Electric welding with good thermal diffusivity
Technical Field
The invention relates to the technical field of electric welding machine heat dissipation, in particular to an electric welding machine with good heat dissipation performance.
Background
When steel plates are spliced, an electric welding machine is commonly used for welding the steel plates, but the existing electric welding machine is heavy, a large amount of heat generated inside the electric welding machine is not easy to discharge, the heat dissipation performance of the existing electric welding machine is poor, the heat inside the electric welding machine is not convenient to discharge quickly, internal electric elements are damaged by heat, the service life of the electric welding machine is influenced, the service life of the electric welding machine is shortened, meanwhile, the existing electric welding machine does not have the function of collecting smoke dust, the smoke dust is generated during welding, the smoke dust generated during welding easily causes air pollution, and the body health of an operator is easily influenced; therefore, a solution to the above problem is required.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an electric welding machine with good heat dissipation performance.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electric welding machine with good heat dissipation performance comprises a welding machine case, a linkage mechanism, a driving assembly, a transmission assembly, a filtering mechanism and an induction assembly, wherein a heat dissipation case is fixedly connected to one side of the welding machine case, a fixing plate is vertically and fixedly connected to the inside of the heat dissipation case, a plurality of mounting openings are uniformly formed in one side of the heat dissipation case, fan frames are mounted in the mounting openings, and air inlet fan blades are arranged on the inner wall of one side of each fan frame; a partition plate is horizontally and fixedly connected between the middle part of the inner wall of one side of the heat dissipation box and the fixed plate, a driving cavity is formed in the partition plate, the driving assembly is arranged in the driving cavity, and the upper part and the lower part of one side in the heat dissipation box are respectively provided with a linkage mechanism; the top surface and the bottom surface of the partition plate are provided with transmission assemblies; a rectangular wind collecting hopper is fixedly connected to the side of the other side of the fixing plate;
the middle part of the inner wall of the other side of the heat dissipation box is provided with a ventilation opening which penetrates through the welding machine box, and a ventilation box is fixedly arranged in the ventilation opening; ventilating fan blades are arranged in the ventilating box, an annular box is fixedly connected to the other side face of the fixing plate, a rotating shaft is arranged between the middle part of the other side of the fixing plate and the ventilating box, and an induction assembly is arranged in an inner ring of the annular box; the middle part of the other side surface of the fixed plate and the middle part of one side surface of the ventilation box are fixedly connected with first bearings, and two ends of the rotating shaft are fixedly connected in inner rings of the first bearings; a plurality of circular filtering openings are formed in the upper portion and the lower portion of the fixing plate at equal intervals, and each filtering opening is internally provided with a filtering mechanism.
Preferably, the linkage mechanism comprises transmission shafts, a rotating rod, a first bevel gear, a second bevel gear and a worm wheel, the transmission shafts are longitudinally arranged in the heat dissipation boxes at the upper end and the lower end of the partition plate, the inner walls of the heat dissipation boxes at the two ends of each transmission shaft are fixedly connected with second bearings, and the two ends of each transmission shaft are fixedly connected in the inner rings of the second bearings; third bearings are fixedly connected to the top and the bottom in the heat dissipation box, rotating rods are vertically and fixedly connected to inner rings of the third bearings, worm gears are fixedly connected to inner ends of the rotating rods, spiral teeth are arranged on rod bodies on two sides of the middle of the transmission shaft in a matched mode, and the worm gears are in meshed transmission with the transmission shaft; every the flabellum axle of flabellum admits air all runs through into the heat dissipation incasement to equal rigid coupling has second conical tooth, every the lower extreme is all fixed the cover and is equipped with first awl tooth on the body of rod of dwang, just first awl tooth all meshes the transmission with second conical tooth.
Preferably, the transmission assembly includes universal driving shaft, third awl tooth, fourth awl tooth, the equal rigid coupling in top surface and the bottom surface middle part of division board has the fourth bearing, equal vertical rigid coupling has the universal driving shaft in the inner circle of fourth bearing, the equal rigid coupling in outer end of universal driving shaft has the third awl tooth, the axis body middle part of transmission shaft is all fixed the cover and is equipped with the fourth awl tooth, just the transmission is all engaged with the fourth awl tooth to the third awl tooth.
