WO2019177392A1

WO2019177392A1 - Cyclone type dust collector and cleaner having the same

Info

Publication number: WO2019177392A1
Application number: PCT/KR2019/002949
Authority: WO
Inventors: Kietak Hyun; Changgun LEE; Seungyeop Lee
Original assignee: Lg Electronics Inc.
Priority date: 2018-03-14
Filing date: 2019-03-14
Publication date: 2019-09-19
Also published as: TWI733092B; US11330947B2; EP3764862A4; KR20190108358A; US20190282050A1; KR102070065B1; EP3764862A1; TW201938098A

Abstract

A cyclone type dust collector and a cleaner of the present invention include a first cyclone comprising a first cyclone body configured to generate a cyclone flow around a flow axis extending in a vertical direction, a first air inlet formed in the first cyclone body, a first dust outlet formed in the first cyclone body, and a first air outlet formed in the first cyclone body; and a first dust container configured to communicate with the first dust outlet and collect dust, wherein at least a part of the first cyclone body is disposed to overlap with the first dust container in a first direction intersected with the flow axis.

Description

CYCLONE TYPE DUST COLLECTOR AND CLEANER HAVING THE SAME

The present invention relates to a cyclone type dust collector and a cleaner having the same, and more particularly, to a cleaner having a low height.

In general, robots have been developed for industrial use and have been part of factory automation. In recent years, the application field of robot has been more expanded to develop medical robots, aerospace robots, and the like, and household robots that may be used in ordinary homes also have been made. A typical example of a mobile robot used at home is a robot cleaner.

Such a mobile robot generally has a rechargeable battery and is able to travel on its own by having an obstacle sensor that can avoid an obstacle during traveling.

In recent years, apart from merely traveling autonomously to perform cleaning, mobile robots have been actively researched for utilization in various fields such as health care, smart home, remote control, and the like.

In the conventional Korean Patent Laid-Open No. 10-2005-0085478, a cyclone type dust collector used in a cleaner includes a cyclone body for causing a cyclone flow around a flow axis, and a dust container disposed below the cyclone body to be overlapped with the flow axis of the cyclone body.

The dust container is located below the cyclone body, and collects the dust in the dust container due to the weight of the dust.

However, such a conventional cyclone type structure increases the overall height of the robot cleaner, which prevents the robot cleaner from entering a space between a floor surface and the bottom of furniture.

Therefore, the conventional cleaner has a cyclone type dust collector having a high height, so that it is difficult to clean the space between the floor surface and the bottom of furniture.

The present invention has been made in view of the above problems, and provides a cyclone type dust collector that has a low height and can easily clean a space between furniture and a floor surface, and a cleaner having the same.

The present invention further provides a cyclone type dust collector which has an excellent dust collecting efficiency while arranging a cyclone body and a dust container to be spaced in the horizontal direction, and a cleaner having the same.

The present invention further provides a cyclone type dust collector which can easily change the size of a dust container and can easily adjust the positions of a plurality of cyclones, and a cleaner having the same.

In accordance with an aspect of the present invention, a cyclone type dust collector includes: a first cyclone comprising a first cyclone body configured to generate a cyclone flow around a flow axis extending in a vertical direction, a first air inlet formed in the first cyclone body, a first dust outlet formed in the first cyclone body, and a first air outlet formed in the first cyclone body; and a first dust container configured to communicate with the first dust outlet and collect dust, wherein at least a part of the first cyclone body is disposed to overlap with the first dust container in a first direction intersected with the flow axis.

The first air inlet is disposed below the first dust outlet.

The first air outlet is disposed above the first air inlet.

The first air outlet is disposed above the first dust outlet.

The first air inlet and the first dust outlet are formed in a circumferential surface of the first cyclone body, and the first air outlet is formed in an upper cover connected to an upper end of the circumferential surface of the first cyclone body.

The cyclone type dust collector further includes a mesh cone disposed between an interior of the first cyclone body and the first air outlet.

The cyclone type dust collector further includes at least one second cyclone configured to perform a cyclone flow for an air discharged from the first cyclone around a flow axis extending in a vertical direction; and a second dust container disposed below the second cyclone to collect dust collected in the second cyclone.

At least a part of the second cyclone and the second dust container are disposed to overlap with the first dust container in the first direction.

At least a part of the second cyclone and the second dust container are disposed to overlap with the first cyclone body in a second direction intersected with the first direction and the flow axis.

The second cyclone includes a second cyclone body configured to generate a cyclone flow around a flow axis extending in a vertical direction, a second air inlet formed in the second cyclone body, a second dust outlet formed in the second cyclone body, and a second air outlet formed in the second cyclone body.

The second air inlet communicates with the first air outlet and is located higher than an upper end of the first cyclone body.

The second air outlet and the second air inlet are disposed above the second dust outlet.

The cyclone type dust collector further includes a guide vane which is connected to the second cyclone body and guides air introduced from the second air inlet.

The guide vane forms at least a part of a spiral orbit around a flow axis of the second cyclone body.

The second cyclone and the second dust container are located inside the first cyclone body.

In accordance with another aspect of the present invention, a cyclone type dust collector includes: a first cyclone configured to perform a cyclone flow for an introduced air around a flow axis extending in a vertical direction; a first dust container configured to collect dust collected in the first cyclone; at least one second cyclone configured to perform a cyclone flow for air discharged from the first cyclone around a flow axis extending in a vertical direction; and a second dust container which is disposed below the second cyclone and collects dust collected in the second cyclone, wherein the first cyclone, the second cyclone, and the second dust container are disposed to overlap with the first dust container in a first direction intersected with the flow axis.

In accordance with another aspect of the present invention, a cleaner includes: a cleaner main body; a cyclone type dust collector disposed in the cleaner main body; and a wheel unit configured to move the cleaner main body, wherein the cyclone type dust collector comprises: a first cyclone comprising a first cyclone body configured to generate a cyclone flow around a flow axis extending in a vertical direction, a first air inlet formed in the first cyclone body, a first dust outlet formed in the first cyclone body, and a first air outlet formed in the first cyclone body; and a first dust container configured to communicate with the first dust outlet and collect dust, wherein at least a part of the first cyclone body is disposed to overlap with the first dust container in a first direction intersected with the flow axis.

Through the above-mentioned solution, the present invention has an advantage in that dust collection efficiency can be maintained while realizing a slim design having a low height.

In addition, the present invention has an advantage that a space having a low height such as between furniture and a floor surface can be easily cleaned.

In addition, the present invention is advantageous in that the dust bin is disposed outside the cyclone in the horizontal direction so that the size of the dust bin can be freely changed irrespective of the capacity and shape of the cyclone.

