KR101167635B1

KR101167635B1 - Electric fan

Info

Publication number: KR101167635B1
Application number: KR20100052698A
Authority: KR
Inventors: 허종목
Original assignee: 허종목
Priority date: 2010-02-17
Filing date: 2010-06-04
Publication date: 2012-07-25
Also published as: KR20110095099A

Abstract

The present invention relates to an electric fan, including an air generating unit (20) which is coupled to a rotating shaft (11) of the motor (10) and rotates, and a protective cover (30) covering the outside of the air generating unit (20). In the fan is configured to, the air generating unit 20, the through-hole 21a is formed in the center so that the rotary shaft 11 penetrates, the front curved plate 21 rounded forward toward the edge; The rear surface of the front curved plate 21 is spaced apart at a predetermined interval and the through-hole 22a is formed to allow the outside air to be sucked at the same time the rotary shaft 11 penetrates in the center is rounded forward toward the edge and the edge is A rear curved plate 22 spaced apart from the edge of the front curved plate 21 by a predetermined distance; And a plurality of blades 23 disposed between the front and rear curved plates 21 and 22 and spaced apart at equal intervals along their circumferential direction, respectively.
Therefore, it is possible to form a three-dimensional three-dimensional wind air flow close to the nature that seems to be blowing in the forest around the fan as a whole, so that users can feel cool without being rejected by the wind to improve the reliability and preference of the product. In addition, by concealing the blade between the front and rear curved plate, it is possible to prevent safety accidents such as injury caused by the blade in advance.

Description

Electric fan {Electric fan}

The present invention relates to a fan, and more particularly, an air generating part of a concave disc structure in which blades are disposed between front and rear curved plates, and the air is discharged from the edge of the air generating part by the high speed rotation of the air generating part. By forming a cyclone with a whirlwind, and by forming a circulatory air that sucks the air in front of the fan by the low pressure generated in the whirlwind, a three-dimensional three-dimensional wind air close to nature as if blowing in the forest around the fan as a whole. The flow can be formed to allow the user to feel cool without being rejected by the wind, thereby improving the reliability and preference of the product, and also concealing the blade between the front and rear curved plates, thereby causing injury to the blade. Safety accidents such as occurrence can be prevented in advance. It's about a fan that gets turned on.

In general, a fan refers to a device that generates wind as a plurality of blades rotates as the blades of the motor are coupled to a rotating shaft of the motor to drive the motor.

The main part of the fan structure is a screw-shaped wing (usually 3-4 pieces), a stand part equipped with a control switch such as wind speed and head rotation time, a support part having a height control device, and a direction. It consists of the left and right, the neck part to change up and down, the electric motor part containing the device to rotate the wing, and the guard to protect the wing back and forth.

The reason why the user feels cool by such a fan is that the discharged air discharged from the rotating blades comes into contact with the skin and thus evaporates sweat or other secretions from the skin, thereby dissipating it as heat of vaporization.

However, since the fan of the prior art is supplied with the air by the direct discharge method from the blade rotated axially, the direct discharge air is often caused by the rejection, and also, due to the direct fan wind, hypothermia, difficulty breathing, etc. There was a problem that might appear,

In addition, since the wire mesh wraps around the axial type wing, children have a problem of a safety accident, such as children are put in a finger by the wing that is axially rotated to cause injury.

The present invention has been made to solve the problems of the prior art, the air is formed in the concave disk structure in which the blade is disposed between the front, rear curved plate to form the air by the high speed rotation of the air generating portion of the edge of the air generating portion By discharging from the whirlwind, a whirlwind with vortex is formed, and a low-pressure pressure in the whirlwind creates a circulatory air that sucks the air in front of the fan, making it almost three-dimensional in nature like blowing in the forest around the fan. The air flow of the three-dimensional wind can be formed to allow the user to feel cool without being rejected by the wind, thereby improving reliability and preference for the product, and also by concealing the blade between the front and rear curved plates, Safety accidents such as blade injury The purpose is to provide a fan that can be prevented in advance.

In the fan of the present invention for achieving the above object is a fan comprising an air generating portion coupled to the rotary shaft of the motor shaft rotation, and a protective cover surrounding the outside of the air generating portion, the air generating unit, A front curved plate is formed in the center so that the rotating shaft penetrates and rounded forward toward the edge; The rear surface of the front curved plate is disposed at regular intervals and the through-hole is formed so that the outside air is sucked at the same time the rotation axis is penetrated in the center is rounded forward toward the border and the border is spaced apart from the border of the front curved plate Rear curved plate; And a plurality of blades disposed between the front and rear curved plates and spaced at equal intervals along the circumferential direction thereof.