Preferably, the driving assembly comprises a motor, a sixth bevel gear and a seventh bevel gear, the motor is transversely arranged in the driving cavity, and one end of the rotating shaft penetrates through the driving cavity and is coaxially and fixedly connected with a motor shaft of the motor; and a sixth bevel gear is fixedly arranged on the shaft body at one end of the rotating shaft, the inner end of the linkage shaft penetrates into the driving cavity, seventh bevel gears are fixedly connected with the inner end of the linkage shaft, and each seventh bevel gear is in meshing transmission with the sixth bevel gear.
Preferably, a closed cavity is formed in the bottom of the annular box, a water pump is vertically arranged in the closed cavity, heat dissipation cavities are formed in the upper portion and the lower portion of the inner wall of one side of the welding case, and the heat dissipation cavities are communicated; a liquid return pipe is arranged at the top of the annular box, a liquid inlet pipe is arranged at the liquid outlet end of the water pump, a connecting pipe is arranged at the liquid inlet end of the water pump, and the connecting pipe penetrates into the annular box; one end of the liquid return pipe and one end of the liquid inlet pipe penetrate into the heat dissipation cavity; and a liquid injection pipe is fixedly connected to one side of the top surface of the welding case in a vertical direction.
Preferably, the filtering mechanism comprises an installation pipe, a sealing plate, a first filter screen and a second filter screen, one end of the installation pipe is sealed, a plurality of air inlets are formed in the edge of the sealed end face of the installation pipe, the installation pipe is transversely and fixedly connected into the filter openings, the sealing plate is vertically and movably arranged on one side in the installation pipe, a plurality of fan-shaped openings are formed in one side face of the sealing plate at equal intervals, an installation ring is vertically and fixedly connected to the other side in the installation pipe, a plurality of fan-shaped first filter screens and a plurality of fan-shaped second filter screens are fixedly connected into the installation ring, and the first filter screens and the second filter screens are arranged in a staggered mode; and the closed end surfaces of the mounting pipes are provided with adjusting components.
Preferably, the adjusting assembly comprises fixing rods, electric push rods and eighth bevel gears, the closed end surfaces of the mounting pipes are fixedly connected with fifth bearings, the inner rings of the fifth bearings are transversely and fixedly connected with the fixing rods, the outer end of each fixing rod is fixedly connected with an electric push rod, and the inner end of each fixing rod penetrates through the inside of the mounting pipe and is fixedly connected with the closing plate; round rods are fixedly connected to the top of the telescopic end of each electric push rod, and an eighth bevel gear is fixedly connected to the top end of each round rod; the body of rod middle part of dwang is all fixed the cover and is equipped with fifth awl tooth, fifth awl tooth all meshes the transmission with eighth awl tooth.
Preferably, the induction assembly comprises a pushing plate, a fixed ring plate, a return spring, a guide rod, a first sensor and a second sensor, wherein an external thread is arranged on the surface of a rotating shaft body in the annular box inner ring, the pushing plate is movably arranged on the rotating shaft body with the external thread, and the pushing plate is provided with a threaded hole in a matched manner; the top and the bottom of the two sides of the propelling plate are fixedly connected with guide rods; the bottom both sides of annular case inner circle are fixed respectively and are equipped with first sensor and second sensor, the equal rigid coupling in both sides in the annular case inner circle has the fixed ring board, just the outer end of guide bar all moves about and runs through the fixed ring board, every equal horizontal rigid coupling has reset spring on the medial surface of fixed ring board, and every the guide bar all wears out from reset spring.
