Self-cleaning flaring type ventilation device for heating ventilation air conditioner and method of self-cleaning flaring type ventilation device

Abstract

The invention discloses a self-cleaning flaring type ventilation device for a heating ventilation air conditioner and a method of the self-cleaning flaring type ventilation device, and belongs to the technical field of heating ventilation air conditioners. The self-cleaning flaring type ventilation device comprises an air inlet channel, a water tank, a flaring pipe and a draught fan; the assembled filter assembly comprises an assembled filter structure, a rotating structure and a locking structure; a recoil assembly is mounted on the flared pipe; the back-flushing assembly comprises a pressurizing and blowing assembly, a conveying assembly and a scraping assembly. Through the mode, impurities in the filter holes of the assembled filter assembly are cleaned according to the backflushing principle, meanwhile, the upper part of the assembled filter assembly is scraped and cleaned, and the cleaned impurities are blown into the water tank for cleaning treatment, so that flying dust is not caused, and the cleaning effect is more obvious; according to the invention, the rotary cleaning of the assembled filter assembly can be realized by adopting a non-driving principle.

Description

Technical Field

[0001] The present invention relates to the technical field of heating, ventilation and air conditioning, and in particular to a self-cleaning flared ventilation device for heating, ventilation and air conditioning and a method thereof. Background Art

[0002] There are many structures of ventilation devices for HVAC. For example, Chinese invention patent CN112923473B discloses an anti-clogging expansion-type ventilation device for HVAC, which drives the filter belt on the top of the ventilation shell to rotate through a motor, so that the top side of the filter belt rotates to the right end, and when the attachments on the outside of the filter belt rotate to the top of the cleaning brush, the bristles on the top side of the cleaning brush clean the filter belt.

[0003] However, the above structure still has the following problems: first, it uses a cleaning brush to clean the filter belt, and the cleaning ability of the bristles is limited. During the brushing process, the bristles may brush dust particles into the gaps in the filter belt, which increases the ventilation pressure of the filter belt and increases the risk of dust particles being sucked into the air inlet; since the cleaning brush is located on the right side of the air inlet, the cleaning bristles will also cause dust, resulting in a certain amount of dust in the air around the air inlet, affecting the cleanliness of the subsequent air intake, causing a lot of dust to be sucked into the air inlet; secondly, it drives the active roller to rotate through a motor, thereby driving the filter belt on the top of the ventilation housing to rotate and clean the attachments on the outside of the filter belt, so a separate power drive device is also required.

[0004] Based on this, the present invention designs a self-cleaning flared ventilation device for HVAC and a method thereof to solve the above problems. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a self-cleaning flared ventilation device and method for HVAC.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A self-cleaning flared ventilation device for HVAC, comprising an air inlet passage, an flared pipe and a fan, wherein the upper end of the air inlet passage is fixedly connected to the bottom of the flared pipe; a rainproof assembly for preventing rain and dust is detachably connected to the upper end of the flared pipe; a fan for sucking outside air into the flared pipe through a gap between the flared pipe and the rainproof assembly and then into the air inlet passage is fixedly installed inside the air inlet passage through a bracket;

[0008] The air inlet passage is internally installed with an assembled filter assembly for filtering the air and cooperating with the recoil assembly to achieve self-cleaning when rotating;

[0009] The assembled filter assembly comprises an assembled filter structure, a rotating structure and a locking structure; the upper and lower ends of the assembled filter structure are respectively connected to the locking structure and the rotating structure;

[0010] A backflushing assembly for cleaning the assembled filter assembly is installed on the flared tube;

[0011] The recoil assembly includes a booster blowing assembly, a conveying assembly and a scraping assembly; the two ends of the booster blowing assembly are respectively located inside the flaring pipe and the air inlet channel, the upper end of the conveying assembly and the upper end of the booster blowing assembly are respectively located on the upper and lower sides of the fan-shaped filter, the upper end of the conveying assembly and the scraping assembly are both located inside the flaring pipe, and the scraping assembly is connected to the upper end of the conveying assembly;

[0012] A water tank is also included; one end of the recoil assembly is placed in the water in the water tank.

