KR20230114510A - Dust collector and cleaner having the same - Google Patents

Abstract

Disclosed is a dust collector which comprises: a dust collection case; and a blade that is rotatably provided inside the dust collection case and is provided to discharge air flowing in through a blade opening formed along the circumference into a blade opening formed on one side along the rotation axis direction, wherein the blade is a wing formed to be inclined in a direction opposite to the rotation direction of the blade, and includes a wing having a first wing part and a second wing part formed to a different length from the first wing part.

Description

Dust collector and cleaner having the same {DUST COLLECTOR AND CLEANER HAVING THE SAME}

The present invention relates to a dust collector and a vacuum cleaner having the same, and more particularly, to a dust collector having an improved structure and a vacuum cleaner having the same.

BACKGROUND ART A vacuum cleaner is a device that cleans a room by removing rubbish, and a vacuum cleaner is generally used at home. A vacuum cleaner sucks in air by using a suction force of a fan motor unit, and then separates dirt from the sucked air with a device such as a filter to clean the room. These vacuum cleaners are of a canister type and an upright type. Recently, a robot vacuum cleaner that performs cleaning work by autonomously traveling in a cleaning area without user manipulation and sucking in dirt such as dust from the surface to be cleaned. is becoming popular.

The vacuum cleaner includes a dust collector therein so that dirt contained in sucked air is filtered out by a predetermined filtering device. The filtering device for filtering dirt in the dust collector includes a porous filter device in which dirt is forcibly filtered while air passes through the porous filter, and a cyclone type dust collector in which dirt is filtered during a cyclone flow of air.

The cyclone-type dust collector needs a size larger than a predetermined size to filter dirt, and thus has a relatively low dust collection efficiency.

One aspect of the present invention provides a cleaner and a dust collector capable of improving dust collection efficiency.

A dust collecting device according to the spirit of the present invention is provided rotatably in a dust collecting case and the inside of the dust collecting case, and air introduced through a blade opening formed along the circumference is opened by a blade formed on one side along a rotation axis direction. It includes a blade provided to be discharged to the unit, wherein the blade is a wing formed inclined toward a direction opposite to the rotational direction of the blade, having a first wing and a second wing formed to a different length from the first wing. contains the wings

The second wing is disposed outside the first wing along the radial direction of the blade, and may be longer than the first wing.

The wing is disposed between the first wing and the second wing, and may include a third wing formed shorter than the first wing.

The dust collector may further include a connection case detachably coupled to the dust collection case, and the connection case may include a partition wall extending toward the third wing.

The dust collector is configured to generate power for rotating the blade, and may further include a blade motor mounted to the connection case.

The dust collector may further include a motor case provided to transfer power generated from the blade motor to the blade.

The first wing portion may be formed to decrease in length toward the center of the blade.

The blade may include a blade blocking portion disposed on the other side opposite to one side along the direction of the rotation axis.

The wing has a difference between a first blade angle formed by a tangent line of the first wing portion with respect to the radial direction of the blade and a second blade angle formed by a tangent line formed by the second wing portion with respect to the radial direction of the blade. can be formed to have

The wing may be formed such that a wing angle formed by a tangent line of the wing with respect to a radial direction of the blade is greater than 40°.

The wing may include a plurality of wings disposed along the circumferential direction of the blade.

In another aspect, a vacuum cleaner according to the spirit of the present invention includes a main body accommodating a suction motor and a fan, and a dust collecting device detachably mounted to the main body, wherein the dust collecting device includes a dust collecting case and rotation inside the dust collecting case. Possibly provided, and including a blade provided to discharge air introduced through the blade opening formed along the circumference to a blade opening formed on one side along the rotation axis direction, the blade is opposite to the rotation direction of the blade As a wing formed inclined toward the direction, it includes a wing having a first wing portion and a second wing portion formed to have a different length from the first wing portion.

