WO2018073989A1

WO2018073989A1 - Air purifier

Info

Publication number: WO2018073989A1
Application number: PCT/JP2017/007329
Authority: WO
Inventors: 渉鬼木
Original assignee: シャープ株式会社
Priority date: 2016-10-19
Filing date: 2017-02-27
Publication date: 2018-04-26
Also published as: SG11201902012XA; JPWO2018073989A1; JP6718971B2; RU2704933C1; CN109906344A; MY195128A; PH12019500465A1; CN109906344B; TWI636823B; TW201815455A

Abstract

Provided is an air purifier capable of sufficiently cleaning a filter. This air purifier 1 comprises: a housing 2 having a suction port 3 and blowout ports 4, 5 opened; an air passage 8 which connects the suction port 3 and the blowout ports 4, 5; an air blower 10 which is disposed within the air passage 8; a prefilter 6 which is disposed so as to face the suction port 3; and a cleaning device 30 which cleans the prefilter 6. The cleaning device 30 has: a supply roll 40 around which the sheet-like prefilter 6 is wrapped; a wind-up roll 50 which winds up the prefilter 6; a drive motor 100 which rotationally drives the wind-up roll 50; a biasing unit 70 which biases the rotary shaft of the supply roll 40 in the opposite direction from the wind-up direction during the wind-up of the wind-up roll 50; a brush body 80 which slides against the prefilter 6 when the wind-up roll 50 is rotating; and a rotational amount detection unit 110 which detects the rotational amount of the drive motor 100. The loss of synchronization of the drive motor 100 is determined on the basis of the detection result of the rotational amount detection unit 110, and the drive motor 100 is inverted upon losing synchronization.

Description

Air cleaner

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

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

において In the air cleaner configured as described above, when the operation is started, the blower is driven and air in the room is sucked from the suction port. The air sucked from the suction port is sent out from the outlet after dust is collected by the prefilter. Thereby, the air cleaning in a living room can be performed.

In recent years, there has been a growing demand for air purifiers equipped with a cleaning device for cleaning prefilters. Patent Document 2 discloses a cleaning device that cleans a filter disposed facing an air inlet of a projector. The 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-like filter is wound around the straw supply roll. The take-up roll is rotated by driving the take-up roll motor, and takes up the filter drawn from the supply roll. The brush body forms brush hairs radially on the shaft body, and rotates by driving the brush body motor when the take-up roll rotates, and the brush hairs rub the filter to remove dust. The dust collection box collects dust removed from the filter by the brush body. The supply roll is rotationally driven by a supply roll motor to rewind the filter wound on the take-up roll. Thereby, dust on the filter is removed and the filter is cleaned.

Moreover, the cleaning device of Patent Document 2 has a detection switch. The detection switch is disposed in the vicinity of the take-up roll, and detects whether or not the filter wound on the take-up roll has a predetermined outer diameter. When the detection switch detects that the filter wound on the take-up roll has a predetermined outer diameter, the supply roll motor is driven. Thereby, the filter wound up by the winding roll is rewound to the supply roll.

JP 2009-66466 A (page 8, page 9, FIG. 1) Japanese Patent No. 5627066 (page 6, page 7, FIG. 1, FIG. 4)

However, according to the cleaning device of Patent Document 2, since the filter is a sheet, the outer diameter varies with respect to the winding amount of the filter wound on the winding roll. For this reason, there was a problem that the detection switch could not accurately detect the end of winding of the winding roll and the cleaning of the filter was insufficient.

An object of the present invention is to provide an air cleaner that can sufficiently clean a filter.

To achieve the above object, the present invention provides a housing that opens a suction port and a blowout port, an air passage that connects the suction port and the blowout port, a blower disposed in the air passage, In an air cleaner comprising a filter arranged facing the suction port and a cleaning device for cleaning the filter,
The cleaning device has a sheet-like filter wound around the supply roll, a winding roll that winds up the filter, a drive motor that rotates the winding roll, and the supply at the time of winding the winding roll An urging unit that urges the rotation shaft of the roll in a direction opposite to the winding direction, a brush body that slides on the filter when the winding roll rotates, and a rotation amount detection unit that detects the rotation amount of the drive motor. And
A step-out of the drive motor is determined based on a detection result of the rotation amount detection unit, and the drive motor is reversed when the step-out occurs.

