JP6768072B2 - Air cleaner - Google Patents

Description

The present invention relates to an air purifier provided with a cleaning device for cleaning the filter.

Patent Document 1 discloses a conventional air purifier. This air purifier has a housing that opens a suction port and an air outlet. An air passage connecting the suction port and the air outlet is provided in the housing, and a blower is arranged in the air passage. A pre-filter (filter) is arranged facing the suction port.

When the operation of the air purifier having the above configuration is started, the blower is driven and the air in the living room is sucked from the suction port. The air sucked from the suction port is sent out from the air outlet after the dust is collected by the pre-filter. As a result, the air in the living room can be cleaned.

In recent years, there has been an increasing demand for an air purifier equipped with a cleaning device for cleaning the pre-filter. Patent Document 2 discloses a cleaning device for cleaning a filter arranged facing an intake port of a projector. This cleaning device includes a supply roll, a take-up roll, a brush body, a supply roll motor, a take-up roll motor, a brush body motor, and a dust collection box.

A sheet-shaped filter is wound around the supply roll. The take-up roll is rotated by the drive of the take-up roll motor, and winds up the filter drawn from the supply roll. The brush body has brush bristles formed radially on the shaft body, and when the take-up roll is rotated, the brush bristles are rotated by the drive of the brush body motor, and the brush bristles rub the filter to remove dust. The dust collection box collects dust removed from the filter by the brush body. The feed roll is rotationally driven by a motor for the feed roll to rewind the filter wound on the take-up roll. This removes dust on the filter and cleans the filter.

Japanese Unexamined Patent Publication No. 2009-666666 (pages 8, 9, and 1) Japanese Patent No. 5627066 (pages 6, 7, 1, 1 and 4)

However, according to the cleaning device of Patent Document 2, a supply roll motor is provided separately from the take-up roll motor. Therefore, there is a problem that the number of parts of the cleaning device increases, and if the cleaning device is provided in the air purifier, the manufacturing cost of the air purifier increases.

An object of the present invention is to provide an air purifier capable of reducing manufacturing costs.

In order to achieve the above object, the present invention comprises a housing that opens a suction port and an air outlet, an air passage that connects the suction port and the air outlet, a blower arranged in the air passage, and the above. In an air purifier equipped with a filter arranged facing the suction port and a cleaning device for cleaning the filter.
A supply roll in which the filter is wound in the form of a sheet, a winding roll for winding the filter, a drive motor for rotationally driving the winding roll, and the supply when the winding roll is wound. It is characterized by having an urging portion having a mainspring that urges the rotation axis of the roll in the direction opposite to the winding direction, and a brush body that slides on the filter when the winding roll is rotated.

Further, according to the present invention, in the air purifier having the above configuration, the supply roll is detachably arranged on the housing, the urging portion locks the shaft portion of the supply roll, and one end of the Zenmai is attached. The first rotating body is attached, the second rotating body to which the other end of the Zenmai is attached and the rotation in the direction of reducing the urging force of the Zenmai is restricted, and a handle for rotating the second rotating body. Then it is preferable.

Further, according to the present invention, in the air purifier having the above configuration, the urging portion is arranged between the handle and the second rotating body to rotate the handle in a direction of reducing the urging force of the mainspring. It is preferable that the connecting member is provided with a regulating member, and the connecting member rotates integrally with the second rotating body.

Further, according to the present invention, in the air purifier having the above configuration, the filter has bar members extending in the axial direction at both ends in the winding direction, and the supply roll and the shaft forming the shaft portion of the winding roll are formed. It has a core material having a groove portion extending in the axial direction and having an inclined inner wall surface facing the core material, and a sleeve made of an elastic body having a C-shaped cross section that fits the core material, and the bar material is provided by the sleeve and the groove portion. It is preferable to elastically sandwich the.

Further, in the air purifier having the above configuration, it is preferable that the core material is made of metal and the sleeve is made of a resin molded product in the present invention.

Further, in the air purifier having the above configuration, the present invention has a main body portion in which the housing is arranged with the blower, and a cover portion in which the housing is detachably arranged with respect to the main body portion and the suction port is opened. It is preferable that the drive motor is arranged in the main body portion and the supply roll and the take-up roll are arranged in the cover portion.

According to the present invention, an urging portion having a drive motor for rotationally driving a winding roll for winding a filter and a mainspring for urging the rotating shaft of a supply roll in the opposite direction to the winding direction when the winding roll is wound. And have. As a result, it is not necessary to separately provide a conventional supply roll motor for rotating the supply roll in the direction opposite to the winding direction of the take-up roll, in addition to the drive motor. Therefore, the manufacturing cost of the air purifier can be reduced.

Front view showing the air purifier of the first embodiment of the present invention Side sectional view showing an air purifier according to the first embodiment of the present invention. An exploded perspective view showing a cleaning device for the air purifier according to the first embodiment of the present invention. Top view showing the pre-filter of the air purifier of 1st Embodiment of this invention. Side sectional view of the supply roll of the cleaning device for the air purifier according to the first embodiment of the present invention. A perspective view showing the inside of the take-up roll, the dust collector, and the gear unit of the cleaning device of the air purifier according to the first embodiment of the present invention. Enlarged perspective view of the inside of the gear unit of the cleaning device for the air purifier according to the first embodiment of the present invention. An exploded perspective view of an urging portion of the cleaning device of the air purifier according to the first embodiment of the present invention. Side view before the supply roll of the support member of the cover part of the air purifier of the second embodiment of the present invention is attached. Side view after the supply roll of the support member of the cover part of the air purifier of the second embodiment of the present invention is attached. Side view before the supply roll of the support member of the cover portion of the air purifier according to the third embodiment of the present invention is attached. Side view after the supply roll of the support member of the cover part of the air purifier of the third embodiment of the present invention is attached. Top view of the pre-filter of the air purifier according to the fourth embodiment of the present invention. Perspective view of the holding member of the air purifier according to the fifth embodiment of the present invention.

