Vacuum cleaner

Abstract

The present invention relates to a vacuum cleaner comprising: a main body; a dust container coupled to the main body; a suction unit for guiding air into the dust container; a first cyclone unit for separating dust from the air suctioned through the suction unit; a second cyclone unit for separating the dust from the air discharged from the first cyclone unit; and a filter unit for separating the dust from the air discharged from the second cyclone unit, wherein the second cyclone unit is coupled to the main body so as to be detachable therefrom while coupled to the filter unit.

Description

vacuum cleaner

[0001] The present invention relates to a vacuum cleaner.

[0002]

[0003] In general, a vacuum cleaner is a home appliance that uses electricity to suck up air and fills a dust bin inside the product with small pieces of trash or dust. It is commonly called a vacuum cleaner.

[0004] These vacuum cleaners can be categorized into manual vacuum cleaners, which the user moves to clean, and automatic vacuum cleaners, which clean by moving around on their own. Manual vacuum cleaners can be categorized by type, including canister vacuum cleaners, upright vacuum cleaners, handheld vacuum cleaners, and stick vacuum cleaners.

[0005] In the past, canister-type vacuum cleaners were widely used in household vacuum cleaners, but recently, handheld vacuum cleaners and stick vacuum cleaners that provide the dust bin and vacuum cleaner body as an integrated unit, which improves convenience, are being widely used.

[0006] Canister-type vacuum cleaners have a main body and suction inlet connected by a rubber hose or pipe, and in some cases, a brush can be inserted into the suction inlet for use.

[0007] Handheld vacuum cleaners maximize portability. They are lightweight, but their short length limits the cleaning area they can be used in while seated. Therefore, they are used for cleaning small areas, such as desks, sofas, or inside cars.

[0008] Stick vacuums can be used standing up, allowing for cleaning without bending down. This makes them ideal for moving around and cleaning large areas. While handheld vacuums are suitable for cleaning tight spaces, stick vacuums can clean wider areas and reach high, out-of-reach places. Recently, stick vacuums have been offered in modular configurations, allowing users to actively adapt the vacuum to suit a variety of applications.

[0009] In this regard, a vacuum cleaner is disclosed in the prior art document, Republic of Korea Patent Publication No. 10-2018-0023273.

[0010] In the case of the above prior art document, a second cyclone unit for separating dust from the air discharged from the first cyclone unit and a pre-filter for filtering dust from the air discharged from the second cyclone unit are provided. In addition, the second cyclone unit and the pre-filter located inside the vacuum cleaner need to be cleaned separately because dust accumulates on their surfaces when the suction motor is driven.

[0011] At this time, according to the above-mentioned prior art, in order to separate the second cyclone unit, the user must separate the dust bin and then separate the second cyclone unit, and in order to separate the pre-filter, the user must open the filter frame of the filter mechanism and pull the pre-filter upward.

[0012] Therefore, in order for the user to separate and clean the second cyclone unit and the pre-filter, there was the inconvenience of having to separate both the dust bin and the filter frame and then separate the second cyclone unit and the pre-filter.

[0013]

[0014] The present invention was created to improve the problems of the conventional vacuum cleaner as described above, and the problem to be solved is to provide a vacuum cleaner in which the second cyclone part is separated from the main body as an integral part together with the filter part.

[0015] In addition, the present invention aims to provide a cleaner in which the filter part is detachably connected to the second cyclone part, so that the filter part can be separated from the second cyclone part as needed after the second cyclone part is separated from the main body.

[0016] In addition, the present invention aims to provide a cleaner that can prevent the filter unit from being separated from the second cyclone unit when the second cyclone unit is separated from the main body, since the rotation direction for separating the second cyclone unit from the main body and the rotation direction for separating the filter unit from the second cyclone unit are opposite to each other.

[0017]

[0018] In order to solve the above-described problem, a vacuum cleaner according to the present invention comprises: a main body; a dust bin coupled to the main body; a suction part guiding air into the interior of the dust bin; a first cyclone part separating dust from air sucked through the suction part; a second cyclone part separating dust from air discharged from the first cyclone part; and a filter part separating dust from air discharged from the second cyclone part; wherein the second cyclone part can be detachably coupled to the main body in a state coupled to the filter part.

[0019] The above filter unit can be detachably connected to the second cyclone unit.

[0020] The rotation direction for separating the second cyclone unit from the main body and the rotation direction for separating the filter unit from the second cyclone unit may be opposite to each other.

[0021] The second cyclone part may include a first coupling protrusion formed to protrude outward; and the main body may include a first coupling groove that is coupled with the first coupling protrusion when the second cyclone part rotates relative to the main body.

[0022] The above body may include a first guide groove that guides the rotation of the second cyclone part so that the first coupling protrusion is coupled to the first coupling groove.

[0023] The above first joining groove may be formed deeper than the above guide groove.

[0024] The filter part may include a second coupling protrusion formed to protrude outward; and the second cyclone part may include a second coupling groove that is coupled with the second coupling protrusion when the filter part rotates relative to the second cyclone part.

[0025] The second cyclone section may include a second guide groove that guides rotation of the filter section so that the second coupling protrusion is coupled to the second coupling groove.

[0026] The above second joining groove may be formed deeper than the second cyclone section.

[0027] The vacuum cleaner according to the present invention may further include a first sealer disposed in the second cyclone section and sealing a space between the second cyclone section and the main body while the second cyclone section is coupled to the main body.

[0028] The vacuum cleaner according to the present invention may further include a second sealer disposed in the filter section and sealing a space between the filter section and the main body while the second cyclone section is coupled to the main body.

[0029]

[0030] As described above, the vacuum cleaner according to the present invention has the effect of being able to be separated integrally with the filter unit when the second cyclone unit is separated from the main body.

[0031] In addition, since the filter part of the present invention is detachably connected to the second cyclone part, the filter part can be separated from the second cyclone part as needed after the second cyclone part is separated from the main body.

[0032] In addition, the present invention has an effect of preventing the filter part from being separated from the second cyclone part when the second cyclone part is separated from the main body, since the rotation direction for separating the second cyclone part from the main body and the rotation direction for separating the filter part from the second cyclone part are opposite to each other.

[0033]

[0034] Figure 1 is a perspective view of a vacuum cleaner according to an embodiment of the present invention.

[0035] Figure 2 is an exploded view of a vacuum cleaner according to an embodiment of the present invention.

[0036] Figure 3 is a cross-sectional view of a vacuum cleaner according to an embodiment of the present invention.

[0037] FIG. 4 is a drawing for explaining the detailed configuration of the second cyclone section and filter section of the vacuum cleaner according to an embodiment of the present invention.

[0038] Figure 5 is a drawing for explaining in detail area 1 shown in Figure 4.

[0039] FIG. 6 is a drawing for explaining a state in which the second cyclone unit and the filter unit are removed from a vacuum cleaner according to an embodiment of the present invention.

[0040] Figure 7 is a drawing for explaining in detail the two areas shown in Figure 6.

[0041] FIG. 8a is a drawing for explaining how a dust bin of a vacuum cleaner according to an embodiment of the present invention rotates relative to the main body.

