Motor assembly, dust collection device, and cleaner

Abstract

A motor assembly according to an exemplary embodiment comprises: a control board; a fan motor; an impeller configured to be rotated by the fan motor; a first guide that covers the impeller and guides the flow path of air suctioned in the axial direction of the impeller, thereby enabling the air to flow toward the control board; and a second guide that is disposed between the first guide and the control board covers the fan motor, and guides the flow path of the air. The second guide may be spaced apart from the control board and include a nozzle part, having a gradient of a certain angle with respect to the axial direction, at the end facing the control board.

Description

Motor assembly, dust collector and vacuum cleaner

[0001] Exemplary embodiments relate to a motor assembly, a dust collector and a vacuum cleaner.

[0002] A vacuum cleaner, for example, can use negative pressure to suck in air containing foreign substances such as dust.

[0003] The vacuum cleaner may include a dust collection device that separates foreign substances from the sucked air and stores them in a dust collection unit.

[0004] A dust collection device may include a motor assembly configured to generate suction power for the vacuum cleaner. The motor assembly may be configured to cause the vacuum cleaner to draw in and expel air containing foreign substances. Meanwhile, as the vacuum cleaner becomes smaller, the motor's rotation speed may increase to prevent a decrease in suction power. Generally, as the motor's rotation speed increases, excessive heat may be generated in the control board that supplies power to the motor. Generally, as the motor's rotation speed increases, noise generated from the motor assembly may increase. Generally, as the motor's rotation speed increases, vibration generated from the motor assembly may increase.

[0005] In an exemplary embodiment, the motor assembly may be a motor assembly configured to generate suction force in the vacuum cleaner.

[0006] In an exemplary embodiment, the motor assembly may include a control board and a fan motor.

[0007] In an exemplary embodiment, the motor assembly may include an impeller configured to be rotated by the fan motor.

[0008] In an exemplary embodiment, the motor assembly may include a first guide that covers the impeller and guides the air flow path such that air sucked in the axial direction of the impeller can be directed to the control board.

[0009] In an exemplary embodiment, the motor assembly may include a second guide disposed between the first guide and the control board to cover the fan motor and guide the airflow path.

[0010] In an exemplary embodiment, the second guide of the motor assembly may be positioned spaced apart from the control board.

[0011] In an exemplary embodiment, the second guide of the motor assembly may include a nozzle portion having a predetermined angle of inclination with respect to the axial direction at an end opposite to the control board.

[0012] In an exemplary embodiment, the dust collection device may be configured to generate suction force for the vacuum cleaner and temporarily store foreign substances sucked by the vacuum cleaner.

[0013] In an exemplary embodiment, the dust collector may include a motor unit.

[0014] In an exemplary embodiment, the motor section of the dust collector may include a motor assembly.

[0015] In an exemplary embodiment, the dust collection device may include a dust collection unit configured to temporarily contain foreign matter by separating it from air sucked by the vacuum cleaner.

[0016] A vacuum cleaner according to an exemplary embodiment may include a suction device configured to suck up foreign matter.

[0017] A vacuum cleaner according to an exemplary embodiment may include a vacuum cleaner body including a dust collecting device and storing foreign substances sucked in through a suction device.

[0018] A cleaner according to an exemplary embodiment may include a transfer unit arranged between a suction device and a cleaner body and configured to transfer foreign substances sucked from the suction device to the cleaner body.

[0019] Figure 1 is a perspective view of a vacuum cleaner according to an exemplary embodiment.

[0020] Fig. 2 is a perspective view of a vacuum cleaner body according to an exemplary embodiment.

[0021] Figure 3 is an exploded perspective view of a vacuum cleaner body according to an exemplary embodiment.

[0022] Figure 4 is a perspective view of a dust collector with an open discharge cap according to an exemplary embodiment.

[0023] Fig. 5 is a perspective view showing the connection between the dust collecting unit and the motor unit of the dust collecting device according to an exemplary embodiment.

[0024] Fig. 6 is a perspective view of a motor unit according to an exemplary embodiment.

[0025] Fig. 7 is an exploded perspective view showing the housing separated from the motor unit according to an exemplary embodiment.

[0026] FIG. 8 is an exploded perspective view showing the filter further separated from the motor assembly of FIG. 7 according to an exemplary embodiment.

[0027] Fig. 9 is an exploded perspective view showing the filter support part further separated from the motor assembly (30) of Fig. 8.

[0028] Fig. 10 is an exploded perspective view showing the support frame further separated from the motor assembly of Fig. 9.

[0029] Fig. 11 is an exploded perspective view showing the separation of a filter assembly according to an exemplary embodiment.

[0030] Fig. 12 is a perspective view of a motor assembly according to an exemplary embodiment from another angle.

[0031] FIG. 13 is an exploded perspective view showing the guide cover separated from the motor assembly of FIG. 11 according to an exemplary embodiment.

[0032] Fig. 14 is a cross-sectional perspective view of the motor assembly of Fig. 12.

[0033] FIG. 15 is an exploded perspective view of the motor assembly of FIG. 12, with the first guide and the second guide separated and viewed from different directions, according to an exemplary embodiment.

[0034] Fig. 16 is a perspective view illustrating the operation of the clip portion of the second guide according to an exemplary embodiment.

[0035] Fig. 17 is a partial cross-sectional view of a second guide according to an exemplary embodiment.

[0036] Fig. 18 is a cross-sectional view of the motor section of Fig. 6 according to an exemplary embodiment, viewed in the BB direction.

[0037] Fig. 19 is a cross-sectional view of the motor section of Fig. 6 viewed in the CC direction according to an exemplary embodiment.

[0038] Fig. 20 is a drawing for explaining noise of a motor assembly according to an exemplary embodiment.

[0039] It should be understood that the various embodiments and terms used in this document are not intended to limit the technical features described in this document to specific embodiments, but rather to include various modifications, equivalents, or substitutes of the embodiments.

[0040] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0041] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0042] In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof.

[0043] The term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0044] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0045] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0046] The terms "include" or "have" are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in this document, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0047] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0048] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0049] A vacuum cleaner, for example, can suck in foreign substances such as dust along with the air using the suction force generated by the suction fan, filter out the foreign substances, and store them in a dust collector.

[0050] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the contents described in the attached drawings. The same reference numbers or symbols presented in each drawing indicate parts or components that perform substantially the same functions.

[0051] Fig. 1 is a perspective view of a vacuum cleaner (1) according to an exemplary embodiment.

[0052] Referring to FIG. 1, a cleaner (1) according to an exemplary embodiment may include a cleaner body (10), a suction device (11), and a conveying member (12). The cleaner body (10) may provide suction force to the cleaner (1). The cleaner body (10) may provide suction force to the cleaner (1). The cleaner body (10) may generate suction force to the cleaner (1). The cleaner body (10) may provide suction force to the suction device (11). The cleaner body (10) may generate suction force to the suction device (11). The cleaner body (10) may be connected to the suction device (11) through a conveying member (12). The conveying member (12) may be disposed between the suction device (11) and the cleaner body (10). The conveying member (12) may connect the cleaner (1) and the suction device (11). The transfer unit (12) can transfer the suction force provided by the vacuum cleaner body (10) to the suction device (11).

[0053] A suction device (11) according to an exemplary embodiment may include a first suction unit (110). The suction device (11) may suck air through the first suction unit (110). The suction device (11) may be configured to suck foreign substances through the first suction unit (110). The suction device (11) may transfer air sucked from the first suction unit (110) to the cleaner body (10). The suction device (11) may transfer foreign substances sucked from the first suction unit (110) to the cleaner body (10). The suction device (11) may be placed on a surface on which an object to be cleaned is located. The object to be cleaned may be a floor surface. The suction device (11) may not transfer foreign substances having a predetermined size or larger to the cleaner body (10). However, the arrangement and function of the suction device (11) are not limited to the above description.

[0054] The transfer unit (12) according to an exemplary embodiment can transfer the air sucked by the suction device (11) to the cleaner body (10). The transfer unit (12) can transfer foreign substances sucked from the suction device (11) to the cleaner body (10). The transfer unit (12) can extend in a direction parallel to the x-axis. The transfer unit (12) can extend in a first direction. The transfer unit (12) can be extended long. The length by which the transfer unit (12) extends can be a length at which the suction device (11) can be positioned on the surface where the object to be cleaned is located when a user holds the cleaner body (10) in an upright state. The cleaner (1) can be a stick-type cleaner (1). The user can clean the surface of the object to be cleaned in an upright state using the cleaner (1). However, the functions of the transfer unit (12) and the cleaner (1) are not limited to the above description. In addition, the shape and essential components of the transfer unit (12) are not limited to the above description. For example, the vacuum cleaner (1) according to the exemplary embodiment may not include a transport unit (12).

[0055] Fig. 2 is a perspective view of a vacuum cleaner body (10) according to an exemplary embodiment.

