Ventilation apparatus

Abstract

The present invention relates to a ventilation apparatus. A ventilation apparatus according to an embodiment of the present invention comprises: a heat exchange element through which heat is exchanged between outdoor air and indoor air; and a filter provided on a suction side of the heat exchange element, enabling purification of air drawn into the heat exchange element. The ventilation apparatus comprises a cleaning device (hereinafter, referred to as a filter cleaning device) for cleaning foreign matter accumulated on the filter, thereby reducing contamination level of the filter and eliminating the inconvenience of a user having to manually remove and clean the filter.

Description

ventilation system

[0001] The present invention relates to a ventilation device.

[0002] A ventilation device is a device that discharges indoor air to the outside and supplies fresh outdoor air to the inside, and its main component is a heat transfer element that allows only heat exchange without mixing the discharged indoor air and the incoming outdoor air.

[0003] The above ventilation device may be connected to an outdoor air intake duct that draws in outdoor air, thereby guiding outdoor air into the ventilation device. Outdoor air drawn in through the outdoor air intake duct may pass through the heating element and then be supplied indoors through a supply duct connected to the ventilation device.

[0004] The above ventilation device may be connected to an internal intake duct that draws in indoor air, thereby guiding indoor air into the ventilation device. Indoor air drawn in through the internal intake duct may pass through the heating element and then be discharged outdoors through an exhaust duct connected to the ventilation device.

[0005] The above ventilation device may be equipped with a filter for filtering foreign substances from the intake air. As the operation time of the ventilation device accumulates, the amount of foreign substances filtered by the filter increases, and the contamination level of the filter increases, which may deteriorate the filter's performance. In particular, the contamination level of the filter for filtering air drawn in from the outdoors may rapidly increase.

[0006] Meanwhile, there was a problem that the user had to disassemble or install the filter to clean or replace the contaminated filter, and wash the filter one by one, which lowered the convenience of use.

[0007] The purpose of the present invention is to provide a ventilation device having a filter cleaning device capable of automatically cleaning a filter installed on an air passage.

[0008] The purpose of the present invention is to provide a ventilation device in which a filter is placed on the inside of a flange that draws in outdoor air, and a cleaning device is provided on one side of the filter, thereby facilitating cleaning of the filter for outdoor air.

[0009] The present invention aims to provide a ventilation device in which the cleaning performance of a filter can be improved by providing a driving motor that moves a filter and a member that cleans the filter surface of the filter moved by the driving motor.

[0010] The purpose of the present invention is to provide a ventilation device capable of improving foreign matter recovery performance by providing a dust bin for storing foreign matter separated from a filter.

[0011] The purpose of the present invention is to provide a ventilation device that can improve the performance of separating foreign substances in the air by providing a cyclone part inside the dust bin.

[0012] A ventilation device according to an embodiment of the present invention includes a heat transfer element that exchanges heat between outdoor air and indoor air, and a filter provided on the suction side of the heat transfer element, so as to purify air sucked into the heat transfer element.

[0013] The above ventilation device includes a cleaning device (hereinafter, filter cleaning device) that cleans foreign substances accumulated in the filter, thereby reducing the contamination level of the filter and eliminating the hassle of the user manually separating and cleaning the filter.

[0014] The above filter may include an outdoor air intake filter provided on the flange side that intakes outdoor air.

[0015] The above filter cleaning device may include a filter that is provided movably.

[0016] The above filter cleaning device may include a driving motor and a power transmission device for moving the filter.

[0017] The above power transmission device may include a rotating bar coupled to the driving motor.

[0018] The above rotating bar may include a first gear portion.

[0019] The above first gear part can be arranged adjacent to both ends of the rotating bar.

[0020] The above filter may include a second gear unit linked to the first gear unit.

[0021] The above second gear unit may be positioned adjacent to both ends of the filter.

[0022] In the process of linking the first gear part and the second gear part, the filter can be guided and moved on the outer surface of the rotating part.

[0023] The above filter may include a filter surface that captures foreign substances, and the filter cleaning device may include a brush that scrapes the filter surface.

[0024] The above filter cleaning device may include a dust bin that stores foreign matter separated from the filter.

[0025] The above filter cleaning device may include a suction motor that provides suction force to draw the foreign matter into the dust bin.

[0026] The interior of the above dustbin may include a cyclone section for separating foreign substances in the air. The cyclone section may have a funnel shape.

[0027] In one aspect of the present invention, a ventilation device may include a housing that accommodates a heat transfer element for heat exchange between indoor air and outdoor air, a filter, and a fan module; a plurality of duct flanges provided in the housing and connected to a duct for exhausting indoor air and supplying outdoor air; and a filter cleaning device provided on one side of the filter and having a dust bin for storing foreign substances separated from the filter.

[0028] The above filter cleaning device may include a brush that removes foreign substances accumulated on the filter.

[0029] The above filter cleaning device may include a suction motor that provides suction power to move foreign matter separated from the filter to the dust bin.

[0030] The above filter includes a filter case and a filter member mounted inside the filter case, and may further include a driving motor for moving the filter member.

[0031] The filter member may further include a rotating bar that is connected to the driving motor and rotates and extends in the longitudinal direction of the filter member, and the filter member may be provided to be deformable so as to move along the outer circumferential surface of the rotating bar.

[0032] It may include a first gear part provided on the above-mentioned rotating bar and a second gear part provided on the above-mentioned filter member and linked to the first gear part.

[0033] The first gear portion may be provided adjacent to both ends of the rotating bar, and the second gear portion may be provided adjacent to both ends of the filter member.

[0034] A case opening is formed on one side of the filter case, and the filter cleaning device may include a brush that is provided to be in contact with the filter surface of the filter member through the case opening.

[0035] The above filter cleaning device includes a suction case forming a suction opening through which foreign matter separated from the filter is suctioned, and the suction case may include a case bar having a brush disposed in the suction opening and in contact with the filter.

[0036] The above suction case may include a first part coupled to the dust bin, a second part provided with the case bar, and a guide member arranged in the internal space of the first and second parts to guide air to the dust bin.

[0037] The above guide member includes a coupling surface coupled to one side of the dust bin, and the coupling surface can form a through hole that transmits air from the suction case to the dust bin.

[0038] The above dustbin may include a suction port through which air containing foreign substances separated from the filter is introduced, and a cyclone section having a funnel shape to separate foreign substances from the air sucked in through the suction port.

