KR20170019005A

KR20170019005A - Fan Generating Higher Air Flow

Info

Publication number: KR20170019005A
Application number: KR1020150112466A
Authority: KR
Inventors: 정성길; 조학준
Original assignee: 정성길; 조학준
Priority date: 2015-08-10
Filing date: 2015-08-10
Publication date: 2017-02-21

Abstract

Wherein the blade has a main wing portion arranged in an elastic flat shape on the upper side of the handle portion and a main wing portion extending from an upper end of the main wing portion to the main wing portion, The main wing portion and the auxiliary wing can be manufactured so as to have a cross-sectional shape similar to that of the airfoil by providing a configuration including the auxiliary wings extending to one side of the plane passing therethrough, so that the amount of air generated at the time of fan-

Description

Fan Generating Higher Air Flow < RTI ID = 0.0 >

The present invention relates to a fan having a high air flow rate, and more particularly, to a fan having a high air flow rate, which is provided with an auxiliary blade to significantly increase the amount of air generated during fanfolding, It is about debt with air volume.

In general, a fan is a generic term that refers to a device that generates wind by hand, and includes a rigid fan or a screen fan with a wing portion fixed to the rod-shaped handle portion, , A folding fan of a fan that can be folded and rolled by attaching a fan wing to a radially arranged fan, or a folding fan of a hinged fan.

Such a debt can be used for various purposes such as to cool wind with a small power, to cover the face from the sun and to avoid other pests, and has been widely used from the past. In recent years, Such as 'a debt with a scratch', has been developed and supplied to users.

However, the conventional fan has a plate-like blade. When the fan is bent, the blade is bent by the resistance of the air as shown in Fig. 1, Is not enough.

Particularly, in the case of a single wire or a circular wire which can not be folded, the size of the wire is limited due to the problem of carrying and storing the fan. As a result, the area of the wing portion becomes smaller, .

Korean Utility Model Publication No. 20-1998-015499 (published on June 25, 1998)

On the other hand, Patent Document 1 proposes a fan which can be used as a fan by forming a backscratch on the end portion of the handle of a generally used fan, and to easily scrape a back portion which is not easily accessible when necessary, There is a disadvantage in that it is difficult to grasp the wing portion stably by the hand and it is not easy to operate by hand due to the elasticity of the wing portion when the back is scratched.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the drawbacks of the conventional fans as described above, and it is an object of the present invention to provide an air conditioner which has an auxiliary blade and significantly increases air volume generated during fanfolding, , And a fan having a high air volume.

According to an aspect of the present invention, there is provided a fan having a blade portion for generating a wind and a handle portion for supporting the blade portion, the blade portion having a main blade having a resilient flat shape disposed above the handle portion, And an auxiliary blade extending from the upper end of the main wing portion so as to be bent to one side of a plane passing through the main wing portion.

The wing portion may further include a main wing end portion extending from a top end of the main wing portion on a plane passing the main wing portion.

The wing portion may further include at least one support rib provided between the main wing end and the auxiliary wing.

The auxiliary wing may be convex toward a plane passing the main wing portion in a direction away from the handle portion.

Here, the auxiliary blade may have a curvature increased and a radius of curvature decreased toward the direction away from the handle.

Here, the auxiliary blade may be provided with a plurality of scratch bars, for example, a scraper.

Here, the auxiliary blade may have a backscratcher, and the backscratcher may include a plurality of protrusions that protrude radially outward from the outer edge of the auxiliary vane or that protrude laterally have.

Here, the auxiliary blade may include a scratch plate having a scratch portion protruding sideways.

The fan having a high air flow rate according to the present invention is a fan having a blade portion for generating a wind and a handle portion for supporting the blade portion. The blade portion has a main blade, which is arranged in an elastic flat shape on the upper side of the handle portion, And a pair of auxiliary blades that are split from both ends of a plane passing the main wing portion from an upper end of the main wing portion, wherein the pair of auxiliary blades are bent to the left and right sides of the plane passing the main wing portion .