The cleaner may further include an extension pipe communicating with an inlet formed in the dust collection case, and a suction head connected to the extension pipe.

The dust collection case may include an outlet formed to communicate with the main body.

The main body may include an exhaust port provided to discharge air introduced into the main body through the outlet port to the outside.

The second wing is disposed outside the first wing along the radial direction of the blade, and may be longer than the first wing.

The wing is disposed between the first wing and the second wing, and may include a third wing formed shorter than the first wing.

The dust collector may further include a connection case disposed between the dust collection case and the body, and the connection case may include a partition wall extending toward the third wing.

The first wing portion may be formed to decrease in length toward the center of the blade.

The blade may include a blade blocking portion disposed on the other side opposite to one side along the direction of the rotation axis.

According to the spirit of the present invention, since the vacuum cleaner and the dust collector can separate dirt in the air by rotation of the blade, dust collection efficiency can be improved.

1 shows a cleaner according to an embodiment of the present invention.
FIG. 2 shows an exploded dust collection case of the cleaner shown in FIG. 1 .
FIG. 3 shows a side cross-section of the cleaner shown in FIG. 1 .
FIG. 4 shows the dust collector shown in FIG. 2 in an exploded view.
FIG. 5 is an enlarged view of a cross section of a part of the dust collector shown in FIG. 3 .
Figure 6 shows a top view of the blade shown in Figure 4;
FIG. 7 shows one wing of a plurality of blades of the blade shown in FIG. 4 .
8 shows a cross-section of a vacuum cleaner having a dust collector according to another embodiment of the present invention.

The embodiments described in this specification and the configurations shown in the drawings are only one preferred example of the disclosed invention, and there may be various modifications that can replace the embodiments and drawings in this specification at the time of filing of the present application.

In addition, the same reference numerals or numerals presented in each drawing in this specification indicate parts or components that perform substantially the same function.

In addition, terms used in this specification are used to describe embodiments, and are not intended to limit and/or limit the disclosed invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "having" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It does not preclude in advance the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In addition, terms including ordinal numbers such as “first” and “second” used herein may be used to describe various components, but the components are not limited by the terms, and the terms It is used only for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. The term “and/or” includes any combination of a plurality of related listed items or any of a plurality of related listed items.

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

Hereinafter, for convenience of description, a stick-type vacuum cleaner, which is a kind of vacuum cleaner, will be described as an example, but the configuration of the present disclosure is not limited to the stick-type cleaner. For example, the configuration of the present disclosure may be applied to a canister-type cleaner, a robot cleaner, and the like.

1 shows a cleaner according to an embodiment of the present invention. FIG. 2 shows an exploded dust collection case of the cleaner shown in FIG. 1 . FIG. 3 shows a side cross-section of the cleaner shown in FIG. 1 .

1 to 3, the vacuum cleaner 1 is provided with a suction head 20 provided to suck foreign substances such as dust from a surface to be cleaned by air suction force, and foreign substances sucked through the suction head 20 are collected. It may include a main body 10 to be.

The cleaner 1 may include an extension pipe 30 provided to connect the suction head 20 and the main body 10 to each other.

The suction head 20 includes a suction brush (not shown), and is in close contact with the cleaning surface to suck air and foreign substances from the cleaning surface. The suction head 20 may be rotatably coupled to the extension pipe 30 .

The extension tube 30 may be formed of a pipe having a predetermined rigidity or a flexible hose. The extension tube 30 may transfer suction force generated through the suction motor 13 to the suction head 20 and guide foreign substances such as air and dust sucked through the suction head 20 to the main body 10 .

The extension tube 30 may further include a suction head connection part 32 . The suction head connection part 32 may be provided to separate the suction head 20 from the main body 10 or to couple it to the main body 10 .