[0039] The above plurality of duct flanges may include a first flange for introducing indoor air, a second flange for discharging the indoor air, a third flange for introducing outdoor air, and a fourth flange for supplying the outdoor air to the indoor space, and the filter cleaning device may be configured to clean the filter provided on the inside of the third flange.

[0040] In another aspect of the present invention, a ventilation device may include a housing that accommodates a heat transfer element and a fan module for heat exchange between indoor air and outdoor air; a plurality of duct flanges provided in the housing, the duct flanges including a first flange for introducing indoor air, a second flange for discharging the indoor air, a third flange for introducing outdoor air, and a fourth flange for supplying the outdoor air to an indoor space; and a filter provided on the inside of the third flange to filter outdoor air introduced into the third flange, the filter including a filter case and a filter member that is movably mounted to the filter case.

[0041] The ventilation device may include a rotating bar having an outer surface that guides movement of the filter member; a driving motor that provides driving force to the rotating bar; a brush that comes into contact with the filter member and separates foreign substances from the filter when the filter member moves along the outer surface of the rotating bar; and a dust bin that stores the separated foreign substances.

[0042] It includes a first gear part provided on the above-mentioned rotating bar and a second gear part provided on the above-mentioned filter member and linked to the first gear part, and in the process of the above-mentioned first and second gear parts being linked, the above-mentioned filter member can be deformed and moved along the outer circumferential surface of the above-mentioned rotating bar.

[0043] A suction motor that provides suction power so that foreign matter separated from the filter is introduced into the dust bin; and a cyclone section provided inside the dust bin and generating cyclone flow by driving the suction motor may be included.

[0044] According to an embodiment of the present invention, a filter cleaning device capable of automatically cleaning a filter installed on an air path is provided, thereby reducing the contamination level of the filter and improving filter performance.

[0045] According to an embodiment of the present invention, a filter is placed on the inside of a flange that sucks in outdoor air, and a cleaning device is provided on one side of the filter, so that cleaning of the filter for outdoor air can be easily performed.

[0046] According to an embodiment of the present invention, the cleaning performance of the filter can be improved by providing a driving motor that moves the filter and a member that cleans the filter surface of the filter moved by the driving motor.

[0047] According to an embodiment of the present invention, a dust bin for storing foreign substances separated from a filter can be provided to improve foreign substance recovery performance.

[0048] According to an embodiment of the present invention, a cyclone part may be provided inside the dustbin to improve the performance of separating foreign substances in the air.

[0049] Figure 1 is an external perspective view showing the configuration of a ventilation device according to an embodiment of the present invention.

[0050] Figure 2 is an exploded perspective view of a ventilation device according to an embodiment of the present invention.

[0051] Figure 3 is a perspective view showing the configuration of the main body of a ventilation device according to an embodiment of the present invention.

[0052] Figure 4 is a plan view showing the configuration of the main body of a ventilation device according to an embodiment of the present invention.

[0053] Fig. 5 is a front perspective view showing the configuration of a filter cleaning device according to an embodiment of the present invention.

[0054] Figure 6 is a side perspective view showing the configuration of a filter cleaning device according to an embodiment of the present invention.

[0055] Figure 7 is an exploded perspective view of a filter cleaning device according to an embodiment of the present invention.

[0056] Figure 8 is an exploded perspective view of the suction case provided in the above filter cleaning device.

[0057] Fig. 9 is a perspective view showing the configuration of the driving motor and filter of the above filter cleaning device.

[0058] Fig. 10 is a perspective view showing the configuration of the driving motor and rotating bar of the above filter cleaning device.

[0059] Fig. 11 is a perspective view showing the configuration of the above-mentioned rotating bar and filter member.

[0060] Fig. 12 is a perspective view showing the filter member moving in conjunction with the rotating bar as it rotates.

[0061] Figure 13 is a drawing showing the configuration of a flow path forming part provided inside the above suction case.

[0062] Fig. 14 is a cross-sectional view taken along line 14-14 of Fig. 1.

[0063] Fig. 15 is a perspective view showing the connection between a ventilation device and a plurality of ducts according to an embodiment of the present invention.

[0064] Fig. 16 is a plan view showing another example of the configuration of a ventilation device according to an embodiment of the present invention.

[0065] Fig. 17 is a perspective view showing the ventilation device of Fig. 16 and the connection of multiple ducts.

[0066] Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. When designating components in each drawing, it should be noted that, where possible, identical components will be given the same reference numerals, even if they appear in different drawings. Furthermore, when describing embodiments of the present invention, detailed descriptions of related known structures or functions will be omitted if they are deemed to hinder understanding of the embodiments of the present invention.

[0067] Additionally, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of embodiments of the present invention. These terms are only intended to distinguish the components from other components, and the nature, order, or sequence of the components are not limited by the terms. When it is described that a component is "connected," "coupled," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but another component may also be "connected," "coupled," or "connected" between each component.

[0068] FIG. 1 is an external perspective view showing the configuration of a ventilation device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a ventilation device according to an embodiment of the present invention, FIG. 3 is a perspective view showing the configuration of a main body of a ventilation device according to an embodiment of the present invention, and FIG. 4 is a plan view showing the configuration of a main body of a ventilation device according to an embodiment of the present invention.

[0069] Referring to FIGS. 1 to 4, a ventilation device (10) according to an embodiment of the present invention may include a polyhedral-shaped housing (100) in which a plurality of components are accommodated.

[0070] The housing (100) may have, for example, a hexahedral shape. The housing (100) may include an upper surface and a lower surface, and may include four side surfaces connecting the upper surface and the lower surface.

[0071] The ventilation device (10) may be installed on the ceiling of an indoor space. The ventilation device (10) may include an installation plate (130) provided on the upper side of the housing (100) and coupled to the ceiling. The installation plate (130) is supported on the ceiling by a wire (W), and the wire (W) may be fixed to the ceiling.

[0072] The ventilation device (10) includes a first cover (140) provided on the upper surface of the housing (100), and the first cover (140) may include a coupling bracket (145) coupled to the installation plate (130). The coupling bracket (145) may be inserted into a through hole (133) of the installation plate (130) and then moved in position to be coupled to the bracket fixing portion (135) of the installation plate (130).

[0073] The above-mentioned coupling bracket (145) and bracket fixing member (135) may be provided in multiple numbers at the four corners of the ventilation device (10).