[0042] FIG. 8b is a drawing for explaining how the dust bin of a vacuum cleaner according to an embodiment of the present invention is separated from the main body.

[0043] FIG. 8c is a drawing for explaining a state in which the second cyclone part of the vacuum cleaner according to an embodiment of the present invention rotates relative to the main body while being combined with the filter part.

[0044] FIG. 8d is a drawing for explaining a state in which the second cyclone part of the vacuum cleaner according to an embodiment of the present invention is separated from the main body while being combined with the filter part.

[0045] FIG. 8e is a drawing for explaining how the filter part of the vacuum cleaner according to an embodiment of the present invention rotates with respect to the second cyclone part.

[0046] FIG. 8f is a drawing for explaining how the filter unit according to an embodiment of the present invention is separated from the second cyclone unit.

[0047]

[0048] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0049] The present invention is susceptible to various modifications and embodiments. Specific embodiments are illustrated in the drawings and described in detail in the detailed description. This is not intended to limit the invention to specific embodiments, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention.

[0050] The terminology used in this application is solely for the purpose of describing specific embodiments and is not intended to limit the present invention. Singular expressions may include plural expressions, unless the context clearly dictates otherwise.

[0051] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries, such as those defined in the present application, may be interpreted to have a meaning consistent with their meaning in the context of the relevant technology, and, unless explicitly defined herein, may not be interpreted in an idealized or overly formal sense.

[0052]

[0053] FIG. 1 is a perspective view of a vacuum cleaner according to an embodiment of the present invention, FIG. 2 is an exploded view of a vacuum cleaner according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view of a vacuum cleaner according to an embodiment of the present invention.

[0054] First, the structure of the vacuum cleaner (100) will be described with reference to FIGS. 1 to 3 as follows.

[0055] The vacuum cleaner (100) may refer to a vacuum cleaner that is manually operated by a user. For example, the vacuum cleaner (100) may refer to a handheld vacuum cleaner or a stick vacuum cleaner.

[0056] Meanwhile, in one embodiment of the present invention, the direction of the cleaner (100) can be defined based on the time when the bottom surface (lower surface) of the battery housing (130) is placed on the ground.

[0057] At this time, the front may refer to the direction in which the suction unit (112) is arranged based on the suction motor (114), and the rear may refer to the direction in which the air discharge cover (115) is arranged based on the suction motor (114). In addition, when looking at the filter unit (300) from the suction motor (114), the direction in which it is arranged on the right may be referred to as the right, and the direction in which it is arranged on the left may be referred to as the left. In addition, in one embodiment of the present invention, the upper and lower sides may be defined along the direction perpendicular to the ground when the bottom surface (lower surface) of the battery housing (130) is placed on the ground.

[0058] The vacuum cleaner (100) may include a main body (110). The main body (110) may include a main body housing (111), a suction unit (112), a first cyclone unit (113), a suction motor (114), an air discharge cover (115), a handle (116), and an operating unit (117).

[0059] The main body housing (111) may form the exterior of the vacuum cleaner (100). The main body housing (111) may provide a space capable of accommodating a suction motor (114) and a filter (not shown) therein. The main body housing (111) may be configured in a shape similar to a cylinder.

[0060] The suction part (112) may protrude outwardly from the main body housing (111). For example, the suction part (112) may be formed in a cylindrical shape with an open interior. The suction part (112) may be coupled to an extension pipe (150). The suction part (112) may provide a path through which air containing dust may flow. The suction part (112) may be coupled to the main body (110) such that its approximate center is located at the boundary between the dust bin (120) and the main body housing (111).

[0061] Meanwhile, in the present embodiment, a virtual line penetrating the interior of a suction part (112) configured in a cylindrical shape can be formed. At this time, the virtual line may mean the longitudinal axis of the suction path.

[0062] A vacuum cleaner (100) according to an embodiment of the present invention may include at least one cyclone unit capable of separating dust by cyclone flow. For example, the vacuum cleaner (100) may include a first cyclone unit (113) and a second cyclone unit (200).

[0063] The first cyclone section (113) is a configuration that applies the principle of a dust collector that uses centrifugal force to separate dust sucked into the interior of the main body (110) through the suction section (112). That is, the first cyclone section (113) refers to a space in which a cyclone flow that rotates along the inner surface of the dust bin (120) occurs, and the first cyclone section (113) may refer to a portion of the space inside the dust bin (120).

[0064] The first cyclone unit (113) can be communicated with the suction unit (112). The first cyclone unit (113) can separate dust sucked into the interior through the suction unit (112). The space inside the first cyclone unit (113) can be communicated with the space inside the dust bin (120).

[0065] The cyclone flow generated in the first cyclone section (113) may be due to the suction force of the suction motor (114).

[0066] The cyclone flow generated in the first cyclone section (113) can be formed between the inner surface of the dust bin (120) and the outer surface of the case (211) described later. That is, the cyclone flow can be formed inside the first cyclone section (113).

[0067] The space inside the first cyclone section (113) can be communicated with the suction section (112). Air and dust sucked through the suction section (112) flow along the inner surface of the first cyclone section (113), thereby generating a cyclonic flow in the inner space of the first cyclone section (113).

[0068] For example, the cyclone flow generated in the first cyclone section (113) may be formed to surround the inner circumference of the dust bin (120) in a circular shape. The air sucked in through the suction section (112) flows in a circular shape along the inner circumference of the dust bin (120) based on the central axis (a1) of the dust bin (120), thereby allowing a cyclone flow to occur in the inner space of the first cyclone section (113).

[0069] Specifically, when the axis (a2) of the cyclone flow generated in the first cyclone section (113) is arranged vertically downward in the direction of gravity, the air sucked through the suction section (112) can flow in a circular shape along the inner surface of the dustbin (120) based on the central axis (a1) of the dustbin (120). Alternatively, when the axis (a2) of the cyclone flow generated in the first cyclone section (113) is arranged parallel to the ground, the air sucked through the suction section (112) can flow in a circular shape along the inner surface of the dustbin (120) based on the central axis (a1) of the dustbin (120).

[0070] As another example, the cyclone flow generated in the first cyclone section (113) may be formed in a spiral shape along the inner circumference of the dustbin (120). That is, the air sucked in through the suction section (112) flows in a spiral shape along the inner circumference of the dustbin (120), thereby generating a cyclone flow in the internal space of the first cyclone section (113).

[0071] Specifically, when the axis (a2) of the cyclone flow generated in the first cyclone section (113) is arranged to be inclined with respect to the ground, the air sucked through the suction section (112) can flow in a spiral shape along the inner circumference of the dust bin (120).

[0072] The vacuum cleaner (100) according to an embodiment of the present invention may include a second cyclone unit (200) that separates dust again from the air discharged from the first cyclone unit (113). That is, the second cyclone unit (200) can filter out small dust particles that the first cyclone unit (113) and the filter module (210) could not filter out from the air that passed through the first cyclone unit (113) and the filter module (210).

[0073] At this time, the second cyclone unit (200) may be positioned inside the first cyclone unit (113) so as to minimize the size of the vacuum cleaner (100). The second cyclone unit (200) may be positioned below the suction motor (114). Specifically, the second cyclone unit (200) may be positioned inside the filter module (210). That is, the first cyclone unit (113) and the second cyclone unit (200) may be positioned inside the dust bin (120) with the filter module (210) interposed therebetween.

