KR101891207B1 - Multilayer disk impeller - Google Patents

Abstract

The present invention relates to a multilayer disk impeller in which the amount of suctioned air and discharged air is large because air is suctioned and discharged from the upper side or the lower side thereof, air is discharged while being accelerated when being discharged by a rotational centrifugal force, noise and vibration are reduced when air is introduced and discharged, and a separate spacing support configuration for spacing the disk body apart is not necessary. The multilayer disk impeller includes: a disk including: a disk body having a disk shape and punched by a preset radius from the center thereof, a plurality of disk supports extending from the disk body toward the center of the disk body, and a disk center shaft extending from an opposite end of the disk support and provided at the center of the disk body; and a plurality of acceleration bosses protruding from an upper surface or a lower surface of the disk body and extending from an inner periphery of the disk body toward an outer periphery of the disk body, wherein the disk is configured such that a plurality of disks form layers, the disk discharges air in a direction of the inner periphery of the disk body toward a direction of the outer periphery of the disk body by using a centrifugal force when being rotated by rotation of a motor, and the acceleration bosses accelerate the disk such that a path of air discharged toward the outer periphery of the disk body temporarily becomes narrower.

Description

[0001] The present invention relates to a multilayer disk impeller,

The present invention relates to a multi-layer disk impeller, and more particularly, to a multi-layer disk impeller which sucks and discharges air from an upper side or a lower side thereof, so that the amount of air sucked and discharged is enriched, and when the air is discharged by rotary centrifugal force, Layered disk impeller in which inflow and outflow noise and vibration are reduced and a separate spacing support structure is not required to separate the disk bodies from each other.

Generally, a ventilation fan has a structure in which a plurality of blades are obliquely connected to a central axis, and lift is generated toward the front of the blades when the central axis is rotated. In such a wing-type fan, when the amount and speed of the inflow air acting on each of the wings are different, that is, in a natural state, a slight difference occurs in the force received by each wing, and vibration and noise are generated.

To solve this problem, a method of reducing vibration and noise by reducing the magnitude of the lift which each wing has to bear when the total flow rate is increased by increasing the number of wings such as 5 wings and 7 wings in the conventional 3 wings has been developed.

However, such a fan has a problem that it is not applicable to a small-sized apparatus such as a cleaner because the size of the blade is very large. When the fan is applied in a small size, it is necessary to rotate the fan at a high speed, It was not free from noise.

Thus, a method has been proposed in which air is sucked from outside or inside by discharging the air from the outside or inside by providing a blade at an oblique angle in the longitudinal direction on the outer periphery of the cylindrical body such as a blower of an automobile.

However, this method also has inherent limitations in that vibration and noise are generated due to the difference in weight between the positions of the blower cylinders when rotating at a high speed.

Therefore, it is necessary to develop a fan having a large air flow rate, which can be applied to various household appliances, and which has little vibration and noise even when rotated at an ultra-high speed of 6,000 rpm.

KR20-0406141 (registration number) 2006.01.09.

An object of the present invention is to provide a multi-layer disk impeller having a large amount of air sucked and discharged because it sucks and discharges air from the upper side or the lower side.

It is also an object of the present invention to provide a multilayer disk impeller which is accelerated and discharged when air is discharged by centrifugal force.

It is another object of the present invention to provide a multilayer disk impeller in which inflow of air and noise and vibrations to the ground are reduced.

It is also an object of the present invention to provide a multi-layer disk impeller in which a separate spacing support structure is not required for separating disc bodies from each other.

The present invention relates to a disk apparatus comprising a disk body formed in a disk shape and pierced with a setting radius from the center, a plurality of disk supports extending from the disk body in the direction of the center of the disk body, A disk having a disk center axis provided at the center of the disk; And a plurality of acceleration protrusions protruding from an upper surface or a lower surface of the disc body, the acceleration protrusions being formed in an outer circumferential direction from an inner circumferential direction of the disc body, wherein each of the discs has a plurality of layers, The acceleration protrusion temporarily reduces the path of the air discharged in the outer circumferential direction of the disc body to thereby accelerate the air in the circumferential direction of the disc body by the centrifugal force, Wherein the center axis of the disc has a thickness greater than a thickness of the disc body and the acceleration protrusion.

In addition, the acceleration protrusion of the present invention has a curved shape toward the rotational direction of the disk from one end in the inner circumferential direction of the disk body toward the other end in the outer circumferential direction of the disk body.

In addition, the thickness of the acceleration protrusion of the present invention decreases from one end to the other end.