According to the present invention, in the air cleaner configured as described above, the rotation amount detection unit includes a photo interrupter and a slit disk that rotates in conjunction with the drive motor, and the filter is wound by the winding roll. It is preferable to determine that the drive motor is out of step when the rotation amount detection unit does not detect a pulse output by the rotation of the slit disk for a predetermined time.

In addition, in the air cleaner having the above-described configuration, it is preferable that the present invention performs error notification when the rotation amount detected by the rotation amount detection unit when the drive motor has stepped out is outside a predetermined range.

In the air cleaner having the above-described configuration, the present invention further includes an attachment / detachment sensor that detects attachment / detachment of the supply roll, and the drive motor is driven when the cleaning device is driven for the first time after the supply roll is attached / detached. It is preferable that the rotation amount of the drive motor at the time of reversal is smaller than the rotation amount of the drive motor when the drive motor steps out.

In the air cleaner having the above-described configuration, when the cleaning device is stopped during driving and restarted, the rotation amount detected by the rotation amount detection unit is reset and the filter of the filter by the winding roll is reset. When the rotation amount detected by the rotation amount detection unit at the end of winding of the filter by the drive motor is larger than a predetermined rotation amount, the drive motor is reversed by the detected rotation amount. When the rotation amount is smaller than the predetermined rotation amount, it is preferable to reverse the drive motor by the predetermined rotation amount.

According to the present invention, the step-out of the drive motor is determined based on the detection result of the rotation amount detection unit, and when the step-out occurs, the drive motor is reversed. Thereby, the end of winding of the winding roll can be accurately detected. Therefore, the filter can be sufficiently cleaned.

The front view which shows the air cleaner of 1st Embodiment of this invention. Side surface sectional drawing which shows the air cleaner of 1st Embodiment of this invention. The disassembled perspective view which shows the cleaning apparatus of the air cleaner of 1st Embodiment of this invention. The top view which shows the pre filter of the air cleaner of 1st Embodiment of this invention. Side surface sectional drawing of the supply roll of the cleaning apparatus of the air cleaner of 1st Embodiment of this invention. The perspective view which shows the inside of the winding roll of the cleaning apparatus of the air cleaner of 1st Embodiment of this invention, a dust collection part, and a gear unit. The expansion perspective view inside the gear unit of the cleaning device of the air cleaner of a 1st embodiment of the present invention. The perspective view which shows the rotation amount detection part of the air cleaner of 1st Embodiment of this invention. The disassembled perspective view of the urging | biasing part of the cleaning apparatus of the air cleaner of 1st Embodiment of this invention. The flowchart which shows operation | movement of the cleaning apparatus of the air cleaner of 1st Embodiment of this invention. The side view before the supply roll of the support member of the cover part of the air cleaner of 2nd Embodiment of this invention is attached. The side view after the supply roll of the supporting member of the cover part of the air cleaner of 2nd Embodiment of this invention was attached. The side view before the supply roll of the support member of the cover part of the air cleaner of 3rd Embodiment of this invention is attached. The side view after the supply roll of the support member of the cover part of the air cleaner of 3rd Embodiment of this invention was attached. The top view of the pre filter of the air cleaner of 4th Embodiment of this invention. The perspective view of the pressing member of the air cleaner of 5th Embodiment of this invention.

<First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. FIG.1 and FIG.2 has shown the front view and side sectional drawing of the air cleaner of 1st Embodiment. The arrow S indicates the air flow. The air cleaner 1 has a housing 2 that is installed on a floor surface or the like in a living room by opening a suction port 3 and

air outlets

4 and 5. The housing 2 has a main body portion 20 and a cover portion 21. The cover part 21 is detachably arranged on the back surface of the main body part 20 and opens the suction port 3. The main body 20 opens the

air outlets

4 and 5 at the upper front surface and the upper surface, respectively.

The

wind outlets

4 and 5 are respectively provided with

wind direction plates

14 and 15 that change the wind direction. The wind direction plate 14 is formed of a flat plate and is supported by a rotation shaft portion (not shown) provided on the wind direction plate 14 so as to be rotatable in the vertical direction. A plurality of vertical louvers 14 a are vertically arranged on the lower surface of the wind direction plate 14 in the left-right direction. The vertical louvers 14a at both ends are inclined outward in the left-right direction as they go forward.

The breeze wind direction plate 15 is formed of a flat plate and is supported by a rotation shaft portion 15b provided at the front portion of the wind direction plate 15 so as to be rotatable in the vertical direction. A plurality of vertical louvers 15 a are vertically arranged in the left-right direction on the lower surface of the wind direction plate 15. The vertical louvers 15a at both ends are inclined outward in the left-right direction as they go backward.

