Dust collection type fresh air system and control method thereof

Abstract

The invention discloses a dust collection type fresh air system and a control method thereof, and relates to the technical field of fresh air devices.The dust collection type fresh air system comprises a shell part, and an air inlet, an output pipeline and a control center are arranged on the outer surface of the shell part; a turbine part and a cleaning part are arranged in the shell part, one end of the turbine part communicates with the air inlet, and the other end of the turbine part communicates with the output pipeline; the control center is used for controlling the operation of the whole equipment; the cleaning part is installed in the shell part and located between the air inlet and the turbine part. The turbine part comprises an annular wheel frame, a dehumidifier is installed on the outer surface of the annular wheel frame, the first end of the annular wheel frame communicates with the air inlet, and the second end of the annular wheel frame communicates with the output pipeline; the first end and the second end are communicated through a dehumidifier or a conical frame. When air is dehumidified through the dehumidifier, dryness of the air is guaranteed. When air enters through the gap of the conical frame, the air inlet efficiency is improved, and then high-power air exchange is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of fresh air devices, and particularly relates to a dust-absorbing fresh air system and a control method thereof. Background Art

[0002] Due to the fixed cross-section of the pipeline and the fixed power of the fan in traditional fresh air devices, such devices maintain the indoor air quality through a preset air supply volume (such as 0.7 - 1 air change per hour), aiming to solve the problem of low ventilation efficiency in enclosed spaces. However, due to the constant air intake volume and the inability to perform secondary treatment on the air, there are significant limitations in practical applications, mainly manifested in the following aspects: 1. The constant air volume system cannot dynamically adjust the operating parameters according to the external environment (such as indoor and outdoor temperature difference, humidity fluctuation) or internal pollution level (such as CO2 concentration, PM2.5 concentration). For example, when a factory needs to quickly replace the air inside the factory, a constant air volume cannot achieve rapid replacement.

[0003] 2. It cannot dehumidify the inhaled air. For example, in some southern regions or coastal areas, due to the humid air, factories need to replace dry air to ensure the dryness and non-rusting of the equipment inside the factory.

[0004] 3. It cannot remove dust from the inhaled air. In some areas with heavy pollution or a large amount of dust, there are high requirements for the cleanliness of the inhaled air. If there is too much dust in the air, it will cause a lot of dust indoors, which will damage the machines.

[0005] In summary, there is a need for a fresh air system that can complete air dehumidification and dust removal and can deliver air with different powers according to needs. Summary of the Invention

[0006] In view of the above problems, the present invention provides a dust-absorbing fresh air system, including a housing part, on the outer surface of which an air inlet, an output pipeline, and a control center are respectively arranged; A turbine part and a cleaning part are arranged inside the housing part. One end of the turbine part is communicated with the air inlet, and the other end is communicated with the output pipeline; the control center is used to control the operation of the entire device; the cleaning part is installed inside the housing part and is located between the air inlet and the turbine part; The turbine part includes an annular wheel frame, on the outer surface of which a dehumidifier is installed, a conical frame is installed inside the annular wheel frame, and a shielding part is installed in the gap on the outer surface of the conical frame; the first end of the annular wheel frame is communicated with the air inlet, and the second end is communicated with the output pipeline; the first end and the second end are communicated through the dehumidifier or through the conical frame.

[0007] Preferably, a screw is rotatably installed in the conical frame, one end of the screw is connected to the motor shaft of the third motor through a coupling, and the third motor is fixedly installed on the second end surface of the annular wheel frame; the middle position of the shielding part is connected to the slider on the screw through a connecting rod.

[0008] Preferably, a limiting bracket is installed on the inner side of the shell part, the limiting bracket is located on the outer surface of the annular wheel frame, and there is a gap between the limiting bracket and the annular wheel frame; a rack is slidably installed on the limiting bracket, the rack is fixedly connected to the outer surface of the dehumidifier, and a second gear meshing with the rack is rotatably installed on the limiting bracket; adjacent second gears are connected by a coupling; the end of the rack away from the dehumidifier is connected to the piston rod of the first electric cylinder, and the first electric cylinder is fixedly installed on the inner side of the shell part.

[0009] Preferably, the turbine part also includes a fixed plate connected to the casing part, and a first gear and a third gear that are meshed with each other are rotatably installed on the surface of the fixed plate; the first gear is transmission-connected to the first gear fixedly installed on the bracket of the fixed plate; the third gear is fixedly connected to the second end face of the annular wheel frame on the side away from the fixed plate.

