Air duct system of an air purifier

Abstract

The present invention discloses an air duct system of an air purifier, including an air outlet plate, an air duct, a fan, an upper shell, an air guide assembly, a lower shell, a bottom shell, a filter screen rear cover, a filter screen, a bacterial liquid box compartment and a sliding cover. While achieving air purification, the present invention sprays bacterial liquid into the surrounding environment through the bacterial liquid box to achieve environmental disinfection; under the joint action of the air guide assembly and the supporting mechanism, the cylindrical filter screen is fixed and not easy to fall off, thereby reducing noise and increasing air volume.

Description

Technical Field

[0001] The present invention relates to the technical field of air purifiers, and in particular to an air duct system of an air purifier, which is suitable for exhausting air from an air purifier. Background Art

[0002] In recent years, more and more people are using air purifiers. Air purifiers can absorb, decompose and transform pollutants in the air, effectively improving the cleanliness of the air. The purification of air purifiers is mainly through the exhaust of the fan, which draws polluted air into the body, and finally discharges it through the air outlet through the adsorption and filtration of the filter element. The existing air purifiers use direct exhaust of the fan, which only filters impurities in the air and cannot disinfect the surrounding environment. The installation of the filter is too cumbersome and cannot be sealed and fixed. Summary of the invention

[0003] The purpose of the present invention is to provide an air duct system for an air purifier in view of the above-mentioned existing problems.

[0004] The above-mentioned object of the present invention is achieved by the following technical solutions:

[0005] The duct system of the air purifier comprises an upper shell, a top cover of the upper shell is provided with an air outlet plate, the air outlet plate is provided with an air outlet hole, the air duct and the fan are arranged in the upper shell, the bottom of the air duct is connected with the air outlet of the fan, the bottom of the air duct does not cover all the air outlets of the fan, a bacteria liquid box warehouse is arranged on the outer side of the upper shell, a sliding cover is provided on the side cover of the bacteria liquid box warehouse, a bacteria liquid box is arranged in the bacteria liquid box warehouse, a mist outlet is arranged on the bacteria liquid box warehouse, one end of the air inlet channel extends to the top of the fan and is located outside the air duct, the other end of the air inlet channel is connected with the middle of the mist outlet channel of the bacteria liquid box, the mist outlet end of the mist outlet channel of the bacteria liquid box is connected with the mist outlet on the bacteria liquid box warehouse, the bottom of the upper shell is connected with an air guide component, the air guide component is connected with the top of the lower shell, the fan is connected with the air guide component, a filter screen rear cover is arranged on the rear side of the lower shell, a filter screen is arranged in the lower shell, the bottom of the lower shell is connected with the bottom shell, and the charging port is installed in the bottom shell.

[0006] As mentioned above, the upper part of the fan is the air outlet, and the fan fasteners are distributed on the outer side of the upper part of the fan. The lower part of the fan is the air inlet, and the outer side of the lower part of the fan is provided with an annular limiting step, and the outer side of the lower part of the fan is provided with a fan fixing part. The fan fasteners are fastened with the duct fasteners on the air duct.

[0007] As mentioned above, the upper shell side wall is provided with an upper shell fixing hole, and the upper shell fixing hole is connected to the bacteria liquid box compartment; the upper shell fixing columns are evenly distributed on the inner wall of the bottom of the upper shell.

[0008] As described above, the air guide assembly includes an air guide bracket, on which an upper positioning column, a lower positioning column, a fan fixing column, a wire slot, and a sensor slot are provided, an annular sealing pressure surface is provided at the bottom of the air guide bracket, an annular air guide arc plate is provided on the inner ring of the annular sealing pressure surface, the annular air guide arc plate is located below the air inlet of the fan, a support ring is provided on the outer periphery of the air guide bracket, an annular groove limit step that is adapted to be connected to the annular limit step is provided on the air guide bracket, the upper positioning column is connected to the upper shell fixing column by screws, and the fan fixing column is connected to the fan fixing part.

[0009] As described above, the lower housing is provided with a lower housing fixing hole, a card slot, a magnetic suction hole, a lower buckling groove and a support frame positioning hole.