The wing portion may further include at least one support rib provided between the pair of auxiliary wings.

Here, each of the pair of auxiliary wings may be convex toward a plane passing the main wing portion in a direction away from the handle portion.

Here, each of the pair of auxiliary blades is characterized in that the curvature increases and the radius of curvature decreases toward the direction away from the handle.

At least one of the pair of auxiliary blades may be provided with a plurality of scratch bars and the like.

At least one of the pair of auxiliary blades is provided with a backscratcher, and the backscratcher includes a plurality of protrusions formed to protrude radially outward from the outer edge of the auxiliary vane or to protrude laterally And the like.

At least one of the pair of auxiliary blades is provided with a scratch plate having a scratch portion protruding sideways.

Here, the face of the pair of auxiliary wings facing each other may have a pattern similar to that of a human's lips.

According to the fan having a high airflow amount according to the present invention, the main wing portion and the auxiliary wing have a cross-sectional shape similar to that of the airfoil, or the main wing portion and the pair of auxiliary wings are manufactured to have a cross-sectional shape similar to an airfoil So that the effect of significantly increasing the amount of air generated at the time of fan shooting can be obtained.

Further, the auxiliary blade is provided with a backscratch so that the backscratcher protrudes to one side of the plane through which the main wing portion passes. Thus, the effect that the relatively concave backscratch can be easily scratched by itself can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a wing portion bent when a conventional fan is struck;
Fig. 2 is a side view showing one embodiment of a high airflow fan according to the present invention in which the wing portion includes a main wing portion and a secondary wing; Fig.
3 is a side view showing an embodiment in which the main wing portion and the auxiliary wing of Fig. 2 are formed to have a cross-sectional shape similar to that of the airfoil,
FIG. 4 is a perspective view showing an embodiment in which a scraper is provided with a plurality of scratch bars in a part of the auxiliary blade in FIG. 2;
FIG. 5 is a perspective view illustrating an embodiment in which the backscratcher is formed in the auxiliary blade in FIG. 2 and includes a plurality of protrusions protruding from the outer edge of the auxiliary blade,
FIG. 6 is a perspective view showing an embodiment in which a backing plate provided with a scratch portion protruding laterally from an auxiliary blade is provided in FIG. 2;
FIG. 7 is a side view showing one embodiment of a high airflow fan according to the present invention in which the wing portion includes a main wing portion, a main wing end portion and an auxiliary wing;
8 is a side view showing an embodiment in which the main wing portion and the auxiliary wing of Fig. 7 are formed to have a cross-sectional shape similar to that of the airfoil,
FIG. 9 is a perspective view showing an embodiment in which a scraper is provided with a plurality of scratch bars in the entire area of the auxiliary blade in FIG. 7;
FIG. 10 is a perspective view showing an embodiment in which a scraper is provided with a plurality of scratch bars in a part of the auxiliary blade in FIG. 7;
FIG. 11 is a perspective view illustrating an embodiment in which a backscratch is formed in the auxiliary vane in FIG. 7 including a plurality of protrusions protruding from the outer edge of the auxiliary vane;
FIG. 12 is a perspective view showing an embodiment in which a backing plate having a scratch portion protruding laterally from the auxiliary blade is provided in FIG. 7;
Fig. 13 is a side view showing one embodiment of a high airflow fan according to the present invention in which a wing portion includes a main wing portion and a pair of auxiliary wings; Fig.
Fig. 14 is a side view showing an embodiment in which the main wing portion and the pair of auxiliary wings of Fig. 13 are formed to have a cross-sectional shape similar to that of an airfoil abutted against each other;
FIG. 15 is a perspective view showing an embodiment in which a scraper is provided with a plurality of scratch bars in any one of the pair of auxiliary blades in FIG. 13;
FIG. 16 is a perspective view showing an embodiment in which a backscratch is formed in any one of the pair of auxiliary blades in FIG. 13, including a plurality of protrusions protruding from the outer edge of the auxiliary blade;
FIG. 17 is a perspective view showing an embodiment in which a backing plate having a scratch portion protruding laterally from any one of the pair of auxiliary blades is provided in FIG. 13;
Fig. 18 is a perspective view showing a state in which a pair of auxiliary wings are formed on the surface facing each other with a human-like lips-like pattern in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the present invention is not limited to the embodiments.

