Dust collector

Abstract

The present invention relates to a vacuum cleaner, comprising: a main body; a dust collection box attached to the main body; a suction unit that guides air into the interior of the dust collection box; a first cyclone separator that separates dust from the air drawn in through the suction unit; a second cyclone separator that separates dust from the air discharged from the first cyclone separator; and a filter unit that separates dust from the air discharged from the second cyclone separator, wherein the second cyclone separator is detachably attached to the main body when attached to the filter unit.

Description

Technical Field

[0001] This invention relates to vacuum cleaners. Background Technology

[0002] In general, a vacuum cleaner, as a household appliance that uses electricity to suck up small pieces of trash or dust and fills the dust collection box in the product, is usually called a vacuum cleaner.

[0003] Vacuum cleaners can be divided into manual vacuum cleaners, which are moved directly by the user for cleaning, and automatic vacuum cleaners, which clean while moving on their own. Manual vacuum cleaners are further classified according to their shape, such as canister vacuum cleaners, upright vacuum cleaners, handheld vacuum cleaners, and stick vacuum cleaners.

[0004] In the past, canister vacuum cleaners were the most commonly used type of household vacuum cleaner. However, in recent years, there has been a growing trend of using handheld and stick vacuum cleaners, which improve ease of use by integrating the dustbin and the main body of the vacuum cleaner into one unit.

[0005] In canister vacuum cleaners, the main body and the suction port are connected by a rubber hose or tube. Depending on the situation, a brush head can be inserted into the suction port for use.

[0006] Handheld vacuum cleaners maximize portability; although lightweight, their short length limits the area that can be cleaned while seated. Therefore, they are best suited for cleaning specific areas such as desks, sofa surfaces, or car interiors.

[0007] Stick vacuum cleaners can be used standing up, allowing cleaning without bending over. This makes them advantageous for moving and cleaning wider areas. While handheld vacuum cleaners are used for cleaning narrow spaces, stick vacuum cleaners can clean much wider areas and reach high places that are inaccessible by hand. In recent years, stick vacuum cleaners have been offered in modular form, allowing users to proactively switch between different types of vacuum cleaners for various applications.

[0008] In this regard, a vacuum cleaner is disclosed in Korean Patent Publication No. 10-2018-0023273, which is existing literature.

[0009] In the aforementioned existing literature, a second cyclone separator is provided to separate dust from the air discharged from the first cyclone separator, and a pre-filter is provided to filter dust from the air discharged from the second cyclone separator. Furthermore, regarding the aforementioned second cyclone separator and the aforementioned pre-filter located inside the vacuum cleaner, dust accumulates on their surfaces when the suction motor is driven, therefore they need to be separated and cleaned separately.

[0010] At this point, according to the aforementioned existing literature, in order to separate the second cyclone separator, the user needs to separate the dust collection box and then separate the second cyclone separator; and in order to separate the pre-filter, the user needs to open the filter frame of the filter mechanism and then pull the pre-filter upwards.

[0011] Therefore, in order to clean the second cyclone separator and the pre-filter, the user needs to first separate the dust collection box and the filter frame, and then separate the second cyclone separator and the pre-filter separately, which is quite troublesome. Summary of the Invention

[0012] Technical issues

[0013] The present invention is proposed to solve the problems existing in conventional vacuum cleaners as described above. The problem to be solved by the present invention is to provide a vacuum cleaner in which the second cyclone separator can be integrally separated from the filter when the second cyclone separator is separated from the main body.

[0014] In addition, the present invention aims to provide a vacuum cleaner in which a filter section is detachably attached to a second cyclone separator section, so that after the second cyclone separator section is separated from the main body, the filter section can be separated from the second cyclone separator section as needed.

[0015] Furthermore, the problem to be solved by the present invention is to provide a vacuum cleaner in which the rotation direction when the second cyclone separator is separated from the main body is opposite to the rotation direction when the filter is separated from the second cyclone separator, so that the filter can be prevented from being separated from the second cyclone separator when the second cyclone separator is separated from the main body.

[0016] Methods for solving problems

[0017] To address the aforementioned issues, the vacuum cleaner of the present invention includes: a main body; a dust collection box attached to the main body; a suction unit that guides air into the interior of the dust collection box; a first cyclone separator that separates dust from the air drawn in through the suction unit; a second cyclone separator that separates dust from the air discharged from the first cyclone separator; and a filter unit that separates dust from the air discharged from the second cyclone separator, wherein the second cyclone separator is detachably attached to the main body while being attached to the filter unit.

[0018] The aforementioned filter section can be detachably combined with the aforementioned second cyclone separator section.

[0019] The rotation direction when the second cyclone separator is separated from the main body is opposite to the rotation direction when the filter is separated from the second cyclone separator.

[0020] The second cyclone separator includes a first connecting protrusion that protrudes outward, and the main body includes a first connecting groove that engages with the first connecting protrusion when the second cyclone separator rotates relative to the main body.

[0021] The aforementioned main body includes: a first guide groove, which guides the rotation of the aforementioned second cyclone separator so that the aforementioned first connecting protrusion engages with the aforementioned first connecting groove.

[0022] The first engagement groove is formed to be deeper than the guide groove.

[0023] The filter section includes a second connecting protrusion that protrudes outward, and the second cyclone separator includes a second connecting groove that engages with the second connecting protrusion when the filter section rotates relative to the second cyclone separator.

[0024] The second cyclone separator includes a second guide groove that guides the rotation of the filter section so that the second connecting protrusion engages with the second connecting groove.

[0025] The aforementioned second bonding groove is formed to be deeper than the second cyclone separation section.

[0026] The vacuum cleaner of the present invention further includes: a first sealing member disposed on the second cyclone separator, which provides an airtight seal between the second cyclone separator and the main body when the second cyclone separator is attached to the main body.

[0027] The vacuum cleaner of the present invention further includes: a second sealing member disposed on the filter section, which provides an airtight seal between the filter section and the main body when the second cyclone separator is attached to the main body.

[0028] Invention Effects

[0029] As described above, in the vacuum cleaner according to the present invention, the second cyclone separator can be integrally separated from the filter section when the second cyclone separator is separated from the main body.

[0030] Furthermore, in this invention, the filter section can be detachably attached to the second cyclone separator section, so that after the second cyclone separator section is separated from the main body, the filter section can be separated from the second cyclone separator section as needed.

[0031] Furthermore, in this invention, the rotation direction when separating the second cyclone separator from the main body is opposite to the rotation direction when separating the filter from the second cyclone separator, so that the filter can be prevented from separating from the second cyclone separator when separating the second cyclone separator from the main body. Attached Figure Description

[0032] Figure 1 This is a perspective view of a vacuum cleaner according to an embodiment of the present invention.

[0033] Figure 2 This is an exploded view of a vacuum cleaner according to an embodiment of the present invention.

[0034] Figure 3 This is a cross-sectional view of a vacuum cleaner according to an embodiment of the present invention.

[0035] Figure 4 This is a diagram illustrating the specific structure of the second cyclone separator and filter section of a vacuum cleaner according to an embodiment of the present invention.

[0036] Figure 5 It is used for detailed explanation Figure 4 The diagram shows region 1.

[0037] Figure 6 This diagram illustrates the state of removing the second cyclone separator and filter from a vacuum cleaner according to an embodiment of the present invention.

[0038] Figure 7 It is used for detailed explanation Figure 6 The diagram shows two regions.