[0074] The second cyclone unit (200) may include a plurality of cyclone bodies (220) arranged in parallel. Accordingly, the air discharged from the first cyclone unit (113) may pass through the filter module (210) and be divided and passed through the plurality of cyclone bodies (220). That is, the cyclone flow generated in the second cyclone unit (113) may be formed inside the cyclone body (220).

[0075] Meanwhile, the second cyclone section (200) may also include a single cyclone body (220), and in this case, the axis (a2) of the cyclone flow generated in the second cyclone section (200) may extend in the vertical direction.

[0076] In addition, the axis (a2) of the cyclone flow generated in the first cyclone section (200) may also extend in the vertical direction. Accordingly, the axis (a2) of the cyclone flow generated in the first cyclone section (113) and the axis (a2) of the cyclone flow generated in the second cyclone section (200) may form a coaxial line in the vertical direction or may be formed in parallel.

[0077] A storage member (213) for storing dust separated from the second cyclone unit (200) may be placed inside the dust bin (120). The storage member (213) may be connected to the lower side of the case (211) and may be in contact with the upper surface of the discharge cover (122). In addition, the lower side of the storage member (213) may be open.

[0078] The storage member (213) can divide the space inside the dust bin (120) into a first dust storage unit where dust separated from the first cyclone unit (113) is stored, and a second dust storage unit where dust separated from the second cyclone unit (200) is stored.

[0079] Accordingly, the space between the storage member (213) and the dust bin (120) can be defined as the first dust storage unit, and the lower internal space of the storage member (213) can be defined as the second dust storage unit.

[0080] The discharge cover (122) can open and close the first dust storage unit and the second dust storage unit together. That is, the first dust storage unit and the second dust storage unit can be exposed together to the outside.

[0081] The suction motor (114) can generate a suction force to suck in air. The suction motor (114) can be accommodated within the main body housing (111). The suction motor (114) can generate a suction force by rotation. For example, the suction motor (114) can be provided in a shape similar to a cylinder.

[0082] At this time, cyclone flow may be generated by the suction force of the suction motor (114).

[0083] Specifically, when the suction motor (114) is operated, air sucked through the suction section (112) by the suction force of the suction motor (114) can generate a cyclone flow in the first cyclone section (113) and / or the second cyclone section (200).

[0084] Meanwhile, in this embodiment, a rotation axis (a3) ​​of a virtual suction motor can be formed by extending the rotation axis of the suction motor (114).

[0085] The suction motor (114) may be located inside the main body housing (111). And, at least a portion of the suction motor (114) may be located above the second cyclone section (200). Accordingly, the suction motor (114) may be located above the dust bin (120).

[0086] The suction motor (114) can be connected to the outlet of the second cyclone section (200).

[0087] The axis (a2) of the cyclone flow of the first cyclone section (113) can pass through the suction motor (114).

[0088] In an embodiment of the present invention, when the suction motor (114) is positioned above the second cyclone section (200), the air discharged from the second cyclone section (200) can flow directly toward the suction motor (114), so that the flow path between the second cyclone section (200) and the suction motor (114) can be minimized.

[0089] An air exhaust cover (115) may be placed on one axial side of the main body housing (111). A filter for filtering air may be accommodated in the air exhaust cover (115). For example, a HEPA filter may be accommodated in the air exhaust cover (115).

[0090] An air discharge port for discharging air sucked in by the suction force of the suction motor (114) may be formed in the air discharge cover (115).

[0091] A flow guide may be arranged in the air discharge cover (115). The flow guide may guide the flow of air discharged through the air discharge port.

[0092] The handle (116) can be gripped by the user. For example, the handle (116) may be formed in a shape similar to a cylinder. Alternatively, the handle (116) may be formed in a curved cylinder shape. The handle (116) may be positioned at a predetermined angle with respect to the main body housing (111), the suction motor (114), or the first cyclone unit (113).

[0093] The handle (116) may include a grip portion formed in a pillar shape so that a user can grip it, a first extension portion connected to one longitudinal (axial) end of the grip portion and extending toward the suction motor (114), and a second extension portion connected to the other longitudinal (axial) end of the grip portion and extending toward the dust bin (120).

[0094] Meanwhile, in this embodiment, a virtual gripping portion penetration line can be formed by extending along the longitudinal direction of the gripping portion (axial direction of the column) and penetrating the gripping portion.

[0095] For example, the grip portion penetration line may be a virtual line formed inside a cylindrical handle (116), and may be a virtual line formed parallel to at least a portion of the outer surface (outer circumference) of the grip portion.

[0096] The upper surface of the handle (116) may form a portion of the outer appearance of the upper surface of the vacuum cleaner (100). This prevents the components of the vacuum cleaner (100) from coming into contact with the user's arm when the user holds the handle (116).

[0097] The first extension portion may extend from the grip portion toward the main body housing (111) or the suction motor (114). At least a portion of the first extension portion may extend in a horizontal direction.

[0098] The second extension may extend from the phasing portion toward the dust bin (120). At least a portion of the second extension may extend horizontally.

[0099] The control unit (117) may be positioned on the main body housing (111). The control unit (117) may be positioned on the outer surface of the main body housing (111). The control unit (117) may be composed of a plurality of buttons, and when a user presses a corresponding button, a corresponding command may be executed. The user may input an operation or stop command for the vacuum cleaner (100) through the control unit (117).

[0100] The vacuum cleaner (100) may include a dust bin (120). The dust bin (120) may be connected to a suction unit (112). A first cyclone unit (113) may be located inside the dust bin (120). The dust bin (120) may store dust separated from the first cyclone unit (113).

[0101] The dustbin (120) may include a dustbin body (121), a discharge cover (122), a dustbin compression lever (not shown), and a compressor (not shown).

[0102] The dustbin body (121) can provide a space for storing dust separated from the first cyclone section (113). For example, the dustbin body (121) can be formed in a shape similar to a cylinder.

[0103] Meanwhile, in the present embodiment, a virtual dustbin central axis (a1) may be formed by penetrating the interior (internal space) of the dustbin body (121) and extending along the longitudinal direction of the dustbin body (121) (meaning the axial direction in the cylindrical dustbin body (121)).

[0104] The lower surface (bottom surface) of the dustbin body (121) may be partially open. In addition, a lower extension (not shown) may be formed on the lower surface (bottom surface) of the dustbin body (121). The lower extension may be formed to block a portion of the lower surface of the dustbin body (121).

[0105] The dustbin (120) may include a discharge cover (122). The discharge cover (122) may be placed on the lower surface of the dustbin (120).

[0106] The discharge cover (122) may be provided to open and close one end in the longitudinal direction of the dustbin body (121). Specifically, the discharge cover (122) may selectively open and close the lower part of the dustbin (120) that opens downward.