In addition, in the fan according to the present invention, the blade is a bent plate structure having the same curvature so that the line, the rear end abuts to the front, rear curved plate and is bonded between the front, rear curved plate, The portion extending toward the center through hole of the rear curved plate becomes a wide air intake part in front and rear width, and the portion extending toward the edge becomes an air discharge portion having a narrow front and back width through the air intake part in the center through hole of the rear curved plate. It is preferable that air flows to the air discharge part of the edge.

In addition, in the fan according to the present invention, the blade may be configured to extend in the radial direction of the front, rear curved plate and disposed perpendicular to the previous, rear curved plate.

In addition, in the fan according to the present invention, the blade has a structure in which the air discharge portion is inclined at a predetermined angle in the circumferential direction, the air suction portion may be formed to be alternately different in length along the circumferential direction.

In addition, in the fan according to the present invention, the blade is protruded by a predetermined length in the rear through the through hole of the rear curved plate from the rear end of the air suction portion and at the same time the inclined protrusion portion which is inclined at an angle along the circumferential direction is further provided. You may.

In addition, in the fan according to the present invention, the blade may be arranged at right angles to the front, rear curved plate, but may have a structure in which the air discharge portion is inclined at a predetermined angle in the circumferential direction with respect to the air suction portion.

The fan of the present invention includes an air generating unit coupled to a rotating shaft of the motor to rotate the shaft, and a protective cover covering the outside of the air generating unit, wherein the air generating unit is configured to penetrate the rotating shaft. Through-holes are formed in the center and the front curved plate rounded forward toward the edge; And a plurality of blades bonded to the rear surface of the front curved plate and spaced apart at equal intervals, respectively, in the circumferential direction, wherein the protective cover is disposed at a predetermined interval behind the front curved plate and the rotation shaft penetrates at the center thereof. At the same time a through-hole is formed so that the outside air is sucked and the rear cover is rounded forward toward the edge and the edge is spaced apart from the edge of the front curved plate by a predetermined distance; And a front cover bonded to the front edge of the rear cover to cover the air generating unit.

In addition, in the fan according to the present invention, the blade has a bending plate structure having the same curvature so that the front end portion is in contact with the front curved plate, the portion extending toward the center through-hole side of the rear cover has a front and rear width The wide air suction portion, and the portion extending toward the edge portion is a narrow air discharge portion in the front and rear width, it is preferable that the air flows from the central through hole of the rear cover to the air discharge portion of the edge through the air suction portion.

In addition, in the fan according to the present invention, it is preferable that the blade is configured to extend along the radial direction of the front curved plate and disposed perpendicular to the front curved plate.

As described above, the fan according to the present invention forms an air generating part of a concave disc structure in which blades are disposed between the front and rear curved plates, and the air is discharged from the edge of the air generating part by the high speed rotation of the air generating part, thereby having a vortex. By forming the vortex air and the low pressure generated in the vortex air, the circulatory air that draws the air in front of it to the fan side creates an air flow of three-dimensional solid wind that is almost like nature blowing in the forest around the fan as a whole. It can be formed so that the user can feel cool without objection to the wind, thereby improving the reliability and preference of the product, and also concealing the blade between the front and rear curved plates, causing injuries caused by the blade, etc. To prevent accidents Gets the effect.

1 is a perspective view showing a fan according to an embodiment of the present invention.
2 is an exploded perspective view showing a fan according to an embodiment of the present invention.
Figure 3 is a front perspective view showing an air generating unit of the fan according to an embodiment of the present invention.
Figure 4 is a rear perspective view showing an air generating unit of the fan according to an embodiment of the present invention.
5 is a schematic cross-sectional view showing an air generating unit of the fan according to an embodiment of the present invention.
6 is a flow diagram schematically showing the air flow formed through the air generator of the fan according to an embodiment of the present invention.
7 is an actual picture showing the air flow around by the air flow formed through the air generator of the fan according to an embodiment of the present invention.
8 is a main portion perspective view showing another embodiment of the blade of the fan according to an embodiment of the present invention.
9 is a perspective view showing another embodiment of a blade of the fan according to an embodiment of the present invention.
10 is a rear perspective view of FIG. 9.
11 is a perspective view showing another embodiment of a blade of the fan according to an embodiment of the present invention.
12 is a perspective view showing a fan according to another embodiment of the present invention.
13 is an exploded perspective view showing a fan according to another embodiment of the present invention.
14 is a front perspective view showing an air generating unit of the fan according to another embodiment of the present invention.
15 is a rear perspective view showing the air generating unit of the fan according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 to 7, the fan according to the embodiment of the present invention is coupled to the rotary shaft 11 of the motor 10, the air generating unit 20 and the shaft rotation, the air generating unit 20 It comprises a protective cover 30 to cover the outside of the, the air generating unit 20, the through-hole 21a is formed in the center so that the rotating shaft 11 penetrates and rounded forward toward the border The front curved plate 21 and a through hole 22a are formed at a predetermined interval behind the front curved plate 21 and the rotating shaft 11 penetrates at the same time and allows the outside air to be sucked in the center. It is gradually rounded forward and its edge is disposed between the rear curved plate 22 and the front and rear curved plates 21 and 22 spaced apart from the edge of the front curved plate 21 by a predetermined distance and along the circumferential direction thereof. A plurality of blades 23 each spaced at equal intervals; Is composed.