[0010] The fixing hole of the lower shell is arranged on the top inner wall of the lower shell, the fixing hole of the lower shell is connected with the lower positioning column, a circle of card grooves is distributed on the top inner wall of the lower shell, a support ring is arranged in the card groove, a filter barrel replacement port is arranged on the rear side wall of the lower shell, the filter barrel replacement port cover is provided with a filter screen back cover, a magnetic hole for placing a magnetic suction sheet is installed on the upper part of the filter barrel replacement port, a magnetic suction sheet is installed in the magnetic hole, a lower buckling groove is arranged on the bottom of the filter barrel replacement port, the bottom terminal of the filter screen back cover is inserted into the lower buckling groove, the top of the filter screen back cover is attracted to the magnetic suction sheet in the magnetic hole, a support frame positioning hole is opened on the bottom surface of the lower shell, a support mechanism is arranged in the support frame positioning hole, and a cylindrical filter screen is arranged on the support mechanism.

[0011] As described above, the support mechanism includes an upper supporting end, a limiting end, a limiting beveled ring surface, a positioning sleeve, and a support frame. The top of the support frame is the upper supporting end. A circle of limiting beveled ring surfaces are arranged around the top of the support end. The limiting beveled ring surface is adapted to be connected with the limiting beveled ring on the outer periphery of the bottom of the cylindrical filter screen. A limiting end is arranged on the side of the support frame. The limiting end is located below the positioning hole of the support frame. The overall width of the limiting end and the support frame is greater than the aperture of the positioning hole of the support frame. Positioning sleeves are evenly distributed on the bottom of the support frame. Cross-shaped positioning ribs are distributed on the top of the positioning sleeves. A spring is arranged in the positioning sleeve. The top and bottom of the spring are respectively against the positioning ribs and the bottom supporting end surface of the bottom shell.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. The present invention not only purifies the air, but also sprays the bacterial liquid into the surrounding environment through the bacterial liquid box to achieve environmental disinfection;

[0014] 2. The joint action of the air guide assembly and the supporting mechanism makes the cylindrical filter screen fixed and not easy to fall off, thus reducing noise and increasing air volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall exploded schematic diagram of the present invention.

[0016] Figure 2 It is a schematic diagram of the shell explosion of the present invention.

[0017] Figure 3 It is a structural diagram of the fan.

[0018] Figure 4 It is a structural schematic diagram of the upper shell.

[0019] Figure 5 It is a structural diagram of the air duct.

[0020] Figure 6 It is a schematic diagram of the top view structure of the air guide component.

[0021] Figure 7 It is a schematic diagram of the cross-sectional structure of the air guide component.

[0022] Figure 8 It is a structural diagram of the lower shell.

[0023] Fig. 9 It is a cross-sectional schematic diagram of the support mechanism.

[0024] Fig.10 It is a top view schematic diagram of the support mechanism.

[0025] Fig.11 It is a schematic diagram of the structure of the bottom shell.

[0026] Fig.12 It is a schematic diagram of the structure of the filter back cover.

[0027] Fig.13 It is a schematic diagram of the wind path of the present invention.

[0028] In the figure:

[0029] 2- fan; 3- housing; 4- filter back cover; 5- filter; 6- bacterial liquid box compartment; 7- sliding cover;

[0030] 21- fan fastening piece; 22- fan fixing part; 23- annular limiting step;

[0031] 31-upper housing; 32-air duct; 33-air guide assembly; 34-lower housing; 35-charging port; 36-support mechanism; 37-spring; 38-bottom housing;

[0032] 311-upper housing fixing hole; 312-upper housing fixing column;

[0033] 321- air duct fastener;

[0034] 331-upper positioning column; 332-lower positioning column; 333-fan fixing column; 334-cable slot; 335-sensor slot; 336-air guide bracket; 337-annular sealing pressure surface; 338-support ring; 339-annular air guide arc plate; 3310-annular groove limit ladder;

[0035] 341- lower shell fixing hole; 342- card slot; 343- magnetic suction hole; 344- lower buckle groove; 345- support frame positioning hole; 346- filter barrel replacement port;

[0036] 361-upper support end; 362-limiting end; 363-limiting oblique annular surface; 364-positioning sleeve; 365-support frame;