[0056] Referring to FIGS. 1 and 2, a cleaner body (10) according to an exemplary embodiment may include a connecting portion (13). The connecting portion (13) may be connected to a conveying portion (12). The connecting portion (13) may provide suction force to a suction device (11). The connecting portion (13) may generate suction force in the suction device (11). The connecting portion (13) may include a second suction portion (130). The second suction portion (130) may suck in air. The second suction portion (130) may be connected to the first suction portion (110). The second suction portion (130) may suck in foreign substances. The second suction portion (130) may transfer the foreign substances to a dust collecting device (20). However, the function and role of the configuration of the connecting portion (13) are not limited to the above description.

[0057] Fig. 3 is an exploded perspective view of a vacuum cleaner body (10) according to an exemplary embodiment.

[0058] Referring to FIGS. 1 to 3, a cleaner body (10) according to an exemplary embodiment may include a dust collecting device (20). The dust collecting device (20) may suck in air. The dust collecting device (20) may suck in foreign substances. The dust collecting device (20) may provide suction force to the cleaner body (10). The dust collecting device (20) may generate suction force to the cleaner body (10). The dust collecting device (20) may provide suction force to the connecting portion (13). The dust collecting device (20) may include a third suction portion (200). The third suction portion (200) may suck in foreign substances. The third suction portion (200) may be connected to the second suction portion (130). The third suction portion (200) may be coupled to the connecting portion (13). The connecting portion (13) can connect the third suction portion (200) and the first suction portion (110). The dust collecting device (20) can include an exhaust portion (3001). The exhaust portion (3001) can discharge air sucked by the dust collecting device (20). The dust collecting device (20) can be configured to suck air through the third suction port and discharge it through the exhaust portion (3001).

[0059] The dust collector (20) according to an exemplary embodiment may be a cyclone-type dust collector (20). The cleaner (1) may be a cyclone-type cleaner (1). However, the types of the dust collector (20) and the cleaner (1) are not limited to those described above.

[0060] A dust collector (20) according to an exemplary embodiment may include a dust collector (21). The dust collector (21) may store foreign substances sucked by the dust collector (20). The dust collector (21) may temporarily store foreign substances. The dust collector (21) may store foreign substances using a cyclone principle. However, the function and principle of the dust collector (21) are not limited to the above description.

[0061] According to an exemplary embodiment, a cleaner body (10) may include an operating unit (14). A user may operate the cleaner body (10) through the operating unit (14). The operating unit (14) may be electrically connected to a dust collecting device (20). The operating unit (14) may include a handle (141). The handle (141) may be a portion through which a user holds the cleaner body (10). However, the function of the operating unit (14) is not limited to the above description.

[0062] The vacuum cleaner body (10) according to an exemplary embodiment may include a battery unit (15). The battery unit (15) may supply power to the operating unit (14). The battery unit (15) may supply power to the dust collector (20) through the operating unit (14). The battery unit (15) may be arranged below the operating unit (14). However, the function and arrangement of the battery unit (15) are not limited to the above description.

[0063] Fig. 4 is a perspective view of a dust collector (20) with an open discharge cap (211) according to an exemplary embodiment.

[0064] Referring to FIG. 4, a dust collector (20) according to an exemplary embodiment may include a storage unit (210). The dust collector (21) may include a storage unit (210) configured to store foreign substances therein. The storage unit (210) may store foreign substances sucked by the dust collector (20). The storage unit (210) may temporarily store foreign substances. Foreign substances sucked by the dust collector (20) may be stored in the storage unit (210) inside the dust collector (21). However, the function of the storage unit (210) is not limited to the above description.

[0065] A dust collector (20) according to an exemplary embodiment may include a discharge cap (211). The dust collector (21) may include the discharge cap (211). The discharge cap (211) may be disposed on one side of the dust collector (21). The dust collector (21) may open the discharge cap (211). The dust collector (21) may expose a storage unit (210) inside the dust collector (21) to the outside by opening the discharge cap (211). A user may discharge foreign substances temporarily stored in the dust collector (21) to the outside by opening the discharge cap (211). However, the function and arrangement of the discharge cap (211) are not limited to the above description.

[0066] Fig. 5 is a perspective view showing the connection between the dust collecting unit (21) and the motor unit (3) of the dust collecting device (20) according to an exemplary embodiment.

[0067] Referring to FIG. 5, a dust collecting device (20) according to an exemplary embodiment may include a motor unit (3). The motor unit (3) may provide suction power to the dust collecting device (20). The motor unit (3) may generate suction power to the dust collecting device (20). The motor unit (3) may provide suction power to the dust collecting device (21). The motor unit (3) may generate suction power to the dust collecting device (21).

[0068] The motor unit (3) according to an exemplary embodiment may include a fourth suction unit (3000). The motor unit (3) may generate suction force through the fourth suction unit (3000). The motor unit (3) may provide suction force through the fourth suction unit (3000). The motor unit (3) may suck in air through the fourth suction unit (3000) and discharge it through the discharge unit (3001).

[0069] According to an exemplary embodiment, the dust collection unit (21) and the motor unit (3) may be connected in the x-axis direction. The dust collection unit (21) and the motor unit (3) may be connected in the first direction. The connection of the dust collection unit (21) and the motor unit (3) may be such that the air flow path formed inside the dust collection unit (21) and the air flow path formed inside the motor unit (3) are connected.

[0070] The dust collection unit (21) according to the exemplary embodiment can be separated through the separation operation unit (22). However, the method by which the motor unit (3) and the dust collection unit (21) are separated is not limited to the above description.

[0071] Referring again to FIGS. 4 and 5, the dust collector (21) according to the exemplary embodiment can separate and store foreign substances inside the air sucked by the third suction unit (200). The dust collector (21) can collect foreign substances inside the air sucked by the third suction unit (200). The dust collector (21) can remove foreign substances inside the air sucked by the third suction unit (200) and transfer the removed foreign substances to the motor unit (3). The motor unit (3) can receive air from which foreign substances have been removed from the dust collector (21). The air sucked by the dust collector (20) can have foreign substances inside removed before it moves from the dust collector (21) to the motor unit (3). The internal foreign substances can be separated from the air sucked by the dust collector (20) before it moves from the dust collector (21) to the motor unit (3). The dust collector (20) can separate foreign substances contained in the air using a cyclone method. The removal of foreign substances within the air may be achieved by temporarily storing the foreign substances in a storage unit (210) included in the dust collector (21). The motor unit (3) may generate suction power so that the dust collector (21) sucks in air and stores the foreign substances. However, the relationship between the motor unit (3) and the dust collector (21) is not limited to the above description.

[0072] Meanwhile, the exemplary sizes of the vacuum cleaner (1) and dust collector (20) and the performance of the motor unit (3) will be described below.

[0073] Referring again to FIGS. 1, 4 and 5, the dust collector (20) according to the exemplary embodiment may be a small dust collector (20). The vacuum cleaner (1) may be a small vacuum cleaner (1). The small vacuum cleaner (1) may be a vacuum cleaner (1) including a small dust collector (20). The small dust collector (20) may be a dust collector (20) having a reduced diameter compared to a conventional one. The small vacuum cleaner (1) may be a vacuum cleaner (1) including a small dust collector (20). The small vacuum cleaner (1) may be a vacuum cleaner (1) including a small conveying unit (12). The small dust collector (20) may be a dust collector (20) having a reduced diameter of a dust collector (21). The small dust collector (20) may be a linear device having a reduced diameter of a motor unit (3). The small transport unit (12) may be a transport unit (12) with a reduced diameter of the transport unit (12). The diameter of the dust collector (20) and the diameter of the motor unit (3) may be the same. The diameter may be a diameter of a cross-section perpendicular to the extension direction. The diameter may be a diameter of a cross-section perpendicular to the x-axis direction. The diameter may be a diameter of a cross-section perpendicular to the first direction. The diameter of the small dust collector (20) may be 80 mm or more and 110 mm or less. The diameter of the small dust collector (20) may be 90 mm or more and 100 mm or less. The diameter of the small dust collector (20) may be approximately 94 mm. However, the sizes of the dust collector (20) and the cleaner (1) are not limited to the above description.

[0074] The motor unit (3) of the dust collector (20) according to an exemplary embodiment may be a high-performance motor unit (3). The high-performance motor unit (3) may provide strong suction power. When the motor unit (3) is a high-performance motor unit (3), the suction power can be prevented from decreasing when the dust collector (20) is a small-sized dust collector (20). When the motor unit (3) is a high-performance motor unit (3), the suction power can be prevented from decreasing when the vacuum cleaner (1) is a small-sized vacuum cleaner (1). However, the performance and role of the motor unit (3) are not limited to the above description.

[0075] Fig. 6 is a perspective view of a motor unit (3) according to an exemplary embodiment.

[0076] Referring to FIG. 6, the motor unit (3) according to the exemplary embodiment may include a first grill (3002) covering the fourth suction unit (3000). The first grill (3002) may protect the fourth suction unit (3000). However, the function of the first grill (3002) is not limited to the above description.