Further, in the disc body of the present invention, the opposite surface on which the acceleration protrusion is formed has a shape that gradually increases from the inner circumference to the outer circumferential direction by a predetermined width, and the opposite surface on which the acceleration protrusion is formed is separated from the outer circumference And has a shape gradually becoming thicker toward the inner circumferential direction.

Further, the disk support of the present invention has a curved shape toward the rotation direction of the disk from the disk central axis toward the inner circumferential direction of the disk body.

Further, the center axis of the disk of the present invention is formed with a serration-like engagement hole so that the rotation axis of the motor is engaged with the center thereof.

The start point of the acceleration protrusion of the disc laminated inside the disc is more distant from the inner periphery of the disc body than the start point of the acceleration protrusion of the disc laminated outside, Is formed closer to the outer periphery of the disc body than the end point of the acceleration protrusion of the disc stacked on the outside.

Since the present invention sucks and discharges air from the upper side or the lower side, the effect of sucking and discharging air is enriched.

Further, the present invention has the effect that, when the acceleration projections are formed, the air is accelerated and discharged when the air is discharged by the centrifugal force.

Further, in the present invention, the accelerating projection is curved toward the rotating direction, so that the acceleration effect of the air is increased.

Further, since the present invention is provided with a plurality of discs stacked, there is an effect that a suction force and a toe output become stronger as the discs are laminated.

Further, in the present invention, since the acceleration protrusion has a shape thinned toward the outer circumferential direction of the disc body, there is an effect that noise and vibration of air released to the earth are reduced.

In addition, since the outer periphery of the disk body is thinned toward the outer periphery, the present invention has the effect of reducing noise and vibration of the air discharged to the ground.

In addition, since the disc body is supported by the center axis of the disc and is spaced apart from each other, it is unnecessary to provide a separate support structure for separating the disc bodies from each other.

In addition, according to the present invention, since the shape of the disk support is curved toward the rotation direction, there is an effect that noise and vibration are reduced when the air is introduced.

1 is a perspective view of a multi-layer disk impeller according to an embodiment of the present invention;
2 is an exploded perspective view of a multi-layer disk impeller according to an embodiment of the present invention.
3 is a perspective view of a disk and an acceleration projection of a multi-layer disk impeller according to an embodiment of the present invention.
4 is a plan view of a disk and an acceleration projection of a multilayer disk impeller according to an embodiment of the present invention.
5 is a cross-sectional view of a disk and an acceleration projection of a multi-layer disk impeller according to an embodiment of the present invention.
6 is a use state diagram showing an air acceleration structure of an acceleration protrusion of a multilayer disk impeller according to an embodiment of the present invention.
7 is a simulation result of a disk impeller without an acceleration protrusion.
8 is a simulation result showing pressure due to an acceleration protrusion of a multilayer disk impeller according to an embodiment of the present invention.
9 is a simulation result showing the flow velocity of each layer according to the position of the acceleration projection of the multilayer disk impeller according to the embodiment of the present invention.

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

A multi-layer disk impeller (100) according to the present invention includes a disk body (110) formed in a disk shape and perforated with a setting radius from the center, a plurality of disks (110) extending from the disk body (110) A disk including a support base 112 and a disk center axis 113 extending from the other end of the disk support 112 and provided at the center of the disk body 110, And a plurality of acceleration projections (111) formed in the outer circumferential direction from the peripheral direction.

The disk rotates by the motor and discharges the air in the circumferential direction by the centrifugal force in the outer circumferential direction. To this end, the disk center axis 113 coupled to the rotational axis of the motor and the rotational force of the disk center axis 113 And a disc body 110 rotatably supported by the disc support 112 and having a center portion formed therein.

In the meantime, prior to describing the present invention, the present invention is an apparatus for sucking air in all directions of a lower part and an upper part and discharging the air laterally without any distinction between upper and lower parts, A protrusion may be formed on the upper surface or the lower surface of the disc body 110. In order to explain the idea of the invention in a consistent and concise manner, the surface of the disc body 110 on which the acceleration protrusion 111 is formed is assumed to be the upper surface.

The disk body 110 is formed in a disk shape and has a setting radius from the center thereof, and has a planar shape as a normal compact disk. The disc body 110 is supported on the disc center shaft 113 by a disc support 112 and is supported by the disc support 112 when the disc center shaft 113 is rotated by rotation of the motor. 113).

The reason why the central portion of the disc body 110 is pierced and spaced apart from the center of rotation is that when air around the periphery of the disc body 110 is discharged in the circumferential direction of the disc body 110 by the centrifugal force, 110 from the direction of the center.

