CN113417873B

CN113417873B - Noise-reduction axial flow fan

Info

Publication number: CN113417873B
Application number: CN202110846826.XA
Authority: CN
Inventors: 楼益民; 任江琴; 任小平
Original assignee: Zhejiang Oudun Fan Co ltd
Current assignee: Zhejiang Oudun Fan Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-06-17
Anticipated expiration: 2041-07-26
Also published as: CN113417873A

Abstract

The application relates to a noise-reducing axial flow fan, which relates to the technical field of axial flow fans and comprises an air duct, a motor and fan blades, wherein the air duct is provided with a cooling device for cooling an output shaft of the motor, and the cooling device comprises a fan body and a fan blade; the guide block is arranged on the air duct and is provided with an air outlet hole facing to the output shaft of the motor; and the guide plate is arranged on the guide block and is used for guiding the wind generated by the fan blades into the air outlet. This application blows the motor output shaft through the exhaust vent with the leading-in exhaust vent of air through the guide plate on at last air to this cools down the motor output shaft, thereby has reduced the probability that motor output shaft warp the damage, has improved axial fan's life-span, has also reduced axial fan's noise simultaneously.

Description

Noise-reduction axial flow fan

Technical Field

The application relates to the technical field of axial flow fans, in particular to a noise reduction axial flow fan.

Background

The axial flow fan has a very wide application, namely, the axial flow fan and the fan blade have the same direction of air flow, such as an electric fan, and an air conditioner outer machine fan is an axial flow type running fan.

In the related art, reference can be made to the chinese utility model patent with the authority publication number CN209638054U, which discloses an energy-saving and environment-friendly axial flow fan, comprising an axial flow fan body and a movable base, wherein the axial flow fan body comprises a housing and a bracket, a sliding groove is formed on the housing, a sliding rod is arranged in the sliding groove, the sliding rod sequentially passes through the sliding groove and the bracket, the movable base is rotatably connected with the axial flow fan body through a rotating mechanism, the axial flow fan body comprises a fixed seat and a lifting seat, the upper end of the fixed seat is hinged with the axial flow fan body, a lifting plate is arranged in the lifting seat, the sliding rod is fixedly connected with the bracket, the sliding rod slides in the sliding groove to expose the internal structure of the axial flow fan outside the housing, the convenience of cleaning and maintenance is improved, the movable base and the axial flow fan are rotated through a rotating disk and a fixed disk, the air outlet direction of the axial flow fan is adjustable, the lifting seat is matched with the lifting plate which is elastically connected with the lifting seat, so that the height of the air outlet of the axial flow fan is adjusted relative to the height of the movable base, and the use convenience of the axial flow fan is improved.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the axial flow fan body is generally driven to operate by the motor, and after the motor operates for a long time, the temperature of an output shaft of the motor can be gradually increased, so that the motor output shaft is easily deformed and damaged due to overhigh temperature, and the service life of the axial flow fan is shortened.

Disclosure of Invention

In order to prolong the service life of the axial flow fan, the application provides the noise reduction axial flow fan.

The application provides a noise reduction axial flow fan adopts following technical scheme:

a noise reduction axial flow fan comprises an air duct, a motor arranged on the air duct and fan blades arranged on an output shaft of the motor, wherein a cooling device for cooling the output shaft of the motor is arranged on the air duct and comprises a fan blade and a fan blade;

the guide block is arranged on the air duct and is provided with an air outlet hole facing to the output shaft of the motor;

and the guide plate is arranged on the guide block and is used for guiding the wind generated by the fan blades into the wind outlet hole.

By adopting the technical scheme, the motor is started to drive the fan blades to rotate, air enters the air outlet hole under the action of the guide plate, and finally the air is blown onto the motor output shaft to cool the motor output shaft, so that the probability of deformation and damage of the motor output shaft is reduced, and the service life of the axial flow fan is prolonged; meanwhile, the probability of noise increase during the operation of the fan due to the deformation of the output shaft of the motor is reduced, and the noise of the axial flow fan is reduced.