[0077] The motor unit (3) according to an exemplary embodiment may include a second grill (3003) covering the discharge unit (3001). The second grill (3003) may protect the discharge unit (3001). However, the function of the second grill (3003) is not limited to the above description.

[0078] The motor unit (3) according to the exemplary embodiment may be arranged with the axis direction (A) as the center. The axis direction (A) may be a direction parallel to the x-axis. The axis direction (A) may be a direction parallel to the first direction. The axis direction (A) may be a direction in which the motor unit (3) sucks in air. However, the specific direction of the axis direction (A) is not limited to the above description.

[0079] According to an exemplary embodiment, the fourth suction unit (3000) may be arranged in the axial direction (A). The discharge unit (3001) may not be arranged in the axial direction (A). The discharge unit (3001) may be arranged in a radial direction intersecting the axial direction (A). The discharge unit (3001) may be arranged in a second direction intersecting the first direction. The second direction may be a direction parallel to the y-axis. However, the arrangement relationship between the fourth suction unit (3000) and the discharge unit (3001) is not limited to the above description.

[0080] According to an exemplary embodiment, there may be a plurality of discharge units (3001). The plurality of discharge units (3001) may be arranged to face each other in the second direction. However, the number and arrangement of the discharge units (3001) are not limited to the above description.

[0081] Fig. 7 is an exploded perspective view showing the housing (300) separated from the motor unit (3) according to an exemplary embodiment.

[0082] Referring to FIGS. 6 and 7, a motor unit (3) according to an exemplary embodiment may include a housing (300) and a motor assembly (30). The housing (300) may constitute an exterior of the motor unit (3). The housing (300) may cover the motor assembly (30). The housing (300) may constitute an exterior of the motor assembly (30). The housing (300) may support the motor assembly (30). The housing (300) may include a fourth suction unit (3000) and a discharge unit (3001).

[0083] The motor assembly (30) according to an exemplary embodiment can provide suction force to the motor unit (3). The motor assembly (30) can generate suction force to the motor unit (3). The motor assembly (30) can provide suction force to the fourth suction unit (3000). The motor unit (3) can generate suction force to the fourth suction unit (3000).

[0084] The motor assembly (30) according to an exemplary embodiment may include a fifth suction unit (330). The fifth suction unit may be arranged in the axial direction (A). The fifth suction unit (330) may be arranged in the first direction. The motor assembly (30) may generate suction force through the fifth suction unit (330). The motor assembly (30) may provide suction force through the fifth suction unit (330). The motor assembly (30) may discharge the suctioned air in a radial direction intersecting the axial direction (A). The motor assembly (30) may discharge the suctioned air in a second direction intersecting the first direction. However, the direction in which the motor assembly (30) suctions and discharges air is not limited to the above description.

[0085] A motor assembly (30) according to an exemplary embodiment may include a filter (7). The filter (7) may be configured to collect dust from air discharged by the motor assembly (30). The filter (7) may be configured to collect foreign substances discharged through the discharge portion (3001). The filter (7) may cover the motor assembly (30) in the radial direction. The filter (7) may cover the motor assembly (30) from the outside with respect to the axial direction (A). The filter (7) may collect foreign substances contained in the air discharged by the motor assembly (30). The air sucked by the motor assembly (30) may pass through the filter (7) when discharged. Foreign substances contained in the air discharged by the motor assembly (30) may be collected by the filter (7). However, the function of the filter (7) is not limited to the above description.

[0086] An upper housing (301) included in a housing (300) according to an exemplary embodiment may be disposed opposite a fifth suction portion (330). The upper housing (301) may include a fourth suction portion (3000). The fourth suction portion (3000) may be disposed opposite a fifth suction portion (330). The upper housing (301) may cover an upper portion of a motor assembly (30). The upper housing (301) may protect an upper portion of the motor assembly (30). The upper portion of the motor assembly (30) may be a position in a direction in which the fifth suction port is disposed. However, the function and arrangement of the upper housing (301) are not limited to the above description.

[0087] According to an exemplary embodiment, a lower housing (303) included in a housing (300) may be positioned opposite to an upper housing (303). The lower housing (303) may cover the lower portion of the motor assembly (30). However, the function and positioning of the lower housing (303) are not limited to the above description.

[0088] A side housing (302) included in a housing (300) according to an exemplary embodiment can connect the upper housing (301) and the lower housing (302). The side housing (302) can cover the filter (7). The side housing (302) can cover the side of the motor assembly (30). The side housing (302) can cover the motor assembly (30) in the radial direction. However, the function and arrangement of the side housing (302) are not limited to the above description.

[0089] The side housing (302) according to an exemplary embodiment may include an exhaust port (3001). The side housing (302) may cover the motor assembly (30) in the radial direction. The side housing (302) may cover the motor assembly (30) from the outside with respect to the axial direction (A). Air exhausted by the motor assembly (30) may pass through the filter (7) and be exhausted to the exhaust port (3001) of the side housing (302). The air exhausted by the motor assembly (30) may travel along the inner wall of the side housing (302). The air exhausted by the motor assembly (30) may travel toward the exhaust port (3001) along the inner wall of the side housing (302). The side housing (302) may provide an air path so that the air exhausted by the motor assembly (30) may be exhausted to the exhaust port (3001). However, the function and arrangement of the side housing (302) are not limited to the above description.

[0090] FIG. 8 is an exploded perspective view showing the filter (7) further separated from the motor assembly (30) of FIG. 7 according to an exemplary embodiment.

[0091] Referring to FIGS. 7 and 8, a motor assembly (30) according to an exemplary embodiment may include a filter support (8) disposed inside a filter (7). The filter support (8) may support the filter (7) from the inside. The filter support (8) may be disposed to support the filter (7) between the filter (7) and the support frame (6). However, the function and arrangement of the filter support (8) are not limited to the above description.

[0092] Fig. 9 is an exploded perspective view showing the filter support (8) further separated from the motor assembly (30) of Fig. 8.

[0093] Referring to FIG. 9, a motor assembly (30) according to an exemplary embodiment may include a support frame (6). The support frame (6) may cover the motor assembly (30) in the radial direction. The support frame (6) may cover the motor assembly (30) from the outside about the axial direction (A).

[0094] The motor assembly (30) according to the exemplary embodiment can discharge air sucked through the support frame (6). A filter (7) can be placed between the support frame (6) and the housing (300). Air discharged through the support frame (6) can pass through the filter (7) and be discharged to the discharge portion (3001) of the housing (300).

[0095] The support frame (6) according to an exemplary embodiment may include a plurality of exhaust holes (62) arranged along the outer circumference (61). The plurality of exhaust holes (62) may be arranged in the radial direction of the motor assembly (30). The plurality of exhaust holes (62) may be arranged in the lateral direction of the motor assembly (30). However, the arrangement of the exhaust holes (62) is not limited to the above description.

[0096] The exhaust hole (62) according to the exemplary embodiment may provide a path for the air discharged from the motor assembly (30). The exhaust hole (62) may be a passage through which the air discharged from the motor assembly (30) is discharged. The air discharged from the motor assembly (30) may be discharged through the exhaust hole (62). However, the function of the exhaust hole (62) is not limited to the above description.

[0097] Meanwhile, the exemplary performance and noise prevention of the motor assembly (30) will be described below.

[0098] Referring again to FIGS. 7 to 9, the motor assembly (30) of the motor unit (3) according to the exemplary embodiment may be a high-performance motor assembly (30). The high-performance motor assembly (30) may provide strong suction power. If the motor assembly (30) is a high-performance motor assembly (30), noise prevention may be required. However, the performance and noise generation of the motor assembly (30) are not limited to the above description.

[0099] The noise of the motor assembly (30) according to the exemplary embodiment can be transmitted to the outside through a plurality of exhaust holes (62). The noise of the motor assembly (30) can be transmitted to the outside through the air discharged through the plurality of exhaust holes (62).

[0100] According to an exemplary embodiment, a plurality of exhaust holes (62) may be arranged radially. The plurality of exhaust holes (62) may be arranged radially with respect to the axial direction (A). The lengths of the paths through which air discharged from the plurality of exhaust holes (62) is discharged to the exhaust section (3001) may be different from each other.

[0101] According to an exemplary embodiment, among the plurality of discharge holes (62), there may be a discharge hole (62) disposed facing the discharge portion (3001). Among the plurality of discharge holes (62), the discharge hole (62) disposed facing the discharge portion (3001) may be a discharge hole (62) disposed adjacent to the discharge portion (3001). Among the plurality of discharge holes (62), the discharge hole (62) disposed facing the discharge portion (3001) may be a discharge hole (62) disposed to overlap the discharge portion (3001).

[0102] A filter support (8) according to an exemplary embodiment may include a blocking film (81). The blocking film (81) may cover an exhaust hole (62) disposed opposite to the exhaust section (3001) among a plurality of exhaust holes (62) from the outside. The blocking film (81) may block a space between an exhaust hole (62) disposed opposite to the exhaust section (3001) among a plurality of exhaust holes (62) and the exhaust section (3001). The blocking film (81) may prevent air discharged from the exhaust hole (62) disposed opposite to the exhaust section (3001) from being directly discharged to the exhaust section (3001). The blocking film (81) may prevent noise passing through the exhaust hole (62) disposed opposite to the exhaust section (3001) from being directly discharged to the exhaust section (3001).