The main body 10 includes a fan 14 provided rotatably to generate a suction force on the surface to be cleaned, a suction motor 13 provided to provide rotational force to the fan 14, and separating dust from the sucked air. It may include a dust collector 100 configured to collect, a handle 40 provided to be gripped by a user, and a battery 50 provided to supply power to the suction motor 13 .

The suction motor 13 performs a function of converting electrical force into mechanical rotational force. In order to perform the above function, the suction motor 13 includes a stator 13b having a coil, a rotor 13a having magnetism and being rotatable by electromagnetic force, and a rotor shaft rotatably passing through the rotor 13a. (13c) may be included. A fan 14 connected to the suction motor 13 through the rotor shaft 13c of the suction motor 13 may be provided inside the main body 10 .

In FIG. 3, the suction motor 13 is shown as an inner-rotor type in which the rotor 13a is located on the inside of the stator 13b, but is not limited thereto, and the suction motor has a rotor on the outside of the stator. It may be provided as an outer-rotor type located in.

The body 10 may include an intake port 11a through which air and foreign substances are sucked into the body 10 and an exhaust port 12a through which air and foreign substances are discharged to the outside of the body 10 . The main body 10 may include a suction duct 11 communicating with one end of the extension pipe 30, and one end connected to one end of the extension pipe 30 among both ends of the suction duct 11 has an intake port 11a. can be formed Thus, air and foreign matter may be introduced into the body 10 through the intake port 11a of the intake duct 11 . However, it is not limited thereto, and the main body 10 does not include a duct structure such as the intake duct 11, and the intake port 11a and the extension pipe 30 may be directly connected.

The main body 10 may include an exhaust case 12, and an exhaust port 12a may be formed on an outer circumferential surface of the exhaust case 12.

The main body 10 may include a manipulation unit 17 . The user may turn on/off the cleaner 1 or control suction strength by manipulating a power button or the like provided on the control unit 17 .

A dust collector 100 may be provided in the main body 10 . Air introduced into the main body 10 through the inlet 11 may be introduced into the dust collector 100 through the inlet 112 . The dust collector 100 may be coupled to the body 10 in a detachable manner.

The dust collector 100 may include a dust collection case 110 forming a dust collection chamber 111 in which dust is accommodated. Dust in the air introduced into the body 10 through the intake port 11 is separated from the air by the blade 120 and may be collected in the dust collection chamber 111 formed inside the dust collection case 110. . The air from which dust is separated by the blade 120 may be discharged to the outside of the dust collector 100 through the outlet 113 .

In order to allow air to flow from the inlet 112 to the outlet 113, the suction motor 13 may be located downstream of the dust collector 100 on an air flow path through which air flows from the inlet 112.

Air discharged to the outside of the dust collector 100 through the outlet 113 may pass through the suction motor 13 and the exhaust port 12a sequentially and be discharged to the outside of the main body 10 . The main body 10 is exhausted between the dust collector 100 and the exhaust port 12a so that dust in the air can be filtered before the air inside the main body 10 is discharged to the outside of the main body 10 through the exhaust port 12a. A filter 15 may be included. The exhaust filter 15 may be a HEPA filter.

With this configuration, when a suction force is generated by the suction motor 13 and the fan 14 inside the main body 10, air and foreign substances such as dust in the air can be sucked into the suction head 20. Air and dust sucked into the suction head 20 are sucked into the body 10 through the extension tube 30 and the intake port 11a. Air introduced into the body 10 is introduced into the dust collector 100 through the inlet 112, and dust in the air may be separated from the air by the blade 120. Dust separated from the air is accommodated in the dust collecting chamber 111 formed inside the dust collecting case 110, and the air passing through the blade 120 is discharged to the outside of the dust collector 100 through the outlet 113. The air discharged to the outside of the dust collector 100 passes through the exhaust filter 15 and is filtered once more, and may be exhausted to the outside of the main body 10 through the exhaust port 12a.