Optionally, an air inlet cavity communicated with the air outlet hole is formed in the flow guide block, the flow guide plate comprises a first guide ring and a second guide ring which are annular, and the distance between the ends, close to the flow guide block, of the first guide ring and the second guide ring is smaller than the distance between the ends, far away from the flow guide block, of the first guide ring and the second guide ring; the air outlet is provided with a plurality of along the motor output shaft axis array, be provided with on the dryer and carry out refrigerated cooling device to the gas in the air inlet chamber.

Through adopting above-mentioned technical scheme, first guide ring and second guide ring lead to the air, consequently, the air that has increased the entering air inlet intracavity, the exhaust vent that the array set up has simultaneously increased the area of contact of air and motor output shaft, and the air cools off through cooling device, thereby the cooling effect of air to motor output shaft has been improved, the probability of motor output shaft deformation damage has further been reduced, air and motor housing contact behind the motor output shaft, the air continues to cool down motor housing, thereby the probability of motor high temperature and damage has been reduced, with this life-span that has improved axial fan.

Optionally, the cooling device comprises;

the cooling plate is arranged on the air inlet cavity, a cooling cavity is formed in the cooling plate, a plurality of through holes for air to pass through are uniformly distributed in the cooling plate, and the cooling plate is annular and in an inclined state;

the cooling box is arranged on the air duct and filled with cooling liquid;

the cooling pump is arranged on the cooling box and is communicated with the inside of the cooling box;

the liquid inlet pipe is arranged on the cooling pump and is communicated with the cooling cavity;

and the liquid return pipe is arranged on the cooling plate, is connected with the cooling box and is communicated with the cooling cavity.

By adopting the technical scheme, the cooling pump is started, the cooling liquid enters the cooling cavity through the liquid inlet pipe, the cooling liquid cools the cooling plate, finally the cooling liquid flows back into the cooling box through the liquid return pipe, the air enters the air outlet hole through the through hole in the cooling plate, and the cooling plate cools the air, so that the cooling effect of the air on the motor output shaft and the motor shell is improved;

and the cooling plate is the annular and is the tilt state, has consequently increased the area of contact of air with the cooling plate to improved the cooling effect of cooling plate to the air, the cooling plate can also lead the air simultaneously, makes the air that gets into in the air-out hole more even, thereby has reduced the probability that the air differs to the local cooling effect of motor output shaft, has improved the cooling effect of air to motor output shaft.

Optionally, a through hole for adding the cooling liquid is formed in the cooling box, a cover plate for blocking the through hole is arranged on the cooling box in a rotating mode, a liquid level detector for detecting the liquid level of the cooling liquid is arranged in the cooling box, and a display screen which is electrically connected with the liquid level detector and used for displaying the height of the cooling liquid is arranged on the outer side wall of the air duct.

Through adopting above-mentioned technical scheme, the liquid level detection appearance detects how much of coolant liquid, and display screen display shows how much of coolant liquid to can open the apron when the coolant liquid is not enough, add the coolant liquid to the cooler bin through the through-hole, thereby reduced the coolant liquid not enough and to the not good probability of motor output shaft cooling effect, thereby improved the cooling effect to motor output shaft, improved axial fan's life-span.

Optionally, the guide block is provided with a support ring, the support ring is provided with a plurality of supporting balls which are abutted to the guide block in a rotating manner, and the support ring is provided with a plurality of supporting balls which are abutted to the motor output shaft in a rotating manner.

By adopting the technical scheme, the supporting ball is supported on the motor output shaft, so that the stability of the motor output shaft during rotation is improved, the probability of damage caused by deformation of the motor output shaft is further reduced, and the service life of the axial flow fan is prolonged; and the bearing balls reduce the friction force between the supporting block and the flow guide block and reduce the probability of abrasion between the supporting block and the flow guide block.

Optionally, a dust screen is detachably arranged on the air duct, a cleaning device for cleaning the dust screen is arranged on the dust screen, and the cleaning device comprises;

the rotating sleeve is clamped and mounted on the dust screen;

the rotating rod is rotatably arranged on the rotating sleeve, the axis of the rotating rod is parallel to the axis of the motor output shaft, and the rotating rod is detachably connected with the motor output shaft through a connecting assembly;

the clearance board, the clearance board sets up on the dwang and the equipartition is provided with the brush of contradicting on the dust screen.