[0103] The barrier (81) can provide a bypass path for air discharged from the discharge hole (62) disposed opposite the discharge portion (3001). The barrier (81) can provide a bypass path for noise passing through the discharge hole (62) disposed opposite the discharge portion (3001). Air discharged from the discharge hole (62) disposed opposite the discharge portion (3001) can bypass the barrier (81) before being discharged to the discharge portion (3001). Noise passing through the discharge hole (62) disposed opposite the discharge portion (3001) can bypass the barrier (81) before being discharged to the discharge portion (3001).

[0104] The shield (81) can prevent noise generated by the motor assembly (30) from being directly emitted to the exhaust port (3001). If the noise emitted by the motor assembly (30) bypasses the shield (81), the noise can be reduced. The shield (81) can reduce noise generated by the motor assembly (30). However, the arrangement and function of the shield (81) are not limited to the above description.

[0105] According to an exemplary embodiment, a blocking film (81) may be arranged at a predetermined distance from the discharge hole (62). When the blocking film (81) is arranged at a predetermined distance from the discharge hole (62), the blocking film (81) may not block the air flow path discharged from the discharge hole (62). The distance between the blocking film (81) and the discharge hole (62) may be 4 mm or more and 6 mm or less. However, the distance relationship between the blocking film (81) and the discharge hole (62) is not limited to the above description.

[0106] Referring again to FIGS. 8 and 9, a filter support (8) according to an exemplary embodiment can be coupled to a support frame (6). The filter support (8) can be supported by the support frame (6). At least one fifth protrusion (83) can be arranged on one of the filter support (8) and the support frame (6), and at least one fifth groove (63) can be arranged on the other of the filter support (8) and the support frame (6). The filter support (8) can include the fifth protrusion (83). The support frame (6) can include the fifth groove (63). The fifth protrusion (83) of the filter support (8) can be coupled to the fifth groove (63) of the support frame (6). However, the coupling relationship between the filter support (8) and the support frame (6) is not limited to the above description.

[0107] Fig. 10 is an exploded perspective view showing the support frame (6) further separated from the motor assembly (30) of Fig. 9.

[0108] Referring to FIG. 10, a support frame (6) according to an exemplary embodiment can support a motor assembly (30) from the outside. The motor assembly (30) can be fixed to the support frame (6). The support frame (6) can be fixed to a housing (300). The support frame (6) can be fixed to a lower housing (303). However, the function of the support frame (6) is not limited to the above description.

[0109] Fig. 11 is an exploded perspective view showing the separation of a filter assembly (70) according to an exemplary embodiment.

[0110] Referring to FIGS. 7 to 11, a filter assembly (70) can be separated from a motor assembly (30) according to an exemplary embodiment. The filter assembly (70) can include a filter support (8), a filter, and a side frame (302). The filter support (302) can support the filter (7) on the inside of the filter (7). The side frame (302) can cover the filter (7) on the outside of the filter (7). A user can separate or combine the filter assembly (70) from the motor frame (30) as needed. However, the separation and combination of the filter assembly (70) is not limited to the above description.

[0111] Fig. 12 is a perspective view of a motor assembly (30) according to an exemplary embodiment, viewed from a different angle. Fig. 13 is an exploded perspective view of the motor assembly (30) of Fig. 12 according to an exemplary embodiment, with the guide cover (5) removed.

[0112] Referring to FIGS. 12 and 13, a motor assembly (30) according to an exemplary embodiment may include a fan motor (31), an impeller (32), and a fifth suction portion (330).

[0113] The fan motor (31) can supply rotational power to the impeller (32).

[0114] The impeller (32) may be configured to rotate by the fan motor (31). The impeller (32) may be rotated by the fan motor (31) to generate suction force to the motor assembly (30). The impeller (32) may be rotated by the fan motor (31) to generate suction force to the fifth suction unit (330).

[0115] The motor assembly (30) can generate suction force through the fifth suction portion (330). The motor assembly (30) can provide suction force through the fifth suction portion (330). The motor assembly (30) can suck air through the fifth suction portion (330). The motor assembly (30) can suck air in the axial direction (A). The axial direction (A) may be the axial direction (A) of the impeller (32).

[0116] Fig. 14 is a cross-sectional perspective view of the motor assembly (30) of Fig. 12.

[0117] Referring to FIGS. 10, 12, and 14, a motor assembly (30) according to an exemplary embodiment may include a control board (34). The control board (34) may control the operation of the motor assembly (30). The control board (34) may control the operation of the fan motor (31). The control board (34) may supply power to the fan motor (31). The control board (34) may be disposed at a lower portion of the fan motor (31). The lower portion of the fan motor (31) where the control board (34) is disposed may be in the direction toward the fan motor in the axial direction (A) connecting the impeller (32) and the fan motor (34). The fan motor (34) may be disposed between the impeller (32) and the control board (34). However, the arrangement direction of the control board (34) is not limited to the above description.

[0118] The fan motor (31) may be placed on the upper portion of the control board (34). The fan motor (31) may be placed on the control board (34). The control board (34) may be supported by the support frame (6). The control board (34) may be supported by the lower housing (300). The control board (34) may be supported by the filter support (8). However, the function and arrangement of the control board (34) are not limited to the above description.

[0119] A motor assembly (30) according to an exemplary embodiment may include a first guide (33). The first guide (33) may cover the impeller (32). The first guide (33) may protect the impeller (32). The first guide (33) may be arranged on top of the control board (34). The first guide (33) may be arranged on top of the fan motor (31). However, the arrangement of the first guide (33) is not limited to the above description.

[0120] The first guide (33) according to the exemplary embodiment can guide the flow path of air sucked in the axial direction (A) of the impeller (32). The first guide (33) can guide the flow path of air so that the air sucked in the axial direction (A) of the impeller (32) can be directed toward the control board (34). However, the arrangement and function of the first guide (33) are not limited to the above description.

[0121] A motor assembly (30) according to an exemplary embodiment may include a second guide (4). The second guide (4) may cover a fan motor (31). The second guide (4) may protect the fan motor (31). The second guide (4) may guide an air flow path. The second guide (4) may guide an air flow path so that the air can be directed toward the control board (34). The second guide (4) may guide an air flow path so that the air sucked by the motor assembly (30) can reach the control board (34). The second guide (4) may be disposed below the first guide (33). The second guide (4) may be disposed between the first guide (33) and the control board (34). The second guide (4) may be disposed on the control board (34). However, the function and arrangement of the second guide (4) are not limited to the above description.

[0122] The second guide (4) according to the exemplary embodiment may be arranged spaced apart from the first guide (33). When the second guide (4) according to the exemplary embodiment is arranged spaced apart from the first guide (33), the fan motor (31) may be exposed to the outside. However, the arrangement relationship between the first guide (33) and the second guide (4) is not limited to the above description.

[0123] A motor assembly (30) according to an exemplary embodiment may include a guide gap (53) defined by a space between a first guide (33) and a second guide (4). The guide gap (53) may be a space between the first guide (33) and the second guide (4). The fan motor (31) may be exposed to the outside through the guide gap (53). However, the presence or absence of the space between the first guide (33) and the guides and the exposure or absence of the fan motor (31) are not limited to the above description. For example, the space between the first guide (33) and the second guide (4) may not exist. For example, the first guide (33) and the second guide (4) may be one body.

[0124] A motor assembly (30) according to an exemplary embodiment may include a guide cover (5) surrounding a first guide (33). The guide cover (5) may cover the first guide (33). The guide cover (5) may surround an outer surface of the first guide (33). The guide cover (5) may be disposed on the first guide (33). The guide cover (5) may be disposed on the surface of the first guide (33). However, the arrangement of the guide cover (5) is not limited to the above description.

[0125] According to an exemplary embodiment, the guide cover (5) may include a mounting portion (54) at the lower end. The mounting portion (54) may be a portion where the guide cover (5) comes into contact with the second guide (4). The mounting portion (54) may be a portion where the guide cover (5) is mounted on the upper end of the second guide (4). The mounting portion (54) may be a portion where the guide cover (5) is supported by the upper end of the second guide (4). However, the arrangement of the mounting portion (54) is not limited to the above description.

[0126] According to an exemplary embodiment, a guide cover (5) can cover a space between a first guide (33) and a second guide (4). The guide cover (5) can cover a guide gap (53). The guide cover (5) can seal a space between the first guide (33) and the second guide (4). The guide cover (5) can guide an air flow path so that air sucked by the motor assembly (30) can be directed toward the control board (34). The guide cover (5) can provide an air flow path so that air sucked by the motor assembly (30) can pass through the first guide (33) and be directed toward the second guide (4). The guide cover (5) can prevent air sucked by the motor assembly (30) from leaking out through the guide gap (53). However, the function of the guide cover (5) is not limited to the above description.

