Cleaner and suction device

Abstract

Provided are a cleaner and a suction device. The cleaner comprises a main body case, a motor, a suction fan, a cooling fan, a motor housing, and a seal. The main body case includes a first inlet, a first outlet, a second inlet, and a second outlet. The suction fan allows air to flow along a first flow path extending from the first inlet to the first outlet. The cooling fan allows air to flow along a second flow path extending from the second inlet to the second outlet. The motor housing supports the motor and comprises a partition guide. The seal is coupled to the partition guide and comes into contact with the inner wall of the main body case. The partition guide and the seal partition the first flow path and the second flow path along with each other.

Description

Vacuum cleaners and suction devices

[0001] The present disclosure relates to a vacuum cleaner including a suction device.

[0002] A vacuum cleaner is a device that removes rubbish from indoor spaces and cleans them. A vacuum cleaner includes a suction device that generates suction power. This suction power draws in dust and other foreign substances along with the air, separating these foreign substances from the air and collecting them for cleaning.

[0003] The suction device may include an impeller that generates airflow and a motor that rotates the impeller. The motor is a machine that obtains rotational power from electrical energy and includes a stator and a rotor. The rotor is configured to electromagnetically interact with the stator and can rotate due to a force acting between a magnetic field and a current flowing in a coil. The impeller is connected to the rotor and can rotate as the rotor rotates, thereby generating an airflow. The suction device may further include a motor housing that accommodates the stator and the rotor, a fan shroud that covers the impeller, and the like.

[0004] Vacuum cleaners come in many different types, including canister, upright, handy, and stick types. Recently, robotic vacuum cleaners, which move autonomously around a cleaning area without user intervention and suck up dust and other debris from the surface to clean, have become increasingly popular. Furthermore, some vacuum cleaners are equipped with a mop pad to perform wet cleaning of the surface.

[0005] One aspect of the present disclosure provides a suction device and a cleaner including the same having an improved structure capable of efficiently cooling a motor and / or a motor driver and increasing the output range of the motor.

[0006] One aspect of the present disclosure provides a suction device and a cleaner including the same having an improved structure to prevent or reduce moisture-containing suction air from flowing into a space where a motor and / or a motor driver are located.

[0007] One aspect of the present disclosure provides a suction device having an improved structure for separating a conduit for sucking and filtering foreign substances such as dust and a conduit for cooling a motor and / or a motor driver, and a vacuum cleaner including the same.

[0008] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0009] According to one embodiment of the present disclosure, a vacuum cleaner may include a main body case including a first inlet, a first outlet, a second inlet, and a second outlet, a motor disposed within the main body case, a suction fan disposed within the main body case and configured to be rotatable by the motor so that air flows along a first flow path extending from the first inlet to the first outlet, a cooling fan disposed within the main body case and configured to be rotatable by the motor so that air flows along a second flow path extending from the second inlet to the second outlet, a motor housing supporting the motor and including a partition guide, and a seal coupled to the partition guide and in contact with an inner wall of the main body case. The partition guide and the seal may together partition the first flow path and the second flow path.

[0010] A vacuum cleaner according to one embodiment of the present disclosure may include a suction port configured to suck in air and foreign substances, a dust collecting device configured to collect foreign substances in the air sucked in from the suction port, a suction device configured to suck in air and foreign substances through the suction port, and a main body case that includes a first inlet, a first outlet, a second inlet, and a second outlet, and accommodates the suction device. The suction device may include a motor, a suction fan configured to be rotatable by the motor and configured to rotate to cause air, which has passed through the dust collector and entered the main body case through the first inlet, to flow toward the first outlet, a cooling fan configured to be rotatable by the motor and configured to rotate to cause air, which has passed through the second inlet, to flow toward the second outlet, which has passed through the motor, a partition guide provided to divide a first flow path extending from the first inlet to the first outlet within the main body case from a second flow path extending from the second inlet to the second outlet, and a seal disposed between an outer periphery of the partition guide and an inner wall of the main body case.

[0011] A suction device according to one embodiment of the present disclosure may include a motor, a suction fan configured to be rotatable by the motor, a cooling fan configured to be rotatable by the motor, a suction fan shroud covering the suction fan, a cooling fan shroud covering the cooling fan, a motor housing disposed between the suction fan shroud and the cooling fan shroud and covering the motor, the motor housing including a partition guide disposed between a suction channel connected to the suction fan shroud and a cooling channel connected to the cooling fan shroud and passing through the motor, and a seal provided along an outer periphery of the partition guide.

[0012] FIG. 1 is a perspective view illustrating a vacuum cleaner according to one embodiment of the present disclosure.

[0013] FIG. 2 is a cross-sectional view illustrating a main body of a vacuum cleaner according to one embodiment of the present disclosure.

[0014] FIG. 3 is a perspective view illustrating a suction device of a vacuum cleaner according to one embodiment of the present disclosure.

[0015] FIG. 4 is an exploded perspective view showing a suction device of a vacuum cleaner according to one embodiment of the present disclosure.

[0016] FIG. 5 is a cross-sectional view illustrating a main body case of a vacuum cleaner and a suction device accommodated within the main body case according to one embodiment of the present disclosure.

[0017] FIG. 6 is a cross-sectional view illustrating a main body case of a vacuum cleaner and a suction device accommodated within the main body case according to one embodiment of the present disclosure.

[0018] FIG. 7 is a drawing showing an example of a seal in which a first sealing portion and a second sealing portion are provided as one unit, in a seal included in a suction device of a vacuum cleaner according to one embodiment of the present disclosure.

[0019] FIG. 8 is a cross-sectional view showing a main body case of a vacuum cleaner according to one embodiment of the present disclosure and a suction device including a seal in which a first sealing portion and a second sealing portion are separated from each other.

[0020] FIG. 9 is a drawing showing an example of a seal in which a first sealing portion and a second sealing portion are separated from each other in a seal included in a suction device of a vacuum cleaner according to one embodiment of the present disclosure.

[0021] FIG. 10 is an enlarged cross-sectional view of a part of a main body case of a vacuum cleaner and a suction device accommodated within the main body case according to one embodiment of the present disclosure.

[0022] FIG. 11 is a cross-sectional view illustrating a main body case of a vacuum cleaner and a suction device accommodated within the main body case according to one embodiment of the present disclosure.

[0023] FIG. 12 is a cross-sectional view illustrating a main body case of a vacuum cleaner and a suction device accommodated within the main body case according to one embodiment of the present disclosure.

[0024] FIG. 13 is a graph showing the temperature of a motor over time for a vacuum cleaner according to various embodiments of the present disclosure, when the suction device includes a cooling fan and when the suction device does not include a cooling fan.

[0025] The embodiments described in this specification and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and there may be various modified examples that can replace the embodiments and drawings of this specification at the time of filing of this application.

[0026] Additionally, the same reference numbers or symbols presented in each drawing of this specification represent parts or components that perform substantially the same function.

[0027] In addition, the terminology used in this specification is used to describe embodiments and is not intended to limit and / or restrict the disclosed invention. The singular expression includes plural expressions unless the context clearly indicates otherwise. In this specification, the terms "comprise" or "have" and the like are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0028] Additionally, terms including ordinal numbers such as “first,” “second,” etc. used herein may be used to describe various components, but the components are not limited by the terms, and the terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term “and / or” includes any combination of a plurality of related listed items or any item among a plurality of related listed items.

[0029] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0030] In describing various embodiments of the present disclosure with reference to FIGS. 1 to 13, the terms “upper,” “lower,” “vertical direction,” “horizontal direction,” etc. used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms. For example, the term “vertical direction” below may mean a direction parallel to the Z direction based on the drawings, and the terms “upper” and “lower” below may mean upward in the Z direction and downward in the Z direction, respectively, based on the drawings. The term “horizontal direction” below may mean a direction parallel to the XY plane based on the drawings, respectively. For example, the X, Y, and Z directions illustrated in FIGS. 1 to 13 may be defined based on the main body (10) of the cleaner (1) according to various embodiments.

[0031] Fig. 1 is a perspective view illustrating a vacuum cleaner according to one embodiment of the present disclosure. Fig. 2 is a cross-sectional view illustrating a main body of a vacuum cleaner according to one embodiment of the present disclosure.

[0032] Referring to FIGS. 1 and 2, a cleaner (1) according to one embodiment of the present disclosure may include a main body (10) and a suction head (20).

[0033] The suction head (20) can be connected to the main body (10). The cleaner (1) can include a connecting pipe (30) connecting the suction head (20) and the main body (10). The connecting pipe (30) can be provided to be coupled to or separated from the main body (10). The connecting pipe (30) can be provided to be coupled to or separated from the suction head (20). For example, the connecting pipe (30) can include a head connector (31) provided to enable the suction head (20) to be mounted on or separated from the connecting pipe (30). The suction head (20) can be rotatably mounted on the connecting pipe (30).

[0034] The suction head (20) may be configured to suck in air and foreign substances such as dust from the surface to be cleaned. The suction head (20) may include a suction port (20a) provided to suck in air and foreign substances. The suction port (20a) may be connected to the main body (10), and air and foreign substances may be sucked in through the suction port (20a) by a suction force generated by a suction device (100) described below. The suction port (20a) may be connected to the main body (10) by a connecting pipe (30).

[0035] A brush may be provided on the suction head (20). The brush may be placed on the suction port (20a). The brush may be rotatably mounted on the suction head (20). When foreign substances on the surface to be cleaned are scattered by the rotation of the brush, the scattered foreign substances may be sucked into the suction port (20a) by the suction force generated by the suction device (100).

[0036] In this way, the cleaner (1) according to one embodiment can perform dry cleaning by sucking foreign substances from the surface to be cleaned without using water.

[0037] In addition, the cleaner (1) according to one embodiment can perform wet cleaning using water or steam. For example, the suction head (20) may include a head body (21) and a mop pad holder (22) that is rotatably mounted on the head body (21) and supports a mop pad (23). The mop pad (23) may be mounted or detachably mounted on the mop pad holder (22). For example, the mop pad (23) may be detachably mounted on the mop pad holder (22) by means of Velcro. The mop pad (23) can come into contact with a surface to be cleaned while mounted on the mop pad holder (22) and can wipe the surface to be cleaned while rotating. The head body (21) may be provided with a nozzle for spraying water onto the surface to be cleaned, or a water supply device for supplying water to a mop pad (23), and the mop pad (23) may perform wet cleaning using water sprayed onto the surface to be cleaned by the nozzle, or may perform wet cleaning using water supplied directly from the water supply device.