By adopting the technical scheme, the dust screen blocks the scraps, the probability that the scraps fall onto the motor is reduced, the probability that the motor is damaged by heating due to the reduction of the heat dissipation effect is reduced, and the service life of the axial flow fan is prolonged; the motor output shaft rotates to drive the rotating rod to rotate through the connecting component, the rotating rod rotates to drive the cleaning plate to rotate, and the brush on the cleaning plate cleans the scraps on the dustproof net, so that the speed of air passing through the dustproof net is increased, the quantity of air for cooling the motor output shaft and the motor shell is increased, the probability of damage of the motor output shaft and the motor due to heating is reduced, and the service life of the axial flow fan is prolonged;

meanwhile, the cleaning device is detachably connected with the dustproof net through the rotating sleeve, so that the convenience of detachment and installation of the cleaning device is improved.

Optionally, the connection assembly comprises;

the connecting sleeve is arranged on the output shaft of the motor;

the connecting block, the connecting block sets up on the dwang and cooperates with the adapter sleeve joint.

By adopting the technical scheme, the rotating sleeve is pulled to be separated from the dustproof net, the rotating sleeve moves to drive the rotating rod and the connecting block to move, and the connecting block is separated from the connecting sleeve, so that the cleaning device is detached; the rotating sleeve is clamped and installed on the dust screen, and meanwhile, the connecting block is matched with the connecting sleeve in a clamped mode, so that the cleaning device is installed.

Optionally, be provided with the support frame that supports the motor on the dryer, the support frame is including seting up the supporting disk of keeping away the position hole and setting up the bracing piece on the supporting disk, the bracing piece sets up a plurality ofly and is connected with the dryer around dryer axis circumference array, the motor sets up on the supporting disk and the output shaft wears out outside keeping away the position hole, the exhaust vent is the slope and sets up towards motor one side, the water conservancy diversion piece passes through the connecting rod setting on the supporting disk, form the runner that the heat supply gas passes through between water conservancy diversion piece and the supporting disk.

By adopting the technical scheme, the supporting force component is carried out on the supporting disc by the plurality of supporting rods, so that the stability of the motor during operation is improved; and the exhaust vent slope sets up towards the motor for more air and motor housing contact, then the air shifts out from the runner after to the motor housing contact, thereby has accelerated the giving off of heat on motor housing and the motor output shaft, has reduced motor output shaft and motor housing high temperature and the probability of damage, has improved axial fan's life-span.

Optionally, the dryer is including being first drum and the second drum of semicircle arcuation, first drum rotates to set up on the second drum and contradicts with the second drum, the bracing piece is connected with the second drum and contradicts with first drum, be provided with the fixing device who fixes first drum on the second drum.

The motor, the fan blades, the cooling device and the cooling device are all positioned in the air duct, so that the structures are troublesome to maintain after being damaged, and the convenience in maintaining the axial flow fan is reduced;

through adopting above-mentioned technical scheme, unblock fixing device then can rotate first drum and keep away from the second drum, consequently can maintain the structure that is located the dryer inside, and the maintenance is accomplished the back, rotates first drum and contradicts to the second drum, and locking fixing device is in the same place first drum and second drum fixed connection to convenience when having improved axial fan and having maintained.

Optionally, the fixing device comprises;

the fixed block is arranged on the second cylinder;

the clamping block is arranged on the first cylinder in a sliding mode and is in clamping fit with the fixing block;

and the fixed screw is in threaded connection with the clamping block, penetrates through the first cylinder and is in threaded connection with the supporting rod.

By adopting the technical scheme, the fixing screw is twisted to be separated from the supporting rod and the first cylinder, then the fixing screw can be pulled to drive the clamping block to move, so that the clamping block is separated from the fixing block, the first cylinder can be separated from the second cylinder, the first cylinder is rotated to be abutted against the second cylinder, the fixing screw is pulled to drive the clamping block to be clamped and matched with the fixing block, and finally the fixing screw is twisted to penetrate through the first cylinder to be in threaded connection with the supporting rod, so that the first cylinder and the second cylinder are fixedly connected; meanwhile, the connecting strength of the supporting rod and the first cylinder is increased by the fixing screw, and the supporting effect on the first cylinder is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the air is guided into the air outlet hole through the guide plate, and finally the air is blown onto the motor output shaft through the air outlet hole, so that the motor output shaft is cooled, the probability of deformation and damage of the motor output shaft is reduced, and the service life of the axial flow fan is prolonged;

2. the air is guided through the first guide ring and the second guide ring, so that the air entering the air inlet cavity is increased, the air is cooled through the cooling device, the cooling effect of the air on the motor output shaft is improved, the probability of deformation and damage of the motor output shaft is further reduced, the probability of too high temperature and damage of the motor is reduced, and the service life of the axial flow fan is prolonged.