[0010] Preferably, the dehumidifier includes a dehumidifier shell, an inner cavity is arranged inside the dehumidifier shell; a liquid outlet is arranged on the outer surface of the dehumidifier shell, the liquid outlet is connected with the inner cavity, and a condenser is arranged inside the inner cavity; an air outlet and an air inlet gap are arranged on the surface of the dehumidifier shell, the air inlet gap is opposite to the condenser, and the air outlet, the air inlet gap and the inner cavity are all connected.

[0011] Preferably, the turbine part further comprises an annular water collection groove, which is located inside the shell part and on the outer surface of the dehumidifier, and the annular water collection groove is directly opposite to the liquid outlet.

[0012] Preferably, the cleaning part includes a cleaning shell connected to the interior of the shell part; a transmission-connected reel and a first motor are installed inside the cleaning shell; a filter is wound on the reel; a cleaning wheel and a scraper are also provided inside the cleaning shell, the cleaning wheel is rotatably installed inside the cleaning shell, the outer surface of the cleaning wheel is wrapped with a scraper, and chamfers are provided at both ends of the scraper; the filter passes through the gap between the two cleaning wheels and is wound around another reel.

[0013] Preferably, a cleaning plate is provided inside the cleaning housing, and the cleaning plate is mounted on the outer surface of the scraper; a gap is provided where two cleaning plates are close to each other, and the gap is used for passing the filter screen.

[0014] Preferably, the end of the filter screen away from the cleaning wheel is in a "W" shape.

[0015] A control method for a dust-absorbing fresh air system, using the above-mentioned dust-absorbing fresh air system, includes the following steps: Control the exhaust fan in the output pipeline to work through the control center. The air enters the annular wheel frame from the air inlet, is dehumidified by the dehumidifier and then output through the output pipeline. When it is necessary to increase the ventilation volume, drive the lead screw to rotate through the third motor in the conical frame, and then drive the shielding part away from the conical frame. The air enters the annular wheel frame from the air inlet and quickly passes through the output pipeline through the conical frame. When the maximum amount of air is required, drive the annular wheel frame to rotate through the second motor of the turbine part, and then drive the conical frame to rotate. The air is agitated by the inclined plate inside the shielding part and quickly passes through the output pipeline through the conical frame.

[0016] Due to the adoption of the above technical solution in the present invention, the present invention has the following advantages: 1. The present invention includes a turbine part. The turbine part includes an annular wheel frame. A dehumidifier is installed on the outer surface of the annular wheel frame. A conical frame is installed inside the annular wheel frame. A shielding part is installed in the gap on the outer surface of the conical frame. The first end of the annular wheel frame is communicated with the air inlet, and the second end of the annular wheel frame is communicated with the output pipeline. The first end and the second end are communicated through the dehumidifier or through the conical frame. When the air is dehumidified by the dehumidifier, the dryness of the air is ensured. When the air enters through the gap of the conical frame, the air intake efficiency is improved, and high-power air exchange is realized.

[0017] 2. The present invention drives the reel to rotate through the first motor, and thus realizes the winding of the filter screen. During the winding process of the filter screen, by setting a cleaning plate, the cleaning plate is used as the first cleaning tool for the filter screen. Larger impurities on the filter screen are scraped off by the cleaning plate, and the scraped sundries fall into the dust removal bin. Then when the filter screen passes through the cleaning wheels, the two cleaning wheels clean both sides of the filter screen. The dust on the cleaning wheels is scraped off by the scraper, and the scraped dust falls into the dust removal bin. When the dust removal bin is full, the dust removal bin is taken out by hand for cleaning, improving the dust removal effect of the incoming air. Description of the Drawings

[0018] Figure 1 It is a front view schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a side view and partial enlarged structure schematic diagram of the overall structure of the present invention.

[0020] Figure 3 It is a rear view schematic diagram of the overall structure of the present invention.

[0021] Figure 4 It is a sectional view and partial enlarged schematic diagram of the overall structure of the present invention.

[0022] Figure 5 It is a three-dimensional sectional view and a partially enlarged schematic diagram of the overall structure of the present invention.

[0023] Figure 6 It is a schematic diagram of the structure of the cleaning part of the present invention.

