KR102021831B1 - Cleaner - Google Patents

Abstract

Cleaner according to the present invention, the main body for forming a flow path for guiding the air is sucked in and discharged to the outside; A dust separator disposed on the flow path to separate dust from the air; A fan module disposed on the flow path to move air in the flow path; And a speaker, the first function of controlling the output of the speaker to reduce the magnitude of noise in at least some frequency region below 1500 Hz of the noise generated during operation of the fan module; And a noise control module that performs at least one of a second function of controlling the output of the speaker to increase the magnitude of noise in at least some frequency ranges of more than ii2000 Hz but less than 8000 Hz. The main body forms an exhaust port through which air in the flow path is discharged and a sound discharge port through which sound of the speaker is emitted. It further comprises a sound transmitting pipe for connecting the start of the speaker is arranged and the end of the sound emitting port is arranged to transfer the sound of the speaker to the sound emitting port.

Description

Cleaner {Cleaner}

The present invention relates to a noise control apparatus of a cleaner.

The cleaner may be classified into a manual cleaner for cleaning while the user directly moves the cleaner, and a robot cleaner for cleaning while driving by the user. In addition, the manual cleaner may be classified into a canister type cleaner, an upright type cleaner, a handy type cleaner, a stick type cleaner, and the like according to the type of the cleaner.

The cleaner includes an impeller and a suction motor that rotates the impeller to provide a driving force for sucking dust. As the impeller rotates, noise of the cleaner 1 is generated. The noise of the vacuum cleaner 1 includes the noise of a uniform frequency according to the rotation period of the impeller 51.

The noise of the cleaner is generated through the exhaust port, but the exhaust port is a hole through which air is to be discharged, and thus has a limitation in providing a sound insulation structure.

On the other hand, A-weighted decibels (dBA) are often used as data for measuring noise. A-weighted decibels are known to calibrate the sound to a level comparable to that of the human ear.

A first object of the present invention is to control the noise generated during operation of the cleaner without affecting the cleaning performance.

Even though cleaners are being developed to reduce noise but improve the cleaning performance, the user accepts the noise of a cleaner of 2000Hz or more and 8000Hz or less as a feeling of good cleaning, so if the noise is reduced, the cleaning is not well understood. Is frequent. According to the survey, if the noise of 2000Hz or more and less than 8000Hz is technically reduced, the user may feel frustrated that the cleaning is not performed well despite the progress of the cleaning. The 2nd subject of this invention is solving this problem.

Relatively low frequency mechanical sounds of the audible frequencies are known to cause discomfort to the user. The third subject of the present invention is to reduce such low frequency mechanical sound.

The fourth task of the present invention is to ensure that the sound quality according to the preset noise control result does not change according to the position of the user's ear.

The fifth object of the present invention is to induce a destructive interference for noise reduction of the cleaner to be efficiently performed.

The sixth problem of the present invention is to prevent the performance of the speaker provided for the noise control of the cleaner from being affected by the exhaust.

The seventh task of the present invention is to improve space utilization in the product while minimizing the volume or height of the product, while achieving the problems associated with the above noise control.

In order to solve the above problems, the cleaner according to the present invention, the main body for forming a flow path for guiding the air is sucked in and discharged to the outside; A dust separator disposed on the flow path to separate dust from the air; A fan module disposed on the flow path to move air in the flow path; And a speaker, the first function of controlling the output of the speaker to reduce the magnitude of noise in at least some frequency region below 1500 Hz of the noise generated during operation of the fan module; And a noise control module that performs at least one of a second function of controlling the output of the speaker to increase the magnitude of noise in at least some frequency ranges of more than ii2000 Hz but less than 8000 Hz. The main body forms an exhaust port through which air in the flow path is discharged and a sound discharge port through which sound of the speaker is emitted. It further comprises a sound transmitting pipe for connecting the start of the speaker is arranged and the end of the sound emitting port is arranged to transfer the sound of the speaker to the sound emitting port.

The sound transmitting tube may extend longer than the width of the cross section perpendicular to the sound transmitting direction.

The sound transmission pipe may extend longer than a straight distance between the sound emission port and the fan module.

The sound transmission pipe may be provided to switch the direction of sound transmission.

The main sound emission direction of the speaker may be arranged differently from the opposite direction of the sound emission port.

The speaker may be disposed at a position outside the space between the sound emission port and the fan module. At least a part of the sound transmission pipe may pass through a space between the sound emission port and the fan module.

The sound emission port may be formed on an upper surface of the main body. The fan module may be disposed below the sound outlet in the main body.

It may further include a handle coupled to the main body. The speaker may be disposed in the handle.

The handle may include an extension part which protrudes toward the rear side of the main body. The speaker may be disposed in the extension portion.

The exhaust port and the sound emission port may face the same direction with respect to the main body.

Based on the detection signal of the sensing unit, by controlling the output of the speaker to reduce the noise level of at least some of the frequency region of less than 1500Hz of the noise generated during operation of the fan module, providing a more comfortable hearing environment to the user can do.

By controlling the output of the speaker to increase the amount of noise in at least some frequency ranges of 2000 Hz or more and 8000 Hz or less, it is possible to solve a misunderstanding that the user may not be able to clean.

By providing the sound transmitting tube, the above effects can be achieved while minimizing the volume or height of the product.

The sound transmission tube is provided to change the direction of sound transmission, thereby optimizing space utilization in speaker placement in the product, and at the same time preventing interference from other components by the sound transmission tube.

The speaker is disposed at a position outside the space between the sound emitting port and the fan module, thereby reducing the length of the cleaner in the axial direction (O), thereby efficiently reducing the volume of the product.

Further, the sound discharge port is formed on the upper side of the main body, the fan module is disposed below the sound discharge port in the main body, it is possible to efficiently reduce the height of the cleaner. In addition, through this, it is possible to prevent the dust around the cleaner scattered by the air discharged from the exhaust port.

By allowing the exhaust port and the sound outlet to face the same direction with respect to the main body, the noise emitted through the exhaust port and the sound emitted through the sound outlet are synthesized to reach the user's ear. According to the position of the ear, it is possible to reduce a phenomenon in which the ratio of the loudness and the loudness is changed. Accordingly, the sound of the speaker may be combined with the noise of the exhaust port at a ratio preset by the noise control module.

