Air conditioning purification and ventilation device

Abstract

The present invention discloses an air conditioning purification and ventilation device, including an exhaust duct, a filter slot is provided in the middle of the exhaust duct along the vertical direction, and a flip shell is provided on the upper end surface of the filter slot, and a cylindrical chamber connected to the filter slot is provided in the middle of the flip shell; a dust filter assembly, the dust filter assembly includes a suspension and a filter frame, the suspension is installed in the flip shell, and the suspension is longitudinally slidably connected to the flip shell, and the filter frame is fixedly installed at the lower end of the suspension. The present invention has an automatic flip filter frame, which is convenient for dust accumulated inside the filter frame to be flipped to the outside, and ensures that the dust accumulated on the filter frame can be discharged to the outside when the air conditioner is exhausted, thereby achieving the purpose of automatically purifying the internal environment of the exhaust duct, and the filter frame does not need to be disassembled during the entire cleaning process, which greatly increases the continuous use time of the exhaust duct and saves cleaning costs.

Description

Technical Field

[0001] The invention relates to the technical field of ventilation devices, in particular to an air-conditioning purification ventilation device. Background Art

[0002] At present, when household air conditioners are ventilated, ventilation ducts are usually used for ventilation. In order to prevent dust in the external air from entering the room through the ventilation duct, a filter screen is usually installed in the ventilation duct. However, during the exhaust operation through the ventilation duct, dust is easily accumulated on the indoor side of the filter screen. If the dust is not cleaned for a long time, it will stick to and adhere to the surface of the filter screen, thereby affecting the normal use of the ventilation duct and reducing the environmental sanitation in the duct. Most of the existing processing methods require manual disassembly and cleaning or regular replacement of new filter screens, which is not only difficult to operate but also has a high replacement cost, which is not conducive to long-term continuous use of the ventilation duct. Summary of the invention

[0003] The present application provides an air conditioning purification and ventilation device for solving the problems raised in the background technology.

[0004] The present invention is achieved in that:

[0005] An air conditioning purification and ventilation device, comprising

[0006] An exhaust duct, wherein a filter slot is provided in the middle of the exhaust duct in the vertical direction, and a flip shell is provided on the upper end surface of the filter slot, and a cylindrical chamber connected to the filter slot is provided in the middle of the flip shell;

[0007] A dust filter assembly, the dust filter assembly comprising a suspension and a filter frame, the suspension being installed in the flip shell, and the suspension being longitudinally slidably connected to the flip shell, and the filter frame being fixedly installed at the lower end of the suspension;

[0008] A lifting assembly mounted on the outer side of the exhaust duct, used to control the height of the suspension in the flip shell; and

[0009] The net brushing mechanism comprises a power part and a dynamic brush part. The power part is rotatably installed in the exhaust duct, and the dynamic brush part is fixedly installed at the end of the power part.

[0010] By adopting the above technical solution, a filter slot can be opened in the middle of the exhaust duct during use, and the filter slot is connected to the columnar chamber at the same time, so that the suspension can drive the filter frame to move arbitrarily from the filter slot to the columnar chamber. When the exhaust duct needs to be filtered through the filter frame, the filter frame can be extended into the filter slot to ensure that the exhaust duct is shielded and protected. When the filter frame needs to be flipped, the filter frame can be moved to the columnar chamber, which is convenient for flipping the filter frame through the suspension to ensure that the filter frame can be flipped on both sides for use. In this way, during the exhaust process, the filter frame faces one side of the room to collect dust and The air conditioner can then be turned over to face the indoor side, so that the dust can be discharged to the outdoors when the air conditioner is exhausted again. At the same time, the lifting and adjustment of the dust filter assembly is controlled by a lifting assembly installed on the outer side of the exhaust duct, and a brush mesh mechanism is also installed in the exhaust duct. During the exhaust process in the duct, the power unit can be driven to rotate, and then the power unit can drive the dynamic brush unit to scrape the filter frame toward the indoor side. In this way, even if some dust that cannot be blown away is attached to the filter frame, it can be removed by the action of the dynamic brush unit, thereby ensuring better cleaning of the interior of the exhaust duct, increasing the continuous use time of the exhaust duct, and reducing the disassembly and cleaning frequency of the filter frame.