<First Embodiment>
An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a front view and a side sectional view of the air purifier of the first embodiment. The arrow S indicates the flow of air. The air purifier 1 has a housing 2 that is installed on the floor or the like in a living room by opening the suction ports 3 and the air outlets 4 and 5. The housing 2 has a main body portion 20 and a cover portion 21. The cover portion 21 is detachably arranged with respect to the back surface of the main body portion 20 and opens the suction port 3. The main body 20 opens the air outlets 4 and 5 to the upper front surface and the upper surface, respectively.

Wind direction plates 14 and 15 for varying the wind direction are provided at the air outlets 4 and 5, respectively. The wind direction plate 14 is made of a flat plate, and is rotatably supported in the vertical direction by a rotation shaft portion (not shown) provided on the wind direction plate 14. A plurality of vertical louvers 14a are vertically installed on the lower surface of the wind direction plate 14 side by side in the left-right direction. The vertical louvers 14a at both ends are inclined outward in the left-right direction toward the front.

The wind direction plate 15 is made of a flat plate and is rotatably supported in the vertical direction by a rotation shaft portion 15b provided at the front portion of the wind direction plate 15. A plurality of vertical louvers 15a are vertically installed on the lower surface of the wind direction plate 15 side by side in the left-right direction. The vertical louvers 15a at both end ends are inclined outward in the left-right direction toward the rear.

The wind direction plates 14 and 15 close the outlets 4 and 5 when the operation of the air purifier 1 is stopped, and open the outlets 4 and 5 when the air purifier 1 is operated.

An air passage 8 that connects the suction port 3 and the air outlets 4 and 5 is provided in the housing 2. In the air passage 8, the pre-filter 6 (filter), the deodorizing filter 7, the dust collecting filter 9, the humidifying section 200, and the blower are in order from the suction port 3 toward the outlets 4 and 5 (from the upstream to the downstream of the air flow). 10. The ion generator 11 and the damper 12 are provided.

The air passage 8 has a first branch passage 8a and a second branch passage 8b that branch downstream of the ion generator 11. The first branch passage 8a and the second branch passage 8b communicate with the outlets 4 and 5, respectively, and the cross-sectional area of the air flow path of the first branch passage 8a is based on the cross-sectional area of the air flow path of the second branch passage 8b. Is also getting smaller.

The damper 12 is formed in a thin plate shape and is rotatably supported in the vertical direction by the rotating shaft portion 12a. The damper 12 can rotate in the opening direction (counterclockwise direction in FIG. 2) from the closed position (see FIG. 2) of the first branch passage 8a. The damper 12 changes the air volume balance of the first branch passage 8a and the second branch passage 8b.

The blower 10 is formed by a centrifugal fan such as a sirocco fan driven by a motor 10a, and takes in air in the axial direction and exhausts air in the circumferential direction.

The pre-filter 6 is formed of a sheet-like mesh such as polypropylene, and is arranged on the cover portion 21 facing the suction port 3. The pre-filter 6 can collect large dust in the intake air.

The deodorizing filter 7 is formed in a honeycomb shape and can adsorb odorous components in the air to deodorize the air.

The dust collection filter 9 is composed of a HEPA filter, and a frame material (not shown) is welded by hot melt so as to cover the filter medium (not shown). The dust collection filter 9 can collect fine dust in the air and fine particles such as PM2.5 having a particle size smaller than a predetermined particle size (for example, 3 μm).

The humidifying section 200 immerses the lower part of the humidifying filter 202 in the water in the tray 201 to humidify the air passing through the humidifying filter 202. As a result, humidified air is sent out from the outlets 4 and 5.

The ion generator 11 has an ion generation surface 11a that generates ions by applying a high voltage voltage, and the ion generation surface 11a faces the air passage 8. A voltage composed of an AC waveform or an impulse waveform is applied to the ion generation surface 11a. Generates positive ions consisting mainly ^H + _(H 2 O) m when the applied voltage of the ion generating surface 11a is a positive voltage, primarily in the case of negative voltage _O ² - negative ions consisting of _(H 2 O) n appear. Here, m and n are integers. H ⁺ _(H 2 O) m and _{^{O 2 - (H 2 O)}} n surrounds these aggregated on the surface of airborne bacteria and odorous components in the air.

Then, as shown in equation (1) to (3), which is the active species [· OH] (hydroxyl radical) and _H 2 _{O 2} (hydrogen peroxide) to generate aggregated on the surface of such microorganisms by a collision Destroy airborne bacteria. Here, m'and n'are integers. Therefore, by generating positive ions and negative ions and sending them out from the outlets 4 and 5, it is possible to sterilize the living room and remove the odor.

_{^{H + (H 2 O) m}} + O 2 - (H 2 O) n → · OH + 1 / 2O 2 + (m + n) H 2 O ··· (1)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ 2 ・ OH + O ₂ + (m + m'+ n + n') H ₂ O ・ ・ ・ (2)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ H ₂ O ₂ + O ₂ + (m + m'+ n + n') H ₂ O ... (3)

An operation unit 19 is provided on the front portion of the upper surface of the main body unit 20. The operation unit 19 has a plurality of buttons (not shown), and the operation of the air purifier 1 is set by the operation of the user. By operating each button, it is possible to change the air volume of the air sent out from the air outlets 4 and 5, the air blowing direction, and the like.

Further, the cover portion 21 is provided with a cleaning device 30 for cleaning the pre-filter 6. FIG. 3 shows an exploded perspective view of the cleaning device 30. The cleaning device 30 includes a supply roll 40, a take-up roll 50, a gear unit 60, an urging unit 70, a brush body 80, a dust collecting unit 90, and a drive motor 100 (see FIG. 2).

The supply roll 40 and the take-up roll 50 are arranged at the upper part and the lower part of the cover portion 21, respectively, and hold both ends of the prefilter 6. The pre-filter 6 is wound around the supply roll 40 when the cleaning device 30 is stopped, is sent out from the supply roll 40 when the cleaning device 30 is driven, and is wound around the winding roll 50.

The supply roll 40 has a shaft 41 extending in the left-right direction, and caps 48 are fitted on both ends of the shaft 41. The cap 48 is rotatably supported by a support member 49 arranged at the upper end of the inner surface of the cover portion 21. As a result, the supply roll 40 is rotatably arranged on a rotation axis extending in the left-right direction. Further, one end (right end) of the supply roll 40 is connected to the urging portion 70 via the cap 48.