1 is a side elevation view showing a state of use of the cleaner 1 according to an embodiment of the present invention.
2 is a perspective view of the cleaner 1 from which the nozzle module 70 is removed from FIG. 1.
3 is a side elevation view of the cleaner 1 of FIG. 2.
4A is a top elevation view of the cleaner 1 of FIG. 2.
4B is a top elevation view of the cleaner 1 according to another embodiment.
FIG. 5 is a cross-sectional view of the cleaner 1 of FIG. 3 cut horizontally along a line S1-S1 ′.
6A to 6C are cross-sectional views taken vertically along the line S2-S2 'of the cleaner 1 of FIG. 4A. 6A and 6B show different examples related to the position of the sensing unit 81, and FIGS. 6A and 6C show different examples related to the presence or absence of the sound transmitting tube 90.
FIG. 7 is a side elevation view showing a fan module 50 'and air flow in the cleaner 1 according to another embodiment.
8 is a control block diagram of the noise control module 180, 280, and 380 according to embodiments. FIG. 8A shows the noise control modules 180 and 380 according to the first and third embodiments, and FIG. 8B shows the noise control module 280 according to the second embodiment.
FIG. 9 is graphs E0 and E1 according to an experimental example, in which noise level (dBA: A−) measured by frequency (freq.) Measured outside the cleaner 1 in the state in which the noise control module 80 is not operated. A graph E0 indicating a weighted decibel and a magnitude dBA of noise by frequency Freq. Measured outside the cleaner 1 according to the operation of the noise control module 180 according to the first embodiment. It is a graph E1.
FIG. 10 is graphs E0 and E3 according to an experimental example, and shows the magnitude dBA of noise by frequency Freq. Measured outside the cleaner 1 in the state in which the noise control module 80 is not operated. A graph E0 representing a graph E0 and a magnitude EBA of noise by frequency freq measured outside the cleaner 1 according to the operation of the noise control module 380 according to the third embodiment. to be.
In order to distinguish one embodiment from another embodiment of the present invention, a comma (') may be displayed after a reference numeral of a part that is different from one embodiment as a component according to another embodiment.

In order to explain the present invention, the following description will be made based on a spatial rectangular coordinate system formed by X, Y and Z axes that are orthogonal to each other. Each axis direction (X-axis direction, Y-axis direction, Z-axis direction) means both directions which each axis extends. The symbol "+" in front of each axis direction (+ X-axis direction, + Y-axis direction, + Z-axis direction) means the positive direction which is either of the directions in which each axis extends. The sign "-" in front of each axis direction (-X-axis direction, -Y-axis direction, -Z-axis direction) means the negative direction which is the other direction of both directions which each axis extends.

The expressions referring to the following directions “before (+ Y) / after (-Y) / left (+ X) / right (-X) / upper (+ Z) / lower (-Z)” are XYZ. Although defined according to the coordinate axis, this is for the purpose of describing the present invention so that the present invention can be clearly understood to the last, and each direction may be defined differently according to where the reference is placed.

The use of the terms 'first, second, third', etc. in front of the components mentioned below is only to avoid confusion of the components to be referred to, and the order, importance or main relationship between the components, etc. Is irrelevant. For example, an invention including only the second component without the first component may be implemented.

As used herein, the singular forms "a", "an" and "the" include plural forms unless the context clearly indicates otherwise.

The cleaner according to the present invention may be a manual cleaner or a robot cleaner. Hereinafter, the cleaner 1 according to the present embodiment will be described as a handy manual cleaner, but the cleaner according to the present invention does not need to be limited thereto.

1 to 7, the cleaner 1 according to an embodiment includes a main body 10 that forms a flow path P for guiding the sucked air to be discharged to the outside. The cleaner 1 includes a dust separator 20 disposed on the flow path P to separate dust from the air. The cleaner 1 includes a handle 30 coupled to the rear side of the main body 10. The cleaner 1 includes a battery Bt for supplying power and a battery housing 40 in which the battery Bt is accommodated. The cleaner 1 includes fan modules 50 and 50 ′ disposed on the flow path P to move air in the flow path. The cleaner 1 includes filters 61 and 62 disposed on the flow path P in addition to the dust separator 20 to separate dust from the air. The cleaner 1 includes a nozzle module 70 detachably connected to the suction part 11 of the main body 10. The cleaner 1 includes an input unit 3 through which the user can input an on / off or suction mode of the cleaner 1, and an output unit 4 which displays various states of the cleaner 1 to the user. .

The cleaner 1 performs at least one of a first function of reducing the level of noise in a relatively low frequency region among the audible frequencies, and a second function of increasing the level of noise in a relatively high frequency region among an audible frequency. Noise control module 80, 80 ', 180, 280, 380, 980. The noise control module includes speakers 89 and 989 for outputting sound. According to an embodiment, the cleaner 1 may further include a sound transmission pipe 90 for transmitting the sounds of the speakers 89 and 989 to the sound emission ports 10b and 10b '.

Referring to FIG. 1, the nozzle module 70 includes a nozzle unit 71 provided to suck external air, and an extension tube 73 extending from the nozzle unit 71. Extension tube 73 connects the nozzle portion 71 and the suction portion (11). The extension tube 73 guides the air sucked from the nozzle unit 71 to flow into the suction flow path P1. One end of the extension tube 73 may be detachably coupled to the suction part 11 of the main body 10. The user can grab the handle 30 in the state in which the nozzle part 71 is placed on the floor and clean it while moving the nozzle part 71.

2 to 7, the main body 10 forms an appearance of the cleaner 1. The main body 10 may be formed in a long cylindrical shape as a whole. The dust separator 20 is accommodated in the main body 10. The fan modules 50 and 50 ′ are accommodated in the main body 10. The handle 30 is coupled to the rear side of the main body 10. The battery housing 40 is coupled to the rear side of the main body 10.

The main body 10 includes a suction unit 11 for guiding suction of air into the main body 10. The suction part 11 forms the suction flow path P1. The suction part 11 may protrude forward of the main body 10.

The main body 10 includes discharge covers 12, 12 ′ which form exhaust ports 10 a, 10 a ′. The discharge covers 12, 12 'may further define sound outlets 10b, 10b'. Discharge cover 12, 12 ′ may form an upper surface of main body 10. Discharge cover 12, 12 ′ covers the upper portion of fan module housing 14.

The main body 10 includes a dust collector 13 for storing the dust separated from the dust separator 20. At least a part of the dust separator 20 may be disposed in the dust collector 13. The inner surface of the upper portion of the dust collecting unit 13 may perform a function of the first cyclone unit 21 to be described later. (In this case, the upper part of the dust collecting part 13 may be referred to as the first cyclone part 21.) The second cyclone part 22 and the dust flow guide 24 inside the dust collecting part 13. Is placed.

The dust collector 13 may be formed in a cylindrical shape. The dust collector 13 is disposed under the fan module housing 14. Dust storage spaces S1 and S2 are formed in the dust collection unit 13. The first storage space S1 is formed between the dust collector 13 and the dust flow guide 24. The second storage space S2 is formed inside the dust flow guide 24.

The main body 10 includes a fan module housing 14 that houses the fan modules 50, 50 ′ therein. The fan module housing 14 may be formed to extend upward from the dust collecting unit 13. The fan module housing 14 is formed in a cylindrical shape. An extension 31 of the handle 30 is disposed at the rear side of the fan module housing 14.

The main body 10 includes a dust cover 15 provided to open and close the dust collector 13. The dust cover 15 may be rotatably coupled to the lower side of the dust collector 13. The dust cover 15 may open and close the lower side of the dust collecting unit 13 by a rotation operation. The dust cover 15 may include a hinge (not shown) for rotation. The hinge may be coupled to the dust collector 13. The dust cover 15 may open and close the first storage space S1 and the second storage space S2 together.