[0013] Furthermore, the assembled filtering structure includes a fan-shaped filter plate, a straight shaft, a first arc-shaped groove, a second arc-shaped groove, an outer ring, a transverse connecting plate and a top circular plate; a plurality of groups of transverse connecting plates are fixedly connected at equal intervals in the circumferential direction of the top circular plate, and the outer ends of the transverse connecting plates are fixedly connected to the inner wall of the outer ring located on the outside, and a plurality of fan-shaped filter plates are respectively embedded and placed in the fan-shaped area surrounded by adjacent transverse connecting plates, the outer ring and the top circular plate, and the outer upper end of the top circular plate and the inner upper end of the outer ring are respectively provided with a first arc-shaped groove and a second arc-shaped groove for supporting the fan-shaped filter plate; the supporting transverse plate is fixedly connected to the inner wall of the flared tube, and the rotating structure is installed on the supporting transverse plate; the rotating structure is connected to the lower end of the straight shaft, and the upper end of the straight shaft is fixedly connected to the bottom of the top circular plate; the locking structure is installed on the upper end of the top circular plate and presses the fan-shaped filter plate in a natural state.

[0014] Furthermore, the locking structure includes a straight rod, a torsion spring, a connecting circular plate and a stopper; the lower end of the straight rod is fixedly connected to the top of the top circular plate, a connecting circular plate is rotatably mounted on the straight rod, the inner and outer ends of the torsion spring are respectively fixedly connected to the straight rod and the connecting circular plate, a plurality of groups of protrusions are fixedly connected at equal intervals in the circumferential direction of the connecting circular plate, a stopper is also fixedly connected to the top circular plate, and when one of the protrusions contacts the stopper, the outer end of the protrusion is pressed on the fan-shaped filter plate;

[0015] The fan-shaped filter plate, the transverse connecting plate, the top circular plate, and the top of the outer ring are flush; the fan-shaped filter plate and the bottom of the transverse connecting plate are flush.

[0016] Furthermore, the rotating structure adopts a fan blade, the fan blade is rotatably connected to the supporting horizontal plate, and the upper end of the fan blade is fixedly connected to the bottom of the straight shaft.

[0017] Furthermore, the pressurized air blowing assembly includes an air outlet pipe, an air inlet hood and a lower air hood; the air inlet hood is located below the fan, and the upper and lower ends of the air outlet pipe pass through the flaring pipe and the air inlet channel respectively, and the upper and lower ends of the air outlet pipe are fixedly connected to the lower air hood located inside the flaring pipe and the air inlet hood located inside the air inlet channel respectively, and the upper end opening of the lower air hood is fitted on the bottom of the fan-shaped filter and the horizontal connecting plate.

[0018] Furthermore, the conveying assembly includes an air intake pipe, a tapered tube, an upper air hood and a side hole; the upper end of the air intake pipe passes through the flared tube and is fixedly connected to the upper air hood inside the flared tube, the lower end of the air intake pipe is fixedly connected to the tapered tube, and the inner diameter of the air intake pipe is larger than the inner diameter of the tapered tube; the lower end opening of the upper air hood fits over the fan-shaped filter, the horizontal connecting plate, and the top of the outer ring; a side hole is provided on one side of the upper air hood to facilitate the impurities to be driven into the upper air hood when the fan-shaped filter rotates; the lower end of the tapered tube is placed in the water in the water tank.

[0019] Furthermore, the scraping assembly includes a scraper, and a portion of the upper end of the intake pipe extends inward, and the upper bottom of the intake pipe is connected to the upper end of the outer ring in a sliding contact; the scraper is fixedly mounted on the upper end side wall of the intake pipe, and the height of the scraper is less than one-third of the inner diameter of the intake pipe; the bottom of the scraper is in a fitting contact and movably connected with the fan-shaped filter, the horizontal connecting plate, and the top of the outer ring.

[0020] Furthermore, the rainproof assembly includes a cap, support rods, side panels and sockets; multiple groups of support rods are fixedly connected to the inner top of the cap, and multiple groups of side panels are fixedly installed on the circumference of the expanded tube. The support rods correspond one by one to the upper and lower sides of the side panels, and the lower ends of the support rods are respectively inserted into the sockets opened at the upper ends of the side panels.

[0021] A method for using a self-cleaning flared ventilation device for HVAC comprises the following steps:

[0022] 1. Through the action of the fan, the outside air is sucked into the flared pipe through the gap between the flared pipe and the rainproof component and then enters the air inlet channel; the incoming air synchronously drives the rotation of the fan blades;

[0023] Second, the fan blades drive the straight shaft to rotate, and the straight shaft drives the top circular plate to rotate, thereby realizing the overall rotation of the assembled filter structure to filter the air;

[0024] 3. The fan-shaped filter rotates and drives the impurities to enter the upper air hood through the side holes. After the airflow enters the air intake hood, it is pressurized through the air outlet pipe with a smaller inner diameter, and then blows from the lower air hood to the fan-shaped filter and the horizontal connecting plate to blow out the dust and impurities in the holes of the fan-shaped filter to clear the blockage. The impurities on the fan-shaped filter are scraped off by the scraper. The airflow of the pressurized blowing assembly drives the impurities cleared and scraped into the upper air hood, and then transmitted to the water tank through the air intake pipe and the conical pipe.