The disc support 112 connects the disc body 110 and the disc center shaft 113 so that the disc body 110 can be supported by the disc center shaft 113. To this end, To the center of the disc body 110, and the other end is connected to the disc center shaft 113. [ In this case, the disk support 112 and the disk center shaft 113 are connected by a bolt, a joint, or the like. In addition, the disk support 112 and the disk center shaft 113 are connected to each other by a single frame Includes all being injection molded.

In order to prevent the vibration of the disk support 112, a plurality of disk support rods 112 are preferably arranged to have the same angle. The disc support 112 has a curved shape toward the rotational direction of the disc body 110 from the disc center axis 113 toward the inner circumferential direction of the disc body 110, It is preferable that the angle of collision with the air supplied in the circumferential direction is made small so that the noise can be reduced.

The disc support 112 does not extend directly from the inner periphery of the disc body 110 when extended from the disc body 110 but extends in the outer peripheral direction of the disc body 110 more than the inner periphery of the disc body 110 So that the air guided to the disc support 112 can be moved to the inside of the disc body 110 more quickly. In addition, the disk support 112 is preferably configured to have a greater thickness than the disk body 110 for this purpose.

The disk center shaft 113 is coupled to the rotation shaft of the motor and transmits the rotation force of the motor to the disk body 110 through the disk support 112. To this end, the disk center shaft 113 extends from the other end of the disk support 112, And is provided at the center of the body 110.

When the disk center shaft 113 is coupled to the rotation shaft of the motor, a serration-like coupling hole 114 is formed so as to receive the rotational force of the motor, and the rotation shaft of the motor is engaged with the coupling hole 114. Therefore, toothed projections should be formed in the longitudinal direction so as to correspond to the tooth shape of the coupling hole 114 in the rotation axis of the motor.

Since the disk center shaft 113 supports the disk body 110 via the disk support 112, the distance between the disk bodies 110 is also determined by the disk center axis 113. [ At this time, since the space between the disk body 110 and the acceleration protrusion 111, which will be described later, and the adjacent disk body 110 must be secured, the thickness of the disk center shaft 113 is determined by the distance between the disk body 110 and the acceleration protrusions 111) in the thickness direction.

However, in the disk having the above-described structure, when the air in the circumferential direction in the disk body 110 is moved in the outer circumferential direction by the centrifugal force, the movement path of the air is directed to the side and upward. Accordingly, in the present invention, when the air is discharged by the rotation centrifugal force of the disk body 110, the disks are stacked so as to be spaced apart from each other so that the air can be moved only sideways. A cover disk 101 is provided on the uppermost layer of the stacked disks so as to guide the air of the adjacent lower layer disk to the side. In this cover disk 101, there is no acceleration protrusion 111 to be described later, but only the disk support 102 and the disk center shaft 103 are provided.

On the other hand, when air is moved in the outer circumferential direction by the centrifugal force in the vicinity of the inner periphery of the disk body 110, the air rotates in a direction opposite to the rotation direction when viewed from the surface of the disk body 110. That is, since the velocity at a specific point near the outer periphery is larger than the velocity at a specific point near the inner periphery when the disk body 110 rotates, the centrifugal force is received near the inner periphery, The air is seen to be lagging behind the rotational speed gradually as seen from the disc body 110 (Coriolis effect).

In order to further accelerate the air discharged in a direction opposite to the rotation direction of the disk body 110 (which is actually discharged and rotated in the same direction as the rotation direction of the disk body 110) in the corresponding direction, And an acceleration projection 111 protruding from an inner circumferential direction to an outer circumferential direction is provided on an upper surface of the body 110.

The acceleration protrusions 111 protrude from the upper surface of the disc body 110 and are formed at equal intervals from the inner circumferential direction to the outer circumferential direction of the disc body 110. The acceleration protrusion 111 functions to accelerate the air flow path when the air is moved in a direction opposite to the rotation direction of the disc body 110 as the disc body 110 rotates.

5 and 6, the air is discharged in a spiral direction in a clockwise direction opposite to the disk body 110 when viewed from the disk body 110. Acceleration projections 111 are formed on the path of the air So that the air flow path becomes temporarily narrow while the air passes over the acceleration protrusion 111. Therefore, the flow rate of the air passing through the narrow passage is increased by the venturi effect. The air passing through one accelerating protrusion 111 passes through at least one succeeding accelerating protrusion 111 and is further accelerated and discharged to the outside of the disc body 110 at a higher speed. 7 and FIG. 8, the air is accelerated by the acceleration protrusion in FIG. 8 where the acceleration protrusion 111 is formed, and the pressure is lowered, so that more air is sucked from the circumference of the disc body 110, It can be seen that a high pressure is formed on the entire surface of the body 110.