Further, the present invention is advantageous in that dust collection efficiency can be maintained even if the air inlet of the cyclone is disposed below the air outlet and the dust outlet so that the dust container is not disposed below the cyclone.

The objects, features and advantages of the present invention will be more apparent from the following detailed description in conjunction with the accompanying drawings, in which:

FIG. 1 is a perspective view illustrating a cleaner according to an embodiment of the present invention;

FIG. 2 is a plan view of the cleaner of FIG. 1;

FIG. 3 is a side view of the cleaner of FIG. 1;

FIG. 4 is a perspective view of a cyclone type dust collector according to an embodiment of the present invention;

FIG. 5 is a cross-sectional perspective view of the cyclone type dust collector of FIG. 4;

FIG. 6A is a cross-sectional view of the cyclone type dust collector of FIG. 4;

FIG. 6B is a view illustrating a flow of air in the cyclone type dust collector of FIG. 4;

FIG. 7 is a cross-sectional perspective view of the cyclone type dust collector of FIG. 4 taken along a direction different from FIG. 5;

FIG. 8 is a perspective view of a cyclone type dust collector according to another embodiment of the present invention;

FIG. 9 is a cross-sectional view of the cyclone type dust collector of FIG. 8; and

FIG. 10 is a view illustrating a flow of air in the cyclone type dust collector of FIG. 8.

Exemplary embodiments of the present invention are described with reference to the accompanying drawings in detail. The same reference numbers are used throughout the drawings to refer to the same or like parts. Detailed descriptions of well-known functions and structures incorporated herein may be omitted to avoid obscuring the subject matter of the present invention.

Referring to FIGS. 1 to 3, a cleaner 1 includes a cleaner main body 2, a cleaning nozzle 4, a sensing unit 6, and a cyclone type dust collector.

The cleaner main body 2 includes a controller (not shown) for controlling the cleaner 1 and various mounted or installed components. The cleaner main body 2 may form a space in which various components forming the cleaner 1 are accommodated.

The cleaner main body 2 may be selected and travel by a user in one of an automatic mode and a manual mode. The cleaner main body 2 may be provided with a mode selection input unit 7 for enabling the user to select one of the automatic mode and the manual mode. When the user selects the automatic mode in the mode selection input unit, the cleaner main body 2 may automatically travel like a robot cleaner. Further, when the user selects the manual mode in the mode selection input unit, the cleaner main body 2 may be manually driven by dragging or pushing by the force of the user.

The cleaner main body 2 is provided with a wheel unit 5 for traveling the cleaner main body 2. The wheel unit 5 may include a motor (not shown) and at least one wheel rotated by the driving force of the motor. The rotation direction of the motor may be controlled by a controller (not shown), so that the wheel of the wheel unit 5 may be configured to be rotatable in one direction or the other direction.

The wheel unit 5 may be provided in both left and right sides of the cleaner main body 2. The cleaner main body 2 may be moved forward or backward and leftward or rightward by the wheel unit 5 or rotated.

Each of the wheel units 5 may be configured to be drivable independently of each other. To this end, each wheel unit 5 may be driven by a different motor.

The controller controls the drive of the wheel unit 5, so that the cleaner 1 autonomously travel the floor.

The wheel unit 5 is provided in a lower portion of the cleaner main body 2 to move the cleaner main body 2. The wheel unit 5 may be configured only of circular wheels, may be configured by connecting circular rollers by a belt chain, or may be configured by combining the circular wheels with circular rollers connected by a belt chain. The upper portion of the wheel of the wheel unit 5 may be disposed inside the cleaner main body 2 and the lower portion thereof may protrude to the lower side of the cleaner main body 2. The wheel of the wheel unit 5 may be provided in such a manner that it is in contact with the floor surface which is a surface to be cleaned, thereby enabling the cleaner main body 2 to travel.

The wheel unit 5 may be installed in the left and right sides of the cleaner main body 2, respectively. The wheel unit 5 disposed in the left side of the cleaner main body 2 and the wheel unit 5 disposed in the right side of the cleaner main body 2 may be driven independently of each other. That is, the wheel unit 5 disposed in the left side of the cleaner main body 2 may be connected to each other through at least one first gear (not shown), and may be rotated by a driving force of a first traveling motor (not shown) for rotating the first gear. In addition, the wheel unit 5 disposed in the right side of the cleaner main body 2 may be connected to each other through at least one second gear (not shown), and may be rotated by a driving force of a second traveling motor (not shown) for rotating the second gear.

The controller may determine the traveling direction of the cleaner main body 2 by controlling the rotation speed of a rotation shaft of each of the first traveling motor and the second traveling motor. For example, when the rotation shafts of the first traveling motor and the second traveling motor are simultaneously rotated at the same speed, the cleaner main body 2 can go straight. In addition, when the rotation shafts of the first traveling motor and the second traveling motor are simultaneously rotated at a different speed, the cleaner main body 2 can be turned to the left or right. The controller may drive one of the first traveling motor and the second traveling motor and stop the other so as to turn the cleaner main body 2 to the left or right.

A suspension unit (not shown) may be installed inside the cleaner main body 2. The suspension unit may include a coil spring. The suspension unit may absorb the impact and vibration transmitted from the wheel unit 5 by using the elastic force of the coil spring when the cleaner main body 2 travels.

Further, an elevating unit (not shown) for adjusting the height of the cleaner main body 2 may be installed in the suspension unit. The elevating unit may be vertically movably installed in the suspension unit and may be coupled to the cleaner main body 100. Therefore, when the elevating unit is moved upward from the suspension unit, the cleaner main body 100 may be moved upward together with the elevating unit. When the elevating unit is moved downward from the suspension unit, the cleaner main body 100 may be moved downward together with the elevating unit. The cleaner main body 100 may be vertically moved by the elevating unit to adjust the height.

When the cleaner main body 2 travels on a hard floor surface, the wheel of the wheel unit 5 may move and clean the floor surface in a state in which the bottom surface of the cleaning nozzle 4 is in close contact with the floor surface. However, when a carpet is laid on the floor surface to be cleaned, slip occurs in the wheel of the wheel unit 5, so that the traveling performance of the cleaner main body 2 may be deteriorated. Further, the traveling performance of the cleaner main body 2 may be deteriorated due to the force of sucking the carpet by the cleaning nozzle 4.

However, since the elevating unit adjusts the height of the cleaner main body 2 according to the slip ratio of the wheel of the wheel unit 5, the degree to which the bottom surface of the cleaning nozzle 4 is in close contact with the surface to be cleaned may be adjusted, so that the traveling performance of the cleaner main body 2 may be maintained regardless of the material of the surface to be cleaned.