Preferably, a plurality of vent holes are formed in one side surface of the ventilation box, an air outlet hopper is fixedly mounted on the other side surface of the ventilation box, a collecting pipe is transversely and fixedly connected to the bottom of the other side surface of the heat dissipation box, and one end of the collecting pipe is communicated with the ventilation box; and an electronic valve is arranged on the pipe body of the air outlet hopper and the collecting pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. the driving assembly, the transmission assembly and the linkage assembly are matched for use, so that the air inlet fan blade can conveniently realize the effect of positive and negative rotation, and air can be conveniently sent into and out of the heat dissipation box; the effect of air circulation inside the heat dissipation box is improved conveniently, and the effect of the ventilating fan blades on heat dissipation inside the welding machine box is improved effectively; meanwhile, the induction assembly and the water pump are used, so that the heat dissipation effect on the welding case is further improved; the temperature inside the welding case is effectively reduced, and the condition that the service life of internal electrical components is shortened due to the fact that the temperature inside the welding case is high is effectively avoided; the problem that the existing welding machine is poor in heat dissipation performance when in use is solved;
2. the induction assembly and the filtering mechanism are matched for use, so that the smoke generated during welding can be conveniently collected and purified, and the pollution of the smoke generated during welding to the air environment can be conveniently prevented; the effective protection of an operator during operation is improved conveniently, and the operator is prevented from inhaling toxic gas; the protection effect on the human body of an operator is improved; the problem of current welding machine be not convenient for carry out the smoke and dust when using and collect and purify is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic cross-sectional front view of the present invention;
FIG. 2 is a schematic side sectional view of the heat dissipation box of the present invention;
FIG. 3 is an enlarged structural view of the portion A of FIG. 1;
FIG. 4 is an enlarged view of the structure of the portion B in FIG. 1 according to the present invention;
FIG. 5 is a schematic side sectional view of the ring box of the present invention;
FIG. 6 is a schematic cross-sectional view of the installation tube of the present invention;
FIG. 7 is a schematic view of a cross-sectional side view of an installation tube according to the present invention
FIG. 8 is a side view of the mounting tube of the present invention;
FIG. 9 is a schematic view of the other side of the mounting tube of the present invention;
number in the figure: 1. welding the case; 2. a heat dissipation box; 3. a fixing plate; 4. a fan frame; 5. an air intake fan blade; 6. a wind collecting hopper; 7. a partition plate; 8. ventilating fan blades; 9. a rotating shaft; 10. a drive shaft; 11. rotating the rod; 12. a first bevel gear; 13. a second taper tooth; 14. a worm gear; 15. a linkage shaft; 16. a third bevel gear; 17. a fourth bevel gear; 18. a fifth bevel gear; 19. an annular tank; 20. installing a pipe; 21. a motor; 22. a sixth bevel gear; 23. a seventh bevel gear; 24. a water pump; 25. a propulsion plate; 26. a stationary ring plate; 27. a closing plate; 28. a first filter screen; 29. a second filter screen; 30. fixing the rod; 31. an electric push rod; 32. an eighth bevel gear; 33. a return spring; 34. a guide bar; 35. a heat dissipation cavity; 36. a collection pipe; 37. an air outlet hopper; 38. a first sensor; 39. a second sensor; 40. an air inlet; 41. a fan-shaped opening.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1: referring to fig. 1-9, an electric welding machine with good heat dissipation performance comprises a welding machine case 1, a linkage mechanism, a driving assembly, a transmission assembly, a filtering mechanism and an induction assembly, wherein a heat dissipation case 2 is fixedly connected to one side of the welding machine case 1, a fixing plate 3 is vertically and fixedly connected to the inside of the heat dissipation case 2, a plurality of mounting ports are uniformly formed in one side of the heat dissipation case 2, a fan frame 4 is mounted in each mounting port, and an air inlet fan blade 5 is arranged on the inner wall of one side of each fan frame 4; a partition plate 7 is horizontally and fixedly connected between the middle part of the inner wall of one side of the heat dissipation box 2 and the fixed plate 3, a driving cavity is formed in the partition plate 7, a driving assembly is arranged in the driving cavity, and the upper part and the lower part of one side in the heat dissipation box 2 are both provided with a linkage mechanism; the top surface and the bottom surface of the partition plate 7 are provided with transmission components; a rectangular wind collecting hopper 6 is fixedly connected to the side of the other side of the fixed plate 3; the middle part of the inner wall of the other side of the heat dissipation box 2 is provided with a vent penetrating into the welding machine case 1, and a ventilation box is fixedly arranged in the vent; a ventilating fan blade 8 is arranged in the ventilating box, an annular box 19 is fixedly connected to the other side face of the fixing plate 3, a rotating shaft 9 is arranged between the middle part of the other side of the fixing plate 3 and the ventilating box, and an induction assembly is arranged in an inner ring of the annular box 19; the middle part of the other side surface of the fixed plate 3 and the middle part of one side surface of the ventilation box are fixedly connected with first bearings, and two ends of the rotating shaft 9 are fixedly connected in inner rings of the first bearings; the other end of the rotating shaft 9 penetrates into the ventilation box and is coaxially and fixedly connected with a fan blade rod of the ventilation fan blade 8; a plurality of circular shape filtration mouths have been seted up to the equal equidistance in upper portion and the lower part of fixed plate 3, all are equipped with filtering mechanism in every filtration mouth.