[0025] 4. Clean the discharged gas with water in the water tank;

[0026] 5. When it is necessary to remove the sector-shaped filter, rotate the protrusion counterclockwise to drive the connecting circular plate to rotate. When each protrusion rotates to overlap with each horizontal connecting plate, the sector-shaped filter that needs to be removed can be taken out for replacement. After replacement, release the protrusion, and under the elastic reset force of the torsion spring, drive the connecting circular plate to rotate clockwise. The connecting circular plate drives the protrusion to rotate clockwise until a protrusion contacts the block, and the block prevents the protrusion from continuing to rotate. At this time, the outer end of the protrusion is pressed on the sector-shaped filter, thereby realizing the crimping and locking of the sector-shaped filter again.

[0027] Beneficial Effects

[0028] The present invention utilizes the backwash principle to clear the impurities in the filter holes of the assembled filter assembly, and at the same time scrapes and cleans the upper part of the assembled filter assembly, and blows the removed impurities into the water tank for cleaning, so that the cleaning effect is more obvious, and the increase in ventilation pressure caused by impurities falling into the filter holes is avoided, thereby avoiding the risk of impurities being sucked into the air inlet; the present invention does not cause dust, and ensures the cleanliness of subsequent air intake; the present invention can adopt the non-drive principle to realize the rotation cleaning of the assembled filter assembly.

[0029] When the fan-shaped filter needs to be removed, the protrusion is rotated counterclockwise to drive the connecting circular plate to rotate. When each protrusion rotates to overlap with each horizontal connecting plate, the fan-shaped filter that needs to be removed can be taken out for replacement. After replacement, the protrusion is released, and the connecting circular plate is driven to rotate clockwise under the elastic reset force of the torsion spring. The connecting circular plate drives the protrusion to rotate clockwise until a protrusion contacts the stopper, and the protrusion is prevented from continuing to rotate by the stopper. At this time, the outer end of the protrusion is pressed on the fan-shaped filter, so that the fan-shaped filter is re-crimped and locked, so as to prevent the fan-shaped filter from falling off and ensure the stability of filtering.

[0030] When the fan-shaped filter of the present invention rotates clockwise, it enters the interior of the upper air hood through the side hole, and the fan-shaped filter is reversely inflated and cleared by the pressurized blowing component, and the impurities on the fan-shaped filter are scraped off by the scraping component. The airflow of the pressurized blowing component drives the cleared impurities and the scraped impurities into the upper air hood, and then is transmitted to the water tank through the air intake pipe and the conical pipe, thereby realizing effective cleaning of the assembled filter component; the discharged gas is cleaned by the water in the water tank to prevent dust from polluting the surrounding air. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A three-dimensional diagram of a self-cleaning expansion type ventilation device for heating, ventilation and air conditioning of the present invention Figure 1 ;

[0033] Figure 2 A front view of a self-cleaning flared ventilator for HVAC of the present invention;

[0034] Figure 3 It is a left side view of a self-cleaning flared ventilation device for HVAC of the present invention;

[0035] Figure 4 A three-dimensional diagram of a self-cleaning expansion type ventilation device for heating, ventilation and air conditioning of the present invention Figure 2 ;

[0036] Figure 5 A three-dimensional diagram of a self-cleaning expansion type ventilation device for heating, ventilation and air conditioning of the present invention Figure 3 ;

[0037] Figure 6 For along Figure 3 AA direction section Figure 1 ;

[0038] Figure 7 For along Figure 3 AA direction section Figure 2 ;

[0039] Figure 8 For along Figure 3 CC direction section Figure 1 ;

[0040] Fig. 9 For along Figure 3 CC direction section Figure 2 ;

[0041] Fig.10 for Figure 8 The enlarged view of point D in the middle;

[0042] Fig.11 For along Figure 2 BB direction cross-sectional view.

[0043] The numbers in the figure represent:

[0044] 1. Inlet channel; 2. Water tank; 3. Recoil assembly; 31. Inlet pipe; 32. Outlet pipe; 33. Inlet hood; 34. Conical pipe; 35. Lower hood; 36. Upper hood; 37. Scraper; 38. Side hole; 4. Expanding pipe; 5. Rainproof assembly; 51. Cover cap; 52. Support rod; 53. Side plate; 54. Socket; 6. Fan; 7. Assembled filter assembly; 71. Rotating structure; 72. Fan-shaped filter plate; 73. Straight shaft; 74. First arc groove; 75. Support horizontal plate; 76. Second arc groove; 77. Outer ring; 78. Bump; 79. Straight rod; 710. Torsion spring; 711. Connecting circular plate; 712. Stopper; 713. Horizontal connecting plate; 714. Top circular plate; 7101. Fan blade; 7102. Motor. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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.