[0074] A duct flange (161, 162, 163, 164) to which a duct is connected may be provided on the side of the housing (100). The duct flange (161, 162, 163, 164) may protrude outward from the side of the housing (100).

[0075] The above duct flanges (161, 162, 163, 164) may include a first flange (161) connected to an air intake duct (see D1 of FIG. 15) that sucks indoor air. Accordingly, the first flange (161) may form an air intake port. The first flange (161) may form a part of a first connection device (190a) among a plurality of duct connection devices (190).

[0076] The above duct flanges (161, 162, 163, 164) may include a second flange (162) through which indoor air sucked in through the first flange (161) is discharged after passing through the heat transfer element (170). Accordingly, the second flange (162) may form an exhaust outlet. The second flange (160) may be connected to an exhaust duct (D2 of FIG. 15).

[0077] The above duct flanges (161, 162, 163, 164) may include a third flange (163) connected to an outdoor air intake duct (see D3 of FIG. 15) that intakes outdoor air. Accordingly, the third flange (163) may form an outdoor air inlet. The third flange (163) may form a part of a second connection device (190b) among a plurality of duct connection devices (190).

[0078] The above duct flanges (161, 162, 163, 164) may include a fourth flange (164) through which outdoor air sucked in through the third flange (163) passes through a heat transfer element (170) and is then supplied to the interior. Accordingly, the fourth flange (164) may form an air supply port. The fourth flange (164) may be connected to an air supply duct (D4 of FIG. 15).

[0079] The second flange (162) and the fourth flange (164) may be respectively placed on opposite sides of the housing (100).

[0080] The above housing (100) may include a first housing (110) and a second housing (120) that are coupled in a vertical direction. A space in which a plurality of components of the ventilation device (10) are accommodated may be formed inside the first and second housings (110, 120).

[0081] The second flange (162) and the fourth flange (164) may be formed by combining the first and second housings (110, 120). That is, the first housing (110) may include a first flange forming portion (114) forming a part of the second flange (162), and the second housing (120) may include a second flange forming portion (124) forming a part of the second flange (162).

[0082] In addition, the first housing (110) may include a first flange forming portion (114) forming a part of the fourth flange (164), and the second housing (120) may include a second flange forming portion (124) forming a part of the fourth flange (164).

[0083] That is, two first flange-forming parts (114) may be provided on both sides of the first housing (110), and two second flange-forming parts (124) may be provided on both sides of the second housing (120).

[0084] The first housing (110) may include an upper surface (111) on which the first cover (140) is placed and a plurality of side surfaces (113) extending downward from the upper surface (111). The plurality of side surfaces (113) may include four side surfaces extending downward from four corners of the upper surface (111).

[0085] The internal space of the first housing (110) can be defined by the upper surface (111) and the four side surfaces (113).

[0086] The second housing (120) may include a bottom portion (121) on which a plurality of components are installed and a plurality of side portions (123) extending upward from the bottom portion (121). The plurality of side portions (123) may include four side portions extending upward from four corners of the upper portion (121).

[0087] The internal space of the second housing (120) can be defined by the upper surface (121) and the four side surfaces (123).

[0088] An opening (127) may be formed in the bottom portion (121). A heating element (170), a filter (176, 177, 300), and a dust container (260) provided in the ventilation device (10) may be positioned in the opening (127). The heating element (170), the filter (176, 177, 300), or the dust container (260) may be supported by the first and second housings (110, 120) by a predetermined hooking mechanism or supporting mechanism. A general hook or hooking projection may be applied to the hooking mechanism or supporting mechanism.

[0089] In order to replace or repair the above heating element (170), filter (176, 177, 300) or dust bin (260), the parts requiring replacement or repair can be pulled out downward through the opening (127).

[0090] The above ventilation device (10) may include a second cover (128) provided on the lower side of the second housing (120). The second cover (128) may shield the opening (127) of the second housing (120).

[0091] The second cover (128) can be moved to open the opening (127), and with the second cover (128) opening the opening (124), the user can pull and separate the heating element (170), filter (176, 177, 300), or dust bin (260).

[0092] The above ventilation device (10) may include a main body (150) composed of main parts for the operation of the ventilation device (10).

[0093] The main body (150) may include a plurality of fan modules (185, 186) that generate air flow. The plurality of fan modules (185, 186) may include a first fan module (185) that sucks in indoor air and exhausts it outdoors, and a second fan module (186) that sucks in outdoor air and supplies it indoors. The first and second fan modules (185, 186) may each include a fan and a motor that rotates the fan.

[0094] The first fan module (185) may be arranged adjacent to the inner side of the second flange (162). The second fan module (186) may be arranged adjacent to the inner side of the fourth flange (164).

[0095] The above main body (150) may include a heating element (170). The heating element (170) is configured so that a first flow path of outdoor air and a second flow path of indoor air exchange heat with each other, and the first flow path and the second flow path may each be provided in multiple numbers and arranged to be stacked on top of each other.

[0096] The air flow flowing through the plurality of first flow paths and the air flow flowing through the plurality of second flow paths can be formed in directions that intersect each other (see arrows in Fig. 4).

[0097] The above heating element (170) has a roughly hexahedral shape, and among the multiple side surfaces of the heating element (170), the first and second side surfaces facing each other form an inlet surface and an outlet surface for outdoor air, respectively, and the third and fourth side surfaces facing each other can form an inlet surface and an outlet surface for indoor air, respectively.

[0098] The above heating element (170) can be placed approximately in the center of the internal space of the housing (100).

[0099] The main body (150) may include a plurality of filters (176, 177, 300). The plurality of filters (175, 176, 177) may include a first filter (300) arranged in an outdoor air flow path. The first filter (300) may be arranged on the inside of a third flange (163) forming an outdoor air intake portion and may be arranged on the inlet side of the heat transfer element (170). Therefore, the outdoor air sucked through the third flange (163) may pass through the first filter (300) and flow into the first flow path of the heat transfer element (170).

[0100] The above-described plurality of filters (176, 177, 300) may include a second filter (176) arranged in a flow path of indoor air. The second filter (176) may be arranged on the inner side of the first flange (161) forming an intake portion of indoor air and may be arranged on the inlet side of the heating element (170). Accordingly, indoor air drawn in through the first flange (161) may pass through the second filter (176) and flow into the second flow path of the heating element (170).

[0101] The first filter (300) may be positioned so as to face the first side forming the outdoor air inlet surface of the heating element (170). The second filter (176) may be positioned so as to face the third side forming the indoor air inlet surface.