[0037] 3642-Location ribs;

[0038] 381-charging port slot; 382-bottom positioning stud; 383-bottom support end surface;

[0039] 41-magnetic card slot; 42-positioning plate; 43-filter back cover socket. DETAILED DESCRIPTION

[0040] In order to facilitate those skilled in the art to understand and implement the present invention, the present invention is further described in detail below in conjunction with embodiments. It should be understood that the implementation examples described herein are only used to illustrate and explain the present invention and are not used to limit the present invention. Example 1

[0041] like Figure 1-2 As shown, an air duct system of an air purifier includes an air outlet plate, an air duct 32, a fan 2, an upper shell 31, an air guide component 33, a lower shell 34, a bottom shell 38, a filter back cover 4, a filter 5, a bacterial liquid box compartment 6 and a sliding cover 7.

[0042] The top cover of the upper shell 31 is provided with an air outlet plate, and an air outlet hole is opened on the air outlet plate. The air duct 32 and the fan 2 are arranged in the upper shell 31. The bottom of the air duct 32 is connected to the air outlet of the fan 2. The bottom of the air duct 32 does not cover all the air outlets of the fan 2. A bacteria liquid box warehouse 6 is arranged on the outer side of the upper shell 31. A sliding cover 7 is provided on the side cover of the bacteria liquid box warehouse 6 to prevent the bacteria liquid box in the bacteria liquid box warehouse 6 from being contaminated. A bacteria liquid box is arranged in the bacteria liquid box warehouse 6. A mist outlet is arranged on the bacteria liquid box warehouse 6. One end of the air inlet channel It extends above the fan 2 and is located outside the air duct 32. The other end of the air inlet channel is connected to the middle of the mist outlet channel of the bacteria liquid box. The mist outlet end of the mist outlet channel of the bacteria liquid box is connected to the mist outlet on the bacteria liquid box bin 6. The bottom of the upper shell 31 is connected to the air guide component 33, and the air guide component 33 is connected to the top of the lower shell 34. The fan 2 is connected to the air guide component 33. The rear side of the lower shell 34 is provided with a filter back cover 4, and a filter 5 is provided in the lower shell 34. The bottom of the lower shell 34 is connected to the bottom shell 38. The charging port 35 is installed in the bottom shell 38.

[0043] like Figure 3 As shown, the upper part of the fan 2 is an air outlet, and a fan fastening member 21 is distributed on the outer side of the upper part of the fan 2. The lower part of the fan 2 is an air inlet. An annular limiting step 23 is arranged on the outer side of the lower part of the fan 2. The annular limiting step 23 is similar to the annular step arranged on the side of an inverted cone. An annular groove limiting step 3310 matching the shape of the annular limiting step 23 is arranged on the air guide bracket 336. A fan fixing part 22 is arranged on the outer side of the lower part of the fan 2. The fan fastening member 21 is fastened with the air duct fastening member 321 on the air duct 32. The annular limiting step 23 is adaptively connected with the annular groove limiting step 3310 on the air guide bracket 336. The annular step diameter at the bottom of the annular limiting step 23 is smaller than the annular step diameter at the top. The annular limiting step 23 facilitates limiting the position of the air guide assembly 33 to prevent the air guide assembly 33 from being unevenly fitted with the fan 2, thereby reducing suction and increasing noise. The fan fixing part 22 is connected to the fan fixing column 333 on the air guide assembly 33, and the fixing screw passes through the fan fixing column 333 and is threadedly connected to the fan fixing part 22.

[0044] like Figure 4 As shown, the side wall of the upper shell 31 is provided with an upper shell fixing hole 311, and the upper shell fixing hole 311 is connected to the bacterial liquid box compartment 6; the bottom inner wall of the upper shell 31 is evenly distributed with upper shell fixing columns 312. The upper shell fixing columns 312 are connected to the upper positioning columns 331 of the air guide assembly 33.

[0045] like Figure 5 As shown, different numbers of air duct fastening members 321 are distributed around the air duct 32 to facilitate fastening the air duct 32 to the fan fastening member 21 of the fan 2 .