The main body 10 includes an air guide 16 for guiding the air flowing out of the dust separation unit 20. The air guide 16 forms fan module flow paths P4 and P4 'for guiding air from the dust separation unit 20 to the impellers 51 and 51'. The air guide 16 includes exhaust flow paths P5 and P5 'for guiding the air passing through the impellers 51 and 51' to the exhaust ports 10a and 10a '. The air guide 16 may be disposed in the fan module housing 14.

For example, referring to FIGS. 6A to 6C, the air guide 16 may move up through the impeller 51 while descending the air flowing out of the dust separation unit 20, and then down to the exhaust ports 10a and 10a ′. The flow paths P4 and P5 can be formed to rise.

As another example, referring to FIG. 7, the air guide 16 includes a flow path P4 ′ such that air flowing out of the dust separation unit 20 passes through the impeller 51 and continues to rise to the exhaust ports 10a and 10a '. , P5 ').

2, 4A, 4B, and 6A to 6C, the main body 10 includes exhaust ports 10a and 10a ′ through which air in the flow path P is discharged to the outside of the main body 10. ). The exhaust openings 10a and 10a 'may be formed in the discharge covers 12 and 12'.

The exhaust ports 10a and 10a 'may be formed on the upper side of the main body 10. Through this, the dust around the cleaner is prevented from being scattered by the air discharged from the exhaust ports 10a and 10a ', and the air discharged from the exhaust ports 10a and 10a' can be prevented from directly hitting the user. have.

The exhaust ports 10a and 10a 'may be arranged to face a specific direction (eg, upward direction). The discharge direction Ae of the air discharged through the exhaust ports 10a and 10a 'may be the specific direction.

In the present description, the predetermined axis O means a virtual axis that extends in the specific direction and crosses the central portion of the main body 10. The 'central direction' means a direction away from the axis (O), the 'opposite direction' means a direction closer to the axis (O). In addition, the "circumferential direction" means a circumferential direction (or rotation direction) about the axis (O). The circumferential direction is meant to encompass a clockwise direction and a counterclockwise direction.

The discharge direction Ae of the air may be a direction between the specific direction and the centrifugal direction. The discharge direction Ae of the air may be a direction between the specific direction and the circumferential direction. Specifically, the air discharge direction Ae may be a direction between the specific direction and the counterclockwise direction. The air discharge direction Ae may be a direction in which the specific direction, the centrifugal direction, and the circumferential direction are synthesized three-dimensionally.

The exhaust ports 10a and 10a 'may be arranged to surround the shaft O. The exhaust ports 10a and 10a 'may be arranged or extended along the circumferential direction. The exhaust ports 10a and 10a 'may be disposed in the predetermined peripheral regions B1 and B1' extending beyond the center angle 180 degrees along the circumferential direction about the predetermined axis O.

For example, referring to FIG. 4A, the peripheral area B1 extends about 360 degrees along the circumferential direction about the axis O. FIG. In other words, the peripheral area B1 completely surrounds the circumference of the axis O. FIG.

As another example, referring to FIG. 4B, the peripheral area B1 ′ extends around the axis O by the center angle Ag1 along the circumferential direction. Here, the center angle Ag1 may be a value of 270 degrees or more and less than 360 degrees. In FIG. 4A, the center angle Ag1 is about 270 degrees.

Meanwhile, referring to FIG. 4B, the direction in which the peripheral area B1 ′ is not enclosed with respect to the axis O may be a direction in which the handle 30 is disposed (rear). In order to prevent the air discharged from the exhaust port 10a 'from flowing to the user side, an exhaust port 10a' may not be formed in an area between the shaft O and the handle 30. In the region between the shaft O and the handle 30, a barrier 12b 'may be provided to block air discharge. As a result, the air discharged from the exhaust port 10a 'may not be directly hit by the user holding the handle 30.

The exhaust ports 10a and 10a 'may be arranged along the circumferential direction in the peripheral areas B1 and B1', i) extending along the circumferential direction or divided into ii plural.

For example, referring to FIG. 4A, a plurality of exhaust ports 10a are arranged along the peripheral area B1. The plurality of exhaust ports 10a are divided with each other in the circumferential direction by the plurality of exhaust guides 12a. The plurality of exhaust ports 10a may be arranged spaced apart from each other along the circumferential direction.

As another example, referring to FIG. 4B, the exhaust port 10a ′ extends along the peripheral area B1 ′. The plurality of exhaust ports 10a 'may be spaced apart from each other along the centrifugal direction. The plurality of exhaust ports 10a 'are divided with each other in the centrifugal direction by the exhaust guide 12a'. Each exhaust port 10a 'may extend in the circumferential direction by the center angle Ag1 about the axis O.

The main body 10 includes exhaust guides 12a and 12a 'provided to discharge air discharged through the exhaust ports 10a and 10a' in an inclined direction with respect to the axis O. The exhaust guides 12a and 12a 'may be disposed to be inclined with respect to the axis O. The discharge covers 12 and 12 'may include exhaust guides 12a and 12a' for dividing the exhaust ports 10a and 10a 'into a plurality.

For example, referring to FIG. 4A, the discharge cover 12 includes a plurality of exhaust guides 12a for dividing the exhaust ports 10a into a plurality. The plurality of exhaust guides 12a are arranged spaced apart along the circumferential direction. Each exhaust guide 12a extends in the direction between the circumferential direction and the centrifugal direction and divides two adjacent exhaust ports 10a. The spaced space between two adjacent exhaust guides 12a becomes the exhaust port 10a. The exhaust guide 12a induces air to be discharged in a direction in which the specific direction, the centrifugal direction, and the circumferential direction are three-dimensionally synthesized.

As another example, referring to FIG. 4B, the exhaust cover 12 ′ includes one exhaust guide 12 a ′ that divides the exhaust port 10 a ′ into two. The exhaust guide 12a 'extends long along the circumferential direction. The exhaust guide 12a 'extends in the circumferential direction by the center angle Ag1 about the axis O from one end to the other end of the barrier 12b'. The exhaust guide 12a 'guides the air to be discharged in the direction in which the specific direction and the centrifugal direction are combined.

2, 4A, 4B, and 6A to 6C, the main body 10 forms sound emission ports 10b and 10b 'through which sound of the speakers 89 and 989 is emitted. . Sound outlets 10b and 10b 'may be formed in discharge covers 12 and 12'.

The sound emission ports 10b and 10b 'may be formed on the upper surface of the main body 10. The sound emission ports 10b and 10b 'may be arranged to face the specific direction (eg, upward direction). The emission direction Se of the sound emitted through the sound emission ports 10b and 10b 'becomes the specific direction.

Sound emission ports 10b and 10b 'are preferably provided separately from exhaust ports 10a and 10a'. Through this, it is possible to prevent the influence of air or dust moving in the flow path (P) on the performance of the speakers (89, 989).

It is preferable that the exhaust ports 10a and 10a 'and the sound emission ports 10b and 10b' face the same direction with respect to the main body 10. As a result, the noise emitted through the exhaust ports 10a and 10a 'and the sound emitted through the sound emitting ports 10b and 10b' are synthesized to reach the user's ear, and thus the magnitude of the noise according to the position of the user's ear. And a phenomenon in which the ratio of the volume of the sound is changed can be reduced, and the sound can be synthesized with the noise at a predetermined ratio.