[0038] In addition, the cleaner (1) according to various embodiments may include various configurations for performing dry or wet cleaning. In the above, the cleaner (1) capable of performing both dry cleaning and wet cleaning using a single suction head (20) has been described as an example. However, in contrast, according to various embodiments, the cleaner (1) may include various replaceable suction heads that can be respectively mounted or detached from a connection pipe (30) by a head connector (31), and some of the suction heads may be used for dry cleaning and others may be used for wet cleaning.

[0039] The main body (10) may include a suction device (100) configured to generate suction force. The suction device (100) may include a suction fan (130) configured to generate air flow as it rotates, a motor (110) connected to the suction fan (130) and configured to generate power, etc. A detailed description of the suction device (100) will be described later.

[0040] The main body (10) may include a dust collecting device (60) configured to filter foreign substances from air sucked in from an intake port (20a). The dust collecting device (60) may be configured to filter and collect foreign substances from the sucked air.

[0041] According to one embodiment, the dust collector (60) may include a dust collector case (61). The dust collector case (61) may include a dust collector case inlet (61a) that is connected to a connecting pipe (30) and is provided to allow air and foreign substances sucked in through an inlet (20a) to flow in. The dust collector case (61) may be provided to collect foreign substances separated from the air flowing in through the dust collector case inlet (61a). A dust collector chamber for collecting foreign substances may be formed on the inside of the dust collector case (61). For example, a dust collector case door (61b) that is rotatably mounted relative to the dust collector case (61) to open and close the dust collector chamber may be provided on one side of the dust collector case (61). For example, the dust collector case (61) may include a mounting button (65) that is provided to be mounted to or separated from other components of the main body (10).

[0042] According to one embodiment, the dust collector (60) may be configured to filter foreign substances in the air using a cyclone method. The dust collector (60) may include at least one cyclone that separates foreign substances by centrifugal force generated as air and foreign substances rotate in a flow. The air inlet provided in each cyclone may have various structures capable of guiding the rotational flow of air, such as a helical inlet, a tangential inlet, or a guide vane inlet.

[0043] For example, the dust collector (60) may include a first cyclone (62) provided to primarily filter foreign substances in the air, and a plurality of second cyclones (63) provided to secondarily filter foreign substances in the air that have passed through the first cyclone (62). The first cyclone (62) may induce air to flow along a relatively large rotation radius in order to filter foreign substances of a relatively large size. The plurality of second cyclones (63) may induce air to flow along a relatively small rotation radius in order to filter foreign substances of a relatively small size.

[0044] The dust collector (60) may include a cyclone cover (64) positioned between the first cyclone (62) and the second cyclone (63). The cyclone cover (64) may be provided to allow air to pass through. The cyclone cover (64) may be provided to allow air and foreign substances discharged from the first cyclone (62) to pass through the cyclone cover (64) and flow into the second cyclone (63). In other words, the cyclone cover (64) may function as an outlet of the first cyclone (62) and an inlet of the second cyclone (63).

[0045] The air filtered of foreign substances passing through the first cyclone (62) and the second cyclone (63) can be discharged from the second cyclone (63) through the filtered air discharge port (63a) provided in the second cyclone (63). For example, the air filtered of foreign substances can be discharged upward through the filtered air discharge port (63a). The foreign substances can settle downward and be collected in the dust collection case (61).

[0046] With these configurations, the dust collector (60) can filter and collect foreign substances in the inhaled air. However, the structure of the dust collector (60) is not limited to the embodiment described above, and in various embodiments, the cleaner (1) can include dust collectors of various structures for filtering and collecting foreign substances in the air.

[0047] The dust collector (60) may be positioned upstream of the air flow from the suction device (100). The air filtered by passing through the dust collector (60) may flow toward the suction device (100). The air discharged through the filtered air outlet (63a) of the second cyclone (63) may flow toward the suction device (100).

[0048] The main body (10) may include a main body case (11). The aforementioned suction device (100) may be placed inside the main body case (11). The main body case (11) may accommodate the suction device (100). The suction device (100) may be mounted on the inside of the main body case (11). The main body case (11) may support the suction device (100). Each component of the suction device (100), such as a motor (110), a motor driver (120), a suction fan (130), a suction fan shroud (131), a cooling fan (140), a cooling fan shroud (141), a motor housing (150), a partition guide (160), and a seal (170), may be supported by the main body case (11). Each of the above components of the suction device (100) may be placed inside the main body case (11). The main body case (11) may also be referred to as a ‘suction device case (11)’.

[0049] The main body case (11) may be provided so that air is introduced and discharged as the suction device (100) operates. Air introduced through the suction port (20a) by the suction force of the suction device (100) may be introduced into the main body case (11) and discharged from the inside of the main body case (11) to the outside. A path for air to flow may be provided inside the main body case (11).

[0050] A detailed description of the structure of the main body case (11) will be described later.

[0051] The main body (10) may include an exhaust cover (14). The exhaust cover (14) may cover the main body case (11). The exhaust cover (14) may cover the case body (12) of the main body case (11), which will be described later. The exhaust cover (14) may be arranged to surround the outer circumference of the case body (12). The exhaust cover (14) may form at least a part of the exterior of the main body (10). The exhaust cover (14) may include an exhaust hole (14h) provided so that air discharged from the main body case (11) may pass therethrough and be discharged to the outside of the main body (10).

[0052] The main body (10) may include an exhaust filter (15) disposed between the exhaust cover (14) and the main body case (11). The exhaust filter (15) may be provided to filter foreign substances in the air before the air discharged from the main body case (11) is discharged to the outside of the main body (10) through the exhaust hole (14h) of the exhaust cover (14). That is, the exhaust filter (15) may be provided to further filter the air filtered by the dust collector (60).

[0053] The exhaust filter (15) can cover the case body (12) of the main body case (11), which will be described later. The exhaust filter (15) can be arranged to surround the outer circumference of the case body (12). The exhaust filter (15) can be arranged between the exhaust hole (14h) and the first outlet (11b), which will be described later.

[0054] The exhaust filter (15) may include various types of filters, such as a HEPA filter.

[0055] The vacuum cleaner (1) may include a control unit (17). The control unit (17) may be configured to acquire user input. For example, the control unit (17) may be configured to acquire user input for turning the vacuum cleaner (1) on / off, adjusting the suction strength, selecting a cleaning mode such as dry / wet cleaning, etc. For example, the control unit (17) may be provided in the main body (10).

[0056] The vacuum cleaner (1) may include a handle (40) that is provided so that the user can grip it. For example, the handle (40) may be provided on the main body (10). The user can hold the handle (40) with his / her hand and move the vacuum cleaner (1) in a desired direction.

[0057] The vacuum cleaner (1) may include a battery (50) that is provided to supply driving power to various components of the vacuum cleaner (1), such as the suction device (100). For example, the battery (50) may be provided to be mountable or detachable to the main body (10). When the battery (50) is discharged, the user can increase the operating time of the vacuum cleaner by replacing it with a pre-charged battery (50). Alternatively, for example, the battery (50) may be built into the main body (10).

[0058] The configurations of the vacuum cleaner (1) described above with reference to FIGS. 1 and 2 are merely examples of the vacuum cleaner (1) according to one embodiment of the present disclosure, and the present disclosure is not limited thereto. According to various embodiments of the present disclosure, the vacuum cleaner (1) may include various configurations.

[0059] FIG. 3 is a perspective view illustrating a suction device of a cleaner according to an embodiment of the present disclosure. FIG. 4 is an exploded perspective view illustrating a suction device of a cleaner according to an embodiment of the present disclosure. FIG. 5 is a cross-sectional view illustrating a main body case of a cleaner according to an embodiment of the present disclosure and a suction device accommodated in the main body case. FIG. 6 is a cross-sectional view illustrating a main body case of a cleaner according to an embodiment of the present disclosure and a suction device accommodated in the main body case. FIG. 7 is a drawing illustrating an example of a seal in which a first sealing portion and a second sealing portion are provided integrally in a seal included in a suction device of a cleaner according to an embodiment of the present disclosure.

[0060] Referring to FIGS. 3 to 7, a suction device (100) of a cleaner (1) according to one embodiment of the present disclosure may include a motor (110). The motor (110) may be configured to convert electrical energy into kinetic energy. The motor (110) may be configured to convert electromagnetic force into mechanical rotational force. The motor (110) may be disposed inside a main body case (11).

[0061] The motor (110) may include a stator (111) and a rotor (112) having magnetism and rotatable relative to the stator (111) by electromagnetic force. The stator (111) may include a core and a coil wound around the core. The stator (111) may have a fixed position with respect to other components such as a main body case (11), a motor housing (150), etc. Although the drawings illustrate an embodiment in which the rotor (112) is an inner-rotor type disposed inside the stator (111), the embodiment of the present disclosure is not limited thereto, and in various embodiments, the motor (110) may include an outer-rotor type in which the rotor is disposed outside the stator.

[0062] The motor (110) may include a rotating shaft (113) connected to a rotor (112). The rotating shaft (113) may be provided to transmit the rotational force of the rotor (112) to a suction fan (130). The rotating shaft (113) may be provided to transmit the rotational force of the rotor (112) to a cooling fan (140). For example, the rotating shaft (113) may have the shape of a long bar penetrating the rotor (112).

[0063] The suction device (100) may include a motor driver (120) electrically connected to a motor (110). The motor driver (120) may be configured to apply a driving current to the motor (110). The motor (110) may operate based on the driving current received from the motor driver (120). The on / off, rotation direction, rotation speed, etc. of the motor (110) may vary based on the driving current received from the motor driver (120). The motor driver (120) may include a printed circuit board on which electronic components are mounted, and may include a circuit for applying a driving current to the motor (110). The motor driver (120) may be disposed inside the main body case (11). Alternatively, according to one embodiment, the motor driver (120) may be disposed outside the main body case (11).

[0064] The suction device (100) may include a motor housing (150). The motor housing (150) may support a motor (110). For example, the motor housing (150) may support a stator (111) of the motor (110). The stator (111) may be fixed to the motor housing (150). For example, the motor housing (150) may support a rotating shaft (113). The rotating shaft (113) may be supported by the motor housing (150) while penetrating the motor housing (150). At least one bearing (B1, B2) may be mounted on the motor housing (150), whereby the motor housing (150) may rotatably support the rotating shaft (113).

[0065] The motor housing (150) can cover the motor (110). The motor housing (150) can surround the outer periphery of the motor (110). The motor housing (150) can surround the motor (110) in a horizontal direction. A space can be formed between the inner surface of the motor housing (150) and the motor (110). The motor housing (150) can cover the entire outer periphery of the motor (110) or only a portion of it.