[0127] Meanwhile, the fan motor (31) of the motor assembly (30) according to the exemplary embodiment may be a high-performance fan motor (31). The high-performance fan motor (31) may provide high output to the impeller (32) so that the motor assembly (30) can provide strong suction force. The high-performance fan motor (31) may provide a high rotation speed to the impeller (32) so that the motor assembly (30) can provide strong suction force. The rotation speed of the fan motor (31) may be 60,000 RPM or more and 138,000 RPM or less. The power consumption of the fan motor (31) may be 55 W or more and 580 W or less. When the fan motor (31) is a high-performance fan motor (31), it may be necessary to reduce noise generated during operation of the fan motor (31). However, the performance, rotation speed, output, and noise generation of the fan motor (31) are not limited to the above description.

[0128] According to an exemplary embodiment, a first guide (33) may be disposed adjacent to an impeller (32). The impeller (32) may generate noise and vibration through rotation. The impeller (32) may transmit the noise and vibration to the first guide (33). The first guide (33) may receive the noise and vibration through the impeller (32).

[0129] The guide cover (5) according to an exemplary embodiment may include an elastic material. The guide cover (5) may prevent the first guide (33) from transmitting noise and vibration to the outside. The guide cover (5) may dampen vibration of the first guide (33). The guide cover (5) may dampen vibration of the first guide (33) through elastic deformation. The guide cover (5) may act as a damper for vibration of the first guide (33). The guide cover (5) may dampen noise of the first guide (33). However, the function of the guide cover (5) is not limited to the above description.

[0130] The guide cover (5) according to an exemplary embodiment may include an opening (55). The guide cover (5) may include an opening (55) that exposes the fifth suction portion (330). The guide cover (5) may not reduce the suction force generated by the motor assembly (30). The guide cover (5) may reduce noise and vibration of the motor assembly (30). However, the function of the guide cover (5) is not limited to the above description.

[0131] Referring again to FIGS. 10 and 13, the second guide (4) according to the exemplary embodiment may include a fixing protrusion (44). The support frame (6) may include a fixing groove (64). The second guide (4) may be supported by the support frame (6). The fixing protrusion (44) may be accommodated in the fixing groove (64). The support frame (6) may support the second guide (4). The support frame (6) may cover the second guide (4). However, the support relationship between the second guide (4) and the support frame (6) is not limited to the above description.

[0132] Fig. 15 is an exploded perspective view of the motor assembly (30) of Fig. 12 according to an exemplary embodiment, with the first guide (33) and the second guide (4) separated and viewed from different directions.

[0133] Referring to FIGS. 12 to 15, a fan motor (31) according to an exemplary embodiment may include a motor frame (311). The motor frame (311) may connect the fan motor (31) and the impeller (32). The motor frame (311) may be disposed between the fan motor (31) and the impeller (32). The motor frame (311) may support the fan motor (31).

[0134] According to an exemplary embodiment, the motor frame (311) may include a second protrusion (3111). The guide cover (5) may include a second groove (51). The guide cover (5) may be fixed to the motor frame (311). The second protrusion (3111) may be fastened to the second groove (51). The guide cover (5) may be fixed to the motor frame (311) by fastening the second protrusion (3111) to the second groove (51). However, the fixing of the guide cover (5) and the motor frame (311) is not limited to the above description.

[0135] According to an exemplary embodiment, the motor frame (311) may include a third protrusion (3112). The first guide (33) may include a third groove (332). The first guide (33) may be fixed to the motor frame (311). The third protrusion (3112) may be fastened to the third groove (332). By fastening the third protrusion (3112) to the third groove (332), the first guide (33) may be fixed to the motor frame (311). However, the fixing of the first guide (33) and the motor frame (311) is not limited to the above description.

[0136] Referring again to FIGS. 10, 12, and 14, the end (40) of the second guide (4) according to the exemplary embodiment may be disposed opposite the control substrate (34). The second guide (4) may be disposed spaced apart from the control substrate (34). The second guide (4) may be disposed spaced apart from the control substrate (34) by a predetermined distance. The distance (L1) between the second guide (4) and the control substrate (34) may be 4 mm or more. The distance (L1) between the second guide (4) and the control substrate (34) may be 5 mm or more. The distance (L1) between the second guide (4) and the control substrate (34) may be 20 mm or less. The distance (L1) between the second guide (4) and the control substrate (34) may be 10 mm or less. The distance (L1) at which the second guide (4) is spaced from the control board (34) may be the distance (L1) at which the end (40) of the second guide (4) is spaced from the control board (34). However, the positional relationship between the second guide (4) and the control board (34) is not limited to the above description.

[0137] The motor assembly (30) according to an exemplary embodiment may include a lower gap (410). The lower gap (410) may be a gap defined by a space between the control board (34) and the second guide (4). The space between the control board (34) and the second guide (4) may define the lower gap (410). The lower gap (410) may be a passage through which air sucked by the motor assembly (30) is discharged. The air sucked by the motor assembly (30) may flow into the lower gap (410) by the control board (34). The control board (34) may discharge the air sucked by the motor assembly (30) into the lower gap (410). When the lower gap (410) is greater than a predetermined distance, the air sucked by the motor assembly (30) may be properly discharged into the lower gap (410). When the length (L1) of the lower gap (410) is a predetermined length or longer, the air sucked by the motor assembly (30) can be smoothly discharged. When the length (L1) of the lower gap (410) is 4 mm or longer, the air sucked by the motor assembly (30) can be smoothly discharged through the lower gap (410). When the length (L1) of the lower gap (410) is 5 mm or longer, the air sucked by the motor assembly (30) can be smoothly discharged through the lower gap (410). However, the length (L1) of the lower gap (410) and the discharge of air are not limited to the above description.

[0138] The control board (34) according to an exemplary embodiment can change the flow direction of air sucked by the motor assembly (30) from the axial direction (A) to the radial direction. The flow direction of air sucked by the motor assembly (30) can be refracted in the radial direction at the control board (34). The radial direction can be a direction intersecting the axial direction (A). The radial direction can be a direction perpendicular to the axial direction (A). However, the flow direction of air sucked by the motor assembly (30) is not limited to the above description.

[0139] Meanwhile, the relationship between the cooling provided to the second guide (4) and the control board (34) will be described exemplarily below.

[0140] If the fan motor (31) according to the exemplary embodiment is a high-performance fan motor (31), the amount of power that the control board (34) must supply to the fan motor (31) may be large. If the fan motor (31) is a high-performance fan motor (31), the amount of heat generated in the control board (34) may be large. If the amount of heat generated in the control board (34) is large, cooling may need to be provided to the control board (34). However, the degree of heat generated in the control board (34) is not limited to the above description. For example, the need for cooling of the control board (34) and the performance of the fan motor (31) may be unrelated.

[0141] The second guide (4) according to the exemplary embodiment can provide cooling to the control board (34). When the air sucked by the motor assembly (30) reaches the control board (34) through the second guide (4), the control board (34) can be cooled. When the second guide (4) guides the flow of air toward the control board (34), the control board (34) can be cooled. The air sucked by the motor assembly (30) can cool the control board (34). The air sucked by the motor assembly (30) can cool the control board (34) by reaching the control board (34) through the passage guided by the second guide (4). However, the relationship between the cooling of the control board (34) and the air sucked by the motor assembly (30) is not limited to the above description.

[0142] The second guide (4) according to an exemplary embodiment may include a nozzle portion (41) at the end portion (40). The nozzle portion (41) may be a portion whose area becomes narrower as it goes toward the control board (34). The nozzle portion (41) may be a portion that increases the speed of air directed toward the control board (34). The nozzle portion (41) may be a portion that increases the pressure of air directed toward the control board (34). The nozzle portion (41) may be a portion that changes the direction in which air moves toward the control board (34).

[0143] The nozzle portion (41) according to an exemplary embodiment may be configured to condense the air sucked by the motor assembly (30). The nozzle portion (41) may have a gradient of a predetermined angle (D) with respect to the second guide (4). The nozzle portion (41) may have a gradient of a predetermined angle (D) with respect to the end portion (40) of the second guide (4). The nozzle portion (41) may have a gradient in the axial direction (A). The nozzle portion (41) may have a shape that is bent in a direction in which the diameter of the second guide (4) decreases. The angle (D) of the gradient of the nozzle portion (41) may be an angle (D) formed by a straight line connecting both ends of the nozzle portion (41) and the second guide (4). The angle (D) of the gradient of the nozzle portion (41) may be an angle (D) formed by a straight line connecting both ends of the nozzle portion (41) and the axial direction (A). However, the shape of the nozzle portion (41) is not limited to the above description. For example, the nozzle portion (41) may have a curved gradient.