[0024] Figure 7 It is a top view and a partially enlarged schematic diagram of the cleaning part of the present invention.

[0025] Figure 8 It is a schematic diagram of the installation position of the turbine part and the housing of the present invention.

[0026] Figure 9 It is a sectional view schematic diagram of the turbine part of the present invention.

[0027] Figure 10 It is a schematic diagram of the turbine part and a partially enlarged local structure of the present invention.

[0028] Figure 11 It is a schematic diagram of the structure of the annular wheel frame of the present invention.

[0029] Figure 12 It is a schematic diagram of the structure of the dehumidifier of the present invention.

[0030] Figure 13 It is a sectional view of the dehumidifier of the present invention.

[0031] Figure 14 It is a schematic diagram of the structure of the shielding part of the present invention.

[0032] Figure 15 It is a schematic diagram of the control system of the present invention.

[0033] Reference numerals in the drawings: 10, housing part; 101, air inlet; 102, maintenance door; 103, dust removal bin; 104, outer shell; 105, control center; 106, output pipeline; 107, first protective net; 108, second protective net; 109, exhaust fan; 20, cleaning part; 201, cleaning outer shell; 202, reel; 203, first motor; 204, cleaning plate; 205, scraper; 206, cleaning wheel; 207, filter screen; 30. Turbine section; 301. Second motor; 302. First gear; 303. First electric cylinder; 304. Rack; 305. Limit bracket; 306. Second gear; 307. Dehumidifier; 3071. Dehumidifier housing; 3072. Liquid outlet hole; 3073. Inner cavity; 3074. Air outlet; 3075. Condensation pipe; 3076. Air inlet gap; 308. Annular wheel frame; 3081. First circular plate; 3082. Second circular plate; 3083. Connecting plate; 3084. Communication hole; 309. Conical frame; 310. Shielding part; 3101. Shielding rod; 3102. Rubber plate; 3103. Inclined plate; 3104. Connecting rod; 311. Fixed plate; 312. Third gear; 313. Third motor; 314. Lead screw; 315. Annular water accumulation tank. Detailed implementation manners

[0034] The technical solutions of the present invention will be further specifically described below through embodiments in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0035] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inlet", "outlet", "front", "rear", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0036] Embodiment 1. Refer to Figure 1 , a dust-absorbing fresh air system, including a housing section 10. The housing section 10 includes a housing 104, and the housing 104 is a cuboid. One end of the housing 104 is provided with a maintenance door 102, an air inlet 101, and a dust removal bin 103. The maintenance door 102 is located above the air inlet 101 and is used for maintaining the equipment. A second protective net 108 is arranged in the air inlet 101, and the second protective net 108 is used for filtering larger sundries, such as leaves, plastic bags, etc.; the dust removal bin 103 is located below the air inlet 101 (refer to Figure 2 ); on the side of the housing 104 away from the air inlet 101, a control center 105 and an output pipeline 106 are arranged. The control center 105 is located at the upper left of the output pipeline 106 (refer to Figure 3The inlet of the output pipe 106 is connected to the housing 104, and the outlet of the output pipe 106 is provided with a first protective net 107; the output pipe 106 is provided with an exhaust fan 109 (reference Figure 4 The exhaust fan 109 is used to provide power to draw air in from the air inlet 101 and send it out from the first protective net 107 through the turbine part 30 and the output pipe 106.

[0037] refer to Figure 4 A turbine part 30 is arranged inside the shell part 10, one end of the turbine part 30 is connected to the air inlet 101, and the other end is connected to the output pipe 106; the control center 105 is used to control the operation of the entire equipment.

[0038] refer to Figure 8 The turbine part 30 includes an annular wheel frame 308, a dehumidifier 307 is installed on the outer surface of the annular wheel frame 308, a conical frame 309 is installed inside the annular wheel frame 308, and a shielding part 310 is installed in the gap of the outer surface of the conical frame 309; the first end of the annular wheel frame 308 is connected to the air inlet 101, and the second end of the annular wheel frame 308 is connected to the output pipe 106; the first end and the second end are connected through the dehumidifier 307 or through the conical frame 309. The wind is dehumidified by the dehumidifier 307, thereby ensuring the dryness of the wind.

[0039] refer to Figure 9 A lead screw 314 is rotatably installed in the conical frame 309, one end of the lead screw 314 is connected to the motor shaft of the third motor 313 through a coupling, and the other end is rotatably connected to the end of the conical frame 309, and the third motor 313 is fixedly installed on the second end surface of the annular wheel frame 308; the middle position of the shielding portion 310 is connected to the slider on the lead screw 314 through a connecting rod 3104.