The take-up roll 50 has a shaft 51 extending in the left-right direction, and caps 58 are fitted on both ends of the shaft 51. The left and right caps 58 are rotatably supported by a support member 59 and a gear unit 60 arranged at the lower end of the inner surface of the cover portion 21, respectively. As a result, the take-up roll 50 is rotatably arranged on a rotation axis extending in the left-right direction.

FIG. 4 shows a plan view of the prefilter 6. The pre-filter 6 has a bar material 6a extending in the left-right direction at both ends of the winding direction W and being held by the supply roll 40 and the winding roll 50. Further, the pre-filter 6 has a ventilation portion 6b arranged facing the suction port 3 when the cleaning device 30 is stopped, and a storage portion 6c sent out from the supply roll 40 when the cleaning device 30 is driven.

A symbol 6g that can be visually recognized from the suction port 3 is provided on the storage portion 6c so as to be distinguished from the ventilation portion 6b. In this embodiment, the red letters "cleaning" are used as the design 6g. The design 6g is not particularly limited, and may be, for example, a striped pattern having a color different from that of the ventilation portion 6b.

FIG. 5 shows a side sectional view of the supply roll 40. Since the winding roll 50 has the same configuration as the supply roll 40, the supply roll 40 will be described as a representative. The shaft 41 forming the shaft portion of the supply roll 40 has a core material 41a and a sleeve 41d.

The core material 41a is made of an extruded product of a metal such as aluminum having a C-shaped cross section, and has a groove portion 41b extending in the axial direction on the peripheral surface. The facing inner wall surface 41c of the groove 41b is inclined, and the width of the groove 41b in the circumferential direction is wider on the outer peripheral side than on the inner peripheral side. The peripheral surface of the bar material 6a of the prefilter 6 is supported by the inner wall surface 41c of the groove portion 41b.

The sleeve 41d is formed of a resin molded product having a C-shaped cross section and has an opening 41e extending in the axial direction, and is fitted onto the core material 41a. The pre-filter 6 in which the bar material 6a is supported on the groove 41b is inserted into the opening 41e. The width of the opening 41e of the sleeve 41d is smaller than the diameter of the bar material 6a, and the bar material 6a supported by the core material 41a is prevented from coming off. At this time, both ends of the sleeve 41d in the circumferential direction elastically press the bar material 6a, and the groove portion 41b of the core material 41a and the sleeve 41d elastically sandwich the bar material 6a.

Further, when a force is applied in the direction in which the opening 41e of the sleeve 41d is widened (the left-right direction in FIG. 5), the sleeve 41d is elastically deformed. The bar material 6a of the pre-filter 6 can be attached to and detached from the shaft 41 via the widened opening 41e. Similarly, the bar material 6a at the lower end of the prefilter 6 can be attached to and detached from the shaft 51. As a result, the pre-filter 6 can be easily removed from the cleaning device 30 and the pre-filter 6 can be replaced.

In FIG. 3, the brush body 80 is arranged in a dust collecting portion 90 detachably attached to the cover portion 21. The brush body 80 has a shaft 81 supported at both ends in the axial direction by the dust collecting portion 90, and rotates when the cleaning device 30 is driven to remove dust on the prefilter 6. A spur gear 68 is provided at one end (right end) of the shaft 81, and brush bristles 82 are spirally planted at predetermined intervals on the peripheral surface of the shaft 81.

The dust collecting portion 90 has a lid portion 91, a container 92, and a comb portion 93, and is detachably arranged with respect to the cover portion 21. The container 92 is made of a transparent resin, and the upper surface is opened to support the brush body 80 on both sides. The lid portion 91 opens an opening 91a that opens over the left and right ends, and covers the upper surface of the container 92. The brush bristles 82 of the brush body 80 are exposed to the outside through the opening 91a. The comb portion 93 is formed so as to extend in the left-right direction, and is arranged in the container 92 with the tooth tips facing upward. The brush bristles 82 of the rotating brush body 80 come into contact with the tooth tips of the comb portion 93. Dust adhering to the brush bristles 82 is removed from the brush bristles 82 by the comb portion 93.

The dust removed from the pre-filter 6 by the brush body 80 and the dust removed from the brush body 80 by the comb portion 93 are collected in the container 92. At this time, since the container 92 is made of a transparent resin, the user can easily grasp the amount of dust in the container 92.

The drive motor 100 (see FIG. 2) is arranged in the main body 20 of the housing 2, and the rotation shaft (not shown) of the drive motor 100 projects rearward from the back surface of the main body 20.

Further, a pressing member 22 is arranged in front of the pre-filter 6 with a predetermined gap. The pressing member 22 is detachably attached to the cover portion 21. The pressing member 22 has a rectangular frame 22a made of a synthetic resin such as ABS. Inside the frame 22a, ribs 22b extending in the vertical direction and a plurality of ribs 22c extending in the horizontal direction and arranged side by side in the vertical direction (three in the present embodiment) are provided. As a result, the pressing member 22 has a plurality of stages and a plurality of rows of windows. The presser member 22 can stably arrange the pre-filter 6 along the suction port 3 to prevent the pre-filter 6 from loosening due to the suction air flow.

A magnet 23 is provided at the center of the right end of the frame 22a of the pressing member 22. A Hall element (not shown) is provided at a position of the main body 20 facing the magnet 23. The air purifier 1 can determine whether or not the cover portion 21 is attached to the main body portion 20 by the Hall element. Then, when the air purifier 1 determines that the cover portion 21 is not attached to the main body portion 20, the operation of the blower 10 is prohibited. As a result, the blowing operation of the air purifier 1 in a state where the cover portion 21 is not attached to the main body portion 20 is avoided.

Further, the gear unit 60 and the urging portion 70 are arranged at one end (right end) of the cover portion 21. Therefore, a space SP is formed between the gear unit 60 and the urging portion 70 on the inner surface of the cover portion 21. A tape-shaped member 300 containing information on the instruction manual for the air purifier 1 is attached to the space SP. The above information includes information on how to remove the pre-filter 6 from the cleaning device 30, and information on how to operate the handle 73 of the urging unit 70, which will be described later.