[0039] Figure 8a This diagram illustrates the state in which the dust collection box of a vacuum cleaner, according to an embodiment of the present invention, rotates relative to the main body.

[0040] Figure 8b This is a diagram illustrating the state in which the dust collection box of a vacuum cleaner according to an embodiment of the present invention is separated from the main body.

[0041] Figure 8c This diagram illustrates the state in which the second cyclone separator of a vacuum cleaner, in conjunction with the filter section, rotates relative to the main body according to an embodiment of the present invention.

[0042] Figure 8d This diagram illustrates the state in which the second cyclone separator of a vacuum cleaner, in conjunction with the filter section, separates from the main body, according to an embodiment of the present invention.

[0043] Figure 8e This diagram illustrates the state in which the filter section of a vacuum cleaner, according to an embodiment of the present invention, rotates relative to the second cyclone separator.

[0044] Figure 8f This is a diagram illustrating the state in which the filter section of an embodiment of the present invention is separated from the second cyclone separator. Detailed Implementation

[0045] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0046] This invention can be modified in various ways and can have various embodiments. Therefore, specific embodiments are illustrated in the accompanying drawings and described in detail in the description. This should not be construed as limiting the invention to specific embodiments, but rather as including all modifications, equivalents, and substitutions that fall within the scope of the invention's concept and technology.

[0047] The terminology used in this application is for illustrative purposes only and is not intended to limit the scope of the invention. Unless otherwise specified herein, singular expressions include plural expressions.

[0048] Unless otherwise defined, all terms used herein, including technical or scientific terms, shall have the same meaning as understood by one of ordinary skill in the art in the general sense. Predefined terms used in the general sense shall be interpreted as having the same meaning as in related art texts, and shall not be interpreted as idealized or overly formal unless explicitly defined in this application.

[0049] Figure 1 This is a perspective view of a vacuum cleaner according to an embodiment of the present invention. Figure 2 This is an exploded view of a vacuum cleaner according to an embodiment of the present invention. Figure 3 This is a cross-sectional view of a vacuum cleaner according to an embodiment of the present invention.

[0050] First, refer to Figures 1 to 3 The structure of the vacuum cleaner 100 is described below.

[0051] Vacuum cleaner 100 may refer to a vacuum cleaner that is manually operated by a user. For example, vacuum cleaner 100 may refer to a handheld vacuum cleaner or a stick vacuum cleaner.

[0052] On the other hand, in one embodiment of the invention, the orientation of the vacuum cleaner 100 is defined with reference to the bottom surface (lower surface) of the battery casing 130 when it is placed on the ground.

[0053] At this time, "front" can refer to the direction in which the suction section 112 is arranged with reference to the suction motor 114, and "rear" can refer to the direction in which the air exhaust cover 115 is arranged with reference to the suction motor 114. Furthermore, based on the view of the filter section 300 from the suction motor 114, the direction on the right can be called the right side, and the direction on the left can be called the left side. Additionally, in one embodiment of the present invention, based on the bottom surface (lower surface) of the battery casing 130 placed on the ground, the upper and lower sides can be defined along a direction perpendicular to the ground.

[0054] 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 separator 113, a suction motor 114, an air exhaust cover 115, a handle 116, and an operating unit 117.

[0055] The main housing 111 can form the appearance of the vacuum cleaner 100. The main housing 111 provides space to house the suction motor 114 and the filter (not shown). The main housing 111 can be formed into a cylindrical shape.

[0056] The suction section 112 may protrude outward from the main body housing 111. As an example, the suction section 112 may be formed into a cylindrical shape with an internal opening. The suction section 112 may be coupled to the extension tube 150. The suction section 112 provides a flow path for the flow of air containing dust. The suction section 112 may be coupled to the main body 110 generally with its central portion located at the boundary between the dust collection box 120 and the main body housing 111.

[0057] On the other hand, in this embodiment, an imaginary line can be formed that penetrates the interior of the cylindrical suction section 112. In this case, the imaginary line can represent the axis in the length direction of the suction flow path.

[0058] The vacuum cleaner 100 of an embodiment of the present invention may include at least one cyclone separator that can separate dust by means of a cyclone flow. For example, the vacuum cleaner 100 may include a first cyclone separator 113 and a second cyclone separator 200.

[0059] The first cyclone separator 113 is designed to separate dust drawn into the interior of the main body 110 through the suction section 112, and utilizes the principle of a dust collector that employs centrifugal force. That is, the first cyclone separator 113 represents the space in which a cyclone flow is generated rotating along the inner circumferential surface of the dust collection box 120, and the first cyclone separator 113 can represent a portion of the space inside the dust collection box 120.

[0060] The first cyclone separator 113 can communicate with the suction section 112. The first cyclone separator 113 can separate the dust sucked into the interior through the suction section 112. The space inside the first cyclone separator 113 can communicate with the space inside the dust collection box 120.

[0061] The cyclone flow generated in the first cyclone separator 113 can be generated by the suction of the suction motor 114.

[0062] The cyclone flow generated in the first cyclone separation section 113 can be formed between the inner side of the dust collection box 120 and the outer side of the housing 211 (described later). That is, the cyclone flow can be formed inside the first cyclone separation section 113.

[0063] The space inside the first cyclone separator 113 can communicate with the intake section 112. Air and dust drawn in through the intake section 112 flow along the inner circumferential surface of the first cyclone separator 113, thereby generating a cyclone flow inside the first cyclone separator 113.

[0064] As an example, the cyclone flow generated in the first cyclone separator 113 can be formed to surround the inner periphery of the dust collection box 120 in a circular shape. The air drawn in through the suction section 112 flows in a circular shape along the inner peripheral surface of the dust collection box 120 with reference to the central axis a1 of the dust collection box 120, thereby generating a cyclone flow in the internal space of the first cyclone separator 113.

[0065] Specifically, when the axis a2 of the cyclone flow generated by the first cyclone separator 113 is arranged perpendicular to the lower side of the direction of gravity, the air drawn in through the suction section 112 can flow in a circular shape along the inner circumferential surface of the dust collection box 120 with reference to the central axis a1 of the dust collection box 120. Alternatively, when the axis a2 of the cyclone flow generated by the first cyclone separator 113 is arranged parallel to the ground, the air drawn in through the suction section 112 can flow in a circular shape along the inner circumferential surface of the dust collection box 120 with reference to the central axis a1 of the dust collection box 120.

[0066] As another example, the cyclone flow generated in the first cyclone separator 113 can be formed in a spiral shape along the inner periphery of the dust collection box 120. That is, the air drawn in through the suction section 112 flows in a spiral along the inner periphery of the dust collection box 120, thereby generating a cyclone flow in the internal space of the first cyclone separator 113.

[0067] Specifically, when the axis a2 of the cyclone flow generated by the first cyclone separation section 113 is arranged at an angle relative to the ground, the air drawn in through the suction section 112 can flow in a spiral shape along the inner periphery of the dust collection box 120.

[0068] The vacuum cleaner 100 of an embodiment of the present invention may include a second cyclone separator 200 that further separates dust from the air discharged from the first cyclone separator 113. That is, the second cyclone separator 200 filters out small dust particles that were not filtered by the first cyclone separator 113 and the filter module 210 in the air that has passed through the first cyclone separator 113 and the filter module 210.