Drawings

FIG. 1 is a schematic perspective view of the present application;

FIG. 2 is a schematic partial view of the present application, showing primarily the cooling device and the cooling device;

FIG. 3 is a schematic view of the cooling apparatus of the present application;

FIG. 4 is an enlarged schematic view of section A of FIG. 1;

FIG. 5 is a partial exploded view of the present application, showing primarily the cleaning apparatus and the connection assembly;

FIG. 6 is a schematic view of the cooling device of the present application;

fig. 7 is a schematic cross-sectional view of B-B in fig. 6.

Reference numerals: 1. an air duct; 11. a first cylinder; 12. a second cylinder; 121. a rotating shaft; 13. a support frame; 14. a support disc; 141. avoiding holes; 15. a support bar; 16. a motor; 17. a fan blade; 2. a fixing device; 21. a fixed block; 22. a clamping block; 23. fixing the screw rod; 24. a clamping groove; 3. a dust screen; 4. a cleaning device; 41. rotating the sleeve; 411. a positioning ring; 42. rotating the rod; 43. cleaning the plate; 5. a connecting assembly; 51. connecting sleeves; 52. connecting blocks; 53. a first insertion groove; 54. a second insertion groove; 55. a snap ring; 6. a cooling device; 61. a flow guide block; 611. a connecting rod; 612. a flow channel; 613. an air inlet cavity; 614. an air outlet; 615. a support ring; 616. supporting the balls; 617. carrying the ball; 618. a rotating groove; 62. a baffle; 63. a first guide ring; 64. a second guide ring; 7. a cooling device; 71. a cooling plate; 711. a cooling chamber; 712. a through hole; 72. a cooling tank; 73. a cooling pump; 74. a liquid inlet pipe; 75. a liquid return pipe; 81. a cover plate; 82. locking the screw rod; 83. a display screen.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses axial fan of making an uproar falls.

The model of the liquid level detector in the embodiment is MIK-P260.

Referring to fig. 1 and 2, the noise reduction axial flow fan comprises an air duct 1 and a motor 16 arranged on the air duct 1, wherein fan blades 17 are fixedly arranged on an output shaft of the motor 16, and a cooling device 6 for cooling the output shaft of the motor 16 is arranged on the air duct 1.

Referring to fig. 1 and 2, the air duct 1 includes a first cylinder 11 and a second cylinder 12 which are semi-arc shaped and have coincident axes, the first cylinder 11 is located above the second cylinder 12, a horizontal rotating shaft 121 is fixedly installed on an outer side wall of the second cylinder 12, the rotating shaft 121 is parallel to the axes of the first cylinder 11 and the second cylinder 12, the first cylinder 11 is rotatably installed on the rotating shaft 121, and side walls of opposite sides of the first cylinder 11 and the second cylinder 12 are abutted together.

Referring to fig. 2 and 3, a supporting frame 13 is disposed on the second cylinder 12, the supporting frame 13 includes a supporting plate 14 and a supporting rod 15, a circular avoiding hole 141 is coaxially disposed on the supporting plate 14, the supporting rod 15 is integrally disposed on a peripheral side wall of the supporting plate 14, and an axis of the supporting plate 14 coincides with an axis of the second cylinder 12.

Referring to fig. 1 and 2, four support rods 15 are circumferentially arranged around the axis of the support plate 14, and one end of three support rods 15 away from the support plate 14 is fixedly connected with the inner side wall of the second cylinder 12, while the other support rod 15 is abutted against the inner side wall of the first cylinder 11; meanwhile, one ends of the two support rods 15, which are far away from the support plate 14, are located at the contact position of the first cylinder 11 and the second cylinder 12, and the two support rods 15 are fixedly connected with the second cylinder 12 and abut against the first cylinder 11.