The screen

wind direction plates

14 and 15 close the

air outlets

4 and 5 when the operation of the air purifier 1 is stopped, and open the

air outlets

4 and 5 during the operation, respectively.

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 unit 200, and the blower are sequentially arranged from the suction port 3 toward the blowout ports 4 and 5 (from the upstream to the downstream of the airflow). 10. An ion generator 11 and a damper 12 are provided.

The soot air passage 8 has a first branch passage 8 a and a second branch passage 8 b 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 larger than the cross-sectional area of the air flow path of the second branch passage 8b. Is also getting smaller.

The heel damper 12 is formed in a thin plate shape, and is supported by the pivot shaft portion 12a so as to be pivotable in the vertical direction. The damper 12 can be rotated in the direction of opening the first branch passage 8a from the closed position (see FIG. 2) (counterclockwise direction in FIG. 2). The damper 12 changes the air volume balance of the first branch passage 8a and the second branch passage 8b.

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

The pre-filter 6 is formed of a sheet-like mesh such as polypropylene and is disposed on the cover portion 21 so as to face 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 odor components in the air to deodorize the air.

The soot dust collecting 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 material (not shown). The dust collection filter 9 can collect fine dust in the air and fine particles such as PM2.5 having a particle diameter smaller than a predetermined particle diameter (for example, 3 μm).

The humidification unit 200 immerses the lower part of the humidification filter 202 in the water in the tray 201 and humidifies the air passing through the humidification filter 202. Thereby, humidified air is sent out from the

blower outlets

4 and 5.

The ion generator 11 has an ion generation surface 11 a that generates ions when a high voltage is applied, and the ion generation surface 11 a faces the air passage 8. A voltage having an AC waveform or an impulse waveform is applied to the ion generation surface 11a. When the applied voltage of the ion generating surface 11a is a positive voltage, positive ions mainly composed of H ⁺ (H ₂ O) m are generated, and when a negative voltage is applied, negative ions mainly composed of O ₂ ⁻ (H ₂ O) n are generated. appear. Here, m and n are integers. H ⁺ (H ₂ O) m and O ₂ ⁻ (H ₂ O) n aggregate on the surface of airborne bacteria and odor components and surround them.

Then, as shown in the formulas (1) to (3), the active species [.OH] (hydroxyl radical) and H ₂ O ₂ (hydrogen peroxide) are agglomerated and produced on the surface of a microorganism or the like by collision. Destroy airborne bacteria. Here, m ′ and n ′ are integers. Therefore, sterilization and odor removal in the room can be performed by generating positive ions and negative ions and sending them out from the

outlets

4 and 5.

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 upper front portion of the heel body 20. The operation unit 19 has a plurality of buttons (not shown), and sets the operation of the air cleaner 1 by a user operation. By operating each button, it is possible to change the air volume of the air sent from the

air outlets

4 and 5 and change the air blowing direction.

A display unit 17 is provided on the front upper portion of the main body unit 20. The display part 17 is arrange | positioned at the right side of the blower outlet 4, for example, is comprised by the liquid crystal panel.

Moreover, the cover unit 21 is provided with a cleaning device 30 for cleaning the prefilter 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 collection unit 90, and a drive motor 100 (see FIG. 2).

The scissors supply roll 40 and the take-up roll 50 are respectively arranged on the upper part and the lower part of the cover part 21 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, and is sent out from the supply roll 40 when the cleaning device 30 is driven and wound around the take-up roll 50.

The scissors supply roll 40 has a shaft 41 extending in the left-right direction, and caps 48 are fitted to both ends of the shaft 41. The cap 48 is rotatably supported by a support member 49 disposed on the upper end portion of the inner surface of the cover portion 21. Thereby, supply roll 40 is arranged so that rotation is possible with the axis of rotation extended in the horizontal direction. Further, one end (right end) of the supply roll 40 is connected to the urging unit 70 through the cap 48.

Also, an attachment / detachment sensor (not shown) that detects attachment / detachment of the supply roll 40 to / from the support member 49 is provided. The attachment / detachment sensor includes, for example, a hall element (not shown) and a magnet (not shown). The magnet is attached to the supply roll 40. The hall element is disposed at a position facing the magnet of the supply roll 40 on the back surface of the main body 20.