In the invention, the linkage mechanism comprises transmission shafts 10, a rotating rod 11, a first bevel gear 12, a second bevel gear 13 and a worm wheel 14, the transmission shafts 10 are longitudinally arranged in the heat dissipation boxes 2 at the upper end and the lower end of the partition plate 7, the inner walls of the heat dissipation boxes 2 at the two ends of each transmission shaft 10 are fixedly connected with second bearings, and the two ends of each transmission shaft 10 are fixedly connected in the inner rings of the second bearings; third bearings are fixedly connected to the top and the bottom in the heat dissipation box 2, rotating rods 11 are vertically and fixedly connected to the inner ring of each third bearing, worm gears 14 are fixedly connected to the inner ends of the rotating rods 11, spiral teeth are arranged on rod bodies on two sides of the middle of the transmission shaft 10 in a matched mode with the worm gears 14, and the worm gears 14 are in meshed transmission with the transmission shaft 10; the fan blade shaft of each air inlet fan blade 5 penetrates through the heat dissipation box 2 and is fixedly connected with a second bevel gear 13, the upper end and the lower end of the rod body of each rotating rod 11 are fixedly sleeved with a first bevel gear 12, and the first bevel gear 12 is in meshing transmission with the second bevel gear 13; the transmission assembly comprises a linkage shaft 15, third bevel teeth 16 and fourth bevel teeth 17, fourth bearings are fixedly connected to the middle portions of the top surface and the bottom surface of the partition plate 7, the linkage shaft 15 is vertically and fixedly connected to the inner ring of each fourth bearing, the third bevel teeth 16 are fixedly connected to the outer ends of the linkage shafts 15, the fourth bevel teeth 17 are fixedly sleeved on the middle portions of shaft bodies of the transmission shafts 10, and the third bevel teeth 16 and the fourth bevel teeth 17 are in meshing transmission; the driving assembly comprises a motor 21, a sixth bevel gear 22 and a seventh bevel gear 23, the motor 21 is transversely arranged in the driving cavity, and one end of the rotating shaft 9 penetrates through the driving cavity and is coaxially and fixedly connected with a motor shaft of the motor 21; sixth bevel teeth 22 are fixedly arranged on a shaft body at one end of the rotating shaft 9, the inner ends of the linkage shafts 15 penetrate through the driving cavity and are fixedly connected with seventh bevel teeth 23, and each seventh bevel tooth 23 is in meshing transmission with the sixth bevel teeth 22.
In the invention, a closed cavity is arranged at the bottom in the annular box 19, a water pump 24 is vertically arranged in the closed cavity, heat dissipation cavities 35 are respectively arranged at the upper part and the lower part of the inner wall of one side of the welding case 1, and the heat dissipation cavities 35 are communicated; a liquid return pipe is arranged at the top of the annular box 19, a liquid inlet pipe is arranged at the liquid outlet end of the water pump 24, a connecting pipe is arranged at the liquid inlet end of the water pump 24, and the connecting pipe penetrates into the annular box 19; one end of the liquid return pipe and one end of the liquid inlet pipe penetrate into the heat dissipation cavity 35; a liquid injection pipe is vertically and fixedly connected to one side of the top surface of the welding case 1; a plurality of vent holes are formed in one side face of the ventilation box, an air outlet hopper 37 is fixedly mounted on the other side face of the ventilation box, a collecting pipe 36 is transversely and fixedly connected to the bottom of the other side face of the heat dissipation box 2, and one end of the collecting pipe 36 is communicated with the ventilation box; electronic valves are arranged on the pipe bodies of the air outlet hopper 37 and the collecting pipe 36; when air supply and heat dissipation are carried out, the electronic valve on the air outlet hopper 37 is opened, the electronic valve on the collecting pipe 36 is closed, when smoke is collected, the electronic valve on the air outlet hopper 37 is closed, and the electronic valve on the collecting pipe 36 is opened.