[0107] The discharge cover (122) may include a cover body and a hinge part. The cover body may be formed to block a portion of the lower surface of the dustbin body (121). The cover body may rotate downward based on the hinge part. The hinge part may be arranged adjacent to the battery housing (130). A torsion spring may be provided in the hinge part. Therefore, when the discharge cover (122) is separated from the dustbin body (121), the cover body may be supported in a state in which it is rotated by a predetermined angle or more about the hinge part as an axis in the dustbin body (121) by the elastic force of the torsion spring.

[0108] The discharge cover (122) can be coupled to the dust bin (120) through a hook connection. Meanwhile, the discharge cover (122) can be separated from the dust bin (120) through a coupling lever (122c). The coupling lever (122c) can be arranged at the front of the dust bin (120). Specifically, the coupling lever (122c) can be arranged on the outer surface of the front side of the dust bin (120). When an external force is applied, the coupling lever (122c) can elastically deform a hook formed extending from the cover body to release the hook connection between the cover body and the dust bin body (121).

[0109] When the discharge cover (122) is closed, the lower surface of the dust bin (120) may be blocked (sealed) by the discharge cover (122) and the lower extension.

[0110] The dustbin (120) may include a dustbin compression lever. The dustbin compression lever may be disposed outside the dustbin (120). The dustbin compression lever may be disposed outside the dustbin (120) to move up and down. The dustbin compression lever may be connected to a compressor (not shown). When the dustbin compression lever moves downward due to an external force, the compressor (not shown) may also move downward. This may provide convenience to the user. The compressor (not shown) and the dustbin compression lever may return to their original positions by an elastic member (not shown). Specifically, when the external force applied to the dustbin compression lever is removed, the elastic member may move the dustbin compression lever and the compressor (not shown) upward.

[0111] A compressor (not shown) may be placed inside the dustbin body (121). The compressor may move within the internal space of the dustbin body (121). Specifically, the compressor may move up and down within the dustbin body (121). Through this, the compressor may compress dust within the dustbin body (121) downward. In addition, when the discharge cover (122) is separated from the dustbin body (121) and the lower portion of the dustbin (120) is opened, the compressor may move from the upper portion to the lower portion of the dustbin (120) to remove foreign substances such as residual dust within the dustbin (120). Through this, the suction power of the vacuum cleaner may be improved by preventing residual dust from remaining within the dustbin (120). In addition, by preventing residual dust from remaining within the dustbin (120), an unpleasant odor caused by the residual matter may be eliminated.

[0112] The vacuum cleaner (100) may include a battery housing (130). The battery housing (130) may accommodate a battery (140). The battery housing (130) may be positioned at the lower side of the handle (116). For example, the battery housing (130) may have a hexahedral shape with an open lower side. The upper surface of the battery housing (130) may be connected to the handle (116).

[0113] The battery housing (130) may include a receiving portion that opens downward. The battery (140) may be removed through the receiving portion of the battery housing (130).

[0114] The battery housing (130) may be provided with battery terminals exposed to the outside.

[0115] When the battery terminal of the battery housing (130) and the external charging terminal (not shown) are combined, power can be supplied to the battery (140) through the battery terminal. The battery terminal can be arranged spaced apart from each other on the lower surface of the battery housing (130).

[0116] The vacuum cleaner (100) may include a battery (140).

[0117] For example, the battery (140) may be detachably coupled to the vacuum cleaner (100). The battery (140) may be detachably coupled to the battery housing (130). For example, the battery (140) may be inserted into the interior of the battery housing (130) from the lower portion of the battery housing (130). With such a configuration, the portability of the vacuum cleaner (100) may be improved.

[0118] In contrast, the battery (140) may be integrally provided inside the battery housing (130). In this case, the lower surface of the battery (140) is not exposed to the outside.

[0119] The battery (140) stores electric energy and can supply power to each component including the suction motor (114) of the vacuum cleaner (100). The battery (140) can be placed at the bottom of the handle (116). The battery (140) can be placed at the bottom of the dustbin (120). That is, the suction motor (114) and the battery (140) are placed so as not to overlap in the front-back direction, and their heights can also be different. With respect to the handle (116), the suction motor (114), which is heavier, is placed at the top of the handle (116), and the battery (140), which is lighter, is placed at the bottom of the handle (116), so that the weight of the entire vacuum cleaner (100) can be evenly distributed. This can prevent the user's wrist from being strained when the user holds the handle (116) and cleans.

[0120] In an embodiment, when the battery (140) is coupled to the battery housing (130), the lower surface of the battery (140) may be exposed to the outside. When the vacuum cleaner (100) is placed on the floor, the battery (140) may be placed on the floor, so that the battery (140) can be immediately separated from the battery housing (130). In addition, since the lower surface of the battery (140) is exposed to the outside and comes into direct contact with the external air of the battery (140), the cooling performance of the battery (140) may be improved.

[0121] Meanwhile, when the battery (140) is integrally fixed to the battery housing (130), the structure for attaching and detaching the battery (140) and the battery housing (130) can be reduced, so the overall size of the vacuum cleaner (100) can be reduced and its weight can be reduced.

[0122] The vacuum cleaner (100) may include an extension tube (150). The extension tube (150) may be connected to a cleaning module. The extension tube (150) may be connected to a main body (110). The extension tube (150) may be connected to a suction portion (112) of the main body (110). The extension tube (150) may be formed in a long cylindrical shape.

[0123] The main body (110) can be connected to an extension pipe (150). The main body (110) can be connected to a cleaning module through the extension pipe (150). The main body (110) can generate suction force through a suction motor (114) and provide suction force to the cleaning module through the extension pipe (150). External dust can be introduced into the main body (110) through the cleaning module and the extension pipe (150).

[0124] The vacuum cleaner (100) may include a cleaning module (not shown). The cleaning module may be connected to an extension tube (150). Accordingly, external air may be drawn into the main body (110) of the vacuum cleaner (100) through the cleaning module and the extension tube (150) by the suction force generated in the main body (110) of the vacuum cleaner (100).

[0125] The vacuum cleaner (100) may include a cleaning member (160). The cleaning member (160) may be placed in the filter receiving portion (111a) of the main body housing (111). The cleaning member (160) may sweep away the surface of the pre-filter (310) where dust has accumulated while moving along the length direction of the pre-filter (310). The cleaning member (160) may be connected to a lever (not shown) that is slidably placed on the outside of the main body (110). Through this, a user may slide the lever (not shown) to sweep away dust accumulated on the surface of the pre-filter (310).

[0126] Meanwhile, the vacuum cleaner according to an embodiment of the present invention may include a second cyclone unit (200).

[0127] The second cyclone unit (200) may be arranged at least partially inside the first cyclone unit (113) and may separate dust from the air discharged from the first cyclone unit (113). After the dust is separated from the air by the first cyclone unit (113), the air discharged from the first cyclone unit (113) may flow into the second cyclone unit (200) along the flow path.

[0128] The second cyclone section (200) may be formed by a set of axial cyclones configured to separate dust from air flowing in the axial direction. The set of axial cyclones may include a cyclone body (220) and a dust separation unit (230).

[0129] The second cyclone unit (200) may include a filter module (210), a cyclone body (220), a dust separation unit (230), and a guide vane (not shown).

[0130] The filter module (210) can filter the air discharged from the first cyclone unit (113). The filter module (210) can guide the air, from which dust has been separated while passing through the first cyclone unit (113), to the second cyclone unit (200).

