JP2012170837A - Atomizer and unmanned helicopter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an atomizer in which a chemical is uniformly spread to the outer peripheral end of a disk to uniformalize the size of particles of the chemical discharged to the outside of the disk and thereby, the chemical is uniformly sprayed to a predetermined position.SOLUTION: In the atomizer 60, a plurality of doughnut-like disks 70, 70, ..., are arranged to be piled so that gaps are formed among the disks 70, 70, ..., respectively and the chemical flowing into the gap between the disks 70, 70, ..., is discharged and sprayed from the outer peripheral end of the disks 70, 70, ..., by rotating the disks 70, 70, ..., to apply centrifugal force. The disk 70 has a plurality of projections 75, 75, ..., on the outer peripheral end and a plurality of guide grooves 78a, 78b extending from the center side of the disk 70 toward the outer peripheral end side to reach the tip of the projections 75 are formed on the upper surface 70a or the back surface 70b of the disk 70.

Description

  The present invention relates to an atomizer for spraying a liquid chemical and an unmanned helicopter technology including the atomizer.

2. Description of the Related Art Conventionally, there are nozzle type and atomizer type chemical liquid spraying apparatuses that spray a liquid chemical liquid in the air from an unmanned helicopter in flight toward a farm field. An atomizer-type spraying device (hereinafter referred to as an atomizer) has a configuration in which a plurality of donut-shaped disks are arranged so as to form a gap between the disks (see Patent Document 1).
The atomizer disk has a plurality of protrusions on its outer peripheral edge.
In the atomizer, when the disk rotates, the chemical liquid that has flowed into the gap between the disks by centrifugal force is discharged from the outer peripheral end of the disk. At this time, the chemical solution is discharged from the tip of each protrusion at the outer peripheral end of the disk, thereby reducing the particle size and atomizing.
As described above, in the atomizer, the chemical solution is sprayed.

JP 10-337146 A

However, in the conventional atomizer, the chemical solution does not spread uniformly at the outer peripheral end of the disk, and there may be a large difference in the amount of the chemical solution that reaches the tip portion due to each protrusion in the disc.
And if the difference of the flow volume of the chemical | medical solution to each processus | protrusion in a disk is large, a difference will also become large also about the magnitude | size of the particle size of the chemical | medical solution discharged | emitted on the outer side of a disk. If there is a large difference in the size of the particle size of the chemical solution, some of the chemical solution that is discharged to the outside of the disk and sprayed may be unnecessarily widened by the air flow of the main rotor, or a certain range In such a case, there are things that are intensively sprayed.
As described above, in the conventional atomizer, the chemical solution does not spread uniformly at the outer peripheral edge of the disk, and the difference in the size of the particle size of the chemical solution released to the outside of the disk is large. There was a problem that it could not be sprayed.

  The present invention has been made in view of the situation as described above, and more uniformly distributes the chemical liquid to the outer peripheral end of the disk, makes the particle size of the chemical liquid released to the outside of the disk more uniform, desired It is an object of the present invention to provide an atomizer capable of more uniformly spraying a chemical solution at the position.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, in claim 1, a plurality of donut-shaped disks are arranged so as to form gaps between the disks, and the gaps between the disks are caused by centrifugal force by rotating the disks. An atomizer that discharges and discharges the chemical liquid that has flowed into the disk from the outer peripheral end of the disk, the disk having a plurality of protrusions at the outer peripheral end of the disk, and the upper surface or the lower surface of the disk A plurality of guide grooves formed so as to reach the tip of the protrusion from the center side of the disk toward the outer peripheral end side of the disk.

  According to a second aspect of the present invention, the gaps between the disks are formed to have different intervals on the inner peripheral side and the outer peripheral side.

  In Claim 3, it is arrange | positioned so that an outer end may be located outside the center hole formed in the center of the said disk, and inside the outer peripheral end in the said disk while it arrange | positions above these several disks. And a scattering prevention cover.

  In Claim 4, it is set as an unmanned helicopter provided with the atomizer as described in any one of Claims 1-3.