[0046] The present invention will be further described below in conjunction with the embodiments.

[0047] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0048] Example 1

[0049] Please refer to the instruction manual Figure 1-10 A self-cleaning flared ventilation device for HVAC comprises an air inlet passage 1, an flared pipe 4 and a fan 6; the upper end of the air inlet passage 1 is fixedly connected to the bottom of the flared pipe 4; the upper end of the flared pipe 4 is detachably connected with a rainproof component 5 for preventing rain and dust; the inside of the air inlet passage 1 is fixedly installed with a fan 6 for sucking outside air into the flared pipe 4 through the gap between the flared pipe 4 and the rainproof component 5 and then into the air inlet passage 1 through a bracket;

[0050] The air inlet passage 1 is internally provided with an assembled filter assembly 7 for filtering the air and cooperating with the recoil assembly 3 to realize self-cleaning when rotating;

[0051] The assembled filter assembly 7 includes an assembled filter structure, a rotating structure 71 and a locking structure; the upper and lower ends of the assembled filter structure are connected to the locking structure and the rotating structure 71 respectively;

[0052] The rotating structure 71 drives the assembled filter structure to rotate, and the locking structure is used to lock the assembled filter structure, thereby ensuring the stability of the assembled filter structure;

[0053] The assembled filtering structure includes a sector-shaped filter sheet 72, a straight shaft 73, a first arc-shaped groove 74, a second arc-shaped groove 76, an outer ring 77, a transverse connecting plate 713 and a top circular plate 714; a plurality of groups of transverse connecting plates 713 are fixedly connected at equal intervals in the circumferential direction of the top circular plate 714, and the outer ends of the transverse connecting plates 713 are fixedly connected to the inner wall of the outer ring 77 located on the outside, and a plurality of sector-shaped filter sheets 72 are respectively embedded and placed in the sector-shaped area surrounded by adjacent transverse connecting plates 713, the outer ring 77 and the top circular plate 714. The outer upper end of the top circular plate 714 and the inner upper end of the outer ring 77 are respectively provided with a first arc groove 74 and a second arc groove 76 for supporting the sector-shaped filter 72; the supporting transverse plate 75 is fixedly connected to the inner wall of the expanded tube 4, and the rotating structure 71 is installed on the supporting transverse plate 75; the rotating structure 71 is connected to the lower end of the straight shaft 73, and the upper end of the straight shaft 73 is fixedly connected to the bottom of the top circular plate 714; the locking structure is installed on the upper end of the top circular plate 714 and presses the sector-shaped filter 72 in a natural state;

[0054] The rotating structure 71 drives the straight shaft 73 to rotate, and the straight shaft 73 drives the top circular plate 714 to rotate, thereby realizing the overall rotation of the assembled filter structure to filter the air;

[0055] The outer wall of the outer ring 77 and the inner wall of the expanded tube 4 may be connected in a sliding manner; or a small gap may be provided between the outer wall of the outer ring 77 and the inner wall of the expanded tube 4, for example, a gap no larger than the filter hole of the sector filter plate may be provided between the outer wall of the outer ring 77 and the inner wall of the expanded tube 4, which is beneficial to reducing the rotational friction of the outer ring 77;

[0056] The locking structure includes a straight rod 79, a torsion spring 710, a connecting circular plate 711 and a stopper 712; the lower end of the straight rod 79 is fixedly connected to the top of the top circular plate 714, the connecting circular plate 711 is rotatably mounted on the straight rod 79, the inner and outer ends of the torsion spring 710 are respectively fixedly connected to the straight rod 79 and the connecting circular plate 711, a plurality of groups of protrusions 78 are fixedly connected at equal intervals in the circumferential direction of the connecting circular plate 711, and the top circular plate 714 is also fixedly connected to a stopper 712, when one of the protrusions 78 contacts the stopper 712, the outer end of the protrusion 78 is pressed on the fan-shaped filter 72;

[0057] The tops of the sector-shaped filter plate 72, the transverse connecting plate 713, the top circular plate 714, and the outer ring 77 are flush with each other; the bottoms of the sector-shaped filter plate 72 and the transverse connecting plate 713 are flush with each other;

[0058] When the screw thread is tightened, the locking nut 710 is in the state of being firmly fixed to the locking nut 711, and the locking nut 711 is in the state of being firmly fixed to the locking nut 712. When the locking nut 71 is firmly fixed to the locking nut 712, the locking nut 71 is firmly fixed to the locking nut 712.