[0131] The filter module (210) may include a case (211) and a mesh filter (212).

[0132] The case (211) may be placed inside the dustbin (120). The case (211) may be placed inside the first cyclone unit (113). A space may be formed inside the case (211). A second cyclone unit (200) may be placed inside the case (211).

[0133] The case (211) may be formed in a cylindrical shape, although this is not limited to the shape.

[0134] The central axis (a4) of the case (211) can extend in the vertical direction. The central axis (a4) of the case (211) can extend along the longitudinal direction of the case (211).

[0135] For example, the central axis (a4) of the case (211) may be formed coaxially with the axis (a2) of the cyclone flow generated in the first cyclone section (113). As another example, the central axis (a4) of the case (211) may be formed parallel to the axis (a2) of the cyclone flow generated in the first cyclone section (113). As yet another example, the central axis (a4) of the case (211) may be formed coaxially with the rotational axis (a3) ​​of the suction motor (114).

[0136] The mesh filter (212) can guide air into the interior of the case (211).

[0137] The mesh filter (212) may be placed in the case (211). The mesh filter (212) may mean a part of the case (211). For example, the case (211) may mean a pair of members each connected to the upper and lower edges of the mesh filter (212).

[0138] The mesh filter (212) may have a plurality of holes having a predetermined diameter. Accordingly, large foreign substances contained in the air discharged from the first cyclone section (113) can be filtered by the mesh filter (212).

[0139] Air passing through the mesh filter (212) can be introduced into the second cyclone section (200) placed inside the case (211).

[0140] At this time, the outer side and / or outside of the case (211) may mean the direction facing the first cyclone unit (113) based on the case (211), and the inner side and / or inside of the case (211) may mean the direction facing the second cyclone unit (200) based on the case (211).

[0141] The cyclone body (220) is configured to apply the principle of a dust collector that utilizes centrifugal force to separate dust from the air discharged from the first cyclone section (113). A space through which air can flow can be formed inside the cyclone body (220), and air discharged from the first cyclone section (113) can flow into the inside of the cyclone body (220).

[0142] The cyclone body (220) can be placed inside the case (211). Specifically, at least a portion of the cyclone body (220) can be placed inside the case (211), and air passing through the mesh filter (212) can be introduced into the inside of the cyclone body (220).

[0143] A plurality of cyclone bodies (220) may be provided. Each cyclone body (220) may be formed with an inlet forming an outer wall around the hollow portion. The outer walls around the hollow portion formed by the cyclone bodies (220) may correspond to the outer walls of each axial cyclone. Air discharged from the first cyclone section (113) may be introduced into the cyclone body (220) through the inlet. Air circulating along the inner surface of the cyclone body (220) may form a cyclone flow.

[0144] Dust, which is heavier than air, can rotate within a vortex with a larger rotation radius than air. Since the dust rotates inside the cyclone body (220), the maximum rotation radius of the dust can be defined by the cyclone body (220).

[0145] The lower part of the cyclone body (220) may have a slanted shape that becomes narrower as it goes down. The lower part of the cyclone body (220) has a shape that becomes narrower as it goes down to induce the falling of dust separated from the air and prevent the dust from being discharged along the air to the vortex finder (231).

[0146] The lower part of the cyclone body (220) may be supported by a plate member (240). The plate member (240) may be arranged to surround the outer circumference of each cyclone body (220). A plurality of through holes may be formed in the plate member (240) at positions facing the cyclone body (220), and the lower part of the cyclone body (220) may be inserted into each of the through holes. Since the lower part of the cyclone body (220) has an inclined shape that becomes narrower as it goes downward, the cyclone body (220) may be supported by the plate member (240) at a position where the outer circumference of the cyclone body (220) and the size of the through hole are the same.

[0147] A fixing groove (not shown) may be provided in the plate member (240). The fixing groove may be arranged along the outer circumference of the plate member (240), and the fixing groove may be coupled to a fixing protrusion (not shown) arranged on the inner circumference of the case (211) to set a coupling position and prevent arbitrary relative rotation. Since arbitrary relative rotation may occur between the dust separation unit (230) and the case (211), arbitrary relative rotation must be prevented for normal operation of the second cyclone unit (200).

[0148] The fixing protrusion of the case (211) is formed to be insertable into the fixing groove, and may be formed on either the plate member (240) or the case (211). The fixing groove of the plate member (240) is formed to receive the fixing protrusion of the case (211), and may be formed on the other of the plate member (240) or the case (211). In addition, the fixing groove of the plate member (240) and the fixing protrusion of the case (211) may be provided in multiple numbers.

[0149] An exhaust port may be formed at the bottom of the cyclone body (220). That is, dust separated from the air inside the cyclone body (220) may be discharged from the cyclone body (220) through the exhaust port. In addition, the bottom of the cyclone body (220) may be communicated with the internal space of the storage member (213). Therefore, dust rotating along the vortex inside the cyclone body (220) may fall and be stored in the storage member (213). The dust stored in the storage member (213) may be communicated with the external space when the exhaust cover (122) is opened.

[0150] The upper part of the cyclone body (220) may be formed to accommodate a vortex finder (231). The upper part of the cyclone body (220) may be formed to have a constant inner diameter. The upper and lower parts of the cyclone body (220) may be distinguished based on the position where the inner diameter narrows.

[0151] The outer surface of each cyclone body (220) is connected to be in contact with the surrounding cyclone bodies (220), so that a plurality of cyclone bodies (220) may form a single member. It is preferable that the cross-section of each cyclone body (220) has a circular shape as illustrated in the drawing. This is because when the cross-section of the cyclone body (220) is formed in a circular shape, even if the outer surfaces of adjacent cyclone bodies (220) are in close contact with each other, a flow path for air and dust can be formed between them. If a flow path for air and dust is formed between the cyclone bodies (220), there is an advantage in that a separate flow path structure does not need to be installed.

[0152] It is not excluded that the cross-section of each cyclone body (220) may be formed as a polygon. However, even if the cross-section of each cyclone body (220) is formed as a polygon, it is preferable that it be formed as a polygon in which a path for air and dust can be formed.

[0153] The dust separation unit (230) may be disposed above the cyclone body (220) to form a set of axial cyclones together with the cyclone body (220). The cyclone body (220) may form a part of the set, and the dust separation unit (230) may form the remaining part of the set. That is, a set of axial cyclones may be formed by a plurality of cyclone bodies (220) and one member.

[0154] The dust separation unit (230) may include a vortex finder (231), a band member (232), a frame member (233a, 233b, 233c), and a fixing member (not shown). Since the dust separation unit may be a single integral member, the vortex finder (231), the band member (232), the frame member (233a, 233b, 233c), and the fixing member (not shown) may represent each part of the dust separation unit (230).

[0155] The vortex finder (231) is configured to discharge air that has passed through the cyclone flow inside the cyclone body (220). A path through which air can flow may be formed inside the vortex finder (231). A plurality of vortex finders (231) may be provided, and at least a portion of each vortex finder (231) may be disposed inside each cyclone body (220). The outer surface of each vortex finder (231) may be spaced apart from the inner surface of each cyclone body (220). Each vortex finder (231) has an inlet that forms an outer wall around the hollow portion, and air that has passed through the cyclone body (220) may be discharged through the inlet of each vortex finder (231). Additionally, air introduced into the inlet of the vortex finder (231) can flow upward and be discharged through the outlet of the vortex finder (231).