The reed winding roll 50 has a shaft 51 extending in the left-right direction, and caps 58 are fitted to 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 portion of the inner surface of the cover portion 21. Thereby, the winding roll 50 is arrange | positioned so that rotation with the rotating shaft extended in the left-right direction is possible.

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

A symbol 6g that is distinguishable from the ventilation portion 6b and visible from the suction port 3 is provided on the bag storage portion 6c. In the present embodiment, red letters “cleaning” are used as the symbol 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. In addition, since the structure of the winding roll 50 is the same structure as the supply roll 40, the supply roll 40 is demonstrated 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 opposed inner wall surface 41c of the groove 41b is inclined, and the circumferential width of the groove 41b is wider on the outer peripheral side than on the inner peripheral side. The peripheral surface of the bar material 6a of the pre-filter 6 is supported by the inner wall surface 41c of the groove portion 41b.

The collar sleeve 41d is formed of a resin molded product having a C-shaped cross section having an opening 41e extending in the axial direction, and is fitted around the core material 41a. The pre-filter 6 that supports the bar material 6a on the groove 41b is inserted through the opening 41e. The width of the opening 41e of the sleeve 41d is smaller than the diameter of the bar member 6a, and the bar member 6a supported by the core member 41a is prevented from coming off. At this time, both end portions in the circumferential direction of the sleeve 41d press the bar material 6a by elasticity, and the bar material 6a is elastically held by the groove portion 41b of the core material 41a and the sleeve 41d.

Moreover, when a force is applied in a direction in which the opening 41e of the sleeve 41d is widened (left and right 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 through the opened opening 41e. Similarly, the bar material 6 a at the lower end of the pre-filter 6 can be attached to and detached from the shaft 51. Thereby, the prefilter 6 can be easily detached from the cleaning device 30 and the prefilter 6 can be replaced.

In FIG. 3, the brush body 80 is disposed in a dust collecting portion 90 that is 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 as will be described later. A spur gear 68 is provided at one end (right end) of the shaft 81, and a bristle bundle 82 is implanted on the peripheral surface of the shaft 81 in a spiral manner at a predetermined interval.

The dust collecting unit 90 includes a lid 91, a container 92, and a comb 93, and is detachably attached to the cover unit 21. The container 92 is formed 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 portion 91 a that opens over the left and right ends, and covers the upper surface of the container 92. The bristle bundle 82 of the brush body 80 is exposed to the outside from the opening 91a. The comb portion 93 is formed to extend in the left-right direction, and is arranged in the container 92 with the tooth tip facing upward. The bristles 82 of the rotating brush body 80 abut the tooth tips of the comb portion 93. The dust adhering to the bristle bundle 82 is removed from the bristle bundle 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 stored in the container 92. At this time, since the container 92 is formed of a transparent resin, the user can easily grasp the amount of dust in the container 92.

The scissors drive motor 100 (see FIG. 2) is disposed in the main body 20 of the housing 2, and a rotation shaft (not shown) of the drive motor 100 projects rearward from the back surface of the main body 20. A stepping motor is used as the drive motor 100.

In addition, a presser member 22 is disposed in front of the prefilter 6 with a predetermined gap. The pressing member 22 is detachably attached to the cover portion 21. The holding member 22 has a rectangular frame 22a formed of a synthetic resin such as ABS. In the frame 22a, a rib 22b extending in the vertical direction and a plurality of (three in this embodiment) ribs 22c extending in the horizontal direction and arranged in the vertical direction are provided. As a result, the pressing member 22 has a plurality of rows and a plurality of rows of windows. The prefilter 6 can be stably disposed along the suction port 3 by the pressing member 22, and slackening of the prefilter 6 due to the suction airflow can be prevented.

A magnet 23 is provided at the center of the right end of the frame 22a of the eaves holding member 22. A Hall element (not shown) is provided at a position facing the magnet 23 of the main body 20. The air cleaner 1 can determine whether or not the cover portion 21 is attached to the main body portion 20 by using a Hall element. And the air cleaner 1 prohibits the operation | movement of the air blower 10, when it is judged that the cover part 21 is not attached to the main-body part 20. FIG. Thereby, the ventilation operation | movement of the air cleaner 1 in the state in which the cover part 21 is not attached to the main-body part 20 is avoided. Further, when the cover unit 21 is removed from the main body unit 20 while the cleaning device 30 is being driven, the driving of the cleaning device 30 is stopped.