As a result, when the cover portion 21 is removed from the main body portion 20, the user visually recognizes the above information, and easily removes the prefilter 6 from the cleaning device 30 and operates the handle 73 of the urging portion 70. Can be recognized. Therefore, the convenience of the air purifier 1 can be improved.

FIG. 6 is a perspective view showing the inside of the take-up roll 50, the dust collector 90, and the gear unit 60 of the cleaning device 30. FIG. 7 is an enlarged perspective view of the inside of the gear unit 60. The gear unit 60 includes a cap gear 61 (first crossing shaft gear), a cap gear 62 (second crossing shaft gear), a spur gear 63 (first parallel shaft gear), and a spur gear 64 (second parallel shaft gear). The gear 65, the spur gear 66, and the spur gear 67 are contained in the housing 60a (see FIG. 3). The housing 60a is screwed to the cover portion 21 (see FIG. 3).

The bevel gear 61 is arranged in the front-rear direction in the axial direction, and has a fitting hole 61a on the shaft that fits into the rotating shaft (not shown) of the drive motor 100 (see FIG. 2). The bevel gear 62 is arranged in the left-right direction in the axial direction and meshes with the bevel gear 61. The spur gear 63 is integrally formed concentrically with the bevel gear 62.

The shaft portion 63a of the spur gear 63 has a fitting hole (not shown) into which the convex portion 58a (see FIG. 3) of the cap 58 is fitted. As a result, the spur gear 63 and the bevel gear 62 are connected to the take-up roll 50.

The spur gear 64 is arranged below the spur gear 63 and meshes with the spur gear 63. The internal gear 65 is provided integrally with the spur gear 64. The spur gear 66 meshes with the internal gear 65. The spur gear 67 is integrally formed concentrically with the spur gear 66. The spur gear 68 provided at one end of the brush body 80 meshes with the spur gear 67.

By driving the drive motor 100, the take-up roll 50 rotates via the bevel gear 61 and the bevel gear 62. Further, the rotation of the spur gear 63 integrated with the bevel gear 62 causes the brush body 80 to rotate via the spur gear 64, the internal gear 65, the spur gear 66, the spur gear 67, and the spur gear 68. Since the spur gear 63 integrated with the bevel gear 62 and the spur gear 64 connected to the brush body 80 mesh with each other, the brush body 80 arranged in parallel with the take-up roll 50 can be easily rotated.

At this time, since the internal gear 65 integrated with the spur gear 64 is provided, the spur gear 68 on the rotating shaft of the brush body 80 is placed between the rotating shaft (shaft portion 63a) of the spur gear 63 and the rotating shaft of the spur gear 64. Can be placed in. As a result, the brush body 80 that slides on the pre-filter 6 on the take-up roll 50 can be easily arranged close to the take-up roll 50.

The bevel gears 61 and 62 may be cross shaft gears. Further, each spur gear may be a parallel shaft gear, and a helical gear or the like may be used.

FIG. 8 shows an exploded perspective view of the urging portion 70 of the cleaning device 30. The urging portion 70 has a rotating body 71 (first rotating body) and a rotating body 72 (second rotating body) housed in housings 78 and 79 that are screwed to each other. A holding portion 71a is projected from one end surface of the rotating body 71 in the axial direction, and a groove portion 71b is provided on the other end surface. A locking portion 48a provided on the cap 48 is fitted in the groove portion 71b. As a result, the rotating body 71 locks the shaft portion of the supply roll 40, and the supply roll 40 is connected to the urging portion 70.

The rotating body 72 houses the mainspring 75 inside the rotating body 71 side. One end (inner end) of the mainspring 75 is sandwiched by the sandwiching portion 71a of the rotating body 71, and the other end (outer end) is mounted on the inner peripheral surface of the rotating body 72. When the rotating body 71 rotates clockwise with respect to the rotating body 72 when viewed from the right side (viewed from the direction of arrow A), the urging force of the mainspring 75 increases. That is, when the rotating body 72 rotates clockwise with respect to the rotating body 71 when viewed from the direction of the arrow A, the urging force of the mainspring 75 becomes small.

A plurality of claws 72a are provided at predetermined intervals on the outer (right side) outer peripheral surface of the rotating body 72 in the axial direction. A stopper 77 is pivotally supported in the housing 78, and the stopper 77 is urged by a torsion coil spring 77a in a direction of pressing the rotating body 72. As a result, the rotating body 72 is restricted from rotating clockwise to reduce the urging force of the mainspring 75 when viewed from the direction of arrow A by engaging the stopper 77 with the claw 72a.

An opening 78a opens on the right side surface of the housing 78, and a cylindrical handle 73 is arranged so as to cover the opening 78a. A collar portion 73a having a diameter larger than that of the opening 78a is arranged in the housing 78. The handle 73 and the flange portion 73a are screwed to the outer wall of the housing 78 with a predetermined gap in the axial direction via the opening 78a. As a result, the handle 73 is rotatably attached to the housing 78.

In the housing 78, the connecting member 74 is arranged inside (left side) in the axial direction of the collar portion 73a. A compression spring 76 is arranged between the rotating body 72 and the connecting member 74, and the connecting member 74 is urged to the outside (right side) in the axial direction. A plurality of notches 74c are formed at predetermined intervals on the peripheral surface of the connecting member 74. A plurality of radially extending ribs 72c that fit into the notch 74c are formed at the outer end of the rotating body 72 in the axial direction. As a result, the connecting member 74 rotates integrally with the rotating body 72.

The connecting member 74 is formed to have a larger diameter than the flange portion 73a and the opening portion 78a. A plurality of inclined portions 74a and a plurality of ribs 74b are provided at predetermined intervals on the outer (right side) surface of the connecting member 74 in the axial direction. The inclined portion 74a is gradually formed higher in the counterclockwise direction when viewed from the direction of arrow A. The rib 74b extends radially adjacent to the top of the inclined portion 74a and is formed higher than the top.