Meanwhile, when the wheel of the wheel unit 5 disposed in the left side of the cleaner main body 2 is disposed to be connected to the first traveling motor through the first gear, and the wheel of the wheel unit 5 disposed in the right side of the cleaner main body 2 is disposed to be connected to the second traveling motor through the second gear, if the user desires to drive the cleaner main body 2 in the manual mode in a state where the first traveling motor and the second traveling motor are stopped, all of the wheels of the left and right wheel units 5 cannot be rotated. Therefore, in the manual mode of the cleaner main body 2, the connection of the wheels of the left and right wheel units 5 and the first and second traveling motors should be released. To this end, it is preferable that a clutch is disposed inside the cleaner main body 2 such that the clutch connects the wheels of the left and right wheel units 5 with the first and second traveling motors in the automatic mode of the cleaner main body 2, and disconnects the wheels of the left and right wheel units 5 with the first and second traveling motors in the manual mode of the cleaner main body 2.

The cleaner main body 2 is equipped with a battery 300 for supplying power to the electrical components of the cleaner 1. The battery 300 may be configured to be chargeable and may be configured to be detachable from the cleaner main body 2.

The battery 300 is preferably disposed to overlap with the cyclone type dust collector described later in the horizontal direction (left-right direction LeRi) or the front-rear direction (FR) so as to implement the cleaner to be slim. The height of the battery 300 is preferably equal to or smaller than the height of the cyclone type dust collector.

The cleaner main body 2 is provided with a dust collector accommodating unit (not shown), and the cyclone type dust collector for separating and collecting the dust in the sucked air may be detachably coupled to the dust collector accommodating unit.

The dust collector accommodating unit may be formed to be opened toward the lower side of the cleaner main body 2. The dust collector accommodating unit may be formed in other position (e.g., behind the cleaner main body 2), depending on the type of the cleaner. The cyclone type dust collector is detachably coupled to the dust collector accommodating unit.

The cyclone type dust collector is provided with an inlet (first air inlet) for introducing a dust-containing air and an outlet (not shown) for discharging a dust-separated air. An intake flow path formed inside the cleaner main body 2 corresponds to a flow path ranging from the cleaning nozzle 4 to the inlet of the cyclone type dust collector, and a discharge flow path corresponds to a flow path ranging from the outlet of the cyclone type dust collector to a discharge port.

According to such a configuration, the air containing the dust introduced through the cleaning nozzle 4 flows into the cyclone type dust collector via the intake flow path inside the cleaner main body 2, and the air and the dust are separated from each other in the cyclone type dust collector. The dust is collected in the dust container 140, and the air is discharged from the dust container 140, and then finally discharged to the outside through the discharge port via the discharge flow path inside the cleaner main body 2.

The cleaner main body 2 may be provided with a lower cover (not shown) that covers the sensing unit 130 accommodated in the dust collector accommodating unit. The lower cover may be hingedly connected to one side of the cleaner main body 2 to be rotatable. The lower cover may cover the opened lower side of the dust collector accommodating unit and cover the lower side of the cyclone type dust collector. In addition, the lower cover may be configured to be detachable from the cleaner main body 2.

A photographing unit 3 is provided in the cleaner main body 2, and may photograph an image for simultaneous localization and mapping (SLAM) of the cleaner. The image photographed by the photographing unit 3 is used to generate a map of traveling area or to detect the current position in the traveling area.

The photographing unit 3 may generate three-dimensional coordinate information related to the surroundings of the cleaner main body 2. That is, the photographing unit 3 may be a 3D depth camera that calculates a distance between the cleaner 1 and an object to be photographed. Accordingly, field data for three-dimensional coordinate information may be generated.

Specifically, the photographing unit 3 may photograph a two-dimensional image related to the surroundings of the cleaner main body 2, and may generate a plurality of three-dimensional coordinate information corresponding to the photographed two-dimensional image.

In one embodiment, the photographing unit 3 may include two or more cameras that acquire an existing two-dimensional image, so that it may achieve a stereoscopic vision scheme that generates three-dimensional coordinate information by combining two or more images obtained from two or more cameras.

Specifically, the photographing unit 3 according to the embodiment may include a first pattern irradiating unit for irradiating light of a first pattern downward toward the front of the main body, a second pattern irradiating unit for irradiating light of a second pattern upward toward the front of the main body 2, and an image acquiring unit for acquiring an image of the front of the main body. Thus, the image acquiring unit may acquire an image of an area to which the light of the first pattern and the light of the second pattern are inputted.

In another embodiment, the photographing unit 3 may include an infrared ray pattern emitting unit for irradiating an infrared ray pattern together with a single camera, and captures the shape of the infrared ray pattern, irradiated by the infrared ray pattern emitting unit, projected onto an object to be photographed, so that the distance between the photographing unit 3 and the object to be photographed can be measured. Such a photographing unit 3 may be an infra red (IR) type photographing unit 3.

In another embodiment, the photographing unit 3 may include a light emitting unit that emits light together with a single camera. The photographing unit 3 may receive a part of laser, emitted from the light emitting unit, which is reflected from the object to be photographed, and analyze the received laser, so that the distance between the photographing unit 3 and the object to be photographed can be measured. Such a photographing unit 3 may be a time-of-flight (TOF) type photographing unit 3.

Specifically, the laser of the photographing unit 3 as described above is configured to irradiate a laser extended in at least one direction. In one example, the photographing unit 3 may include first and second lasers, when the first laser may irradiate linear lasers intersected with each other, and the second laser may irradiate a single linear laser. According to this, the lowermost laser is used to detect an obstacle in a bottom part, the uppermost laser is used to detect an obstacle in an upper part, and the intermediate laser between the lowermost laser and the uppermost laser detects an obstacle in a middle part.

The sensing unit 6 is disposed in the cleaner main body 2 and detects information related to the environment in which the cleaner main body 2 is located. The sensing unit 6 detects information related to the environment so as to generate field data.

The sensing unit 6 detects a nearby geographic feature (including obstacles) so that the cleaner 1 does not collide with the obstacle. The sensing unit 6 may detect information on outside the cleaner 1. The sensing unit 6 may detect a user around the cleaner 1. The sensing unit 6 may detect an object around the cleaner 1.

In addition, the sensing unit 6 is configured to be able to accomplish panning (move to left and right) and tilting (dispose to be inclined up and down) in order to improve the detection function of the cleaner and the traveling function of a robot cleaner.