[0066] For example, the motor housing (150) may include a first housing (151) that supports one side of the motor (110) and a second housing (152) that supports the other side of the motor (110). For example, the first housing (151) may support one side of the motor (110) in the direction of the rotation shaft (113) (e.g., the vertical direction (Z)), and the second housing (152) may support the other side of the motor (110) in the direction of the rotation shaft (113) (e.g., the vertical direction (Z)).

[0067] The first housing (151) can support the stator (111). For example, the first housing (151) can support the stator (111) by contacting the outer surface of the stator (111). The first housing (151) can rotatably support the rotary shaft (113). The first housing (151) can include a first bearing mounting portion (151b) in which a first bearing (B1) is installed. The first bearing mounting portion (151b) can be penetrated by the rotary shaft (113). The first bearing mounting portion (151b) can have a shape of a hole in which the first bearing (B1) can be mounted and through which the rotary shaft (113) can pass.

[0068] The first housing (151) may cover at least a portion of the motor (110). The first housing (151) may have a cylindrical shape formed to approximately surround the outer periphery of the motor (110). The first housing (151) may include a motor cover portion (151a) surrounding the motor (110). The motor cover portion (151a) may form an inner periphery of the first housing (151). The motor cover portion (151a) may surround the outer side of the motor (110). The motor cover portion (151a) may surround the motor (110) in a horizontal direction.

[0069] The second housing (152) can support the stator (111). For example, the second housing (152) can support the stator (111) by contacting the outer surface of the stator (111). The second housing (152) can include a motor support (152a) that supports the outer surface of the stator (111). The second housing (152) can rotatably support the rotary shaft (113). The second housing (152) can include a second bearing mounting portion (152b) in which a second bearing (B2) is installed. The second bearing mounting portion (152b) can be penetrated by the rotary shaft (113). The second bearing mounting portion (152b) can have a shape of a hole in which the second bearing (B2) can be mounted and through which the rotary shaft (113) can pass.

[0070] The second housing (152) may cover a portion of the motor (110). When a portion of the motor (110) is covered by the first housing (151), the second housing (152) may cover at least a portion of the remaining portion of the motor (110) that is not covered by the first housing (151). For example, the motor support (152a) may cover a portion of the motor (110).

[0071] For example, the first housing (151) may be positioned lower than the second housing (152). For example, the first housing (151) may support and cover the lower portion of the motor (110), and the second housing (152) may support and cover the upper portion of the motor (110).

[0072] The first housing (151) and the second housing (152) can be coupled to each other. For example, the motor support (152a) of the second housing (152) can be coupled to the first housing (151). For example, the first housing (151) and the second housing (152) can be coupled to each other by fastening members such as screws. The first housing (151) and the second housing (152) coupled to each other can cover almost all of the motor (110). Alternatively, the first housing (151) and the second housing (152) can be formed integrally.

[0073] The suction device (100) may include a suction fan (130). The suction fan (130) may generate a flow of air as it rotates. The suction fan (130) may generate a suction force to suck in air and foreign substances through the suction port (20a) as it rotates. When the suction fan (130) rotates, foreign substances and air on the surface to be cleaned may be sucked in through the suction port (20a), and the air filtered of foreign substances while passing through the dust collector (60) may sequentially pass through the main body case (11) and the exhaust cover (14) and be discharged to the outside of the cleaner (1).

[0074] The suction fan (130) may be arranged so that air is drawn into the main body case (11) through the first inlet (11a) described later as it rotates, and air is discharged from the main body case (11) through the first outlet (11b) described later. As the suction fan (130) rotates, air can flow along the first flow path (F1) within the main body case (11). The suction fan (130) may be arranged inside the main body case (11). The suction fan (130) may be arranged outside the motor housing (150).

[0075] In various embodiments, the suction fan (130) of the suction device (100) may include various types of fans, such as an axial fan, a centrifugal fan, a diagonal fan, etc.

[0076] The suction device (100) may include a suction fan shroud (131). The suction fan shroud (131) may cover the suction fan (130). The suction fan shroud (131) may surround an outer periphery of the suction fan (130). The suction fan shroud (131) may surround the suction fan (130) in a horizontal direction. The inner surface of the suction fan shroud (131) and the suction fan (130) may be spaced apart from each other.

[0077] The suction fan shroud (131) may be configured to guide the flow of air as the suction fan (130) rotates. The suction fan shroud (131) may be positioned on the outside of the motor housing (150). For example, the suction fan shroud (131) may be coupled to the outside of the motor housing (150).

[0078] For example, the suction fan shroud (131) and the motor housing (150) may be arranged in the vertical direction (Z). For example, the suction fan shroud (131) may be arranged on the lower side of the motor housing (150).

[0079] The motor housing (150) may be arranged so that air flows through the motor housing (150) when the suction fan (130) rotates. The first flow path (F1) between the first inlet (11a) and the first outlet (11b) of the main body case (11), which will be described later, may pass through the motor housing (150). For example, the first flow path (F1) may pass through the first housing (151).

[0080] For example, the motor housing (150) may include an air guide (151c) configured to guide air flowing as the suction fan (130) rotates. The air guide (151c) may be configured to guide air flowing from the first inlet (11a) toward the first outlet (11b) along the first flow path (F1). The air guide (151c) may be connected to the suction fan shroud (131).

[0081] The air guide (151c) may be arranged downstream from the suction fan (130) on the first flow path (F1). The air guide (151c) may be arranged downstream from the suction fan shroud (131) on the first flow path (F1). The air guide (151c) may be arranged to guide the flow of air passing through the suction fan shroud (131). For example, the air guide (151c) may be arranged to guide air drawn in from the suction fan shroud (131) upward.

[0082] An air guide (151c) may be provided in the first housing (151). The air guide (151c) may be provided along the periphery of the first housing (151). The air guide (151c) may be provided radially outside the motor cover portion (151a) of the first housing (151). For example, the air guide (151c) may be positioned horizontally outside the motor cover portion (151a). For example, the air guide (151c) may be arranged between the motor cover portion (151a) and the outer surface (151e) of the air guide (151c).

[0083] The air guide (151c) may be provided with a plurality of vanes (151d). The plurality of vanes (151d) may be provided to guide the direction of air flow within the air guide (151c). The plurality of vanes (151d) may be provided to guide the rotation of air flowing along the air guide (151c). Each of the plurality of vanes (151d) may extend in a direction inclined with respect to the extension direction of the air guide (151c).

[0084] The first housing (151) may be referred to as a ‘diffuser (151)’.

[0085] The structure of the air guide (151c) described above is only one example of a motor housing (150) provided to guide air flowing as the suction fan (130) rotates, and the embodiment of the present disclosure is not limited thereto.

[0086] By the structure of the motor housing (150) as described above, the air flowing due to the rotation of the suction fan (130) can be prevented from contacting the motor (110). In particular, in the case of the cleaner (1) according to various embodiments of the present disclosure, when the cleaner (1) performs wet cleaning, there is a possibility that air and moisture may be sucked together through the suction port (20a). If the sucked moisture comes into contact with the motor (110), there is a concern that damage may occur to components such as the motor (110) due to the occurrence of a short circuit, etc. In various embodiments of the present disclosure, the air flowing by the suction fan (130) flows along the outer side of the motor cover part (151a) (for example, along the air guide (151c)), and the motor (110) is disposed on the inner side of the motor cover part (151a), so that even if the suction fan (130) rotates, the air flowing thereby may not directly pass through the motor (110).

[0087] Meanwhile, in order to improve the operating efficiency of the suction device (100), the output range needs to be improved so that the motor (110) can provide high output while efficiently cooling the motor (110). As the suction fan (130) rotates, the rotating air flows along the motor housing (150) and can indirectly dissipate heat generated from the motor (110), but it may be difficult to efficiently cool the motor (110) with only this indirect heat dissipation method.

[0088] To prevent such problems, in one embodiment of the present disclosure, the suction device (100) may include a cooling fan (140). The cooling fan (140) may generate a flow of air as it rotates. The cooling fan (140) may be configured to cool the motor (110) by allowing air to flow as it rotates. The cooling fan (140) may be configured to allow air to flow through the motor (110) as it rotates. Furthermore, according to one embodiment, the cooling fan (140) may be configured to cool the motor driver (120) by allowing air to flow as it rotates.

[0089] The cooling fan (140) may be arranged so that air is introduced into the main body case (11) through the second inlet (11c) described later as it rotates, and air is discharged from the main body case (11) through the second outlet (11d) described later. As the cooling fan (140) rotates, air can flow along the second flow path (F2) within the main body case (11). The cooling fan (140) may be arranged inside the main body case (11). The cooling fan (140) may be arranged on the other side of the motor housing (150) opposite to the side where the suction fan (130) is located.

[0090] For example, a cooling fan (140) may be placed between the motor (110) and the motor driver (120). As a result, when the cooling fan (140) rotates, the motor (110) and the motor driver (120) can be efficiently cooled together.

[0091] For example, the cooling fan (140) may be positioned upstream of the second flow path (F2) from the motor (110). For example, the cooling fan (140) may be positioned downstream of the second flow path (F2) from the motor driver (120).

[0092] In various embodiments, the cooling fan (140) of the suction device (100) may include various types of fans, such as an axial fan, a centrifugal fan, a diagonal fan, etc.

[0093] A cooling fan (140) may be connected to a motor (110). The cooling fan (140) may be connected to the motor (110) and rotated by rotational force generated by the motor (110). The cooling fan (140) may be connected to a rotor (112) via a rotational shaft (113). For example, the suction fan (130) and the cooling fan (140) may be connected to the same motor (110) via the rotational shaft (113). When the motor (110) operates, the rotational shaft (113) rotates, and the suction fan (130) and the cooling fan (140) may rotate simultaneously.

[0094] For example, the suction fan (130) may be placed on one side of the motor (110), and the cooling fan (140) may be placed on the other side of the motor (110). That is, the motor (110) may be placed between the suction fan (130) and the cooling fan (140). The cooling fan (140) may be placed between the motor (110) and the motor driver (120).

[0095] Alternatively, in various embodiments, the suction device (100) may include multiple motors, and the suction fan (130) and the cooling fan (140) may be connected to different motors and configured to rotate independently of each other.

[0096] However, for convenience of explanation, the following description assumes an embodiment in which the suction fan (130) and the cooling fan (140) are connected to the same motor (110) as shown in the drawings.

[0097] In order to secure a sufficient flow rate of air flowing along the second flow path (F2) when the cooling fan (140) rotates, the distance (d4) between the cooling fan (140) and the motor driver (120) may be designed to be a certain distance or more. For example, the distance (d4) between the cooling fan (140) and the motor driver (120) may be approximately 3 mm or more.