[0069] At this time, the second cyclone separator 200 can be located inside the first cyclone separator 113 to minimize the size of the vacuum cleaner 100. The second cyclone separator 200 can be configured below the suction motor 114. Specifically, the second cyclone separator 200 can be configured inside the filter module 210. That is, the first cyclone separator 113 and the second cyclone separator 200 can be configured inside the dust collection box 120 through the filter module 210.

[0070] The second cyclone separator 200 may include a plurality of cyclone separator bodies 220 arranged in parallel. Therefore, the air discharged from the first cyclone separator 113 is diverted through the plurality of cyclone separator bodies 220 by the filter module 210. That is, the cyclone flow generated in the second cyclone separator 113 may be formed inside the cyclone separator body 220.

[0071] On the other hand, the second cyclone separator 200 may also include a single cyclone separator body 220, in which case the axis a2 of the cyclone flow generated by the second cyclone separator 200 may extend in the vertical direction.

[0072] Furthermore, the axis a2 of the cyclone flow generated in the first cyclone separation section 200 can also extend in the vertical direction. Therefore, the axis a2 of the cyclone flow generated in the first cyclone separation section 113 and the axis a2 of the cyclone flow generated in the second cyclone separation section 200 can be formed coaxially or parallel in the vertical direction.

[0073] A storage component 213 for storing dust separated from the second cyclone separator 200 may be disposed inside the dust collection box 120. The storage component 213 may be connected to the lower side of the housing 211 and may contact the upper surface of the discharge cover 122. In addition, the lower side of the storage component 213 may be open.

[0074] The storage component 213 can divide the space inside the dust collection box 120 into a first dust storage section for storing dust separated from the first cyclone separator 113 and a second dust storage section for storing dust separated from the second cyclone separator 200.

[0075] Therefore, the space between the storage component 213 and the dust collection box 120 can be defined as the first dust storage section, and the lower inner space of the storage component 213 can be defined as the second dust storage section.

[0076] The discharge cover 122 can open and close the first dust storage section and the second dust storage section simultaneously. That is, the first dust storage section and the second dust storage section can be exposed to the outside at the same time.

[0077] The suction motor 114 generates suction to draw in air. The suction motor 114 can be housed within the main body housing 111. The suction motor 114 generates suction by rotation. As an example, the suction motor 114 can be formed in a shape similar to a cylinder.

[0078] At this time, a cyclone flow can be generated by the suction of the intake motor 114.

[0079] Specifically, when the suction motor 114 is started, the air drawn in by the suction section 112 by the suction force of the suction motor 114 can generate a cyclone flow in the first cyclone separator 113 and / or the second cyclone separator 200.

[0080] On the other hand, in this embodiment, a hypothetical rotating shaft a3 of a suction motor that extends the rotating shaft of the suction motor 114 can be formed.

[0081] The suction motor 114 may be located inside the main housing 111. Furthermore, at least a portion of the suction motor 114 may be located above the second cyclone separator 200. Therefore, the suction motor 114 may be located above the dust collection box 120.

[0082] The suction motor 114 can be connected to the outlet of the second cyclone separator 200.

[0083] The shaft a2 of the cyclone flow in the first cyclone separator 113 can pass through the suction motor 114.

[0084] In an embodiment of the present invention, when the suction motor 114 is located above the second cyclone separator 200, the air discharged from the second cyclone separator 200 flows directly to the suction motor 114, thereby minimizing the flow path between the second cyclone separator 200 and the suction motor 114.

[0085] An air exhaust cover 115 may be disposed on one side of the main housing 111 in the axial direction. A filter for filtering air may be accommodated on the air exhaust cover 115. As an example, a high-efficiency particulate air (HEPA) filter may be accommodated on the air exhaust cover 115.

[0086] An air outlet may be formed in the air outlet cover 115 for discharging air drawn in by the suction of the suction motor 114.

[0087] A flow guide may be provided on the air exhaust cover 115. The flow guide directs the flow of air discharged through the air exhaust port.

[0088] The user can hold the handle 116. As an example, the handle 116 may be formed in a shape similar to a cylinder. Alternatively, the handle 116 may be formed in a curved cylindrical shape. The handle 116 may be configured to form a predetermined angle with the main body housing 111, the suction motor 114, or the first cyclone separator 113.

[0089] The handle 116 may include: a grip portion formed in a column shape for a user to grip; a first extension portion connected to one end of the grip portion in the longitudinal direction (axial direction) and extending toward the suction motor 114; and a second extension portion connected to the other end of the grip portion in the longitudinal direction (axial direction) and extending toward the dust collection box 120.

[0090] On the other hand, in this embodiment, an imaginary through-line of the grip portion can be formed that extends along the length direction of the grip portion (the axial direction of the column) and penetrates the grip portion.

[0091] As an example, the through line of the grip portion can be an imaginary line formed inside the cylindrical handle 116, and can be an imaginary line formed parallel to at least a portion of the outer surface (outer peripheral surface) of the grip portion.

[0092] The upper surface of the handle 116 can form part of the appearance of the upper surface of the vacuum cleaner 100. As a result, when the user holds the handle 116, it is possible to prevent some structures of the vacuum cleaner 100 from coming into contact with the user's arm.

[0093] The first extension may extend from the gripping portion toward the main housing 111 or the suction motor 114. At least a portion of the first extension may extend in a horizontal direction.

[0094] The second extension may extend from the gripping portion toward the dust collection box 120. At least a portion of the second extension may extend in a horizontal direction.

[0095] The operation unit 117 can be disposed on the main body housing 111. The operation unit 117 can be disposed on the outer side of the main body housing 111. The operation unit 117 can be composed of multiple buttons, and when the user presses a button, the corresponding command can be executed. The user can input start or stop commands for the vacuum cleaner 100 through the operation unit 117.

[0096] Vacuum cleaner 100 may include a dust collection box 120. The dust collection box 120 may communicate with the suction unit 112. A first cyclone separator 113 may be disposed inside the dust collection box 120. The dust collection box 120 may store dust separated from the first cyclone separator 113.

[0097] The dust collection box 120 may include a dust collection box body 121, a discharge cover 122, a dust collection box compression rod (not shown) and a compression component (not shown).

[0098] The dust collection box body 121 provides space for storing dust separated from the first cyclone separator 113. As an example, the dust collection box body 121 may be formed in a shape similar to a cylinder.

[0099] On the other hand, in this embodiment, an imaginary dust collection box central axis a1 can be formed that penetrates the interior (internal space) of the dust collection box body 121 and extends along the length direction of the dust collection box body 121 (representing the axial direction of the cylindrical dust collection box body 121).

[0100] A portion of the lower surface (bottom surface) of the dust collection box body 121 can be opened. Additionally, a lower surface extension (not shown) can be formed on the lower surface (bottom surface) of the dust collection box body 121. The lower surface extension can seal a portion of the lower surface of the dust collection box body 121.

[0101] The dust collection box 120 may include a discharge cover 122. The discharge cover 122 may be disposed on the lower surface of the dust collection box 120.

[0102] The discharge cover 122 can be configured to open and close one end of the dust collection box body 121 along its length. Specifically, the discharge cover 122 can selectively open and close the lower part of the dust collection box 120, which opens downwards.

