A wind power heat pump system with coupled heating

Abstract

The invention relates to the technical field of heat pumps, and discloses a wind-electric heat pump system coupled with heating, comprising: a vertical axis generator, wherein the vertical axis generator converts wind energy into electric energy, and an output end thereof is connected to an energy storage cabinet for electric energy storage and management, the output end of the energy storage cabinet is connected to a heat pump host, and the output end of the heat pump host is connected to indoor heating equipment, an air inlet mesh plate is arranged in the air inlet of the heat pump host, an air outlet is arranged at the upper center position of the heat pump host, an air outlet protective cover is arranged outside the air outlet, a cover frame is arranged on the air outlet protective cover, and a power component is fixedly arranged at the center position of the cover frame; the air discharged from the air outlet of the invention is reduced, the rotation speed of the turbine blade is reduced, and under the shaking and the suction force of a large amount of air intake, the dust or poplar fluff blocked on the air inlet mesh plate is shaken off, which is conducive to automatically maintaining the air inlet mesh plate without stopping the machine, and is conducive to reducing high-load operation and poor heat exchange effect caused by small air intake.

Description

Technical Field

[0001] The present invention relates to the field of heat pumps, and more particularly to a wind-electric heat pump system for coupled heating. Background Art

[0002] The wind power heat pump system with coupled heating is an innovative energy solution that combines wind energy and heat pump technology to achieve efficient and sustainable heating needs. The system organically combines wind power generation with heat pump technology, using wind power generation to drive heat pumps to provide heating services for buildings or industrial facilities.

[0003] The wind power heat pump system coupled with heating uses a vertical axis wind turbine to convert wind energy into electrical energy. The energy storage cabinet stores excess electrical energy when there is excess wind power generation, and releases electrical energy to maintain the normal operation of the heat pump when there is insufficient wind power. The heat pump is driven by electrical energy, and air enters from the air inlet and is discharged from the air outlet, extracting heat from the low-temperature heat source and using it for heating after heating.

[0004] However, for heat pump units installed outdoors, especially in seasons with a lot of fluff and dust, the mesh of the air inlet mesh may be blocked in a short time. Dust and fluff blocking the air inlet may cause the system to overheat or frost in a low temperature environment, thus affecting the normal operation of the equipment. When the equipment is running, the mesh is suddenly blocked, and the staff does not clean it in time. The equipment will continue to run at a high load. Long-term high-load operation and poor heat exchange will accelerate the aging and damage of the equipment and shorten its service life. For this reason, we propose a wind-power heat pump system with coupled heating. Summary of the invention

[0005] The present invention provides a wind-electric heat pump system for coupled heating, which solves the technical problem in the related art that when the equipment is running, the mesh is suddenly blocked, and the staff does not clean it in time, so the equipment will continue to run at a high load. Long-term high-load operation and poor heat exchange effect will accelerate the aging and damage of the equipment and shorten its service life.

[0006] The present invention provides a wind-electric heat pump system for coupled heating, comprising: a vertical axis generator, the vertical axis generator converts wind energy into electric energy, the output end of which is connected to an energy storage cabinet for electric energy storage and management, the output end of the energy storage cabinet is connected to a heat pump host, and the heat in the ambient air is used to provide heating or cooling services, the output end of the heat pump host is connected to an indoor heating device, and indoor heating is performed through a pipeline heat sink, an air inlet mesh plate is arranged in the air inlet of the heat pump host, an air outlet is arranged at the center position above the heat pump host, an air outlet protective cover is arranged outside the air outlet, a cover frame is arranged on the air outlet protective cover, and a power component is fixedly arranged at the center position of the cover frame, which is used to detect the degree of blockage of the air inlet mesh plate by monitoring the wind speed of the air outlet, and automatically shake off the dust on the air inlet mesh plate and absorb the sundries in the air passing through the mesh holes of the air inlet mesh plate;

[0007] The power assembly includes a wind tube, the internal air inlet end of which is rotatably provided with turbine blades, the outer wall of which is fixed with a plurality of extrusion columns, and the inner wall of the wind tube on one side of the turbine blade is fixed with a power box for pulling the air inlet mesh plate to shake.