In addition, the gear unit 60 and the urging portion 70 are disposed at one end portion (right end portion) of the cover portion 21. For this reason, a space SP is formed between the gear unit 60 and the biasing portion 70 on the inner surface of the cover portion 21. A tape-shaped member 300 describing information related to the instruction of the air cleaner 1 is attached to the space SP. The information includes information related to a method of removing the prefilter 6 from the cleaning device 30 and information related to an operation method of a handle 73 of the urging unit 70 described later.

Thereby, the user visually recognizes the above information when removing the cover portion 21 from the main body portion 20, and easily removes the prefilter 6 from the cleaning device 30 and the operation method of the handle 73 of the biasing portion 70. Can be recognized. Therefore, the convenience of the air cleaner 1 can be improved.

FIG. 6 is a perspective view showing the inside of the winding roll 50, the dust collecting unit 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 bevel gear 61 (first cross shaft gear), a bevel gear 62 (second cross shaft gear), a spur gear 63 (first parallel shaft gear), a spur gear 64 (second parallel shaft gear), an internal gear A gear 65, a spur gear 66, and a spur gear 67 are provided 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 for fitting into a rotation 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 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 disposed 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. A spur gear 68 provided at one end of the brush body 80 meshes with a spur gear 67.

The winding roll 50 is rotated via the bevel gear 61 and the bevel gear 62 by the driving of the scissors driving motor 100. The brush body 80 is rotated through the spur gear 64, the internal gear 65, the spur gear 66, the spur gear 67, and the spur gear 68 by the rotation of the spur gear 63 integrated with the bevel gear 62. Since the spur gear 63 integral with the bevel gear 62 and the spur gear 64 connected to the brush body 80 mesh with each other, the brush body 80 disposed in parallel to the winding roll 50 can be easily rotated.

At this time, since the internal gear 65 integral 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 arranged. Thereby, the brush body 80 that slides on the pre-filter 6 on the winding roll 50 can be easily placed close to the winding roll 50.

Note that the bevel gears 61 and 62 may be cross-axis gears. Each spur gear may be a parallel shaft gear, and a helical gear or the like may be used.

The main body 20 of the air cleaner 1 is provided with a rotation amount detection unit 110. FIG. 8 is a perspective view of the rotation amount detection unit 110 viewed from the back side of the air cleaner 1. The rotation amount detection unit 110 includes a photo interrupter 111 and a slit disk 112.

The photointerrupter 111 includes a light emitting unit 111a that emits light and a light receiving unit 111b that receives the light emitted from the light emitting unit 111a. The slit disk 112 is provided with a plurality of slits 112a in the circumferential direction at a predetermined cycle. The slit disk 112 is provided concentrically with the spur gear 115 and rotates integrally with the spur gear 115. The slit disk 112 is arranged so that the slit 112a passes between the light emitting unit 111a and the light receiving unit 111b when rotating. The spur gear 115 meshes with the spur gear 116, and the rotation shaft portion of the spur gear 116 is fixed to the rotation shaft portion of the drive motor 100. The spur gear 116 rotates integrally with the drive motor 100.

When the saddle drive motor 100 rotates, the spur gears 115 and 116 and the slit disk 112 rotate. At this time, the photo interrupter 111 detects on / off of light passing through the slit 112a. As a result, the rotation amount detection unit 110 detects the number of pulses (rotation amount) output by the rotation of the slit disk 112. When the photo interrupter 111 does not detect a pulse for a predetermined time (for example, 6 seconds), the control unit (not shown) of the air cleaner 1 determines that the drive motor 100 is out of step.

FIG. 9 is an exploded perspective view of the urging unit 70 of the cleaning device 30. The urging unit 70 includes a rotating body 71 (first rotating body) and a rotating body 72 (second rotating body) housed in

housings

78 and 79 that are screwed together. A sandwiching 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 into the groove portion 71b. Thereby, 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 scissors rotating body 72 houses the spring 75 inside the rotating body 71. One end (inner end) of the spring 75 is clamped by the clamping portion 71 a of the rotating body 71, and the other end (outer end) is attached on the inner peripheral surface of the rotating body 72. When the rotator 71 rotates clockwise with respect to the rotator 72 as viewed from the right side (as viewed from the direction of arrow A), the urging force of the spring 75 increases. That is, when the rotator 72 rotates clockwise with respect to the rotator 71 as viewed from the direction of the arrow A, the urging force of the spring 75 is reduced.

