Exhaust fan with filter element convenient to replace

Abstract

The exhaust fan comprises a shell, a filter assembly, a suction device, an adapter piece and a fan, the shell is provided with an inner cavity and an exhaust outlet which are perpendicular to each other, the adapter piece and the filter assembly are sequentially connected to the inner cavity, the fan is arranged between the adapter piece and the exhaust outlet, the shell is provided with a connecting part extending into the adapter piece, and the suction device is arranged on the connecting part. The connecting part is connected with a suction device for clamping the filter assembly, the filter assembly comprises an outer buckle plate, an inner buckle plate and a filter element, a clamping strip is arranged on the side surface of the outer buckle plate, the outer buckle plate is clamped to the inner buckle plate through the clamping strip, the filter element is arranged between the outer buckle plate and the inner buckle plate, and the inner buckle plate is provided with a clamping part for clamping the suction device. The main purpose of the utility model is to facilitate the assembly and disassembly of the filter assembly through the suction device structure, the outer buckle plate is clamped with the inner buckle plate through the clamping strip, the structure is convenient for manual disassembly and assembly and convenient for regular replacement of the filter element, auxiliary tools are not needed during replacement, and the replacement mode is simple and rapid.

Description

Technical Field

[0001] This utility model relates to the technical field of exhaust fans, and in particular to an exhaust fan with an easy-to-replace filter element. Background Technology

[0002] Printing exhaust fans are mainly used to prevent ink splatter when inkjet guns spray paint. They mainly consist of a housing, a filter cartridge and a fan inside the housing. The force of the fan causes the ink produced by the printing to adhere to the filter cartridge, thereby preventing ink splatter from affecting the indoor environment and protecting human health. However, prolonged use of printing exhaust fans can cause filter cartridge clogging, so the filter cartridge needs to be replaced regularly. Traditional printing exhaust fans require tools to remove screws and other parts to replace the filter cartridge, which is inconvenient. Utility Model Content

[0003] To overcome the shortcomings of the prior art, the technical solution adopted by this utility model is: an exhaust fan that facilitates filter replacement, comprising a housing, a filter assembly, a suction device, an adapter, and a fan. The housing has an inner cavity and an exhaust port oriented perpendicularly to each other. The adapter and the filter assembly are sequentially connected to the inner cavity. A fan is provided between the adapter and the exhaust port. The housing has a connecting part extending into the adapter. The connecting part is connected to a suction device for engaging the filter assembly. The filter assembly includes an outer buckle plate, an inner buckle plate, and a filter element. A retaining strip is provided on the side of the outer buckle plate. The outer buckle plate is engaged with the inner buckle plate by the retaining strip. The filter element is disposed between the outer buckle plate and the inner buckle plate. The inner buckle plate has a retaining part for engaging the suction device.

[0004] With the above technical solution, since the exhaust vent is perpendicular to the inner cavity and faces upwards, the exhaust fan can be placed against the wall and operate, improving space utilization. When the filter element needs to be replaced, pull the filter assembly and make the buckle disengage from the suction device. The outer buckle strip flips outwards, making the outer buckle plate disengage from the inner buckle plate. At this time, the filter element can be replaced. After replacement, put the outer buckle plate over the inner buckle plate, press down and make the buckle strip engage in the side hole of the inner buckle plate. Push the filter assembly into the inner cavity towards the adapter until the buckle part engages in the suction device, thus completing the filter element replacement. No auxiliary tools are required, and the replacement method is simple and quick.

[0005] The present invention is further configured such that the adapter is provided with an opening groove adapted to the connecting part, the connecting part includes a reinforcing rib integrally formed on the outer shell, a positioning plate and a first mounting post, the first mounting post is provided on both sides of the positioning plate and the first mounting post is connected with reinforcing ribs around its perimeter, the first mounting post extends through the opening groove into the adapter, and the first mounting post is threadedly connected to a suction device; the reinforcing ribs improve the structural strength of the positioning plate and the first mounting post, and prevent the positioning plate and the first mounting post from bending and being damaged.

[0006] The present invention is further configured such that the suction device includes a housing, a steering component, a rotating shaft, a torsion spring, and a fixing frame. The housing is rotatably connected to two sets of mirror-symmetrically distributed steering components, and the steering components are rotatably connected to a rotating shaft for engaging the buckle portion. The housing is provided with a torsion spring for controlling the relative movement of adjacent steering components. The housing is fixedly connected to a first mounting post by the fixing frame. The suction device is a traditional cabinet door locking hardware component, with an additional fixing frame for fixation. The fixing frame fixes the suction device to the housing. This structure is simple and stable, and has a low production cost.