[0008] Furthermore, a negative pressure mesh is provided at the air outlet end of the air duct, and the internal space of the air duct below the negative pressure mesh is opposite to the internal space of the air duct where the turbine blades are located, and when the air is exhausted at a high speed at the air outlet, the internal space of the air duct below the negative pressure mesh forms a negative pressure to absorb dust.

[0009] Furthermore, the power box includes an inner hollow box at its inner center position, a soft plate is slidably arranged inside the inner hollow box, a push column is fixedly arranged on one side of the soft plate close to the turbine blade, and an end of the push column close to the turbine blade passes through the inner hollow box wall panel and the power box wall panel in sequence.

[0010] Furthermore, an arc-shaped spring-pressure sheet is fixedly provided at one end of the push column close to the turbine blade, both ends of the spring-pressure sheet are fixedly connected to the power box, and the side of the power box close to the turbine blade is an arc-shaped structure, and the center end point of the spring-pressure sheet is closer to the outer wall of the turbine blade than the length of the extrusion column.

[0011] Furthermore, a pulley is provided on the upper wall of the inner hollow box and is rotatably connected to the power box. A pull belt is wound around the pulley, and the end of the pull belt away from the pulley passes through the wall panels of the power box and the wind tube in sequence and is distributed along the cover frame.

[0012] Furthermore, a swing arm plate is fixedly provided at the center position of the lower wall of the pulley, the swing arm plate penetrates the upper wall of the inner empty box, and the lowest end of the swing arm plate is lower than the highest end of the soft plate.

[0013] Furthermore, a push plate wheel is provided at the end of the pull belt away from the wind tube, and the push plate wheel is located between the top plates of the two air inlet mesh plates and is rotatably connected to the heat pump main unit. Semi-annular auxiliary push rings are fixedly provided on both sides of the push plate wheel, and the arc directions of the auxiliary push rings on both sides of the push plate wheel are opposite. The two auxiliary push rings push the two air inlet mesh plates to shake alternately in turn.

[0014] Furthermore, the air inlet end of the internal space of the air duct below the negative pressure mesh is connected to a dredging component for absorbing dust shaken off by the two air inlet mesh plates. The dredging component includes four negative pressure tubes connected to the air inlet end of the internal space of the air duct below the negative pressure mesh, and the four negative pressure tubes are distributed along the hood frame.

[0015] Furthermore, an end of the negative pressure pipe away from the wind duct is fixedly connected to a ash box, and the wind duct is connected to the ash box through the negative pressure pipe. At the same time, the ash box is fixed on the heat pump main unit below the air inlet mesh plate, and a plurality of hoses are fixedly arranged on the upper wall of the ash box.

[0016] Furthermore, a wavy dust collection arm which is staggered with the mesh holes of the air inlet mesh plate is provided at one end of the hose away from the ash box, and a plurality of dust collection arms are provided. At the same time, the hose is interconnected with the two lowest rows of dust collection arms. Support pipes are fixedly connected to the two ends of the dust collection arm. A plurality of dust collection holes are provided on the dust collection arm, and the dust collection arm is interconnected with the ash box through the support pipe.

[0017] The beneficial effects of the present invention are:

[0018] When the mesh of the air inlet mesh plate of the present invention is blocked, the amount of air entering the heat pump main unit is reduced, thereby reducing the amount of air discharged from the air outlet, reducing the speed of the turbine blades, and reducing the squeezing frequency of the power box. Under the shaking and suction force of a large amount of air intake, the dust or poplar fluff blocked on the air inlet mesh plate is shaken off, which is conducive to automatically maintaining the air inlet mesh plate without stopping the machine, and is conducive to reducing high-load operation and poor heat exchange effect caused by insufficient air intake;

[0019] The circulation of high-speed wind drives the air in the internal space of the wind tube below the negative pressure mesh to flow upward, so that negative pressure air is formed in the internal space of the wind tube below the negative pressure mesh. When the air passes through the mesh of the air inlet mesh plate, the dust collection arm can exert a certain suction force on the large particles of impurities in the air, which is helpful to reduce the adsorption of large particles of dust in the air onto the copper tube of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the air inlet screen plate of the present invention;

[0022] Figure 3 The present invention Figure 2The enlarged schematic diagram at A in the middle;