[0098] The suction device (100) may include a cooling fan shroud (141). The cooling fan shroud (141) may cover the cooling fan (140). The cooling fan shroud (141) may surround the outer periphery of the cooling fan (140). The cooling fan shroud (141) may surround the cooling fan (140) in a horizontal direction.

[0099] The cooling fan shroud (141) may be configured to guide the flow of air as the cooling fan (140) rotates. The cooling fan shroud (141) may be positioned on the opposite side of the motor housing (150) from the side on which the suction fan shroud (131) is positioned. That is, the motor housing (150) may be positioned between the suction fan shroud (131) and the cooling fan shroud (141).

[0100] The inner surface of the cooling fan shroud (141) and the cooling fan (140) may be spaced apart from each other. If the distance (d3) between the cooling fan (140) and the cooling fan shroud (141) is too large, the flow rate may decrease, and if it is too small, the load according to the torque applied to the motor (110) may increase, thereby deteriorating the performance of the motor (110). Considering these points, the distance between the cooling fan (140) and the cooling fan shroud (141) may be determined so that the flow rate passing through the cooling fan shroud (141) can be within an appropriate range. For example, the distance (d3) between the cooling fan (140) and the cooling fan shroud (141) may be approximately 0.5 to 1.5 mm.

[0101] For example, the cooling fan shroud (141) and the motor housing (150) may be arranged in the vertical direction (Z). For example, the cooling fan shroud (141) may be arranged on the upper side of the motor housing (150).

[0102] For example, a cooling fan shroud (141) may be placed between the motor (110) and the motor driver (120).

[0103] For example, the cooling fan shroud (141) may be fixed to the stator (111) of the motor (110). For example, the cooling fan shroud (141) may be fixed to the second housing (152). The cooling fan shroud (141) may be coupled to the second housing (152) or may be formed integrally with the second housing (152).

[0104] For example, the cooling fan shroud (141) may be coupled with the motor driver (120). For example, the cooling fan shroud (141) may support the motor driver (120). Alternatively, the motor driver (120) may be supported by a separate component other than the cooling fan shroud (141).

[0105] The motor housing (150) may be arranged so that air flows through the motor housing (150) when the cooling fan (140) rotates. A second flow path (F2) between the second inlet (11c) and the second outlet (11d) of the main body case (11), which will be described later, may pass through the motor housing (150). For example, the second flow path (F2) may pass through the first housing (151). For example, a separation space may be formed between the motor cover (151a) and the motor (110), and the second flow path (F2) may pass through the separation space. For example, the second flow path (F2) may pass through the second housing (152). For example, the second housing (152) may have a plurality of motor supports (152a), and the plurality of motor supports (152a) may be arranged to be spaced apart from each other so that air may pass between them.

[0106] By this structure, when the cooling fan (140) rotates, air can flow through the motor housing (150) and cool the motor (110) placed inside the motor housing (150). However, the structure of the motor housing (150) described above is only one example of a motor housing (150) having a structure that allows air to pass through the motor (110) as the cooling fan (140) rotates, and the embodiments of the present disclosure are not limited thereto.

[0107] The suction device (100) may be placed inside the main body case (11). The suction device (100) may be mounted on the inside of the main body case (11). The suction device (100) may be supported by the main body case (11). The main body case (11) may be configured so that external air is introduced and internal air is discharged when the suction device (100) operates.

[0108] The main body case (11) may include a first inlet (11a) and a first outlet (11b). The first inlet (11a) may be provided so that air is introduced into the main body case (11) as the suction fan (130) rotates. When the suction fan (130) rotates, air that has passed through the dust collector (60) and been filtered may be introduced into the main body case (11) through the first inlet (11a). The first outlet (11b) may be provided so that air is discharged to the outside of the main body case (11) as the suction fan (130) rotates. The first inlet (11a) and the first outlet (11b) may be spaced apart from each other.

[0109] A first flow path (F1) extending from a first inlet (11a) to a first outlet (11b) may be provided on the inside of the main body case (11). For example, the first flow path (F1) may extend from the first inlet (11a) through the suction fan (130) to the first outlet (11b). The first flow path (F1) may pass through the suction fan shroud (131). The first flow path (F1) may pass through the motor housing (150). The first flow path (F1) may be arranged on the outside of the motor cover portion (151a). For example, the first flow path (F1) may pass through the air guide (151c).

[0110] When the suction fan (130) rotates, air passing through the dust collector (60) can be drawn into the main body case (11) through the first inlet (11a), flow along the first flow path (F1), and then be discharged through the first outlet (11b). The suction fan (130) can be placed in the first flow path (F1). When the suction fan (130) rotates, air on the first flow path (F1) can flow from the first inlet (11a) through the suction fan (130) toward the first outlet (11b). The first flow path (F1) can be referred to as a 'suction flow path (F1)'.

[0111] The main body case (11) may include a case body (12). The case body (12) may support a suction device (100). The suction device (100) may be mounted on the inside of the case body (12). The case body (12) may cover the periphery of the suction device (100). The case body (12) may surround the suction device (100) in a horizontal direction.

[0112] The first outlet (11b) may be formed in the case body (12). For example, the first outlet (11b) may be formed on the outer circumference of the case body (12). The first outlet (11b) may include a plurality of holes formed along at least a portion of the circumference of the case body (12). The exhaust cover (14) and the exhaust filter (15) described above may be arranged on the outside of the case body (12). The exhaust cover (14) and the exhaust filter (15) described above may cover at least a portion of the outer circumference of the case body (12) and may cover the first outlet (11b).

[0113] The main body case (11) may include a fan grill (13) covering the first inlet (11a). The fan grill (13) may have a grille shape having a hole to allow air to flow in through the first inlet (11a).

[0114] The fan grill (13) can be coupled to the case body (12). The fan grill (13) can be coupled to one end of the case body (12) in the direction where the first inlet (11a) is located. For example, the fan grill (13) can be coupled to the lower side of the case body (12). Alternatively, the case body (12) and the fan grill (13) can be formed integrally.

[0115] By this structure, when the suction fan (130) rotates, the air sucked in through the suction port (20a) can pass through the dust collector (60), the fan grill (13) and the first inlet (11a), and then flow into the main body case (11). The air sucked in through the first inlet (11a) can flow along the first flow path (F1) to the first outlet (11b), and in the process, can pass through the suction fan (130), the suction fan shroud (131), the air guide (151c) of the motor housing (150), etc. The air discharged from the main body case (11) through the first outlet (11b) can pass through the exhaust filter (15) and the exhaust hole (14h) and be discharged to the outside of the main body (10), i.e., the outside of the cleaner (1).

[0116] The main body case (11) may include a second inlet (11c) and a second outlet (11d). The second inlet (11c) may be provided so that air is introduced into the main body case (11) as the cooling fan (140) rotates. When the cooling fan (140) rotates, air from outside the cleaner (1) may be introduced into the main body case (11) through the second inlet (11c). The second outlet (11d) may be provided so that air is discharged to the outside of the main body case (11) as the cooling fan (140) rotates. The second inlet (11c) and the second outlet (11d) may be spaced apart from each other.

[0117] A second flow path (F2) extending from a second inlet (11c) to a second outlet (11d) may be provided on the inside of the main body case (11). For example, the second flow path (F2) may extend from the second inlet (11c) through a cooling fan (140) and a motor (110) to a second outlet (11d). The second flow path (F2) may pass through a cooling fan shroud (141). The second flow path (F2) may pass through a motor housing (150). For example, the second flow path (F2) may pass through a space between a motor cover portion (151a) and the motor (110). At least a portion of the second flow path (F2) may be disposed on the inside of the motor cover portion (151a). For example, the second flow path (F2) may pass through holes between the plurality of motor supports (152a) of the second housing (152). The second flow path (F2) may pass through the motor driver (120) or an area adjacent thereto so that air may cool not only the motor (110) but also the motor driver (120) as it flows along the second flow path (F2).

[0118] When the cooling fan (140) rotates, air outside the cleaner (1) can be drawn into the main body case (11) through the second inlet (11c), flow along the second flow path (F2), and then be discharged through the second outlet (11d). The cooling fan (140) can be placed in the second flow path (F2). When the cooling fan (140) rotates, air on the second flow path (F2) can flow from the second inlet (11c) through the cooling fan (140) and the motor (110) toward the second outlet (11d). The second flow path (F2) can be referred to as a 'cooling flow path (F2)'.

[0119] For example, the second inlet (11c) may be formed in the case body (12). For example, the second inlet (11c) may be formed on the outer circumference of the case body (12). The second inlet (11c) may include a plurality of holes formed along at least a portion of the circumference of the case body (12). In one embodiment, as shown in FIGS. 5 and 6, the second inlet (11c) may not be covered by the exhaust cover (14) and the exhaust filter (15). In another embodiment, unlike as shown in FIGS. 5 and 6, the second inlet (11c) may be covered by the exhaust cover (14) and the exhaust filter (15).

[0120] For example, the second outlet (11d) may be formed in the case body (12). For example, the second outlet (11d) may be formed on the outer circumference of the case body (12). The second outlet (11d) may include a plurality of holes formed along at least a portion of the circumference of the case body (12). In one embodiment, as shown in FIGS. 5 and 6, the second outlet (11d) may not be covered by the exhaust cover (14) and the exhaust filter (15). In another embodiment, unlike as shown in FIGS. 5 and 6, the second outlet (11d) may be covered by the exhaust cover (14) and the exhaust filter (15).

[0121] For example, the second inlet (11c) and the second outlet (11d) may be arranged side by side in the vertical direction (Z). However, the arrangement of the second inlet (11c) and the second outlet (11d) is not limited thereto.

[0122] Although FIGS. 5 and 6 illustrate an embodiment in which the second inlet (11c) is positioned above the second outlet (11d), the present invention is not limited thereto, and the second inlet (11c) may be positioned below the second outlet (11d). Alternatively, the second inlet (11c) and the second outlet (11d) may be positioned horizontally parallel to each other.

[0123] The second flow path (F2) may include a first portion (F2a) passing through the motor (110) and the cooling fan (140), and a second portion (F2b) passing between the motor (110) and the motor cover (151a). The first portion (F2a) of the second flow path (F2) may be connected to the second inlet (11c), and the second portion (F2b) of the second flow path (F2) may be connected to the second outlet (11d). The first portion (F2a) and the second portion (F2b) of the second flow path (F2) may be connected to each other. For example, as illustrated in FIG. 6, when the cooling fan (140) rotates, air drawn in through the second inlet (11c) may sequentially flow along the first part (F2a) and the second part (F2b) of the second flow path (F2) and then be discharged through the second outlet (11d). More specifically, when the cooling fan (140) rotates, air drawn in through the second inlet (11c) may sequentially pass through the motor driver (120), the cooling fan shroud (141), and the motor (110) and then be discharged through the second outlet (11d).