[0144] According to an exemplary embodiment, air sucked by the motor assembly (30) can flow along the inner surface of the second guide (4) to the control board (34). The air sucked by the motor assembly (30) can be refracted by the nozzle unit (41). The flow speed of the air sucked by the motor assembly (30) can be increased by the nozzle unit (41). The pressure of the air sucked by the motor assembly (30) can be increased by the nozzle unit (41). The air sucked by the motor assembly (30) can be condensed by the nozzle unit (41). The density of the air sucked by the motor assembly (30) can be increased by the nozzle unit (41). However, the relationship between the flow of the air sucked by the motor assembly (30) and the nozzle unit (41) is not limited to the above description.

[0145] The nozzle unit (41) according to an exemplary embodiment can provide a flow of air having a high degree of cohesion to the control substrate (34). The nozzle unit (41) can provide a flow of air having a high density to the control substrate (34). If a flow of air having a high degree of cohesion is provided to the control substrate (34), the cooling degree of the control substrate (34) can be high. If a flow of air having a high density is provided to the control substrate (34), the cooling degree of the control substrate (34) can be high. The nozzle unit (41) can guide the flow of air to provide a high degree of cooling to the control substrate (34). However, the relationship between the cooling of the control substrate (34) and the nozzle unit (41) is not limited to the above description.

[0146] Meanwhile, the relationship between the second guide (4) and noise reduction of the motor assembly (30) will be described exemplarily below.

[0147] If the fan motor (31) according to the exemplary embodiment is a high-performance fan motor (31), noise prevention may be required. However, the performance and noise generation of the motor assembly (30) are not limited to the above description.

[0148] The noise of the motor assembly (30) according to the exemplary embodiment may be transmitted to the outside through the lower gap (410). The noise of the motor assembly (30) may be transmitted to the outside through the air discharged to the lower gap (410). If the noise of the motor assembly (30) is transmitted through the lower gap (410) without reaching the control board (34), the noise may be excessive. If the noise of the motor assembly (30) transmitted toward the control board (34) spreads widely in the radial direction, the noise transmitted to the outside may be excessive.

[0149] The nozzle unit (41) according to the exemplary embodiment can prevent the noise of the motor assembly (30) transmitted toward the control board (34) from spreading widely in the radial direction. The nozzle unit (41) can prevent the noise of the motor assembly (30) from being transmitted to the lower gap (410). The nozzle unit (41) can induce the noise of the motor assembly (30) to linger on the control board (34). The noise of the motor assembly (30) lingering on the control board (34) may be lingering between the elements disposed on the control board (34). The noise of the motor assembly (30) can be diluted by the elements disposed on the control board (34). The noise of the motor assembly (30) can be buffered by the elements disposed on the control board (34). The nozzle unit (41) can reduce the noise of the motor assembly (30). However, the relationship between the noise of the nozzle part (41) and the motor assembly (30) is not limited to the above description.

[0150] Fig. 16 is a perspective view illustrating the operation of the clip portion (430) of the second guide (4) according to an exemplary embodiment.

[0151] Referring to FIGS. 15 and 16, the second guide (4) according to the exemplary embodiment can be assembled to the fan motor (31). The second guide (4) can be assembled in a form that surrounds the fan motor (31). The second guide (4) can be assembled to the fan motor (31) by being fastened to the outside of the fan motor (31). The second guide (4) can be fastened to the outside of the fan motor (31). The second guide (4) can be fastened in a form that surrounds the fan motor (31). The second guide (4) can be fastened to the fan motor (31) by being positionally fixed to the outside of the fan motor (31). However, the assembly of the second guide (4) is not limited to the above description.

[0152] The second guide (4) according to an exemplary embodiment may include an avoidance portion (45). The avoidance portion (45) of the second guide (4) may have a concave structure to avoid the interference member (341) of the control board (34). The interference member (341) may be an electrical element disposed on the control board (34). The interference member (341) may have a structure that protrudes from the control board (34) toward the fan motor (31). The second guide (4) may include an avoidance portion (45) having a concave structure to prevent interference with the interference member (341) of the control board (34). When the second guide (4) is assembled to the fan motor (31), it may not interfere with the interference member (341) of the control board (34). However, the structure and arrangement of the interference member (341) and the avoidance portion (45) are not limited to the above description.

[0153] The second guide (4) according to an exemplary embodiment may include a clip portion (430). The clip portion (430) may be configured to fasten both side ends (43) of the second guide (4). The clip portion (430) may secure both side ends (43) of the second guide (4) to each other. The clip portion (430) may include a fourth groove (431) and a fourth protrusion (432). The fourth protrusion (432) may be inserted into the fourth groove (431). The fourth protrusion (432) may be secured to the fourth groove (431). The fourth protrusion (432) and the fourth groove (431) may be secured through a hook connection. The fourth protrusion (432) may be arranged on one side end (43) of the second guide (4), and the fourth groove (431) may be arranged on the other side end (43) of the second guide (4). However, the function and structure of the side end (43) of the second guide (4) are not limited to the above description.

[0154] A second guide (4) according to an exemplary embodiment may include a link (42). The link (42) may be flexible. The second guide (4) may be bendable with respect to the link (42). The second guide (4) may be bent with respect to the link (42). The second guide (4) may be divided into a first part (421) and a second part (422) with respect to the link (42). The first part (421) and the second part (422) may rotate around the link (42). The link (42) may provide a rotatable structure so that an end of the first part (421) and an end of the second part (422) may be brought into contact. A fourth groove (431) may be arranged at an end of the first part (421). A fourth protrusion (432) may be arranged at an end of the second part (422). However, the function and structure of the link (42) are not limited to the above description.

[0155] According to an exemplary embodiment, the clip portion (430) of the second guide (4) can fasten both side ends (43) of the second guide (4) as the link (42) is bent. However, the bending of the link (42) and the fastening of the clip portion (430) are not limited to the above description.

[0156] Fig. 17 is a partial cross-sectional view of a second guide (4) according to an exemplary embodiment.

[0157] Referring to FIGS. 15 to 17, the second guide (4) according to the exemplary embodiment may have a predetermined thickness (T). The thickness (T) of the second guide (4) may be 1 mm or more and 3 mm or less. The thickness (T) of the second guide (4) may be 1.5 mm or more and 2.5 mm or less. However, the thickness (T) of the second guide (4) is not limited to the above description.

[0158] The nozzle portion (41) of the second guide (4) according to an exemplary embodiment may have a predetermined length (L2). The length (L2) of the nozzle portion (41) may be 1 mm or more. The length (L2) of the nozzle portion (41) may be 1.5 mm or more. The length (L2) of the nozzle portion (41) may be 2 mm or more. The length (L2) of the nozzle portion (41) may be 3 mm or more. The length (L2) of the nozzle portion (41) may be 10 mm or less. The length (L2) of the nozzle portion (41) may be 5 mm or less. However, the length (L2) of the nozzle portion (41) is not limited to the above description.

[0159] The nozzle part (41) of the second guide (4) according to an exemplary embodiment may have a gradient of a predetermined angle (D). The gradient of the predetermined angle (D) of the nozzle part (41) may be 5° or more and 60° or less. The gradient of the predetermined angle (D) of the nozzle part (41) may be 10° or more and 40° or less. The gradient of the predetermined angle (D) of the nozzle part (41) may be 15° or more and 30° or less. However, the gradient of the predetermined angle (D) of the nozzle part (41) is not limited to the above description.

[0160] Fig. 18 is a cross-sectional view of the motor section (3) of Fig. 6 according to an exemplary embodiment, viewed in the BB direction.

[0161] Referring to FIGS. 6, 10, 12, 13, 14, 17, and 18, the motor unit (3) according to the exemplary embodiment may be configured to suck air from the fourth suction unit (3000) and discharge it to the discharge unit (3001). The motor unit (3) may provide an internal flow path so that the sucked air can flow. The air sucked by the motor unit (3) from the fourth suction unit (3000) may flow through the internal flow path and be discharged to the discharge unit (3001). However, the flow of the air sucked by the motor unit (3) is not limited to the above description.

[0162] The internal flow path of the motor unit (3) according to an exemplary embodiment may include a first flow path (F1) passing through the fourth suction portion (3000) and directed toward the impeller (32). The internal flow path may include a second flow path (F2) passing through the impeller (32) and directed toward the first guide (33). The internal flow path may include a third flow path (F3) passing through the first guide (33) and directed toward the guide gap (53). The internal flow path may include a fourth flow path (F4) passing through the guide gap (53) and directed toward the second guide (4). The internal flow path may include a fifth flow path (F5) passing through the second guide (4) and directed toward the control board (34). The internal flow path may include a sixth flow path (F6) passing through the end (40) of the second guide (4) and directed toward the control board (34). The internal flow path may include a seventh flow path (F7) passing through the control board (34) and directed toward the discharge hole (62). The internal flow path may include an eighth flow path (F8) passing through the discharge hole (62) and directed toward the filter (7). However, the internal flow path of the motor unit (3) is not limited to the above description.