[0103] The discharge cover 122 may include a cover body and a hinge portion. The cover body can seal a portion of the outer side of the dust collection box body 121. The cover body can rotate downwards with respect to the hinge portion. The hinge portion can be disposed adjacent to the battery housing 130. A torsion spring may be provided in the hinge portion. Therefore, when the discharge cover 122 is separated from the dust collection box body 121, the cover body is supported on the dust collection box body 121 by the elastic force of the torsion spring, and is in a state where it can rotate more than a predetermined angle about the hinge portion as an axis.

[0104] The discharge cover 122 can be engaged with the dust collection box 120 via a hook. Conversely, the discharge cover 122 can be detached from the dust collection box 120 via a connecting rod 122c. The connecting rod 122c can be disposed at the front of the dust collection box 120. Specifically, the connecting rod 122c can be disposed on the outer surface of the front side of the dust collection box 120. When an external force is applied, the connecting rod 122c can elastically deform the hook extending from the cover body to release the hook engagement between the cover body and the dust collection box body 121.

[0105] With the discharge cover 122 closed, the lower surface of the dust collection box 120 can be sealed by the discharge cover 122 and the lower surface extension.

[0106] The dust collection box 120 may include a dust collection box compression rod. The dust collection box compression rod may be disposed outside the dust collection box 120. The dust collection box compression rod is disposed outside the dust collection box 120 in a way that allows it to move vertically. The dust collection box compression rod may be connected to a compression member (not shown). When the dust collection box compression rod moves downward by an external force, the compression member (not shown) also moves downward. This provides convenience for the user. The compression member (not shown) and the dust collection box compression rod return to their original positions via a resilient member (not shown). Specifically, when the external force applied to the dust collection box compression rod is removed, the resilient member allows the dust collection box compression rod and the compression member (not shown) to move upward.

[0107] A compressor (not shown) can be disposed inside the dust collection box body 121. The compressor can move within the internal space of the dust collection box body 121. Specifically, the compressor can move up and down within the dust collection box body 121. This allows the compressor to compress the dust within the dust collection box body 121 downwards. Furthermore, when the discharge cover 122 separates from the dust collection box body 121, opening the lower part of the dust collection box 120, the compressor can move from the upper part of the dust collection box 120 downwards to remove residual dust and other foreign objects from within the dust collection box 120. This prevents residual dust from remaining in the dust collection box 120, thereby improving the suction power of the vacuum cleaner. Simultaneously, preventing residual dust from remaining in the dust collection box 120 also eliminates odors caused by residue.

[0108] The vacuum cleaner 100 may include a battery housing 130. A battery 140 may be housed within the battery housing 130. The battery housing 130 may be disposed on the underside of the handle 116. As an example, the battery housing 130 may be a hexahedral shape with an open underside. The upper surface of the battery housing 130 may be connected to the handle 116.

[0109] The battery housing 130 may include a downwardly opening receiving portion. The battery 140 can be installed or removed through the receiving portion of the battery housing 130.

[0110] The battery casing 130 may have exposed battery terminals.

[0111] When the battery terminals of the battery casing 130 are connected to an external charging terminal (not shown), power can be supplied to the battery 140 through the aforementioned battery terminals. The aforementioned battery terminals can be arranged spaced apart on the left and right sides of the bottom surface of the battery casing 130.

[0112] Vacuum cleaner 100 may include battery 140.

[0113] For example, the battery 140 can be detachably attached to the vacuum cleaner 100. The battery 140 can be detachably attached to the battery housing 130. As an example, the battery 140 can be inserted into the interior of the battery housing 130 from below. With such a structure, the portability of the vacuum cleaner 100 can be improved.

[0114] In contrast, the battery 140 can be integrally disposed inside the battery casing 130. In this case, the lower surface of the battery 140 is not exposed to the outside.

[0115] The battery 140 stores electrical energy and can power the various components of the suction motor 114, including the vacuum cleaner 100. The battery 140 can be disposed at the lower part of the handle 116. The battery 140 can also be disposed on the lower side of the dust collection box 120. That is, the suction motor 114 and the battery 140 can be arranged without overlapping in the front-to-back direction, and their heights can also be different. With the handle 116 as a reference, the heavier suction motor 114 is disposed on the upper side of the handle 116, and the lighter battery 140 is disposed on the lower side of the handle 116, thus the overall weight of the vacuum cleaner 100 can be evenly distributed. Therefore, when the user holds the handle 116 to clean, excessive strain on the user's wrists can be prevented.

[0116] According to the embodiment, when the battery 140 is attached to the battery casing 130, the lower surface of the battery 140 can be exposed to the outside. When the vacuum cleaner 100 is placed on the ground, the battery 140 can be placed on the ground, so the battery 140 can be directly separated from the battery casing 130. In addition, since the lower surface of the battery 140 is exposed to the outside and in direct contact with the outside air, the cooling performance of the battery 140 can be improved.

[0117] On the other hand, since the battery 140 is integrally fixed to the battery housing 130, the structure for assembling and disassembling the battery 140 and the battery housing 130 can be omitted, thus reducing the overall size of the vacuum cleaner 100 and achieving weight reduction.

[0118] Vacuum cleaner 100 may include an extension tube 150. The extension tube 150 may communicate with a cleaning module. The extension tube 150 may communicate with a main body 110. The extension tube 150 may communicate with the suction section 112 of the main body 110. The extension tube 150 may be formed in an elongated cylindrical shape.

[0119] The main body 110 can be connected to the extension tube 150. The main body 110 can be connected to the cleaning module via the extension tube 150. The main body 110 generates suction through the suction motor 114 and provides suction to the cleaning module through the extension tube 150. External dust can flow into the main body 110 through the cleaning module and the extension tube 150.

[0120] Vacuum cleaner 100 may include a cleaning module (not shown). The cleaning module may be in communication with an extension tube 150. Thus, outside air can flow into the body 110 of vacuum cleaner 100 through the cleaning module and the extension tube 150 by the suction generated in the body 110 of vacuum cleaner 100.

[0121] Vacuum cleaner 100 may include a cleaning component 160. The cleaning component 160 may be disposed in the filter housing 111a of the main body housing 111. The cleaning component 160 can sweep away accumulated dust from the surface of the pre-filter 310 while moving along the length of the pre-filter 310. The cleaning component 160 may be connected to a rod (not shown) slidably disposed outside the main body 110. Thus, the user can slide the rod (not shown) to sweep away dust accumulated on the surface of the pre-filter 310.

[0122] On the other hand, the vacuum cleaner in an embodiment of the present invention may include a second cyclone separator 200.

[0123] At least a portion of the second cyclone separator 200 may be disposed inside the first cyclone separator 113, and may separate dust from the air discharged from the first cyclone separator 113. When dust is separated from the air by the first cyclone separator 113, the air discharged from the first cyclone separator 113 may flow into the second cyclone separator 200 along the flow path.

[0124] The second cyclone separator 200 is composed of an assembly of axial-flow cyclone separators configured to separate dust from air flowing in axially. The assembly of axial-flow cyclone separators may include a cyclone separator body 220 and a dust separation unit 230.

[0125] The second cyclone separator 200 may include a filter module 210, a cyclone separator body 220, a dust separation unit 230, and guide vanes (not shown).

[0126] The filter module 210 can filter the air discharged from the first cyclone separator 113. The filter module 210 can guide the air with dust separated by the first cyclone separator 113 to the second cyclone separator 200.

[0127] The filter module 210 may include a housing 211 and a mesh filter 212.