[0011] Furthermore, the exhaust duct is divided into an air inlet end and an exhaust end for installing the brush net mechanism, the air inlet end and the exhaust end are respectively arranged on both sides of the filter net slot, and the air inlet end is sealed and connected with the exhaust end.

[0012] By adopting the above technical solution, when the exhaust duct is installed and used, the air inlet end needs to be installed on the side facing the indoor room, and the exhaust end needs to be installed on the side facing the outdoor room. In this way, it can be ensured that the removed dust can be better discharged to the outdoor room, and the brush net mechanism is installed at the exhaust end. In this way, the dust scraped off the filter frame by the brush net mechanism will fall to the exhaust end, ensuring that it can be discharged from the exhaust end to the outdoor room when the air conditioner is exhausting.

[0013] Furthermore, a longitudinal slide groove is provided on one side of the flip shell, and a shielding cover is installed on the top of the flip shell, and the shielding cover is fixedly connected to the flip shell by bolts.

[0014] By adopting the above technical solution, after a longitudinal slide groove is opened on one side of the flip shell, it can be ensured that the horizontal frame can be extended from the outside to the inside of the flip shell, so that the electric telescopic rod can drive the suspension to be raised and lowered through the horizontal frame. At the same time, the setting of the shielding cover facilitates the shielding and protection of the top of the flip shell, and the setting of the shielding cover also facilitates better maintenance operations on the inside of the flip shell in the future.

[0015] Furthermore, the suspension includes a motor frame and an angle motor, the angle motor is fixedly mounted on the lower end surface of the motor frame, a connecting frame is mounted on the upper end surface of the motor frame, and mounting grooves are symmetrically provided on the connecting frame.

[0016] By adopting the above technical solution, when the suspension is in use, the angle motor can be installed at the lower end of the horizontal frame through the motor frame, and by installing the connecting frame on the upper end surface of the motor frame, the connecting frame can be fixed to the horizontal frame through the mounting groove mounting bolts.

[0017] Furthermore, the filter frame includes two mesh frame plates and a circular filter screen that are arranged opposite to each other. The circular filter screen is installed between the two mesh frame plates, and the two mesh frame plates are fixedly connected.

[0018] By adopting the above technical solution, when the filter rack is in use, the circular filter can be clamped and fixed by two relative mesh frame plates, and the circular filter can be clamped and fixed on all sides by the mesh frame plates, thereby ensuring that the circular filter is more sturdy during filtering and use. At the same time, it is also convenient for the mesh frame plates to drive the circular filter to be flexibly lifted and rotated. The mesh frame plates on both sides can be fixed to each other in the form of buckles, or they can be fixed to each other by bolts or other methods, as long as the circular filter is stably clamped.

[0019] Furthermore, a half-axle shell is provided in the middle of the upper end surface of the mesh frame plate, the half-axle shell is fixedly connected to the mesh frame plate, and a connecting hole connected to the output shaft of the angle motor is opened on the side of the half-axle shell.

[0020] By adopting the above technical solution, after the mesh frame plates on both sides are buckled and fixed to each other, the half-axle shells on the upper end faces can also form a shaft sleeve that matches the output shaft of the angle motor. This makes it convenient for the operator to fix the half-axle shell and the output shaft of the angle motor to each other by passing a pin or a bolt rod through the connecting hole.

[0021] Furthermore, the lifting assembly includes an electric telescopic rod and a horizontal frame, the electric telescopic rod is fixedly installed on the outer side of the exhaust duct, one end of the horizontal frame is fixed to the head of the electric telescopic rod, and the other end of the horizontal frame extends into the cylindrical chamber and is fixedly connected to the connecting frame, and a side shield shell for shielding the electric telescopic rod is also fixedly installed on the outer side of the exhaust duct.