[0040] refer to Figure 14 The shielding part 310 includes a shielding rod 3101, a rubber plate 3102, an inclined plate 3103 and a connecting rod 3104. The rubber plate 3102 is arranged on the outer surface of the shielding rod 3101. When the shielding rod 3101 is opened, the rubber plate 3102 contacts the air inlet gap 3076, thereby sealing the air inlet gap 3076 and protecting the air inlet gap 3076. A connecting rod 3104 is rotatably installed at the middle position of the inner surface of the rubber plate 3102, and the other end of the connecting rod 3104 is rotatably connected to the slider on the screw 314. An inclined plate 3103 is arranged on the inner surface of the shielding rod 3101, and the inclined plate 3103 is used to stir the wind, thereby forming the wind into turbine wind.

[0041] Specifically, the third motor 313 drives the lead screw 314 to rotate and then drives the slider to move axially along the lead screw 314, thereby driving the shielding part 310 to leave the conical frame 309, so that wind can enter from the gap of the conical frame 309; or driving the shielding part 310 to fit into the gap of the conical frame 309, thereby sealing the gap of the conical frame 309.

[0042] refer to Figure 8 A limiting bracket 305 is installed on the inner side of the shell 10, and the limiting bracket 305 is located on the outer surface of the annular wheel frame 308, and there is a gap between the limiting bracket 305 and the annular wheel frame 308; a rack 304 is slidably installed on the limiting bracket 305, and the rack 304 is fixedly connected to the outer surface of the dehumidifier 307, and a second gear 306 that meshes with the rack 304 is rotatably installed on the limiting bracket 305; adjacent second gears 306 are connected by a coupling transmission; one end of one of the racks 304 away from the dehumidifier 307 is connected to the piston rod of the first electric cylinder 303, and the first electric cylinder 303 is fixedly installed on the inner side of the shell 104. Specifically, the rack 304 is driven to move away from the annular wheel frame 308 through the contraction of the first electric cylinder 303, thereby driving the second gear 306 to rotate. The rotation of the second gear 306 drives all the second gears 306 to rotate through the coupling, thereby driving all the racks 304 and the dehumidifier 307 to move away from the annular wheel frame 308. The dehumidifier 307 is separated from the annular wheel frame 308, thereby facilitating the rotation of the annular wheel frame 308.

[0043] refer to Figure 9 The turbine part 30 also includes a fixed plate 311 connected to the shell part 10, and a first gear 302 and a third gear 312 that are meshed with each other are rotatably installed on the surface of the fixed plate 311; the first gear 302 is transmission-connected to a second motor 301 fixedly installed on a bracket of the fixed plate 311; the third gear 312 is fixedly connected to the second end face of the annular wheel frame 308 on the side away from the fixed plate 311.

[0044] refer to Figure 11 The annular wheel frame 308 is formed by connecting the first annular plate 3081 and the second annular plate 3082 through a connecting plate 3083. The interior of the annular wheel frame 308 is conical, and the internal space of the end close to the first annular plate 3081 is small. There is a gap between adjacent connecting plates 3083, and the adjacent connecting plates 3083 are used to install the dehumidifier 307; the first annular plate 3081 is provided with connecting holes 3084 in a circular array, and the connecting holes 3084 are connected to the air outlet 3074.

[0045] Specifically, the second motor 301 drives the first gear 302 to rotate, the first gear 302 drives the third gear 312, which in turn drives the annular wheel frame 308, the conical frame 309 and the shielding part 310 to rotate, thereby realizing turbine air suction and improving the efficiency of the incoming air.

[0046] Reference Figure 12 , the dehumidifier 307 includes a dehumidifier housing 3071, and an inner cavity 3073 is provided inside the dehumidifier housing 3071; a liquid outlet hole 3072 is provided on the outer surface of the dehumidifier housing 3071, and the liquid outlet hole 3072 communicates with the inner cavity 3073, and a condensing pipe 3075 is provided inside the inner cavity 3073; an air outlet 3074 and an air inlet gap 3076 are provided on the surface of the dehumidifier housing 3071 (Reference Figure 13 ), the air inlet gap 3076 is directly opposite to the condensing pipe 3075, and the air outlet 3074, the air inlet gap 3076 and the inner cavity 3073 are all communicated.