  As effects of the present invention, the following effects can be obtained.

  That is, according to the present invention, the chemical solution is distributed more uniformly on the outer peripheral edge of the disc, the size of the particle size of the chemical solution released to the outside of the disc is made more uniform, and the chemical solution is more uniformly distributed at a desired position. Can be sprayed on.

According to the second aspect of the present invention, for example, when the inner circumferential side interval is configured to be narrower than the outer circumferential side interval, the flow rate of the chemical liquid flowing into the gap between the disks is limited, and the flowing chemical liquid is smoothly It is possible to spread the chemical liquid more uniformly by reaching the outer peripheral edge of. On the contrary, if the outer peripheral side interval is configured to be narrower than the inner peripheral side interval, the drug solution is discharged from the outer peripheral end by receiving a higher pressure on the outer peripheral side, thereby reducing the particle size of the chemical solution. be able to.
Therefore, it is possible to spread the chemical liquid more uniformly on the outer peripheral edge of the disk, to make the size of the particle size of the chemical liquid released toward the outside of the disk more uniform, and to distribute the chemical liquid more uniformly at a desired position. it can.

  According to the invention which concerns on Claim 3, it is a simple structure and it can prevent that the chemical | medical solution adhering to the outer surface or inner surface of a scattering prevention cover gathers, dripping out of an atomizer, and can spray a chemical | medical solution reliably.

  According to the invention of claim 4, the chemical solution is more uniformly distributed on the outer peripheral end of the disk of the atomizer, the size of the particle size of the chemical solution released to the outside of the disk is made more uniform, and the desired position is obtained. The chemical solution can be more uniformly sprayed.

The side view which showed the whole structure of the unmanned helicopter provided with the atomizer which concerns on embodiment of this invention. Similarly front view. Side surface sectional drawing which showed the whole structure of the atomizer which concerns on embodiment of this invention. The top view which showed the disk of the atomizer which concerns on embodiment of this invention. Similarly back view. Similarly side sectional drawing. (A) is also a partially enlarged plan view, (b) is also a partially enlarged back view, and (c) is also a partially enlarged front view. The partially expanded side surface sectional view of the atomizer which concerns on embodiment of this invention. Similarly a partially enlarged side sectional view.

  Next, an atomizer 60 according to an embodiment of the present invention will be described with reference to FIGS. In the following description, the direction of the arrow A shown in FIG. 1 is defined as the front of the unmanned helicopter 1 to which the atomizer 60 is attached.

First, the overall configuration of the unmanned helicopter 1 will be described.
The unmanned helicopter 1 flies by remote control and sprays the chemical liquid on the field. As shown in FIG. 1 or 2, the main rotor 3, the tail rotor 4, the chemical liquid spraying device 5, the engine 7, And a body frame 9 and the like.

In the unmanned helicopter 1, the engine 7 and the pump of the chemical solution spraying device 5 are mounted on the body frame 9, the engine 7 and the pump are covered with the cover 8, and the skid 11 is fixed to the lower part of the body frame 9. The skid 11 is provided so as to project downward from the left and right sides to support the aircraft. A rotary shaft 31 and a pump are linked to the output shaft of the engine 7.
The rotating shaft 31 is configured to protrude upward from the body frame 9. The main rotor 3 and the stabilizer 32 are fixed to the rotating shaft 31 at the upper part of the machine body. The main rotor 3 is provided at the upper part of the body of the unmanned helicopter 1 and can be driven to rotate by the engine 7 mounted on the body frame 9. The main rotor 3 changes the lift applied to the airframe by its rotational drive, so that the airframe is levitated in the air, and the airframe is raised or lowered. The main rotor 3 can change its rotational speed and the inclination formed by the blade surface of the main rotor 3 and the rotation shaft 31 of the main rotor 3. The main rotor 3 applies a force for moving in the front-rear direction or the left-right direction to the airframe by tilting the rotary shaft 31 in the front-rear direction or the left-right direction of the airframe.