Hereinafter, a configuration of a fan having a high airflow amount according to an embodiment of the present invention will be described.

Fig. 2 is a side view showing one embodiment of a fan having a high airflow volume according to the present invention in which the main wing portion and the auxiliary wing are included in the wing portion, Fig. 3 is a side view showing the main wing portion and the auxiliary wing in Fig. FIG. 4 is a perspective view showing an embodiment in which a scraper is provided with a plurality of scratch bars in a part of the auxiliary blade in FIG. 2, and FIG. 5 is a perspective view FIG. 6 is a perspective view showing an embodiment in which a scratch portion protruding laterally from an auxiliary blade is formed in the auxiliary blade, and FIG. 6 is a cross- FIG. 2 is a perspective view showing an embodiment in which a backing plate is provided.

In the present embodiment, the fan having a high airflow volume according to the present invention is a fan having a wind-generating wing portion 10 and a handle portion 20 for supporting the wing portion 10. The wing portion 10 is a fan And comprises a wing portion (11) and an auxiliary wing (15).

The main wing portion 11 is a portion disposed on the upper side of the grip portion 20 in an elastic planar shape and may be formed of a single material or may be formed by joining layers of a single material or a composite material, Or a flat material may be adhered or fused to the ribs of the flesh or synthetic resin material.

When the main wing portion 11 is formed by adhering or welding a flat material to the ribs, a plain paper, a nonwoven fabric, a silk fabric, or the like may be used, or a flat synthetic resin may be used.

When the main wing portion 11 is formed of a single material or is formed by joining layers of a single material or a composite material, the main wing portion 11 may be formed of polycarbonate (PC), polyvinyl chloride (PVC) And a synthetic resin such as polypropylene (PP).

The auxiliary wing 15 is a portion extending from the upper end of the main wing portion 11 to one side of the plane passing the main wing portion 11 and extending from one side of the main wing portion 11 as shown in Fig. Or may be formed in a plane shape having a straight section that is bent and extended at a predetermined angle, or may be formed in a shape having an airfoil section in which the angle of bending from one side of the main wing section 11 is gradually increased as shown in Fig. .

The auxiliary wing 15 is not referred to as an 'auxiliary wing' because it is an auxiliary function of generating the wind, but is called 'auxiliary wing' because of its shape extending from the main wing portion 11 by bending.

Generally, in a wing for generating wind, the flow velocity of a portion through which air flows out is faster than a portion through which air flows, so that an angle at which a wing breaks at a portion where air flows out is an angle It is possible to efficiently generate wind.

That is, larger winds are generated when the wings of the airfoil are rotated or advanced in the direction of the concave portion of the airfoil than the planar wings.

The main wing portion 11 and the auxiliary wing 15 of the wing portion 10 are formed in a concave shape in the direction in which the auxiliary wing 15 is formed. It is possible to generate a larger air volume than the conventional fan when the fan according to the invention is applied.

Particularly, as shown in FIG. 3, if the main blade portion 11 and the auxiliary blade 15 of the blade portion 10 are formed to have a cross-sectional shape similar to that of the airfoil portion, a large amount of air can be generated very efficiently.

When the main wing portion 11 and the auxiliary wing 15 of the wing portion 10 are formed to have a cross-sectional shape similar to that of the airfoil portion, the auxiliary wing 15 is separated from the upper end portion of the main wing portion 11, The angle at which the curved portion 11 starts to bend toward one side of the plane passing through the center 11 can be almost zero degrees. That is, the main wing portion 11 and the auxiliary wing 15 may be integrally formed to have a streamlined cross-sectional shape.

At this time, the auxiliary vane 15 is formed so as to be convex toward the plane passing the main wing portion 11 in the direction away from the knob portion 20, and the curvature increases toward the direction away from the knob portion 20, The radius is reduced.