[0059] In this embodiment, the rotating structure 71 adopts a fan blade 7101, the fan blade 7101 is rotatably connected to the supporting horizontal plate 75, and the upper end of the fan blade 7101 is fixedly connected to the bottom of the straight shaft 73;

[0060] The incoming air synchronously drives the rotation of the fan blades 7101, and the rotation of the fan blades 7101 drives the straight shaft 73 to rotate; no power equipment is required to drive the rotation of the assembled filter structure;

[0061] The flared tube 4 is provided with a backflushing assembly 3 for cleaning the assembled filter assembly 7;

[0062] The recoil assembly 3 includes a booster blowing assembly, a conveying assembly and a scraping assembly; the two ends of the booster blowing assembly are respectively located inside the flaring tube 4 and the air inlet channel 1, the upper end of the conveying assembly and the upper end of the booster blowing assembly are respectively located on the upper and lower sides of the fan-shaped filter 72, the upper end of the conveying assembly and the scraping assembly are both located inside the flaring tube 4, and the scraping assembly is connected to the upper end of the conveying assembly;

[0063] The booster blowing assembly includes an air outlet pipe 32, an air inlet hood 33 and a lower air hood 35; the air inlet hood 33 is located below the fan 6, and the upper and lower ends of the air outlet pipe 32 pass through the flaring pipe 4 and the air inlet channel 1 respectively, and the upper and lower ends of the air outlet pipe 32 are fixedly connected to the lower air hood 35 located inside the flaring pipe 4 and the air inlet hood 33 located inside the air inlet channel 1 respectively, and the upper end opening of the lower air hood 35 fits on the bottom of the fan-shaped filter sheet 72 and the horizontal connecting plate 713;

[0064] After the airflow enters the air inlet hood 33, it is pressurized through the air outlet pipe 32 with a smaller inner diameter, and then blows from the lower air hood 35 to the fan-shaped filter 72 and the horizontal connecting plate 713, blowing out the dust and impurities in the holes of the fan-shaped filter 72 to clear the blockage, and then outputs to the water tank 2 through the conveying component;

[0065] The conveying assembly includes an air intake pipe 31, a tapered pipe 34, an upper air cover 36 and a side hole 38; the upper end of the air intake pipe 31 passes through the flared pipe 4 and is fixedly connected to the upper air cover 36 inside the flared pipe 4, the lower end of the air intake pipe 31 is fixedly connected to the tapered pipe 34, and the inner diameter of the air intake pipe 31 is larger than the inner diameter of the tapered pipe 34; the lower end opening of the upper air cover 36 fits on the top of the fan-shaped filter plate 72, the horizontal connecting plate 713, and the outer ring 77; a side hole 38 is provided on one side of the upper air cover 36 to facilitate the impurities to enter the upper air cover 36 when the fan-shaped filter plate 72 rotates, and the height of the side hole 38 is slightly larger than the filter hole of the fan-shaped filter plate 72;

[0066] The bottom of the conical tube 34 is located 1-2 cm below the liquid level of the water tank 2;

[0067] When the fan-shaped filter 72 rotates clockwise, the impurities on the fan-shaped filter 72 also rotate with the fan-shaped filter 72. Due to the effect of the rainproof component 5, the impurities are very small, generally dust and other impurities. The height of the side hole 38 is slightly larger than the filter hole of the fan-shaped filter 72, and the impurities can smoothly pass through the side hole 38 into the upper air cover 36. The fan-shaped filter 72 is reversely inflated and cleared by the booster blowing component, and the impurities on the fan-shaped filter 72 are scraped off by the scraping component. The airflow of the booster blowing component drives the cleared impurities and the scraped impurities into the upper air cover 36, and then transmitted to the water tank 2 through the air intake pipe 31 and the conical pipe 34, so as to achieve effective cleaning of the assembled filter component 7;

[0068] The scraping assembly includes a scraper 37. A portion of the upper end of the intake pipe 31 extends inward, and the upper end bottom of the intake pipe 31 is slidably contacted and connected with the upper end of the outer ring 77. The scraper 37 is fixedly mounted on the upper end side wall of the intake pipe 31, and the height of the scraper 37 is less than one third of the inner diameter of the intake pipe 31. The bottom of the scraper 37 is in contact and movably connected with the fan-shaped filter sheet 72, the horizontal connecting plate 713, and the top of the outer ring 77.