At this time, the acceleration protrusions 111 extend from one end of the inner circumferential direction of the disc body 110 in a shape perpendicular to the plane root of the disc body 110 through which the air passes, so as to maximize the compression effect of the passage, 110 toward the other end of the outer circumferential direction of the disc body 110, In other words, as viewed from the top view, the acceleration protrusion 111 is positioned so as to extend from one end of the inner circumferential direction of the disc body 110 to the other end of the outer circumferential direction of the disc body 110, And is curved so as to be positioned in front of the rotational direction of the disk. As shown in FIG. 6, it is preferable that the rotation direction side surface of the disc body 110 is formed so as to have a gentle slope than the opposite side surface.

It is preferable that the thickness of the acceleration protrusion 111 decreases from one end portion to the other end portion of the acceleration protrusion 111. This is because the thickness of the acceleration protrusion 111 is preferably greater than the thickness of the acceleration protrusion 111 in the outer peripheral direction of the disc body 110 This is because vibration of the disk body 110 may occur when the flow path is narrowed in width. Accordingly, the acceleration protrusion 111 is formed so as to be reduced in thickness toward the outer circumferential direction of the disc body 110, so that vibration and noise during rotation of the disc body 110 can be reduced.

Meanwhile, in order to prevent the disc body 110 from being vigilant and / or noise due to eddy current when the air is discharged, the opposite side of the disc body 110 on which the acceleration protrusions 111 are formed, It is preferable to form the shape gradually increasing from the peripheral direction toward the inner peripheral direction. In other words, the outer periphery becomes gradually thinner toward the outer periphery. Since the vortex is generated when the fluid moves in a place where there is a sharp step, Vibration and noise can be reduced.

Also, in the vicinity of the inner periphery of the disk body 110, on the other side where the acceleration protrusion 111 is formed, that is, in order to reduce the resistance due to the vortex phenomenon and to reduce the vibration and noise due to vortex, It is preferable that the shape of the bottom surface is formed so as to have a gradually thicker shape from the inner circumferential direction to the outer circumferential direction by the set width. In other words, the shape becomes gradually thinner as the inner periphery becomes closer to the inner periphery.

In addition, in the present invention having the above-described configuration, when the disk is coupled to the rotation shaft of the motor, the acceleration projections 111 formed on the disk can be combined so as to have mutually different angles. That is, assuming that the positions of the acceleration projections 111 are projected on the plan view, all of the acceleration protrusions 111 may be configured so as not to overlap with each other, or the inner disc may be interposed between the inner discs, And can be coupled to the rotation shaft of the motor.

When the air is accelerated by the accelerating protrusion 111 and air is discharged in the outer circumferential direction of the disc body 110, the air must be supplied from the inner hollow portion. At this time, the acceleration protrusions 111 of all the disc bodies 110 If they are combined so as to have the same angle, the inflow of air from each of the discs is reduced because all the discs require inflow of air. Therefore, in order to place a time difference between the respective disks due to the discharge of the air, the disks are coupled to each other at an angle different from each other.

Meanwhile, in the present invention, the speed of air discharged can be leveled by making the positions of the acceleration projections 111 of the disks stacked on the inner side and the disks stacked on the outer side different from each other.

More specifically, the air introduced from the outside to the inner side of the inner periphery of the disc body 110 of the stacked disc has more air introduced into the discs located outside, and relatively less air is introduced into the inner discs do. As a result, the speed of the discharged air differs between the inner disk and the outer disk, and the difference in the discharge speed of the air causes a vortex phenomenon at the end of the disk, Causes it to be bad.

Therefore, in the case of a disk stacked on the inner side, it is necessary to accelerate the air to the vicinity of the outer periphery of the disk body 110 and discharge the disk body 110 as much as the amount of the introduced air is small. At this time, since the speed of the air to be discharged is increased by the acceleration protrusion 111, it is preferable that the acceleration protrusion 111 of the disk stacked inside is formed to the vicinity of the outer periphery.

For example, when the four disks are stacked, the acceleration projections 111 formed on the two inner disks are formed so as to be more biased toward the outer circumferential direction of the disk body 110 than the acceleration projections 111 formed on the outer two disks .