The auxiliary wing 15 is preferably bent and extended from the upper end of the main wing 11 so as to have a length corresponding to 1/5 to 1/3 of the total length of the wing 10, But is not limited to. Thus, the auxiliary wing 15 may occupy about half of the entire length of the wing portion 10, and the wing portion 10 may be relatively small from the portion adjoining the wing portion 20 to the wing portion 20 And may be formed to be bent and extended at an angle.

In general, the fan is held by the hand grip 20 with one hand, and when the person flies toward the face, the face is positioned on one side of the plane passing through the main wing 11. Therefore, when the fan of the present embodiment is used, if the fan is held by the fan so that the face is located close to the direction in which the auxiliary vane 15 of the vane 10 is formed, a larger air volume can be generated toward the face.

In this embodiment, the overall shape of the fan having a high airflow volume according to the present invention, having the wing portion 10 including the main wing portion 11 and the auxiliary wing 15, Like wing portion.

The auxiliary blade (15) may be provided with a scraping portion (17a) provided with a plurality of scratching bars.

As shown in Fig. 4, the backscratching portion 17a may include a plurality of scratching bars and a plurality of reinforcing ribs connecting the scratching bars. The reinforcing rib may be formed at a position connecting the ends of the plurality of scrubbing bars or may be formed at a position connecting the middle parts of the plurality of scrubbing bars as shown in FIG.

Here, the end portions of the plurality of scratching bars may be formed to be bent laterally, and protrusions formed to protrude outward in the radial direction from the end portions of the plurality of scratching bars or to protrude laterally from the end portions of the plurality of scratching bars .

5, the backscratcher 17a may include a plurality of protrusions formed to protrude outward in the radial direction from the outer edge of the auxiliary vane 15 or to protrude laterally .

The end portion of the backscratching portion 17a is spaced apart from one side of the plane through which the main wing portion 11 passes. When a person holds the knob portion 20 by hand and scoops the back, The tip end of the scraping portion 17a can be easily contacted, so that the concave portion of the back can be easily scratched by itself.

As shown in Fig. 6, the auxiliary blade 15 may be provided with a backscratch plate 17b instead of the backscratcher 17a.

The back scraping plate 17b is a plate-like member provided with a scraping portion protruding laterally at an end portion thereof. The back scraping plate 17b can be scraped with a scraper, and can be made of synthetic resin, bamboo or the like.

The handle 20 may be made of bamboo, synthetic resin, or the like, which serves to support the wing 10, and may be formed integrally with the wing 10 or formed separately And then joined together.

The grip portion 20 has a rod shape having a predetermined length and may be a round bar having a circular cross section perpendicular to the longitudinal direction or an angled rod such as a triangle, a square, a pentagon, a hexagon, or a rectangular flat bar ) Shape. If necessary, it is possible to increase the frictional force by rougletting the outer surface of the rear end of the handle 20 to give irregularities.

Hereinafter, the configuration of a fan having a high airflow amount according to another embodiment of the present invention will be described.

7 is a side view showing one embodiment of a fan having a high airflow volume according to the present invention in which the wing portion includes a main wing portion, a main wing end portion and an auxiliary wing, Fig. 8 is a side view of the main wing portion and the auxiliary wing portion of Fig. FIG. 9 is a perspective view showing an embodiment in which a scraper is provided with a plurality of scratch bars in the entire area of the auxiliary blade in FIG. 7, and FIG. 9 is a perspective view 10 is a perspective view showing an embodiment in which a scraper is provided with a plurality of scratch bars in a part of the auxiliary wing in FIG. 7, FIG. 11 is a perspective view of the auxiliary wing in FIG. FIG. 12 is a perspective view showing an embodiment in which a backscratch is formed on the auxiliary vane, and FIG. 12 is a perspective view illustrating an example in which the backscratcher is provided with a scratch portion protruding sideways from the auxiliary vane. A.