[0163] According to an exemplary embodiment, the sixth flow path (F6) may pass through the end (40) of the second guide (4) and may be directed toward the control board (34). The internal flow path may include the sixth flow path (F6) passing through the nozzle portion (41) of the second guide (4) and directed toward the control board (34). The sixth flow path (F6) may pass through the nozzle portion (41) of the second guide (4) and directed toward the control board (34). The air sucked by the motor unit (3) may flow and be condensed as it passes through the sixth flow path (F6). The air sucked by the motor unit (3) may flow and be condensed in the axial direction (A) as it passes through the sixth flow path (F6). The air sucked by the motor unit (3) may have a faster flow velocity as it passes through the sixth flow path (F6). The density of the air sucked by the motor unit (3) may increase as it passes through the sixth flow path (F6). The air sucked by the motor unit (3) can pass through the sixth flow path (F6) and cool the control board (34). The air sucked by the motor unit (3) can exchange heat with the control board (34) through the sixth flow path (F6). However, the flow of the air sucked by the motor unit (3) is not limited to the above description.

[0164] According to an exemplary embodiment, the flow of air sucked by the motor unit (3) can reach the control board (34). The control board (34) can change the direction of flow of the air sucked by the motor unit (3). The control board (34) can reflect the flow of air sucked by the motor unit (3). The flow of air sucked by the motor unit (3) can pass through the sixth flow path (F6) and be reflected by the control board (34). The control board (34) can reflect the flow of air sucked by the motor unit (3) and direct it toward the exhaust hole (62). The control board (34) can reflect the flow of air sucked by the motor unit (3) and direct it toward the lower gap (410). The control board (34) can reflect the flow of air sucked by the motor unit (3) and direct it toward the seventh flow path (F7). However, the control board (34) and the flow of air are not limited to the above description.

[0165] According to an exemplary embodiment, the seventh flow path (F7) may pass through the control board (34) and may be directed toward the exhaust hole (62). The internal flow path may include the seventh flow path (F7) passing through the control board (34) and directed toward the control support frame (6). The seventh flow path (F7) may pass through the control board (34) and may be directed toward the support frame (6). The air sucked by the motor unit (3) may be directed toward the exhaust hole (62) included in the support frame (6) after cooling the control board (34). However, the flow of the seventh flow path (F7) and the air is not limited to the above description.

[0166] Meanwhile, the enlarged view E of FIG. 18 is an enlarged view for explaining the gap between the second guide (4) and the support frame (6) according to an exemplary embodiment.

[0167] Referring to the enlarged view E, the second guide (4) according to the exemplary embodiment can be arranged with a predetermined distance (L3) from the support frame (6). The second guide (4) can be arranged with a predetermined distance (L3) from the discharge hole (62). The end (40) of the second guide (4) can be arranged with a predetermined distance (L3) from the support frame (6). The end (40) of the second guide (4) can be arranged with a predetermined distance (L3) from the discharge hole (62). The nozzle part (41) can be arranged with a predetermined distance (L3) from the support frame (6). The nozzle part (41) can be arranged with a predetermined distance (L3) from the discharge hole (62). The predetermined distance (L3) can be 1 mm or more and 10 mm or less. The predetermined distance (L3) can be 1.5 mm or more and 8 mm or less. The above predetermined interval (L3) may be 2 mm or more and 5 mm or less. However, the above predetermined interval (L3) is only an exemplary embodiment and is not limited thereto.

[0168] Fig. 19 is a cross-sectional view of the motor section (3) of Fig. 6 according to an exemplary embodiment, viewed in the CC direction.

[0169] Referring to FIGS. 6, 10, 12, 13, 14, 17 to 19, the internal flow path of the motor unit (3) according to the exemplary embodiment may include an eighth flow path (F8) configured to pass through the discharge hole (62). The eighth flow path (F8) may include a direct flow path (F8a) and a bypass flow path (F8b). The direct flow path (F8a) may be a flow path that does not face the discharge portion (3001) of the motor unit (3). The bypass flow path (F8b) may be a flow path that faces the discharge portion (3001) of the motor unit (3). The direct flow path (F8a) may be a flow path through which air passing through the discharge hole (62) passes directly toward the filter (7). The bypass path (F8b) may be a path through which air passing through the discharge hole (62) moves toward the filter (7) along the inner surface of the blocking film (81). The blocking film (81) can prevent air passing through the bypass path (F8b) from flowing directly toward the discharge unit (3001). The blocking film (81) can reduce noise of air discharged from the motor unit (3). However, the configuration and arrangement of the blocking film (81) and the bypass path (F8b) are not limited to the above description.

[0170] The internal flow path of the motor unit (3) according to an exemplary embodiment may include a ninth flow path (F9) passing through the filter (7) and directed toward the discharge hole (62). The ninth flow path (F9) may pass through the filter (7) and directed toward the discharge hole (62). Air sucked by the motor unit (3) passes through the ninth flow path (F9), and internal noise may be reduced. The ninth flow path (F9) may reduce noise within the motor unit (3). However, the configuration and function of the ninth flow path (F9) are not limited to the above description.

[0171] The internal flow path of the motor unit (3) according to an exemplary embodiment may include a tenth flow path (F10) configured to discharge air through the discharge portion (3001). The tenth flow path (F10) may be a flow path passing through the discharge portion (3001). The tenth flow path (F10) may discharge air sucked by the fourth suction portion (3000) of the motor unit (3) through the discharge portion (3001). However, the arrangement of the tenth flow path (F10) is not limited to the above description.

[0172] Meanwhile, the enlarged view G of FIG. 19 is an enlarged view for explaining the gap (L4) between the discharge hole (62) and the blocking film (81) according to an exemplary embodiment.

[0173] Referring to the enlarged view G, the exhaust hole (62) according to the exemplary embodiment may be arranged with a predetermined distance (L4) from the blocking film (81). The predetermined distance (L4) may be 1 mm or more and 10 mm or less. The predetermined distance (L4) may be 1.5 mm or more and 8 mm or less. The predetermined distance (L4) may be 2 mm or more and 5 mm or less. When the exhaust hole (62) and the blocking film (81) are arranged with a predetermined distance (L4), the flow of air passing through the bypass path (F8b) may be smooth. However, the predetermined distance (L4) is only an exemplary embodiment and is not limited thereto.

[0174] FIG. 20 is a diagram illustrating noise of a motor assembly (30) according to an exemplary embodiment. In FIG. 20, the horizontal axis of the graph may represent the frequency of the noise. The unit of frequency may be Hertz (Hz). The vertical axis of the graph may represent the magnitude of the noise. The unit of the magnitude of the noise may be decibels (dBA).

[0175] In Fig. 20, a graph measuring noise of a motor assembly (30) according to an embodiment including a second guide (4; see Fig. 10) and a filter support (8; see Fig. 10) is indicated by H1. The second guide (4) according to the embodiment includes a nozzle portion (41; see Fig. 17) arranged at an end (40), and the length (L2) of the nozzle portion (41) was approximately 3 mm, and the angle (D) of the nozzle portion (41) was approximately 20°.

[0176] The graph measuring the noise of the motor assembly (30) according to the comparative example is indicated by H2. The motor assembly according to the comparative example does not include the nozzle part (41) and the filter support part (8) compared to the motor assembly (30) according to the embodiment, and the remaining configuration is the same.

[0177] Referring to Fig. 20, the converted noise value of H1 was found to be 83.5 dB. The converted noise value of H2 was found to be 88.8 dB. The motor assembly (30) including the nozzle section (41; see Fig. 17) and the blocking section can reduce noise by approximately 5.3 dB. However, the above description is only an exemplary noise reduction effect and is not limited thereto.

[0178] The converted noise value may be a noise value converted from individual noise values ​​measured by frequency. The converted noise value may be a sum of individual noise values. The converted noise value may be the total amplitude sum of individual noise values. The converted noise value may be a value obtained by summing individual noise values ​​according to the dB summation method. The dB summation method can be expressed by the following mathematical formula.

[0179]

[0180] At this time, dB1 to dB n, can be an individual noise value. The individual noise value can be a value converted from the difference in vibration acceleration by frequency. The individual noise value can be a value that applies a weighting factor by frequency. The individual noise value can be a vibration level, a sound pressure level, or a sound power level.

[0181] However, the conversion noise value is not limited to the above description.

[0182] A motor assembly (30) including a nozzle portion (41) and a blocking portion according to an exemplary embodiment may have a noise reduction effect. The motor assembly (30) including the nozzle portion (41) and the blocking portion may have a significant noise reduction effect at a frequency of 600 Hz to 3000 Hz. However, the above description is merely an exemplary range and is not limited thereto.

[0183] The above-described embodiments are merely illustrative, and those skilled in the art will readily appreciate various modifications and equivalent alternative embodiments. Therefore, the true scope of technical protection afforded by the exemplary embodiments should be determined by the technical spirit of the invention as set forth in the following claims.

[0184] A motor assembly according to an exemplary embodiment may be configured to generate suction force in a vacuum cleaner.