[0022] By adopting the above technical solution, when the lifting assembly needs to be used, the height of the horizontal frame can be adjusted by the electric telescopic rod. At the same time, in order to ensure the safety of the use of the electric telescopic rod, a side baffle shell can be buckled on the outer surface of the exhaust duct, so that the electric telescopic rod can be conveniently covered by the side baffle shell, ensuring that the electric telescopic rod can be more safely telescopically adjusted in the side baffle shell.

[0023] Furthermore, the power unit includes a reverse impeller and a drive shaft, the drive shaft is installed at the center of the reverse impeller, and the drive shaft is fixedly connected to the reverse impeller.

[0024] By adopting the above technical solution, when the power unit is in use, the reverse impeller can be installed on the sleeve through the drive shaft, so that the reverse impeller can rotate stably in the exhaust duct. When the air conditioner exhausts air through the exhaust duct, the reverse impeller can be driven to rotate, and then the drive shaft can be driven to rotate synchronously, which is convenient for driving the dynamic brush unit through the drive shaft.

[0025] Furthermore, a bracket is fixedly installed in the middle of the exhaust end, a shaft sleeve for installing the drive shaft is arranged in the middle of the bracket, the shaft sleeve and the bracket are integrally formed, and a limiting rod of the limiting shaft sleeve is vertically fixed on the drive shaft.

[0026] By adopting the above technical solution, when the power unit needs to be installed, the bracket needs to be installed in the exhaust duct first. After the bracket is fixedly installed in the exhaust duct, the power unit can be inserted into the limiting sleeve in the middle of the bracket through the driving shaft for rotation and installation. At the same time, by installing a limiting rod on the driving shaft, it can be ensured that the driving shaft can only rotate in the sleeve and cannot slide, thereby achieving the purpose of limiting the position of the dynamic brush unit.

[0027] Furthermore, the dynamic brush portion includes a brush plate and hard bristles, the brush plate is vertically fixed to one end of the driving shaft, and the hard bristles are evenly arranged on the side of the brush plate.

[0028] By adopting the above technical solution, when the dynamic brush part is used, it is fixedly installed on the end of the driving shaft through the brush plate, so that the hard brush bristles can be driven by the brush plate to scrape and brush the circular filter.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] (1) The present invention has an automatic flip filter frame, which is convenient for flipping the filter frame to the outside after dust accumulates inside, ensuring that the dust accumulated on the filter frame can be discharged to the outside when the air conditioner is exhausting, thereby achieving the purpose of automatically purifying the internal environment of the exhaust duct, and the entire cleaning process does not require the filter frame to be disassembled, which greatly increases the continuous use time of the exhaust duct and saves the cleaning cost.

[0031] (2) The present invention uses the exhaust air of the air conditioner to drive the reverse blades to drive the drive shaft and the moving brush part to rotate, thereby driving the hard bristles to clean the dust on the outer surface of the circular filter. The dust on the filter frame is further cleaned by the cleaning of the hard bristles, thereby increasing the dust cleaning effect. At the same time, the exhaust air is used as the cleaning power, and there is no need to provide a separate power source, thereby achieving the purpose of energy-saving cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 is a perspective view of the device of the present invention;

[0034] Figure 2 yes Figure 1 a left side view of the device shown;

[0035] Figure 3 yes Figure 2 A cross-sectional view of the device along the AA direction;

[0036] Figure 4 yes Figure 1 A three-dimensional diagram of the exhaust duct and the lifting assembly shown in FIG.

[0037] Figure 5 yes Figure 4 a top view of the device shown;

[0038] Figure 6 yes Figure 4 a front view of the device shown;

[0039] Figure 7 yes Figure 6 A cross-sectional view of the device shown along direction BB;

[0040] Figure 8 yes Figure 3 A perspective view of the dust filter assembly shown;

[0041] Fig. 9 yes Figure 8 a front view of the device shown;

[0042] Fig.10 yes Figure 8 a left side view of the device shown;

[0043] Fig.11 yes Figure 3 A three-dimensional diagram of the screen brushing mechanism shown;

[0044] Fig.12 yes Fig.11 a front view of the device shown;

[0045] Fig.13 yes Fig.11 A top view of the device shown.