The sensing unit 6 may include at least one of an external signal detection sensor, an obstacle detection sensor, a cliff detection sensor, a lower camera sensor, an upper camera sensor, an encoder, a shock detection sensor, and a microphone.

The external signal detection sensor may detect an external signal of the cleaner 1. The external signal detection sensor may be, for example, an infrared ray sensor, an ultrasonic sensor, a radio frequency (RF) sensor, or the like. Thus, field data for the external signal may be generated.

The cleaner 1 may receive a guide signal generated by the charging base by using the external signal detection sensor and detect information on the position and direction of a charging base. At this time, the charging base may transmit a guide signal indicating the direction and the distance so that the cleaner 1 is able to return. That is, the cleaner 1 may receive a signal transmitted from the charging base to determine the current position, set the moving direction, and return to the charging base.

The obstacle detection sensor may detect an obstacle ahead. Thus, field data for the obstacle is generated.

The obstacle detection sensor may detect an object existing in the moving direction of the cleaner 1 and may transmit a generated field data to the controller.

That is, the obstacle detection sensor may detect protrusions, house fittings, furniture, walls, wall edges, and the like existing on the moving path of the cleaner 1 and transmit the field data to the controller.

The obstacle detection sensor may be, for example, an infrared sensor, an ultrasonic sensor, a RF sensor, a geomagnetic sensor, or the like. The cleaner 1 may use one type of sensor as an obstacle detection sensor or use two or more types of sensors together as needed.

The cliff sensor may detect an obstacle on the floor supporting the cleaner main body 2, by mainly using various types of optical sensors. Thus, field data for an obstacle on the floor is generated.

The obstacle detection sensor may be an infrared sensor having a light emitting unit and a light receiving unit like the obstacle detection sensor, an ultrasonic sensor, an RF sensor, a position sensitive detector (PSD) sensor, or the like.

For example, the cliff detection sensor may be a PSD sensor, but it may be configured of a plurality of different types of sensors. The PSD sensor has a light emitting unit that emits infrared ray to an obstacle, and a light receiving unit that receives infrared ray that is reflected and returned from the obstacle. When the obstacle is detected by using the PSD sensor, a stable measurement value may be obtained irrespective of the reflectance of the obstacle and the color difference.

The controller may measuring the infrared angle between a light emitting signal of the infrared ray emitted toward the ground by the cliff detection sensor and a reflection signal received after being reflected by the obstacle, and detect the cliff, thereby acquiring the field data of the depth of the cliff.

The lower camera sensor acquires image information (field data) about the surface to be cleaned during the movement of the cleaner 1. The lower camera sensor is also referred to as an optical flow sensor. The lower camera sensor may convert the downward image inputted from an image sensor provided in the sensor to generate image data (field data) of a certain format. Field data for an image recognized through the lower camera sensor may be generated.

By using the lower camera sensor, the controller may detect the position of a mobile robot irrespective of the slip of the mobile robot. The controller may compare and analyze the image data photographed by the lower camera sensor according to time to calculate the moving distance and the moving direction, and calculate the position of the mobile robot based on the calculated moving distance and moving direction.

The cliff detection sensor may detect the material of the floor. The cliff detection sensor may detect the reflectance of the light reflected from the floor, and the controller may determine the material of the floor according to the reflectance. For example, if the material of the floor is a marble having a high reflectance, the reflectance of the light detected by the cliff detection sensor is high. If the material of the floor is a wood, a floor paper, a carpet, and the like having a relatively low reflectance, the reflectance of the light detected by the cliff detection sensor is relatively low. Therefore, the controller may determine the material of the floor by using the reflectance of the floor detected by the cliff detection sensor, and may determine that the floor is a carpet when the reflectance of the floor is a set reflectance.

In addition, the cliff detection sensor may detect the distance to the floor, and the controller may detect the material of the floor according to the distance to the floor. For example, if the cleaner is located on a carpet on the floor, the distance to the floor detected by the cliff detection sensor may be detected to be shorter than the case where the cleaner is located on a floor not carpeted. Therefore, the controller may determine the material of the floor by using the distance to the floor detected by the cliff sensor. If the distance to the floor is equal to or greater than a set distance, the floor may be determined as a carpet.

A floor detection sensor may be a camera sensor, a current sensor, and the like, in addition to the cliff detection sensor.

The camera sensor may photograph the floor, and the controller may analyze the image photographed by the camera sensor to determine the material of the floor. The controller may set images corresponding to the material of the floor, and the controller may determine the material of the floor as a material corresponding to a set image when the set image is included in the image photographed by the camera sensor. If the set image corresponding to the image of the carpet is included in the image, the controller may determine that the material of the floor is a carpet.

The current sensor may detect the current resistance value of the wheel drive motor, and the controller can determine the material of the bottom according to the current resistance value detected by the current sensor. For example, when the cleaning nozzle 4 is located on the carpet placed on the floor, the wool of the carpet may be sucked through a suction port of the cleaning nozzle 4 to interrupt the traveling of the cleaner. At this time, a current resistance due to load may occur between a rotor of a wheel drive motor and a stator. The current sensor may detect the current resistance value generated by the wheel drive motor, and the controller may determine the material of the floor according to the current resistance value. If the current resistance value is equal to or greater than the set value, the controller may determine the material of the floor as carpet.

The upper camera sensor may be installed to face the upper side or the front side of the cleaner 1, and may photograph the vicinity of the cleaner 1. When the cleaner 1 has a plurality of upper camera sensors, the camera sensors may be formed in the upper portion or on the side surface of the mobile robot at a certain distance or a certain angle. Field data for an image recognized through the upper camera sensor may be generated.

The encoder may detect information related to the operation of the motor that drives the wheel of the wheel unit 5. Thus, field data for the operation of the motor is generated.

The shock detection sensor may detect a shock when the cleaner 1 collides with an external obstacle or the like. Thus, field data for an external shock is generated.

The microphone may detect an external sound. Accordingly, field data for an external sound is generated.

In this embodiment, the sensing unit 6 includes an image sensor. In the present embodiment, the field data is image information acquired by the image sensor or feature point information extracted from the image information, but it is not necessarily limited thereto.

The cleaning nozzle 4 is configured to suck the air-containing dust or to wipe the floor. Here, the cleaning nozzle 4 for sucking the dust-containing air may be referred to as a suction module, and the cleaning nozzle 4 for cleaning the floor may be referred to as a mop module.

The cleaning nozzle 4 may be detachably coupled to the cleaner main body 2. When a suction module is detached from the cleaner main body 2, the mop module may be detachably coupled to the cleaner main body 2 in place of the detached suction module. Accordingly, when a user desires to remove the dust on the floor, the suction module may be mounted in the cleaner main body 2, and when the user desires to clean the floor, the mop module may be mounted in the cleaner main body 2.