[0046] like Figure 6 , 7As shown, the air guide assembly 33 includes an upper positioning column 331, a lower positioning column 332, a fan fixing column 333, a wire clamping groove 334, a sensor clamping groove 335, an air guide bracket 336, an annular sealing pressure surface 337, a support ring 338, an annular air guide arc plate 339, and an annular groove limit step 3310.

[0047] The wind guide bracket 336 is provided with an upper positioning column 331, a lower positioning column 332, a fan fixing column 333, a wire clamping groove 334, and a sensor clamping groove 335. The bottom of the wind guide bracket 336 is provided with an annular sealing pressure surface 337, and the inner ring of the annular sealing pressure surface 337 is provided with an annular wind guide arc plate 339, and the annular wind guide arc plate 339 is located below the air inlet of the fan 2. A support ring 338 is provided on the outer periphery of the wind guide bracket 336.

[0048] The upper positioning column 331 is connected to the upper shell fixing column 312 of the upper shell 31 by screws, thereby fixing the air guide assembly 33 to the upper shell 31, and the lower positioning column 332 can be fixed to the lower shell fixing hole 341 on the lower shell 34 by screws, thereby fixing the air guide assembly 33 to the lower shell 34. Sensor card slots 335 are distributed on the edge of the air guide bracket 336 to facilitate fixing the air sensor, and a certain number of card slots 334 are distributed around it to facilitate fixing the wires of the air sensor on the air guide assembly 33.

[0049] The cross-section of the annular air guide arc plate 339 is in an arc shape. The annular air guide arc plate 339 is annular cylindrical as a whole. The upper diameter of the annular air guide arc plate 339 is smaller than the lower diameter. The side line of the longitudinal section of the annular air guide arc plate 339 is an arc shape, which is convenient for introducing the air filtered by the filter 5 into the fan 2; the annular sealing pressure surface 337 is an annular plane. When the cylindrical filter 5 is placed into the lower outer shell 34, the EVA cotton at the top of the cylindrical filter 5 is squeezed with the annular sealing pressure surface 337, thereby sealing the cylindrical filter 5.

[0050] like Figure 8As shown, the lower shell 34 is provided with a lower shell fixing hole 341, a card slot 342, a magnetic hole 343, a lower buckle groove 344 and a support frame positioning hole 345. Among them, the lower shell fixing hole 341 is set on the top inner wall of the lower shell 34, and the lower shell fixing hole 341 is connected with the lower positioning column 332 in the air guide component 33 to fix the position of the air guide component 33 and the fan 2. A circle of card slots 342 are distributed on the top inner wall of the lower shell 34, which can cooperate with the support ring 338 in the air guide component 33 to provide support for the air guide component 33 to prevent the air guide component 33 from falling from the lower shell 34 due to unstable support. A filter barrel replacement port 346 is provided on the rear side wall of the lower shell 34. The filter barrel replacement port 346 cover is provided with a filter screen rear cover 4, and a useful filter is installed on the upper part of the filter barrel replacement port. A magnetic hole 343 is provided for placing a magnetic sheet, and a magnetic sheet can be installed in the magnetic hole 343, which can be used to close the filter back cover 4; a lower snap-fit ​​groove 344 is provided at the bottom of the filter barrel replacement port 346, and the bottom terminal of the filter back cover 4 can be inserted into the lower snap-fit ​​groove 344, and the top of the filter back cover 4 is attracted to the magnetic sheet in the magnetic hole 343, so that the filter back cover 4 is fixed to the filter barrel replacement port 346 and covers the filter barrel replacement port 346, and a support frame positioning hole 345 is provided on the bottom surface of the lower shell 34, and a support mechanism 36 is provided in the support frame positioning hole 345, and the cylindrical filter 5 is provided on the support mechanism 36.