[0102] The above first filter (300) and second filter (176) can constitute a “pre-filter”.

[0103] The above-described plurality of filters (176, 177, 300) may include a third filter (177) arranged in the outdoor air path. The third filter (177) may be arranged on the discharge side of the first filter (300) and the inlet side of the heat transfer element (170). Accordingly, the outdoor air sucked through the third flange (163) may sequentially pass through the first filter (300) and the third filter (177) and flow into the first path of the heat transfer element (170).

[0104] For example, the third filter (177) may constitute a “HEPA filter.”

[0105] The above main body (150) may include a PCB device (180) including a control component for the operation of the ventilation device (10). For example, the PCB device (180) may be placed in a space between the first and second fan modules (185, 186) and mounted on a PCB bracket (182).

[0106] The above main body (150) may include a bypass blocking plate (188) to block the sucked outdoor air from being bypassed to the indoor air path side or to block the sucked indoor air from being bypassed to the outdoor air path side.

[0107] The above bypass blocking plate (188) may include a first blocking plate (188a) arranged between the intake side of indoor air and the second fan module (186) and a second blocking plate (188b) arranged between the intake side of outdoor air and the first fan module (185).

[0108] The first blocking plate (188a) may be placed in the space between the first flange (161) and the fourth flange (164), and the second blocking plate (188b) may be placed in the space between the third flange (163) and the second flange (162).

[0109] By means of the first blocking plate (188a), indoor air sucked in from the first flange (161) can be prevented from bypassing the heating element (170) and flowing toward the second fan module (186).

[0110] However, the first blocking plate (188a) may include an openable flap. When the flap is opened, indoor air sucked in from the first flange (161) can bypass the heating element (170) and be supplied to the indoor space through the second fan module (186) and the fourth flange (164).

[0111] By means of the second blocking plate (188b), the outdoor air sucked in from the third flange (163) can be prevented from bypassing the heating element (170) and flowing toward the first fan module (185).

[0112] The above main body (150) may include a backflow prevention damper (187a, 187b) installed on the suction side where air is sucked, i.e., in the inner space of the first flange (161) and the inner space of the third flange (163).

[0113] The above-described backflow prevention damper includes a first damper (187a) through which air sucked in through the first flange (161) passes, and the first damper (187a) can prevent air from flowing from the second filter (176) side to the first flange (161) side.

[0114] The above-described backflow prevention damper includes a second damper (187b) through which air sucked in through the third flange (163) passes, and the second damper (187b) can prevent air from flowing from the first filter (300) side to the third flange (163) side.

[0115] The above-described backflow prevention damper may also be provided to a plurality of fan modules (185, 186). In detail, the above-described backflow prevention damper may be provided on the discharge side of the plurality of fan modules (185, 186) to prevent air from flowing back from the discharge side to the inlet side of the plurality of fan modules (185, 186).

[0116] For example, the backflow prevention damper provided in the first fan module (185) may be located between the inner area of ​​the second flange (162) and the first fan module (185). The backflow prevention damper provided in the second fan module (186) may be located between the inner area of ​​the fourth flange (164) and the second fan module (186).

[0117] The main body (150) may include a filter cleaning device (200) provided on one side of the first filter (300) and configured to clean foreign substances captured in the first filter (300). The filter cleaning device (200) may be configured to clean foreign substances filtered in the first filter (300) from air sucked in from outdoors.

[0118] The filter cleaning device (200) may include a filter driving motor for moving the first filter (300), a brush (244b) for scraping the surface of the first filter (300), a suction motor (270) for moving foreign substances separated from the first filter (300) to a dust bin (260), etc. The dust bin (260) stores foreign substances separated from the first filter (300) and may be provided on the inlet side of the suction motor (270).

[0119] A detailed description of the above filter cleaning device (200) will be described later with reference to the drawings.

[0120] The above ventilation device (10) may include a duct connecting device (190) that constitutes the first flange (161) and the third flange (163) and is connected to a duct. For example, the duct connecting device (190) may include a first connecting device (190a) that constitutes the first flange (161) and a second connecting device (190b) that constitutes the third flange (163).

[0121] The first connecting device (190a) may be provided on the first edge side of the ventilation device (10), and the second connecting device (190b) may be provided on the second edge side. The first and second connecting devices (190a, 190b) may be arranged to face each other.

[0122] The above duct connecting device (190) can be mounted on the bottom surface (121) of the second housing (120). The bottom surface (121) can include a mounting portion (121a) that supports the duct connecting device (190). The mounting portions (121a) are provided in multiple numbers, and the first connecting device (190a) and the second connecting device (190b) can be mounted on each mounting portion (121a).

[0123] The above duct connecting device (190) can be coupled to the first housing (110) and the second housing (120). For example, when the first and second housings (110, 120) are coupled, a mounting groove in which the duct connecting device (190) is positioned can be formed on the corner side of the first and second housings (110, 120).

[0124] In detail, a first groove (115) that is in contact with a corner of the duct connecting device (190) may be formed on a corner side where a plurality of side portions of the first housing (110) meet. A second groove (125) that is in contact with a corner of the duct connecting device (190) may be formed on a corner side where a plurality of side portions of the second housing (120) meet.

[0125] The first home portion (115) may be formed in multiple numbers at the first corner and the second corner of the first housing (110) so that the first and second connecting devices (190a, 190b) are respectively mounted thereon.

[0126] The second home portion (125) may be formed in multiple numbers at the first and second corners of the second housing (120) so that the first and second connecting devices (190a, 190b) are respectively mounted thereon.

[0127] When the first housing (110) and the second housing (120) are combined, a mounting groove in which the first and second connecting devices (190a, 190b) are positioned can be defined by the first groove (115) and the second groove (125).

[0128] The first connecting device (190a) may include a first plate (191) and a second plate (192) bent from the first plate (191). The first and second plates (191, 192) may have a flat plate shape having a predetermined height.

[0129] The first plate (191) may constitute a portion of one of the multiple side portions (113) of the housing (100). The second plate (192) may constitute a portion of another of the multiple side portions (113).

[0130] The first connecting device (190a) may include a first flange (161) provided on the first plate (191). The first flange (161) may be configured to protrude from the first plate (191).

[0131] For example, the first flange (161) may be configured to protrude from the first side of the housing (100) at the first mounting position of the first connecting device (190a) (see FIG. 15). In addition, the first flange (161) may protrude in the X direction with reference to FIG. 1.