[0007] The present invention is further configured such that the housing has a side mounting portion, the fixing frame has a mounting groove and a secondary mounting groove, and a side stop portion located outside the secondary mounting groove. The housing is snapped into the mounting groove, the side mounting portion is snapped into the secondary mounting groove, one end of the housing abuts against the positioning plate, and the other end abuts against the side stop portion through the side mounting portion. The positioning of the positioning plate and the side stop portion prevents the suction device from moving along the mounting groove, thereby maintaining the stability of the structure.

[0008] The present invention is further configured such that the outer shell is provided with a second mounting post at the reinforcing rib, the adapter is provided with a mounting hole corresponding to the second mounting post, the adapter is threaded to the outer shell through the second mounting post, and the adapter is fixed to the outer shell by a self-tapping screw for easy installation.

[0009] The present invention is further configured such that the inner buckle plate has reinforcing parts on both sides, the buckle part is provided on the reinforcing parts, the inner buckle plate has square holes distributed in a rectangular array, and the outer buckle plate has rectangular grooves with the same orientation as the square holes. The reinforcing parts improve the structural strength of the buckle part and prevent the buckle part from being damaged by the force of the suction device when the filter assembly is disassembled and assembled. The square hole structure of the inner buckle plate effectively supports the surface of the filter element and prevents the filter element from deforming.

[0010] The present invention is further configured such that the outer shell includes a cover, and a folding plate, an exhaust hood, a handle, a control component, and an airbrush holder disposed on the cover. The folding plate is rotatably connected to the opening of the inner cavity, the exhaust port is connected to the exhaust hood, the handle is disposed between the folding plate and the exhaust hood, and the control component and the airbrush holder are respectively disposed on both sides of the exhaust hood. The control component includes a rotary switch, a switch button, and a power interface.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. Because the exhaust vent is oriented perpendicular to the inner cavity and upwards, the exhaust fan can be placed against the wall and operate, improving space utilization;

[0013] 2. The suction device structure facilitates the assembly and disassembly of the filter components. The outer buckle plate is connected to the inner buckle plate by a clip. This structure facilitates manual assembly and disassembly, making it convenient to replace the filter element regularly. No auxiliary tools are required for replacement, making the replacement process simple and quick.

[0014] The embodiments of this utility model will be further described below with reference to the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is an exploded view of the structure of this utility model;

[0016] Figure 2 This is an exploded view of the structure of the filter assembly of this utility model;

[0017] Figure 3 This is a front view of the outer casing of this utility model;

[0018] Figure 4 This is a front view of the adapter of this utility model.

[0019] Figure 5 This is a schematic diagram of the structure of the suction device of this utility model;

[0020] Figure 6 This is a perspective view of the outer shell of this utility model;

[0021] Wherein: 1-Outer shell, 2-Filter assembly, 3-Aspirator, 4-Adapter, 5-Fan, 11-Inner cavity, 12-Exhaust vent, 13-Connecting part, 131-Reinforcing rib, 132-Positioning plate, 133-First mounting post, 14-Second mounting post, 15-Hood, 16-Folding plate, 17-Exhaust hood, 18-Handle, 19-Control assembly, 20-Inkjet holder, 21-Outer buckle plate, 22-Inner buckle plate, 23-Filter element, 211-Clamping strip, 212-Rectangular groove, 221-Snap-on part, 222-Reinforcing part, 223-Square hole, 31-Shell, 311-Side mounting part, 32-Swivel part, 33-Rotating shaft, 34-Torsion spring, 35-Fixing bracket, 351-Mounting groove, 352-Secondary mounting groove, 353-Side baffle, 41-Opening groove, 42-Mounting hole; Detailed Implementation

[0022] like Figure 1 , 2As shown, this embodiment provides an exhaust fan that facilitates filter replacement, including a housing 1, a filter assembly 2, a suction device 3, an adapter 4, and a fan 5. The housing 1 has an inner cavity 11 and an exhaust port 12 facing perpendicularly to each other. The adapter 4 and the filter assembly 2 are sequentially connected to the inner cavity 11. The fan 5 is provided between the adapter 4 and the exhaust port 12. The housing 1 has a connecting part 13 extending into the adapter 4. The connecting part 13 is connected to the suction device 3 for engaging the filter assembly 2. The filter assembly 2 includes an outer buckle plate 21, an inner buckle plate 22, and a filter element 23. The outer buckle plate 21 has a retaining strip 211 on its side. The outer buckle plate 21 is engaged with the inner buckle plate 22 by the retaining strip 211. The filter element 23 is located between the outer buckle plate 21 and the inner buckle plate 22. The inner buckle plate 22 has a retaining part 221 for engaging the suction device 3.