[0046] In the figure: 1. exhaust duct; 101. air inlet end; 102. exhaust end; 11. filter slot; 12. flip shell; 121. longitudinal slide groove; 122. shielding cover; 13. cylindrical chamber; 14. bracket; 141. bushing; 15. side baffle shell; 2. dust filter assembly; 21. suspension; 211. motor frame; 212. angle motor; 213. connecting frame; 214. mounting slot; 22. filter frame; 221. mesh frame plate; 222. circular filter; 223. half-axle shell; 224. connecting hole; 3. lifting assembly; 31. electric telescopic rod; 32. horizontal frame; 4. brushing mechanism; 41. power unit; 411. reverse impeller; 412. drive shaft; 413. limit rod; 42. dynamic brush unit; 421. brush plate; 422. hard bristles. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0048] Example 1

[0049] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7As shown, an air conditioning purification and ventilation device includes an exhaust duct 1, a dust filter assembly 2, a lifting assembly 3 and a brushing net mechanism 4. A filter slot 11 is provided in the middle of the exhaust duct 1 in the vertical direction, and a flip shell 12 is provided on the upper end surface of the filter slot 11. A cylindrical chamber 13 connected to the filter slot 11 is provided in the middle of the flip shell 12. The exhaust duct 1 is divided into an air inlet end 101 and an air outlet end 102 for installing the brushing net mechanism 4. The air inlet end 101 and the air outlet end 102 are respectively provided on both sides of the filter slot 11, and the air inlet end 101 and the air outlet end 102 are sealed and connected. When the exhaust duct 1 is installed and used, the air inlet end 101 needs to be installed on the side facing the indoor room, and the exhaust end 102 needs to be installed on the side facing the outdoor room. In this way, it can be ensured that the removed dust can be better discharged to the outdoor room, and the brush net mechanism 4 is installed at the exhaust end 102, so that the dust scraped off from the filter frame 22 by the brush net mechanism 4 will fall to the exhaust end 102, ensuring that it can be discharged to the outdoor room from the exhaust end 102 when the air conditioner is exhausting air. A longitudinal slide groove 121 is provided on one side of the flip shell 12, and a shielding cover 122 is installed on the top of the flip shell 12, and the shielding cover 122 is fixedly connected to the flip shell 12 by bolts. When a longitudinal slide groove 121 is opened on one side of the flip shell 12, it can ensure that the horizontal frame 32 can extend from the outside to the inside of the flip shell 12, so that the electric telescopic rod 31 can drive the suspension 21 to be raised and lowered through the horizontal frame 32. At the same time, the shielding cover 122 is provided to facilitate the shielding and protection of the top of the flip shell 12, and the shielding cover 122 is also provided to facilitate better maintenance operations on the inside of the flip shell 12 in the future.

[0050] After the exhaust duct 1 is installed, it can be connected to the exhaust duct of the air conditioner through one side of the air inlet end 101 for use. During the exhaust process of the air conditioner, the filter frame 22 needs to be inserted into the filter slot 11. In this way, under the support of the mesh frame plate 221, the circular filter 222 can stably block and filter the exhaust duct, effectively preventing external dust from entering the room through the duct. However, the long-term exhaust operation of the air conditioner is likely to hang indoor dust on the inner side of the circular filter 222. After long-term use, a large amount of dust accumulates, which can easily cause the circular filter 222 to be unable to be used for normal ventilation. In this way, it is necessary to start the electric telescopic rod 31 to drive the dust filter assembly 2 to rise as a whole, and ensure that the filter frame 22 is completely moved from the filter slot 11 to the cylindrical chamber 13. Then the angle motor 212 can be started to drive the filter frame 22 to rotate 180°, so that the inner and outer side positions of the filter frame 22 can be interchanged, and then the air can be The filter frame 22 is reinserted into the filter slot 11 through the electric telescopic rod 31. It should be noted that after the circular filter 222 is installed in the middle of the mesh frame plate 221, the outer side surface of the mesh frame plate 221 is higher than the outer surface of the circular filter 222. In this way, when dust adheres to the outer surface of the circular filter 222, the dust will not be scraped off through the filter slot 11 during the lifting process. In this way, it can be ensured that after the circular filter 222 is flipped, the dust will rotate from the inner side of the circular filter 222 to the outer side of the circular filter 222. Then, when the air conditioner is exhausted next time, the dust on the circular filter 222 can be discharged to the outside, thereby completing the purpose of purifying the inside of the exhaust duct 1. The entire cleaning process does not require the circular filter 222 to be disassembled, which is very convenient to use. In this way, the workflow can be matched with the controller to set the corresponding program in advance, so that the operator can start the cleaning with one click, or it can be started regularly through the controller, which is very flexible to use.