[0156] The lower portion of the vortex finder (231) may have a higher height than the band member (232). However, the upper portion of the vortex finder (231) may have the same height as the band member (232). In the drawing, it can be seen that the lower portion of the vortex finder (231) protrudes below the dust separation unit (230), but the upper portion does not.

[0157] It is preferable that the cross-section of each vortex finder (231) has a circular ring shape. It is not excluded that the cross-section of each vortex finder (231) is formed into a polygon. However, even if the cross-section of each vortex finder (231) is formed into a polygon, it is preferable that it be formed into a polygon in which air and dust passages can be formed.

[0158] The band member (232) may be formed to surround the outer surface of the vortex finder (231). At this time, the band member (232) may be named by another name as needed. For example, names such as a ring portion, a ring portion, a border portion, a perimeter portion, a circle portion, a support portion, a connection portion, an outer portion, a cyclone boundary portion, an outer wall portion, etc. may be considered, and other names are also possible. The band member (232) may be mounted on the case (211) and may have a shape corresponding to the upper portion of the case (211). The upper portion of the case (211) may be formed in a circular shape, and the band member (232) may also be formed in a circular shape that surrounds the vortex finder (231). However, this does not exclude the possibility that the upper portion of the case (211) and the band member (232) are formed in a polygonal shape.

[0159] The band member (232) can form a guide path that guides air discharged from the first cyclone unit (113) to the inside of the cyclone body (220). Here, the guide path can mean a space between the band member (232) and the inlet. That is, air discharged from the first cyclone unit (113) and passing through the mesh filter (212) can pass through the guide path and be introduced into the inside of the cyclone body (220) through the inlet.

[0160] The cross-sectional area of ​​the guide passage may increase from the center of the band member (232) toward the outer edge of the band member (232). In other words, the cross-sectional area of ​​the guide passage may increase from a cyclone body (220) disposed at the center among a plurality of cyclone bodies (220) toward a cyclone body (220) disposed at the outermost edge.

[0161] The gap between the band member (232) and each inlet may increase from the center of the band member (232) toward the outer edge of the band member (232). In other words, the gap between the band member (232) and each inlet may increase from the cyclone body (220) disposed at the center among the plurality of cyclone bodies (220) toward the cyclone body (220) disposed at the outermost edge. Here, the gap may mean the axial gap of the cyclone body (220). Alternatively, the gap may mean the axial gap of the vortex finder (231). Alternatively, the gap may mean the gap in the coupling direction of the cyclone body (220) and the vortex finder (231).

[0162] The band member (232) may be formed to slope upward from the inner side toward the outer side. That is, as the distance between the inlet of the band member (232) and the cyclone body (220) increases from the center of the band member (232) toward the outer side of the band member (232), a relatively large amount of air can be introduced into the guide passage. Due to this structure, the air discharged from the first cyclone section (113) can be smoothly transferred to the cyclone body (220) located at the center among the plurality of cyclone bodies (220).

[0163] In addition, as the band member (232) is formed to be inclined upward, the axial length of each vortex finder (231) may gradually become longer as it is arranged from the center of the band member (232) toward the periphery of the band member (232). In other words, the axial length of each vortex finder (231) may gradually become longer as it is arranged farther away from a fixing member to be described later. At this time, the heights of the plurality of cyclone bodies (220) may be the same. Due to this structure, an additional downward air flow is generated along the inclined band member (232), and thus the flow rate of air introduced into the guide passage may increase compared to when the shape of the band member (232) is flat.

[0164] Meanwhile, a set of axial cyclones of a vacuum cleaner according to the present invention can be formed by the flow of air passing through the cyclone body (220) and the vortex finder (231). At this time, as described above, the overall length of the axial cyclone becomes shorter as it moves from the outer edge of the band member (232) to the center of the band member (232), so that the weight of the second cyclone unit (200) can be reduced.

[0165] However, if the overall length of the axial cyclone becomes shorter, the flow efficiency may decrease. At this time, if the cross-sectional area of ​​the guide passage becomes narrower from the outer edge of the band member (232) toward the center of the band member (232), a relatively large amount of air can be delivered to the cyclone body (220) located at the center. Therefore, the present invention has the effect of increasing the overall efficiency of the axial cyclone by smoothly forming a cyclone flow to the cyclone body (220) located at the center.

[0166] The position fixing step (not shown) of the dust separation unit (230) can be fitted into the step (not shown) of the case (211) to set the engagement position and prevent arbitrary relative rotation. Since arbitrary relative rotation may occur between the dust separation unit (230) and the case (211), arbitrary relative rotation must be prevented for normal operation of the second cyclone unit (200).

[0167] A fixing member for fixing the plate member (240) to the band member (232) may be provided on the band member (232). The fixing member may be arranged on the lower surface of the band member (232). The fixing member may extend downward from the center of the lower surface of the band member (232).

[0168] The fixed member can be fitted into the fixed space. The fixed space can be formed by cyclone bodies (220) located at the center among a plurality of cyclone bodies (220). That is, the outer peripheral surfaces of the cyclone bodies (220) located at the center among the plurality of cyclone bodies (220) are connected to be in contact with the surrounding cyclone bodies (220), so that the fixed space is surrounded by the outer peripheral surfaces of the cyclone bodies (220) located at the center.

[0169] The fixed space can be formed to correspond to the fixed member. With the fixed member fitted into the fixed space, a plurality of cyclone bodies (220) can be arranged radially with the fixed member as the center. At this time, the axial length of each vortex finder (231) can gradually increase as it is arranged farther away from the fixed member. The fixed member fitted into the fixed space is fitted into a position fixing protrusion formed on the upper surface of the plate member (240) to set the coupling position, and arbitrary relative rotation between the dust separation unit (230) and the cyclone body (220) can be prevented.

[0170] The frame members (233a, 233b, 233c) can be formed to surround the band member (232) to form a frame of the dust separation unit (230). The frame members (233a, 233b, 233c) can surround the band member (232) at the outer edge of the band member (232). Meanwhile, the frame members (233a, 233b, 233c) can form a fixed step together with the band member (232). That is, since a part of the side surface of the band member (232) and the lower surface of the frame members (233a, 233b, 233c) form the fixed step, the case (211) can be fitted into the fixed step.

[0171] The frame members (233a, 233b, 233c) may include a first frame member (233a), a second frame member (233b), and a third frame member (233c). The first frame member (233a), the second frame member (233b), and the third frame member (233c) may be formed in a stepped manner.

[0172] The first frame member (233a) may be placed at the top of the second cyclone section (200) and may be in contact with the fastening member (320) of the filter section (300) to be described later. The first frame member (233a) may have a smaller diameter than the second frame member (233b) and the third frame member (233c).

[0173] The second frame member (233b) may be positioned between the first frame member (233a) and the third frame member (233c). The second frame member (233b) may have a diameter that is larger than that of the first frame member (233a) and smaller than that of the third frame member (233c).