[0023] Combination Figure 3 , 4 As shown, in this embodiment, the adapter 4 is provided with an opening groove 41 that matches the connecting part 13. The connecting part 13 includes a reinforcing rib 131 integrally formed on the outer shell 1, a positioning plate 132, and a first mounting post 133. The first mounting post 133 is provided on both sides of the positioning plate 132, and the reinforcing rib 131 is connected around the first mounting post 133. The first mounting post 133 extends through the opening groove 41 into the adapter 4, and the first mounting post 133 is threadedly connected to the suction device 3. The reinforcing rib 131 improves the structural strength of the positioning plate 132 and the first mounting post 133, and prevents the positioning plate 132 and the first mounting post 133 from bending and being damaged.

[0024] Combination Figure 5 As shown, in this embodiment, the suction device 3 includes a housing 31, a steering component 32, a rotating shaft 33, a torsion spring 34, and a fixing frame 35. The housing 31 is rotatably connected to two sets of mirror-symmetrically distributed steering components 32. The steering components 32 are rotatably connected to a rotating shaft 33 for engaging the latching part 221. The housing 31 is provided with a torsion spring 34 for controlling the relative movement of adjacent steering components 32. The housing 31 is fixedly connected to the first mounting post 133 by the fixing frame 35. The suction device 3 is a traditional cabinet door locking hardware, with an additional fixing frame 35 for fixing. The fixing frame 35 fixes the suction device 3 to the housing 1. This structure is simple and stable, and has a low production cost.

[0025] In this embodiment, the housing 31 is provided with a side mounting portion 311, the fixing frame 35 is provided with a mounting groove 351 and a secondary mounting groove 352, and a side stop portion 353 provided outside the secondary mounting groove 352. The housing 31 is snapped into the mounting groove 351, the side mounting portion 311 is snapped into the secondary mounting groove 352, one end of the housing 31 abuts against the positioning plate 132, and the other end abuts against the side stop portion 353 through the side mounting portion 311. The positioning of the positioning plate 132 and the side stop portion 353 prevents the suction device 3 from moving along the mounting groove 351, so as to maintain the stability of the structure.

[0026] In this embodiment, the outer shell 1 is provided with a second mounting post 14 at the reinforcing rib 131, and the adapter 4 is provided with a mounting hole 42 corresponding to the second mounting post 14. The adapter 4 is threaded to the outer shell 1 through the second mounting post 14, and the adapter 4 is fixed to the outer shell 1 by a self-tapping screw for easy installation.

[0027] Combination Figure 5 As shown, in this embodiment, the inner buckle plate 22 has reinforcing parts 222 on both sides, and the buckle part 221 is provided on the reinforcing parts 222. The inner buckle plate 22 has square holes 223 arranged in a rectangular array, and the outer buckle plate 21 has rectangular grooves 212 facing the same direction as the square holes 223. The reinforcing parts 222 improve the structural strength of the buckle part 221, and prevent the buckle part 221 from being damaged by the force of the suction device 3 when the filter assembly 2 is disassembled and assembled. The inner buckle plate 22 has a square hole 223 structure, which effectively supports the surface of the filter element 23 and prevents the filter element 23 from deforming.

[0028] Combination Figure 6 As shown, in this embodiment, the outer casing 1 includes a cover 15, and a folding plate 16, an exhaust hood 17, a handle 18, a control component 19, and an airbrush holder 20 disposed on the cover 15. The folding plate 16 is rotatably connected to the opening of the inner cavity 11, the exhaust port 12 is connected to the exhaust hood 17, the handle 18 is disposed between the folding plate 16 and the exhaust hood 17, and the control component 19 and the airbrush holder 20 are respectively disposed on both sides of the exhaust hood 17. The control component 19 includes a rotary switch, a switch button, and a power interface.