The cleaning nozzle 4 may be configured to have a function of cleaning the floor after sucking the air-containing dust.

The cleaning nozzle 4 may be disposed in a lower portion of the cleaner main body 2, or may be disposed to protrude from one side of the cleaner main body 2 as shown in the drawing. The one side may be a side in which the cleaner main body 2 travels in a forward direction, that is, the front side of the cleaner main body 2. The cleaning nozzle 4 may be disposed in a forward side F of the wheel unit 5.

The main body 2 may further include a suction force generating unit 200 for generating a suction force. The suction force generating unit 200 may include a motor housing (not shown) and a suction motor accommodated inside the motor housing.

At least a portion of the suction motor may be located to overlap with a first dust container of the cyclone type dust collector in a horizontal direction. Thus, the suction motor is located in the lateral side of the cyclone type dust collector .

An impeller (not shown) may be coupled to a rotation shaft of the suction motor. When the suction motor is driven and the impeller is rotated together with the rotation shaft, the impeller may generate a suction force.

An intake flow path may be formed inside the cleaner main body 2. Foreign matter such as dust may be introduced into the cleaning nozzle 4 from the surface to be cleaned due to the suction force generated by the driving force of the suction motor, and the foreign matter introduced into the cleaning nozzle 4 may be introduced into the intake flow path.

The cleaning nozzle 4 may clean the floor surface to be cleaned when the cleaner main body 2 travels in the automatic mode. The cleaning nozzle 4 may be disposed adjacent to the floor surface of the front surface of the cleaner main body 2. A suction port for sucking air may be formed in the bottom surface of the cleaning nozzle 4. The suction port may be disposed toward the floor surface when the cleaning nozzle 4 is coupled with the cleaner main body 2.

The cleaning nozzle 4 may be coupled to the cleaner main body 2 via a gantry (not shown). The cleaning nozzle 4 can communicate with the intake flow path of the cleaner main body 2 via a cable adapter.

The cleaning nozzle 4 may include a case having a suction port formed in a bottom surface portion thereof, and a brush unit may be rotatably provided in the case. The case may provide an empty space so that the brush unit may be rotatably installed therein. The brush unit may include a rotation shaft extending to the left and right and a brush protruding from the outer circumference of the rotation shaft. The rotation shaft of the brush unit may be rotatably coupled to the left and right side surfaces of the case.

The brush unit is disposed such that a lower portion of the brush protrudes through the suction port formed in the bottom of the case. When the suction motor is driven, the brush unit is rotated by a suction force and can sweep dust and other foreign matter upward from the floor surface to be cleaned. The foreign matter swept upward may be sucked into the case by the suction force. Preferably, the brush is formed of a material that does not generate frictional electricity so that foreign matter can not easily adhere thereto.

When the cleaner of the present invention has a high height, if a space between the furniture and the floor surface has a low height, the cleaner can not enter into the space, so that a space that can not be cleaned by the cleaner may occur.

In order to solve such a problem, the cyclone type dust collector according to an embodiment of the present invention has a low-height configuration.

Referring to FIGS. 4 to 7, the cyclone type dust collector according to an embodiment of the present invention may include at least one cyclone and at least one dust container.

For example, the cyclone type dust collector 100 according to an embodiment of the present invention may include a first cyclone 110 and a first dust container 190.

The first cyclone 110 performs a cyclone flow for an introduced air around a flow axis extending in the vertical direction. The flow axis of the first cyclone 110 may be defined as a first flow axis A1.

The first cyclone 110 may communicate with a first dust container 190. The air and the dust sucked through the first cyclone 110 spirally flows along a circumferential surface 112a of the first cyclone 110.

The first cyclone 110 includes a first cyclone body 112 for generating a cyclone flow around the first flow axis A1 extending in the vertical direction, a first air inlet 111 formed in the first cyclone body 112, a first dust outlet 115 formed in the first cyclone body 112, and a first air outlet 113 formed in the first cyclone body 112.

The first cyclone body 112 has a shape that generates a cyclone flow around the first flow axis A1 extending in the vertical direction. The first cyclone body 112 may have various shapes such as a cylinder, an elliptical pillar, a cone, and the like.

For example, the first cyclone body 112 may be disposed to surround the first flow axis A1, and may include a circumferential surface 112a having opened upper and lower portions, an upper cover 112b covering an upper portion of the circumferential surface 112a, and a lower cover 112c covering a lower portion of the circumferential surface 112a.

The circumferential surface 112a may define a circular or elliptical orbit based on the first flow axis A1 when viewed from above. The inner space defined by the circumferential surface 112a, the upper cover 112b, and the lower cover 112c is a flow space 112d through which the sucked air spirally flows.

The lower cover 112c covers the lower portion of the circumferential surface 112a. In order to dispose the first dust container 190 to be overlapped with the first cyclone body 112 in the horizontal direction, the air-containing dust is preferably introduced from the lower portion of the first cyclone body 112. The lower cover 112c may have a flat shape, but may have a shape that can rotate the air introduced from the first air inlet 111 while raising the air.

Specifically, the respective areas of the lower cover 112c may have a stepped portion, or the lower cover 112c may define a part of a spiral orbit having the first flow axis A1 as a central axis. More specifically, the area excluding a central portion of the lower cover 112c may be a spiral plate.

The upper cover 112b may cover the upper portion of the circumferential surface 112a. Since the upper cover 112b does not affect the spiral flow of the air, it is formed flat.

The first air inlet 111 is formed in the first cyclone body 112 to provide an external air to the inside of the first cyclone body 112. The first air inlet 111 communicates with the cleaning nozzle 4, so that the air sucked from the cleaning nozzle 4 flows.

The first air inlet 111 is formed in the circumferential surface 112a of the first cyclone body 112. The cyclone flow is generated by the traveling direction of the air introduced through the first air inlet 111. Specifically, the first air inlet 111 may extend in the tangential direction of the circumferential surface 112a of the circular orbit around the first flow axis A1. The first air inlet 111 may be implemented by a pipe having a certain length. The first air inlet 111 may extend in a direction parallel to the horizontal direction.

The first air outlet 113 is formed in the first cyclone body 112 to discharge the air inside the first cyclone body 112 to the outside of the first cyclone body 112. The first air outlet 113 may communicate with an exhaust port or may communicate with the second cyclone 120 described later. Specifically, the first air outlet 113 may communicate with the second air inlet 121 of the second cyclone 120. Therefore, the air discharged through the first air outlet 113 may be supplied to the second cyclone 120, and the dust may be separated again.