The blade 23 has a bent plate structure having the same curvature so that the line and the rear end thereof are in contact with the front and rear curved plates 21 and 22 while being disposed between the front and rear curved plates 21 and 22. The portion extending toward the center through hole 22a of the rear curved plate 22 becomes an air suction portion 23a having a wide front and rear width, and the portion extending toward the rim side has an air discharge portion 23b having a narrow front and rear width. ), The air flows from the central through hole (22a) of the rear curved plate (22) to the air discharge portion (23b) of the rim through the air suction portion (23a).

Here, the blade 23 extends along the radial direction of the front and rear curved plates 21 and 22 and is disposed perpendicular to the front and rear curved plates 21 and 22.

Due to this structure, the blade 23 of the present invention is sucked into the low-pressure blade 23 in which the high-pressure external air is rotated at high speed by the air pressure difference formed according to the high-speed rotation, even in the blade 23 itself wide width A centrifugal force is generated from the air intake portion 23a located at the center of the air generator 23 to the air discharge portion 23b located at the outside of the rim, and consequently, the external air flows into the air intake portion 23a. It is sucked in and flows toward the air discharge portion 23b, and the air discharge portion 23b narrows the discharge port and discharges high-speed air, and at the same time, the air flow in the centrifugal direction and the rotational direction due to the high-speed rotation of the blade 23 are discharged. As the airflow is compounded, vortices are generated due to a sudden change of airflow, and inside the cyclone compound airflow formed by the vortex, a low pressure space (that is, An air discharge portion becomes the low pressure condition of air sucked into the entering (23b)) which will be finally formed in the sucking air flow circulating the atmospheric air side of the front blade (23) as formed.

On the other hand, as another embodiment of the blade of the present invention, as shown in Figure 8, the blade 24 has a structure in which the air discharge portion 24a is inclined at a predetermined angle in the circumferential direction, the air suction portion 24b, 24c) may be formed to have different lengths alternately along the circumferential direction.

By doing so, it is possible to reduce the rotational force of the vortex and instead increase the straightness to weaken the strength of the circulation airflow so that the wind of the fan can be transmitted farther forward.

In addition, as another embodiment of the blade of the present invention, as shown in Figs. 9 and 10, the blade 25 is the through hole of the rear curved plate 22 at the rear end of the air suction (25a) ( 22a) may be further provided with an inclined protrusion part 25b which protrudes a predetermined length rearward and is inclined at an angle along the circumferential direction.

In this way, when the suction force is increased by the rearward inclined protrusion 25b, the discharge pressure is also increased, so that the size of the whirlwind is increased, thereby forming a circulation airflow that sucks even the air in the far part in the front.

And, as another embodiment of the blade of the present invention, as shown in Figure 11, the blade 26 is disposed at right angles to the front, rear curved plate (21, 22) with respect to the air intake (26a) The air discharge portion 26b may be inclined at a predetermined angle in the circumferential direction.

As described above, through the deformation of the blades of various embodiments, it is possible to manufacture a fan suitable for the purpose by adjusting the correlation of the output, the air volume, the wind speed, the noise, and the like of the motor.

That is, the smaller the size of the air discharge portion 26b, the higher the rotation speed of the air generating portion 20, the lower the pressure, the faster the wind speed, the higher the noise, and the curvature of bending the front of the blade 23 The larger the efficiency is, the better it is to have a suitable curvature in consideration of the height of the blade (23).

In addition, the function of the air discharging unit 26b may vary depending on the degree of spreading. For example, when the spreading angle of the air discharging unit 26b is increased, the vortex vortex opening angle increases. The circulation airflow in the center portion (the force for sucking the air in the direction of the fan) is weakened, so that an air film by vortex can be formed around the vicinity of the fan, and conversely, when the opening angle is reduced, the air generating unit 20 As the diameter of the whirlwind decreases, the suction force in the center increases, and the backflow from the front toward the fan increases, resulting in a cool feeling from a distance.