[0128] The housing 211 can be disposed inside the dust collection box 120. The housing 211 can be disposed inside the first cyclone separator 113. A space can be formed inside the housing 211. A second cyclone separator 200 can be disposed inside the housing 211.

[0129] The shell 211 is not limited, but it can be formed into a cylindrical shape.

[0130] The central axis a4 of the housing 211 can extend in the vertical direction. The central axis a4 of the housing 211 can extend along the length direction of the housing 211.

[0131] As one example, the central axis a4 of the housing 211 may be formed coaxially with the axis a2 of the cyclone flow generated in the first cyclone separator 113. As another example, the central axis a4 of the housing 211 may be formed parallel to the axis a2 of the cyclone flow generated in the first cyclone separator 113. As yet another example, the central axis a4 of the housing 211 may be formed coaxially with the rotation axis a3 of the suction motor 114.

[0132] The mesh filter 212 can guide air into the interior of the housing 211.

[0133] The mesh filter 212 may be configured in the housing 211. The mesh filter 212 may refer to a part of the housing 211. For example, the housing 211 may refer to a pair of components respectively connected to the upper and lower side frames of the mesh filter 212.

[0134] The mesh filter 212 may have multiple holes with a specified diameter. Therefore, large foreign objects contained in the air discharged from the first cyclone separator 113 can be filtered by the mesh filter 212.

[0135] Air that has passed through the mesh filter 212 can flow into the second cyclone separator 200 disposed inside the housing 211.

[0136] At this time, the outer side and / or exterior of the housing 211 can refer to the direction relative to the first cyclone separation section 113 with the housing 211 as a reference, and the inner side and / or interior of the housing 211 can refer to the direction relative to the second cyclone separation section 200 with the housing 211 as a reference.

[0137] The cyclone separator body 220 is designed to separate dust from the air discharged from the first cyclone separation section 113, and utilizes the principle of a dust collector that employs centrifugal force. An airflow space can be formed inside the cyclone separator body 220, allowing the air discharged from the first cyclone separation section 113 to flow into the inside of the cyclone separator body 220.

[0138] The cyclone separator body 220 can be disposed inside the housing 211. Specifically, at least a portion of the cyclone separator body 220 can be disposed inside the housing 211, and air passing through the mesh filter 212 can flow into the inside of the cyclone separator body 220.

[0139] Multiple cyclone separator bodies 220 can be formed. Each cyclone separator body 220 may have an inlet forming an outer wall around the periphery of its hollow portion. The outer wall around the periphery of the hollow portion formed by the cyclone separator body 220 can correspond to the outer wall of each axial-flow cyclone separator. Air discharged from the first cyclone separation section 113 can flow into the inner side of the cyclone separator body 220 through the inlet. The air flowing along the inner circumferential surface of the cyclone separator body 220 can form a cyclone flow.

[0140] Dust particles heavier than air can trace a larger radius of rotation within the cyclone and rotate. The dust rotates inside the cyclone separator body 220, so the maximum radius of rotation of the dust particles can be defined by the cyclone separator body 220.

[0141] The lower part of the cyclone separator body 220 may have an inclined shape that gradually narrows as it approaches the bottom. The reason why the lower part of the cyclone separator body 220 has a shape that gradually narrows as it approaches the bottom is to guide the dust separated from the air to fall and to prevent the dust from being discharged along the air into the vortex overflow pipe 231.

[0142] The lower part of the cyclone separator body 220 can be supported by a plate member 240. The plate member 240 can be configured to surround the outer peripheral surface of each cyclone separator body 220. The plate member 240 can have a plurality of through holes formed at positions opposite to the cyclone separator body 220, into which the lower part of the cyclone separator body 220 can be inserted. The lower part of the cyclone separator body 220 has an inclined shape that gradually narrows towards the bottom, so that the cyclone separator body 220 can be supported by the plate member 240 at positions where the outer peripheral surface of the cyclone separator body 220 and the through holes are of the same size.

[0143] A fixing groove (not shown) may be provided on the plate component 240. This fixing groove may be arranged along the outer peripheral surface of the plate component 240, and engages with a fixing protrusion (not shown) disposed on the inner peripheral surface of the housing 211 to set the engagement position and prevent arbitrary relative rotation. Arbitrary relative rotation can occur between the dust separation unit 230 and the housing 211; therefore, for the normal operation of the second cyclone separator 200, it is necessary to prevent arbitrary relative rotation.

[0144] The fixing protrusion of the housing 211 can be inserted into the aforementioned fixing groove, and can be formed in either the plate member 240 or the housing 211. The fixing groove of the plate member 240 can accommodate the fixing protrusion of the housing 211, and can be formed in the other of the plate member 240 and the housing 211. In addition, multiple fixing grooves of the plate member 240 and fixing protrusions of the housing 211 can be formed.

[0145] A discharge port may be formed at the lower part of the cyclone separator body 220. That is, dust separated from the air inside the cyclone separator body 220 can be discharged from the cyclone separator body 220 through the discharge port. In addition, the lower part of the cyclone separator body 220 can communicate with the internal space of the storage component 213. Therefore, dust rotating along the cyclone inside the cyclone separator body 220 falls and is stored in the storage component 213. When the discharge cover 122 is opened, the dust stored in the storage component 213 can communicate with the external space.

[0146] The upper part of the cyclone separator body 220 may be configured to accommodate the vortex overflow pipe 231. The upper part of the cyclone separator body 220 may be configured to have a constant inner diameter. The upper and lower parts of the cyclone separator body 220 can be distinguished based on the position where the inner diameter narrows.

[0147] Each cyclone separator body 220 has its outer peripheral surface in contact with the surrounding cyclone separator bodies 220, thus allowing multiple cyclone separator bodies 220 to form a single component. As shown in the figure, the cross-section of each cyclone separator body 220 is preferably circular. This is because when the cross-section of the cyclone separator body 220 is circular, even if the outer peripheral surfaces of adjacent cyclone separator bodies 220 are in close contact with each other, a flow path for air and dust can be formed between them. When an air and dust flow path is formed between the cyclone separator bodies 220, it has the advantage of not requiring a separate flow path structure.

[0148] This does not preclude the possibility that the cross-section of each cyclone separator body 220 is formed as a polygon. However, even if the cross-section of each cyclone separator body 220 is formed as a polygon, it is preferable to form a polygon that can create flow paths for air and dust.

[0149] The dust separation unit 230 can be configured on the cyclone separator body 220 to form an axial flow cyclone separator assembly together with the cyclone separator body 220. The cyclone separator body 220 can form any part of the assembly, and the dust separation unit 230 can form the remaining part of the assembly. That is, an axial flow cyclone separator assembly can be formed by multiple cyclone separator bodies 220 and one component.

[0150] The dust separation unit 230 may include a vortex overflow pipe 231, a strip component 232, frame components 233a, 233b, 233c, and a fixing component (not shown). The dust separation unit may be a single integrated component; therefore, the vortex overflow pipe 231, the strip component 232, the frame components 233a, 233b, 233c, and the fixing component (not shown) may represent various parts of the dust separation unit 230.