The first air outlet 113 is formed in the upper cover 112b connected to the upper end of the circumferential surface 112a of the first cyclone body 112. Specifically, the first air outlet 113 may be formed to overlap with the first flow axis A1.

The first dust outlet 115 is formed in the first cyclone body 112. The first dust outlet 115 is a space in which the dust which is separated while the air inside the first cyclone body 112 is cyclone-rotated flows. The dust separated from the first cyclone body 112 is discharged to the outside of the first cyclone body 112 through the first dust outlet 115.

The first dust outlet 115 is formed in the circumferential surface 112a of the first cyclone body 112. Specifically, the first dust outlet 115 may extend in the tangential direction of the circumferential surface 112a of the circular orbit based on the first flow axis A1. The first dust outlet 115 may be implemented by a pipe having a certain length. The first dust outlet 115 may extend in a direction parallel to the horizontal direction.

The first dust outlet 115 communicates with the first dust container 190. The first dust outlet 115 is connected closely to an upper end of the first dust container 190 in order to prevent the dust supplied to the first dust container 190 through the first dust outlet 11 from flowing back to the first cyclone body 112.

The first dust container 190 collects the dust collected in the first cyclone 110, and communicates with the first dust outlet 115. The horizontal width or length of the first dust container 190 may be greater than the height.

The first cyclone 110 and the first dust container 190 may be disposed to overlap with each other in the horizontal direction so as to reduce the height of the cyclone type dust collector 100. The first dust container 190 may be disposed in the outside of the first cyclone 110.

When the first dust container 190 is disposed not to overlap with the first cyclone 110 in the direction of the first flow axis A1, but is disposed to overlap with the first cyclone 110 in the horizontal direction, the height of the cleaner may be reduced, so that it is easy to clean a space having a low height.

In particular, at least a part of the first cyclone body 112 may be disposed to overlap with the first dust container 190 in a first direction intersected with the first flow axis A1. Here, the first direction means a front-rear direction. Obviously, at least a part of the first cyclone body 112 may be disposed to overlap with the first dust container 190 in the left and right direction intersected with the first flow axis A1.

Preferably, the first cyclone body 112 may be disposed to completely overlap with the first dust container 190 in the first direction. The height of the first cyclone body 112 may be smaller than the height of the first dust container 190.

When the first cyclone body 112 and the first dust container 190 are disposed in the horizontal direction, it is difficult to collect dust by gravity. To solve this problem, the first air inlet 111 may be disposed below the first dust outlet 115 and the first air outlet 113 may be disposed above the first air inlet 111. Specifically, the first air inlet 111 may be disposed below the circumferential surface 112a of the first cyclone body 112, and the first dust outlet 115 may be disposed in a relatively upper portion of the first air inlet 111 in the circumferential surface 112a of the first cyclone body 112.

Thus, air is supplied through the first air inlet 111 located in the lower portion of the first cyclone body 112. The air supplied through the first air inlet 111 performs a spiral movement of rotating while moving upward in the first cyclone body 112, so that the dust is separated. The separated dust is collected in the first dust container 190 through the first dust outlet 115 located in the upper portion of the first cyclone body 112. The dust-separated air is discharged through the first air outlet 113. Since the first air outlet 113 and the first dust outlet 115 are disposed above the first air inlet 111, the dust may be effectively collected.

The first cyclone 110 may further include a mesh cone for removing large foreign matter or dust from the air discharged from the first cyclone 110. Specifically, the mesh cone is disposed between the inside of the first cyclone body 112 and the first air outlet 113. The mesh cone isolates the first air outlet 113 and the inside of the first cyclone body 112. More specifically, the mesh cone has a cone or cylindrical shape extending from the rim of the first air outlet 113 into the interior of the first cyclone body 112.

A plurality of through holes may be formed in the mesh cone. The size of the filtered foreign matter is determined by the size of the through hole. The mesh cone prevents large dust from flowing into the second cyclone 120 which collects small dust so that the second cyclone 120 is prevented from being clogged with the large dust.

The cyclone type dust collector 100 may further include a second cyclone 120 for separating the dust again from the air discharged from the first cyclone 110. The second cyclone 120 has a smaller size than the first cyclone 110 and can collect a smaller dust in comparison with the first cyclone 110. The second cyclone 120 may be installed in the same number as the first cyclone 110 or may be installed in a larger number. Preferably, at least two second cyclones 120 may be installed.

The second cyclone 120 performs a cyclone flow for an air discharged from the first cyclone 110 about a second flow axis A2 extending in a vertical direction. The second cyclone 120 may include an axial flow, a swirl pipe, a tangential inlet type, and the like.

For example, the second cyclone may include a second cyclone body 122 for generating a cyclone flow about a vertically extending flow axis, a second air inlet 121 formed in the second cyclone body 122, a second dust outlet 125 formed in the second cyclone body 122, and a second air outlet 123 formed in the second cyclone body 122.

The second cyclone body 122 has a shape that generates a cyclone flow around the second flow axis A2 extending in the vertical direction. The second cyclone body 122 may have various shapes such as a cylinder, an elliptical pillar, a cone, and the like. In this embodiment, the second cyclone body 122 is formed in a cylindrical shape having an inner diameter of a lower end smaller than an inner diameter of an upper end.

For example, the second cyclone body 122 is disposed to surround the second flow axis A2, and the upper and lower portions are opened. The opened upper portion of the second cyclone body 122 may be defined as a second air outlet 123 and the opened lower portion of the second cyclone body 122 may be defined as a second dust outlet 125.

The circumferential surface 112a may define a circular or elliptical orbit based on the second flow axis A2 when viewed from above. An inner space defined by the circumferential surface 112a, the upper cover 112b, and the lower cover 112c is the flow space 112d in which the sucked air spirally flows.

The second air inlet 121 is formed in the second cyclone body 122 to provide the air discharged from the first cyclone 110 to the interior of the second cyclone body 122. The second air inlet 121 may communicate with the first air outlet 113. Obviously, the first air outlet 113 and the second air inlet 121 may be connected through a connection space 135 of the upper portion of the upper cover 112b of the first cyclone 110.

The second air inlet 121 may be defined as a space between the rim of the second air outlet 123 and the second cyclone body 122.

The second air inlet 121 is formed in the second cyclone body 122. The second air inlet 121 is formed to horizontally penetrate the second cyclone body 122. The cyclone flow is generated by the traveling direction of the air introduced through the second air inlet 121. Specifically, the second air inlet 121 may be formed to extend in a tangential direction to a circular orbit around the second flow axis A2. The second air inlet 121 may be implemented by a pipe having a certain length. The second air inlet 121 may extend in a direction parallel to the horizontal direction.