[0069] When the sector-shaped filter 72 rotates, the scraper 37 scrapes away impurities on the sector-shaped filter 72 , which is beneficial for further cleaning the sector-shaped filter 72 .

[0070] It also includes a water tank 2; the lower end of the conical tube 34 is placed in the water in the water tank 2;

[0071] The discharged gas is cleaned by the water in the water tank 2 to prevent dust from polluting the surrounding air;

[0072] The rainproof assembly 5 includes a cap 51, a support rod 52, a side plate 53 and a socket 54; a plurality of support rods 52 are fixedly connected to the inner top of the cap 51, and a plurality of side plates 53 are fixedly installed on the circumference of the flared tube 4, the support rods 52 correspond to the side plates 53 one by one, and the lower ends of the support rods 52 are respectively inserted into the sockets 54 opened at the upper ends of the side plates 53;

[0073] The diameter of the cap 51 is larger than the opening diameter of the expanded tube 4. The cap 51 can block rainwater and some particulate impurities, thereby preventing pollutants from falling into the expanded tube 4. There is an air intake gap between the cap 51 and the expanded tube 4.

[0074] The lower end of the support rod 52 can be inserted into the side plate 53 to achieve plug-in fixation, so that the cover cap 51 can be easily removed or replaced.

[0075] The present invention utilizes the backwash principle to clear the impurities in the filter holes of the assembled filter assembly 7, and at the same time scrapes and cleans the upper part of the assembled filter assembly 7, and blows the removed impurities into the water tank 2 for cleaning. The cleaning effect is more obvious, and the increase in ventilation pressure caused by impurities falling into the filter holes is avoided, thereby avoiding the risk of impurities being sucked into the air inlet; the present invention does not cause dust, and ensures the cleanliness of the subsequent air intake; the present invention can adopt the non-drive principle to realize the rotation cleaning of the assembled filter assembly 7.

[0076] Example 2

[0077] Please refer to the instruction manual Fig.11 , which is different from the first embodiment, in this embodiment, the rotating structure 71 adopts a motor 7102, the housing of the motor 7102 is fixedly connected to the supporting horizontal plate 75, and the driving end of the motor 7102 is fixedly connected to the bottom of the straight shaft 73;

[0078] The motor 7102 drives the straight shaft 73 to rotate; a power structure can also be added to play a stable driving role.

[0079] Example 3

[0080] Based on Example 1, please refer to the attached manual. Figure 1-10 , a method for using a self-cleaning flared ventilation device for HVAC, comprising the following steps:

[0081] 1. Through the action of the fan 6, the outside air is sucked into the expanded tube 4 through the gap between the expanded tube 4 and the rainproof component 5 and then enters the air inlet channel 1; the incoming air synchronously drives the rotation of the fan blades 7101;

[0082] Second, the fan blades 7101 drive the straight shaft 73 to rotate, and the straight shaft 73 drives the top circular plate 714 to rotate, thereby realizing the overall rotation of the assembled filter structure to filter the air;

[0083] 3. The fan-shaped filter 72 rotates and drives the impurities to enter the upper air cover 36 through the side hole 38. After the airflow enters the air inlet cover 33, it is pressurized through the air outlet pipe 32 with a smaller inner diameter, and then blows from the lower air cover 35 to the fan-shaped filter 72 and the horizontal connecting plate 713 to blow out the dust and impurities in the holes of the fan-shaped filter 72 to achieve clearing. The impurities on the fan-shaped filter 72 are scraped off by the scraper 37. The airflow of the pressurized blowing assembly drives the impurities cleared and scraped into the upper air cover 36, and then transmitted to the water tank 2 through the air inlet pipe 31 and the tapered pipe 34;

[0084] Fourth, the discharged gas is cleaned by the water in the water tank 2;

[0085] 5. When it is necessary to remove the sector-shaped filter 72, the protrusion 78 is rotated counterclockwise to drive the connecting circular plate 711 to rotate. When each protrusion 78 is rotated to overlap with each horizontal connecting plate 713, the sector-shaped filter 72 that needs to be removed can be taken out for replacement. After replacement, the protrusion 78 is released, and under the elastic reset force of the torsion spring 710, the connecting circular plate 711 is driven to rotate clockwise. The connecting circular plate 711 drives the protrusion 78 to rotate clockwise until a protrusion 78 contacts the stopper 712, and the protrusion 78 is prevented from continuing to rotate by the stopper 712. At this time, the outer end of the protrusion 78 is pressed on the sector-shaped filter 72, thereby realizing the crimping and locking of the sector-shaped filter 72 again.