A plurality of claws 72 a are provided at predetermined intervals on the outer peripheral surface on the outer side (right side) of the rod rotating body 72 in the axial direction. A stopper 77 is pivotally supported in the housing 78, and the stopper 77 is biased by a torsion coil spring 77a in a direction in which the rotating body 72 is pressed. 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 the arrow A by the engagement between the stopper 77 and the claw 72a.

An opening 78a is opened on the right side surface of the saddle housing 78, and a cylindrical handle 73 is disposed so as to cover the opening 78a. In the housing 78, a flange 73a having a diameter larger than that of the opening 78a is disposed. The handle 73 and the flange 73a are screwed to the outer wall of the housing 78 with a predetermined gap in the axial direction through the opening 78a. As a result, the handle 73 is rotatably attached to the housing 78.

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

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

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

When the heel handle 73 is rotated clockwise as viewed from the direction of arrow A, the rib 74b engages with the rib 73b and engages with the protrusion of the housing 78. Thereby, the rotation of the handle 73 is restricted.

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

空気 In the air cleaner 1 configured as described above, when the operation is started by operating 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 part 21 is attached to the main body part 20, the blower 10 and the ion generator 11 are driven. Thereby, the air in the living room is sucked from the suction port 3 and flows through the air passage 8. At this time, large dust is collected in the air by the pre-filter 6. Further, air is deodorized by the deodorizing filter 7, and fine dust in the air and fine particles such as PM2.5 are collected by the dust collecting filter 9.

The ions generated by the ion generator 11 are contained in the air. The air containing ions is blown into the living room from one or both of the

outlets

4 and 5. Thereby, the ventilation operation | movement of the air cleaner 1 is performed and the air cleaning of a living room is performed.

FIG. 10 is a flowchart showing the operation of the cleaning device 30. When the predetermined time comes, the cleaning device 30 is driven and the cleaning operation by the cleaning device 30 is started. The cleaning operation is started when, for example, the cumulative operation time of the air cleaner 1 within a predetermined period exceeds a predetermined time. The blower 10 is stopped when the cleaning device 30 is driven.

When the scissor cleaning device 30 is driven, the flag F is substituted for the variable Y in step # 11. As for the flag F, 0 is substituted when the previous cleaning operation of the cleaning device 30 is normally completed, and 1 is substituted when the cleaning operation is stopped while the cleaning device 30 is driven. In

step #

12, 1 is assigned to the flag F.

At step # 13, 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 as viewed from the right side (viewed from the direction of arrow A). As a result, the take-up roll 50 rotates clockwise as viewed from the right side, and the prefilter 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, and the spur gear 68 rotates clockwise when viewed from the right side. Thereby, the brush body 80 rotates clockwise as viewed from the right side. At this time, the bristle bundle 82 of the brush body 80 slides on the prefilter 6 on the winding roll 50. Thereby, 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 winding roll 50 and the rotation direction of the brush body 80 are the same direction. For this reason, the brush bristle bundle 82 of 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 reliably remove dust on the pre-filter 6.

It is desirable that the peripheral speed of the brush body 80 is larger than the peripheral speed of the winding roll 50. Thereby, the contact length in the circumferential direction of the bristle bundle 82 on the prefilter 6 can be made longer than the period in which the bristle bundle 82 contacts, and the bristle bundle 82 can be brought into contact with the prefilter 6 without any gap. .

The brush bristle bundle 82 on the rotating shaft 81 is beaten by the comb portion 93, and dust attached to the brush bristle bundle 82 falls into the container 92.

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

、 At this time, the symbol 6 g (see FIG. 4) on the storage portion 6 c of the pre-filter 6 moves downward and is visually recognized through the suction port 3. Thereby, the user can easily recognize that the cleaning device 30 is being driven. For this reason, it can prevent that a user misidentifies that the air blower 10 stopped by failure. Note that the blower 10 may be operated at a low speed when the cleaning device 30 is driven.

At this time, the moving speed of the pre-filter 6 is preferably about 4 mm / second. Thereby, the torque of the drive motor 100 can be suppressed, and the dust on the prefilter 6 can be reliably removed by the brush body 80.

In step # 14, it is determined whether or not the cleaning device 30 has stopped during driving. For example, the cleaning device 30 stops during driving when the power of the air purifier 1 is turned off by the operation of the operation unit 19, when a power failure occurs, or when the cover unit 21 is removed from the main body unit 20. . When the cleaning device 30 is stopped due to power-off or removal of the cover portion 21, an error is notified in step # 31, and the process proceeds to step # 26. If the cleaning device 30 is not stopped, the process proceeds to step # 15.