Further, a plurality of radially extending ribs 73b that engage with the ribs 74b are provided on the inner surface (left side surface) of the flange portion 73a in the axial direction. A protrusion (not shown) that engages with the rib 74b is provided on the inner wall surface of the housing 78.

When the handle 73 is rotated clockwise when viewed from the direction of arrow A, the rib 74b engages with the rib 73b and engages with the protrusion of the housing 78. As a result, the rotation of the handle 73 is restricted.

On the other hand, when the handle 73 is rotated counterclockwise when viewed from the direction of arrow A, the rib 73b slides on the inclined portion 74a. Therefore, the connecting member 74 moves inward in the axial direction against the urging force of the compression spring 76, and the rib 74b is axially separated from the protrusion of the housing 78. As a result, the handle 73 can be rotated, the rib 74b engages with the rib 73b, and the rotating body 72 rotates in a direction in which the urging force of the mainspring 75 is increased. That is, the rotating body 72 is rotated by the handle 73.

When the operation of the air purifier 1 having the above configuration is started by the operation of the operation unit 19, it is determined whether or not the cover unit 21 is attached to the main body unit 20. When it is determined that the cover portion 21 is attached to the main body portion 20, the blower 10 and the ion generator 11 are driven. As a result, the air in the living room is sucked from the suction port 3 and circulates in the air passage 8. At this time, the pre-filter 6 collects large dust in the air. Further, the deodorizing filter 7 deodorizes the air, and the dust collecting filter 9 collects fine dust in the air and fine particles such as PM2.5.

Then, the ions generated by the ion generator 11 are included in the air. The air containing ions is blown into the living room from one or both of the outlets 4 and 5. As a result, the air purifier 1 is blown, and the air in the living room is cleaned.

Next, the operation of the cleaning device 30 will be described. At a predetermined time, the cleaning device 30 is driven and the cleaning operation by the cleaning device 30 is started. The cleaning operation is started, for example, when the cumulative operating time of the air purifier 1 within a predetermined period exceeds a predetermined time. The blower 10 is stopped when the cleaning device 30 is driven.

When the cleaning device 30 is driven, the drive motor 100 rotates, and the bevel gear 61 (see FIGS. 6 and 7) rotates counterclockwise when viewed from the front. The bevel gear 62 and the spur gear 63 rotate clockwise when viewed from the right side (viewed from the direction of arrow A). As a result, the take-up roll 50 rotates clockwise when viewed from the right side, and the pre-filter 6 is pulled out from the supply roll 40 and taken up.

The spur gear 64, the internal gear 65, the spur gear 66 and the spur gear 67 rotate counterclockwise when viewed from the right side surface, and the spur gear 68 rotates clockwise when viewed from the right side surface. As a result, the brush body 80 rotates clockwise when viewed from the right side surface. At this time, the brush bristles 82 of the brush body 80 slide on the pre-filter 6 on the take-up roll 50. As a result, the dust on the pre-filter 6 is removed, and the dust is collected in the container 92.

At this time, the rotation direction of the take-up roll 50 and the rotation direction of the brush body 80 are the same. Therefore, the brush bristles 82 of the brush body 80 slide on the pre-filter 6 from the direction opposite to the traveling direction of the pre-filter 6. Therefore, the brush body 80 can surely remove the dust on the pre-filter 6.

Further, it is desirable that the peripheral speed of the brush body 80 is larger than the peripheral speed of the take-up roll 50. As a result, the contact length of the brush bristles 82 in the circumferential direction on the prefilter 6 can be made longer than the contact cycle of the brush bristles 82, and the brush bristles 82 can be brought into contact with the prefilter 6 without gaps. ..

The brush bristles 82 on the rotating shaft 81 are combed by the comb portion 93, and the dust adhering to the brush bristles 82 falls into the container 92.

When the prefilter 6 is wound around the take-up roll 50, the rotating body 71 (see FIG. 8) of the urging portion 70 connected to the supply roll 40 is clockwise when viewed from the right side (viewed from the direction of arrow A). Rotate to. As a result, the mainspring 75 is wound, and the urging force of the mainspring 75 is increased.

At this time, the symbol 6g (see FIG. 4) on the storage portion 6c of the pre-filter 6 moves downward and is visually recognized through the suction port 3. As a result, the user can easily recognize that the cleaning device 30 is being driven. Therefore, it is possible to prevent the user from misidentifying that the blower 10 has stopped due to a failure. The blower 10 may be operated at a low speed when the cleaning device 30 is driven.

When the amount of rotation of the drive motor 100 reaches a predetermined value, the drive motor 100 reverses. As a result, the bevel gear 61 rotates in the direction opposite to that at the time of winding (clockwise in the present embodiment). At this time, the take-up roll 50 and the brush body 80 rotate counterclockwise when viewed from the right side surface.

When the winding of the prefilter 6 by the winding roll 50 is completed, the urging force of the mainspring 75 is larger than that before winding. Therefore, when the drive motor 100 is reversed, the rotating body 71 rotates counterclockwise when viewed from the right side surface due to the restoring force of the mainspring 75. As a result, the pre-filter 6 is wound around the supply roll 40.

When the amount of rotation of the drive motor 100 reaches a predetermined value, the drive motor 100 is stopped. As a result, the cleaning operation by the cleaning device 30 is completed.

A sensor that detects the outer diameter of the take-up roll 50 may be provided. As a result, the drive motor 100 can be inverted by detecting that the outer diameter of the take-up roll 50 in the state where the pre-filter 6 is wound becomes larger than the predetermined outer diameter. Further, the drive motor 100 can be stopped by detecting that the outer diameter of the take-up roll 50 becomes smaller than the predetermined outer diameter.

After the cleaning operation by the cleaning device 30 is completed, the user can remove the dust collecting portion 90 from the cover portion 21 and dispose of the dust accumulated in the container 92.

Further, when the pre-filter 6 is replaced, a supply roll 40 to which one end of the pre-filter 6 is attached is attached to the cover portion 21. Then, the lower end of the pre-filter 6 is attached to the take-up roll 50.