FIG. 4 shows the dust collector shown in FIG. 2 in an exploded view. FIG. 5 is an enlarged view of a cross section of a part of the dust collector shown in FIG. 3 . Figure 6 shows a top view of the blade shown in Figure 4; FIG. 7 shows one wing of a plurality of blades of the blade shown in FIG. 4 .

Referring to FIG. 4 , the dust collecting device 100 may include a blade 120 accommodated inside the dust collecting case 110 . The blade 120 may be provided to be rotatable inside the dust collecting case 110 by rotational force generated by the blade motor 140 .

The blade 120 may include a plurality of blades 121 continuously arranged in a circumferential direction. A channel for the flow of air containing dirt may be formed between the plurality of wings 121 .

Referring to FIGS. 4 and 6 , the plurality of blades 121 may be inclined in a direction opposite to the rotational direction of the blade 120 . The blade 120 may rotate counterclockwise, and the plurality of blades 121 may be inclined clockwise from the approximate center of the blade 120 .

When the blade 120 rotates, dirt introduced into the blade 120 is moved to the outside of the blade 120 by centrifugal force. Dirt moving to the outside of the blade 120 may be discharged from the blade 120 and collected in the dust collection chamber 111 .

Referring to FIGS. 4 and 5 , a blade opening 126 may be formed along a circumference of the blade 120 in a radial direction. While the blade 120 rotates, air containing dirt may flow into the inside of the blade 120 through the blade opening 126, and as the blade 120 rotates, the dirt separated from the air by centrifugal force It may be discharged to the outside of the blade 120 through the blade opening 126 and collected in the dust collecting chamber 111 .

A blade opening 127 may be formed at one end of the blade 120 along the rotation axis direction. The blade opening 127 may be formed on an upper surface of the blade 120 . Air separated from dirt inside the blade 120 may move to the exhaust case 12 of the main body 10 through the blade opening 127 .

The blade 120 may have a blade blocking portion 128 formed at the other end opposite to one end where the blade opening 127 is located along the direction of the rotation axis. The blade blocking portion 128 may be formed on the lower surface of the blade 120 . Air containing dirt may be introduced into the blade 120 through the blade opening 126 by the blade blocking portion 128 .

As the distance between the blades 120 becomes narrower, the efficiency of separating dirt may increase. When the number of the plurality of wings 121 is increased to reduce the distance between the plurality of wings 121, the weight of the blade 120 may increase and manufacturing difficulty may increase.

Referring to FIG. 6 , an angle formed by a tangential line of the plurality of blades 121 with respect to the radial direction of the blade 120 may be defined as a blade angle (a). The blade 120 may reduce the distance between the plurality of wings 121 as the wing angle a increases. Therefore, by increasing the wing angle (a), the dirt separation efficiency of the blade 120 may be increased.

Meanwhile, the dirt separation efficiency of the blade 120 is affected by the periodic friction coefficient of the plurality of blades 121 as well as the blade angle a of the plurality of blades 121 . Therefore, if the coefficient of static friction is determined by the processing method and material of the plurality of blades 121, the maximum blade angle a of the plurality of blades 121 that can maximize the dirt separation efficiency of the blade 120 value can be determined. The plurality of wings 121 may be formed such that the wing angle a is approximately 40° or more.

In addition, when the plurality of wings 121 are straight wings, the blade angle a decreases toward the outside along the radial direction of the blade 120, and the spacing between the plurality of wings 121 also increases, Accordingly, the dirt separation efficiency of the blade 120 may decrease.

When the plurality of wings 121 are curved wings, the blade angle a may be maintained substantially the same toward the outside along the radial direction of the blade 120, and the spacing between the plurality of wings 121 is also approximately the same. can keep it The blade angle (a) of the plurality of blades 121 may be formed substantially the same from the center to the outside along the radial direction of the blade 120 . Accordingly, when the plurality of blades 121 are curved blades, the dirt separation efficiency of the blade 120 may be increased.