Reference numeral 11a denotes a locking pin for stopping the air generator 20 is inserted after the predetermined distance to the rear of the rotary shaft 11, 12 is the front through the through hole (21a) of the front curved plate 21 By fastening to the rotating shaft 11 protrudes to the fastener to the air generating unit 20 is fixed to the rotating shaft 11 integrally.

On the other hand, as another embodiment of the fan according to the present invention, as shown in Figure 12 to 15, the fan of the present invention is coupled to the rotary shaft 41 of the motor 40 and the air generating unit 50 that is rotated shaft In the fan configured to include a protective cover 60 covering the outside of the air generating unit 50, the air generating unit 50, the through hole is formed in the center so that the rotating shaft 41 passes through And a plurality of blades 52 bonded to the rear surface of the front curved plate 51 and the front curved plate 51 rounded toward the edge and spaced apart at equal intervals along the circumferential direction, respectively, and the protective cover. 60 is disposed at a predetermined interval behind the front curved plate 51 and a through hole 61a is formed in the center to allow the outside air to be sucked at the same time as the rotating shaft 41 penetrates and is moved forward toward the rim. Getting round that border Including a rear cover 61 spaced apart from the rim of the front curved plate 51 and the front edge of the rear cover 61 and the front cover 62 to cover the air generating unit 50 It is composed.

In addition, the blade 52 has a bending plate structure having the same curvature so that its front end portion abuts against the front curved plate 51 and extends toward the center through hole 61a of the rear cover 61. Is the air intake portion 52a having a wider front and back width, and the portion extending toward the edge portion is the air discharge portion 52b having a narrow front and back width, and the air intake portion (a) is formed at the through hole 61a of the rear cover 61. Air flows through the air discharge part 52b of the edge via 52a).

The blade 52 extends along the radial direction of the front curved plate 51 and is disposed perpendicular to the front curved plate 51.

Looking at the air flow forming process of the fan according to an embodiment of the present invention according to such a configuration, first rotating the rotary shaft 11 by operating the motor 10, the air generating unit 20 is integrally coupled to the rotary shaft 11 Will rotate.

At this time, the blade 23 is sucked into the low-pressure blade 23 in which the high-pressure external air is rotated at high speed by the pressure difference formed according to the high speed rotation, the blade 23 itself has a wide width and is located in the center Centrifugal force is generated from the air suction part 23a to the air discharge part 23b located at the outside while having a narrow width, and as a result, the external air is sucked into the air suction part 23a and flows in the direction of the air discharge part 23b. .

Then, in the air discharge portion 23b, the air is discharged at high speed by the centrifugal force and the rapidly narrowing discharge port, and at the same time, the air flow in the centrifugal direction is rotated by the high speed rotation of the blade 23 to add the rotational force to form a vortex. As a result, the whirlwind generated by the change of the airflow forms a whirlwind which rotates at a high speed forward.

In addition, the vortex-shaped complex airflow formed by the vortex rotates and the pressure is rapidly lowered as the speed of the discharged air increases, and the air is discharged forward with the amplification effect of the so-called air volume that attracts the surrounding air and blows it out together. At this time, in the center of the whirlwind, all four sides of the air are sucked by the vortex, and a cylindrical low pressure space is created to create a so-called circulating air stream that sucks the front air.

In this way, by blowing the whirlwind at the edge of the air generating unit 20 of the fan and sucking the wind in front of the center to circulate the wind, it is possible to create an effect that the wind blows from all directions.

And, by changing some of the structure in this basic structure, for example, to increase the opening angle of the air discharge portion (23b), the circulating air in the center is weakened and the opening angle of the vortex increases, forming an air film due to the vortex to mosquitoes, It is possible to obtain the function of a sleeping fan of the infant, which serves as a mosquito net by preventing insects such as flies, and when the opening angle is reduced, the air flow in the center is reduced and the air is sucked in from afar. The bookshelf does not fly so that only the air around it can function as a student fan to study.

In addition, by forming a torsion angle in the air discharge portion 24a of the blade 24, the rotational force of the vortex can be reduced and the straightness can be increased, thereby reducing the circulating air flow and allowing the fan wind to be transmitted farther. have.

In addition, by forming the inclined protrusion 25b on the blade 25, the amount of intake air is increased, and the flow rate of the discharged air is increased, thereby allowing the discharged air to reach far, thereby forming a long passage distance of the circulated air. It has the function of sucking and circulating air far away.