The sound discharge ports 10b and 10b 'may be disposed at the center of the discharge cover 12 and 12'. The sound emitting ports 10b and 10b 'may be disposed in a direction opposite to the centrifugal direction of the peripheral areas B1 and B1' with respect to the axis O. The sound emitting ports 10b and 10b 'may be disposed at the center portion through which the shaft O passes. The sound emission ports 10b and 10b 'may be disposed in a predetermined central area B2 spaced apart from the peripheral areas B1 and B1' in the direction opposite to the centrifugal and through which the axis O passes. As a result, the sound generating area by the central sound emitting ports 10b and 10b 'of the noise generating area by the exhaust ports 10a and 10a' can be provided, and the noise and the speaker 89 by the exhaust ports 10a and 10a '. 989) may cause destructive interference or constructive interference as preset. This is particularly effective in canceling the low frequency range of the generated noise by the sound of 180 degrees out of phase of the speakers 89 and 989 (offset interference).

For example, referring to FIG. 2, the sound emission opening 10b may include a plurality of holes formed to be spaced apart from each other in the center area B2.

As another example, referring to FIG. 4B, a mesh-type structure is disposed in the center area B2, and a large number of holes formed by the mesh-type structure may perform the function of the sound emission port 10b. Can be.

As another example, referring to FIG. 4B, the sound emission port 10b ′ may include a gap extending in the circumferential direction about the axis O in the center area B2. Specifically, the sound discharge port 10b 'may include a ring-shaped gap.

5 to 6C, the dust separation unit 20 performs a function of filtering dust on the flow path P. Referring to FIG. The dust separator 20 separates dust sucked into the main body 10 through the suction unit 11 from the air.

For example, the dust separation unit 20 may include a first cyclone unit 21 and a second cyclone unit 22 capable of separating dust by cyclone flow. The flow path P2 formed by the first cyclone part 21 may be connected to the flow path P1 formed by the suction part 11. Air and dust sucked through the suction part 11 are helically flowed along the inner circumferential surface of the first cyclone part 21. The axis A2 of the cyclone flow of the first cyclone portion 21 may extend in the vertical direction. The axis A2 of the cyclone flow can coincide with the axis O. The second cyclone portion 22 further separates dust from air passing through the first cyclone portion 21. The second cyclone portion 22 may be located inside the first cyclone portion 21. The second cyclone portion 22 may be located inside the boundary 23. The second cyclone portion 22 may include a plurality of cyclone bodies arranged in parallel.

As another example, the dust separator 20 may have a single cyclone portion. Even in this case, the axis A2 of the cyclone flow may extend in the vertical direction.

As another example, the dust separation unit 20 may include a main filter unit (not shown) instead of the cyclone unit. The main filter unit may separate dust from the air introduced from the suction unit 11.

Hereinafter, the dust separation unit 20 will be described based on the present embodiment including the first cyclone unit 110 and the second cyclone unit 130, but is not necessarily limited thereto.

The dust separation unit 20 forms dust separation flow paths P2 and P3. Air moves the dust separation passages P2 and P3 at high speed, and dust in the air is separated, and the separated dust is stored in the first storage space S1.

The space between the inner circumferential surface of the first cyclone portion 21 and the outer circumferential surface of the boundary portion 23 becomes the first cyclone flow path P2. The air passing through the suction flow path P1 moves in the descending spiral direction from the first cyclone flow path P2, and dust in the air is centrifuged. Here, the axis A2 becomes the axis A2 of the flow in the downward spiral direction.

The dust separation unit 20 includes a boundary portion 23 disposed in a cylindrical shape in the first cyclone portion 21. The boundary portion 23 forms a plurality of holes in the outer circumferential surface. Air in the first cyclone flow path P2 may be introduced into the second cyclone flow path P3 through the plurality of holes of the boundary portion 23. Bulky dust can also be filtered out by a plurality of holes in the boundary 23.

The upper portion of the second cyclone portion 22 is disposed inside the boundary portion 23. The second cyclone portion 22 includes a plurality of cyclone bodies which are hollowed and penetrated vertically. Each cyclone body may be formed in a pipe shape tapering downward. The second cyclone flow path P3 is formed inside each cyclone body. The air passing through the boundary 23 moves to the second cyclone flow path P3 along a guide for inducing air flow in a downward spiral direction disposed at an upper portion of the cyclone body. The air moves downward along the inner circumferential surface of the cyclone body, the dust in the air is centrifuged, and the separated air is stored in the second storage space S2. Air moved to the lower side of the cyclone body along the second cyclone flow path P3 moves upwardly along the vertical axis of the second cyclone flow path P3 and moves upwards, and the fan module flow paths P4 and P4. Flows into ').

The dust separator 20 includes a dust flow guide 24 that separates the first storage space S1 from the second storage space S2 in the dust collecting unit 13. The space between the dust flow guide 24 and the inner side surface of the dust collector 13 is the first storage space S1. The inner space of the dust flow guide 24 is the second storage space S2.

The dust flow guide 24 is coupled to the lower side of the second cyclone portion 22. The dust flow guide 24 is in contact with the upper surface of the dust cover 15. A portion of the dust flow guide 24 may be formed to decrease in diameter from the upper side to the lower side. For example, the upper portion of the dust flow guide 24 may be formed to decrease in diameter toward the lower side, and the lower portion of the dust flow guide 24 may be formed in a cylindrical shape extending upward and downward.

The dust separator 20 may include a scattering prevention rib 25 extending downward from the upper end of the dust flow guide 24. The upper portion of the dust flow guide 24 may be wrapped around. The shatterproof ribs 25 may extend along the circumferential direction about the axis A2 of the flow. For example, the scattering prevention ribs 25 may be formed in a cylindrical shape.

When the upper portion of the dust flow guide 24 is formed to decrease in diameter toward the lower side, a space is formed between the outer circumferential surface of the upper portion of the dust flow guide 24 and the scattering prevention ribs 25. When an upward flow of air occurs along the dust flow guide 24 in the first storage space S1, the air flows up by the space between the scattering prevention ribs 25 and the upper portion of the dust flow guide 24. You get dust. Through this, the dust in the first storage space (S1) can be prevented from flowing back upward.

The handle 30 is coupled to the main body 10. The handle 30 may be coupled to the rear side of the main body 10. The handle 30 may be coupled to an upper side of the battery housing 40.

The handle 30 includes an extension 31 which protrudes rearward from the main body 10 and extends. The extension 31 may extend forwardly from the upper side of the further extension 32. The extension part 31 may extend in the horizontal direction. In Example B to be described later, the speaker 989 is disposed inside the extension part 31.

The handle 30 extends in the vertical direction and includes an additional extension 32. The additional extension 32 may be spaced apart from the main body 10 in the front-rear direction. The user can use the cleaner 1 by holding the additional extension 32. The upper end of the further extension 32 is connected to the rear end of the extension 31. The lower end of the further extension 32 is connected to the battery housing 40.

The additional extension part 32 includes a movement limiting part 32a for preventing a hand from moving in the longitudinal direction (up and down direction) of the additional extension part 32 while the user holds the additional extension part 32. ) May be provided. The movement limiting portion 32a may protrude forward from the further extension portion 32.