[0124] However, the direction in which air flows along the second flow path (F2) when the cooling fan (140) rotates is not limited to that described above. For example, depending on the rotational direction of the cooling fan (140), the air may sequentially pass through the second part (F2b) and the first part (F2a) of the second flow path (F2). Specifically, depending on the rotational direction of the cooling fan (140), the air may sequentially pass through the motor (110), the cooling fan shroud (141), and the motor driver (120). In this case, a second inlet into which air flows in may be formed at the position of the second outlet (11d) illustrated in FIGS. 5 and 6, and a second outlet through which air is discharged may be formed at the position of the second inlet (11c) illustrated in FIGS. 5 and 6.

[0125] By this structure, when the cooling fan (140) rotates, air from outside the cleaner (1) can pass through the second inlet (11c) and flow into the main body case (11). The air introduced through the second inlet (11c) can flow along the second flow path (F2) to the second outlet (11d), and in the process, can pass through the cooling fan (140), the motor (110), the motor driver (120), the space between the motor cover (151a) and the motor (110), the second housing (152), etc. The air inside the main body case (11) can be discharged to the outside of the main body (10), i.e., the outside of the cleaner (1), through the second outlet (11d).

[0126] In this way, the vacuum cleaner (1) according to one embodiment may include a passage (including a first passage (F1)) for sucking and filtering foreign substances such as dust, and a passage (including a second passage (F2)) for cooling the motor (110) and / or the motor driver (120). At this time, in order to improve the cooling efficiency of the motor (110) and / or the motor driver (120), it is preferable that the first passage (F1) and the second passage (F2) are separated from each other. In addition, in order to prevent or reduce the intake air containing moisture flowing along the first passage (F1) from flowing into the motor (110) and / or the motor driver (120), it is preferable that the first passage (F1) and the second passage (F2) are separated from each other.

[0127] Accordingly, the main body case (11) of the cleaner (1) according to one embodiment of the present disclosure and the suction device (100) mounted thereon may have a structure for dividing the first flow path (F1) and the second flow path (F2).

[0128] The first inlet (11a) and the second inlet (11c) may be spaced apart from each other. The first outlet (11b) and the second outlet (11d) may be spaced apart from each other. The first inlet (11a) and the second outlet (11d) may be spaced apart from each other. The second inlet (11c) and the first outlet (11b) may be spaced apart from each other.

[0129] Since the first flow path (F1) is provided on the outside of the motor cover part (151a) and the second flow path (F2) is provided on the inside of the motor cover part (151a), the first flow path (F1) and the second flow path (F2) can be partitioned at least partially by the motor cover part (151a). However, even by the motor cover part (151a), the first flow path (F1) and the second flow path (F2) may not be completely partitioned from each other.

[0130] According to one embodiment of the present disclosure, the suction device (100) may include a partition guide (160) and a seal (170). The partition guide (160) and the seal (170) may be arranged to partition a first flow path (F1) and a second flow path (F2).

[0131] The motor housing (150) may include a partition guide (160). The partition guide (160) may be arranged on the inside of the main body case (11). The partition guide (160) may be arranged between the first flow path (F1) and the second flow path (F2) within the main body case (11). The partition guide (160) may be arranged to divide the first flow path (F1) and the second flow path (F2). The partition guide (160) may block the first flow path (F1) and the second flow path (F2) from each other so that the air flowing along the first flow path (F1) and the air flowing along the second flow path (F2) do not mix with each other.

[0132] The partition guide (160) may also be referred to as a ‘third housing (160)’.

[0133] The partition guide (160) may extend from the first housing (151). For example, the partition guide (160) may extend from the motor cover portion (151a). For example, the partition guide (160) may extend from the upper portion of the motor cover portion (151a). For example, the partition guide (160) may extend from one side of the air guide (151c) in the direction in which air flowing along the first flow path (F1) is discharged when the suction fan (130) rotates (i.e., the downstream side of the air guide (151c)).

[0134] The partition guide (160) can be extended from the first housing (151) to come close to the inner wall of the main body case (11). The partition guide (160) can be extended from the motor cover portion (151a) to come close to the inner wall of the main body case (11). For example, the partition guide (160) can be extended from the motor cover portion (151a) toward the inner wall of the main body case (11). For example, the partition guide (160) can be extended from one side of the air guide (151c) in the direction in which air flowing along the first flow path (F1) is discharged when the suction fan (130) rotates (i.e., the downstream side of the air guide (151c)) toward the inner wall of the main body case (11).

[0135] The partition guide (160) may include a first end (161) connected to the first housing (151) and a second end (162) opposite to the first end (161). The partition guide (160) may extend from the first end (161) to the second end (162) in a direction approaching the inner wall of the main body case (11).

[0136] The partition guide (160) can be coupled to the first housing (151). For example, the partition guide (160) can be coupled to the motor cover portion (151a). For example, the partition guide (160) can be coupled to the upper portion of the motor cover portion (151a).

[0137] Alternatively, the partition guide (160) may be formed integrally with the first housing (151).

[0138] A partition guide (160) may be provided along the perimeter of the motor housing (150). The partition guide (160) may be provided along the perimeter of the first housing (151). The partition guide (160) may be provided along the perimeter of the motor cover portion (151a). For example, the partition guide (160) may be formed along the perimeter on the inside of the main body case (11) and may have a roughly circular shape to divide the first flow path (F1) and the second flow path (F2).

[0139] The partition guide (160) can surround at least a portion of the motor (110).

[0140] The partition guide (160) can guide air flowing along the first flow path (F1) toward the first outlet (11b) when the suction fan (130) rotates. For example, the partition guide (160) can guide air passing through the air guide (151c) toward the first outlet (11b).

[0141] The partition guide (160) may include a first flow guide surface (163) provided to guide air flowing along the first flow path (F1). The first flow guide surface (163) may be provided between the first end (161) and the second end (162) of the partition guide (160) and may be provided to cover one side of the first flow path (F1). For example, the first flow guide surface (163) may extend from the first end (161) toward the second end (162) so as to become closer to the inner wall of the main body case (11) so as to guide air flowing along the first flow path (F1) toward the first outlet (11b). For example, the first flow guide surface (163) may extend so that the inclination with respect to the vertical direction (Z) increases from the first end (161) toward the second end (162).

[0142] However, the shape of the first euro guide surface (163) is not limited to that described above, and the partition guide (160) may include a first euro guide surface (163) having various shapes so as to guide air flowing along the first euro (F1).

[0143] The partition guide (160) can guide air flowing along the second flow path (F2) when the cooling fan (140) rotates. For example, the partition guide (160) can guide air flowing along the second part (F2b) of the second flow path (F2). For example, as illustrated in FIG. 6, the partition guide (160) can guide air flowing along the second part (F2b) of the second flow path (F2) to move toward the second outlet (11d). For example, if a second inlet is formed at the position of the second outlet (11d) shown in FIGS. 5 and 6 and a second outlet is formed at the position of the second inlet (11c) so that the direction of air flowing along the second flow path (F2) is opposite to that shown in FIG. 6, the partition guide (160) can guide the air flowing in from the second inlet to flow along the second part (F2b) of the second flow path (F2).

[0144] The partition guide (160) may include a second flow guide surface (164) provided to guide air flowing along the second flow path (F2). The second flow guide surface (164) may be provided between the first end (161) and the second end (162) of the partition guide (160) and may be provided to cover one side of the second flow path (F2). For example, the second flow guide surface (164) may extend from the first end (161) toward the second end (162) so as to become closer to the inner wall of the main body case (11). For example, the second flow guide surface (164) may extend so as to have an increasing inclination with respect to the vertical direction (Z) from the first end (161) toward the second end (162).

[0145] However, the shape of the second euro guide surface (164) is not limited to that described above, and the partition guide (160) may include a second euro guide surface (164) having various shapes so as to guide air flowing along the second euro (F2).

[0146] The seal (170) may be placed on the inside of the main body case (11). The seal (170) may be in contact with the inner wall of the main body case (11). The seal (170) may be provided so that the suction device (100) may be mounted on the main body case (11).

[0147] A seal (170) may be provided to partition a first flow path (F1) and a second flow path (F2) within the main body case (11). The seal (170) may be provided to seal a gap between a partition guide (160) and the main body case (11). The seal (170) may extend from the partition guide (160) toward the inner wall of the main body case (11). As a result, the seal (170) may partition the first flow path (F1) and the second flow path (F2) together with the partition guide (160).

[0148] A seal (170) may be provided along the outer periphery of the partition guide (160). The seal (170) may be positioned between the outer periphery of the partition guide (160) and the inner wall of the main body case (11). For example, the seal (170) may be formed along the periphery on the inner side of the main body case (11) and may have a substantially annular shape to partition the first flow path (F1) and the second flow path (F2).

[0149] The seal (170) can be coupled to the partition guide (160). For example, the seal (170) can be coupled to one end of the side opposite to the first housing (151) in a direction extending from the first housing (151) of the partition guide (160). For example, the seal (170) can be coupled to one end of the side opposite to the motor cover (151a) in a direction extending from the motor cover (151a) of the partition guide (160). For example, the seal (170) can be coupled to one end adjacent to the inner wall of the main body case (11) of the partition guide (160). That is, the seal (170) can be coupled to the second end (162) of the partition guide (160). For example, the seal (170) can be fittedly coupled to the second end (162) of the partition guide (160).

[0150] The seal (170) may be provided to be elastically deformable. The seal (170) may include an elastic material. By including the elastically deformable seal (170), the suction device (100) can be more easily mounted on the inside of the main body case (11). In addition, the gap between the partition guide (160) and the inner wall of the main body case (11) can be efficiently sealed by the seal (170), thereby allowing the first flow path (F1) and the second flow path (F2) to be more efficiently partitioned from each other. In addition, vibration generated by the operation of the motor (110) by the seal (170) can be more efficiently alleviated. For example, the seal (170) may include various materials such as rubber, polytetrafluoroethylene (PTFE) (Teflon), and silicone.

[0151] In this way, since the suction device (100) includes a structure that divides the first flow path (F1) and the second flow path (F2) using the partition guide (160) and the seal (170), it is possible to efficiently prevent suction air containing moisture from flowing into the motor (110) and / or the motor driver (120) with just a simple structure, and the motor (110) and / or the motor driver (120) can be prevented from overheating by being cooled by the air flowing along the second flow path (F2). In this way, the cooling efficiency of the motor (110) and / or the motor driver (120) is improved, thereby increasing the output range.

[0152] Below, an example of the structure of the seal (170) is described in more detail.