In the present embodiment, the fan having a high airflow volume according to the present invention is a fan having a wind-generating wing portion 10 and a handle portion 20 for supporting the wing portion 10. The wing portion 10 is a fan Comprises a wing portion (11), a main wing end (12) and an auxiliary wing (15).

The main wing portion 11 is the same as the one described above, so that the description will be omitted.

The main wing end portion 12 extends from the upper end of the main wing portion 11 in a plane passing through the main wing portion 11 and the main wing portion 11 and the main wing end portion 12 are integrally formed And the main wing portion 11 and the main wing end portion 12 have the same shape as a wing portion formed in a resilient planar shape in a general fan.

The auxiliary wing 15 is a portion extending from the upper end of the main wing portion 11 to one side of the plane passing the main wing portion 11 and extending from one side of the main wing portion 11 Or may be formed in a plane shape having a straight section that is bent and extended at a predetermined angle and may be formed in a shape having an airfoil section in which the angle that is bent laterally from one side of the main wing section 11 gradually increases as shown in Fig. .

In this embodiment, the auxiliary wings 15 extend from the upper end of the main wing portion 11 to one side of the plane passing the main wing portion 11 and extend with the main wing end portion 12 while extending.

Especially, as shown in FIG. 8, if the main wing portion 11 and the auxiliary wing 15 of the wing portion 10 are formed to have a cross-sectional shape similar to that of the airfoil, a large amount of air can be generated very efficiently.

In this case, the auxiliary wings 15 are formed to be convex toward the plane passing the main wing portion 11 in the direction away from the knob portion 20, and the curvature increases toward the direction away from the knob portion 20 The radius of curvature is reduced.

At least one support rib 16 is provided between the main blade end 12 and the auxiliary blade 15 to prevent the auxiliary blade 15 from coming into close contact with the main blade end 12 due to the resistance of the air when the fan is applied. May be provided.

7 and 8, the supporting rib 16 is shown as having a planar shape, but the present invention is not limited to this. The supporting rib 16 may have an opening formed at the center of the supporting rib 16, A curved rod shape or the like.

As shown in Figs. 9 and 10, the backscratching portion 17a may include a plurality of scratching bars and a plurality of reinforcing ribs connecting the scratching bars. The reinforcing rib may be formed at a position connecting the ends of the plurality of scrubbing bars as shown in FIG. 9, or may be formed at a position connecting the middle parts of the plurality of scrubbing bars as shown in FIG. 10 It is possible.

11, the backscratcher 17a may include a plurality of protrusions formed to protrude outward in the radial direction from the outer edge of the auxiliary vane 15 or to protrude laterally .

As shown in Fig. 10, the backscratcher 17a provided in the auxiliary vane 15 is generally provided at a part of the area of the auxiliary vane 12 (mainly at the end), but as shown in Figs. 9 and 11 And may be provided in almost the entire area of the auxiliary vane 15 as shown in Fig.

In the latter case, when the backscratching portion 17a is configured as shown in Fig. 9, the effect of increasing the airflow amount of the auxiliary vane is small. However, as shown in Fig. 11, In the case where the outer peripheral portion of the wing 15 is formed of a plurality of projections formed radially outwardly or protruding laterally, the effect of increasing the air volume hardly deteriorates.

As shown in Fig. 12, the auxiliary blade 15 may be provided with a backscratch plate 17b instead of the backscratcher 17a.

Since the grip portion 20 is the same as the one described above, description thereof will be omitted.

Hereinafter, a configuration of a fan having a high airflow amount according to another embodiment of the present invention will be described.

Fig. 13 is a side view showing one embodiment of a fan having a high airflow volume according to the present invention in which a main wing portion and a pair of auxiliary wings are included in the wing portion, Fig. 14 is a side view showing the main wing portion and a pair FIG. 15 is a side view showing an embodiment in which auxiliary wings are formed to have a cross-sectional shape similar to that of an airfoil in contact with each other. FIG. 15 is a side view showing an embodiment in which a plurality of scratch bars are provided in any one of the pair of auxiliary wings in FIG. FIG. 16 is a perspective view showing an embodiment in which a backscratch is formed on one of the pair of auxiliary blades in FIG. 13, including a plurality of protrusions protruding from the outer edge of the auxiliary blade. FIG. FIG. 17 is a perspective view showing an embodiment in which a backing plate having a scratch portion protruding laterally from any one of the pair of auxiliary blades is provided in FIG. 13, FIG. 18 is a perspective view showing a pair of beams Wings are a perspective view showing a state in which a pattern such as the lips of a person formed on the surface facing each other.