[0047] Furthermore, there is no baffle on the side of the dehumidifier housing 3071. Therefore, when several dehumidifier housings 3071 are installed on the outer surface of the annular wheel frame 308, they are communicated. At the same time, both ends of the condensing pipe 3075 are respectively communicated with the condensate input pipe and the condensate output pipe of the condensing system, thereby realizing the circulation of the condensate (which can be Freon) and completing the dehumidification work of the air; the air enters through the air inlet gap 3076, passes through the condensing pipe 3075 and then enters the inner cavity 3073, and then enters the output pipe 106 through the air outlet 3074, and the condensed water enters the annular water collecting tank 315 through the liquid outlet hole 3072.

[0048] Reference Figure 5 , the turbine part 30 further includes an annular water collecting tank 315, the annular water collecting tank 315 is located inside the housing part 10 and on the outer surface of the dehumidifier 307, and the annular water collecting tank 315 is directly opposite to the liquid outlet hole 3072. The condensed water in the liquid outlet hole 3072 enters the annular water collecting tank 315, which is convenient for collection and treatment.

[0049] Reference Figure 4 , the dust-absorbing fresh air system further includes a cleaning part 20, the cleaning part 20 is installed inside the housing part 10, and the cleaning part 20 is located between the air inlet 101 and the turbine part 30. The cleaning part 20 is used to remove the floating dust and debris on the scraper 205 and improve the quality of the incoming air.

[0050] Reference Figure 6, the cleaning unit 20 includes a cleaning housing 201 connected to the inside of the housing unit 10; a reel 202 and a first motor 203 are installed inside the cleaning housing 201, and the reel 202 and the first motor 203 are in transmission connection; a filter net 207 is wound around the reel 202; a cleaning wheel 206 and a scraper 205 are also arranged inside the cleaning housing 201, the cleaning wheel 206 is rotatably installed inside the cleaning housing 201, the outer surface of the cleaning wheel 206 is wrapped with the scraper 205, and chamfers are arranged at both ends of the scraper 205; the filter net 207 passes through the gap between the two cleaning wheels 206 and is wound around another reel 202. Reference Figure 7 , the scraper 205 is installed closely against the outer surface of the cleaning wheel 206, chamfers are arranged at both ends of the cleaning wheel 206, and by arranging the chamfers, the impurities adhered to the surface of the cleaning wheel 206 are scraped off by the scraper 205, thereby realizing the cleaning of the scraper 205.

[0051] Reference Figure 7 , a cleaning plate 204 is arranged inside the cleaning housing 201, and the cleaning plate 204 is installed on the outer surface of the scraper 205; there is a gap between the two adjacent cleaning plates 204 for the filter net 207 to pass through; one end of the filter net 207 away from the cleaning wheel 206 is in a "W" shape. By arranging the cleaning plate 204, the cleaning plate 204 serves as the first cleaning tool for the filter net 207, and the relatively large impurities on the filter net 207 are scraped off through the cleaning of the cleaning plate 204, and the scraped sundries fall into the dust removal bin 103, realizing the collection of sundries.

[0052] Working principle: Mode 1: When a smaller air volume is required, the exhaust fan 109 in the output duct 106 is controlled to work by the control center 105, the air enters the annular wheel frame 308 from the air inlet 101, and passes through the condensing pipe 3075 in the dehumidifier 307 (the air enters from the air inlet gap 3076, passes through the condensing pipe 3075 for dehumidification, and then enters the communication hole 3084 through the air outlet 3074, and the communication hole 3084 is communicated with the output duct 106) for dehumidification and then is output through the output duct 106, and the output air is dry air.

[0053] Mode 2: When a larger ventilation volume is required, the third motor 313 in the conical frame 309 works to drive the lead screw 314 to rotate, thereby driving the shielding part 310 away from the conical frame 309, opening the gap on the conical frame 309, and the air enters the annular wheel frame 308 from the air inlet 101 and quickly passes through the output duct 106 through the gap of the conical frame 309.