[0086] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-cleaning flared ventilation device for HVAC, comprising an air inlet channel (1), a flared pipe (4) and a fan (6), characterized in that: The upper end of the air inlet passage (1) is fixedly connected to the bottom of the expanded pipe (4); the upper end of the expanded pipe (4) is detachably connected to a rainproof component (5) for preventing rain and dust; a fan (6) is fixedly installed inside the air inlet passage (1) through a bracket for sucking external air through the gap between the expanded pipe (4) and the rainproof component (5) into the expanded pipe (4) and then into the air inlet passage (1); The air inlet passage (1) is internally provided with an assembled filter assembly (7) for filtering air and cooperating with the recoil assembly (3) to achieve self-cleaning when rotating; The assembled filter assembly (7) comprises an assembled filter structure, a rotating structure (71) and a locking structure; the upper and lower ends of the assembled filter structure are respectively connected to the locking structure and the rotating structure (71); The flared tube (4) is provided with a backflushing assembly (3) for cleaning the assembled filter assembly (7); The recoil assembly (3) comprises a booster blowing assembly, a conveying assembly and a scraping assembly; the two ends of the booster blowing assembly are respectively located inside the expanding tube (4) and the air inlet channel (1); the upper end of the conveying assembly and the upper end of the booster blowing assembly are respectively located on the upper and lower sides of the fan-shaped filter sheet (72); the upper end of the conveying assembly and the scraping assembly are both located inside the expanding tube (4); and the scraping assembly is connected to the upper end of the conveying assembly; It also includes a water tank (2); one end of the recoil assembly (3) is placed in the water in the water tank (2).

2. The self-cleaning flared ventilation device for HVAC according to claim 1, characterized in that: The assembled filtering structure comprises a sector-shaped filter sheet (72), a straight shaft (73), a first arc-shaped groove (74), a second arc-shaped groove (76), an outer ring (77), a transverse connecting plate (713) and a top circular plate (714); a plurality of groups of transverse connecting plates (713) are fixedly connected at equal intervals in the circumferential direction of the top circular plate (714); the outer ends of the transverse connecting plates (713) are fixedly connected to the inner wall of the outer ring (77) located on the outside; and a plurality of sector-shaped filter sheets (72) are respectively embedded in the sector-shaped areas surrounded by adjacent transverse connecting plates (713), the outer ring (77) and the top circular plate (714). The outer upper end of the top circular plate (714) and the inner upper end of the outer ring (77) are respectively provided with a first arc groove (74) and a second arc groove (76) for supporting the sector-shaped filter plate (72); the supporting transverse plate (75) is fixedly connected to the inner wall of the expanded tube (4), and the rotating structure (71) is installed on the supporting transverse plate (75); the rotating structure (71) is connected to the lower end of the straight shaft (73), and the upper end of the straight shaft (73) is fixedly connected to the bottom of the top circular plate (714); the locking structure is installed at the upper end of the top circular plate (714) and presses the sector-shaped filter plate (72) in a natural state.

3. The self-cleaning flared ventilation device for HVAC according to claim 2, characterized in that: The locking structure comprises a straight rod (79), a torsion spring (710), a connecting circular plate (711) and a stopper (712); the lower end of the straight rod (79) is fixedly connected to the top of the top circular plate (714); a connecting circular plate (711) is rotatably mounted on the straight rod (79); the inner and outer ends of the torsion spring (710) are respectively fixedly connected to the straight rod (79) and the connecting circular plate (711); a plurality of groups of protrusions (78) are fixedly connected to the connecting circular plate (711) at equal intervals in the circumferential direction; a stopper (712) is also fixedly connected to the top circular plate (714); when one of the protrusions (78) contacts the stopper (712), the outer end of the protrusion (78) is pressed onto the fan-shaped filter plate (72); The tops of the sector-shaped filter plate (72), the transverse connecting plate (713), the top circular plate (714), and the outer ring (77) are flush; and the bottoms of the sector-shaped filter plate (72) and the transverse connecting plate (713) are flush.

4. The self-cleaning flared ventilation device for HVAC according to claim 3, characterized in that: The rotating structure (71) adopts a fan blade (7101), the fan blade (7101) is rotatably connected to the supporting horizontal plate (75), and the upper end of the fan blade (7101) is fixedly connected to the bottom of the straight shaft (73).