Referring to FIGS. 6 and 7 , the plurality of wings 121 may include a first wing 121a, a second wing 121b, and a third wing 121c. The plurality of wings 121 may be disposed in the order of a first wing 121a, a third wing 121c, and a second wing 121b toward the outside from the center of the blade 120. The plurality of wings 121 may be divided into a first wing 121a, a second wing 121b, and a third wing 121c, respectively.

In the plurality of wings 121, the angle formed by each tangent line of the first wing 121a, the second wing 121b, and the third wing 121c with respect to the radial direction of the blade 120 is approximately The same can be provided. The blade angle a1 of the end close to the center of the blade 120 in the first wing portion 121a is 10 It can be formed to have a difference within °. Accordingly, it is possible to minimize an increase in the distance between the plurality of blades 121 toward the outside along the radial direction of the blade 120 .

The first wing portion 121a may be disposed close to the center of the blade 120 . The first wing portion 121a may have a lower height than the second wing portion 121b. The first wing portion 121a may be formed to increase in length toward the outside from the center of the blade 120 . The surface of the first wing portion 121a facing the blade opening 127 may be inclined upward toward the outside from the center of the blade 120 .

The second wing portion 121b may be disposed far from the center of the blade 120 . The second wing portion 121b may have a different length from that of the first wing portion 121a. The second wing portion 121b may be formed longer than the first wing portion 121a. The second wing portion 121b may have a higher height than the first wing portion 121a.

The third wing 121c may be disposed between the first wing 121a and the second wing 121b. The third wing portion 121c may have a height lower than that of the first wing portion 121a. The third wing portion 121c may be shorter than the first wing portion 121a.

A space S may be formed between the first wing 121a and the second wing 121b by the third wing 121c. A partition 176 of the connection case 170 may be positioned between the first wing 121a and the second wing 121b. The partition wall 176 may extend toward the third wing portion 121c. The barrier rib 176 may block some dirt introduced through the outer circumference of the blade 120 . Part of the dust introduced through the blade opening 126 may be blocked by the partition wall 176 .

In addition, a positive pressure is generated while the blade 120 rotates due to a height difference between the first wing portion 121a and the second wing portion 121b, and due to this positive pressure, fine-sized dust is removed from the main body 10. You can reduce the amount of movement to .

In addition, as the first wing portion 121a has a lower height than the second wing portion 121b, the blade 120 may secure an area in which air flow inside the blade 120 can be stabilized. Specifically, the first wing 121a having a lower height than the second wing 121b may reduce generation of vortex while air is discharged through the blade opening 127. In addition, the first wing 121a having a lower height than the second wing 121b reduces the flow rate of air discharged through the blade opening 127 to improve the dust separation efficiency of the blade 120. there is. In addition, since the first wing 121a having a lower height than the second wing 121b has a small contact area with the air flowing into the blade 120, the driving torque due to rotation of the blade 120 is reduced. can make it

The dust collector 100 may include a blade motor 140 that rotates the blade 120 . The blade motor 140 may be accommodated in the motor case 160 . The blade motor 140 may be mounted on the connection case 170 . The blade motor 140 may be provided to generate power for rotating the blade 120 . The blade motor 140 may have a rotation axis extending substantially in a vertical direction. When the blade motor 140 is mounted on the main body 10, it may have a rotation axis according to the direction in which the extension pipe 30 extends.

The dust collector 100 may include a motor case 160 in which at least a portion of the blade motor 140 is accommodated. The motor case 160 may be fixed to the blade 120 . The motor case 160 may be connected to the shaft of the blade motor 140 . The motor case 160 may transfer rotational force of the blade motor 140 to the blade 120 . The motor case 160 may include a case connection portion 169 engaged with the blade connection portion 129 of the blade 120 .

The dust collector 100 may include a connection case 170 disposed between the dust collection case 110 and the main body 10 . The connection case 170 may be detachably coupled to the dust collecting case 110 . Connection case 170 may be coupled to the upper end of the dust collecting case (110). An outlet 113 may be formed in the connection case 170 .