In the present embodiment, the fan having a high airflow volume according to the present invention is a fan having a wind-generating wing portion 10 and a handle portion 20 for supporting the wing portion 10. The wing portion 10 is a fan And comprises a wing portion (11) and a pair of auxiliary wings (15).

The pair of auxiliary blades 15 are formed in a shape that is split from the upper end of the main wing portion 11 to the both sides of the plane passing the main wing portion 11. The pair of auxiliary wings 15 are arranged on the left and right sides of the plane passing the main wing portion 11 As shown in Fig. 13, may be formed in a planar shape having a straight-line section extending from the upper end of the main wing portion 11 at both sides thereof at an angle, as shown in Fig. 14, Sectional shape in which the angle of bending from the upper end of the main wing portion 11 to both sides is gradually increased as shown in Fig.

In the present embodiment, the main wing 11 and the pair of auxiliary wings 15 have concave shapes on both sides of the plane passing the main wing 11. In the case of attaching the fan according to the present invention, It is possible to generate a larger amount of air than the fan's.

In particular, as shown in FIG. 14, if the main blade portion 11 and the pair of auxiliary blades 15 are formed to have a cross-sectional shape similar to that of the airfoil abutted to each other, a large airflow can be generated very efficiently.

In this case, each of the pair of blade end portions 15 is formed so as to be convex toward the plane passing the main blade portion 11 in the direction away from the handle portion 20, and as it goes away from the handle portion 20 The curvature is increased and the radius of curvature is reduced.

It is preferable that the pair of auxiliary wings 15 extend from the upper end of the main wing 11 so as to have a length corresponding to 1/5 to 1/3 of the total length of the wing 10, Is not necessarily limited thereto. Therefore, the pair of auxiliary wings 15 may occupy about half of the entire length of the wing portion 10, and at least the pair of wing portions 10 may be separated from the portion where the wing portion 20 is connected And may be formed to be bent and separated at a relatively small angle from an adjacent place.

At least one support rib 16 may be provided between the pair of auxiliary blades 15 to prevent the pair of auxiliary blades 15 from coming into close contact with each other due to the resistance of the air when the fan is attached.

Although the supporting ribs 16 are shown as having a planar shape in FIGS. 13 and 14, the present invention is not limited thereto. The supporting ribs 16 may have openings at the center of the supporting ribs 16, A curved rod shape or the like.

At least one of the pair of auxiliary blades 15 may be provided with a scraping portion 17a having a plurality of scratch bars.

As shown in Fig. 15, the backscratcher 14a may include a plurality of scratching bars and a plurality of reinforcing ribs connecting the scratching bars. The reinforcing rib may be formed at a position connecting the ends of the plurality of scrubbing bars or may be formed at a position connecting the middle parts of the plurality of scrubbing bars as shown in FIG.

Here, the end portions of the plurality of scratching bars may be formed to be laterally bent, and protrusions may be formed so that the ends of the plurality of scratching bars are protruded radially outward, or protrusions are formed laterally protruding from the end portions of the plurality of scratching bars .

16, the backscratching portion 17a includes a plurality of protrusions formed to protrude outward in the radial direction or protrude laterally from at least one outer rim portion of the pair of auxiliary wings 15 .

As shown in Fig. 17, at least one of the pair of auxiliary blades 15 may be provided with a backscratch plate 17b instead of the backscratcher 17a. In addition, one of the pair of auxiliary blades 15 may be provided with a backscratcher 17a, and the other one may be provided with a backscratcher 17b.