[0054] Mode 3: When the maximum amount of air is required, the first electric cylinder 303 contracts to drive the rack 304 box to move away from the annular wheel frame 308 (Reference Figure 10(), thereby driving the rotation of the second gear 306. The rotation of the second gear 306 drives the rotation of all the second gears 306 through the coupling, thereby driving all the racks 304 and the dehumidifier 307 to move away from the annular wheel frame 308, facilitating the rotation of the annular wheel frame 308. At the same time, the third motor 313 in the conical frame 309 works to drive the rotation of the lead screw 314, thereby driving the shielding portion 310 away from the conical frame 309 and opening the gap on the conical frame 309. The second motor 301 drives the rotation of the first gear 302, and the first gear 302 drives the third gear 312, thereby driving the rotation of the annular wheel frame 308, the conical frame 309, and the shielding portion 310, thereby realizing turbine air suction and maximizing the air intake efficiency.

[0055] In the above three modes, the first motor 203 drives the rotation of the reel 202, thereby realizing the winding of the filter net 207. During the winding process of the filter net 207, by setting the cleaning plate 204, the cleaning plate 204 is used as the first cleaning tool for the filter net 207, and the relatively large impurities on the filter net 207 are scraped off by the cleaning plate 204, and the scraped debris falls into the dust collection bin 103. Then when the filter net 207 passes through the cleaning wheels 206, the two cleaning wheels 206 clean both sides of the filter net 207, and the dust cleaned on the cleaning wheels 206 is scraped off by the scraper 205, and the scraped dust falls into the dust collection bin 103. When the dust collection bin 103 is full, the dust collection bin 103 is taken out manually for cleaning.

[0056] This embodiment further includes a control center 105, as Figure 15 shown. The control center 105 includes a main controller, a human-machine interaction display screen, an information transmission module, a storage module, and a power module, and the control center 105 is electrically connected to the human-machine interaction display screen, the information transmission module, the storage module, the power module, as well as the first motor 203, the second motor 301, the first electric cylinder 303, and the third motor 313. The control center 105 is used to control the operation of the entire dust-absorbing fresh air system. The human-machine interaction display screen is used to set the switching of the three modes in the dust-absorbing fresh air system, and the power module is used to provide stable power for the control terminal. The storage module is used to store the operation information data of the entire sound insulation device.

[0057] Embodiment 2. A control method for a dust-absorbing fresh air system, using the dust-absorbing fresh air system of Embodiment 1, includes the following steps: The control center 105 controls the operation of the exhaust fan 109 in the output pipeline 106, and the air enters the annular wheel frame 308 from the air inlet 101, is dehumidified by the dehumidifier 307, and then is output through the output pipeline 106. When it is necessary to increase the ventilation volume, the third motor 313 in the conical frame 309 drives the lead screw 314 to rotate, thereby driving the shielding part 310 away from the conical frame 309. The wind enters the annular wheel frame 308 from the air inlet 101, passes through the conical frame 309 and is quickly output through the output pipe 106. When the maximum amount of wind is required, the second motor 301 of the turbine part 30 drives the annular wheel frame 308 to rotate, thereby driving the conical frame 309 to rotate. The wind is agitated by the inclined plate 3103 inside the shielding part 310, passes through the conical frame 309 and is quickly output through the output pipe 106.

Claims

1. A dust-absorbing fresh air system, characterized in that It comprises a housing portion (10), wherein an air inlet (101), an output pipe (106) and a control center (105) are respectively arranged on the outer surface of the housing portion (10); A turbine section (30) and a cleaning section (20) are arranged inside the housing section (10); one end of the turbine section (30) is in communication with the air inlet (101), and the other end is in communication with the output pipe (106); the control center (105) is used to control the operation of the entire device; the cleaning section (20) is installed inside the housing section (10), and the cleaning section (20) is located between the air inlet (101) and the turbine section (30); The turbine part (30) comprises an annular wheel frame (308), a dehumidifier (307) is installed on the outer surface of the annular wheel frame (308), a conical frame (309) is installed inside the annular wheel frame (308), and a shielding part (310) is installed in a gap on the outer surface of the conical frame (309); a first end of the annular wheel frame (308) is connected to an air inlet (101), and a second end of the annular wheel frame (308) is connected to an output pipe (106); the first end and the second end are connected through the dehumidifier (307) or through the conical frame (309).

2. The dust-absorbing fresh air system according to claim 1, wherein A lead screw (314) is rotatably mounted in the conical frame (309); one end of the lead screw (314) is connected to the motor shaft of a third motor (313) via a coupling; the third motor (313) is fixedly mounted on the second end surface of the annular wheel frame (308); and the middle position of the shielding portion (310) is connected to a slider on the lead screw (314) via a connecting rod (3104).