In the invention, the filtering mechanism comprises a mounting pipe 20, a closing plate 27, a first filter screen 28 and a second filter screen 29, wherein one end of the mounting pipe 20 is arranged in a closed manner, a plurality of air inlets 40 are formed in the edge of the closed end face of the mounting pipe 20, the air inlets 40 are all in a fan shape, the mounting pipe 20 is transversely and fixedly connected in the filter screen, the closing plate 27 is vertically and movably arranged on one side in the mounting pipe 20, a plurality of fan-shaped openings 41 are formed in one side face of the closing plate 27 at equal intervals, a mounting ring is vertically and fixedly connected to the other side in the mounting pipe 20, a plurality of fan-shaped first filter screens 28 and a plurality of fan-shaped second filter screens 29 are fixedly connected in the mounting ring, and the first filter screens 28 and the second filter screens 29 are arranged in a staggered manner; the first filter screen 28 is used for filtering dust in air during air supply, and the second filter screen 29 is used for purifying and filtering collected smoke dust; the closed end surfaces of the mounting pipes 20 are provided with adjusting components; the adjusting assembly comprises fixing rods 30, electric push rods 31 and eighth bevel gears 32, fifth bearings are fixedly connected to the closed end faces of the mounting pipes 20, the fixing rods 30 are transversely and fixedly connected to the inner rings of the fifth bearings, the electric push rods 31 are fixedly connected to the outer ends of the fixing rods 30, and the inner ends of the fixing rods 30 penetrate through the mounting pipes 20 and are fixedly connected with the closing plates 27; round rods are fixedly connected to the top of the telescopic end of the electric push rod 31, and an eighth bevel gear 32 is fixedly connected to the top end of each round rod; the body of rod middle part of dwang 11 all fixes the cover and is equipped with fifth awl tooth 18, and fifth awl tooth 18 all meshes the transmission with eighth awl tooth 32.
In the invention, the induction component comprises a pushing plate 25, a fixed ring plate 26, a return spring 33, a guide rod 34, a first sensor 38 and a second sensor 39, wherein the surface of the shaft body of a rotating shaft 9 in the inner ring of an annular box 19 is provided with an external thread, the pushing plate 25 is movably arranged on the shaft body of the rotating shaft 9 provided with the external thread, and the pushing plate 25 is provided with a threaded hole in a matching way; the top and the bottom of the two sides of the pushing plate 25 are fixedly connected with guide rods 34; the bottom both sides of annular case 19 inner circle are fixed respectively and are equipped with first sensor 38 and second sensor 39, and the equal rigid coupling in both sides in the annular case 19 inner circle has fixed ring board 26, and the outer end of guide bar 34 all activity runs through fixed ring board 26, and equal horizontal rigid coupling has reset spring 33 on the medial surface of every fixed ring board 26, and every guide bar 34 all wears out from reset spring 33.