  The tail rotor 4 is provided at the rear part of the beam 10 projecting from the rear part of the airframe, and can be driven to rotate by the engine 7. The tail rotor 4 changes the magnitude of the force that counteracts the reaction torque (force to rotate the machine body in the direction opposite to the direction in which the main rotor 3 rotates) acting on the machine body by the rotation of the main rotor 3. Is turned right or left, or the direction of the nose is held in a substantially constant direction. The tail rotor 4 can change the rotation speed and the inclination formed between the blade surface of the tail rotor 4 and the rotation axis of the tail rotor 4.

The chemical solution spraying device 5 of the unmanned helicopter 1 is a device that sprays a liquid chemical solution from the unmanned helicopter 1 in flight toward the field.
The chemical liquid spraying device 5 of the unmanned helicopter 1 includes a chemical liquid tank 52, a spraying device body 53, a center nozzle 54, a boom 55, and an atomizer 60.

  The spraying device main body 53 includes a pump, a filter, a solenoid valve, and the like, and is disposed at the front, rear, left, and right central portions of the body frame 9. The pump of the spraying device main body 53 is driven by the engine 7, sucks the chemical liquid stored in the chemical liquid tank 52, and pumps it to the center nozzle 54 or the atomizer 60 via a filter or an electromagnetic valve. The electromagnetic valve of the spraying device main body 53 switches the flow of the chemical solution such as spraying of the chemical solution or returning the chemical solution to the chemical solution tank 52 by remote control.

  The chemical liquid tank 52 is a container for storing a chemical liquid. The chemical liquid tank 52 includes a pair of left and right chemical liquid tanks 52, 52. The chemical liquid tank 52 is disposed in the vicinity of the left side and the right side of the machine body, and is attached to the machine body frame 9 via the support frame 51. The chemical tanks 52 and 52 and the pump of the spraying device main body 53 are communicated with each other via a hose.

  The center nozzle 54 communicates with the pump of the spraying device main body 53 via the electromagnetic valve and the hose of the spraying device main body 53, and sprays the chemical liquid supplied from the chemical liquid tank 52. The center nozzle 54 protrudes downward and is attached to the left and right center from the rear part of the body frame 9, is arranged so that the nozzle hole faces downward, and is configured to spray downward in the body body.

  The boom 55 extends from the lower part of the body frame 9 below the spraying device main body 53 in the left and right horizontal outward directions, and the left and right ends are bent obliquely downward.

The atomizer 60 is a device that communicates with the pump of the spraying device main body 53 via the solenoid valve and the hose of the spraying device main body 53 to reduce the particle size of the chemical liquid supplied from the chemical liquid tank 52 and sprays it. As shown in FIG. 2, the atomizer 60 of the chemical solution spraying device 5 is attached to the left part and the right part of the boom 55 (outside the machine body).
As shown in FIG. 3, the atomizer 60 includes a motor cover 61 in which the motor is disposed, a scattering prevention cover 62, a drive shaft 63, a chemical solution supply pipe 65, a plurality of disks 70, 70,. And having.

The scattering prevention cover 62 of the atomizer 60 is for preventing the sprayed chemical solution from scattering upward, and is disposed below the motor cover 61 and above the plurality of disks 70, 70. The
The drive shaft 63 of the atomizer 60 is rotationally driven with the motor as power, and is disposed so as to protrude downward from the motor. A fixed plate 64 is fixed to the lower part of the drive shaft 63 of the atomizer 60.
The chemical solution supply pipe 65 of the atomizer 60 supplies the chemical solution supplied from the chemical solution tank 52 through the pump of the spraying device main body 53 into the atomizer 60, and penetrates the side wall of the scattering prevention cover 62, The tip is disposed in the scattering prevention cover 62 (in the vicinity of the drive shaft 63).

In the atomizer 60, four disks 70, 70... Are provided.
The disks 70, 70... Of the atomizer 60 are arranged below the scattering prevention cover 62 and above the fixed plate 64 so as to overlap each other.