[0051] Reference Figure 8 , Fig. 9 and Fig.10As shown, the dust filter assembly 2 includes a suspension 21 and a filter frame 22. The suspension 21 is installed in the flip shell 12, and the suspension 21 is longitudinally slidably connected to the flip shell 12, and the filter frame 22 is fixedly installed at the lower end of the suspension 21. The suspension 21 includes a motor frame 211 and an angle motor 212. The angle motor 212 is fixedly installed on the lower end surface of the motor frame 211. The upper end surface of the motor frame 211 is installed with a connecting frame 213, and the connecting frame 213 is symmetrically provided with mounting grooves 214. When the suspension 21 is used, the angle motor 212 can be installed at the lower end of the horizontal frame 32 through the motor frame 211, and by installing the connecting frame 213 on the upper end surface of the motor frame 211, it is convenient for the connecting frame 213 to be fixed to the horizontal frame 32 by installing bolts through the mounting grooves 214. The filter frame 22 includes two relatively arranged mesh frame plates 221 and a circular filter 222. The circular filter 222 is installed between the two mesh frame plates 221, and the two mesh frame plates 221 are fixedly connected. When the filter frame 22 is used, the circular filter 222 can be clamped and fixed by the two relatively arranged mesh frame plates 221. The circular filter 222 is clamped and fixed by the mesh frame plates 221, thereby ensuring that the circular filter 222 is more solid during filtering and use. At the same time, it is also convenient for the mesh frame plates 221 to drive the circular filter 222 to be flexibly lifted and rotated. The mesh frame plates 221 on both sides can be fixed to each other in the form of buckles, or can be fixed to each other by bolts or other methods, as long as the circular filter 222 is stably clamped. A half-shaft shell 223 is provided in the middle of the upper end surface of the mesh frame plate 221. The half-shaft shell 223 is fixedly connected to the mesh frame plate 221, and a connecting hole 224 connected to the output shaft of the angle motor 212 is opened on the side of the half-shaft shell 223. When the mesh frame plates 221 on both sides are fastened together, the half-axle shells 223 on the upper end surface can also form a shaft sleeve 141 that matches the output shaft of the angle motor 212. This makes it convenient for the operator to fix the half-axle shell 223 and the output shaft of the angle motor 212 to each other by passing a pin or a bolt rod through the connecting hole 224.

[0052] Reference Figure 5 and Figure 6As shown, the lifting assembly 3 installed on the outer side of the exhaust duct 1 is used to control the height of the suspension 21 in the flip shell 12. The lifting assembly 3 includes an electric telescopic rod 31 and a horizontal frame 32. The electric telescopic rod 31 is fixedly installed on the outer side of the exhaust duct 1. One end of the horizontal frame 32 is fixed to the head of the electric telescopic rod 31, and the other end of the horizontal frame 32 extends into the cylindrical chamber 13 and is fixedly connected to the connecting frame 213. A side baffle 15 for shielding the electric telescopic rod 31 is also fixedly installed on the outer side of the exhaust duct 1. When the lifting assembly 3 needs to be used, the height of the horizontal frame 32 can be adjusted by the electric telescopic rod 31. At the same time, in order to ensure the safety of the use of the electric telescopic rod 31, a side baffle 15 can be buckled on the outer side of the exhaust duct 1, so that the electric telescopic rod 31 can be shielded by the side baffle 15, so that the electric telescopic rod 31 can be more safely telescopically adjusted in the side baffle 15.