Example 2: in this embodiment, the present invention further provides a method for using an electric welding machine with good heat dissipation performance, including the following steps:
firstly, completing installation of electrical components in a welding machine box 1, and then electrically connecting a motor 21, an electric push rod 31, a first sensor 38 and a second sensor 39 with a controller in the welding machine box 1 respectively, and then electrically connecting the controller with an external power supply; then, the cooling liquid is conveniently injected into the annular box 19 through the heat dissipation cavity 35 through the liquid injection pipe until the annular box 19 is filled with the cooling liquid;
step two, when the interior of the welding case 1 needs to be cooled, the rotating shaft 9 is driven to rotate through the controlled motor 21, the sixth bevel gear 22 is driven to rotate conveniently through the rotation of the rotating shaft 9, the linkage shaft 15 is driven to rotate conveniently through the meshing transmission of the sixth bevel gear 22 and the seventh bevel gear 23, meanwhile, the ventilating fan blades 8 are driven to rotate by the rotating shaft 9, air in the cooling case 2 is blown into the welding case 1 through the air outlet hopper 37 conveniently through the ventilating fan blades 8, and the cooling effect of electric elements in the welding case 1 is achieved conveniently;
step three, the third bevel gear 16 is conveniently driven to rotate through the rotation of the linkage shaft 15, the transmission shaft 10 is conveniently driven to rotate through the meshing transmission of the third bevel gear 16 and the fourth bevel gear 17, the worm gear 14 is conveniently driven to rotate through the spiral teeth arranged on the transmission shaft 10, the rotating rod 11 is conveniently driven to rotate through the rotation of the worm gear 14, the first bevel gear 12 is conveniently driven to rotate through the rotation of the rotating rod 11, the fan blade shaft of the air inlet fan blade 5 is conveniently driven to rotate through the transmission of the first bevel gear 12 and the second bevel gear 13, the air inlet fan blade 5 is conveniently driven to blow air into the heat dissipation box 2 through the rotation of the fan blade shaft, the circulation effect of air in the heat dissipation box 2 is conveniently improved, and the welding machine box 1 and the heat dissipation box 2 are convenient to realize the air circulation effect; the heat dissipation effect of the electrical elements in the welding case 1 is improved conveniently;
step four, when the rotating shaft 9 rotates to supply air, the pushing plate 25 in the middle of the rod body is convenient to move towards one side of the fixed plate 3, the return spring 33 on the fixed ring plate 26 on one side of the inner ring of the annular box 19 is convenient to compress through the continuous movement of the pushing plate 25, the pushing plate 25 is convenient to separate from the external thread on the surface of the rotating shaft 9, the pushing plate 25 is convenient to not move transversely, when the pushing plate 25 moves transversely towards one side, the first sensor 38 on one side of the inner ring of the annular box 19 senses the pushing plate 25, then the first sensor 38 transmits the sensed signal to the controller in the welding machine box 1, then the signal transmitting end of the controller sends a starting instruction to the water pump 24, then the cooling liquid is extracted from the annular box 19 through the water pump 24 and is conveyed into the heat dissipation cavity 35, then the cooling liquid in the heat dissipation cavity 35 flows back into the annular box 19 through the liquid return pipe, and the effect of circulating heat dissipation of the cooling liquid in the annular box 19 is realized through the heat dissipation cavity 35 by starting the water pump 24, the heat dissipation effect of electrical elements inside the welding case 1 is further improved;
and fifthly, during welding operation of the welding machine, smoke is easily generated, one end of the collecting pipe 36 is placed at a welding position, then the control driving assembly drives the rotating shaft 9 to rotate reversely, the ventilating fan blades 8 are driven to exhaust air conveniently by reverse rotation of the rotating shaft 9, and the pushing plate 25 is moved to one side of the welding machine case 1 conveniently by the pushing plate 25 when the rotating shaft 9 rotates reversely. The second sensor 39 on the other side of the inner ring of the annular box 19 can sense the push plate 25 conveniently, then the second sensor 39 transmits the sensed signal to the controller in the welding machine box 1, then the signal transmission end of the controller sends an extension instruction to the electric push rod 31, the duration of the extension instruction is two seconds, the electric push rod 31 can stretch to push the eighth bevel gear 32 to be meshed with the fifth bevel gear 18 for transmission, the fixing rod 30 fixedly connected with the electric push rod 31 can be driven to rotate through the meshing of the eighth bevel gear 32 and the fifth bevel gear 18, the closing plate 27 can be driven to rotate through the rotation of the fixing rod 30, and the sector port of the closing plate 27 can be communicated with the second filter screen 29 through the rotation of the closing plate 27; the second filter screen 29 is used for conveniently purifying and filtering the smoke dust collected by the ventilating fan blades 8;
and step six, the driving assembly is convenient to drive to rotate reversely by the rotation of the rotating shaft 9, the linkage mechanism is convenient to drive to rotate reversely by the reverse rotation of the rotating assembly, the air inlet fan blades 5 are convenient to drive to rotate reversely by the reverse rotation of the linkage mechanism, and the filtered air in the heat dissipation box 2 is convenient to discharge by the reverse rotation of the air inlet fan blades 5.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.