As shown in FIGS. 4 to 6, the disk 70 of the atomizer 60 is formed in a donut shape with a central hole 71 formed in the center thereof.
The disk 70 of the atomizer 60 has a recess 74 formed in an annular shape in the middle of its radius. The recess 74 in the disk 70 of the atomizer 60 is formed between the outer peripheral edge 72 and the inner peripheral edge 73.

  The disk 70 of the atomizer 60 is configured such that its outer peripheral end is formed in a jagged shape. The disc 70 of the atomizer 60 is configured such that the outer periphery thereof is formed in a triangular wave shape in plan view and has a plurality of triangular protrusions 75, 75,. 7).

The disk 70 of the atomizer 60 has a plurality of projecting portions 76, 76... On the lower surface 70 b of the recessed portion 74 projecting downward in a cylindrical shape and formed at predetermined angles.
In the present embodiment, five protrusions 76 on the disk 70 of the atomizer 60 are formed, but the number is not limited.
A screw hole 77 through which the screw 80 is inserted is formed in the protruding portion 76 of the disk 70 of the atomizer 60 so as to penetrate in the vertical direction.
The protrusion 76 in the disk 70 of the atomizer 60 is formed so that its height is about the plate thickness of the disk 70, and a gap is formed between the disks 70 by the protrusion 76. That is, in the atomizer 60, a plurality of (four) disks 70, 70,... Are stacked with the positions of the protrusions 76, 76,. When these are fixed, the lower surface of the projecting portion 76 comes into contact with the upper surface 70a of the disk 70, and a gap is formed between the disk 70 and the disk 70 immediately below.

As shown in FIG. 3, the discs 70, 70... Of the atomizer 60 are arranged so that the drive shafts 63 are inserted into the central holes 71 and overlap each other. The screws 80, 80,... Are inserted into and fixed to the screw holes 77, 77.
In the atomizer 60, by rotating the drive shaft 63 in this state, the disks 70, 70... And the fixed plate 64 rotate as a unit.

In the atomizer 60 configured as described above, the chemical liquid is discharged from the chemical liquid supply pipe 65 toward the dispersion guide 62 c that protrudes downward from the inner surface of the anti-scattering cover 62. The chemical solution discharged and dispersed by the dispersion guide 62c flows down toward the central hole 71 and falls on the fixed plate 64, so that the disks 70, 70. It flows into the gap between the disks 70 and 70 from the 71 side, and is discharged from the gap between the disks 70 and 70 to the outside of the outer peripheral end. At this time, in the atomizer 60, since the said chemical | medical solution is discharge | released from the front-end | tip part of each processus | protrusion 75 * 75 ... in the outer peripheral end of the disk 70, the particle diameter can be made small and it sprays in mist form. Can do.
In this way, the atomizer 60 sprays the chemical liquid supplied from the chemical liquid supply nozzle 92.

Further, as shown in FIGS. 4 to 7, the disk 70 of the atomizer 60 has a plurality of guide grooves 78a and 78b on the upper surface 70a or the lower surface 70b, respectively.
The guide grooves 78 a and 78 b in the disk 70 of the atomizer 60 guide the chemical liquid that has flowed into the gap between the disks 70 and 70 from the center hole 71 side so as to spread uniformly by the outer peripheral end of the disk 70.

A guide groove 78a on the upper surface 70a of the disk 70 of the atomizer 60 is formed on the outer peripheral edge 72 of the upper surface 70a. The guide groove 78 a on the upper surface 70 a of the disk 70 of the atomizer 60 is formed from the outer peripheral end (the tip of the protrusion 75) to the boundary portion between the outer peripheral edge 72 and the concave portion 74.
A guide groove 78 a on the upper surface 70 a of the disk 70 of the atomizer 60 is formed so as to reach the tip of the protrusion 75. The guide groove 78a on the upper surface 70a of the disk 70 of the atomizer 60 is formed so as to be arranged for each of the protrusions 75, 75.
A guide groove 78a on the upper surface 70a of the disk 70 of the atomizer 60 is formed from the tip of each projection 75 toward the center. That is, the guide groove 78a is formed in the radial direction for each of the protrusions 75, 75.
The ends on the center side of the guide grooves 78a, 78a,... Of the upper surface 70a of the disk 70 of the atomizer 60 have a shape that widens in a funnel shape in plan view.