[0132] In the first mounting position, the first end of the first plate (191) and the second plate (192) can be mounted on the mounting portion (121a) of the second housing (120). The first end can be defined as the lower end.

[0133] Conversely, in the second mounting position of the first connecting device (190a), the first flange (161) may be configured to protrude from the second side of the housing (100) (see FIG. 17). In addition, the first flange (161) may protrude in the Y direction with reference to FIG. 1.

[0134] In the second mounting position, the second end portions of the first plate (191) and the second plate (192) can be mounted on the mounting portion (121a) of the second housing (120). The second end portion can be defined as the upper end.

[0135] That is, when the first and second plates (191, 192) are turned over at the first mounting position of the first connecting device (190a) and mounted on the mounting portion (121a), the direction in which the first flange (161) protrudes can be varied.

[0136] The configurations of the first connecting device (190a) and the second connecting device (190b) are identical. Therefore, the description regarding the first connecting device (190a) can also be applied to the second connecting device (190b).

[0137] In detail, the second connecting device (190b) may include a first plate (191) having a third flange (163) and a second plate (192) that is bent from the first plate (191).

[0138] As with the description of the mounting position of the first connecting device (190a), the direction in which the third flange (163) protrudes may vary depending on the direction in which the first and second plates (191, 192) are mounted on the mounting portion (121a).

[0139] FIG. 5 is a front perspective view showing the configuration of a filter cleaning device according to an embodiment of the present invention, FIG. 6 is a side perspective view showing the configuration of a filter cleaning device according to an embodiment of the present invention, FIG. 7 is an exploded perspective view of a filter cleaning device according to an embodiment of the present invention, FIG. 8 is an exploded perspective view of a suction case provided in the filter cleaning device, FIG. 9 is a perspective view showing the configuration of a drive motor and a filter of the filter cleaning device, and FIG. 10 is a perspective view showing the configuration of a drive motor and a rotary bar of the filter cleaning device.

[0140] Referring to FIGS. 5 to 10, a filter cleaning device (200) according to an embodiment of the present invention may be provided on one side of a first filter (300) and configured to clean foreign substances accumulated on the first filter (300).

[0141] The first filter (300) may be placed on the inside of the third flange (163) that sucks in outdoor air, and the second filter (176) may be provided on the inside of the first flange (161) that sucks in indoor air. As the operating time of the ventilation device (10) accumulates, the contamination level of the first filter (300) may be relatively higher than that of the second filter (176).

[0142] Therefore, in this embodiment, the filter cleaning device (200) is described as an example of cleaning the first filter (300). However, the filter cleaning device (200) may also be provided on one side of the second filter (176) and configured to clean the second filter (176).

[0143] The above first filter (300) may include a filter case (310) and a filter member (320) positioned inside the filter case (310) to filter air.

[0144] The above filter case (310) may include a case body (311) having a roughly flat hexahedral shape. The case body (311) includes a bottom portion, an upper portion, and two side portions, and a receiving space in which the filter member (320) is positioned may be formed inside the case body (311).

[0145] The front surface of the filter case (310) may form a passage through which air passes. A grid-shaped case frame (312) may be provided on the front surface of the filter case (310). The case frame (312) may support the filter member (320).

[0146] The rear surface of the filter case (310) may be formed to be open so that air passing through the filter member (320) is discharged.

[0147] A case opening (315) may be formed on the side surface of the filter case (310). The case opening (315) is formed to be long and open in the vertical direction of the side surface, and may provide a space in which a case bar (244a) is positioned.

[0148] The filter case (310) can support a rotating bar (220). A first bar connecting portion (314a) that supports one end of the rotating bar (220) can be provided on the upper surface of the filter case (310). A step portion (313) that is formed downwardly is formed on the upper surface, and the first bar connecting portion (314a) can be formed on the step portion (313).

[0149] The bottom surface of the filter case (310) may be provided with a second bar connecting portion (314b) that supports the other end of the rotating bar (220). The second bar connecting portion (314b) may be formed on the upper surface of the bottom surface.

[0150] The above driving motor (210) is supported on the step portion (313), and the shaft of the driving motor (210) passes through the first bar connecting portion (314a), and one end of the rotating bar (220) can be supported on the bottom surface of the first bar connecting portion (314a). In addition, the other end of the rotating bar (220) can be supported on the upper end of the second bar connecting portion (314).

[0151] The above filter member (320) can be accommodated inside the filter case (310).

[0152] The above filter member (320) may include a filter part (321) that filters foreign substances in the air and a filter frame (322) that supports the filter part (321).

[0153] The above filter unit (321) is made of, for example, a mesh material and may include a filter surface on which foreign substances accumulate.

[0154] The above filter frame (322) has a grid shape, and can be configured such that a plurality of first frames extending in the horizontal direction and a plurality of second frames extending in the vertical direction intersect each other to support the filter unit (321).

[0155] The above filter member (320) can move in conjunction with the rotating bar (220). In detail, the filter member (320) can include a second gear part (325a, 325b) that is interlocked with the first gear part (225a, 225b) of the rotating bar (220).

[0156] The first gear portion (225a, 225b) may include a plurality of gear teeth arranged in the circumferential direction of the rotating bar (220). The second gear portion (325a, 325b) may include a plurality of gear teeth to be interlocked with the first gear portion (225a, 225b).

[0157] The first gear portion (225a, 225b) may be positioned adjacent to the end of the rotating bar (220) and provided as a pair on both sides of the rotating bar (220). The second gear portion (325a, 325b) may be provided on the upper and lower sides of the filter frame (322), respectively, and configured as a pair.

[0158] The vertical length of the filter frame (322) may correspond to the vertical length of the rotating bar (220). In addition, the gap between the pair of first gear parts (225a, 225b) may correspond to the gap between the pair of second gear parts (325a, 325b).

[0159] The filter frame (322) can move along the circumference of the rotating bar (220) in the process of linking with the rotating bar (220). For example, the filter frame (322) can be deformed to orbit around the rotating bar (220). The filter unit (321) can be deformed together with the filter frame (322).

[0160] The above filter cleaning device (200) may include a driving motor (210) that provides driving force to rotate the rotating bar (220). For example, the driving motor (210) may be coupled to the upper end of the rotating bar (220).

[0161] The above driving motor (210) may be a bidirectional motor that drives in both directions.

