An exhaust fan unit convenient for cleaning filter screen

Abstract

The utility model discloses an exhaust fan unit which is convenient for cleaning a filter screen, and belongs to the field of fan unit cleaning. The main points of its technical solution include a box body, a fan is installed on the bottom surface of the box body, an air outlet and an air inlet are opened on the side wall of the box body, the air outlet of the fan is connected to the air outlet, and a filter screen is also installed in the box body, and its characteristic is that cleaning mechanisms for cleaning the filter screen are installed on both sides of the filter screen, and the cleaning mechanism comprises sliding rods and screw rods symmetrically installed on both sides of the filter screen, a motor at the top of the box body, an output end of the motor extends into the box body, and is connected to the screw rod at the output end of the motor, a telescopic component is installed on the sliding rod and the screw rod, one end of the telescopic component is slidably connected to the sliding rod, and the other end is threadedly connected to the screw rod, and a brush is installed on the telescopic component. The utility model has the effect of conveniently cleaning the filter screen.

Description

Technical Field

[0001] The utility model belongs to the field of exhaust fan unit cleaning, and more specifically relates to an exhaust fan unit which is convenient for cleaning a filter screen. Background Art

[0002] Exhaust fan units are devices used to exhaust indoor exhaust gas or pollutants, usually composed of fans, air ducts, control systems, filters, brackets or mounting frames, and sound insulation materials. Exhaust fan units generate airflow through fans to guide indoor exhaust gas or pollutants to the outdoors to keep indoor air fresh and the environment comfortable. The filters can filter particulate matter or pollutants in the exhaust gas to protect the environment and equipment.

[0003] The filter plays a key role in the exhaust fan unit. If the filter is not cleaned for a long time, dust and dirt will accumulate and become blocked. However, when the filter is blocked, air cannot pass through smoothly, which not only reduces the exhaust efficiency of the exhaust fan and affects the indoor air quality, but also increases the load when the exhaust fan is running, reducing the performance and life of the machine. The filter of the exhaust fan unit in the prior art is usually fixed in the box. When cleaning the filter, it is necessary to disassemble the box to clean the filter, which is very troublesome. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an exhaust fan unit that is easy to clean the filter screen, which has the advantage of convenient cleaning of the filter screen of the exhaust fan unit.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An exhaust fan unit for easy cleaning of a filter screen comprises a box body, a fan is installed on the bottom surface of the box body, an air outlet and an air inlet are opened on the side wall of the box body, the air outlet of the fan is connected to the air outlet, a filter screen is also installed in the box body, and cleaning mechanisms for cleaning the filter screen are installed on both sides of the filter screen;

[0007] The cleaning mechanism includes sliding rods and screw rods symmetrically installed on both sides of the filter screen, a motor on the top of the box, the output end of the motor extends into the box body, and the output end of the motor is connected to the screw rod. A telescopic component is installed on the sliding rod and the screw rod, one end of the telescopic component is slidably connected to the sliding rod, and the other end is threadedly connected to the screw rod. A brush is installed on the telescopic component, and the brush is close to the side wall of the filter screen.

[0008] The advantage of this scheme is at least that when cleaning the filter, first start the motor, the motor drives the screw to rotate, and while the screw rotates, it drives the telescopic assembly threadedly connected to the screw and the brush on the telescopic assembly to move up and down on the screw and the sliding rod, and the brush clings to the side wall of the filter to clean the filter. By setting the telescopic assembly, the function of the telescopic assembly is that when the brush is worn, the telescopic assembly can make the brush cling to the side wall of the filter, thereby avoiding the situation where the brush cannot cling to the side wall of the filter after long-term use and wear.

[0009] The utility model is further configured as follows: the telescopic assembly consists of a mounting seat and an I-shaped block; the I-shaped block is slidably mounted in the mounting seat; one end of the mounting seat is slidably connected to a sliding rod, and the other end is threadedly connected to a screw rod; a spring is installed between the side wall of the I-shaped block and the inner side wall of the mounting seat.