5. The self-cleaning flared ventilation device for HVAC according to claim 4, characterized in that: The boost air blowing assembly comprises an air outlet pipe (32), an air inlet hood (33) and a lower air hood (35); the air inlet hood (33) is located below the fan (6); the upper and lower ends of the air outlet pipe (32) respectively pass through the expansion pipe (4) and the air inlet channel (1); the upper and lower ends of the air outlet pipe (32) are respectively fixedly connected to the lower air hood (35) located inside the expansion pipe (4) and the air inlet hood (33) located inside the air inlet channel (1); the upper end opening of the lower air hood (35) is fitted on the bottom of the fan-shaped filter plate (72) and the horizontal connecting plate (713).

6. The self-cleaning flared ventilation device for HVAC according to claim 5, characterized in that: The conveying assembly comprises an air intake pipe (31), a tapered pipe (34), an upper air cover (36) and a side hole (38); the upper end of the air intake pipe (31) passes through the flaring pipe (4) and is fixedly connected to the upper air cover (36) inside the flaring pipe (4); the lower end of the air intake pipe (31) is fixedly connected to the tapered pipe (34); the inner diameter of the air intake pipe (31) is larger than the inner diameter of the tapered pipe (34); the lower end opening of the upper air cover (36) fits on the top of the fan-shaped filter plate (72), the transverse connecting plate (713) and the outer ring (77); a side hole (38) is provided on one side of the upper air cover (36) for facilitating the impurities to enter the upper air cover (36) when the fan-shaped filter plate (72) rotates; the lower end of the tapered pipe (34) is placed in the water in the water tank (2).

7. The self-cleaning flared ventilation device for HVAC according to claim 6, characterized in that: The scraping assembly comprises a scraper (37), a portion of the upper end of the intake pipe (31) extends inward, and the bottom of the upper end of the intake pipe (31) is connected in sliding contact with the upper end of the outer ring (77); the scraper (37) is fixedly mounted on the upper end side wall of the intake pipe (31), and the height of the scraper (37) is less than one third of the inner diameter of the intake pipe (31); the bottom of the scraper (37) is movably connected in contact with the fan-shaped filter plate (72), the horizontal connecting plate (713), and the top of the outer ring (77).

8. The self-cleaning flared ventilation device for HVAC according to claim 7, characterized in that: The rainproof assembly (5) comprises a cover cap (51), a support rod (52), a side plate (53) and a socket (54); a plurality of groups of support rods (52) are fixedly connected to the inner top of the cover cap (51), a plurality of groups of side plates (53) are fixedly installed in the circumferential direction of the expanded tube (4), the support rods (52) and the side plates (53) correspond one to another in the upper and lower parts, and the lower ends of the support rods (52) are respectively inserted into the sockets (54) provided at the upper ends of the side plates (53).

9. A method for using the self-cleaning flared ventilation device for HVAC according to claim 8, characterized in that: The following steps are involved:

1. Through the action of the fan (6), the outside air is sucked into the flared tube (4) through the gap between the flared tube (4) and the rainproof component (5) and then enters the air inlet passage (1); the incoming air synchronously drives the rotation of the fan blades (7101); Second, the fan blades (7101) drive the straight shaft (73) to rotate, and the straight shaft (73) drives the top circular plate (714) to rotate, thereby realizing the overall rotation of the assembled filter structure to filter the air; 3. The fan-shaped filter (72) rotates and drives the impurities to enter the upper air cover (36) through the side hole (38). After the airflow enters the air inlet cover (33), it is pressurized through the air outlet pipe (32) with a smaller inner diameter. Then, it is blown from the lower air cover (35) to the fan-shaped filter (72) and the horizontal connecting plate (713) to blow out the impurities in the holes of the fan-shaped filter (72) to achieve clearing. The impurities on the fan-shaped filter (72) are scraped off by the scraper (37). The airflow of the pressurized blowing assembly drives the impurities cleared out of the blockage and the scraped impurities into the upper air cover (36), and then transmitted to the water tank (2) through the air inlet pipe (31) and the conical pipe (34); Fourth, the discharged gas is cleaned by the water in the water tank (2); Fifth, when it is necessary to remove the sector-shaped filter (72), the protrusion (78) is rotated counterclockwise to drive the connecting circular plate (711) to rotate. When each protrusion (78) is rotated to overlap with each horizontal connecting plate (713), the sector-shaped filter (72) to be removed can be taken out for replacement. After replacement, the protrusion (78) is released, and the connecting circular plate (711) is driven to rotate clockwise under the elastic restoring force of the torsion spring (710). The connecting circular plate (711) drives the protrusion (78) to rotate clockwise until one protrusion (78) contacts the stopper (712), and the protrusion (78) is prevented from continuing to rotate by the stopper (712). At this time, the outer end of the protrusion (78) is pressed on the sector-shaped filter (72), so that the sector-shaped filter (72) is crimped and locked again.

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