The movement limiting portion 32a is disposed to be spaced apart from the extension portion 31 vertically. In a state in which the user grips the additional extension part 32, some fingers of the user's gripped hand are positioned above the movement limiting part 32a, and other fingers are positioned below the movement limiting part 32a. do.

The handle 30 may include an inclined surface 33 looking in the direction between the upper side and the rear side. The inclined surface 33 may be located at the rear side of the extension 31. The input unit 3 may be disposed on the inclined surface 33.

The battery Bt may supply power to the fan modules 50 and 50 '. The battery Bt may supply power to the noise control module. The battery Bt may be detachably disposed inside the battery housing 40.

The battery housing 40 is coupled to the rear side of the main body 10. The battery housing 40 is disposed below the handle 30. The battery Bt is accommodated in the battery housing 40. A heat dissipation hole may be formed in the battery housing 40 to discharge heat generated from the battery Bt to the outside.

Referring to FIGS. 6A to 7, the fan modules 50 and 50 ′ generate a suction force so that external air flows into the flow path P. FIG. The fan modules 50, 50 ′ are disposed in the main body 10. The fan modules 50 and 50 'are disposed below the sound outlets 10b and 10b'. The fan modules 50 and 50 'are disposed above the dust separator 20.

The fan modules 50 and 50 'include impellers 51 and 51' that generate a suction force by rotation. The impellers 51 and 51 'pressurize the air so that the air in the flow path P is discharged through the exhaust ports 10a and 10a'. Noise and vibration occur when the impellers 51 and 51 'pressurize air, which is mainly emitted through the exhaust ports 10a and 10a'.

An extension line of the rotation axis A1 (also referred to as the axis of the suction motor) of the impellers 51, 51 ′ may coincide with the axis A2 of the flow.

In addition, the rotation axis A1 may coincide with the axis O. In this case, the impellers 51 and 51 'rotate about the axis O to pressurize air. As a result, noise may be relatively evenly emitted through the exhaust ports 10a and 10a 'formed in the peripheral areas B1 and B1'.

The fan module 50, 50 ′ includes suction motors 52, 52 ′ for rotating the impeller 51. The suction motors 52, 52 ′ may be the only motors of the cleaner 1. The suction motors 52 and 52 ′ may be positioned above the dust separator 20. Noise and vibration occur when the intake motors 52, 52 'operate, and this noise is mainly emitted through the exhaust ports 10a, 10a'.

For example, referring to FIGS. 6A to 6C, a fan module 50 having an impeller 51 disposed below the suction motor 52 may be provided. The impeller 51 pressurizes the air in the upward direction during rotation.

As another example, referring to FIG. 7, a fan module 50 ′ in which an impeller 51 ′ is disposed below the suction motor 52 ′ may be provided. The impeller 51 'presses the air downward when rotated.

The fan module 50, 50 ′ may include a shaft 53 fixed to the center of the impellers 51, 51 ′. The shaft 53 is disposed to extend in the vertical direction on the rotation axis A1. The shaft 53 may function as a motor shaft of the suction motor 52.

Meanwhile, the cleaner 1 may include a PCB 55 for controlling the suction motors 52 and 52 '. The PC 55 may be disposed between the suction motor 52 and the dust separator 20.

6A to 6C, the cleaner 1 may include a pre-filter 61 for filtering the air before the air is sucked into the suction motors 52 and 52 ′. The prefilter 61 may be disposed to surround the impeller 51. Air on the fan module flow paths P4 and P4 'passes through the prefilter 61 to reach the impeller 51. The prefilter 61 is disposed inside the main body 10. The prefilter 61 is disposed below the discharge cover 12, 12 ′. The user can pull out the pre-filter 61 from the inside of the main body 10 by separating the discharge covers 12 and 12 'from the cleaner 1.

6A to 6C, the cleaner 1 may include a HEPA filter 62 that filters the air before the air is discharged to the exhaust ports 10a and 10a '. The air passing through the impellers 51 and 51 ′ may pass through the HEPA filter 62, and then may be discharged to the outside through the exhaust port 10a. The HEPA filter 62 is disposed on the exhaust flow path P5.

The discharge cover 12, 12 ′ may form a filter accommodation space (not shown) for accommodating the HEPA filter 62. The filter accommodating space is formed such that a lower side thereof is opened so that the HEPA filter 62 may be accommodated in the filter accommodating space under the discharge covers 12 and 12 ′.

An exhaust port 10a may be formed to face the HEPA filter 62. A hepa filter 62 is disposed below the exhaust ports 10a and 10a '. The HEPA filter 62 may be disposed to extend in the circumferential direction along the exhaust ports 10a and 10a '.

The main body 10 includes a filter cover 17 covering the lower side of the HEPA filter 62. In the state where the HEPA filter 62 is accommodated in the filter accommodation space, the lower side of the HEPA filter 62 is covered by the filter cover 17, and the air on the exhaust passage P5 passes through the filter cover 17. Holes for forming are formed. The filter cover 17 may be detachably coupled to the discharge covers 12 and 12 '.

The discharge cover 12, 12 ′ may be detachably coupled to the fan module housing 14. When the filter cover 17 is separated from the discharge cover 12, 12 ′ in the discharge cover 12, 12 ′ separated from the fan module housing 14, the HEPA filter 62 is separated from the filter accommodation space. Can be withdrawn from

Although the cleaner 1 is described as including the pre-filter 61 and the HEPA filter 62 in the present invention, the type and number of filters are not limited.

On the other hand, the input unit 3 may be located opposite to the movement limiting unit 32a with respect to the handle 30. The input unit 3 may be disposed on the inclined surface 33.

In addition, the output part 4 may be disposed in the extension part 31. As an example, the output unit 4 may be located on an upper surface of the extension unit 31. The output unit 4 may include a plurality of light emitting units. The plurality of light emitting parts may be arranged to be spaced apart in the longitudinal direction (front and rear direction) of the extension part 31.

Meanwhile, referring to FIGS. 5 to 7, the flow path P may include the suction flow path P1, the dust separation flow paths P2 and P3, the fan module flow paths P4 and P4 ′ and the exhaust flow path ( P5 and P5 ') are formed by sequentially connecting.

Air and dust sucked through the suction flow path P1 by the operation of the suction motors 52 and 52 'flow in the first cyclone flow path P2 and the second cyclone flow path P3 and are separated from each other. do. In the second cyclone flow path P3, air moves upward as described above, and flows into the fan module flow paths P4 and P4 ′. The fan module flow paths P4 and P4 'guide air to the prefilter 61 side. Air which has passed through the prefilter 61 and the impeller 51 sequentially flows into the said exhaust flow paths P5 and P5 '. The air on the exhaust flow paths P5 and P5 'is discharged to the outside through the exhaust ports 10a and 10a' after passing through the HEPA filter 62.

For example, referring to FIGS. 6A to 6C, the fan module flow path P4 guides the air so that the air flowing out from the dust separation unit 20 rises and descends through the impeller 51. Here, the exhaust flow path (P5) is guided through the impeller 51, so that the lowered air rises up to the exhaust ports (10a, 10a ').