[0162] The above driving motor (210) can be mounted on the filter case (310) and the suction case (240). In detail, the driving motor (210) can include a first fixing part (213a) supported on a step part (313) of the filter case (310) and a second fixing part (213b) supported on the upper end of the suction case (240).

[0163] The shaft of the above driving motor (210) is coupled to the above rotating bar (220), and the above rotating bar (220) can rotate by driving the above driving motor (210).

[0164] During the process of rotating the filter member (320), the filter part (321) can come into contact with the brush (244b) of the suction case (240) through the case opening (315) of the filter case (310). During the process of contact, foreign substances accumulated in the filter part (321) can be separated from the filter part (321) and fall downward.

[0165] The above suction case (240) may be located on the side of the first filter (300). The above suction case (240) may be understood as a configuration that forms a suction path of the dust bin (260) before foreign matter separated from the first filter (300) moves to the dust bin (260).

[0166] The above suction case (240) may include a first part (241) and a second part (242). The first and second parts (241, 242) may be combined with each other to form a suction path therein.

[0167] The first part (241) and the second part (242) may have a length corresponding to the vertical length of the first filter (300) or the vertical length of the rotating bar (220).

[0168] The first part (241) above includes a side facing the first filter (300), and the side can form a first opening (241a). The second part (242) can be coupled to the first opening (241a).

[0169] The first part (241) above includes a rear surface facing the dust bin (260), and the rear surface can form a mounting groove (241b) to which the third part (250) is coupled.

[0170] The second part (242) may be coupled to the side of the first part (241). The second part (242) may form a second opening (243) that opens toward the case opening (315) of the filter case (310). The second opening (243) may function as a suction opening through which foreign matter separated from the first filter (300) is sucked into the suction case (240).

[0171] The above second opening (243) can be formed to be long in the vertical direction corresponding to the case opening (315).

[0172] The second part (242) may include a case bar (244a) positioned in the second opening (243). The case bar (244a) may be coupled to the upper end of the second opening (243) and may extend downward to be connected to the lower end of the second opening (243).

[0173] The second part (242) may include a brush (244b) that can come into contact with the filter portion (321) of the first filter (300). The brush (244b) is provided on the case bar (244a) and may protrude from the case bar (244a) in a direction toward the filter member (320).

[0174] The above brush (244b) is provided in a lengthwise direction in the vertical direction of the case bar (244a) so that contact can be made over the entire area from the top to the bottom of the filter unit (321).

[0175] A third part (250) may be provided inside the first part (241) and the second part (242). The third part (250) may be understood as a “guide member” that guides air containing foreign substances introduced into the suction case (240) to be sucked into the dust bin (260).

[0176] The third part (250) may include a body (251) that is coupled to the mounting groove (241b) of the first part (241). The body (251) may include a coupling surface (252, see FIG. 13) that is coupled to a dust bin (260). A through hole (253) that transmits air sucked into the suction case (240) to the dust bin (260) may be formed in the coupling surface (252).

[0177] The above filter cleaning device (200) may include a dust bin (260) that stores foreign substances separated from the first filter (300). The dust bin (260) may be provided on the outlet side of the suction case (240).

[0178] The above dustbin (260) may include a first part (261) and a second part (262). The second part (262) is coupled to the first part (261), and a foreign matter storage space may be formed inside the first and second parts (261, 262).

[0179] For example, the first part (261) has a shape bent into an “L” shape and can form at least one wall of the foreign material storage space.

[0180] The second part (262) may be coupled to one side of the first part (261) and form at least one other wall of the foreign material storage space.

[0181] The second part (262) can be coupled to the suction case (240). In detail, the second part (262) can be coupled to the coupling surface (252) of the suction case (240).

[0182] The second part (262) may form a suction hole (263) that is fluidly connected to the through hole (253) of the joining surface (252). Air inside the suction case (240) may be sucked into the inside of the dust bin (260) through the through hole (253) and the suction hole (263).

[0183] The above dustbin (260) may include a cyclone part (265) that generates a cyclone flow to separate foreign substances in the air sucked into the dustbin (260). The cyclone part (265) has a funnel shape and may be mounted on the installation wall (266, see FIG. 14) of the second part (262).

[0184] A plurality of holes are formed on the outer surface of the cyclone section (265), and air flowing in a circumferential direction from the outside of the cyclone section (265) can flow into the internal space of the cyclone section (265) through the plurality of holes.

[0185] The above installation wall (266) defines the upper wall of the foreign material storage space and the upper part of the cyclone section (265) can be combined therewith.

[0186] The second part (262) may include a discharge hole (264) through which air is discharged after foreign substances are separated from the dust bin (260). The discharge hole (264) is formed at the upper portion of the second part (262), and air that has passed through the cyclone section (265) may flow upward through the installation wall (266) and then be discharged through the discharge hole (264).

[0187] The above filter cleaning device (200) may include a suction motor (270) coupled to the dust bin (260). The suction motor (270) may provide suction power to allow air containing foreign substances separated from the first filter (300) to be sucked into the dust bin (260).

[0188] The above suction motor (270) is coupled to the discharge hole (264) so ​​that air discharged from the discharge hole (264) can be sucked in.

[0189] Fig. 11 is a perspective view showing the configuration of the above-described rotating bar and filter member, Fig. 12 is a perspective view showing the filter member moving in conjunction when the above-described rotating bar rotates, Fig. 13 is a drawing showing the configuration of a flow path forming part provided inside the above-described suction case, and Fig. 14 is a cross-sectional view taken along line 14-14 of Fig. 1.

[0190] First, referring to FIGS. 11 and 12, when the driving motor (210) according to the embodiment of the present invention is driven, the rotating bar (220) connected to the driving motor (210) can rotate.

[0191] As the above-mentioned rotary bar (220) rotates, the filter member (320) can move in the outer circumferential direction of the rotary bar (220) in conjunction with the rotary bar (220). In detail, the first gear part (225a, 225b) provided on the rotary bar (220) and the second gear part (325a, 325b) provided on the filter member (320) can be interlocked by gear teeth.

[0192] According to the above gear linkage, the filter member (320) can be deformed and wrapped around the outer circumference of the rotating bar (220) and move in a horizontal direction (for example, in the left direction based on FIG. 12) at the rear of the rotating bar (220).

[0193] After the above driving motor (210) is driven for a certain period of time, it is driven in the opposite direction, and accordingly, the rotating bar (220) can rotate in the opposite direction.