[0174] The third border member (233c) may be positioned at the bottom and may be combined with the mesh filter (212). The third border member (233c) may have a larger diameter than the first border member (233a) and the second border member (233b).

[0175] A protruding member (not shown) is formed on the upper surface where the outlet of the vortex finder (231) is arranged to guide the air discharged through the outlet in a certain direction. At this time, the upper portion of the protruding member may have the same height as the frame member (233a, 233b, 233c), and the lower portion of the protruding member may have the same height as the band member (232). Since the protruding member has the same height as the frame member (233a, 233b, 233c) and the band member (232), the possibility of interference with other components and the possibility of damage can be reduced.

[0176] The vortex finder (231) and the band member (232) are connected to each other, and the band member (232) is connected to the frame members (233a, 233b, 233c), so that the dust separation unit (230) can be formed as a single integrated member.

[0177] The guide vane is configured to guide air discharged from the first cyclone section (113) toward the inside of the cyclone body (220). The guide vane can form a flow path through which air introduced through the inlet can flow toward the inside of the cyclone body (220). Therefore, air flowing along the flow path formed by the guide vane can form a swirling flow between the vortex finder (231) and the cyclone body (220).

[0178] At least a portion of the guide vane may be positioned between the cyclone body (220) and the vortex finder (231) and connected to each cyclone body (220) and each vortex finder (231). One end of the guide vane may be connected to the outer surface of the vortex finder (231) along a spiral direction, and the other end of the guide vane may be connected to the inner surface of the cyclone body (220) along a spiral direction.

[0179] Each cyclone body (220) and each vortex finder (231) may be provided with a plurality of guide vanes, and the guide vanes may extend in a spiral direction to generate a swirling flow. As the guide vanes extend in a spiral direction, air and dust introduced into the inlet of the cyclone body (220) may form a swirling flow.

[0180] Below, the flow of air flowing through the path of the vacuum cleaner according to an embodiment of the present invention is described.

[0181] First, when the suction motor (114) is operated, external air can be drawn into the dust bin (120) through the suction part (112).

[0182] Air separated from dust by the first cyclone section (113) inside the dust bin (120) can pass through the mesh filter (212) formed in the case (211) and flow into the passage between the cyclone body (220) and the case (211). At this time, the passage between the cyclone body (220) and the case (211) can be formed between the outer surface of the cyclone body (220) and the inner surface of the case (211).

[0183] Air that has passed through the mesh filter (212) can pass through the passage between the cyclone body (220) and the case (211) and then flow into the inside of the cyclone body (220) through the inlet of the cyclone body (220).

[0184] The air drawn into the inside of the cyclone body (220) can flow upwards and pass through the vortex finder (231) after forming a swirling flow and falling. The air that has passed through the vortex finder (231) can flow toward the suction motor (114) after the dust has been filtered out by the pre-filter (310) and can be discharged to the outside through the HEPA filter and the air exhaust port.

[0185] FIG. 4 is a drawing for explaining the detailed configuration of the second cyclone unit and the filter unit of the cleaner according to an embodiment of the present invention, FIG. 5 is a drawing for explaining in detail the first area shown in FIG. 4, FIG. 6 is a drawing for explaining a state in which the second cyclone unit and the filter unit are removed from the cleaner according to an embodiment of the present invention, and FIG. 7 is a drawing for explaining in detail the second area shown in FIG. 6.

[0186] Hereinafter, the features of a vacuum cleaner according to an embodiment of the present invention will be described with reference to FIGS. 4 to 7.

[0187] The second cyclone unit (200) of the cleaner (100) according to an embodiment of the present invention can be detachably coupled to the main body (110) while being coupled with the filter unit (300). The second cyclone unit (200) can be detachably coupled to the main body (110) together with the filter unit (300).

[0188] The second cyclone unit (200) can be separated while rotating in the circumferential direction of the main body (110) with the main body (110) as the center. The second cyclone unit (200) can be separated while rotating in the circumferential direction of the main body housing (111) with the main body housing (111) as the center.

[0189] The second cyclone section (200) can be separated from the main body (110) while rotating around the central axis (a1) of the dust bin, the axis (a2) of the cyclone flow, the rotational axis (a3) ​​of the suction motor, or the central axis (a4) of the case.

[0190] The filter unit (300) can be detachably connected to the second cyclone unit (200).

[0191] The filter unit (300) can be separated while rotating in the circumferential direction of the second cyclone unit (200) with the second cyclone unit (200) as the center. The filter unit (300) can be separated while rotating in the circumferential direction of the second frame member (233b) with the second frame member (233b) as the center.

[0192] The filter unit (300) can be separated from the second cyclone unit (200) while rotating around the central axis (a1) of the dust bin, the axis (a2) of the cyclone flow, the rotational axis (a3) ​​of the suction motor, or the central axis (a4) of the case.

[0193] The rotation direction for separating the second cyclone unit (200) from the main body (110) and the rotation direction for separating the filter unit (300) from the second cyclone unit (200) may be opposite to each other. Through this, when the second cyclone unit (200) is separated from the main body (110), the filter unit (300) is prevented from being separated from the second cyclone unit (200), so that the second filter unit (300) can be separated together with the second cyclone unit (200).

[0194] The second cyclone section (200) may include a first coupling protrusion (234) formed to protrude outward. Specifically, the first coupling protrusion (234) may be formed to protrude outward from the second frame member (233b).

[0195] The second cyclone unit (200) may include a fixing unit (235). The fixing unit (235) may be formed lower than the first coupling protrusion (234). When the first coupling protrusion (234) is fitted into the first coupling groove (118) to be described later, the fixing unit (235) may be in close contact with the first guide groove (119) to be described later, thereby fixing the second cyclone unit (200) to the main body (110).

[0196] The second cyclone section (200) may include an inclined section (236). The inclined section (236) may connect the first coupling protrusion (234) and the fixed section (235). Since the fixed section (235) is formed lower than the first coupling protrusion (234), the inclined section (236) may be formed to be inclined downward from the first coupling protrusion (234) toward the fixed section (235). Through this, when the first coupling protrusion (234) moves along the first guide groove (119) and is then fitted into the first coupling groove (118), the step between the first guide groove (119) and the first coupling groove (118) may be inclined along the inclined section (236). Therefore, the inclined section (236) may play a role in stably fitting the first coupling protrusion (234) into the first coupling groove (118).

[0197] The main body (110) may include a first coupling groove (118) that is coupled with the first coupling protrusion (234) when the second cyclone section (200) rotates relative to the main body (110). Specifically, the first coupling groove (118) may be formed by being recessed inward in the main body housing (111).

[0198] The first coupling groove (118) can be formed to correspond to the first coupling protrusion (234). The first coupling protrusion (234) can be fitted into the first coupling groove (118).

[0199] The main body (110) may include a first guide groove (119) that guides the rotation of the second cyclone part (200) so that the first coupling protrusion (234) and the first coupling groove (118) are coupled. The first guide groove (119) may be formed to extend in the circumferential direction of the main body housing (111). The first guide groove (119) may be formed to extend in the circumferential direction of the main body housing (111).