[0010] The utility model is further configured as follows: a reciprocating switch 1 and a reciprocating switch 2 are respectively arranged beside the screw rod and located on the inner bottom surface and the inner top surface of the box body.

[0011] The utility model is further configured as follows: silicone sheets are pasted on the surfaces of the first reciprocating switch and the second reciprocating switch.

[0012] The utility model is further configured as follows: a dust suction mechanism is installed on the mounting seat, the dust suction mechanism includes dust suction ports installed on the upper surface and the lower surface of the mounting seat, a vacuum cleaner is installed on the upper surface of the box body, and the vacuum cleaner and the dust suction port are connected by a hose.

[0013] The utility model is further configured as follows: a dust cover for preventing dust from flying around is installed at the dust suction port.

[0014] The utility model is further configured as follows: a rectangular hole is opened on the side wall of the box body, the rectangular hole penetrates the inner wall of the box body, a door is rotatably installed in the rectangular hole, and a handle is installed on the door.

[0015] The utility model is further configured as follows: the door is transparent.

[0016] In summary, the utility model has at least the following advantages:

[0017] 1. By setting a screw rod, a motor, a telescopic assembly and a brush, when cleaning the filter, first start the motor, the motor drives the screw rod to rotate, and while the screw rod rotates, it drives the telescopic assembly threadedly connected to the screw rod and the brush on the telescopic assembly to move up and down on the screw rod and the sliding rod, and the brush clings to the side wall of the filter to clean the filter. By setting the telescopic assembly, the function of the telescopic assembly is that when the brush is worn, the telescopic assembly can make the brush cling to the side wall of the filter, so as to avoid the brush being unable to cling to the side wall of the filter after being worn for a long time;

[0018] 2. By setting the reciprocating switch 1 and the reciprocating switch 2, after starting the motor, when the bottom and top surfaces of the telescopic component touch the reciprocating switch 1 and the reciprocating switch 2, the motor will be reversed and forward rotated, so that the telescopic component and the brush can reciprocate to clean the filter. The silicone sheet attached to the surface of the reciprocating switch 1 and the reciprocating switch 2 prevents the telescopic component from directly hitting the reciprocating switch 1 and the reciprocating switch 2, thereby playing a buffering role for the telescopic component;

[0019] 3. By setting up a dust suction mechanism, when the brush is cleaning the filter, the dust on the filter can be sucked away by the dust suction mechanism to prevent the dust on the filter from falling to other positions of the filter after cleaning. By setting up a dust cover, the dust cover prevents the dust from flying everywhere after cleaning, and the dust suction port can better suck away the cleaned dust through the dust suction mechanism. By setting up rectangular holes and doors, it is more convenient to repair and maintain the motor and screw rod. Setting the door to be transparent makes it easier to observe the movement state of the screw rod in the box, and it is also easy to find out whether there is a problem with the screw rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is an overall schematic diagram of this embodiment;

[0021] Figure 2 This is one of the three-dimensional cross-sectional schematic diagrams of this embodiment;

[0022] Figure 3 This is the second stereoscopic cross-sectional schematic diagram of this embodiment;

[0023] Figure 4 for Figure 3 A magnified schematic diagram of part A;

[0024] Figure 5 is an exploded schematic diagram of the telescopic assembly in this embodiment;

[0025] Figure 6 It is a schematic diagram of the telescopic component, the dust suction mechanism and the dust cover after being matched in this embodiment.