[0023] Figure 4 It is a schematic diagram of the structure of the dust collection arm of the present invention;

[0024] Figure 5 The present invention Figure 4 The enlarged schematic diagram of point B in the middle;

[0025] Figure 6 It is a schematic diagram of the structure of the tuyere protection cover of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the air duct of the present invention;

[0027] Figure 8 It is a schematic diagram of the internal structure of the air duct of the present invention;

[0028] Fig. 9 The present invention Figure 8 The enlarged schematic diagram at C in the middle;

[0029] Fig.10 It is a schematic diagram of the power box structure of the present invention;

[0030] Fig.11 It is a schematic diagram of the internal structure of the inner empty box of the present invention;

[0031] Fig.12 It is a schematic diagram of the connection structure between the pulley wheel and the push plate wheel of the present invention;

[0032] Fig.13 It is a schematic diagram of the flow of the wind power heat pump system of the present invention.

[0033] In the figure: 11. heat pump main unit; 12. air inlet mesh plate; 13. air outlet; 14. air outlet protective cover; 15. cover frame; 2. power assembly; 21. air cylinder; 22. negative pressure mesh; 23. air outlet; 24. turbine fan blade; 25. extrusion column; 26. power box; 261. spring pressure plate; 262. inner empty box; 263. soft board; 264. push column; 27. pull belt; 271. pull belt wheel; 272. swing arm plate; 28. push plate wheel; 281. auxiliary push ring; 3. dredging assembly; 31. dust box; 32. support pipe; 321. dust suction arm; 322. dust suction hole; 33. negative pressure pipe; 34. hose; 4. vertical axis generator; 5. energy storage cabinet; 6. indoor heating equipment. DETAILED DESCRIPTION

[0034] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0035] like Figure 1 - Fig.13 As shown, a wind power heat pump system coupled with heating comprises: a vertical axis generator 4, the vertical axis generator 4 converts wind energy into electric energy, and the output end is connected to an energy storage cabinet 5 for electric energy storage and management, the output end of the energy storage cabinet 5 is connected to a heat pump host 11, and the heat in the ambient air is used to provide heating or cooling services, the output end of the heat pump host 11 is connected to an indoor heating device 6, and indoor heating is performed through a pipe heat sink, an air inlet mesh plate 12 is arranged in the air inlet of the heat pump host 11, an air outlet 13 is arranged at the upper center of the heat pump host 11, and the outer side of the air outlet 13 is An air outlet protection cover 14 is provided, and a cover frame 15 is provided on the air outlet protection cover 14. The air inlet mesh plate 12 is rotatably connected to the heat pump host 11. The air enters the heat pump host 11 through the air inlet mesh plate 12 and is discharged from the air outlet 13. The air entering the heat pump host 11 is blocked by the air inlet mesh plate 12 to prevent poplar fluff and other debris. A power component 2 is fixedly provided at the center of the cover frame 15, which is used to detect the degree of blockage of the air inlet mesh plate 12 by monitoring the wind speed of the air outlet 13, and automatically shake off the dust on the air inlet mesh plate 12 and absorb the debris in the air passing through the mesh of the air inlet mesh plate 12;

[0036] The power assembly 2 includes a wind tube 21, and a turbine blade 24 is rotatably provided at the internal air inlet end of the wind tube 21. A plurality of squeezing columns 25 are fixedly provided on the outer wall of the turbine blade 24. A power box 26 for pulling the air inlet mesh plate 12 to vibrate is fixedly provided on the inner wall of the wind tube 21 on one side of the turbine blade 24. When the two fans blow out air quickly in the air outlet 13, the turbine blade 24 is driven to rotate under the blowing of high-speed wind. The rotation of the turbine blade 24 causes the plurality of squeezing columns 25 to squeeze the power box 26 in turn. When the mesh of the air inlet mesh 12 is blocked, the amount of air entering the heat pump main unit 11 is reduced, thereby reducing the amount of air discharged from the air outlet 13, reducing the rotation speed of the turbine blades 24, and reducing the frequency of squeezing the power box 26. At this time, the push plate wheel 28 is pulled to shake, and the dust or poplar fluff blocked on the air inlet mesh 12 is shaken off by the shaking and the suction force of a large amount of incoming air, which is beneficial to automatically maintain the air inlet mesh 12 without stopping the machine, and is beneficial to reducing high-load operation and poor heat exchange effect caused by insufficient air intake.