The second air inlet 121 may be formed in the upper portion of the second cyclone body 122. Specifically, it is preferable that the second air inlet 121 is located higher than the upper end of the first cyclone body 112 in order to restrict the inflow of large dust from the first cyclone 110.

More preferably, the second air inlet 121 may be located higher than the first air outlet 113, the first dust outlet 115, and the first air inlet 111. The second air inlet 121 may be disposed above the second dust outlet 125 and the second air inlet 121 may be disposed above the second air outlet 123.

Therefore, the air introduced into the second cyclone body 122 through the second air inlet 121 may be discharged to the outside of the second cyclone body 122 after the dust is sufficiently separated from the air.

The second air outlet 123 is formed in the second cyclone body 122 to discharge the air inside the second cyclone body 122 to the outside of the second cyclone body 122. The second air outlet 123 may communicate with the exhaust port.

The second air outlet 123 may be formed in the upper portion of the second cyclone body 122 and opened. For another example, in the second air outlet 123, the lower end of a discharge pipe 123a connected to the exhaust port is located in a position lower than the upper end of the second cyclone body 122 having opened upper and lower sides, and at least a portion of the discharge pipe 123a may be located inside the second cyclone body 122.

The second air outlet 123 may be located lower than the second air inlet 121 and may be located higher than the second dust outlet 125.

At this time, the second air inlet 121 may be defined as a space between the upper end of the second cyclone body 122 and an outer surface of the discharge pipe 123a. The center of the second air outlet 123 may be formed to overlap with the second flow axis A2.

A space between the outer circumferential surface of the discharge pipe 123a and the inner circumferential surface of the second cyclone body 122 is defined as a swirling space 128 in which the inflow air spirals. A guide vane 126 for guiding the air introduced from the second air inlet 121 may be disposed in the swirling space 128.

The guide vane 126 is connected to the second cyclone body 122 to guide the air introduced from the second air inlet 121. The guide vane 126 may form at least a part of a spiral orbit around a flow axis of the second cyclone body 122.

One end of the guide vane 126 may be connected to the inner circumferential surface of the second cyclone body 122 and the other end of the guide vane 126 may be connected to the outer circumferential surface of the discharge pipe 123a.

The second dust outlet 125 is formed in the second cyclone body 122. The second dust outlet 125 is a space in which the dust which is separated while the air in the second cyclone body 122 is cyclone-rotated flows. The dust separated in the second cyclone body 122 is discharged to the outside of the second cyclone body 122 through the second dust outlet 125.

The second dust outlet 125 is formed to penetrate the second cyclone body 122 in the vertical direction. Specifically, the second dust outlet 125 may be disposed to overlap with the second flow axis A2.

The second dust outlet 125 communicates with the second dust container 129. The second dust outlet 125 is connected to the upper end of the second dust container 129 to prevent the dust supplied to the second dust container 129 through the second dust outlet 125 from flowing back to the second cyclone body 122.

The second dust container 129 collects the dust collected in the second cyclone 120, and communicates with the second dust outlet 125. The second dust container 129 is disposed below the second cyclone 120. Specifically, the second dust container 129 may be disposed in the second flow axis A2.

Since the second cyclone 120 separates a smaller dust in comparison with the first cyclone 110, the width and height of the second cyclone 120 is smaller than that of the first cyclone body 112. Therefore, even if the second dust container 129 is disposed below the second cyclone body 122, the height of the cleaner is not increased.

At least a part of the second cyclone 120 and the second dust container 129 may be disposed to overlap with the first dust container 190 in a first direction. At least a part of the second cyclone 120 and the second dust container 129 may be disposed to overlap with the first cyclone body 112 in a second direction intersected with the first flow axis A1. Specifically, the second cyclone 120 and the second dust container 129 may be disposed to overlap with the first cyclone body 112 in the left-right direction, and may overlap with the first dust container 190 in the front-rear direction.

The second cyclone 120 may be disposed inside or outside the first cyclone body 112. FIG. 4 to FIG. 7 show that the second cyclone 120 is disposed outside the first cyclone.

Referring to FIG. 6B, the air flow of the cyclone type dust collector 100 of the present invention will be described.

Air is supplied through the first air inlet 111 located in the lower portion of the first cyclone body 112. The air supplied through the first air inlet 111 performs a spiral movement of rotating while moving upward in the first cyclone body 112, so that the dust is separated. The separated dust is collected in the first dust container 190 through the first dust outlet 115 located in the upper portion of the first cyclone body 112. The dust-separated air is discharged through the first air outlet 113.

The air discharged through the first air outlet 113 is supplied to the second air inlet 121 through the connection space 135. The air supplied to the second air inlet 121 is supplied to the inside of the second cyclone body 122 while being downwardly rotated by the guide vane 126 so that the dust is separated. The separated dust is collected in the second dust container 129 through the second dust outlet 125. The dust-separated air is discharged through the second air outlet 123.

FIG. 8 is a perspective view of a cyclone type dust collector 100 according to another embodiment of the present invention, FIG. 9 is a cross-sectional view of the cyclone type dust collector 100 of FIG. 8, and FIG. 10 is a view illustrating a flow of air in the cyclone type dust collector 100 of FIG. 8.

The cyclone type dust collector 100 according to another embodiment differs from the embodiment of FIG. 4 in that the second cyclone 120 is located inside the first cyclone 110. When the second cyclone 120 is located inside the first cyclone 110, there is an advantage that an area on the plane occupied by the cyclone type dust collector 100 may be reduced.

Hereinafter, the cyclone type dust collector 100 according to another embodiment will be described with reference to differences from the embodiment shown in FIG. 4, and a configuration of no special description will be considered as the same as the embodiment shown in FIG. 4.

Referring to FIG. 8 to FIG. 10, in the cyclone type dust collector 100 according to another embodiment, the second cyclone 120 and the second dust container 129 may be located inside the first cyclone body 112.

The second dust container 129 may be connected to the lower portion of the second cyclone 120 and the combined height of the second cyclone 120 and the second dust container 129 may be equal to the height of the first cyclone body 112, or may be lower than the height of the first cyclone body 112.

A plurality of second cyclones 120 may be provided, and the second air outlet 123 of any one of the plurality of second cyclones 120 may be disposed in the first flow axis A1.

A boundary body 181 may be disposed inside the circumferential surface 112a of the first cyclone body 112 to surround the first flow axis A1. The boundary body 181 defines a space in which the second cyclone 120 and the second dust container 129 are located inside the first cyclone body 112, and forms a part of the second dust container 129.