[0026] Figure numerals: 1. housing; 2. fan; 3. air outlet; 4. air inlet; 5. filter; 6. cleaning mechanism; 601. screw rod; 602. sliding rod; 603. brush; 604. motor; 7. telescopic assembly; 701. mounting seat; 702. I-shaped block; 703. spring; 8. reciprocating switch one; 9. reciprocating switch two; 10. silicone sheet; 11. dust suction mechanism; 1101. dust suction port; 1102. vacuum cleaner; 1103. hose; 12. dust cover; 13. rectangular hole; 14. door; 15. handle. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] An exhaust fan 2 unit that is easy to clean the filter screen, such as Figure 1 As shown, it includes a box body 1, a fan 2 is installed on the bottom surface of the box body 1, an air outlet 3, an air inlet 4 and a rectangular hole 13 are opened on the side wall of the box body 1, the air outlet of the fan 2 is connected to the air outlet 3, the rectangular hole 13 runs through the inner wall of the box body 1, and a transparent door 14 is rotatably installed in the rectangular hole 13, and a handle 15 is installed on the door 14.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a filter screen 5 is also installed in the box body 1, and cleaning mechanisms 6 for cleaning the filter screen 5 are installed on both sides of the filter screen 5. The cleaning mechanism 6 includes sliding rods 602 and screw rods 601 symmetrically installed on both sides of the filter screen 5. A motor 604 is at the top of the box body 1, and the output end of the motor 604 extends into the box body 1. The output end of the motor 604 is connected to the screw rod 601. Next to the screw rod 601 and located on the inner bottom surface and the inner top surface of the box body 1, a reciprocating switch 1 8 and a reciprocating switch 2 9 are respectively arranged. A silicone sheet 10 is pasted on the surface of the reciprocating switch 1 8 and the reciprocating switch 2 9. The silicone sheet 10 prevents the telescopic component 7 from directly colliding with the reciprocating switch 1 8 and the reciprocating switch 2 9, thereby playing a buffering role for the telescopic component 7.

[0030] like Figure 5 As shown, a telescopic component 7 is installed on the sliding rod 602 and the screw rod 601. One end of the telescopic component 7 is slidably connected to the sliding rod 602, and the other end is threadedly connected to the screw rod 601. A brush 603 is installed on the telescopic component 7, and the brush 603 is close to the side wall of the filter screen 5.

[0031] The telescopic component 7 consists of a mounting seat 701 and an I-shaped block 702. The I-shaped block 702 is slidably installed in the mounting seat 701. One end of the mounting seat 701 is slidably connected to the sliding rod 602, and the other end is threadedly connected to the screw rod 601. A spring 703 is installed between the side wall of the I-shaped block 702 and the inner wall of the mounting seat 701. When the brush 603 is worn, the I-shaped block 702 will be pushed outward under the action of the spring 703, so that the brush 603 can be close to the outer wall of the filter screen 5.

[0032] like Figure 6 As shown (refer to Figure 3 ), a dust suction mechanism 11 is installed on the mounting seat 701, and the dust suction mechanism 11 includes dust suction ports 1101 installed on the upper surface and the lower surface of the mounting seat 701, and a dust cover 12 for preventing dust from flying around is installed at the dust suction port 1101, and a dust cleaner 1102 is installed on the upper surface of the box body 1, and the dust cleaner 1102 and the dust suction port 1101 are connected by a hose 1103. By setting up the dust suction mechanism 11, when the brush 603 is cleaning the filter screen 5, the dust on the filter screen 5 can be sucked away by the dust suction mechanism 11, so as to prevent the dust on the filter screen 5 from falling to other positions of the filter screen 5 after cleaning, and by setting up the dust cover 12, the dust cover 12 can prevent the dust from flying around after cleaning, and the dust suction port 1101 can better suck away the cleaned dust through the dust suction mechanism 11.