The connection case 170 may include a partition wall 176 extending toward the third wing portion 121c. The partition 176 may block some of the dirt flowing into the blade 120 from moving from the second wing 121b to the first wing 121a.

A coupling button 16 provided to separate the dust collector 100 from the main body 10 may be provided in the connection case 170 . The coupling button 16 may be located between the exhaust case 12 and the connection case 170 . When the user presses the combination button 16, the dust collector 100 is separated from the main body 10, and the user can remove dust accommodated in the dust collection chamber 111. However, it is not limited thereto, and the dust collector 100 may be separated from the main body 10 in various ways. In addition, the dust collector 100 may remove dust collected in the dust collection chamber 111 by including a separate dust discharge door (not shown).

A general cyclone-type dust collector has a limited inlet structure, such as a helical inlet, a tangential inlet, and a guide vane inlet, in order to separate dust with centrifugal force by internal rotational flow, and the shape of the dust collection case is cylindrical. limited to In the dust collector 100 according to the present disclosure, the centrifugal force for separating dirt from the air is generated not by the flow inside the dust collecting case 110 but by the rotating blade 120, so the dust collector 100 There is no limitation on the arrangement of the inlet and/or outlet, and there is no limitation on the shape of the dust collecting case 110 .

In addition, the cyclone-type dust collector must move a distance corresponding to about 1/2 of the inlet width in a radial direction to separate dirt in the air so that dust can reach the inner wall surface of the cyclone and be collected. However, in the case of the blade 120 according to the present disclosure, since dust can be collected only by moving a distance corresponding to 1/2 of the width of the channel formed between the plurality of blades 121, the dust collector 100 according to the present disclosure ) can be reduced in size compared to a cyclone-type dust collector, and can have a relatively high dirt separation efficiency compared to power.

In addition, the dust collector 100 according to the present disclosure is not a method of generating centrifugal force by rotating the air inside the dust collecting case 110 as a whole, but a method of generating centrifugal force by rotating only the air passing through the blade 120. , It is possible to obtain approximately the same dust separation efficiency with lower energy consumption than the existing cyclone-type dust collector.

In addition, the cyclone-type dust collector includes a grill to prevent relatively large dirt from passing through. As the rotational speed of the grill surface is relatively slower than the surroundings, when hair is located adjacent to the grill, hair A tension is applied to the grille and the hair is wound around the perimeter of the grill. In the dust collector 100 according to the present disclosure, the rotation speed of the outer end of the blade 120 is formed faster than the surroundings, and thus, a compressive force is applied to the hair, the hair is bundled, and the phenomenon of being wound around the blade 120 can prevent

8 shows a cross-section of a vacuum cleaner having a dust collector according to another embodiment of the present invention.

Referring to FIG. 8 , a cleaner 2 having a dust collector 200 according to another embodiment of the present invention will be described. Components identical to those of the vacuum cleaner 1 shown in FIG. 3 are assigned the same reference numerals, and detailed descriptions may be omitted.

Referring to FIG. 8 , the cleaner 2 may include a dust collector 200 . Unlike the dust collector 100 shown in FIG. 3 , the dust collector 200 may include a cyclone device 291 disposed below the blade 120 . The air containing dirt flowing into the dust collector 200 may be primarily separated from dirt in the cyclone device 291, and the air containing the cyclone device 291 may be secondarily separated from the dirt in the blade 120. It can be. Air introduced into the dust collector 200 through the inlet 112 may flow into the cyclone inlet 292 and be primarily filtered in the cyclone device 291 . The filth filtered by the cyclone device 291 may be discharged to the dust collecting chamber 111 through the cyclone inlet 292 and collected. The air primarily filtered of dirt may move to the blade 120 through the cyclone outlet 293 . Air containing dirt moved to the blade 120 may be secondarily filtered by the blade 120 .