[0153] The seal (170) may include a first sealing portion (171) extending from the partition guide (160) to the inner wall of the main body case (11). The first sealing portion (171) may extend from the second end (162) of the partition guide (160) to the inner wall of the main body case (11). The first sealing portion (171) may contact the partition guide (160) and the inner wall of the main body case (11), respectively.

[0154] The first sealing portion (171) may be arranged between the first flow path (F1) and the second flow path (F2). The first sealing portion (171) may be arranged between both the second inlet (11c) and the second outlet (11d), and the first outlet (11b). For example, the first sealing portion (171) may be arranged above the first outlet (11b), and below the second inlet (11c) and the second outlet (11d). The first sealing portion (171) may partition the first flow path (F1) and the second flow path (F2).

[0155] The first sealing portion (171) may be provided along the outer perimeter of the partition guide (160). For example, the first sealing portion (171) may be provided along the second end (162) of the partition guide (160). For example, the first sealing portion (171) may have a roughly circular shape provided along the second end (162) of the partition guide (160).

[0156] The first sealing portion (171) can be coupled to the partition guide (160). For example, the first sealing portion (171) can be coupled to the second end (162) of the partition guide (160). For example, the first sealing portion (171) can be fitted to the partition guide (160).

[0157] The seal (170) may include a second sealing portion (172) extending from the first housing (151) to the inner wall of the main body case (11). The second sealing portion (172) may contact the inner walls of the first housing (151) and the main body case (11), respectively. For example, the second sealing portion (172) may extend from the outer circumferential surface (151e) of the first housing (151) to the inner wall of the main body case (11).

[0158] The second sealing portion (172) may be provided to partition the space between the first housing (151) and the inner wall of the main body case (11) from the first flow path (F1). The second sealing portion (172) may be provided to partition the space between the outer surface (151e) of the first housing (151) and the inner wall of the main body case (11) from the first flow path (F1). More specifically, the second sealing portion (172) may be provided to partition the space between at least the lower portion of the outer surface (151e) of the first housing (151) and the inner wall of the main body case (11) from the first flow path (F1). For example, the second sealing portion (172) may be arranged between the space between the outer surface (151e) of the first housing (151) and the inner wall of the main body case (11) and the first flow path (F1). More specifically, the second sealing portion (172) may be arranged between the space between at least the lower portion of the outer surface (151e) of the first housing (151) and the inner wall of the main body case (11) and the first flow path (F1). For example, the second sealing portion (172) may be arranged on the lower side of the first outlet (11b). Accordingly, the second sealing portion (172) may prevent air moving along the first flow path (F1) from being discharged to the first outlet (11b) and moving downward.

[0159] The second sealing portion (172) may be provided along the outer circumference of the motor housing (150). For example, the second sealing portion (172) may be provided along the outer circumference (151e) of the first housing (151). For example, the second sealing portion (172) may have a roughly circular shape provided along the circumference of the first housing (151).

[0160] The second sealing portion (172) may be coupled to the first housing (151). For example, the first housing (151) may include a seal engaging portion (151f) provided to allow the second sealing portion (172) to be coupled thereto. For example, the seal engaging portion (151f) may protrude from the outer circumferential surface (151e) of the first housing (151). For example, the seal engaging portion (151f) may extend along the circumferential direction of the first housing (151). For example, the second sealing portion (172) may be fitted into the seal engaging portion (151f).

[0161] The first sealing portion (171) and the second sealing portion (172) may be provided so that the suction device (100) is mounted on the inner wall of the main body case (11), respectively. The first sealing portion (171) and the second sealing portion (172) may each reduce vibrations generated by the operation of the motor (110).

[0162] The first sealing portion (171) and the second sealing portion (172) may be spaced apart from each other. The first sealing portion (171) and the second sealing portion (172) may be spaced apart from each other in the vertical direction (Z). For example, the second sealing portion (172) may be positioned lower than the first sealing portion (171). The area where the first sealing portion (171) and the main body case (11) come into contact and the area where the second sealing portion (172) and the main body case (11) come into contact may be spaced apart from each other. In the area between the area where the first sealing portion (171) and the main body case (11) come into contact and the area where the second sealing portion (172) and the main body case (11) come into contact, the seal (170) and the inner wall of the main body case (11) may not come into contact with each other.

[0163] The first outlet (11b) can be positioned between a part of the main body case (11) that is in contact with the first sealing portion (171) and another part that is in contact with the second sealing portion (172). As a result, air flowing along the first flow path (F1) to the first outlet (11b) can be effectively prevented from escaping from the first flow path (F1).

[0164] According to one embodiment, as illustrated in FIG. 7, the first sealing portion (171) and the second sealing portion (172) may be connected to each other. The seal (170) may include a connecting portion (173) provided between the first sealing portion (171) and the second sealing portion (172). The connecting portion (173) may connect the first sealing portion (171) and the second sealing portion (172).

[0165] For example, the connecting portion (173) may be spaced apart from the inner wall of the main body case (11). The connecting portion (173) may have a shape that is sunken inwardly of the suction device (100) with respect to the first sealing portion (171) and the second sealing portion (172) so as not to come into contact with the inner wall of the main body case (11).

[0166] The seal (170) may include a seal hole (173a) provided to allow the first flow path (F1) to pass through. The seal hole (173a) may be arranged between the first sealing portion (171) and the second sealing portion (172). For example, the seal hole (173a) may be provided in the connecting portion (173). For example, the seal hole (173a) may be provided to allow the first flow path (F1) to pass through the connecting portion (173). For example, the seal hole (173a) may be connected to the air guide (151c). For example, the seal hole (173a) may be arranged to face the first outlet (11b). When the suction fan (130) rotates, air flowing along the first flow path (F1) can pass through the seal hole (173a) and be discharged through the first outlet (11b).

[0167] For example, a plurality of seal holes (173a) may be provided. The plurality of seal holes (173a) may be arranged spaced apart from each other. However, the number of seal holes (173a) is not limited to that illustrated in FIGS. 3 to 7.

[0168] For example, in order to allow air to flow smoothly along the first flow path (F1) when the suction fan (130) rotates, the distance (d1) between the first sealing portion (171) and the second sealing portion (172) may be greater than or equal to the width (d2) of the air guide (151c). The size of the seal hole (173a) may be greater than or equal to the width (d2) of the air guide (151c).

[0169] For example, the first sealing portion (171), the second sealing portion (172), and the connecting portion (173) connecting them may be formed integrally with each other. As the seal (170) is formed integrally, the productivity of the suction device (100) may be improved.

[0170] FIG. 8 is a cross-sectional view illustrating a main body case of a vacuum cleaner according to one embodiment of the present disclosure and a suction device including a seal in which a first sealing portion and a second sealing portion are separated from each other. FIG. 9 is a drawing illustrating an example of a seal included in a suction device of a vacuum cleaner according to one embodiment of the present disclosure, in which a first sealing portion and a second sealing portion are separated from each other.

[0171] When describing the configurations of a vacuum cleaner according to an embodiment of the present disclosure with reference to FIGS. 8 and 9, the same reference numerals may be assigned to the same configurations as those of the embodiments according to FIGS. 1 to 7, and the description thereof may not be repeated.

[0172] Referring to FIGS. 8 and 9, a suction device (100) of a cleaner (1) according to one embodiment of the present disclosure may include a seal (270) provided to partition a first flow path (F1) and a second flow path (F2) together with a partition guide (160).

[0173] The seal (270) may include a first sealing portion (271) extending from the partition guide (160) to the inner wall of the main body case (11). The first sealing portion (271) may extend from the second end (162) of the partition guide (160) to the inner wall of the main body case (11). The first sealing portion (271) may contact the partition guide (160) and the inner wall of the main body case (11), respectively.

[0174] The first sealing portion (271) may be arranged between the first flow path (F1) and the second flow path (F2). The first sealing portion (271) may be arranged between both the second inlet (11c) and the second outlet (11d), and the first outlet (11b). For example, the first sealing portion (271) may be arranged above the first outlet (11b), and below the second inlet (11c) and the second outlet (11d). The first sealing portion (271) may partition the first flow path (F1) and the second flow path (F2).

[0175] The first sealing portion (271) may be provided along the outer perimeter of the partition guide (160). For example, the first sealing portion (271) may be provided along the second end (162) of the partition guide (160). For example, the first sealing portion (271) may have a roughly circular shape provided along the second end (162) of the partition guide (160).

[0176] The first sealing portion (271) can be coupled to the partition guide (160). For example, the first sealing portion (271) can be coupled to the second end (162) of the partition guide (160). For example, the first sealing portion (271) can be fitted to the partition guide (160).

[0177] The seal (270) may include a second sealing portion (272) extending from the first housing (151) to the inner wall of the main body case (11). The second sealing portion (272) may contact the inner walls of the first housing (151) and the main body case (11), respectively. For example, the second sealing portion (272) may extend from the outer circumferential surface (151e) of the first housing (151) to the inner wall of the main body case (11).

[0178] The second sealing portion (272) may be provided to partition the space between the motor housing (150) and the inner wall of the main body case (11) from the first flow path (F1). The second sealing portion (272) may be provided to partition the space between the outer surface (151e) of the first housing (151) and the inner wall of the main body case (11) from the first flow path (F1). More specifically, the second sealing portion (272) may be provided to partition the space between at least the lower portion of the outer surface (151e) of the first housing (151) and the inner wall of the main body case (11) from the first flow path (F1). For example, the second sealing portion (272) may be arranged between the space between the outer surface (151e) of the first housing (151) and the inner wall of the main body case (11) and the first flow path (F1). More specifically, the second sealing portion (272) may be arranged between the space between at least the lower portion of the outer surface (151e) of the first housing (151) and the inner wall of the main body case (11) and the first flow path (F1). For example, the second sealing portion (272) may be arranged on the lower side of the first outlet (11b). Accordingly, the second sealing portion (272) may prevent air moving along the first flow path (F1) from being discharged to the first outlet (11b) and moving downward.

[0179] The second sealing portion (272) may be provided along the outer circumference of the motor housing (150). For example, the second sealing portion (272) may be provided along the outer circumference (151e) of the first housing (151). For example, the second sealing portion (272) may have a roughly circular shape provided along the circumference of the first housing (151).

[0180] The second sealing portion (272) can be coupled to the first housing (151). For example, the second sealing portion (272) can be coupled to a seal coupling portion (151f) provided on the outer circumferential surface (151e) of the first housing (151). For example, the second sealing portion (272) can be fitted to the seal coupling portion (151f).