[0051] like Fig. 9 , 10 As shown, the support mechanism 36 includes an upper support end 361, a limiting end 362, a limiting beveled annular surface 363, a positioning sleeve 364, and a support frame 365. The top of the support frame 365 is the upper support end 361, which is used to support the cylindrical filter screen 5. A circle of limiting beveled annular surfaces 363 are arranged around the top of the upper support end 361. The limiting beveled annular surface 363 is similar to the annular surface formed by the top annular cut of a cylinder. The limiting beveled annular surface 363 is adapted to be connected with the limiting beveled ring on the outer periphery of the bottom of the cylindrical filter screen 5, which can effectively prevent the installation dislocation of the cylindrical filter screen 5, so that the top of the filter screen 5 is not firmly combined with the annular sealing pressure surface 337 of the air guide assembly and is not sealed, thereby reducing the purification efficiency and increasing the noise. The side of the support frame 365 is provided with a limit end 362, which is located below the support frame positioning hole 345. The overall width of the limit end 362 and the support frame 365 is greater than the aperture of the support frame positioning hole 345. When the cylindrical filter screen 5 is not placed on the support mechanism 36, the support frame 365 is prevented from popping out of the support frame positioning hole 345 under the action of the spring. Four positioning sleeves 364 are evenly distributed at the bottom of the support frame 365, and the top of the positioning sleeve 364 is distributed with a cross-shaped positioning rib 3642 for supporting and squeezing the spring. A spring is arranged in the positioning sleeve 364, and the top and bottom of the spring are respectively against the positioning rib 3642 and the bottom support end surface 383 of the bottom shell 38.

[0052] like Fig.11 As shown, the bottom shell 38 is provided with a charging port slot 381, a bottom positioning stud 382 and a bottom support end face 383. Among them, the charging port slot 381 is used to fix the charging port 35, so as to provide power for the entire air purifier; the bottom positioning stud 382 is connected to the shell positioning stud set at the bottom of the lower shell 34 by screws. When the cylindrical filter 5 is installed, the support mechanism 36 moves downward to squeeze the spring 37, thereby causing the spring to be compressed, aligning the top of the filter 5 with the annular sealing pressure surface 337 of the air guide component, and the top of the filter 5 is tightly fitted with the annular sealing pressure surface 337 of the air guide component to fix the cylindrical filter 5. When the cylindrical filter 5 needs to be taken out, the filter 5 is pressed down and the reverse steps are taken out.

[0053] like Fig.12 As shown, the filter back cover 4 is provided with a magnetic card slot 41, a positioning plate 42 and a filter back cover socket 43. The filter back cover socket 43 is provided at the bottom of the filter back cover 4, and the top of the filter back cover 4 is provided with a magnetic card slot 41. After the filter 5 is installed, the filter back cover socket 43 is inserted into the lower buckle groove 344, and then the magnetic attraction of the magnetic card slot 41 interacts with the magnetic attraction of the magnetic hole 343, so that the filter back cover 4 is buckled on the filter barrel replacement port 346, and the positioning plate 42 is embedded in the positioning groove on the outer edge of the filter barrel replacement port 346.

[0054] It should be noted that the specific embodiments described in the present invention are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the attached claims.