[0151] The vortex overflow pipe 231 is a structure that discharges air that has passed through the cyclone flow inside the cyclone separator body 220. An airflow path can be formed inside the vortex overflow pipe 231. Multiple vortex overflow pipes 231 can be formed, and at least a portion of each vortex overflow pipe 231 can be disposed inside each cyclone separator body 220. The outer peripheral surface of each vortex overflow pipe 231 can be spaced apart from the inner peripheral surface of each cyclone separator body 220. Each vortex overflow pipe 231 has an inlet forming an outer wall of the periphery of the hollow portion, and air passing through the cyclone separator body 220 can be discharged to the inlet of each vortex overflow pipe 231. Furthermore, the air flowing into the inlet of the vortex overflow pipe 231 flows upward and is discharged to the outlet of the vortex overflow pipe 231.

[0152] The lower part of the vortex overflow pipe 231 may have a higher height than the strip member 232. However, the upper part of the vortex overflow pipe 231 may have the same height as the strip member 232. As shown in the attached figures, the lower end of the vortex overflow pipe 231 protrudes downwards from the dust separation unit 230, but the upper end does not.

[0153] The cross-section of each vortex overflow pipe 231 is preferably annular. It is not excluded that the cross-section of each vortex overflow pipe 231 is polygonal. However, even if the cross-section of each vortex overflow pipe 231 is polygonal, it is preferred to be polygonal in shape that can form a flow path for air and dust.

[0154] The strip-shaped component 232 can be formed to surround the outer peripheral surface of the vortex overflow pipe 231. In this case, the strip-shaped component 232 can be named differently as needed. For example, names such as ring, circle, border, periphery, circle portion, support, connecting part, outer contour, cyclone separator boundary, outer wall, etc., can be considered, or other names are also possible. The strip-shaped component 232 can be mounted on the housing 211 and can have a shape corresponding to the upper part of the housing 211. The upper part of the housing 211 can be formed as a circle, and the strip-shaped component 232 can also be formed as a circle surrounding the vortex overflow pipe 231. However, it is not excluded that the upper part of the housing 211 and the strip-shaped component 232 can be formed as polygons.

[0155] The strip-shaped component 232 can form a guide flow path that directs the air discharged from the first cyclone separator 113 to the inside of the cyclone separator body 220. Here, the guide flow path can refer to the space between the strip-shaped component 232 and the inlet. That is, the air discharged from the first cyclone separator 113 and passing through the mesh filter 212 flows into the inside of the cyclone separator body 220 through the guide flow path and the inlet.

[0156] The cross-sectional area of ​​the guide flow path gradually widens as it moves from the center of the strip member 232 toward the outer contour of the strip member 232. In other words, the cross-sectional area of ​​the guide flow path gradually widens as it moves from the cyclone separator body 220 located at the center of the plurality of cyclone separator bodies 220 toward the cyclone separator body 220 located at the outermost contour.

[0157] The spacing between the strip member 232 and each inlet can gradually increase from the center of the strip member 232 towards its outer contour. In other words, the spacing between the strip member 232 and each inlet can gradually increase from the cyclone separator body 220 disposed at the center of the plurality of cyclone separator bodies 220 towards the cyclone separator body 220 disposed at the outermost contour. Here, the aforementioned spacing may refer to the axial spacing of the cyclone separator bodies 220. Alternatively, the aforementioned spacing may refer to the axial spacing of the vortex overflow pipe 231. Alternatively, the aforementioned spacing may refer to the spacing in the joint direction of the cyclone separator bodies 220 and the vortex overflow pipe 231.

[0158] The strip-shaped member 232 is formed by gradually sloping upwards from the inside towards the outer contour. That is, as the center of the strip-shaped member 232 approaches the outer contour of the strip-shaped member 232, the gap between the strip-shaped member 232 and the inlet of the cyclone separator body 220 widens, thus allowing a relatively large flow of air to enter the guide flow path. With this structure, the air discharged from the first cyclone separator section 113 can be smoothly conveyed to the central cyclone separator body 220 among the multiple cyclone separator bodies 220.

[0159] Furthermore, as the strip-shaped member 232 is formed at an upward inclination, the axial length of each vortex overflow pipe 231 can gradually increase as it is positioned closer to the outer contour of the strip-shaped member 232 from its center. In other words, the axial length of each vortex overflow pipe 231 gradually increases as it moves away from the fixed member described later. At this time, the heights of the multiple cyclone separator bodies 220 can be the same. With such a structure, an airflow flowing downward along the inclined strip-shaped member 232 is further generated, thus increasing the flow rate of air flowing into the guide path compared to when the strip-shaped member 232 is flat.

[0160] On the other hand, the axial cyclone separators of the vacuum cleaner of the present invention can be assembled by the airflow passing through the cyclone separator body 220 and the vortex overflow pipe 231. At this time, as described above, the overall length of the axial cyclone separator can gradually shorten from the outer contour of the strip member 232 towards the center of the strip member 232, thus achieving a lightweight second cyclone separator section 200.

[0161] However, when the overall length of the axial cyclone separator becomes shorter, the flow efficiency can decrease. In this case, as the cross-sectional area of ​​the guide flow path gradually narrows from the outer contour of the strip member 232 towards its center, a relatively large volume of air is conveyed to the cyclone separator body 220 located at the center. Therefore, the present invention smoothly forms the cyclone flow to the cyclone separator body 220 located at the center, thereby improving the overall efficiency of the axial cyclone separator.

[0162] The positioning step (not shown) of the dust separation unit 230 engages with the step (not shown) of the housing 211 to set the engagement position and prevent arbitrary relative rotation. Arbitrary relative rotation can occur between the dust separation unit 230 and the housing 211, therefore, in order for the second cyclone separation section 200 to operate normally, it is necessary to prevent arbitrary relative rotation.

[0163] The strip member 232 may be provided with a fixing member for fixing the plate member 240 to the strip member 232. The fixing member may be disposed on the bottom surface of the strip member 232. The fixing member may extend downward from the center of the bottom surface of the strip member 232.

[0164] The fixing component can be embedded into the fixing space. The fixing space can be formed by the central cyclone separator body 220 among a plurality of cyclone separator bodies 220. That is, the outer peripheral surface of the central cyclone separator body 220 among the plurality of cyclone separator bodies 220 is connected in contact with the surrounding cyclone separator bodies 220, so the fixing space is surrounded by the outer peripheral surface of the central cyclone separator body 220.

[0165] Fixed spaces and fixed components are formed accordingly. With the fixed components embedded in the fixed spaces, multiple cyclone separator bodies 220 are arranged radially around the fixed components. At this time, the axial length of each vortex overflow pipe 231 gradually increases as it moves away from the fixed components. The fixed components embedded in the fixed spaces engage with fixed protrusions formed on the upper surface of the plate component 240 to set the engagement position and prevent arbitrary relative rotation between the dust separation unit 230 and the cyclone separator body 220.

[0166] The frame members 233a, 233b, and 233c are formed to surround the strip member 232, thus forming the frame of the dust separation unit 230. The frame members 233a, 233b, and 233c can surround the strip member 232 with its outer contour. On the other hand, the frame members 233a, 233b, and 233c can form a fixed step together with the strip member 232. That is, a portion of the side surface of the strip member 232 and the bottom surface of the frame members 233a, 233b, and 233c form the fixed step, so the housing 211 can be engaged with the fixed step.

[0167] The border components 233a, 233b, and 233c may include a first border component 233a, a second border component 233b, and a third border component 233c. The first border component 233a, the second border component 233b, and the third border component 233c are formed in a stepped manner.

[0168] The first frame member 233a may be disposed at the uppermost end of the second cyclone separator 200 and may contact the connecting member 320 of the filter section 300, which will 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.