In step # 15, it is determined whether or not the drive motor 100 has stepped out. If the drive motor 100 has stepped out, the process proceeds to step # 16. If the drive motor 100 has not stepped out, the process returns to step # 14, and step # 14 and step # 15 are repeated. At this time, the rotation detection unit 110 counts the slits 112a and detects the rotation amount N1 of the drive motor 100.

In step # 16, it is determined whether or not the variable Y is 1. When the variable Y is 1, it indicates that the operation is a restart operation after the cleaning device 30 of the previous operation is stopped during driving, and the process proceeds to step # 19. When the cleaning device 30 is stopped and restarted during driving, the rotation amount detected by the rotation amount detection unit 110 is reset, and the winding of the prefilter 6 by the winding roll 50 is started. If the variable Y is 0, it indicates that the cleaning device 30 operated last time has ended normally, and the process proceeds to step # 17.

In step # 17, it is determined whether or not the rotation amount N1 detected by the rotation detection unit 110 when the drive motor 100 has stepped out is within a predetermined range (for example, 66 times <N1 <96 times). When the rotation amount N1 is within the predetermined range, the process proceeds to step # 18, and when it is outside the predetermined range, the process proceeds to step # 31. When the rotation amount N1 is within the predetermined range, the winding of the prefilter 6 by the winding roll 50 is completed when the drive motor 100 is stepped out.

The case where the saddle rotation amount N1 is smaller than the lower limit value (66 times) of the predetermined range is, for example, a case where the winding of the prefilter 6 by the winding roll 50 is stopped halfway. Further, when the rotation amount N1 is larger than the upper limit value (96 times) of the predetermined range, for example, the winding of the prefilter 6 by the winding roll 50 is not completed.

In step 31, characters or the like indicating an error are displayed on the display unit 17. Thereby, error notification is performed, and the user can easily recognize that the cleaning of the prefilter 6 by the cleaning device 30 has not been completed. Note that the user performs a predetermined treatment based on the error notification. After step # 31, the process proceeds to step # 26.

In step # 18, it is determined whether or not the first cleaning operation is performed after the supply roll 40 is attached to and detached from the cover portion 21. If it is the first cleaning operation, the process proceeds to step # 22. If it is not the first cleaning operation, the process proceeds to step # 21. In step # 21, the rotation amount N2 required for rewinding the prefilter 6 to the supply roll 40 of the drive motor 100 is set to the rotation amount N1. In step # 22, the rotation amount N2 is set to a rotation amount (N1-α, for example, 79 times) smaller than the rotation amount N1 by a predetermined amount α.

In step # 19, it is determined whether or not the rotation amount N1 detected by the rotation amount detection unit 110 when the drive motor 100 is stepped out is greater than a predetermined upper limit rotation amount Nh (for example, 81 times). When the rotation amount N1 is larger than the upper limit rotation amount Nh, the process proceeds to step # 21, and when not larger than the upper limit rotation amount Nh, the process proceeds to step # 20.

In step # 20, the rotation amount N2 is set to the upper limit rotation amount Nh. After step # 20, step # 21, and step # 22, the process proceeds to step # 23.

At step # 23, the drive motor 100 is reversed. Thereby, the bevel gear 61 rotates in a direction opposite to that at the time of winding (clockwise direction in the present embodiment). At this time, the winding roll 50 and the brush body 80 rotate counterclockwise when viewed from the right side.

When winding of the pre-filter 6 by the kite winding roll 50 is completed, the urging force of the mainspring 75 is larger than that before winding. For this reason, when the drive motor 100 is reversed, the rotating body 71 rotates counterclockwise as viewed from the right side surface by the restoring force of the mainspring 75. Thereby, the prefilter 6 is wound around the supply roll 40.

In step # 24, the process waits until the rotation amount detected by the rotation amount detection unit 110 reaches the rotation amount N2. In

step #

25, 0 is assigned to the flag F. In step # 26, the rotation of the drive motor 100 is stopped. Thus, the cleaning operation by the cleaning device 30 ends.

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

In addition, the supply roll 40 to which one end of the prefilter 6 is attached at the time of replacement is attached to the cover portion 21. Then, the lower end of the prefilter 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 unit 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. Thereby, the pre-filter 6 is wound up by 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 prefilter 6.