[0037] A negative pressure mesh 22 is provided at the air outlet end of the wind duct 21, and the internal space of the wind duct 21 below the negative pressure mesh 22 is opposite to the internal space of the wind duct 21 where the turbine blades 24 are located, and the internal space of the wind duct 21 below the negative pressure mesh 22 forms a negative pressure to absorb dust when the air is exhausted at a high speed at the air outlet 13. When the two fans in the air outlet 13 blow out air upwards quickly, the air in the internal space of the wind duct 21 below the negative pressure mesh 22 is driven to flow upward under the circulation of high-speed wind, so that negative pressure air is formed in the internal space of the wind duct 21 below the negative pressure mesh 22. Therefore, when the air passes through the mesh holes of the air inlet mesh plate 12, a certain suction force is exerted on large particles of impurities in the air through the dust collection arm 321, which is beneficial to reduce the adsorption of large particles of dust in the air onto the copper tube of the heat exchanger.

[0038] The power box 26 includes an inner hollow box 262 at the center position thereof, a soft plate 263 is slidably provided inside the inner hollow box 262, a push column 264 is fixedly provided on one side of the soft plate 263 close to the turbine blade 24, one end of the push column 264 close to the turbine blade 24 passes through the wall panel of the inner hollow box 262 and the wall panel of the power box 26 in sequence, and the air blowing the turbine blade 24 is discharged from the air outlet 23 opened on the wind tube 21, and under the rotation of the turbine blade 24, a plurality of squeezing columns 25 squeeze the spring-pressing sheet 261 in sequence, and when the amount of air entering the heat pump host 11 is small, the frequency of the squeezing columns 25 squeezing the spring-pressing sheet 261 in sequence is reduced, and the reciprocating frequency of the push column 264 is also reduced.

[0039] An arc-shaped spring-loaded sheet 261 is fixedly provided at one end of the push column 264 close to the turbine blade 24, and both ends of the spring-loaded sheet 261 are fixedly connected to the power box 26, and the side of the power box 26 close to the turbine blade 24 is an arc-shaped structure. The center end point of the spring-loaded sheet 261 is less than the length of the extrusion column 25 at the distance from the outer wall of the turbine blade 24. Each time the spring-loaded sheet 261 is pressed, the push column 264 and the soft plate 263 are pushed to slide. When the speed of the turbine blade 24 is within the specified range, the soft plate 263 is pushed out again before it returns to the swing arm plate 272. Only when the speed of the turbine blade 24 is lower than the specified range, the soft plate 263 has already returned to the side of the swing arm plate 272 before being pushed for the second time. Then, when it is pushed out for the second time, the swing arm plate 272 can be pushed, and the pulley 271 is driven to rotate by the swing arm plate 272, so that the two air inlet mesh plates 12 are alternately shaken, thereby automatically maintaining the air inlet mesh plates 12.

[0040] The upper wall of the inner empty box 262 is provided with a pulley 271 rotatably connected to the power box 26, and a pull belt 27 is wound on the pulley 271, and the end of the pull belt 27 away from the pulley 271 passes through the wall panel of the power box 26 and the wall panel of the wind tube 21 in sequence and is distributed along the cover frame 15. When the pull belt 27 is pulled by the rotation of the pull wheel 271, the push plate wheel 28 is driven to rotate. The distribution of the pull belt 27 along the cover frame 15 can reduce the impact on the exhaust air.

[0041] A swing arm plate 272 is fixedly provided at the center position of the lower wall of the pull wheel 271. The swing arm plate 272 penetrates the upper wall of the inner empty box 262, and the lowest end of the swing arm plate 272 is lower than the highest end of the soft plate 263. When the swing arm plate 272 is pushed by the soft plate 263, the pull wheel 271 is driven to rotate. The pull wheel 271 is driven to rotate by the swing arm plate 272, so that the two air inlet mesh plates 12 are alternately shaken, which plays a role of automatically maintaining the air inlet mesh plates 12, and a coil spring is provided inside the pull wheel 271 to control the pull wheel 271.