[0169] The second border component 233b may be disposed between the first border component 233a and the third border component 233c. The diameter of the second border component 233b may be larger than the diameter of the first border component 233a and smaller than the diameter of the third border component 233c.

[0170] The third frame component 233c can be configured at the bottom and can be combined with the mesh filter 212. The diameter of the third frame component 233c can be larger than the diameter of the first frame component 233a and the second frame component 233b.

[0171] A protruding component (not shown) is formed on the upper surface of the outlet where the vortex overflow pipe 231 is located, guiding the air discharged from the outlet in a predetermined direction. In this case, the upper height of the protruding component can be the same as the height of the frame components 233a, 233b, and 233c, and the lower height of the protruding component can be the same as the height of the strip component 232. Since the height of the protruding component is the same as the height of the frame components 233a, 233b, 233c, and the strip component 232, the possibility of interference and damage with other components can be reduced.

[0172] The vortex overflow pipe 231 and the strip component 232 are connected to each other, and the strip component 232 is connected to the frame components 233a, 233b, and 233c. Therefore, the dust separation unit 230 can be configured as an integral component.

[0173] The guide vanes are structures that guide the air discharged from the first cyclone separator section 113 to the inside of the cyclone separator body 220. The guide vanes can form a flow path for the air flowing in through the inlet to flow towards the inside of the cyclone separator body 220. Therefore, the air flowing along the flow path formed by the guide vanes can swirl between the vortex overflow pipe 231 and the cyclone separator body 220.

[0174] At least a portion of the guide vanes are disposed between the cyclone separator body 220 and the vortex overflow pipe 231 and can be connected to each cyclone separator body 220 and each vortex overflow pipe 231. One side of the guide vanes can be connected to the outer surface of the vortex overflow pipe 231 along the helical direction, and the other side of the guide vanes can be connected to the inner surface of the cyclone separator body 220 along the helical direction.

[0175] Each cyclone separator body 220 and each vortex overflow pipe 231 has multiple guide vanes that extend in a spiral direction to form a vortex. Because the guide vanes extend in a spiral direction, the air and dust flowing into the inlet of the cyclone separator body 220 can form a vortex.

[0176] The airflow in the flow path of the vacuum cleaner in an embodiment of the present invention will now be described.

[0177] First, when the suction motor 114 is started, external air can flow into the dust collection box 120 through the suction section 112.

[0178] Air that has had dust separated by the first cyclone separator 113 inside the dust collection box 120 can flow into the flow path between the cyclone separator body 220 and the housing 211 through the mesh filter 212 formed in the housing 211. At this time, the flow path between the cyclone separator body 220 and the housing 211 can be formed between the outer peripheral surface of the cyclone separator body 220 and the inner peripheral surface of the housing 211.

[0179] After passing through the mesh filter 212, the air flows through the flow path between the cyclone separator body 220 and the housing 211 and then into the inside of the cyclone separator body 220 through the inlet.

[0180] Air flowing into the inner side of the cyclone separator body 220 forms a vortex and falls before flowing upwards and passing through the vortex overflow pipe 231. After passing through the vortex overflow pipe 231, the air is filtered for dust in the pre-filter 310 and then flows toward the suction motor 114 and is discharged to the outside after passing through the high-efficiency air filter and the air outlet.

[0181] Figure 4 This is a diagram illustrating the specific structure of the second cyclone separator and filter section of a vacuum cleaner according to an embodiment of the present invention. Figure 5 It is used for detailed explanation Figure 4 The diagram of region 1 shown is as follows. Figure 6 This diagram illustrates the state of removing the second cyclone separator and filter section from a vacuum cleaner according to an embodiment of the present invention. Figure 7 It is used for detailed explanation Figure 6 The diagram shows two regions.

[0182] Below, refer to Figures 4 to 7 The features of the vacuum cleaner according to an embodiment of the present invention will be described.

[0183] In an embodiment of the present invention, the second cyclone separator 200 of the vacuum cleaner 100 can be detachably attached to the main body 110 while being attached to the filter 300. The second cyclone separator 200 can be integrally and detachably attached to the main body 110 together with the filter 300.

[0184] The second cyclone separator 200 can be separated by rotating around the main body 110 in the circumferential direction. The second cyclone separator 200 can also be separated by rotating around the main body shell 111 in the circumferential direction.

[0185] The second cyclone separator 200 can be separated from the main body 110 by rotating around the central axis a1 of the dust collection box, the axis a2 of the cyclone flow, the rotating axis a3 of the suction motor, or the central axis a4 of the housing.

[0186] The filter section 300 can be detachably combined with the second cyclone separator section 200.

[0187] The filter section 300 can be separated by rotating around the second cyclone separator 200 in the circumferential direction. The filter section 300 can also be separated by rotating around the second frame member 233b in the circumferential direction.

[0188] The filter section 300 can be separated from the second cyclone separator section 200 by rotating around the central axis a1 of the dust collection box, the axis a2 of the cyclone flow, the rotating axis a3 of the suction motor, or the central axis a4 of the housing.

[0189] The rotation direction when separating the second cyclone separator 200 from the main body 110 and the rotation direction when separating the filter section 300 from the second cyclone separator 200 can be opposite to each other. Therefore, when separating the second cyclone separator 200 from the main body 110, the filter section 300 can be prevented from separating from the second cyclone separator 200, so the second filter section 300 can be separated together with the second cyclone separator 200.

[0190] The second cyclone separator 200 may include a first engagement protrusion 234 that protrudes outward. Specifically, the first engagement protrusion 234 may be formed outward from the second frame member 233b.

[0191] The second cyclone separator 200 may include a fixing part 235. The fixing part 235 may be formed to be lower than the first engagement protrusion 234. The fixing part 235 may serve to fix the second cyclone separator 200 to the main body 110 when the first engagement protrusion 234 is engaged with the first engagement groove 118 (described later) and it is pressed against the first guide groove 119 (described later).

[0192] The second cyclone separator 200 may include an inclined portion 236. The inclined portion 236 connects the first engaging protrusion 234 and the fixing portion 235. The fixing portion 235 may be formed lower than the first engaging protrusion 234, therefore the inclined portion 236 may be formed to slope downwards from the first engaging protrusion 234 toward the fixing portion 235. Thus, during the process of the first engaging protrusion 234 moving along the first guide groove 119 and engaging with the first engaging groove 118, the step between the first guide groove 119 and the first engaging groove 118 can move obliquely along the inclined portion 236. Therefore, the inclined portion 236 can stably engage the first engaging protrusion 234 with the first engaging groove 118.

[0193] The main body 110 may include a first engaging groove 118, which engages with a first engaging protrusion 234 when the second cyclone separator 200 rotates relative to the main body 110. Specifically, the first engaging groove 118 may be recessed inward from the main body shell 111.

[0194] The first engagement groove 118 can be formed correspondingly to the first engagement protrusion 234. The first engagement protrusion 234 can engage with the first engagement groove 118 to achieve engagement.

[0195] The main body 110 may include a first guide groove 119, which guides the rotation of the second cyclone separator 200 to engage the first engaging protrusion 234 and the first engaging groove 118. The first guide groove 119 extends along the circumferential direction of the main body shell 111.

[0196] The first guide groove 119 may be configured to connect with the first engagement groove 118. In this case, the first engagement groove 118 may be configured to be deeper than the guide groove 119.