Claims

1. An air duct system for an air purifier, comprising an upper housing (31), characterized in that: The top cover of the upper shell (31) is provided with an air outlet plate, the air outlet plate is provided with air outlet holes, the air duct (32) and the fan (2) are arranged in the upper shell (31), the bottom of the air duct (32) is connected to the air outlet of the fan (2), the bottom of the air duct (32) does not cover all the air outlets of the fan (2), a bacterial liquid box compartment (6) is arranged on the outside of the upper shell (31), a sliding cover (7) is provided on the side cover of the bacterial liquid box compartment (6), a bacterial liquid box is arranged in the bacterial liquid box compartment (6), a mist outlet is arranged on the bacterial liquid box compartment (6), and one end of the air inlet channel extends to the top of the fan (2) and is located in the air duct (32). On the outside, the other end of the air inlet channel is connected to the middle of the mist outlet channel of the bacteria liquid box, the mist outlet end of the mist outlet channel of the bacteria liquid box is connected to the mist outlet on the bacteria liquid box bin (6), the bottom of the upper shell (31) is connected to the air guide component (33), the air guide component (33) is connected to the top of the lower shell (34), the fan (2) is connected to the air guide component (33), a filter screen rear cover (4) is arranged on the rear side of the lower shell (34), a filter screen (5) is arranged in the lower shell (34), the bottom of the lower shell (34) is connected to the bottom shell (38), and the charging port (35) is installed in the bottom shell (38). The upper portion of the fan (2) is an air outlet, a fan fastening member (21) is distributed on the outer side of the upper portion of the fan (2), the lower portion of the fan (2) is an air inlet, an annular limiting step (23) is arranged on the outer side of the lower portion of the fan (2), a fan fixing portion (22) is arranged on the outer side of the lower portion of the fan (2), the fan fastening member (21) is fastened with an air duct fastening member (321) on the air duct (32), The side wall of the upper shell (31) is provided with an upper shell fixing hole (311), and the upper shell fixing hole (311) is connected to the bacterial liquid box compartment (6); the bottom inner wall of the upper shell (31) is evenly distributed with upper shell fixing columns (312). The air guide assembly (33) comprises an air guide bracket (336), on which an upper positioning column (331), a lower positioning column (332), a fan fixing column (333), a wire clamping groove (334), and a sensor clamping groove (335) are arranged; an annular sealing pressure surface (337) is arranged at the bottom of the air guide bracket (336); an annular air guide arc plate (339) is arranged on the inner ring of the annular sealing pressure surface (337); the annular air guide arc plate (339) is located below the air inlet of the fan (2); a support ring (338) is arranged on the outer periphery of the air guide bracket (336); an annular groove limit step (3310) adapted to be connected to the annular limit step (23) is arranged on the air guide bracket (336); the upper positioning column (331) is connected to the upper housing fixing column (312) by screws; the fan fixing column (333) is connected to the fan fixing portion (22); The lower shell (34) is provided with a lower shell fixing hole (341), a clamping slot (342), a magnetic suction hole (343), a lower buckling groove (344) and a support frame positioning hole (345). The lower shell fixing hole (341) is arranged on the top inner wall of the lower shell (34), the lower shell fixing hole (341) is connected to the lower positioning column (332), a circle of card grooves (342) are distributed on the top inner wall of the lower shell (34), a support ring (338) is clamped in the card groove (342), a filter barrel replacement port (346) is arranged on the rear side wall of the lower shell (34), a filter screen rear cover (4) is provided on the cover of the filter barrel replacement port (346), and a magnetic suction hole (346) for placing a magnetic suction sheet is installed on the upper part of the filter barrel replacement port (346). 3), a magnetic suction sheet is installed in the magnetic suction hole (343), a lower buckle groove (344) is provided at the bottom of the filter barrel replacement port (346), the bottom terminal of the filter screen back cover (4) is inserted into the lower buckle groove (344), the top of the filter screen back cover (4) is attracted to the magnetic suction sheet in the magnetic suction hole (343), a support frame positioning hole (345) is opened on the bottom surface of the lower shell (34), a support mechanism (36) is provided in the support frame positioning hole (345), and the cylindrical filter screen (5) is arranged on the support mechanism (36), The support mechanism (36) comprises an upper support end (361), a limiting end (362), a limiting beveled ring surface (363), a positioning sleeve (364), and a support frame (365). The top of the support frame (365) is the upper support end (361). A circle of limiting beveled ring surfaces (363) are arranged around the top of the support end (361). The limiting beveled ring surfaces (363) are adapted to be connected with the limiting beveled rings on the outer periphery of the bottom of the cylindrical filter screen (5). The side of the support frame (365) is provided with the limiting end (362). The limiting end (362) is arranged on the side of the support frame (365). (362) is located below the support frame positioning hole (345), the overall width of the limiting end (362) and the support frame (365) is greater than the aperture of the support frame positioning hole (345), positioning sleeves (364) are evenly distributed at the bottom of the support frame (365), and cross-shaped positioning ribs (3642) are distributed at the top of the positioning sleeves (364). A spring is arranged in the positioning sleeves (364), and the top and bottom of the spring are respectively against the positioning ribs (3642) and the bottom support end surface (383) of the bottom shell (38). When the cylindrical filter screen (5) is installed, the support mechanism (36) moves downward to compress the spring (37) to align the top of the filter screen (5) with the annular sealing pressure surface (337) of the air guide component, so that the top of the filter screen (5) is tightly fitted with the annular sealing pressure surface (337) of the air guide component.

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