As another example, referring to FIG. 7, the fan module flow path P4 ′ guides the air so that the air flowing out of the dust separation unit 20 continuously rises through the impeller 51. Here, the exhaust passage (P5 ') guides the air so that the air rising through the impeller 51 continuously rises to the exhaust ports (10a, 10a').

Hereinafter, the noise control module 80, 80 ′, 180, 280, 380, and 980 will be described with reference to FIGS. 6A to 6C and 8 to 10. The noise control module may reduce noise emitted to the exhaust ports 10a and 10a 'or control sound quality of the noise. The noise control module includes speakers 89 and 989 for outputting sound.

The noise control module is configured to reduce the loudness of the noise in at least some frequency region of 1500 Hz or less among the noises generated when the fan modules 50 and 50 'are operated when the fan modules 50 and 50' are operated. At least one of a first function of controlling the output of (89, 989), and a second function of controlling the output of the speakers (89, 989) to increase the magnitude of noise in at least some frequency ranges from ii2000 Hz to less than 8000 Hz. Do this.

Here, the noise control module 180 according to the first embodiment performing only the first function of the first function and the second function, and performing only the second function of the first function and the second function The noise control module 280 according to the second embodiment and the noise control module 380 according to the third embodiment performing both the first function and the second function will be described separately.

The noise control module 180 according to the first embodiment controls to reduce the low frequency range of the noise emitted from the exhaust ports 10a and 10a '. The noise control module 180 is based on the detection signal of the detection unit 81, 81 ', the noise of at least some of the frequency region of 1500Hz or less of the noise generated during operation of the fan module 50, 50'. The output of speakers 89 and 989 is controlled to reduce the size. The noise control module 180 controls the noise of the partial frequency region below 1500 Hz to be canceled out of the noise emitted from the exhaust port through the outputs of the speakers 89 and 989. By the sound output from the loudspeakers 89 and 989 of the noise control module 180, the average dBA of the noise of 1500 Hz or less generated during operation of the fan module is reduced. Through this, it is possible to reduce the low-end machine sound that causes discomfort to the user.

When the impeller 51 of the fan module 50, 50 'rotates at a constant speed, a relatively constant level of noise occurs. When the sound of the frequency by which the frequency of the noise by the impeller 51 is phase shifted 180 degrees is generated, the noise of the impeller 51 and the generated noise cancel each other, and the magnitude of the overall noise is reduced.

The noise control module 180 includes detectors 81 and 81 ′ that detect noise or vibration. The detectors 81 and 81 'sense the frequency of noise or vibration of the suction motors 52 and 52'.

For example, the sensing units 81 and 81 ′ may include a microphone that senses noise of the fan modules 50 and 50 ′.

As another example, the sensing units 81 and 81 ′ may include an acceleration sensor that senses vibrations of the fan modules 50 and 50 ′. The frequency of the noise may be indirectly recognized based on the frequency of the vibration sensed by the acceleration sensor, and the acceleration sensor may replace the microphone.

The sensing units 81 and 81 ′ are disposed in the main body 10.

For example, referring to FIG. 6A, the sensing unit 81 may be disposed inside the main body 10. The sensing unit 81 may be disposed inside the fan module housing. The sensing unit 81 may be disposed in the flow path P. FIG. The detector 81 may be disposed in the exhaust flow path P5. In this case, the sensing unit 81 is preferably a microphone. 6A shows a noise control module 80 including the detector 81.

As another example, referring to FIG. 6B, the sensing unit 81 ′ may be disposed outside the main body 10. The detector 81 ′ may be disposed outside the exhaust ports 10a and 10a ′. The detector 81 ′ may be disposed between the exhaust ports 10a and 10a ′ and the sound emission ports 10b and 10b ′. In this case, the sensing unit 81 'is preferably a microphone. 6A shows a noise control module 80 ′ including the detector 81 ′.

As another example, although not shown, the sensing unit may be disposed in the fan modules 50 and 50 '. The sensing unit may be disposed in the suction motors 52 and 52 '. In this case, the sensing unit is preferably an acceleration sensor.

Referring to FIG. 8A, the noise control module 180 may include a first amplifier 82 and a first low pass filter 83 which sequentially process signals detected by the detectors 81 and 81 ′. And an analog-to-digital converter 84, a signal processor 85, a digital-to-analog converter (DAC) 86, a second amplifier 87, and a second low pass filter 88.

The noise control module 180 processes the sensing signals of the sensing units 81 and 81 ′ to control the output of the speakers 89 and 989. -2 embodiments, 1-3 embodiments).

In the embodiment 1-1, the noise control module 180 changes the phase of the signal (reduction target signal) of at least a portion of the frequency region of 1500 Hz or less among the signals detected by the detectors 81 and 81 'to output the speaker 89. 989). At this time, the sensing signals of the sensing units 81 and 81 'include the frequency of the noise of the fan modules 50 and 50' or the frequency of the vibration of the fan modules 50 and 50 '. For example, the noise control module 180 may change the frequency of the reduction target signal by 180 degrees to control the output of the speakers 89 and 989.

In the embodiment 1-1, the sensing units 81 and 81 'may be disposed on the downstream side of the fan module and the upstream side of the exhaust port of the flow path P. Through this, the noise frequencies of the fan modules 50 and 50 'emitted to the exhaust ports 10a and 10a' may be sensed. As another example, the sensing units 81 and 81 'may be disposed on the suction motors 52 and 52' to sense vibration frequencies of the fan modules 50 and 50 '.

Referring to FIG. 8A, in the 1-1 embodiment, the amplifier 82 amplifies the signals sensed by the detectors 81 and 81 '. The first low pass filter (LPF) 83 passes only a predetermined low band signal among the signals amplified by the amplifier 82. Here, the low pass filter 83 may pass a signal sensed by the detectors 81 and 81 ′ at a low pass based on a predetermined value of 1500 Hz or less. For example, the predetermined value may be a specific value between about 1300 Hz and 1500 Hz. An analog-to-digital converter (ADC) 84 converts the low pass signal passed by the low pass filter 83 into a digital signal. The signal processor 85 generates a control signal having a 180 ° phase difference from the signals sensed by the detectors 81 and 81 'based on the digital signal converted by the analog-to-digital converter 84. That is, the signal processor 85 may generate an antiphase control signal for the detection signal. The signal processor 85 may include a digital signal processor. The signal processor 85 may include an active noise control filter (ANC filter). A digital-analog coverter (DAC) 86 converts a digital control signal output from the signal processor 85 into an analog signal. The amplifier 87 amplifies the analog signal converted by the digital-to-analog converter 86. A second low pass filter (LPF) 88 filters the signal amplified by the amplifier 87 to pass the low pass. The second low pass filter 88 may perform a function of smoothing a control signal converted into an analog signal. The speaker 89 outputs the signal filtered by the second low pass filter 88.