Referring to fig. 1 and 4, be provided with fixing device 2 that fixes first drum 11 on the second drum 12, fixing device 2 includes fixed block 21, joint piece 22 and clamping screw 23, fixed block 21 fixed mounting is on second drum 12 lateral wall, and joint piece 22 slides and installs on first drum 11 lateral wall, and joint piece 22 direction of sliding is parallel with first drum 11 axis direction, and fixed block 21 has seted up joint groove 24 on being close to the lateral wall of joint piece 22 one side, joint piece 22 cooperates with joint groove 24 joint.

Referring to fig. 2 and 4, the fixing screw 23 is screwed to the catching block 22 and penetrates through the first cylinder 11, and at the same time, the fixing screw 23 is screwed to the support rod 15 which abuts against the first cylinder 11 and is fixedly connected to the second cylinder 12.

Referring to fig. 2 and 3, the motor 16 is fixedly mounted on the side wall of the support plate 14, the output shaft of the motor 16 is overlapped with the axis of the support plate 14, and the diameter of the output shaft of the motor 16 is smaller than the diameter of the clearance hole 141 and penetrates out of the clearance hole 141.

Referring to fig. 1 and 2, the dust screen 3 is detachably mounted at one end of the first cylinder 11 and the second cylinder 12 close to the output shaft of the motor 16 through screws, the dust screen 3 is disc-shaped and provided with mounting holes, and the mounting holes coincide with the axis of the output shaft of the motor 16.

Referring to fig. 1 and 5, a cleaning device 4 for cleaning the dust screen 3 is arranged on the dust screen 3, the cleaning device 4 comprises a rotating sleeve 41, a rotating rod 42 and a cleaning plate 43, the rotating sleeve 41 is clamped and mounted on the mounting hole, and the axes of the rotating sleeve 41 and the mounting hole coincide.

Referring to fig. 1 and 5, a positioning ring 411 is coaxially and fixedly mounted at one end of the rotating sleeve 41 away from the second cylinder 12, and the positioning ring 411 abuts against the dust screen 3 for positioning; the rotating rod 42 is coaxially and rotatably installed on the rotating sleeve 41, and two ends of the rotating rod 42 respectively penetrate through the rotating sleeve 41 and are located at two sides of the dust screen 3.

Referring to fig. 2 and 5, the rotating rod 42 is detachably connected to the output shaft of the motor 16 through the connecting assembly 5, the connecting assembly 5 includes a connecting sleeve 51 and a connecting block 52, the connecting sleeve 51 is coaxially and fixedly mounted on the output shaft of the motor 16, and the fan blades 17 are fixedly mounted on the peripheral side wall of the connecting sleeve 51, meanwhile, a first inserting groove 53 is coaxially formed in one end of the connecting sleeve 51, which is far away from the output shaft of the motor 16, a second inserting groove 54 is formed in the side wall of the opposite side of the first inserting groove 53, and meanwhile, the second inserting groove 54 is communicated with one end of the connecting sleeve 51, which is close to the rotating rod 42.

Referring to fig. 2 and 5, a clamping ring 55 is coaxially and fixedly installed at one end of the rotating rod 42 close to the connecting sleeve 51, and the clamping ring 55 is in clamping fit with the first inserting groove 53; the two connecting blocks 52 are integrally arranged on the side wall of the clamping ring 55, the two connecting blocks 52 are respectively in clamping fit with the two second inserting grooves 54, and the connecting blocks 52 penetrate through the mounting holes when the connecting sleeve 51 is taken down; one end of the cleaning plate 43 is fixedly arranged at one end of the rotating rod 42 departing from the connecting sleeve 51, and the side wall of the cleaning plate 43 close to one side of the dust screen 3 is fixedly provided with bristles which are abutted against the dust screen 3.