The guide groove 78b on the lower surface 70b of the disk 70 of the atomizer 60 is formed from the outer peripheral edge 72 to the recess 74 of the lower surface 70b. The guide groove 78b on the lower surface 70b of the disk 70 of the atomizer 60 is formed from the outer peripheral end (the tip of the protrusion 75) to the boundary portion between the inner peripheral edge 73 and the concave portion 74.
The guide groove 78 b on the lower surface 70 b of the disk 70 of the atomizer 60 is formed so as to reach the tip of the protrusion 75. The guide groove 78b on the lower surface 70b of the disk 70 of the atomizer 60 is formed so as to be arranged for each of the protrusions 75, 75.
A guide groove 78b on the lower surface 70b of the disk 70 of the atomizer 60 is formed from the tip of each projection 75 toward the center. In other words, the guide grooves 78b on the lower surface 70b of the disk 70 of the atomizer 60 are formed in the radial direction for each of the protrusions 75, 75.
The guide groove 78b on the lower surface 70b of the disk 70 of the atomizer 60 has a shape in which the width gradually increases toward the center as viewed from the bottom.
However, the atomizer 60 may be configured such that the guide groove 78a on the upper surface 70a of the disk 70 and the guide groove 78b on the lower surface 70b are formed in either one.

Since the disk 70 has the guide grooves 78a and 78b as described above, in the atomizer 60, the chemical liquid that has flowed into the gap between the disks 70 and 70 from the central hole 71 side of the disk 70 is guided to each guide groove on the upper surface 70a of the disk 70. 78a, 78a, ... and the guide grooves 78b, 78b, ... on the lower surface 70b to the tips of the projections 75, 75 ... of the disk 70, and the outer peripheral ends of the disks 70 (projections 75, 75 ...). At this time, the flow rate of the chemical solution reaching the tip portions of the projections 75, 75,... Of the disk 70 passes through the guide grooves 78a, 78a,... On the upper surface 70a and the guide grooves 78b, 78b,. By being transmitted, it is made uniform, and the chemical solution spreads uniformly on the outer peripheral edge of the disk 70.
In this manner, in the atomizer 60, the size of the particle size of the chemical liquid discharged to the outside of the disk 70 can be made more uniform by allowing the chemical liquid to spread more uniformly around the outer peripheral end of the disk 70.
Therefore, according to the atomizer 60, the chemical liquid can be more uniformly distributed at a desired position.

Further, in the atomizer 60, as shown in FIG. 6 or FIG. 8, the gap between the discs 70 and 70 is different between the inner peripheral side (the inner peripheral edge 73 side) and the outer peripheral side (the outer peripheral edge 72 side). It is formed to become. Specifically, the atomizer 60 is configured such that the gap X1 between the inner peripheral edges 73 and 73 of the disks 70 and 70 is narrower than the gap Y1 between the outer peripheral edges 72 and 72 (X1 <Y1). . In order to make the gap X1 and the gap Y1 have different intervals (lengths), the inner peripheral edge portion 73 of the disk 70 is formed to be thicker than the outer peripheral edge portion 72. However, in order to make the gap X1 and the gap Y1 have different lengths, the thickness of the disk 70 is made uniform, and the height of the protruding portion 76 is configured to be low on the inside and high on the outside. A spacer having a different height may be interposed between the inner peripheral edge portions 73 and 73 and the outer peripheral edge portions 72 and 72 of the 70, and the means thereof is not limited.
Thus, the disk 70 is formed so that the thickness of the inner peripheral edge portion 73 is larger than the thickness of the outer peripheral edge portion 72, so that in the atomizer 60, between the outer peripheral edge portions 72 and 72 between the disks 70 and 70. Since the gap Y1 is narrow, the flow rate is limited when the chemical solution flows into the gap between the disks 70 and 70 from the central hole 71 side. Further, in the atomizer 60, since the gap X1 between the inner peripheral edge portions 73 and 73 between the disks 70 and 70 is narrow, the flow of the chemical solution flowing into the gap between the disks 70 and 70 is restricted smoothly. The chemical solution can be spread more uniformly over the outer peripheral end of the disk 70.
In this manner, in the atomizer 60, the size of the particle size of the chemical liquid discharged to the outside of the disk 70 can be made more uniform by allowing the chemical liquid to spread more uniformly around the outer peripheral end of the disk 70.
Therefore, according to the atomizer 60, the chemical liquid can be more uniformly distributed at a desired position.