At this time, the pre-filter 6 between the supply roll 40 and the take-up roll 50 may be loosened. In this case, when the user turns the handle 73 of the urging portion 70 counterclockwise when viewed from the right side (viewed from the direction of arrow A), the rotating bodies 71 and 72 rotate counterclockwise when viewed from the right side. To do. As a result, the pre-filter 6 is wound around the supply roll 40, and the slack of the pre-filter 6 can be eliminated. Therefore, the air sucked from the suction port 3 when the blower 10 is driven can surely pass through the pre-filter 6.

According to the present embodiment, the urging portion 70 of the cleaning device 30 has a mainspring 75 that urges the rotation axis of the supply roll 40 in the direction opposite to the winding direction when the prefilter 6 of the winding roll 50 is wound. As a result, when the drive motor 100 is inverted after the winding of the winding roll 50 is completed, the prefilter 6 is wound around the supply roll 40 by the restoring force of the mainspring 75. Therefore, it is not necessary to separately provide a motor for rotating the supply roll 40 in the direction opposite to the winding direction W of the winding roll 50 from the drive motor 100. As a result, the manufacturing cost of the air purifier 1 can be reduced. Further, since the mainspring 75 is used, the prefilter 6 can be wound around the winding roll 50 over a long distance while being urged. As a result, the degree of freedom in designing the size of the prefilter 6 can be increased.

Further, the urging portion 70 locks the shaft portion of the supply roll 40 to attach the rotating body 71 (first rotating body) to which one end of the Zenmai 75 is attached, and the other end of the Zenmai 75 is attached and the Zenmai 75 is attached. It has a rotating body 72 (second rotating body) in which rotation in a direction for reducing the force is restricted, and a handle 73 for rotating the rotating body 72. As a result, when the supply roll 40 is attached to the cover portion 21 and the handle 73 is operated, the prefilter 6 is wound in the direction opposite to the winding direction W. Therefore, the slack of the pre-filter 6 can be reduced, and air containing dust can surely pass through the pre-filter 6.

Further, the urging portion 70 includes a connecting member 74 arranged between the handle 73 and the rotating body 72 to regulate the rotation of the handle 73 in the direction of reducing the urging force of the mainspring 75, and the connecting member 74 rotates. It rotates integrally with the body 72. As a result, it is possible to reliably prevent the rotating body 72 from rotating in the direction of reducing the urging force of the mainspring 75.

Further, the shaft 41 of the supply roll 40 has a core material 41a having a groove portion 41b and a sleeve 41d made of an elastic body having a C-shaped cross section that fits outside the core material 41a, and the prefilter 6 is formed by the sleeve portion 41d and the groove portion 41b. The bar material 6a of the above is elastically sandwiched. As a result, when the opening 41e of the sleeve 41d is widened, the bar material 6a can be easily removed from the shaft 41. Further, the sleeve 41d can prevent the bar material 6a from falling off from the shaft 41. The same applies to the take-up roll 50.

Further, the core material 41a of the supply roll 40 is made of metal, and the sleeve 41d is made of a resin molded product. The same applies to the take-up roll 50. As a result, the bar material 6a can be easily attached to and detached from the shafts 41 and 51 while sufficiently ensuring the strength of the shafts 41 and 51.

Further, the drive motor 100 is arranged in the main body 20 of the housing 2, and the supply roll 40 and the take-up roll 50 are arranged in the cover 21. As a result, the cover portion 21 can be removed from the main body portion 20 and the pre-filter 6 can be easily replaced. Although the air purifier 1 is provided with a cleaning device 30, the pre-filter 6 may be clogged depending on the installation location of the air purifier 1 (for example, a place with a lot of oil stains such as a kitchen). .. Even in this case, the pre-filter 6 can be easily removed and thoroughly cleaned.

Further, the brush body 80 is connected to a drive motor 100 that rotationally drives the take-up roll 50, rotates when the take-up roll 50 rotates, and slides on the pre-filter 6 (filter) on the take-up roll 50. This eliminates the need to separately provide the conventional brush body motor for rotating the brush body 80 with the drive motor 100. Therefore, the manufacturing cost of the air purifier 1 can be further reduced.

Further, the rotation direction of the take-up roll 50 and the rotation direction of the brush body 80 are the same direction. As a result, the brush body 80 slides on the prefilter 6 from the direction opposite to the traveling direction of the prefilter 6. Therefore, the brush body 80 can surely remove the dust on the pre-filter 6.

Further, it is desirable that the peripheral speed of the brush body 80 is larger than the peripheral speed of the take-up roll 50. As a result, the contact length of the brush bristles 82 in the circumferential direction on the prefilter 6 can be made longer than the contact cycle of the brush bristles 82, and the brush bristles 82 can be brought into contact with the prefilter 6 without gaps. .. Therefore, the dust on the pre-filter 6 can be removed more reliably.

Further, a bevel gear 61 (first crossing shaft gear) having a fitting hole 61a fitted to the rotating shaft of the drive motor 100, a bevel gear 62 (second crossing shaft gear) that meshes with the bevel gear 61, and an umbrella. A spur gear 63 (first parallel shaft gear) that rotates integrally with the gear 62 and is connected to the take-up roll 50, and a spur gear 64 (second parallel shaft gear) that meshes with the spur gear 63 and is connected to the brush body 80. It is equipped with a gear). Thereby, the rotation of the take-up roll 50 and the brush body 80 by one drive motor 100 can be easily realized.

Further, since the spur gear 63 connected to the take-up roll 50 is arranged closer to the drive motor 100 than the spur gear 64 connected to the brush body 80, the damping of the driving force transmitted to the take-up roll 50 is suppressed. it can. As a result, the take-up roll 50 urged by the urging portion 70 via the pre-filter 6 can be reliably rotationally driven by the drive motor 100 against the urging force.

Further, between the brush body 80 and the spur gear 64, an internal gear 65 provided integrally with the spur gear 64 and a spur gear 66 (third parallel shaft gear) meshing with the internal gear 65 are provided, and the brush body 80 is provided. Is arranged between the rotating shaft of the spur gear 63 and the rotating shaft of the spur gear 64. As a result, the brush body 80 that slides on the pre-filter 6 on the take-up roll 50 can be easily arranged close to the take-up roll 50.