[0042] A push plate wheel 28 is provided at one end of the pull belt 27 away from the wind tube 21, and the push plate wheel 28 is located between the top plates of the two air inlet mesh plates 12 and is rotatably connected to the heat pump host 11. Semi-annular auxiliary push rings 281 are fixedly provided on both sides of the push plate wheel 28, and the arc directions of the auxiliary push rings 281 on both sides of the push plate wheel 28 are opposite. The two auxiliary push rings 281 push the two air inlet mesh plates 12 to shake alternately in turn. The two auxiliary push rings 281 can alternately drive the two air inlet mesh plates 12 to shake back and forth, thereby reducing the impact of shaking on air entry.

[0043] The air inlet end of the inner space of the air duct 21 below the negative pressure mesh 22 is connected to a dredging component 3 for absorbing dust shaken off by the two air inlet mesh plates 12. The dredging component 3 includes four negative pressure tubes 33 connected to the air inlet end of the inner space of the air duct 21 below the negative pressure mesh 22, and the four negative pressure tubes 33 are distributed along the hood frame 15.

[0044] One end of the negative pressure pipe 33 away from the wind duct 21 is fixedly connected to the ash box 31, and the wind duct 21 is interconnected with the ash box 31 through the negative pressure pipe 33. At the same time, the ash box 31 is fixed on the heat pump main unit 11 below the air inlet mesh plate 12. A plurality of hoses 34 are fixedly provided on the upper wall of the ash box 31. When a negative pressure state is always maintained in the wind duct 21, the four negative pressure pipes 33 exert a certain suction on the ash box 31, so that it is also in a negative pressure state. After that, it is interconnected with the two rows of dust collection arms 321 at the bottom through the hoses 34, which can increase the suction force of the two rows of dust collection arms 321 on the incoming air. The shaking amplitude of the bottom air inlet mesh plate 12 is smaller than that of the upper part, so the suction force on the lower part is increased.

[0045] The end of the hose 34 away from the ash box 31 is provided with a wavy dust suction arm 321 which is staggered with the mesh holes of the air inlet mesh plate 12, and there are a plurality of dust suction arms 321. At the same time, the hose 34 is interconnected with the two lowest rows of dust suction arms 321. The two ends of the dust suction arms 321 are fixedly connected with support tubes 32. A plurality of dust suction holes 322 are opened on the dust suction arms 321. The dust suction arms 321 are interconnected with the ash box 31 through the support tubes 32. The dust shaken off by the air inlet mesh plate 12 and a part of the large dust particles in the air will be sucked into the dust suction holes 322. The large particles of impurities in the air are sucked by the dust suction arms 321 to a certain extent, which is beneficial to reduce the adsorption of large dust particles in the air onto the copper tubes of the heat exchanger.

[0046] The above describes an embodiment of the present embodiment, but the present embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms, all of which are within the protection of the present embodiment.

Claims

1. A wind power heat pump system for coupled heating, comprising: A vertical axis generator (4), wherein the output end of the vertical axis generator (4) is connected to an energy storage cabinet (5) for storing and managing electric energy by converting wind energy into electric energy, the output end of the energy storage cabinet (5) is connected to a heat pump host (11), and the heat in the ambient air is used to provide heating or cooling services, the output end of the heat pump host (11) is connected to an indoor heating device (6), and indoor heating is performed through a pipe heat sink, and the heat pump host (11) is characterized in that an air inlet mesh plate (12) is provided in the air inlet of the heat pump host (11), An air outlet (13) is arranged at the center position above the heat pump main unit (11); an air outlet protective cover (14) is arranged outside the air outlet (13); a cover frame (15) is arranged on the air outlet protective cover (14); a power component (2) is fixedly arranged at the center position of the cover frame (15), and is used to detect the degree of blockage of the air inlet mesh plate (12) by monitoring the wind speed of the air outlet (13), and automatically shake off dust on the air inlet mesh plate (12) and absorb debris in the air passing through the mesh holes of the air inlet mesh plate (12); The power assembly (2) comprises a wind tube (21), an internal air inlet end of the wind tube (21) being rotatably provided with a turbine blade (24), an outer wall of the turbine blade (24) being fixedly provided with a plurality of extrusion columns (25), and an inner wall of the wind tube (21) on one side of the turbine blade (24) being fixedly provided with a power box (26) for pulling the air inlet mesh plate (12) to vibrate; The air outlet end of the wind tube (21) is provided with a negative pressure mesh (22), the internal space of the wind tube (21) below the negative pressure mesh (22) and the internal space of the wind tube (21) where the turbine blades (24) are located are opposed to each other, and when the air outlet (13) exhausts air at a high speed, the internal space of the wind tube (21) below the negative pressure mesh (22) forms a negative pressure to absorb dust; The air inlet end of the internal space of the air duct (21) below the negative pressure mesh (22) is connected to a dredging component (3) for absorbing dust shaken off by the two air inlet mesh plates (12); the dredging component (3) comprises four negative pressure tubes (33) connected to the air inlet end of the internal space of the air duct (21) below the negative pressure mesh (22); and the four negative pressure tubes (33) are distributed along the hood frame (15).