Moreover, the disk 70 of the atomizer 60 can also be formed so that the thickness of the outer peripheral edge 72 is larger than the thickness of the inner peripheral edge 73 as shown in FIG. In other words, the gap between the disks 70 and 70 is configured such that the gap Y2 between the outer peripheral edge portions 72 and 72 is narrower than the gap X2 between the inner peripheral edge portions 73 and 73 (X2> Y2).
When the disks 70, 70,... Of the atomizer 60 configured in this way are arranged so as to overlap as described above, the gap Y2 between the outer peripheral edges 72, 72 is the inner peripheral edge of the gap between the disks 70, 70. It is comprised so that it may become narrow compared with the clearance gap X2 between 73 * 73.
In this way, the disk 70 is formed so that the thickness of the outer peripheral edge 72 is larger than the thickness of the inner peripheral edge 73, so that in the atomizer 60, the outer peripheral edges 72, 72 between the disks 70, 70. Since the gap Y2 between them is narrow, the chemical liquid that has flowed into the gap between the discs 70 and 70 from the central hole 71 side receives a higher pressure in the gap Y2 between the outer peripheral edges 72 and 72 and is discharged from the outer peripheral end to the outside. As a result, the particle size of the chemical solution can be reduced.

Here, in the conventional atomizer, in the chemical solution released to the outside of the outer peripheral end from the gap between the discs 70, 70, it is scattered in the scattering prevention cover and adheres to the inner surface of the scattering prevention cover, Some are sprayed outside and adhere to the outer surface of the anti-scatter cover. When the chemical solution adhering to the outer surface or inner surface of the anti-scattering cover is collected, it drops down from the outer end through the outer surface or inner surface.
In addition, the conventional atomizer scattering prevention cover is arranged so that the outer end of the plurality of disks arranged so as to overlap each other is positioned outside the outer peripheral end of the disk and covers the disk. Be placed.
For this reason, in the conventional anti-scattering cover of the atomizer, the chemical solution that has adhered to the outer surface or the inner surface of the anti-scattering cover will drop to the outside of the atomizer (its disk) without being atomized.
Thus, in the conventional atomizer provided with the anti-scattering cover, there is a problem that the chemical solution attached to the outer surface or the inner surface of the anti-scattering cover cannot be atomized and sprayed.

As shown in FIG. 3 or FIG. 8, the anti-scattering cover 62 of the atomizer 60 is formed so that the lower part of the anti-scattering cover 62 spreads downward. The outer surface and the inner surface at the lower part of the anti-scattering cover 62 are formed so as to be inclined downward as they go outward.
The scattering prevention cover 62 of the atomizer 60 is disposed above the uppermost disk 70 among the plurality of disks 70, 70,. The scattering prevention cover 62 of the atomizer 60 is arranged so that the outer end 62 a is located outside the central hole 71 of the uppermost disc 70 and inside the outer peripheral end of the disc 70.