Since the dust collector 200 of the vacuum cleaner 2 shown in FIG. 8 further includes a cyclone device 291 compared to the dust collector 100 shown in FIG. 3, even if the operating rotational speed of the blade 120 is reduced. It is possible to obtain substantially the same dirt separation efficiency as that of the dust collector 100 shown in FIG. 3 .

In the above, specific embodiments have been illustrated and described. However, it is not limited to the above embodiments, and those skilled in the art will be able to make various changes without departing from the gist of the technical idea of the invention described in the claims below. .

One; vacuum cleaner
10; main body
20; suction head
100; dust collector
110; dust collection case
111; dust collection chamber
120; blade
121; wing
126; blade opening
127; blade opening
128; blade block
140; blade motor
160; motor case

Claims (20)

dust collection case; and
A blade rotatably provided inside the dust collecting case and provided to discharge air introduced through a blade opening formed along the circumference to a blade opening formed on one side along a rotation axis direction; includes,
The blade is a blade formed inclined toward a direction opposite to the rotational direction of the blade, and includes a wing having a first wing portion and a second wing portion formed to have a different length from the first wing portion. According to claim 1,
The second wing portion is disposed outside the first wing portion along the radial direction of the blade, and is formed longer than the first wing portion. According to claim 1,
The wing is disposed between the first wing and the second wing and includes a third wing formed shorter than the first wing. According to claim 3,
It further includes; a connection case detachably coupled to the dust collection case;
The connection case includes a partition wall extending toward the third wing. According to claim 4,
A dust collector further comprising a blade motor configured to generate power for rotating the blade and mounted to the connection case. According to claim 5,
Dust collector further comprising a motor case provided to transmit power generated by the blade motor to the blade. According to claim 1,
The first wing portion is a dust collector in which a length is formed to become smaller toward the center of the blade. According to claim 1,
The blade is a dust collector including a blade blocking portion disposed on the other side opposite to one side along the direction of the rotation axis. According to claim 1,
The wing has a difference between a first blade angle formed by a tangent line of the first wing portion with respect to the radial direction of the blade and a second blade angle formed by a tangent line formed by the second wing portion with respect to the radial direction of the blade. A dust collector formed to have. According to claim 1,
The blade is formed such that a blade angle formed by a tangential line of the blade with respect to the radial direction of the blade is greater than 40 °. According to claim 1,
The blade includes a plurality of blades disposed in a circumferential direction of the blade. A body in which a suction motor and a fan are accommodated; and
Including; a dust collector detachably mounted to the main body,
The dust collector,
dust collection case; and
A blade rotatably provided inside the dust collecting case and provided to discharge air introduced through a blade opening formed along the circumference to a blade opening formed on one side along a rotation axis direction; includes,
The blade is a blade formed inclined toward a direction opposite to the direction of rotation of the blade, and includes a wing having a first wing portion and a second wing portion formed to have a different length from the first wing portion. According to claim 12,
An extension pipe communicating with an inlet formed in the dust collecting case; and
The cleaner further comprising a suction head provided to be connectable to the extension pipe. According to claim 12,
The dust collecting case includes a discharge port formed to communicate with the main body. According to claim 14,
The main body includes an exhaust port provided to discharge air introduced into the main body through the outlet to the outside. According to claim 12,
The second wing part is disposed outside the first wing part along the radial direction of the blade, and is formed longer than the first wing part. According to claim 12,
The wing is disposed between the first wing and the second wing and includes a third wing formed shorter than the first wing. According to claim 17,
The dust collector further includes a connection case disposed between the dust collection case and the main body,
The connection case includes a partition wall extending toward the third wing. According to claim 12,
Wherein the first wing portion is formed to be smaller in length toward the center of the blade. According to claim 12,
The blade cleaner includes a blade blocking part disposed on the other side opposite to one side along the direction of the rotation axis.

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