[0033] The working process and beneficial effects of the utility model are as follows:

[0034] When cleaning the filter 5, first start the motor 604, the motor 604 drives the screw rod 601 to rotate, and while the screw rod 601 rotates, it drives the telescopic component 7 threadedly connected to the screw rod 601 and the brush 603 on the telescopic component 7 to move up and down on the screw rod 601 and the sliding rod 602, and the brush 603 is close to the side wall of the filter 5 to clean the filter 5. By setting the telescopic component 7, the function of the telescopic component 7 is that when the brush 603 is worn, the brush 603 can be close to the filter under the action of the telescopic component 7. The side wall of the filter 5 is prevented from being unable to cling to the side wall of the filter 5 after the brush 603 is worn out due to long-term use. After starting the motor 604, when the bottom and top surfaces of the telescopic component 7 touch the reciprocating switch 1 8 and the reciprocating switch 2 9, the motor 604 will be reversed and rotated forward, so that the telescopic component 7 and the brush 603 can reciprocate to clean the filter 5. During the cleaning process, under the action of the protective cover, the dust suction port 1101 and the vacuum cleaner, the dust cleaned from the filter 5 is sucked out of the box body 1, and the cleaning of the filter 5 is completed.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims

1. An exhaust fan unit for facilitating cleaning of a filter screen, comprising a housing (1), a fan (2) being mounted on the bottom surface of the housing (1), an air outlet (3) and an air inlet (4) being provided on the side wall of the housing (1), the air outlet of the fan (2) being connected to the air outlet (3), and a filter screen (5) being further mounted in the housing (1), characterized in that: Cleaning mechanisms (6) for cleaning the filter screen (5) are installed on both sides of the filter screen (5); The cleaning mechanism (6) comprises a sliding rod (602) and a screw rod (601) symmetrically mounted on both sides of the filter screen (5), a motor (604) at the top of the box body (1), the output end of the motor (604) extending into the box body (1), the output end of the motor (604) being connected to the screw rod (601), a telescopic component (7) being mounted on the sliding rod (602) and the screw rod (601), one end of the telescopic component (7) being slidably connected to the sliding rod (602), and the other end being threadedly connected to the screw rod (601), a brush (603) being mounted on the telescopic component (7), and the brush (603) being closely attached to the side wall of the filter screen (5).

2. The exhaust fan unit for easy cleaning of the filter screen according to claim 1, characterized in that: The telescopic assembly (7) is composed of a mounting seat (701) and an I-shaped block (702). The I-shaped block (702) is slidably mounted in the mounting seat (701). One end of the mounting seat (701) is slidably connected to the sliding rod (602), and the other end is threadedly connected to the screw rod (601). A spring (703) is installed between the side wall of the I-shaped block (702) and the inner side wall of the mounting seat (701).

3. The exhaust fan unit for easy cleaning of the filter screen according to claim 2, characterized in that: A reciprocating switch 1 (8) and a reciprocating switch 2 (9) are respectively arranged beside the screw rod (601) and located on the inner bottom surface and the inner top surface of the box body (1).

4. The exhaust fan unit for easy cleaning of the filter screen according to claim 3, characterized in that: Silicone sheets (10) are adhered to the surfaces of the reciprocating switch 1 (8) and the reciprocating switch 2 (9).

5. The exhaust fan unit for easy cleaning of the filter screen according to claim 4, characterized in that: A dust suction mechanism (11) is mounted on the mounting seat (701), the dust suction mechanism (11) comprising dust suction ports (1101) mounted on the upper surface and the lower surface of the mounting seat (701), a dust collector (1102) is mounted on the upper surface of the box body (1), and the dust collector (1102) and the dust suction port (1101) are connected via a hose (1103).

6. The exhaust fan unit for easy cleaning of the filter screen according to claim 5, characterized in that: A dust cover (12) is installed at the dust suction port (1101) to prevent dust from flying around.

7. The exhaust fan unit for easy cleaning of the filter screen according to claim 6, characterized in that: A rectangular hole (13) is provided on the side wall of the box body (1), the rectangular hole (13) passes through the inner wall of the box body (1), a door (14) is rotatably mounted in the rectangular hole (13), and a handle (15) is mounted on the door (14).

8. The exhaust fan unit for easy cleaning of the filter screen according to claim 7, characterized in that: The door (14) is transparent.

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