In one or two embodiments, the detectors 81 and 81 'include a microphone for detecting noise. The noise control module 180 receives the signals sensed by the microphones 81 and 81 ′ and controls the output of the speakers 89 and 989. In this case, the microphone 81 'is preferably disposed outside the exhaust ports 10a and 10a'. More preferably, the microphone 81 'may be disposed between the exhaust ports 10a and 10a' and the sound emitting ports 10b and 10b '. In this way, the synthesized signal of the output sound of the loudspeakers 89 and 989 and the sound emitted through the exhaust ports 10a and 10a 'is sensed and fed back based on the synthesized signal to control the output of the loudspeakers 89 and 989. can do. This is a feedback method through an error detection microphone. This method senses the output value of the synthesized signal and conversely controls the output of the speaker. Here, too, components 81 ', 82, 83, 84, 85, 86, 87, 88, and 89 as shown in FIG. 8A sequentially process the signal. However, in this case, the signal processor 85 receives the feedback of the detection signal and changes the control signal to output the control signal, thereby controlling the detection signal to be a target value.

In the 1-3 embodiments, the sensing units 81 and 81 'include two microphones. The first microphone 81 may be disposed on the exhaust flow path P5, and the second microphone 81 ′ may be disposed outside the exhaust ports 10a and 10a ′. As described above with reference to FIG. 8A, the signals sensed by the respective microphones 81, 81 ′ pass through an amplifier 82, a first low pass filter 83, and an analog-to-digital converter 84, respectively. It is input to the signal processor 85. The signal processor 85 may generate a control signal by changing a phase of the detection signal by the first microphone 81, and may receive feedback based on the detection signal by the second microphone 81 ′. The control signal generated by the signal processor 85 passes through the above-described components 86, 87, and 88, whereby sound output of the speakers 89 and 989 is performed.

9 is data experimentally confirming that the magnitude of the noise of 1500 Hz or less is reduced among the noises generated during the operation of the fan modules 50 and 50 ′ according to the operation of the noise control module 180. The peak value of the region of 1500 Hz or less among the noises observed in the non-operation state (E0) of the noise control module decreases by d value (dBA) in the state in which the noise control module 180 operates (E1). It is confirmed. Graphs E0 and E1 are logarithmic scales, where the peak value plays a major role in the overall noise level in the frequency region below 1500 Hz, with a decrease of d of the peak value being a substantial of the average noise level in the frequency region below 1500 Hz. Results in a decrease.

The noise control module 280 according to the second embodiment controls to add an additional sound to the high frequency region of the noise emitted from the exhaust ports 10a and 10a '. The noise control module 280 controls the outputs of the speakers 89 and 989 to increase the magnitude of noise in at least some frequency ranges of 2000 Hz to 8000 Hz when the fan modules 50 and 50 ′ are operated. do. The noise control module 280 controls the speaker to increase the average size of the noise of 2000 Hz or more and 8000 Hz or less. Since the user accepts the noise of the cleaner of 2000Hz or more and 8000Hz or less as a good feeling of cleaning, if the noise is technically small and implements such noise of 2000Hz or more and 8000Hz or less, it is frustrating that the cleaning is not well performed. Will feel. Therefore, by adding noise in this frequency range, it is possible to solve the misunderstanding that the user may not be cleaning well.

The noise control module 280 does not need to include the sensing unit. In addition, the noise control module 280, the signal processing components implemented as shown in Figure 8 (a) of the first embodiment is unnecessary.

The noise control module 280 may control the speaker to emit specific pre-stored sounds when the fan modules 50 and 50 ′ are operated.

Referring to FIG. 8 (b), the noise control module 280 may be sufficient as a configuration of the speaker controller 285 that merely controls on / off. The speaker controller 285 may store the specific sound file. The speaker controller 285 may adjust the intensity of the output of the speakers 89 and 989.

The specific sound is a sound in a specific frequency region of 2000 Hz to 8000 Hz. Through experiments with a plurality of users, the specific sound may be preset as a sound that enhances the cleaning feeling.

The noise control module 380 according to the third embodiment reduces the low frequency range of the noise emitted from the exhaust ports 10a and 10a 'and at the same time the high frequency range of the noise emitted from the exhaust ports 10a and 10a'. Control to add additional sound to. That is, the function of the noise control module 380 is a combination of the function of the noise control module 180 and the function of the noise control module 280. The noise control module 380 emits a pre-stored specific sound of a specific frequency range of 2000 Hz to 8000 Hz, and reduces the magnitude of the noise of at least some frequency range of 1500 Hz or less of the noise generated when the fan module operates. The speakers 89 and 989 are controlled.

The noise control module 380 includes the components of FIG. 8A described above. However, since the signal processor 85 of the noise control module 380 generates a control signal by adding an additional sound signal to a signal in which the signals sensed by the detectors 81 and 81 'are reversed, the noise is generated. There is a difference from the signal processor 85 of the control module 180.

Meanwhile, the cleaner equipped with the noise control modules 180 and 380 may adjust the transfer function of the noise control modules 180 and 380 for each product in a product aspect process by using a virtual microphone method for each product. . Even if the signal transfer unit 85 having the same transfer function is provided, there may be a tolerance of the sensing unit or the fan module for each product, and thus the noise reduction result may be different. To this end, for each product, by measuring the overall noise according to the operation of the noise control module using a separate external microphone, it is possible to set the transfer function of the signal processing unit 85 optimized for each product. Here, the transfer function refers to an algorithm in which the sensing signals of the sensing units 81 and 81 'are used as input values and the output signals of the speakers 89 and 989 are used as result values.

FIG. 10 shows that the noise generated at the operation of the fan modules 50 and 50 'according to the operation of the noise control module 380 is less than 1500 Hz and the noise is increased between 2000 Hz and 8000 Hz. It is the data confirmed experimentally. It is confirmed that the peak value of the region of 1500 Hz or less among the noises observed in the non-operation state of the noise control module E0 is reduced by d value dBA in the operation state E3 of the noise control module 380. do. In addition, the magnitude of the noise in the region of 2000 Hz to 8000 Hz among the noises observed in the absence of the operation of the noise control module E0 is increased by a considerable amount f in the operation E3 of the noise control module 380. This is confirmed.

Hereinafter, with reference to FIGS. 6A to 6C, Embodiments A and B according to the presence or absence of the sound transmitting tube 90 will be described.

In Example A with reference to FIGS. 6A and 6B, the sound transmitting tube is not provided. Here, the speaker 89 is disposed in the direction opposite to the centrifugal direction of the peripheral areas B1 and B1 'with respect to the axis O. The speaker 89 is arranged in the center area B2. The speaker 89 is disposed below the discharge cover 12, 12 '. The speaker 89 is disposed above the fan modules 50 and 50 '.

In Embodiment B with reference to FIG. 6C, the cleaner 1 includes a sound transmitting tube 90 for transmitting the sound of the speaker 989 to the sound emitting ports 10b and 10b ′. In FIG. 6C, a noise control module 980 is shown that includes a speaker 989 disposed relatively far from the sound outlets 10b, 10b ′.

The sound transmission pipe 90 connects the start end where the speaker 989 is arranged and the end where the sound emission ports 10b and 10b 'are arranged. Sound transmission tube 90 forms a hollow passage connecting the beginning and the end. By the sound transmitting tube 90, the sound output from the speaker 989 is transmitted along a predetermined direction St, and is emitted through the sound emitting ports 10b and 10b '.