[0197] The filter portion 300 may include a second engagement protrusion 321 that protrudes outward. Specifically, the second engagement protrusion 321 may be formed outward from the connecting member 320.

[0198] The second cyclone separator 200 may include a second engaging groove 237, which engages with a second engaging protrusion 321 when the filter section 300 rotates relative to the second cyclone separator 200. Specifically, the second engaging groove 237 may be formed by recessing inward from the second guide groove 238 described later.

[0199] The second cyclone separator 200 may include a second guide groove 238 that guides the rotation of the filter section 300 so that the second engaging protrusion 321 engages with the second engaging groove 237. The second guide groove 238 may be recessed inward from the first frame member 233a. The second guide groove 238 may extend in the circumferential direction of the first frame member 233a.

[0200] The second guide groove 238 can be formed by connecting with the second mating groove 237. In this case, the second mating groove 237 can be formed to be deeper than the second guide groove 238.

[0201] The first seal 239 may be disposed on the second cyclone separator 200. The first seal 239 may be disposed between the second frame member 233b and the third frame member 233c. The first seal 239 may be disposed along the circumferential direction of the third frame member 233c. When the second cyclone separator 200 is engaged with the main body 110, the first seal 239 can provide an airtight seal between the second cyclone separator 200 and the main body 110.

[0202] The filter section 300 may include a pre-filter 310, a connecting member 320, a second connecting protrusion 321, a connecting member 330, and a second seal 340.

[0203] The pre-filter 310 filters the air that has passed through the vortex overflow pipe 231 before it is drawn in by the intake motor 114. The pre-filter 310 can be housed in a filter housing 111a formed inside the main body housing 111.

[0204] The connecting component 320 can be engaged with the first frame component 233a. The connecting component 320 rotates about the axis a2 of the cyclone flow and can be engaged with the first frame component 233a.

[0205] A second engaging protrusion 321 may be provided on the connecting member 320. The inner peripheral surface of the connecting member 320 may be formed corresponding to the outer peripheral surface of the first frame member 233a.

[0206] The connecting member 330 can connect the pre-filter 310 and the connecting member 320. Multiple connecting members 330 can be arranged along the circumferential direction of the connecting member 320.

[0207] The second seal 340 may be disposed on the filter section 300. The second seal 340 may be disposed along the upper periphery of the pre-filter 310. The second seal 340 may be disposed along the circumferential direction of the pre-filter 310. When the second cyclone separator 200 is engaged with the main body 110, the second seal 340 may provide an airtight seal between the filter section 300 and the main body 110.

[0208] Figure 8a This diagram illustrates the state in which the dust collection box of a vacuum cleaner, according to an embodiment of the present invention, rotates relative to the main body. Figure 8b This diagram illustrates the state of the dust collection box of a vacuum cleaner separated from the main body, according to an embodiment of the present invention. Figure 8c Figure 1 is a diagram illustrating the state in which the second cyclone separator of the vacuum cleaner according to an embodiment of the present invention rotates relative to the main body while in conjunction with the filter section. Figure 2 is a diagram illustrating the state in which the second cyclone separator of the vacuum cleaner according to an embodiment of the present invention separates from the main body while in conjunction with the filter section. Figure 8e This diagram illustrates the state in which the filter section of a vacuum cleaner, according to an embodiment of the present invention, rotates relative to the second cyclone separator. Figure 8f This is a diagram illustrating the state in which the filter section of an embodiment of the present invention is separated from the second cyclone separator.

[0209] Below, refer to Figures 8a to 8f The specific separation process of the vacuum cleaner 100 according to an embodiment of the present invention will be described.

[0210] Reference Figure 8a and Figure 8b The dust collection box 120 can be separated from the main body 110. Specifically, the dust collection box 120 can be separated from the main body 110 by rotating along the circumferential direction of the main body 110.

[0211] Reference Figure 8c and Figure 8d The second cyclone separator 200 can be separated from the main body 110. Specifically, the second cyclone separator 200 can be separated from the main body 110 by rotating along the circumferential direction of the main body 110. At this time, the second cyclone separator 200 can be separated from the main body 110 while it is engaged with the filter section 300.

[0212] Reference Figure 8e and Figure 8f The filter section 300 can be separated from the second cyclone separator section 200. Specifically, the filter section 300 can be separated from the second cyclone separator section 200 by rotating along the circumferential direction of the second cyclone separator section 200. At this time, the direction in which the filter section 300 separates from the second cyclone separator section 200 and the direction in which the second cyclone separator section 200 separates from the main body 110 can be opposite to each other.

[0213] The present invention has been described in detail above through specific embodiments, but this is only for specific illustration of the present invention. The present invention is not limited thereto, and those skilled in the art can make modifications or improvements to the present invention within the technical concept of the present invention.

[0214] Simple variations and modifications of this invention fall within the scope of this invention, and the specific scope of protection of this invention can be clearly understood through the appended claims.

Claims

1. A vacuum cleaner, characterized in that, It includes: main body; The dust collection box is integrated into the aforementioned main body; The suction section guides air into the interior of the aforementioned dust collection box; The first cyclone separator separates dust from the air drawn in through the aforementioned suction section; The second cyclone separator separates dust from the air discharged from the first cyclone separator. and The filtration section separates dust from the air discharged from the second cyclone separator. The second cyclone separator can be detachably attached to the main body while it is attached to the filter section.

2. The vacuum cleaner according to claim 1, characterized in that, The aforementioned filter section can be detachably combined with the aforementioned second cyclone separator section.

3. The vacuum cleaner according to claim 2, characterized in that, The rotation direction when the second cyclone separator is separated from the main body is opposite to the rotation direction when the filter is separated from the second cyclone separator.

4. The vacuum cleaner according to claim 2, characterized in that, The aforementioned second cyclone separator includes: The first bonding protrusion, which protrudes outward, is formed. The aforementioned entities include: The first connecting groove engages with the first connecting protrusion when the second cyclone separation section rotates relative to the main body.

5. The vacuum cleaner according to claim 4, characterized in that, The aforementioned entities include: The first guide groove guides the rotation of the second cyclone separator so that the first engagement protrusion engages with the first engagement groove.

6. The vacuum cleaner according to claim 5, characterized in that, The first engagement groove is formed to be deeper than the guide groove.

7. The vacuum cleaner according to claim 2, characterized in that, The above-mentioned filter section includes: The second joint protrusion is formed by protruding outwards. The aforementioned second cyclone separator includes: The second connecting groove engages with the second connecting protrusion when the filter section rotates relative to the second cyclone separator section.

8. The vacuum cleaner according to claim 7, characterized in that, The aforementioned second cyclone separator includes: The second guide groove guides the rotation of the filter section so that the second engagement protrusion engages with the second engagement groove.

9. The vacuum cleaner according to claim 8, characterized in that, The aforementioned second bonding groove is formed to be deeper than the second cyclone separation section.

10. The vacuum cleaner according to claim 1, characterized in that, The vacuum cleaner also includes: The first sealing element is disposed on the second cyclone separator and provides an airtight seal between the second cyclone separator and the main body when the second cyclone separator is attached to the main body.

11. The vacuum cleaner according to claim 1, characterized in that, The vacuum cleaner also includes: The second sealing element is disposed in the filter section and provides an airtight seal between the filter section and the main body when the second cyclone separator is attached to the main body.

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