Specifically, the boundary body 181 defines a circumference which surrounds the first flow axis A1, and defines the flow space 112d in the first cyclone body 112. The upper end of the boundary body 181 is connected to the upper cover 112b and the lower end of the boundary body 181 is connected to the lower cover 112c.

The boundary body 181 is provided with a first air outlet 113-1. The first air outlet 113-1 may be defined as a plurality of holes. The first air outlet 113-1 may be disposed in the upper area of the boundary body 181.

At least one second cyclone 120 and second dust container 129 are disposed in an inner space defined by the boundary body 181. The second dust outlet 125 may be disposed in a position lower than the first dust outlet 115 and the first air outlet 113-1.

Air is supplied through the first air inlet 111 located in the lower portion of the first cyclone body 112. The air supplied through the first air inlet 111 performs a spiral movement of rotating while moving upward in the first cyclone body 112, so that the dust is separated. The separated dust is collected in the first dust container 190 through the first dust outlet 115 located in the upper portion of the first cyclone body 112. The dust-separated air is discharged through the first air outlet 113-1 formed in the boundary body 181.

The air discharged through the first air outlet 113-1 is supplied to the second air inlet 121. The air supplied to the second air inlet 121 is supplied to the inside of the second cyclone body 122 while downwardly rotating by the guide vane 126 so that the dust is separated. The separated dust is collected in the second dust container 129 through the second dust outlet 125. The dust-separated air is discharged through the second air outlet 123.

As described above, the present invention has an advantage in that dust collection efficiency can be maintained while implementing a slim design having a low height.

In addition, the present invention has an advantage in that a space having a low height such as a space between furniture and a floor surface can be easily cleaned.

In addition, the present invention has an advantage in that the dust container is disposed to overlap outside the cyclone in the horizontal direction so that the size of the dust container can be freely changed irrespective of the capacity and shape of the cyclone.

Further, the present invention has an advantage in that dust collection efficiency can be maintained, even if the air inlet of the cyclone is disposed below the air outlet and the dust outlet so that the dust container is not disposed below the cyclone.

Hereinabove, although the present invention has been described with reference to exemplary embodiments and the accompanying drawings, the present invention is not limited thereto, but may be variously modified and altered by those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention claimed in the following claims.

Claims

A cyclone type dust collector comprising:

a first cyclone comprising a first cyclone body configured to generate a cyclone flow around a flow axis extending in a vertical direction, a first air inlet formed in the first cyclone body, a first dust outlet formed in the first cyclone body, and a first air outlet formed in the first cyclone body; and

a first dust container configured to communicate with the first dust outlet and collect dust,

wherein at least a part of the first cyclone body is disposed to overlap with the first dust container in a first direction intersected with the flow axis.
The cyclone type dust collector of claim 1, wherein the first air inlet is disposed below the first dust outlet.
The cyclone type dust collector of claim 1, wherein the first air outlet is disposed above the first air inlet.
The cyclone type dust collector of claim 3, wherein the first air outlet is disposed above the first dust outlet.
The cyclone type dust collector of claim 3, wherein the first air inlet and the first dust outlet are formed in a circumferential surface of the first cyclone body,

wherein the first air outlet is formed in an upper cover connected to an upper end of the circumferential surface of the first cyclone body.
The cyclone type dust collector of claim 1, further comprising a mesh cone disposed between an interior of the first cyclone body and the first air outlet.
The cyclone type dust collector of claim 1, further comprising:

at least one second cyclone configured to perform a cyclone flow for an air discharged from the first cyclone around a flow axis extending in a vertical direction; and

a second dust container disposed below the second cyclone to collect dust collected in the second cyclone.
The cyclone type dust collector of claim 7, wherein at least a part of the second cyclone and the second dust container are disposed to overlap with the first dust container in the first direction.
The cyclone type dust collector of claim 7, wherein at least a part of the second cyclone and the second dust container are disposed to overlap with the first cyclone body in a second direction intersected with the first direction and the flow axis.
The cyclone type dust collector of claim 7, wherein the second cyclone comprises a second cyclone body configured to generate a cyclone flow around a flow axis extending in a vertical direction, a second air inlet formed in the second cyclone body, a second dust outlet formed in the second cyclone body, and a second air outlet formed in the second cyclone body.
The cyclone type dust collector of claim 10, wherein the second air inlet communicates with the first air outlet and is located higher than an upper end of the first cyclone body.
The cyclone type dust collector of claim 10, wherein the second air outlet and the second air inlet are disposed above the second dust outlet.
The cyclone type dust collector of claim 10, further comprising a guide vane which is connected to the second cyclone body and guides air introduced from the second air inlet.
The cyclone type dust collector of claim 13, wherein the guide vane forms at least a part of a spiral orbit around a flow axis of the second cyclone body.
The cyclone type dust collector of claim 7, wherein the second cyclone and the second dust container are located inside the first cyclone body.
The cyclone type dust collector of claim 15, wherein at least a part of the second cyclone and the second dust container are disposed to overlap with the first dust container in the first direction.
A cyclone type dust collector comprising:

a first cyclone configured to perform a cyclone flow for an introduced air around a flow axis extending in a vertical direction;

a first dust container configured to collect dust collected in the first cyclone;

at least one second cyclone configured to perform a cyclone flow for air discharged from the first cyclone around a flow axis extending in a vertical direction; and

a second dust container which is disposed below the second cyclone and collects dust collected in the second cyclone,

wherein the first cyclone, the second cyclone, and the second dust container are disposed to overlap with the first dust container in a first direction intersected with the flow axis.
A cleaner comprising:

a cleaner main body;

a cyclone type dust collector disposed in the cleaner main body; and

a wheel unit configured to move the cleaner main body,

wherein the cyclone type dust collector comprises:

a first cyclone comprising a first cyclone body configured to generate a cyclone flow around a flow axis extending in a vertical direction, a first air inlet formed in the first cyclone body, a first dust outlet formed in the first cyclone body, and a first air outlet formed in the first cyclone body; and

a first dust container configured to communicate with the first dust outlet and collect dust,

wherein at least a part of the first cyclone body is disposed to overlap with the first dust container in a first direction intersected with the flow axis.
The cyclone type dust collector of claim 18, further comprising:

at least one second cyclone configured to perform a cyclone flow for an air discharged from the first cyclone around a flow axis extending in a vertical direction; and

a second dust container disposed below the second cyclone to collect dust collected in the second cyclone.
The cyclone type dust collector of claim 19, wherein at least a part of the second cyclone and the second dust container are disposed to overlap with the first dust container in the first direction.