh with a pair of worms (8) in a one-to-one correspondence. A transmission rod (10) is fixedly connected to the axis of the worm gears (9). The transmission rod (10) extends along the width direction of the air inlet pipe (2) and is rotatably connected to the air inlet pipe (2). A hinge shaft (11) is fixedly connected inside the air inlet pipe (2). The side wall of the rotating end of the hinge shaft (11) is fixedly connected to the baffle (5). The part of the transmission rod (10) that extends into the air inlet pipe (2) is fixedly connected to the axis of the rotating end of the hinge shaft (11).

4. The fan inlet device according to claim 1, characterized in that: A rubber gasket (12) is fixed to the adjacent ends of each pair of baffles (5).

5. The fan inlet device according to claim 1, characterized in that, The connector includes: A pair of card holders (13) are respectively fixed to opposite sides of the outer wall of the air inlet pipe (2). The card holder (13) has a card slot on the side away from the fan body (1). The card holder (13) is provided with a carding part that can be elastically slidably connected in the vertical direction. A pair of card plates (14) are fixed to the frame (3) and correspond one-to-one with a pair of card seats (13). One end of the card plate (14) extends into the card slot. The card plate (14) has a card hole (18) and the card engaging part engages with the card hole (18).

6. The fan inlet device according to claim 5, characterized in that, The snap-fit ​​portion includes: The slider (15) has a groove on the outer wall of the slot in the vertical direction. The slider (15) is limited to sliding in the groove. The top surface of the slider (15) is fixed to the two ends of a number of springs (17). A locking block (16) is fixed to the slider (15). Both ends of the locking block (16) extend out of the groove along the width direction of the air inlet pipe (2). The part of the locking block (16) that extends into the groove engages with the locking hole (18).

7. The fan inlet device according to claim 1, characterized in that: The frame (3) has a groove on the side near the air inlet pipe (2), and the size of the groove corresponds to and matches the outer edge of the air inlet pipe (2). The frame (3) is sleeved on the end of the air inlet pipe (2) away from the fan body (1).

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