[0194] When the above-mentioned rotating bar (220) rotates in the opposite direction, the filter member (320) located at the rear of the rotating bar (220) is wound along the outer circumference of the rotating bar (220) by the interlocking of the first and second gear parts and can perform a movement of moving in a horizontal direction (for example, in the left direction based on FIG. 12) in front of the rotating bar (220).

[0195] The forward and reverse movements of the filter member (320) can be performed repeatedly.

[0196] In the process of the filter member (320) being wound in the outer circumferential direction of the rotating bar (220), the brush (244b) located on the side of the rotating bar (220) can come into contact with the filter part (321) of the filter member (320).

[0197] The above brush (244b) can separate foreign substances from the filter unit (321) by scraping off foreign substances accumulated in the filter unit (321). Then, the separated foreign substances can fall to the lower portion of the first filter (300).

[0198] Meanwhile, the suction motor (270) can be driven, and air containing foreign substances can flow into the interior of the suction case (240) through the case opening (315) of the filter case (310) and the second opening (243) of the suction case (240) by the suction force generated by the suction motor (270).

[0199] And, air can be introduced into the dust bin (260) through the through hole (253) of the third part (250). At this time, air can be introduced into the dust bin (260) through the suction hole (263) of the dust bin (260).

[0200] The air sucked in from the above suction hole (263) forms a cyclone flow (solid arrow in Fig. 14) along the outer surface of the cyclone section (265), and during this process, foreign substances (dotted arrow in Fig. 14) contained in the air can fall due to their own weight. The fallen foreign substances can be stored in the foreign substance storage space of the dust bin (260).

[0201] The air from which foreign matter has been separated flows into the inner space of the cyclone section (265), flows upwards, passes through the wall (266), and can be sucked into the suction motor (270).

[0202] A wall opening (266a) is formed in the wall (266), and the upper end of the cyclone section (265) can be connected to the wall opening (266a). Air can flow from the upper end of the cyclone section (265) to the upper space of the wall (266) through the wall opening (266a).

[0203] The air discharged from the above suction motor (270) can be discharged to the outside of the ventilation device (10). At this time, for example, the first fan module (185) can be driven, and the air can pass through the heating element (170) and the first fan module (185) and be discharged to the outdoor space from the second flange (162).

[0204] The above filter cleaning device (200) can be operated in a cleaning mode. For example, the ventilation device (10) can be operated in a normal ventilation mode or a cleaning mode.

[0205] In the general ventilation mode of the above ventilation device (10), as shown in FIG. 4, the first and second fan modules (185, 186) are driven to generate an exhaust flow from the first flange (161) toward the second flange (162) and an air supply flow from the third flange (163) toward the fourth flange (164).

[0206] In the cleaning mode of the ventilation device (10), the driving motor (210) and the suction motor (270) are driven, and the filter cleaning operation in the first filter (300) and the foreign matter storage operation in the dust bin (260) can be performed. At this time, as described above, the first fan module (185) can be driven together.

[0207] Fig. 15 is a perspective view showing the connection between a ventilation device and a plurality of ducts according to an embodiment of the present invention.

[0208] Referring to Fig. 15, a plurality of ducts (D1, D2, D3, D4) may be connected to the housing (100) of the ventilation device (10). The plurality of ducts may include an internal intake duct (D1), an exhaust duct (D2), an external air intake duct (D3), and a supply duct (D4).

[0209] The above-described intake duct (D1) and supply duct (D4) may be connected to a first side portion (113a) among the multiple side portions of the housing (100). The outside air intake duct (D3) and exhaust duct (D2) may be connected to a second side portion (113b) among the multiple side portions of the housing (100). The first side portion (113a) and the second side portion (113b) may form surfaces facing each other.

[0210] The first connecting device (190a) is mounted at a first mounting position, and the first flange (161) can protrude from the first side portion (113a) and be connected to the intake duct (D1). In addition, the first plate (191) of the first connecting device (190a) can form at least a part of the first side portion (113a), and the second plate (192) of the first connecting device (190a) can form at least a part of the third side portion (113c).

[0211] The third side portion (113c) connects the first side portion (113a) and the second side portion (113b), and can be arranged vertically with respect to the first and second side portions (113a, 113b).

[0212] The second connecting device (190b) is mounted at the first mounting position, and the third flange (163) can protrude from the second side portion (113b) and be connected to the outside air intake duct (D3). In addition, the first plate (191) of the second connecting device (190b) can form at least a part of the second side portion (113b), and the second plate (192) of the second connecting device (190b) can form at least a part of the third side portion (113c).

[0213] That is, when the first connecting device (190a) is mounted at the first mounting position and the second connecting device (190b) is mounted at the first mounting position, the first flange (161) and the third flange (163) can be arranged to face each other.

[0214] Meanwhile, outdoor air sucked from the second side (113b) of the ventilation device (10) through the third flange (163) can be filtered by the first filter (300) and pass through the heating element (170). In addition, the first filter (300) can be automatically cleaned by the filter cleaning device (200).

[0215] Fig. 16 is a plan view showing another example of the configuration of a ventilation device according to an embodiment of the present invention, and Fig. 17 is a perspective view showing the connection between the ventilation device of Fig. 16 and a plurality of ducts.

[0216] Referring to FIGS. 16 and 17, the ventilation device (10a) according to an embodiment of the present invention may include a first connecting device (190a) mounted at a second mounting position.

[0217] In the second mounting position, the first plate (191) of the first connecting device (190a) may constitute at least a portion of a third side portion (113c) among the multiple side portions (113) of the housing (100). In addition, the first flange (161) provided on the first plate (191) may be arranged to protrude in the Y direction from the third side portion (113c).

[0218] That is, if the first connecting device (190a) in FIG. 1 is flipped upside down and mounted on the housing (100), it can have the same appearance as the first connecting device (190a) in FIG. 16.

[0219] A plurality of ducts (D1', D2, D3, D4) may be connected to the housing (100) of the above ventilation device (10). The plurality of ducts may include an internal intake duct (D1'), an exhaust duct (D2), an external air intake duct (D3), and a supply duct (D4).

[0220] The above-mentioned air supply duct (D4) may be connected to a first side portion (113a) among the multiple side portions of the housing (100). The outside air intake duct (D3) and the exhaust duct (D2) may be connected to a second side portion (113b) among the multiple side portions of the housing (100). The first side portion (113a) and the second side portion (113b) may form surfaces facing each other.

[0221] The above-mentioned suction duct (D1') can be connected to the third side portion (113c).