[0200] The first guide groove (119) may be formed in connection with the first coupling groove (118). At this time, the first coupling groove (118) may be formed deeper than the guide groove (119).

[0201] The filter unit (300) may include a second coupling protrusion (321) formed to protrude outward. Specifically, the second coupling protrusion (321) may be formed to protrude outward from the fastening member (320).

[0202] The second cyclone section (200) may include a second coupling groove (237) that is coupled with the second coupling protrusion (321) when the filter section (300) rotates relative to the second cyclone section (200). Specifically, the second coupling groove (237) may be formed by being recessed inward in the second guide groove (238) described later.

[0203] The second cyclone unit (200) may include a second guide groove (238) that guides the rotation of the filter unit (300) so that the second coupling protrusion (321) is coupled to the second coupling groove (237). The second guide groove (238) may be formed by being recessed inward from the first frame member (233a). The second guide groove (238) may be formed by extending in the circumferential direction of the first frame member (233a).

[0204] The second guide groove (238) may be formed in connection with the second joining groove (237). At this time, the second joining groove (237) may be formed deeper than the second guide groove (238).

[0205] The first sealer (239) may be placed in the second cyclone section (200). The first sealer (239) may be placed between the second frame member (233b) and the third frame member (233c). The first sealer (239) may be placed along the circumferential direction of the third frame member (233c). The first sealer (239) may seal the space between the second cyclone section (200) and the main body (110) when the second cyclone section (200) is coupled to the main body (110).

[0206] The filter unit (300) may include a pre-filter (310), a fastening member (320), a second coupling protrusion (321), a connecting member (330), and a second sealer (340).

[0207] The pre-filter (310) can filter the air that has passed through the vortex finder (231) before it is sucked into the suction motor (114). The pre-filter (310) can be accommodated in a filter receiving portion (111a) formed inside the main body housing (111).

[0208] The fastening member (320) can be fitted to the first frame member (233a). The fastening member (320) can be fitted to the first frame member (233a) while rotating around the axis (a2) of the cyclone flow.

[0209] A second coupling protrusion (321) may be arranged on the fastening member (320). The inner circumference of the fastening member (320) may be formed to correspond to the outer circumference of the first frame member (233a).

[0210] A connecting member (330) can connect the pre-filter (310) and the fastening member (320). A plurality of connecting members (330) can be arranged along the circumferential direction of the fastening member (320).

[0211] The second sealer (340) may be placed in the filter unit (300). The second sealer (340) may be placed along the upper circumference of the pre-filter (310). The second sealer (340) may be placed along the circumferential direction of the pre-filter (310). The second sealer (340) may seal the space between the filter unit (300) and the main body (110) while the second cyclone unit (200) is coupled to the main body (110).

[0212] FIG. 8a is a drawing for explaining an appearance of a dust bin of a cleaner according to an embodiment of the present invention rotating with respect to a main body, FIG. 8b is a drawing for explaining an appearance of a dust bin of a cleaner according to an embodiment of the present invention being separated from a main body, FIG. 8c is a drawing for explaining an appearance of a second cyclone part of a cleaner according to an embodiment of the present invention being rotated with respect to a main body while being coupled with a filter part, FIG. 8d is a drawing for explaining an appearance of a second cyclone part of a cleaner according to an embodiment of the present invention being separated from a main body while being coupled with a filter part, FIG. 8e is a drawing for explaining an appearance of a filter part of a cleaner according to an embodiment of the present invention being rotated with respect to a second cyclone part, and FIG. 8f is a drawing for explaining an appearance of a filter part of a cleaner according to an embodiment of the present invention being separated from a second cyclone part.

[0213] Hereinafter, a specific separation process of a cleaner (100) according to an embodiment of the present invention will be described with reference to FIGS. 8a to 8f.

[0214] Referring to FIGS. 8A and 8B, the dust bin (120) can be separated from the main body (110). Specifically, the dust bin (120) can be separated from the main body (110) while rotating in the circumferential direction of the main body (110).

[0215] Referring to FIGS. 8C and 8D, the second cyclone unit (200) can be separated from the main body (110). Specifically, the second cyclone unit (200) can be separated from the main body (110) while rotating in the circumferential direction of the main body (110). At this time, the second cyclone unit (200) can be separated from the main body (110) while being coupled to the filter unit (300).

[0216] Referring to FIGS. 8E and 8F, the filter unit (300) can be separated from the second cyclone unit (200). Specifically, the filter unit (300) can be separated from the second cyclone unit (200) while rotating in the circumferential direction of the second cyclone unit (200). At this time, the direction in which the filter unit (300) is separated from the second cyclone unit (200) and the direction in which the second cyclone unit (200) is separated from the main body (110) may be opposite to each other.

[0217] Although the present invention has been described in detail through specific examples, this is for the purpose of specifically explaining the present invention, and the present invention is not limited thereto, and it is clear that the present invention can be modified or improved by a person having ordinary knowledge in the relevant field within the technical spirit of the present invention.

[0218] All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

Claims

1. Main body; A dustbin coupled to the above body; A suction unit that guides air into the interior of the dustbin; A first cyclone section that separates dust from air sucked through the above suction section; A second cyclone section that separates dust from the air discharged from the first cyclone section; and It includes a filter section that separates dust from the air discharged from the second cyclone section; A vacuum cleaner characterized in that the second cyclone section is detachably connected to the main body while being combined with the filter section.

2. In paragraph 1, A vacuum cleaner characterized in that the filter part is detachably connected to the second cyclone part.

3. In paragraph 2, A vacuum cleaner characterized in that the rotation direction for separating the second cyclone unit from the main body and the rotation direction for separating the filter unit from the second cyclone unit are opposite to each other.

4. In paragraph 2, The above second cyclone section, including a first coupling protrusion formed by protruding outward; The above body, A vacuum cleaner characterized in that it includes a first coupling groove that is coupled with the first coupling protrusion when the second cyclone part rotates relative to the main body.

5. In paragraph 4, The above body, A vacuum cleaner characterized by including a first guide groove that guides the rotation of the second cyclone part so that the first coupling protrusion is coupled to the first coupling groove.

6. In paragraph 5, A vacuum cleaner characterized in that the first coupling groove is formed deeper than the guide groove.

7. In paragraph 2, The above filter part, a second coupling protrusion formed by protruding outward; The above second cyclone section, A vacuum cleaner characterized in that it includes a second coupling groove that is coupled with the second coupling protrusion when the filter part rotates relative to the second cyclone part.

8. In paragraph 7, The above second cyclone section, A vacuum cleaner characterized by including a second guide groove that guides rotation of the filter part so that the second coupling protrusion is coupled to the second coupling groove.

9. In paragraph 8, A vacuum cleaner characterized in that the second coupling groove is formed deeper than the second cyclone section.

10. In paragraph 1, A cleaner characterized in that it further includes a first sealer arranged in the second cyclone section and sealing a space between the second cyclone section and the main body while the second cyclone section is coupled to the main body.

11. In paragraph 1, A vacuum cleaner characterized in that it further includes a second sealer arranged in the filter section and sealing a space between the filter section and the main body while the second cyclone section is coupled to the main body.

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