[0053] Reference Fig.11 As shown, the net brush mechanism 4 includes a power part 41 and a dynamic brush part 42 . The power part 41 is rotatably installed in the exhaust duct 1 , and the dynamic brush part 42 is fixedly installed at the end of the power part 41 .

[0054] Example 2

[0055] Reference Fig.11 , Fig.12 and Fig.13 As shown, an air conditioning purification and ventilation device includes an exhaust duct 1, a dust filter assembly 2, a lifting assembly 3 and a brush net mechanism 4, the brush net mechanism 4 includes a power unit 41 and a dynamic brush unit 42, the power unit 41 is rotatably installed in the exhaust duct 1, and the dynamic brush unit 42 is fixedly installed at the end of the power unit 41. The power unit 41 includes a reverse impeller 411 and a drive shaft 412, the drive shaft 412 is installed at the center of the reverse impeller 411, and the drive shaft 412 is fixedly connected to the reverse impeller 411. When the power unit 41 is in use, the reverse impeller 411 can be installed on the shaft sleeve 141 through the drive shaft 412, so that the reverse impeller 411 can be stably rotated in the exhaust duct 1, and when the air conditioner is exhausted through the exhaust duct 1, the reverse impeller 411 can be driven to rotate, and then the drive shaft 412 can be driven to rotate synchronously, so that the dynamic brush unit 42 can be driven by the drive shaft 412.

[0056] Reference Fig.13As shown, the exhaust duct 1 is divided into an air inlet end 101 and an exhaust end 102 for installing the brush net mechanism 4. The air inlet end 101 and the exhaust end 102 are respectively arranged on both sides of the filter net slot 11, and the air inlet end 101 is sealed and connected with the exhaust end 102. A bracket 14 is fixedly installed in the middle of the exhaust end 102, and a sleeve 141 for installing the drive shaft 412 is arranged in the middle of the bracket 14. The sleeve 141 and the bracket 14 are integrally formed, and a limiting rod 413 of the limiting sleeve 141 is also vertically fixed on the drive shaft 412. When the power unit 41 needs to be installed, the bracket 14 needs to be installed in the exhaust duct 1 first. After the bracket 14 is fixedly installed in the exhaust duct 1, the power unit 41 can be inserted into the limiting sleeve 141 in the middle of the bracket 14 through the driving shaft 412 for rotation and installation. At the same time, by installing a limiting rod 413 on the driving shaft 412, it can be ensured that the driving shaft 412 can only rotate in the sleeve 141 but not slide, thereby achieving the purpose of limiting the position of the dynamic brush unit 42.

[0057] Reference Fig.11 and Fig.12 As shown, the dynamic brush portion 42 includes a brush plate 421 and hard bristles 422. The brush plate 421 is vertically fixed to one end of the driving shaft 412, and the hard bristles 422 are evenly arranged on the side of the brush plate 421. When the dynamic brush portion 42 is in use, the brush plate 421 is fixedly mounted on the end of the driving shaft 412, so that the hard bristles 422 can be driven by the brush plate 421 to scrape the circular filter 222.

[0058] When the air does not start the exhaust operation, the brush screen mechanism will not rotate. When there is wind in the exhaust duct, the reverse impeller can be driven to rotate, so that the drive shaft and the dynamic brush part can be driven to rotate through the reverse blades. The hard bristles on the dynamic brush part are supported on the outer surface of the circular filter. In this way, the dust on the outer surface of the circular filter can be cleaned by the hard bristles without providing a separate power source, thereby achieving the purpose of energy-saving cleaning.