Referring to FIG. 18, a pattern similar to that of a human lips can be formed on the surfaces of the pair of auxiliary vanes 15 facing each other. Such a pattern makes it possible to remind an observer of an interesting reminder, so that it has a pleasant feeling, so that it can increase the desire to purchase in design, which can help promote and sell the product.

The fan having a high airflow amount according to the present invention can be manufactured such that the main wing portion and the auxiliary wing have a cross-sectional shape similar to that of the airfoil, or the main wing portion and the pair of auxiliary wings have a cross-sectional shape similar to that of the airfoil , There is an advantage that the amount of air generated at the time of fan-out is remarkably increased.

Further, the auxiliary blade has a backscratch so that the backscratcher protrudes to one side of the plane through which the main wing passes, thereby making it possible to easily scrape the relatively concave back portion alone.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Accordingly, such modifications or changes should be construed as being included within the scope of the present invention.

10: wing portion
11: main wing part 12: main wing end
15: Auxiliary blade 16: Support rib
17a: backscratcher 17b: scraping plate
20: Handle portion

Claims

A fan having a blade portion for generating wind and a handle portion for supporting the blade portion,
Wherein the wing portion includes a main wing portion arranged in an elastic flat shape on the upper side of the handle portion and an auxiliary wing extending from the upper end of the main wing portion to one side of a plane passing through the main wing portion , High-volume debt.

The method according to claim 1,
Characterized in that the wing further comprises a main wing end extending from a top end of the main wing portion onto a plane passing the main wing portion.

3. The method of claim 2,
Characterized in that the wing further comprises a supporting rib provided at least one between the main wing end and the auxiliary wing.

The method according to claim 1,
Wherein the auxiliary blade is formed so as to be convex toward a plane passing the main blade portion in a direction away from the handle portion.

5. The method of claim 4,
Wherein the auxiliary blade has a curvature increasing and a curvature radius decreasing in a direction away from the handle.

6. The method according to any one of claims 1 to 5,
Characterized in that the auxiliary vane is provided with a scraper such as a plurality of scratch bars.

6. The method according to any one of claims 1 to 5,
The auxiliary blade is provided with a backscratcher,
Wherein the backscratcher comprises a plurality of protrusions formed to protrude in a radially outward direction on the outer rim portion of the auxiliary wing or to protrude laterally.

6. The method according to any one of claims 1 to 5,
Characterized in that the auxiliary blade is provided with a scraping plate provided with a scraping portion protruding sideways.

A fan having a blade portion for generating wind and a handle portion for supporting the blade portion,
Wherein the wing portion includes a main wing portion arranged in an elastic flat shape on the upper side of the handle portion and a pair of auxiliary wings separated from both ends of a plane passing the main wing portion from an upper end portion of the main wing portion,
And the pair of auxiliary blades bend and expand to the left and right sides of a plane passing through the main wing portion, respectively.

10. The method of claim 9,
Characterized in that the wing further comprises a supporting rib provided at least one between the pair of auxiliary wings.

10. The method of claim 9,
Wherein each of the pair of auxiliary blades is formed so as to be convex toward a plane passing the main blade portion in a direction away from the handle portion.

12. The method of claim 11,
Characterized in that each of said pair of auxiliary blades has a curvature increased and a radius of curvature reduced in a direction away from said handle portion.

13. The method according to any one of claims 9 to 12,
Characterized in that at least one of the pair of auxiliary blades is provided with a scratching portion provided with a plurality of scratching bars.

13. The method according to any one of claims 9 to 12,
At least one of the pair of auxiliary blades is provided with a backscratcher,
Wherein the backscratcher comprises a plurality of protrusions formed to protrude in a radially outward direction on the outer rim portion of the auxiliary wing or to protrude laterally.

13. The method according to any one of claims 9 to 12,
Characterized in that at least one of the pair of auxiliary blades is provided with a scratch plate provided with a scratch portion protruding sideways.

13. The method according to any one of claims 9 to 12,
Wherein a surface of the pair of auxiliary blades facing each other is formed with a human-like lips-like pattern.