Further, the pre-filter 6 has a ventilation portion 6b arranged so as to face the suction port 3 when the cleaning device 30 is stopped, and a storage portion 6c which is sent out from the supply roll 40 when the cleaning device 30 is driven. Then, a symbol 6g that can be visually recognized from the suction port 3 is provided on the storage portion 6c so as to be distinguished from the ventilation portion 6b. As a result, the movement of the pre-filter 6 can be easily visually recognized, and the user can easily recognize the cleaning of the pre-filter 6 by the cleaning device 30.

Further, the blower 10 is stopped when the cleaning device 30 is driven. As a result, it is possible to prevent the dust immediately after being removed from the pre-filter 6 from being sucked into the downstream side of the pre-filter 6. In addition, the symbol 6g can prevent the user from misidentifying that the blower 10 has stopped due to a failure.

<Second Embodiment>
Next, the second embodiment of the present invention will be described. FIG. 9 shows a side view of a support member of the cover portion of the air purifier of the present embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 8 are designated by the same reference numerals. In the present embodiment, the configuration of the support member 49 of the cover portion 21 is different from that of the first embodiment. Other parts are the same as those in the first embodiment.

A resin rotating plate 400 that rotates in the vertical direction is provided at the front end of the support member 49 (see FIG. 3) on the right side of the supply roll 40 of the cover portion 21. The shaft portion 401 of the rotating plate 400 is biased to the rear of the center of the rotating plate 400 in the front-rear direction. As a result, as shown in FIG. 9, when the supply roll 40 is not mounted on the support member 49, the front end portion of the rotating plate 400 protrudes forward of the support member 49. Therefore, if the cover portion 21 is attached to the main body portion 20 in a state where the supply roll 40 is not attached to the cover portion 21, the front end portion of the rotating plate 400 interferes with the main body portion 20. Therefore, it is possible to easily prevent forgetting to attach the supply roll 40 to the cover portion 21.

On the other hand, as shown in FIG. 10, when the supply roll 40 is mounted on the support member 49, the supply roll 40 collides with the rear end portion of the rotating plate 400, and the rotating plate 400 rotates upward. As a result, the front end portion of the rotating plate 400 retracts rearward, and interference between the rotating plate 400 and the main body 20 is prevented when the cover portion 21 is attached to the main body 20.

It should be noted that the same effect as that of the first embodiment can be obtained in this embodiment as well.

<Third Embodiment>
Next, a third embodiment of the present invention will be described. FIG. 11 shows a side view of a support member of the cover portion of the air purifier of the present embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 8 are designated by the same reference numerals. In the present embodiment, the configuration of the support member 49 of the cover portion 21 is different from that of the first embodiment. Other parts are the same as those in the first embodiment.

The support member 49 has a fixed portion 49a and a moving portion 49b. A spring 49c is provided at the rear end of the moving portion 49b, and one end of the spring 49c is attached to the front surface of the cover portion 21. At this time, with the spring 49c extended, the front end portion of the moving portion 49b is configured to protrude forward from the fixed portion 49a. As a result, as shown in FIG. 11, when the supply roll 40 is not mounted on the support member 49, the front end portion of the moving portion 49b protrudes forward from the fixing portion 49a. Therefore, if the cover portion 21 is attached to the main body portion 20 while the supply roll 40 is not attached to the cover portion 21, the front end portion of the moving portion 49b interferes with the main body portion 20. Therefore, it is possible to easily prevent forgetting to attach the supply roll 40 to the cover portion 21.

On the other hand, as shown in FIG. 12, when the supply roll 40 is mounted on the support member 49, the supply roll 40 in contact with the fixing portion 49a moves the moving portion 49b rearward. As a result, the front end portion of the moving portion 49b retracts rearward, and interference between the moving portion 49b and the main body portion 20 is prevented when the cover portion 21 is attached to the main body portion 20.

The same effect as that of the first embodiment can be obtained in this embodiment as well.

In the second embodiment and the third embodiment, a photo interrupter (not shown) may be provided in place of the magnet 23 and the Hall element of the first embodiment. The photo interrupter has a light emitting part and a light receiving part facing each other. When the light receiving unit detects that the light from the light emitting unit to the light receiving unit is blocked by the rotating plate 400 of the second embodiment or the moving unit 49b of the third embodiment protruding forward from the support member 49. , The driving of the blower 10 is prohibited. As a result, it is possible to prevent the air purifier 1 from blowing air when the cover portion 21 is not attached to the main body portion 20.

<Fourth Embodiment>
Next, a fourth embodiment of the present invention will be described. FIG. 13 shows a plan view of the pre-filter of the air purifier of the present embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 8 are designated by the same reference numerals. In the present embodiment, the configuration of the pre-filter 6 is different from that of the first embodiment. Other parts are the same as those in the first embodiment.

The sheet-shaped pre-filter 6 is formed by arranging the first regions A1 to the fourth regions A4 in the winding direction W. The first region A1 is a region where the mesh density is low, the second region A2 is a region where the mesh density is high, the third region A3 is a region where activated carbon is attached to the mesh, and the fourth region A4 is a region where a fragrance is attached to the mesh. It is an area.

Further, the air purifier 1 has a dust sensor (not shown) and an odor sensor (not shown). The dust sensor detects the dust concentration in the air in the living room. The odor sensor detects the concentration of odorous components in the air in the living room.

In the air purifier 1 having the above configuration, for example, when it is determined from the detection result of the dust sensor that the dust concentration in the air is low, the drive motor 100 is driven to rotate the take-up roll 50, and the first region A1 is set. It is arranged facing the suction port 3. As a result, the ventilation efficiency of the air purifier 1 can be improved. Further, for example, when it is determined from the detection result of the dust sensor that the dust concentration in the air is high, the drive motor 100 is driven to rotate the take-up roll 50, and the second region A2 faces the suction port 3. Be distributed. The region to be arranged facing the suction port 3 can be determined based on the length of the winding direction W of the first region A1 to the fourth region A4 and the rotation amount of the drive motor 100.