[0059] The device provided in the embodiment of the present invention has the same implementation principle and technical effects as those in Embodiment 1. For the sake of brief description, for matters not mentioned in this embodiment, reference may be made to the corresponding contents in Embodiment 1.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air conditioning purification and ventilation device, characterized in that: include: An exhaust duct (1), wherein a filter slot (11) is provided in the middle of the exhaust duct (1) in the vertical direction, and a flip shell (12) is provided on the upper end surface of the filter slot (11), and a columnar chamber (13) is provided in the middle of the flip shell (12) and is connected to the filter slot (11); A dust filter assembly (2), the dust filter assembly (2) comprising a suspension (21) and a filter frame (22), the suspension (21) being installed in the flip shell (12), the suspension (21) being longitudinally slidably connected to the flip shell (12), and the filter frame (22) being fixedly installed at the lower end of the suspension (21); A lifting assembly (3) mounted on the outer surface of the exhaust duct (1) and used for controlling the height of the suspension (21) in the flip shell (12); and a brushing mechanism (4), the brushing mechanism (4) comprising a power part (41) and a moving brush part (42), the power part (41) being rotatably mounted in the exhaust duct (1), the moving brush part (42) being fixedly mounted at the end of the power part (41), the exhaust duct (1) being divided into an air inlet end (101) and an air outlet end (102) for mounting the brushing mechanism (4), the air inlet end (101) and the air outlet end (102) being respectively arranged on both sides of the filter slot (11), and the air inlet end (101) and the air outlet end (102) being sealedly connected, a longitudinal slide groove (121) being provided on one side of the flip shell (12), and a shielding cover (122) being installed on the top of the flip shell (12), the shielding cover (122) being connected to the filter slot (11). The suspension (21) is fixedly connected to the flip shell (12) by bolts. The suspension (21) comprises a motor frame (211) and an angle motor (212). The angle motor (212) is fixedly mounted on the lower end surface of the motor frame (211). A connecting frame (213) is mounted on the upper end surface of the motor frame (211). The connecting frame (213) is symmetrically provided with mounting grooves (214). The lifting assembly (3) comprises an electric telescopic rod (31) and a horizontal frame (32). The electric telescopic rod (31) is fixedly mounted on the outer side surface of the exhaust duct (1). One end of the horizontal frame (32) is fixed to the head of the electric telescopic rod (31), and the other end of the horizontal frame (32) extends into the columnar chamber (13) and is fixedly connected to the connecting frame (213). A side shielding shell (15) for shielding the electric telescopic rod (31) is also fixedly mounted on the outer side surface of the exhaust duct (1).

2. An air conditioning, purification and ventilation device according to claim 1, characterized in that: The filter screen frame (22) comprises two mesh frame plates (221) arranged opposite to each other and a circular filter screen (222); the circular filter screen (222) is installed between the two mesh frame plates (221), and the two mesh frame plates (221) are fixedly connected.

3. An air conditioning, purification and ventilation device according to claim 2, characterized in that: A semi-axle shell (223) is provided in the middle of the upper end surface of the mesh frame plate (221); the semi-axle shell (223) is fixedly connected to the mesh frame plate (221); and a connecting hole (224) connected to the output shaft of the angle motor (212) is provided on the side surface of the semi-axle shell (223).

4. The air conditioning, purification and ventilation device according to claim 1, characterized in that: The power unit (41) comprises a reverse impeller (411) and a drive shaft (412); the drive shaft (412) is installed at the center of the reverse impeller (411), and the drive shaft (412) is fixedly connected to the reverse impeller (411).

5. The air conditioning, purification and ventilation device according to claim 4, characterized in that: A bracket (14) is fixedly mounted in the middle of the exhaust end (102); a shaft sleeve (141) for mounting the drive shaft (412) is arranged in the middle of the bracket (14); the shaft sleeve (141) and the bracket (14) are integrally formed; and a limiting rod (413) of the limiting shaft sleeve (141) is also vertically fixed on the drive shaft (412).

6. The air conditioning, purification and ventilation device according to claim 5, characterized in that: The dynamic brush portion (42) comprises a brush plate (421) and hard bristles (422); the brush plate (421) is vertically fixed to one end of the driving shaft (412); and the hard bristles (422) are evenly arranged on the side of the brush plate (421).

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