In this way, the atomizer 60 is arranged such that the anti-scattering cover 62 is located outside the central hole 71 formed in the center of the disk 70 and inside the outer peripheral end of the disk 70 with its outer end 62a positioned. The chemical liquid dropped from the outer end 62a through the outer or inner surface of the anti-scattering cover 62 falls on the uppermost disk 70 and is discharged to the outside of the outer peripheral end of the disk 70 by centrifugal force. It becomes.
Therefore, according to the atomizer 60, the chemical solution can be reliably sprayed with a simple structure by preventing the chemical solution adhering to the outer surface or the inner surface of the scattering prevention cover 62 from being collected and dripping out of the atomizer 60.

Further, as shown in FIG. 3 or FIG. 8, the outer end 62a of the scattering prevention cover 62 of the atomizer 60 is disposed in the recess 74 in the uppermost disk 70.
In the atomizer 60 including the anti-scattering cover 62 configured as described above, the chemical liquid dropped from the outer end 62a of the outer surface or the inner surface of the anti-scattering cover 62 falls on the concave portion 74 of the uppermost disk 70. Then, it is discharged to the outside of the outer peripheral end of the disk 70 by centrifugal force and atomized.
Therefore, according to the atomizer 60, it is possible to more reliably prevent the chemical solution attached to the outer surface or the inner surface of the anti-scattering cover 62 from collecting and dripping out of the atomizer 60 with a simple structure, and to spray the chemical solution reliably. Can do.

Further, the scattering prevention cover 62 of the atomizer 60 has an inner wall 62b as shown in FIG. 3 or FIG.
The inner wall 62b of the anti-scattering cover 62 of the atomizer 60 is formed so as to protrude downward from the inner surface of the anti-scattering cover 62 and is disposed inside the anti-scattering cover 62 (inside of the outer end 62a).
The inner wall 62b of the anti-scattering cover 62 of the atomizer 60 is arranged so that its lower end is located in the central hole 71 in the uppermost disk 70. The inner wall 62 b of the anti-scattering cover 62 is arranged so that the lower end portion thereof is positioned in the vicinity of the inner peripheral surface of the central hole 71 in the uppermost disk 70.

Since the scattering prevention cover 62 has the inner wall 62b in this way, in the atomizer 60, the chemical liquid scattered from the upper surface 70a of the disk 70 disposed at the uppermost position toward the drive shaft 63 is contained in the central hole 71 in the disk 70. It will adhere to the inner wall 62b of the anti-scattering cover 62 in the vicinity of the peripheral surface. When the chemical solution adhering to the inner wall 62b of the anti-scattering cover 62 is collected, it drops from the inner wall 62b and falls on the uppermost disk 70 or the central hole 71 of the disk 70, so that the disks 70, 70. It is discharged to the outside of the outer peripheral end of the disk 70 by the centrifugal force caused by the rotation and atomized.
Therefore, according to the atomizer 60, the chemical liquid scattered from the disk 70 toward the drive shaft 63 can be reliably sprayed.

DESCRIPTION OF SYMBOLS 1 Unmanned helicopter 5 Chemical solution spraying device 60 Atomizer 62 Spattering prevention cover 70 Disk 70a Upper surface 70b Lower surface 71 Center hole 72 Outer peripheral edge 73 Inner peripheral edge 74 Recess 75 Projection 78a Guide groove 78b Guide groove

Claims (4)

A plurality of donut-shaped discs are arranged so that gaps are formed between the discs, respectively, and when the discs rotate, the chemical solution that has flowed into the gaps between the discs by centrifugal force is added to the discs. An atomizer that discharges from the outer peripheral edge of the
The disk has a plurality of protrusions on the outer peripheral end of the disk, and is formed on the upper surface or the lower surface of the disk so as to reach the tip of the protrusion from the center side of the disk toward the outer peripheral end side of the disk. Atomizer with multiple guide grooves.   The atomizer according to claim 1, wherein the gaps between the disks are formed to have different intervals on the inner peripheral side and the outer peripheral side.   An anti-scattering cover disposed above the plurality of disks and disposed outside the central hole formed in the center of the disk and outside the outer peripheral edge of the disk. The atomizer of Claim 1 or Claim 2 which has.   An unmanned helicopter comprising the atomizer according to any one of claims 1 to 3.

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