[0185] A motor assembly according to an exemplary embodiment includes: a control substrate; a fan motor disposed on the control substrate; an impeller configured to rotate by the fan motor; a first guide covering the impeller and guiding a flow path of air so that air sucked in an axial direction of the impeller can be directed toward the control substrate; and a second guide disposed between the first guide and the control substrate, the second guide covering the fan motor and guiding a flow path of air; wherein the second guide may include a nozzle portion disposed spaced apart from the control substrate and configured to concentrate a flow of air at an end facing the control substrate and having a gradient of a predetermined angle with respect to the axial direction.

[0186] The gradient of the predetermined angle with respect to the axial direction of the above nozzle part may be 5° to 60°.

[0187] The length of the above nozzle portion may be 2 mm or more.

[0188] The thickness of the above second guide may be 1 mm or more and 3 mm or less.

[0189] The distance between the second guide and the control board may be 5 mm.

[0190] The second guide may include a clip portion and a flexible link, and the clip portion may be configured to engage both end portions of the second guide as the link is bent.

[0191] The above motor assembly further includes a guide cover surrounding the first guide, and the guide cover may include an elastic material.

[0192] The above guide cover may be configured to seal between the first guide and the second guide.

[0193] The above motor assembly further includes a support frame covering the second guide, wherein the support frame may include a plurality of discharge holes arranged along an outer surface thereof.

[0194] The above motor assembly may further include a housing comprising an axial suction portion and a radial discharge portion intersecting the axial direction and forming an exterior of the motor assembly.

[0195] The above motor assembly further includes a filter disposed between the support frame and the housing, and the filter may be configured to collect foreign substances discharged to the discharge portion.

[0196] The motor assembly further includes a filter support member arranged to support the filter between the filter and the support frame, wherein the filter support member comprises:

[0197] It may include a blocking film that covers the discharge hole from the outside, which is positioned opposite the discharge portion among the plurality of discharge holes.

[0198] The gap between the above-mentioned barrier and the above-mentioned discharge hole may be 4 mm or more and 6 mm or less.

[0199] A dust collecting device according to an exemplary embodiment may be configured to generate suction force in a vacuum cleaner and temporarily store foreign substances sucked by the vacuum cleaner.

[0200] A dust collecting device according to an exemplary embodiment may include a motor unit including a motor assembly; and a dust collecting unit configured to temporarily store foreign substances by separating them from air sucked by the cleaner.

[0201] A vacuum cleaner according to an exemplary embodiment may include: a suction device configured to suck up foreign substances; a vacuum cleaner body including the dust collecting device of claim 14 and storing foreign substances sucked up through the suction device; and a transfer unit disposed between the suction device and the vacuum cleaner body and configured to transfer foreign substances sucked up from the suction device to the vacuum cleaner body.

[0202] A vacuum cleaner according to an exemplary embodiment may provide a miniaturized vacuum cleaner.

[0203] A dust collector according to an exemplary embodiment can provide a miniaturized dust collector.

[0204] A motor assembly according to an exemplary embodiment can provide a miniaturized motor assembly.

[0205] A vacuum cleaner according to an exemplary embodiment may provide a vacuum cleaner having strong suction power.

[0206] A dust collector according to an exemplary embodiment can provide a dust collector with strong suction power.

[0207] A motor assembly according to an exemplary embodiment can provide a motor assembly having a strong suction force.

[0208] A motor assembly according to an exemplary embodiment can provide a motor assembly with high output.

[0209] A vacuum cleaner according to an exemplary embodiment can provide a vacuum cleaner with reduced noise.

[0210] A dust collector according to an exemplary embodiment can provide a dust collector with reduced noise.

[0211] A motor assembly according to an exemplary embodiment can provide a motor assembly with reduced noise.

[0212] A second guide according to an exemplary embodiment can reduce noise of the motor assembly.

[0213] A fluid cohesive member according to an exemplary embodiment can reduce noise of a motor assembly.

[0214] A fluid cohesive member according to an exemplary embodiment can prevent noise from the motor assembly from spreading.

[0215] A fluid cohesive member according to an exemplary embodiment can prevent noise from the motor assembly from being widely spread.

[0216] A filter support according to an exemplary embodiment can reduce noise of a motor assembly.

[0217] A barrier according to an exemplary embodiment can reduce noise of a motor assembly.

[0218] A barrier according to an exemplary embodiment can prevent noise from the motor assembly from reaching the exhaust port.

[0219] A barrier according to an exemplary embodiment can prevent noise from the motor assembly from being directly emitted.

[0220] A motor assembly according to an exemplary embodiment can provide a motor assembly having improved cooling performance of a control board.

[0221] A motor assembly according to an exemplary embodiment can provide a motor assembly capable of preventing overheating of a control board.

[0222] A second guide according to an exemplary embodiment can prevent overheating of the control board.

[0223] A fluidic coagulation unit according to an exemplary embodiment can prevent overheating of a control substrate.

[0224] A fluidized bed according to an exemplary embodiment can increase the heat exchange efficiency between the air sucked by the motor assembly and the control board.

[0225] A fluid coagulation unit according to an exemplary embodiment can coagulate air sucked by a motor assembly.

[0226] A fluidized bed according to an exemplary embodiment can condense air sucked by a motor assembly and then deliver it to a control board.

[0227] A second guide according to an exemplary embodiment may have a structure that can be coupled to a fan motor.

Claims

1. In a motor assembly (30) configured to generate suction force in a vacuum cleaner (1), Control board (34); Fan motor (31); An impeller (32) configured to rotate by the above fan motor (31); A first guide (33) that covers the impeller (32) and guides the air flow path so that the air sucked in the axial direction (A) of the impeller (32) can be directed to the control board (34); and A second guide (4) is disposed between the first guide (33) and the control board (34) to cover the fan motor (31) and guide the air flow path; The above second guide (4) is, It is placed apart from the above control board (34), A motor assembly (30) including a nozzle portion (41) having a gradient of a predetermined angle (D) with respect to the axial direction at an end portion (40) facing the control board (34).

2. In paragraph 1, A motor assembly (30) in which the gradient of the predetermined angle (D) with respect to the axial direction of the nozzle part (41) is 5° to 60°.

3. In paragraph 2, A motor assembly (30) having a length of the nozzle portion (41) of 2 mm or more.

4. In one of paragraphs 1 to 3, A motor assembly (30) in which the thickness (T) of the second guide (4) is 1 mm or more and 3 mm or less.

5. In one of paragraphs 1 to 4, A motor assembly (30) in which the distance between the second guide (4) and the control board (34) is 5 mm or more.

6. In one of paragraphs 1 to 5, The above second guide (4) includes a clip portion (430) and a link (42), The above clip portion (430) is configured to fasten both side ends (43) of the second guide (4) as the link (42) is bent, and is a motor assembly (30).

7. In one of paragraphs 1 to 6, The above motor assembly (30) is Further comprising a guide cover (5) surrounding the first guide (33); The above guide cover (5) is a motor assembly (30) including an elastic material.

8. In paragraph 7, The above guide cover (5) is, A motor assembly (30) configured to seal between the first guide (33) and the second guide (4).

9. In one of paragraphs 1 to 8, The above motor assembly (30) is Further comprising a support frame (6) covering the second guide (4); The above support frame (6) is a motor assembly (30) including a plurality of discharge holes (62) arranged along the outer surface (61).

10. In paragraph 9, The above motor assembly (30) is A motor assembly (30) further comprising a housing (300) comprising an intake portion in the axial direction (A) and a discharge portion (3001) in the radial direction intersecting the axial direction (A) and forming an outer appearance of the motor assembly (30).

11. In paragraph 10, The above motor assembly (30) is It further includes a filter (7) arranged between the support frame (6) and the housing (300); The above filter (7) is configured to collect foreign substances discharged to the discharge portion (3001), and is a motor assembly (30).

12. In paragraph 11, The above motor assembly (30) is It further includes a filter support member (8) arranged between the filter (7) and the support frame (6) to support the filter (7); The above filter support (8) is A motor assembly (30) including a blocking film (81) that covers the discharge hole (62) from the outside, which is positioned facing the discharge portion (3001) among the plurality of discharge holes (62).

13. In paragraph 12, A motor assembly (30) in which the gap between the above-mentioned blocking film (81) and the above-mentioned discharge hole (62) is 4 mm or more and 6 mm or less.

14. In a dust collection device (20) configured to generate suction power in a vacuum cleaner (1) and temporarily store foreign substances sucked by the vacuum cleaner (1), A motor unit (3) including a motor assembly (30) of any one of claims 1 to 13; and A dust collecting device (20) including a dust collecting unit (21) configured to temporarily store foreign substances by separating them from the air sucked in by the vacuum cleaner (1).

15. A suction device (11) configured to suck up foreign substances; A cleaner body (10) including a dust collecting device (20) of Article 14 and storing foreign substances sucked through the suction device (11); and A cleaner (1), comprising a transfer unit (12) arranged between the suction device (11) and the cleaner body (10) and configured to transfer foreign substances sucked from the suction device (11) to the cleaner body (10).

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