Referring to fig. 2 and 6, the cooling device 6 includes a flow guiding block 61 and a flow guiding plate 62, the flow guiding block 61 is fixedly mounted on a side wall of the supporting plate 14 facing away from the motor 16 through a connecting rod 611, two ends of the connecting rod 611 are respectively fixedly connected with a side wall of one side of the flow guiding block 61 opposite to the supporting plate 14, and a flow passage 612 for hot air to pass through is formed in a space between the flow guiding block 61 and the supporting plate 14.

Referring to fig. 3 and 6, the guide block 61 is annular and the axis coincides with the axis of the output shaft of the motor 16, the inner diameter of the guide block 61 is the same as the diameter of the avoiding hole 141, and the outer diameter of the connecting sleeve 51 is smaller than the outer diameter of the guide block 61.

Referring to fig. 2 and 7, an annular air inlet cavity 613 is coaxially formed in one end of the flow guide block 61 close to the fan blade 17, an air outlet 614 communicated with the air inlet cavity 613 is formed in the inner side wall of the flow guide block 61, and the air outlet 614 is inclined toward one side of the output shaft of the motor 16, so that the distance from one end of the air outlet 614 close to the output shaft of the motor 16 to the support plate 14 is smaller than the distance from the other end of the air outlet 614 to the support plate 14, a plurality of air outlet 614 are circumferentially arrayed around the axis of the flow guide block 61, and a plurality of air outlet 614 are arrayed along the axis of the output shaft of the motor 16.

Referring to fig. 2 and 7, a rotating groove 618 is formed in the inner side wall of the flow guide block 61 and located on the side close to the fan blade 17, the rotating groove 618 is annular and the axis of the rotating groove 618 coincides with the axis of the flow guide block 61, and the air outlet 614 is located between the rotating groove 618 and the support plate 14; an annular support ring 615 is rotatably mounted on the rotation groove 618, a plurality of bearing balls 617 which are abutted against the rotation groove 618 are rotatably mounted on the support ring 615, and a plurality of support balls 616 which are abutted against an output shaft of the motor 16 are rotatably mounted on an inner annular surface of the support ring 615.

Referring to fig. 2 and 7, the baffle plate 62 includes a first guide ring 63 and a second guide ring 64 which are annular and located on two sides of the air inlet cavity 613 respectively, meanwhile, the first guide ring 63 is located on the outer side of the second guide ring 64, and the axes of the first guide ring 63 and the second guide ring 64 are coincident with the axis of the baffle block 61, the distance between the ends of the first guide ring 63 and the second guide ring 64 close to the air inlet cavity 613 is smaller than the distance between the ends of the first guide ring 63 and the second guide ring 64 far away from the air inlet cavity 613, and the first guide ring 63 and the second guide ring 64 are located on the outer side of the connecting sleeve 51, so that more air can enter the air inlet cavity 613; the second cylinder 12 is provided with a cooling device 7 for cooling the gas in the air inlet chamber 613.

Referring to fig. 3 and 7, the cooling device 7 includes a cooling plate 71, a cooling box 72, a cooling pump 73, a liquid inlet pipe 74 and a liquid return pipe 75, the cooling plate 71 is fixedly mounted on two opposite inner side walls of the air inlet chamber 613, the cooling plate 71 is annular, the axis of the cooling plate coincides with the axis of the air inlet chamber 613, the joint between the inner annular surface of the cooling plate 71 and the inner side wall of the air inlet chamber 613 is located at the side of the air outlet 614 away from the support plate 14, the cooling plate 71 is inclined, the distance between the inner annular surface of the cooling plate 71 and the support plate 14 is greater than the distance between the outer annular surface of the cooling plate 71 and the support plate 14, the cooling plate 71 is internally provided with a cooling chamber 711, and the side wall of the cooling plate 71 is provided with a plurality of through holes 712 penetrating through the cooling plate 71 and allowing air to pass through.

Referring to fig. 2 and 3, the cooling box 72 is fixedly mounted on the inner side wall of the second cylinder 12 and is filled with cooling liquid, a liquid adding hole convenient for adding the cooling liquid is formed in the top end of the cooling box 72, a cover plate 81 for blocking the liquid adding hole is rotatably mounted on the top end of the cooling box 72, a locking screw 82 in threaded connection with the cooling box 72 is connected onto the cover plate 81, a liquid level detector (not shown in the figure) for detecting the liquid level of the cooling liquid is fixedly mounted on the inner side wall of the cooling box 72, a display screen 83 is fixedly mounted on the outer side wall of the second air duct 1, and the display screen 83 is electrically connected with the liquid level detector and is used for displaying the liquid level.