In other words, when a virtual scale of 1 to 10 is engraved on a radial straight line extending from the inner periphery to the outer periphery of the disc body, the acceleration projections 111 formed on the outer two discs are divided into 1 to 8, The acceleration protrusions 111 formed on the inner circumferential surface are formed so as to occupy scales from 2 to 9.

The acceleration protrusion 111 of the inner disc is positioned at a position closer to the acceleration protrusion 111 of the outer disc than to the acceleration protrusion 111 of the outer disc, It is of course possible that the starting point is further apart from the inner periphery of the disc body 110 and the end point is formed so as to be closer to the outer periphery of the disc body 110. [

The simulation result applying this configuration is shown in Fig. Referring to FIG. 9, it can be seen that the starting point of the acceleration protrusion 111 of the disc stacked in the center is further retracted in the outer circumferential direction than the starting point of the acceleration protrusion 111 of the disc stacked on the outer side. Therefore, it can be seen that the air discharged from the outer disk does not vortex but is rapidly diffused to the outside by the air discharged from the inner disk.

The present invention having the above-described structure can be widely used in the field of using air suction or discharge, such as an electric fan, a vacuum cleaner, a hair dryer, a dryer, an air compressor, a blower, The air is sucked and discharged, so that the suction and discharge amount of the air is enriched.

Further, in the present invention, since the acceleration protrusion 111 is formed, there is an effect that the air is accelerated and discharged when the air is discharged by the centrifugal force.

Further, in the present invention, the accelerating projection 111 is curved toward the rotating direction, so that the acceleration effect of the air is increased.

Further, since the present invention is provided with a plurality of discs stacked, there is an effect that a suction force and a toe output become stronger as the discs are laminated.

In addition, since the acceleration protrusion 111 has a shape that is thinned toward the outer circumferential direction of the disc body 110, the present invention has the effect of reducing noise and vibration of the air discharged to the earth.

In addition, since the outer periphery of the disc body 110 has a shape thinned toward the outer periphery of the disc body 110, the present invention has the effect of reducing noise and vibration of the air.

In addition, since the disk body 110 is supported by the disk center shaft 113 and is spaced apart from each other, a separate spacing support structure for separating the disk bodies 110 from each other is unnecessary.

Further, in the present invention, the shape of the disk support 112 curves toward the rotation direction, so that there is an effect that noise and vibration are reduced when the air is introduced.

100: multilayer disk impeller
101: Cover disk
110: disc body
111: Acceleration projection
112: Disk support
113: disk center axis
114:

Claims (7)

A disk body having a disk shape and formed with a predetermined radius from the center thereof; a plurality of disk supports extending from the disk body toward the center of the disk body; A disc comprising a disc center axis;
A plurality of acceleration protrusions protruding from an upper surface or a lower surface of the disc body and formed in an outer circumferential direction from an inner circumferential direction of the disc body;
, ≪ / RTI &
Wherein each of the discs has a plurality of layers, and when each of the discs is rotated by rotation of the motor, air in a circumferential direction in the disc body is discharged in a circumferential direction by a centrifugal force, Wherein the center axis of the disk has a thickness greater than a thickness of the disk body and the acceleration projection,
Wherein the disk support has a curved shape toward the rotational direction of the disk from the disk central axis toward the inner circumferential direction of the disk body.
The method according to claim 1,
The acceleration protrusion is curved so as to be positioned in front of the normal direction of the disk in the rotational direction of the disk from a position in a plane following the one end in the inner circumferential direction of the disk body to the other end in the outer circumferential direction of the disk body Multilayer disk impeller.
3. The method of claim 2,
Wherein the acceleration protrusion has a thickness decreasing from one end of the inner circumferential direction of the disk body to the other end of the disk body in the outer circumferential direction.
The method according to claim 1,
Wherein the opposite surface of the disk body on which the acceleration protrusion is formed has a shape that gradually increases in thickness from the inner circumference to the outer circumferential direction by a predetermined width and the opposite surface on which the acceleration protrusion is formed faces from the outer circumference to the inner circumferential direction A multilayer disk impeller having a gradually thicker shape.
delete The method according to claim 1,
Wherein the center axis of the disk has a saw-toothed coupling so that the rotation axis of the motor is engaged with the center thereof.
The method according to claim 1,
The starting points of the acceleration protrusions of the disc laminated inside are formed further apart from the inner circumference of the disc body than the starting point of the acceleration protrusions of the discs stacked on the outer side and the end points of the acceleration protrusions of the discs stacked on the inner side are laminated on the outer side Layer disc impeller is formed closer to the outer periphery of the disc body than the end point of the acceleration protrusion of the disc.

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