[0181] The first sealing portion (271) and the second sealing portion (272) may be spaced apart from each other. The first sealing portion (271) and the second sealing portion (272) may be spaced apart from each other in the vertical direction (Z). For example, the second sealing portion (272) may be positioned lower than the first sealing portion (271). The area where the first sealing portion (271) and the main body case (11) come into contact and the area where the second sealing portion (272) and the main body case (11) come into contact may be spaced apart from each other. In the area between the area where the first sealing portion (271) and the main body case (11) come into contact and the area where the second sealing portion (272) and the main body case (11) come into contact, the seal (270) and the inner wall of the main body case (11) may not come into contact with each other.

[0182] The first outlet (11b) can be placed between a part of the main body case (11) that is in contact with the first sealing portion (271) and another part that is in contact with the second sealing portion (272).

[0183] According to one embodiment, as illustrated in FIGS. 8 and 9, the first sealing portion (271) and the second sealing portion (272) may be separated from each other. That is, the first sealing portion (271) and the second sealing portion (272) may not be connected to each other. The first flow path (F1) may pass through the separation space between the first sealing portion (271) and the second sealing portion (272). When the suction fan (130) rotates, the air flowing along the first flow path (F1) may pass through the separation space between the first sealing portion (271) and the second sealing portion (272) and be discharged to the first outlet (11b).

[0184] FIG. 10 is an enlarged cross-sectional view of a part of a main body case of a vacuum cleaner and a suction device accommodated within the main body case according to one embodiment of the present disclosure.

[0185] When describing the configurations of a vacuum cleaner according to an embodiment of the present disclosure with reference to FIG. 10, the same configurations as those of the embodiments according to FIGS. 1 to 9 may be given the same reference numerals, and the description thereof may not be repeated.

[0186] Referring to FIG. 10, a suction device (100) of a cleaner (1) according to one embodiment of the present disclosure may include a second flow path partition (360) provided to partition a portion of a second flow path (F2). The second flow path partition (360) may be provided to partition an upstream portion connected to a second inlet (11c) of the second flow path (F2) and a downstream portion connected to a second outlet (11d) of the second flow path (F2). The second flow path partition (360) may partition an air space in an area adjacent to the second inlet (11c) and the second outlet (11d) so that air flowing in through the second inlet (11c) and air moving toward the second outlet (11d) do not mix with each other.

[0187] The second euro partition (360) may be provided on the inside of the main body case (11). For example, the second euro partition (360) may be positioned between the cooling fan shroud (141) and the main body case (11). For example, the second euro partition (360) may extend from the cooling fan shroud (141) toward the inner wall of the main body case (11). For example, the second euro partition (360) may extend in a substantially horizontal direction from the cooling fan shroud (141).

[0188] The second euro partition (360) may be provided along the perimeter of the cooling fan shroud (141). For example, the second euro partition (360) may have a roughly annular shape provided along the perimeter of the cooling fan shroud (141).

[0189] For example, the second euro partition (360) may be formed integrally with the cooling fan shroud (141).

[0190] The suction device (100) may include a second euro seal (370) configured to partition a portion of the second euro (F2) together with the second euro partition (360). The second euro seal (370) may be arranged on the inside of the main body case (11). The second euro seal (370) may be in contact with the inner wall of the main body case (11).

[0191] The second euro seal (370) can be in contact with a portion of the main body case (11) between the second inlet (11c) and the second outlet (11d). That is, the portion where the second euro seal (370) is in contact with the main body case (11) can be located between the second inlet (11c) and the second outlet (11d). For example, as illustrated in FIG. 10, the second euro seal (370) can be in contact with the lower side of the second inlet (11c) and the upper side of the second outlet (11d).

[0192] The second euro seal (370) may be provided to seal the gap between the second euro partition (360) and the main body case (11). The second euro seal (370) may extend from the second euro partition (360) toward the inner wall of the main body case (11).

[0193] A second euro seal (370) may be provided along the outer perimeter of the second euro partition (360). The second euro seal (370) may be positioned between the outer perimeter of the second euro partition (360) and the inner wall of the main body case (11). For example, the second euro seal (370) may have a roughly annular shape formed along the perimeter of the second euro partition (360).

[0194] The second euro seal (370) can be coupled to the second euro partition (360). For example, the second euro seal (370) can be coupled to one end adjacent to the inner wall of the main body case (11) of the second euro partition (360). For example, the second euro seal (370) can be fitted to the second euro partition (360).

[0195] The second euro seal (370) may be provided to be elastically deformable. The second euro seal (370) may include an elastic material. For example, the second euro seal (370) may include various materials such as rubber, polytetrafluoroethylene (PTFE) (Teflon), and silicone.

[0196] Unlike as illustrated in FIG. 10, according to various embodiments, the second euro partition (360) and the second euro seal (370) may be configured to be included in the main body case (11). For example, the second euro partition (360) may protrude from the inner wall of the main body case (11) and extend toward the cooling fan shroud (141). The second euro seal (370) may be positioned between the cooling fan shroud (141) and the second euro seal (370).

[0197] FIG. 11 is a cross-sectional view illustrating a main body case of a vacuum cleaner and a suction device accommodated within the main body case according to one embodiment of the present disclosure.

[0198] When describing the configurations of a vacuum cleaner according to an embodiment of the present disclosure with reference to FIG. 11, the same configurations as those of the embodiments according to FIGS. 1 to 10 may be given the same reference numerals, and the description thereof may not be repeated.

[0199] Referring to FIG. 11, a main body case (11) of a cleaner (1) according to one embodiment of the present disclosure may include a second inlet (11c) formed on one side of the main body case (11) and configured to allow cool air to flow in when a cooling fan (140) rotates, and a second outlet (11d) formed on the other side of the main body case (11) and configured to allow cool air to flow out when the cooling fan (140) rotates.

[0200] For example, the second inlet (11c) and the second outlet (11d) may be arranged on opposite sides of the main body case (11). For example, the second inlet (11c) and the second outlet (11d) may be arranged on opposite sides of the case body (12). When the cooling fan (140) rotates, air outside the cleaner (1) may be introduced into one side of the main body case (11) through the second inlet (11c), and the introduced air may flow through the cooling fan shroud (141), the cooling fan (140), the motor (110), etc. along the second flow path (F2) to the opposite side of the main body case (11), and then be discharged back to the outside of the cleaner (1) through the second outlet (11d).

[0201] For example, the second inlet (11c) and the second outlet (11d) can be arranged parallel to each other in a roughly horizontal direction.

[0202] FIG. 12 is a cross-sectional view illustrating a main body case of a vacuum cleaner and a suction device accommodated within the main body case according to one embodiment of the present disclosure.

[0203] When describing the configurations of a vacuum cleaner according to an embodiment of the present disclosure with reference to FIG. 12, the same reference numerals may be assigned to the same configurations as those of the embodiments according to FIGS. 1 to 11, and the description thereof may not be repeated.

[0204] Referring to FIG. 12, the suction device (100) of the cleaner (1) according to one embodiment of the present disclosure may include a cooling fan (440) for cooling the motor (110) and / or the motor driver (120). The cooling fan (440) may be connected to the motor (110) and may be provided to be rotatably connected. The cooling fan (440) may be connected to a rotating shaft (113) and may be provided to be rotatably connected.

[0205] The cooling fan (440) may be arranged so that air is drawn into the main body case (11) through the second inlet (11c) and air is discharged from the main body case (11) through the second outlet (11d) as it rotates. The cooling fan (440) may be arranged so that air flows from the second inlet (11c) toward the second outlet (11d) along the second flow path (F2) as it rotates. The second flow path (F2) may pass through the motor (110). The second flow path (F2) may pass through the cooling fan (440).

[0206] The cooling fan (440) may be positioned downstream of the second flow path (F2) from the motor (110). The cooling fan (440) may be positioned between the motor (110) and the suction fan (130). The cooling fan (440) may be positioned below the motor (110). As a result, the cooling fan (440) may efficiently cool the motor (110) from top to bottom.

[0207] The cooling fan (440) may be placed inside the motor housing (150). The cooling fan (440) may be surrounded by the motor housing (150). The cooling fan (440) may be surrounded by the first housing (151). The cooling fan (440) may be surrounded by the motor cover (151a). The motor cover (151a) may surround the cooling fan (440) in a horizontal direction.

[0208] The suction device (100) may further include a cooling fan shroud (441) covering the cooling fan (440). The cooling fan shroud (441) may cover the cooling fan (440). The cooling fan shroud (441) may surround an outer periphery of the cooling fan (440). The cooling fan shroud (441) may surround the cooling fan (440) in a horizontal direction. The cooling fan shroud (441) may be configured to guide the flow of air as the cooling fan (440) rotates. The second flow path (F2) may pass through the cooling fan shroud (441).

[0209] The inner surface of the cooling fan shroud (441) and the cooling fan (440) can be spaced apart from each other.

[0210] The cooling fan shroud (441) may be positioned downstream of the second flow path (F2) from the motor (110). The cooling fan shroud (441) may be positioned between the motor (110) and the suction fan (130). The cooling fan shroud (441) may be positioned below the motor (110).

[0211] The cooling fan shroud (441) may be disposed inside the motor housing (150). The cooling fan shroud (441) may be surrounded by the motor housing (150). The cooling fan shroud (441) may be surrounded by the first housing (151). The cooling fan shroud (441) may be disposed inside the motor cover portion (151a). The cooling fan shroud (441) may be surrounded by the motor cover portion (151a). The motor cover portion (151a) may surround the cooling fan shroud (441) in a horizontal direction.

[0212] For example, the cooling fan shroud (441) may extend downward from the inside of the first housing (151).

[0213] For example, the cooling fan shroud (441) may be coupled to the motor housing (150). For example, the cooling fan shroud (441) may be coupled to the first housing (151). Or, for example, the cooling fan shroud (441) may be formed integrally with the first housing (151). Or, for example, the cooling fan shroud (441) may be coupled to the stator (111).

[0214] FIG. 13 is a graph showing the temperature of a motor over time for a vacuum cleaner according to various embodiments of the present disclosure, when the suction device includes a cooling fan and when the suction device does not include a cooling fan.

[0215] In Fig. 13, the horizontal axis indicates the operating time (t) of the motor (110), and the vertical axis indicates the temperature (Tm) of the motor (110). For example, the temperature of the motor (110) may be the temperature of a coil wound on a stator (111).

[0216] The value Tc displayed on the vertical axis in Fig. 13 indicates the allowable temperature of the motor (110), and it is preferable that the motor (110) be heated to a temperature lower than the allowable temperature (Tc) during operation.

[0217] In Fig. 13, P1 indicates a first output value of the motor (110), P2 indicates a second output value of the motor (110), and P3 indicates a third output value. The second output value (P2) may be greater than the first output value (P1), and the third output value (P3) may be greater than the second output value (P2).