The sound transmission pipe 90 extends longer than the width of the cross section perpendicular to the sound transmission direction St. The sound delivery pipe 90 extends longer than the width of the sound main emission direction Ss of the speaker 989. Specifically, the sound delivery pipe 90 extends longer than three times the width of the sound main emission direction Ss of the speaker 989.

The sound main emission direction Ss of the speaker 989 means a direction in which sound is most strongly emitted from the speaker 989 itself into the air. For example, the speaker 989 includes a diaphragm facing the sound main emission direction Ss, and vibrates the diaphragm using a moving coil or a piezoelectric vibrating element, thereby producing sound in the sound main emission direction Ss. Release.

The sound transmission pipe 90 extends longer than the straight line distance between the sound emission ports 10b and 10b 'and the fan modules 50 and 50'. That is, the extension length of the sound transmitting tube 90 is longer than the straight distance between the sound emitting ports 10b and 10b 'and the fan modules 50 and 50'.

In embodiment B, the speaker 989 may be disposed at a location outside the space between the sound emitting ports 10b and 10b 'and the fan modules 50 and 50'. Through this, the length of the direction of the axis O of the cleaner 1 can be reduced, and the volume of the cleaner 1 can be efficiently reduced. Here, at least a part of the sound transmitting tube 90 passes through the space between the sound emitting ports 10b and 10b 'and the fan modules 50 and 50'.

Here, the sound emitting ports 10b and 10b 'are formed on the upper side of the main body 10, and the fan modules 50 and 50' are lower than the sound emitting holes 10b and 10b 'in the main body 10. Can be placed in. Through this, the height of the cleaner 1 can be reduced efficiently.

The sound transmission pipe 90 is provided to switch the direction of sound transmission (St). That is, the sound transmission pipe 90 may be provided such that the sound transmission direction St is bent or curved. In this case, the sound transmitting tube 90 may extend longer than the straight distance between the sound emitting ports 10b and 10b 'and the speaker 989.

Here, the main sound emission direction Ss of the speakers 89 and 989 may be arranged differently from the opposite direction Se of the sound emission port. In this embodiment, the main sound emission direction Ss is the front side, and the opposite direction Se of the sound emission port is upward.

The sound transmission pipe 90 may include a direction changer 93 for switching the direction of sound transmission (St). A plurality of direction changing units 93 may be provided. In this embodiment, the direction change part 93 is provided so that the sound transmission direction St may be bent from the front upward.

In addition, the sound transmitting tube 90 includes a start passage portion 91 including the start end. The sound transmitting tube 90 includes a termination passage portion 95 including the end. The sound transmission pipe 90 may be configured by sequentially connecting the start passage 91, the direction change unit 93, and the end passage 95.

At least a portion of the sound delivery tube 90 is disposed in the main body 10. The termination passage 95 is disposed in the main body 10. The end passage 95 is disposed in the space between the sound emitting ports 10b and 10b 'and the fan modules 50 and 50'.

Meanwhile, another part of the sound transmitting tube 90 may be disposed besides the main body 10. Referring to the example of FIG. 6C, the start passage portion 91 may be disposed in the handle 30. Here, the speaker 989 is disposed in the handle 30. The speaker 989 may be disposed in the extension part 31. The speaker 989 may be disposed at the rear side of the inner space of the extension part 31. The sound transmitting tube 90 extends from the space in the extension part 31 to the sound emitting ports 10b and 10b '. The sound transmission pipe 90 may be disposed inside the cleaner 1 and may be disposed so as not to be exposed from the outside. Specifically, the start passage 91 extends forward in the extension 31 along the extension 31. The front end of the starting passageway 91 is connected to the turning part 93, and the turning part 93 extends from the front upwards. The front end of the diverter 93 is connected to the end passage 95.

In this embodiment, the speaker 989 has been described as being disposed in the handle 30, but the position of the speaker can be arranged in any space that does not interfere with other components inside the cleaner 1, in which case the output from the speaker The sound may be transmitted to the sound emission ports 10b and 10b 'through the sound transmission pipe 90.

Although not shown, for example, the speaker is disposed inside the dust collecting unit 13, and the sound transmitting pipe 90 avoids the dust separating unit 20 and the fan modules 50 and 50 '. Can be extended.

Although not shown, as another example, the speaker is disposed inside a separate housing for the speaker coupled to the upper portion of the suction unit 11, a part of the sound transmitting tube 90 of the main body 10 It may extend along the outer surface.

10: main body 10a, 10a ': exhaust vent
10b, 10b ': sound outlet 11: suction
12, 12 ': exit cover 20: dust separator
30: handle 31: extension
32: additional extension 40: battery housing
50, 50 ': fan module 51: impeller
52: suction motor 61: pre-filter
62: HEPA filter 70: nozzle module
80, 80 ', 180, 280, 380, 980: noise control module
81, 81 ': detector 89, 989: speaker
90: sound transmitting tube 91: starting passage portion
93: direction change part 95: end passage part
P: Euro P1: Suction Euro
P2, P3: Dust separation flow path P4, P4 ': Fan module flow path
P5, P5 ': exhaust flow path Bt: battery
O: predetermined axis B1, B1 ': peripheral area
B2: center area Ae: air exhaust direction
Ss: Sound main emission direction of the speaker Se: Opposite direction of the discharge port
St: direction of sound transmission

Claims (10)

A main body forming a flow path for guiding air to be sucked and discharged to the outside;
A dust separator disposed on the flow path to separate dust from the air;
A fan module disposed on the flow path to move air in the flow path; And
And a noise control module for controlling an output of the speaker when the fan module is operated.
The main body forms an exhaust port through which air in the flow path is discharged and a sound discharge port through which sound of the speaker is discharged.
A sound transmission pipe connecting the start end of the speaker and the end where the sound emission port is arranged to transmit the sound of the speaker to the sound emission port;
Further comprising a handle coupled to the main body,
The speaker is disposed in the handle. The method of claim 1,
The sound transmission pipe is a cleaner, which extends longer than the width of the cross section perpendicular to the sound transmission direction. The method of claim 1,
The sound transmission pipe,
A cleaner that extends longer than the straight line distance between the sound outlet and the fan module. The method of claim 1,
The sound transmission pipe is provided to switch the direction of sound transmission, cleaner. The method of claim 4, wherein
The main sound emitting direction of the speaker is disposed differently from the opposite direction of the sound emitting port. The method of claim 1,
The speaker is disposed at a position outside the space between the sound emitting port and the fan module,
At least a portion of the sound transmitting tube passes through a space between the sound outlet and the fan module. The method of claim 6,
The sound emitting port is formed on the upper side of the main body,
And the fan module is disposed below the sound outlet in the main body. The method of claim 1,
The noise control module,
A first function of controlling the output of the speaker to reduce the magnitude of noise in at least some frequency region below 1500 Hz among the noise generated during operation of the fan module, and the magnitude of noise in at least some frequency region below 8000 Hz And at least one of a second function of controlling an output of the speaker to increase a.
The method of claim 1,
The handle is,
It includes an extension protruding to the rear side of the main body,
And the speaker is disposed in the extension. The method of claim 1,
And the exhaust vent and the sound outlet face in the same direction with respect to the main body.

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