2. A wind-electric heat pump system for coupled heating according to claim 1, characterized in that: The power box (26) comprises an inner hollow box (262) at the center thereof, a soft plate (263) being slidably disposed inside the inner hollow box (262), a push column (264) being fixedly disposed on one side of the soft plate (263) close to the turbine blade (24), and an end of the push column (264) close to the turbine blade (24) sequentially penetrating through a wall plate of the inner hollow box (262) and a wall plate of the power box (26).

3. A wind-electric heat pump system for coupled heating according to claim 2, characterized in that: An arc-shaped spring-loaded sheet (261) is fixedly provided at one end of the push column (264) close to the turbine blade (24); both ends of the spring-loaded sheet (261) are fixedly connected to the power box (26); and one side of the power box (26) close to the turbine blade (24) is an arc-shaped structure; the distance between the central end point of the spring-loaded sheet (261) and the outer wall of the turbine blade (24) is less than the length dimension of the extrusion column (25).

4. A wind-electric heat pump system for coupled heating according to claim 2, characterized in that: The upper wall of the inner hollow box (262) is provided with a pulley (271) rotatably connected to the power box (26), a pull belt (27) is wound around the pulley (271), and an end of the pull belt (27) away from the pulley (271) sequentially penetrates the wall panel of the power box (26) and the wall panel of the wind tube (21) and is distributed along the cover frame (15).

5. A wind-electric heat pump system for coupled heating according to claim 4, characterized in that: A swing arm plate (272) is fixedly provided at the center of the lower wall of the pulley (271); the swing arm plate (272) penetrates the upper wall of the inner empty box (262); and the lowest end of the swing arm plate (272) is lower than the highest end of the soft plate (263).

6. A wind-electric heat pump system for coupled heating according to claim 5, characterized in that: A push plate wheel (28) is provided at one end of the pull belt (27) away from the wind tube (21), and the push plate wheel (28) is located between the top plates of the two air inlet mesh plates (12) and is rotatably connected to the heat pump main unit (11). Semi-annular auxiliary push rings (281) are fixedly provided on both sides of the push plate wheel (28), and the arc directions of the auxiliary push rings (281) on both sides of the push plate wheel (28) are opposite. The two auxiliary push rings (281) push the two air inlet mesh plates (12) in turn to vibrate alternately.

7. The wind-electric heat pump system for coupled heating according to claim 1, characterized in that: An end of the negative pressure pipe (33) away from the wind tube (21) is fixedly connected to an ash box (31), and the wind tube (21) is communicated with the ash box (31) via the negative pressure pipe (33). The ash box (31) is fixed to the heat pump main unit (11) below the air inlet mesh plate (12), and a plurality of hoses (34) are fixedly provided on the upper wall of the ash box (31).

8. A wind-electric heat pump system for coupled heating according to claim 7, characterized in that: An end of the hose (34) away from the ash box (31) is provided with a wavy dust collection arm (321) which is staggered with the mesh holes of the air inlet mesh plate (12), and a plurality of dust collection arms (321) are provided. The hose (34) is interconnected with the two lowest rows of dust collection arms (321), and both ends of the dust collection arm (321) are fixedly connected with a support pipe (32), and a plurality of dust collection holes (322) are provided on the dust collection arm (321), and the dust collection arm (321) is interconnected with the ash box (31) via the support pipe (32).

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