Referring to fig. 3 and 7, the cooling pump 73 is fixedly installed on the outer side wall of the cooling tank 72 and is communicated with the inside of the cooling tank 72, the liquid inlet pipe 74 is fixedly installed on the cooling pump 73, the liquid inlet pipe 74 penetrates through the flow guide block 61 and is fixedly connected with the cooling plate 71, and meanwhile, the liquid inlet pipe 74 is communicated with the cooling chamber 711; the liquid return pipe 75 is fixedly installed on the cooling plate 71, the liquid return pipe 75 penetrates through the flow guide block 61 and is fixedly connected with the top end of the cooling box 72, and the liquid return pipe 75 is communicated with the cooling cavity 711 and the cooling box 72.

The working principle of the embodiment of the application is as follows:

the motor 16 drives the fan blade 17 to rotate, air enters the air inlet cavity 613 under the guidance of the first guide ring 63 and the second guide ring 64, then the air passes through the through hole 712 on the cooling plate 71, the cooling pump 73 is started, the cooling liquid enters the cooling cavity 711 through the liquid inlet pipe 74, then the cooling liquid cools the cooling plate 71, and finally the cooling liquid flows back into the cooling box 72 through the liquid return pipe 75, so that the cooling plate 71 cools the air, the cooled air blows on the output shaft of the motor 16 through the air outlet hole 614, and hot air is removed through the flow passage 612, so that the probability of deformation and damage of the output shaft of the motor 16 due to overhigh temperature is reduced, and the service life of the axial flow fan is prolonged; meanwhile, the probability of noise increase of the axial flow fan when the output shaft of the motor 16 deforms during operation is reduced, and the noise of the axial flow fan is reduced.

The output shaft of the motor 16 rotates to drive the connecting sleeve 51 to rotate, the connecting sleeve 51 rotates to drive the brush on the cleaning plate 43 to clean the dust screen 3, so that the dust of the motor 16 is prevented, the speed of air passing through the dust screen 3 is increased, the efficiency of the axial flow fan is improved, the quantity of air entering the air inlet cavity 613 is increased, the cooling effect on the output shaft of the motor 16 is improved, and the service life of the axial flow fan is prolonged.

When the rotating sleeve 41 is taken down, the clamping ring 55 and the connecting block 52 are pulled to be separated from the first insertion groove 53 and the second insertion groove 54 respectively, then a new cleaning plate 43 is replaced, the rotating sleeve 41 is clamped and installed on the installation hole, the clamping ring 55 and the connecting block 52 are respectively in clamping fit with the first insertion groove 53 and the second insertion groove 54, meanwhile, a screw can be screwed to replace the dust screen 3, and therefore the dust screen 3 and the cleaning device 4 can be replaced and installed conveniently.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an axial fan of making an uproar falls, includes dryer (1), sets up motor (16) on dryer (1) and sets up flabellum (17) on motor (16) output shaft, its characterized in that: the cooling device (6) for cooling the output shaft of the motor (16) is arranged on the air duct (1), and the cooling device (6) comprises;

the guide block (61) is arranged on the air duct (1) and provided with an air outlet hole (614) facing to an output shaft of the motor (16);

the guide plate (62) is arranged on the guide block (61) and is used for guiding wind generated by the fan blades (17) into the air outlet hole (614);

an air inlet cavity (613) communicated with the air outlet hole (614) is formed in the flow guide block (61), the flow guide plate (62) comprises a first guide ring (63) and a second guide ring (64) which are annular, and the distance between the ends, close to the flow guide block (61), of the first guide ring (63) and the second guide ring (64) is smaller than the distance between the ends, far away from the flow guide block (61); the air outlet holes (614) are arranged in a plurality of arrays along the axis of the output shaft of the motor (16), and the air duct (1) is provided with a cooling device (7) for cooling the air in the air inlet cavity (613);

the cooling device (7) comprises;