3. The vacuum fresh air system according to claim 1, characterized in that, A limit bracket (305) is installed on the inner side of the housing portion (10), the limit bracket (305) is located on the outer surface of the annular wheel frame (308), and a gap is provided between the limit bracket (305) and the annular wheel frame (308); a rack (304) is slidably installed on the limit bracket (305), the rack (304) is fixedly connected to the outer surface of the dehumidifier (307), and a second gear (306) meshing with the rack (304) is rotatably installed on the limit bracket (305); adjacent second gears (306) are connected by a coupling; one end of the rack (304) away from the dehumidifier (307) is connected to the piston rod of the first electric cylinder (303), and the first electric cylinder (303) is fixedly installed on the inner side of the housing portion (10).

4. A suction-type fresh air system according to any one of claims 1 to 3, characterized in that The turbine part (30) further comprises a fixing plate (311) connected to the housing part (10); a first gear (302) and a third gear (312) meshing with each other are rotatably mounted on the surface of the fixing plate (311); the first gear (302) is transmission-connected to a first gear (302) fixedly mounted on a bracket of the fixing plate (311); and the third gear (312) is fixedly connected to a second end face of the annular wheel frame (308) on a side away from the fixing plate (311).

5. A dust-absorbing fresh air system according to claim 1, characterized in that, The dehumidifier (307) includes a dehumidifier housing (3071) with an inner cavity (3073) provided inside; an liquid outlet hole (3072) is provided on the outer surface of the dehumidifier housing (3071), and the liquid outlet hole (3072) communicates with the inner cavity (3073). A condensing pipe (3075) is provided inside the inner cavity (3073); an air outlet (3074) and an air inlet gap (3076) are provided on the surface of the dehumidifier housing (3071). The air inlet gap (3076) faces the condensing pipe (3075), and the air outlet (3074), the air inlet gap (3076), and the inner cavity (3073) are all in communication.

6. The vacuum fresh air system according to claim 5, characterized in that, The turbine part (30) further includes an annular water accumulation groove (315) which is located inside the housing part (10) and on the outer surface of the dehumidifier (307), and the annular water accumulation groove (315) faces the liquid outlet hole (3072).

7. The vacuum fresh air system according to claim 1, wherein The cleaning part (20) includes a cleaning housing (201) connected to the inside of the housing part (10); a reel (202) and a first motor (203) which are in transmission connection are installed inside the cleaning housing (201); a filter net (207) is wound around the reel (202); a cleaning wheel (206) and a scraper (205) are further provided inside the cleaning housing (201). The cleaning wheel (206) is rotatably installed inside the cleaning housing (201), the outer surface of the cleaning wheel (206) is wrapped with the scraper (205), and chamfers are provided at both ends of the scraper (205); the filter net (207) passes through the gap between the two cleaning wheels (206) and is wound around another reel (202).

8. A dust-absorbing fresh air system according to claim 7, characterized in that, A cleaning plate (204) is provided inside the cleaning housing (201), and the cleaning plate (204) is installed on the outer surface of the scraper (205); there is a gap at the place where the two cleaning plates (204) are close to each other, and the gap is used for the filter net (207) to pass through.

9. The vacuum fresh air system according to claim 8, characterized in that One end of the filter net (207) away from the cleaning wheel (206) is in a "W" shape.

10. A control method for a dust-absorbing fresh air system, characterized in that, Using the dust-absorbing fresh air system according to any one of claims 1-9, includes the following steps: Controlling the working of the exhaust fan (109) in the output pipeline (106) through the control center (105), the air enters the annular wheel frame (308) from the air inlet (101), is dehumidified by the dehumidifier (307) and then output through the output pipeline (106); When it is necessary to increase the ventilation volume, the third motor (313) in the conical frame (309) drives the lead screw (314) to rotate, thereby driving the shielding part (310) to leave the conical frame (309). The air enters the annular wheel frame (308) from the air inlet (101), passes through the conical frame (309) and is quickly output through the output pipeline (106); When the maximum amount of wind is required, the second motor (301) of the turbine section (30) drives the annular wheel frame (308) to rotate, and then drives the conical frame (309) to rotate. The wind is agitated by the inclined plate (3103) inside the shielding section (310), passes through the conical frame (309) and is quickly output through the output pipe (106).

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