When it is determined from the detection result of the odor sensor that the concentration of the odor component in the air is high, the drive motor 100 is driven to rotate the take-up roll 50, and the third region A3 or the fourth region A4 is the suction port 3. It is arranged facing the.

As described above, since the region of the pre-filter 6 suitable for the air condition in the living room is arranged facing the suction port 3, the usability of the air purifier 1 can be improved.

The same effect as that of the first embodiment can be obtained in this embodiment as well. Further, the pre-filter 6 is formed by arranging the first regions A1 to the fourth regions A4 in the winding direction W. As a result, the region of the pre-filter 6 suitable for the air condition in the living room is arranged so as to face the suction port 3, so that the usability of the air purifier 1 can be improved.

The user may operate the operation unit 19 to select the first area A1 to the fourth area A4.

<Fifth Embodiment>
Next, a fifth embodiment of the present invention will be described. FIG. 14 shows a perspective view of a holding member of the pre-filter of the air purifier of the present embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 8 are designated by the same reference numerals. In the present embodiment, the configuration of the pressing member 22 is different from that in the first embodiment. Other parts are the same as those in the first embodiment.

The pressing member 22 of the present embodiment has only ribs 22b extending in the winding direction W of the prefilter 6 (vertical direction in the present embodiment), and is in a direction orthogonal to the winding direction W (horizontal direction in the present embodiment). Has no extending ribs. As a result, it is possible to prevent dust from falling due to the ribs extending in the direction orthogonal to the winding direction W sliding on the prefilter 6.

It should be noted that the same effect as that of the first embodiment can be obtained in this embodiment as well.

In the first to fifth embodiments, the supply roll 40 and the take-up roll 50 are arranged on the cover portion 21, but instead of this, they may be arranged on the main body portion 20.

In the cleaning operation of the air purifier 1 of the first to fifth embodiments, the winding speed of the winding roll 50 and the rewinding speed to the supply roll 40 may be the same or different. For example, when the winding speed of the winding roll 50 is made smaller than the rewinding speed to the supply roll 40, the rewinding speed can be increased while removing dust on the prefilter 6 to shorten the cleaning operation time. it can.

The present invention can be used in an air purifier equipped with a cleaning device for cleaning the filter.

1 Air purifier 2 Housing 3 Suction port 4, 5 Air outlet 6 Pre-filter (filter)
6a Bar material 6b Ventilation part 6c Storage part 6g Design 7 Deodorizing filter 8 Air passage 8a 1st branch passage 8b 2nd branch passage 9 Dust collection filter 10 Blower 11 Ion generator 12 Damper 14, 15 Wind direction plate 20 Main body 21 Cover 22 Presser member 23 Magnet 30 Cleaning device 40 Supply roll 41 Shaft 41a Core material 41d Sleeve 50 Winding roll 60 Gear unit 61 Bevel gear (first crossing shaft gear)
62 Bevel gear (second crossing shaft gear)
63 Spur gear (first parallel shaft gear)
64 Spur gear (second parallel shaft gear)
65 Internal gear 66 Spur gear (3rd parallel shaft gear)
69 Housing 70 Biasing part 71 Rotating body (1st rotating body)
71a Holding part 72 Rotating body (second rotating body)
72a Claw 73 Handle 74 Connecting member 75 Zenmai 76 Compression spring 77 Stopper 77a Torsion coil spring 78, 79 Housing 80 Brush body 81 Shaft 82 Brush hair bundle 90 Dust collection part 91 Lid part 91a Opening 92 Container 93 Comb part 100 Drive motor 200 Part 201 Tray 202 Humidification filter 300 Tape-like member 400 Rotating plate 401 Shaft part SP space

Claims (5)

A housing that opens the suction port and the air outlet, an air passage that connects the suction port and the air outlet, a blower arranged in the air passage, and a filter arranged facing the suction port. In an air purifier equipped with a cleaning device for cleaning the filter,
A supply roll in which the filter is wound in the form of a sheet, a winding roll for winding the filter, a drive motor for rotationally driving the winding roll, and the supply when the winding roll is wound. a biasing unit having a mainspring for urging the rotation axis of the roll in the direction opposite to the winding direction, and a brush body which slides on the filter during rotation of the winding roll possess,
The supply roll is detachably arranged in the housing, and the urging portion locks the shaft portion of the supply roll to attach one end of the zenmai to the first rotating body, and the other end of the zenmai is attached. An air purifier characterized by having a second rotating body that is attached and whose rotation in a direction that reduces the urging force of the Zenmai is restricted, and a handle that rotates the second rotating body . The urging portion includes a connecting member arranged between the handle and the second rotating body to regulate the rotation of the handle in a direction of reducing the urging force of the mainspring, and the connecting member is the first. 2. The air purifier according to claim 1 , wherein the air purifier rotates integrally with a rotating body. A housing that opens the suction port and the air outlet, an air passage that connects the suction port and the air outlet, a blower arranged in the air passage, and a filter arranged facing the suction port. In an air purifier equipped with a cleaning device for cleaning the filter,
A supply roll in which the filter is wound in the form of a sheet, a winding roll for winding the filter, a drive motor for rotationally driving the winding roll, and the supply when the winding roll is wound. It has an urging portion having a mainspring that urges the rotation axis of the roll in the direction opposite to the winding direction, and a brush body that slides on the filter when the winding roll rotates .
The housing has a main body portion in which the blower is arranged and a cover portion which is detachably arranged with respect to the main body portion and has an opening of the suction port, and the drive motor is arranged in the main body portion. both air purifier you characterized in that the supply roll and the take-up roll is disposed in the cover portion. Grooves in which the filter has bar members extending in the axial direction at both ends in the winding direction, and the supply roll and the shaft forming the shaft portion of the winding roll extend in the axial direction and the inner wall surfaces facing each other are inclined. 1 to claim 1, which has a core material having a core material and a sleeve made of an elastic body having a C-shaped cross section that fits onto the core material, and elastically sandwiches the bar material between the sleeve and the groove portion. The air purifier according to any one of claims 3. The air purifier according to claim 4, wherein the core material is made of metal, and the sleeve is made of a resin molded product.