the cooling plate (71) is arranged on the air inlet cavity (613), a cooling cavity (711) is formed in the cooling plate (71), a plurality of through holes (712) for air to pass through are uniformly distributed in the cooling plate (71), and the cooling plate (71) is annular and in an inclined state;

the cooling box (72) is arranged on the air duct (1) and filled with cooling liquid;

a cooling pump (73), wherein the cooling pump (73) is arranged on the cooling tank (72) and is communicated with the inside of the cooling tank (72);

a liquid inlet pipe (74), the liquid inlet pipe (74) being provided on the cooling pump (73) and communicating with the cooling chamber (711);

a liquid return pipe (75), wherein the liquid return pipe (75) is arranged on the cooling plate (71), is connected with the cooling box (72) and is communicated with the cooling cavity (711);

the fan blade support structure is characterized in that the guide block (61) is arranged on one side close to the fan blade (17) and is rotatably provided with a support ring (615), the support ring (615) is rotatably provided with a plurality of bearing balls (617) which are abutted to the guide block (61), and the support ring (615) is rotatably provided with a plurality of support balls (616) which are abutted to an output shaft of the motor (16).

2. The noise-reducing axial flow fan according to claim 1, wherein: offer through-hole (712) so that add the coolant liquid on cooler bin (72), it is provided with apron (81) that block through-hole (712) to rotate on cooler bin (72), be provided with the liquid level detection appearance that detects the coolant liquid level in cooler bin (72), be provided with on dryer (1) lateral wall and be connected and be used for showing display screen (83) of coolant liquid height with the liquid level detection appearance electricity.

3. The noise-reducing axial flow fan according to claim 1, wherein: the dust screen (3) is detachably arranged on the air duct (1), a cleaning device (4) for cleaning the dust screen (3) is arranged on the dust screen (3), and the cleaning device (4) comprises;

the rotating sleeve (41), the rotating sleeve (41) is installed on the dust screen (3) in a clamping mode;

the rotating rod (42) is rotatably arranged on the rotating sleeve (41), the axis of the rotating rod (42) is parallel to the axis of the output shaft of the motor (16), and the rotating rod (42) is detachably connected with the output shaft of the motor (16) through the connecting component (5);

the dust-proof net comprises a cleaning plate (43), wherein the cleaning plate (43) is arranged on a rotating rod (42) and provided with brushes which are abutted to the dust-proof net (3) in an evenly distributed mode.

4. The noise-reducing axial flow fan according to claim 3, wherein: the connection assembly (5) comprises;

the connecting sleeve (51), the said connecting sleeve (51) is set up on the output shaft of the electrical machinery (16);

the connecting block (52), connecting block (52) set up on dwang (42) and with adapter sleeve (51) joint cooperation.

5. The noise-reducing axial flow fan according to claim 1, wherein: be provided with support frame (13) of supporting motor (16) on dryer (1), support frame (13) are including offering support disk (14) of keeping away a hole (141) and setting up bracing piece (15) on support disk (14), bracing piece (15) set up a plurality ofly and are connected with dryer (1) around dryer (1) axis circumference array, motor (16) set up on support disk (14) and the output shaft wears out to keep away outside a hole (141), exhaust vent (614) are the slope and set up towards motor (16) one side, water conservancy diversion piece (61) set up on support disk (14) through connecting rod (611), form between water conservancy diversion piece (61) and support disk (14) and supply runner (612) that steam passes through.

6. The noise-reducing axial flow fan according to claim 5, wherein: dryer (1) is including being first drum (11) and second drum (12) of semicircle arc-shaped, first drum (11) rotate set up on second drum (12) and contradict with second drum (12), bracing piece (15) are connected with second drum (12) and contradict with first drum (11), be provided with on second drum (12) and carry out fixing device (2) fixed to first drum (11).

7. The noise-reducing axial flow fan according to claim 6, wherein: the fixing device (2) comprises;

a fixed block (21), the fixed block (21) being disposed on the second cylinder (12);

the clamping block (22), the clamping block (22) is arranged on the first cylinder (11) in a sliding mode and is in clamping fit with the fixing block (21);

the fixing screw rod (23) is in threaded connection with the clamping block (22), penetrates through the first cylinder (11) and is in threaded connection with the supporting rod (15).