[0222] In the same manner as in Fig. 17, the first connecting device (190a) is mounted at the second mounting position, and the first flange (161) can protrude from the third side portion (113c) and be connected to the intake duct (D1'). In addition, the first plate (191) of the first connecting device (190a) can form at least a part of the third side portion (113c), and the second plate (192) of the first connecting device (190a) can form at least a part of the first side portion (113a).

[0223] In addition, in the same manner as in Fig. 17, the second connecting device (190b) is mounted at the first mounting position, which is the same as described in Fig. 15.

[0224] That is, when the first connecting device (190a) is mounted at the second mounting position and the second connecting device (190b) is mounted at the first mounting position as shown in FIG. 17, the first flange (161) can protrude in the Y direction from the third side portion (113c), and the third flange (163) can protrude from the second side portion (113b).

[0225] Let me suggest another example.

[0226] Although not specifically disclosed in the drawing, when the first connecting device (190a) is mounted in the first mounting position as in FIG. 5 and the second connecting device (190b) is mounted in the second mounting position, the first flange (161) may protrude from the first side portion (113a) and the third flange (163) may protrude from the third side portion (113c).

[0227] In this case, outdoor air can be sucked in from the front of the ventilation device (10) through the third flange (163) and introduced into the heating element (170) through the first filter (300). In addition, the first filter (300) can be automatically cleaned by the filter cleaning device (200).

[0228] Let me suggest another example.

[0229] When the first connecting device (190a) is mounted in the second mounting position as shown in FIG. 17 and the second connecting device (190b) is also mounted in the second mounting position, both the first flange (161) and the third flange (163) may protrude in the Y direction from the third side surface (113c).

[0230] The present invention relates to a ventilation device, and comprises a filter cleaning device capable of automatically cleaning a filter installed on an air passage, thereby reducing filter contamination and improving filter performance. Therefore, the invention has significant industrial applicability.

Claims

1. A housing that accommodates a heat transfer element for heat exchange between indoor air and outdoor air, and a filter and fan module; A plurality of duct flanges provided in the above housing and connected to ducts for exhausting indoor air and supplying outdoor air; and A ventilation device including a filter cleaning device provided on one side of the filter and having a dust bin for storing foreign matter separated from the filter.

2. In paragraph 1, The above filter cleaning device is a ventilation device including a brush that removes foreign substances accumulated on the filter.

3. In paragraph 1, The above filter cleaning device is a ventilation device including a suction motor that provides suction power to move foreign matter separated from the filter to the dust bin.

4. In paragraph 1, A ventilation device comprising a filter case and a filter member mounted inside the filter case, and further comprising a driving motor for moving the filter member.

5. In paragraph 4, A ventilation device further comprising a rotating bar that is connected to the driving motor and rotates and extends in the longitudinal direction of the filter member, wherein the filter member is provided to be deformable so as to move along the outer surface of the rotating bar.

6. In paragraph 5, A ventilation device including a first gear part provided on the above-mentioned rotating bar and a second gear part provided on the above-mentioned filter member and linked to the first gear part.

7. In paragraph 6, A ventilation device in which the first gear portion is provided adjacent to both ends of the rotating bar, and the second gear portion is provided adjacent to both ends of the filter member.

8. In paragraph 4, A case opening is formed on one side of the above filter case, The above filter cleaning device is a ventilation device including a brush provided so as to be in contact with the filter surface of the filter member through the case opening.

9. In paragraph 8, A ventilation device in which the first direction length of the filter member or the first direction length of the case opening corresponds to the first direction length of the brush.

10. In paragraph 1, The above filter cleaning device includes a suction case forming a suction opening through which foreign matter separated from the filter is sucked, A ventilation device comprising a case bar having a brush disposed in the suction opening and in contact with the filter, wherein the suction case is disposed in the suction opening.

11. In paragraph 10, The above suction case is, A ventilation device comprising a first part coupled to the dust bin, a second part provided with the case bar, and a guide member arranged in the internal space of the first and second parts to guide air to the dust bin.

12. In paragraph 11, A ventilation device wherein the first part is positioned to face the filter and includes a first side forming an opening, and the second part is coupled to the opening on the side and forms the suction opening.

13. In paragraph 11, A ventilation device in which the guide member includes a coupling surface coupled to one side of the dust bin, and the coupling surface forms a through hole that transmits air from the suction case to the dust bin.

14. In paragraph 1, The above dustbin is a ventilation device including a suction port through which air containing foreign substances separated from the filter is introduced, and a cyclone part having a funnel shape to separate foreign substances from the air sucked in through the suction port.

15. In paragraph 1, The above plurality of duct flanges include a first flange for introducing indoor air, a second flange for discharging the indoor air, a third flange for introducing outdoor air, and a fourth flange for supplying the outdoor air to the indoor space. The above filter cleaning device is a ventilation device configured to clean the filter provided on the inside of the third flange.

16. A housing that accommodates a heat transfer element and a fan module for heat exchange between indoor air and outdoor air; A plurality of duct flanges provided in the above housing, including a first flange for introducing indoor air, a second flange for discharging the indoor air, a third flange for introducing outdoor air, and a fourth flange for supplying the outdoor air to the indoor space; A filter provided on the inside of the third flange to filter outdoor air introduced into the third flange, the filter including a filter case and a filter member that is movably mounted on the filter case; A rotating bar having an outer surface that guides the movement of the above filter member; A driving motor that provides driving force to the above rotating bar; A brush that comes into contact with the filter member and separates foreign substances from the filter when the filter member moves along the outer surface of the rotating bar; and A ventilation device including a dust bin for storing the separated foreign matter.

17. In paragraph 16, It includes a first gear part provided on the above rotating bar and a second gear part provided on the above filter member and linked to the first gear part, A ventilation device in which the filter member is deformed and moves along the outer surface of the rotating bar during the process in which the first and second gears are linked.

18. In paragraph 17, A ventilation device in which the filter member is deformed to orbit around the rotating bar.

19. In paragraph 16, A suction motor that provides suction power to allow foreign matter separated from the filter to be introduced into the dust bin; and A ventilation device including a cyclone section that is provided inside the dustbin and generates cyclone flow by driving the suction motor.

20. In paragraph 16, A ventilation device in which the filter case includes a case opening that opens toward the brush, and the filter member contacts the brush through the case opening at a position that is deformed along the outer circumferential surface of the rotating bar.

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