As described above, the present invention forms an air generating part of a concave disc structure in which blades are disposed between the front and rear curved plates, and a whirlwind flow having vortex is formed while the air is discharged from the edge of the air generating part by the high-speed rotation of the air generating part. At the same time, the low pressure generated in the whirlwind creates a circulating air stream that sucks the air in front of the fan, thereby creating a three-dimensional, three-dimensional three-dimensional wind air flow around the fan as if blowing in the forest. As a result, the user can feel the coolness without objection to the wind to improve the reliability and preference of the product. Also, by concealing the blade between the front and rear curved plates, safety accidents such as injuries caused by the blade can be prevented. It can be prevented in advance.

As described above, the preferred embodiment of the present invention has been described, but the present invention is not limited thereto, and the present invention is not limited to the present invention, and various modifications can be made within the scope of the appended drawings and the detailed description for carrying out the invention. It is obvious that this is possible and also within the scope of the present invention.

10 motor 11 rotation shaft
11a: locking pin 12: fastener
20: air generating unit 21: front curved plate
21a: through hole 22: rear curved plate
22a: through hole 23: blade
23a: air suction part 23b: air discharge part
24: blade 24a: air discharge portion
24b, 24c: air intake 25: blade
25a: air intake 26: bend
26a: Air suction part 26b: Air discharge part
30: protective cover 40: motor
41: rotation shaft 50: air generating unit
51: front curved plate 51a: through hole
52 blade 52a air intake
52b: air discharge portion 60: protective cover
61: rear cover 61a: through hole
62: front cover

Claims

In the fan comprising an air generating unit coupled to the rotating shaft of the motor and the shaft rotation, and a protective cover surrounding the outside of the air generating unit,
The air generating unit,
A front curved plate having a through hole formed at a center thereof so as to penetrate the rotating shaft and rounded forward toward an edge thereof;
The rear surface of the front curved plate is disposed at regular intervals and the through-hole is formed so that the outside air is sucked at the same time the rotation axis is penetrated in the center is rounded forward toward the border and the border is spaced apart from the border of the front curved plate Rear curved plate; And
A plurality of blades disposed between the front and rear curved plates and spaced at equal intervals along their circumferential direction;
Fan, characterized in that configured to include.

The method of claim 1,
The blade has a bent plate structure having the same curvature such that the line and the rear end thereof are in contact with the front and rear curved plates while being disposed between the front and rear curved plates, and extend toward the center through hole of the rear curved plate. The part becomes a wide air intake part in front and rear width, and the part extending toward the edge part becomes a narrow air outlet part in front and rear width, and the air flows through the air intake part through the air intake part in the center through hole of the rear curved plate. Fan, characterized in that.

The method of claim 2,
The blade fan, characterized in that extending in the radial direction of the front, rear curved plates and is arranged perpendicular to the front, rear curved plates.

The method of claim 3,
The blade has a structure in which the air discharge portion is inclined at a predetermined angle in the circumferential direction, the air suction portion is characterized in that the length is formed alternately along the circumferential direction.

The method of claim 3,
The blade fan is characterized in that the rear end of the air inlet through the through hole of the rear curved plate to extend a predetermined length at the same time, the inclined protrusion inclined at a predetermined angle along the circumferential direction.

The method of claim 2,
The blade fan is disposed at right angles to the front and rear curved plates, characterized in that the air discharge portion is inclined at a predetermined angle in the circumferential direction with respect to the air intake.

In the fan comprising an air generating unit coupled to the rotating shaft of the motor and the shaft rotation, and a protective cover surrounding the outside of the air generating unit,
The air generating unit,
A front curved plate having a through hole formed at a center thereof so as to penetrate the rotating shaft and rounded forward toward an edge thereof; And
It comprises a plurality of blades bonded to the back surface of the front curved plate and spaced apart at equal intervals in the circumferential direction, respectively,
The protective cover,
The rear surface of the front curved plate is disposed at regular intervals and the through-hole is formed so that the outside air is sucked at the same time the rotation axis is penetrated in the center is rounded forward toward the border and the border is spaced apart from the border of the front curved plate A rear cover; And
A front cover bonded to the front edge of the rear cover to cover the air generating unit;
Fan, characterized in that configured to include.

The method of claim 7, wherein
The blade has a bent plate structure having the same curvature so that the front end portion is in contact with the front curved plate, the portion extending toward the center through-hole side of the rear cover is a wide air intake portion in front and rear width, extending to the edge side The fan is characterized in that the front and the narrow width of the air discharge portion, the air flows from the through hole of the rear cover to the air discharge portion of the rim through the air suction portion.

The method of claim 8,
The blade fan is characterized in that the structure extending in the radial direction of the front curved plate and is disposed perpendicular to the front curved plate.