[0218] In FIG. 13, the first graph (G1) is a graph showing the temperature (Tm) of the motor (110) over time (t) in an embodiment in which the suction device (100) does not include a cooling fan for cooling the motor (110) and / or the motor driver (120).

[0219] In FIG. 13, the second graph (G2) is a graph showing the temperature (Tm) of the motor (110) over time (t) in an embodiment in which the suction device (100) has a cooling fan (140) (or cooling fan (440)) for cooling the motor (110) and / or the motor driver (120) and a structure for dividing the cooling path and the suction path, as in various embodiments of the present disclosure described with reference to FIGS. 1 to 12.

[0220] Comparing the first graph (G1) and the second graph (G2) of FIG. 13, it can be seen that the motor (110) can be cooled more efficiently when the suction device (100) includes a cooling fan (140) (or a cooling fan (440)). In addition, referring to the first graph (G1), the temperature (Tm) of the motor (110) exceeds the allowable temperature (Tc) at the third output value (P3), whereas referring to the second graph (G2), the temperature (Tm) of the motor (110) is less than the allowable temperature (Tc) at the third output value (P3), thereby showing that the motor (110) can output higher energy when the suction device (100) includes a cooling fan (140) (or a cooling fan (440)). That is, it can be seen that the output range of the motor (110) increases when the suction device (100) includes a cooling fan (140) (or cooling fan (440)).

[0221] In the above, the vacuum cleaner (1) according to various embodiments has been described as an example of a stick-type vacuum cleaner, but the present disclosure is not limited thereto. According to various embodiments of the present disclosure, the above-described configurations of the vacuum cleaner can be applied to various types of vacuum cleaners, such as a canister-type vacuum cleaner, an upright-type vacuum cleaner, a handy-type vacuum cleaner, and a robot vacuum cleaner.

[0222] According to one embodiment of the present disclosure, a vacuum cleaner may include a main body case including a first inlet, a first outlet, a second inlet, and a second outlet, a motor disposed within the main body case, a suction fan disposed within the main body case and rotatably connected to the motor, a cooling fan disposed within the main body case and rotatably connected to the motor, a motor housing disposed within the main body case, supporting the motor, and including a partition guide, and a seal coupled to the partition guide and in contact with an inner wall of the main body case. The partition guide and the seal may be arranged to define a first flow path extending from the first inlet through the suction fan to the first outlet, and a second flow path extending from the second inlet through the cooling fan and the motor to the second outlet.

[0223] The above seal may be placed along the outer perimeter of the above partition guide.

[0224] The above motor housing may further include a motor cover portion surrounding the motor. The partition guide may extend from the motor cover portion.

[0225] The above partition guide can extend from the motor cover portion to come close to the inner wall of the main body case.

[0226] The above seal can be coupled to one end of the partition guide opposite to the motor cover portion in a direction extending from the motor cover portion.

[0227] The motor housing may further include an air guide through which the first flow path passes. The partition guide may extend from one side of the air guide in a direction in which air flowing along the first flow path is discharged when the suction fan rotates.

[0228] The motor housing may further include a first housing surrounding the motor and through which the first passage passes. The seal may include a first sealing portion extending from the partition guide to the inner wall of the main body case, and a second sealing portion extending from the first housing to the inner wall of the main body case.

[0229] The second sealing portion may be provided to partition the space between the outer surface of the first housing and the inner wall of the main body case from the first flow path.

[0230] The above first outlet may be positioned between a part of the main body case that is in contact with the first sealing portion and another part that is in contact with the second sealing portion.

[0231] The first sealing portion and the second sealing portion may be connected to each other. The seal may further include a seal hole arranged between the first sealing portion and the second sealing portion and provided to allow the first flow path to pass therethrough.

[0232] The first outlet and the second outlet may be spaced apart from each other.

[0233] The above motor housing may further include a motor cover portion surrounding the motor. The first flow path may be arranged on the outside of the motor cover portion, and at least a portion of the second flow path may be arranged on the inside of the motor cover portion.

[0234] The second euro may include a first portion passing through the motor and the cooling fan, and a second portion passing between the motor and the motor cover.

[0235] The above vacuum cleaner may further include a motor driver electrically connected to the motor. The cooling fan may be disposed between the motor and the motor driver.

[0236] The above vacuum cleaner may further include a suction port configured to suck in air and foreign substances, and a dust collecting device connected to the suction port and configured to collect foreign substances in the air sucked in from the suction port. The first inlet may be configured to allow air passing through the dust collecting device to flow in.

[0237] A vacuum cleaner according to one embodiment of the present disclosure may include a suction port configured to suck in air and foreign substances, a dust collecting device connected to the suction port and configured to collect foreign substances in the air sucked in from the suction port, a suction device configured to suck in air and foreign substances through the suction port, and a main body case including a first inlet, a first outlet, a second inlet, and a second outlet, and accommodating the suction device. The above suction device may include a motor, a suction fan connected to the motor and rotatably provided, the suction fan being configured to rotate so as to cause air, which has passed through the dust collector and entered the main body case through the first inlet, to flow toward the first outlet by rotating the suction fan, a cooling fan connected to the motor and rotatably provided, the cooling fan being configured to rotate so as to cause air, which has passed through the second inlet, to flow toward the second outlet by rotating the cooling fan, the partition guide being configured to divide a first flow path extending from the first inlet to the first outlet and a second flow path extending from the second inlet to the second outlet within the main body case, and a seal disposed between an outer circumference of the partition guide and an inner wall of the main body case.

[0238] The above suction device may further include a motor housing supporting the motor. The motor housing may further include an air guide through which the first flow path passes. The partition guide may extend from one side of the air guide toward the inner wall of the main body case, and may be provided to guide air flowing along the first flow path toward the first outlet when the suction fan rotates.

[0239] The above suction device may include a suction fan shroud covering the suction fan, a cooling fan shroud covering the cooling fan, and a motor housing supporting the motor. The motor housing may include an air guide connected to the suction fan shroud, and a motor cover portion provided on the inside of the air guide, surrounding the motor, and connected to the cooling fan shroud. The partition guide may extend from the motor cover portion toward the inner wall of the main body case.

[0240] The cooling fan may be arranged to draw air from outside the cleaner into the main body case through the second inlet when rotating, and to discharge the air to the outside of the cleaner through the second outlet.

[0241] A suction device according to one embodiment of the present disclosure may include a motor, a suction fan rotatably connected to the motor, a cooling fan rotatably connected to the motor, a suction fan shroud covering the suction fan, a cooling fan shroud covering the cooling fan, a motor housing disposed between the suction fan shroud and the cooling fan shroud and covering the motor, the motor housing including a partition guide disposed between a suction channel connected to the suction fan shroud and a cooling channel connected to the cooling fan shroud and passing through the motor, and a seal disposed along an outer periphery of the partition guide.

[0242] According to the invention, the suction device of the vacuum cleaner includes a cooling fan, thereby generating a flow of air passing through the motor and / or the motor driver, thereby efficiently cooling the motor and / or the motor driver and increasing the output range of the motor.

[0243] According to the invention, a suction device of a vacuum cleaner can include a partition guide and a seal to prevent or reduce moisture-containing suction air from flowing into a space where a motor and / or a motor driver are located.

[0244] According to the idea of ​​the present disclosure, the suction device of the vacuum cleaner can separate the flow path for sucking and filtering foreign substances such as dust, including a partition guide and seal, and the flow path for cooling the motor and / or motor driver.

[0245] The effects according to the idea of ​​the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0246] The above illustrates and describes specific embodiments. However, the invention is not limited to the above-described embodiments, and those skilled in the art will readily appreciate that various modifications and implementations can be made without departing from the spirit and scope of the invention as set forth in the claims below.

Claims

1. A main body case including a first inlet, a first outlet, a second inlet, and a second outlet; A motor placed within the above main body case; A suction fan arranged within the main body case and configured to be rotatable by the motor so that air flows along a first path extending from the first inlet to the first outlet; A cooling fan arranged within the main body case and configured to be rotatable by the motor so that air flows along a second path extending from the second inlet to the second outlet; A motor housing supporting the above motor and including a partition guide; and A vacuum cleaner comprising a seal coupled to the partition guide and in contact with the inner wall of the main body case, and dividing the first euro and the second euro together with the partition guide.

2. In paragraph 1, The above seal is a cleaner arranged along the outer perimeter of the above partition guide.

3. In paragraph 1, The above motor housing, Further comprising a motor cover portion surrounding the above motor; The above partition guide is a vacuum cleaner extending from the above motor cover part.

4. In paragraph 3, The above partition guide is a vacuum cleaner that extends from the motor cover portion toward the inner wall of the main body case.

5. In paragraph 3, A cleaner in which the seal is coupled to one end of the partition guide opposite the motor cover portion in a direction extending from the motor cover portion.

6. In paragraph 1, The above motor housing, further comprising an air guide through which the first euro passes; The above partition guide is, A vacuum cleaner extending from one side of the air guide in the direction in which air flows along the first duct when the suction fan rotates.

7. In paragraph 1, The above motor housing, Further comprising a first housing surrounding the motor and through which the first euro passes; A vacuum cleaner in which the seal includes a first sealing portion extending from the partition guide to the inner wall of the main body case, and a second sealing portion extending from the first housing to the inner wall of the main body case.

8. In paragraph 7, The above second sealing portion, A cleaner that divides the space between the outer surface of the first housing and the inner wall of the main body case from the first flow path.

9. In paragraph 7, The above first outlet is, A vacuum cleaner disposed between a part of the main body case where the first sealing part is in contact and another part where the second sealing part is in contact.

10. In paragraph 7, The first sealing portion and the second sealing portion are connected to each other, A cleaner wherein the seal further includes a seal hole arranged between the first sealing portion and the second sealing portion to allow the first euro to pass therethrough.

11. In paragraph 1, A cleaner wherein the first outlet and the second outlet are spaced apart from each other.

12. In paragraph 1, The above motor housing further includes a motor cover portion surrounding the motor; A cleaner wherein the first euro is disposed on the outside of the motor cover part, and at least a portion of the second euro is disposed on the inside of the motor cover part.

13. In paragraph 12, The above second euro is, A first part passing through the above motor and the above cooling fan, A vacuum cleaner comprising a second part passing between the motor and the motor cover.

14. In paragraph 1, Further comprising a motor driver electrically connected to the above motor; A vacuum cleaner wherein the cooling fan is positioned between the motor and the motor driver.

15. In paragraph 1, an intake configured to suck in air and foreign substances; and A vacuum cleaner further comprising a dust collecting device configured to collect foreign substances in the air sucked in from the suction port and allow the air sucked in from the suction port to pass therethrough and flow into the first inlet.

Images