[0029] The working principle of this utility model is as follows: the airbrush holder 20 is used to hold the airbrush and prevent damage to it. The folding plate 16, when opened, forms a workspace for printing. An external power supply is connected. The fan 5 is turned on or off via a switch button, and the exhaust volume of the fan 5 is adjusted via a knob switch. The fan 5 causes the smoke and ink generated during printing to flow out through the exhaust port 12 via the filter assembly 2 and the adapter 4. Ink and small particulate impurities are adsorbed onto the filter element 23. When the filter element 23 needs to be replaced, it is accessed from the rectangular groove 212 of the outer buckle plate 21 and pulled... The filter assembly 2 is disengaged from the suction device 3 by the snap fastener 221. The filter assembly 2 can then be removed. The inner snap plate 22 is placed face down and laid flat. The snap fastener strip 211 of the outer snap plate 21 is flipped outward so that the outer snap plate 21 is disengaged from the inner snap plate 22. The filter element 23 can then be replaced. After replacing the filter element 23, the outer snap plate 21 is placed over the inner snap plate 22. The outer snap plate 21 is pressed down so that the snap fastener strip 211 is inserted into the side hole of the inner snap plate 22. The filter assembly 2 is then inserted into the inner cavity 11 towards the adapter 4 until the snap fastener 221 is inserted into the suction device 3, thus completing the replacement of the filter element 23.

[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An exhaust fan with a filter cartridge that is easy to replace, characterized in that, The utility model provides an air filter, which comprises a shell (1), a filter assembly (2), a suction device (3), an adapter (4) and a fan (5), the shell (1) is provided with an inner cavity (11) and an air outlet (12) which are perpendicular to each other, the adapter (4) and the filter assembly (2) are sequentially connected to the inner cavity (11), the fan (5) is arranged between the adapter (4) and the air outlet (12), the shell (1) is provided with a connecting part (13) extending into the adapter (4), the connecting part (13) is connected with the suction device (3) for clamping the filter assembly (2), the filter assembly (2) comprises an outer buckle plate (21), an inner buckle plate (22) and a filter core (23), the side surface of the outer buckle plate (21) is provided with a clamping strip (211), the outer buckle plate (21) is clamped to the inner buckle plate (22) through the clamping strip (211), the filter core (23) is arranged between the outer buckle plate (21) and the inner buckle plate (22), and the inner buckle plate (22) is provided with a buckle part (221) for clamping the suction device (3).

2. The exhaust fan with filter cartridge replacement facilitation of claim 1, wherein: The adapter (4) is provided with an opening groove (41) matched with the connecting part (13), the connecting part (13) comprises a reinforcing rib (131), a positioning plate (132) and a first mounting column (133) integrally formed on the shell (1), the first mounting column (133) is arranged on both sides of the positioning plate (132), the first mounting column (133) is connected with the reinforcing rib (131) around, the first mounting column (133) extends into the adapter (4) through the opening groove (41), and the first mounting column (133) is threadedly connected with the suction device (3).

3. The exhaust fan of claim 2, wherein: The suction device (3) comprises a shell (31), a turning part (32), a rotating shaft (33), a torsional spring (34) and a fixing frame (35), the shell (31) is rotationally connected with two groups of mirror-symmetrically distributed turning parts (32), the turning part (32) is rotationally connected with the rotating shaft (33) for clamping the buckle part (221), the shell (31) is provided with the torsional spring (34) for controlling the opposite movement of adjacent turning parts (32), and the shell (31) is fixedly connected with the first mounting column (133) through the fixing frame (35).

4. The exhaust fan of claim 3, wherein: The shell (31) is provided with a side mounting part (311), the fixing frame (35) is provided with a mounting groove (351), a vice mounting groove (352) and a side blocking part (353) arranged outside the vice mounting groove (352), the shell (31) is clamped in the mounting groove (351), the side mounting part (311) is clamped in the vice mounting groove (352), one end of the shell (31) abuts against the positioning plate (132), and the other end abuts against the side blocking part (353) through the side mounting part (311).

5. The exhaust fan of claim 2, wherein: The shell (1) is provided with a second mounting column (14) at the reinforcing rib (131), the adapter (4) is provided with a mounting hole (42) corresponding to the second mounting column (14), and the adapter (4) is threadedly connected with the shell (1) through the second mounting column (14).

6. The exhaust fan of claim 1, wherein: The inner buckle plate (22) is provided with reinforcing portions (222) on both sides, the buckle portions (221) are arranged on the reinforcing portions (222), and the inner buckle plate (22) is provided with square holes (223) arranged in a rectangular array.

7. The exhaust fan of claim 1, wherein: The shell (1) comprises a cover (15), and a folding plate (16), an air exhaust cover (17), a handle piece (18), a control assembly (19) and a spray pen support (20) arranged on the cover (15); the opening of the inner cavity (11) is rotationally connected with the folding plate (16); the air exhaust opening (12) is connected with the air exhaust cover (17); the handle piece (18) is arranged between the folding plate (16) and the air exhaust cover (17); the control assembly (19) and the spray pen support (20) are arranged on both sides of the air exhaust cover (17) respectively; and the control assembly (19) comprises a rotary knob switch, a switch button and a power supply interface.

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