According to the present embodiment, the step-out of the drive motor 100 is determined based on the detection result of the rotation amount detection unit 110, and when the step-out occurs, the drive motor 100 is reversed. Thereby, the end of winding of the winding roll can be accurately detected. Therefore, the pre-filter 6 (filter) can be sufficiently cleaned.

Further, the rotation amount detection unit 110 includes a photo interrupter 111 and a slit disk 112 that rotates in conjunction with the drive motor 100. When the pre-filter 6 (filter) is taken up by the take-up roll 50, if the rotation amount detection unit 110 does not detect a pulse output by the rotation of the slit disk 112 for a predetermined time, the step-out of the drive motor 100 is detected. Determine. Thereby, the determination of the step-out of the drive motor 100 can be easily realized.

In addition, when the rotation amount detected by the rotation amount detection unit 110 when the drive motor 100 is out of step is out of the predetermined range, an error notification is performed. Thereby, the user can easily recognize that the cleaning of the prefilter 6 by the cleaning device 30 has not been completed.

Further, when the cleaning device 30 is driven for the first time after the supply roll 40 is attached and detached, the rotation amount of the drive motor 100 at the time of reversal is larger than the rotation amount of the drive motor 100 when the drive motor 100 steps out. Make it smaller. Thereby, the slack of the pre-filter 6 after the cleaning operation of the cleaning device 30 can be reduced, and air containing dust can reliably pass through the pre-filter 6.

In addition, when the cleaning device 30 is stopped during driving and restarted, the rotation amount detected by the rotation amount detection unit 110 is reset and winding of the prefilter 6 by the winding roll 50 is started. When the rotation amount N1 detected by the rotation amount detection unit 110 at the end of winding of the prefilter 6 by the drive motor 100 is larger than the predetermined upper limit rotation amount Nh, the drive motor 100 is reversed by the detected rotation amount N1. If it is smaller than the upper limit rotation amount Nh, the drive motor 100 is reversed by the upper limit rotation amount Nh. Thereby, even when the cleaning operation is completed after the driving of the cleaning device 30 is resumed, the prefilter 6 can be reliably rewound onto the supply roll 40.

Further, the brush body 80 is connected to a drive motor 100 that rotationally drives the take-up roll 50, and 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 provide a conventional brush body motor for rotating the brush body 80 separately from the drive motor 100. Therefore, the manufacturing cost of the air cleaner 1 can be reduced.

Moreover, the rotation direction of the winding roll 50 and the rotation direction of the brush body 80 are the same direction. Thereby, 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 reliably remove dust on the pre-filter 6.

It is desirable that the peripheral speed of the brush body 80 is larger than the peripheral speed of the winding roll 50. Thereby, the contact length in the circumferential direction of the bristle bundle 82 on the prefilter 6 can be made longer than the period in which the bristle bundle 82 contacts, and the bristle bundle 82 can be brought into contact with the prefilter 6 without any gap. . Therefore, the dust on the prefilter 6 can be removed more reliably.

In addition, the drive motor 100 is disposed on the main body 20 of the housing 2, and the supply roll 40 and the take-up roll 50 are disposed on the cover 21. Thereby, the cover part 21 can be removed from the main-body part 20, and the pre filter 6 can be replaced | exchanged easily. In addition, although the air cleaner 1 is provided with the cleaning apparatus 30, the clogging of the prefilter 6 may occur depending on the installation location of the air cleaner 1 (for example, a place with a lot of oil stains such as a kitchen). . Even in this case, the prefilter 6 can be easily removed and carefully cleaned.

In addition, a bevel gear 61 (first cross shaft gear) having a fitting hole 61 a that fits the rotation shaft of the drive motor 100, a bevel gear 62 (second cross shaft gear) that meshes with the bevel gear 61, and a bevel 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) that meshes with the spur gear 63 and is connected to the brush body 80. Gear). Thereby, rotation of the winding roll 50 and the brush body 80 by the one drive motor 100 is easily realizable.

Further, since the spur gear 63 connected to the take-up roll 50 is disposed 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. Thereby, the winding roll 50 urged by the urging unit 70 via the prefilter 6 can be reliably rotated 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. The rotation shaft is arranged between the rotation shaft of the spur gear 63 and the rotation shaft of the spur gear 64. Thereby, the brush body 80 that slides on the pre-filter 6 on the winding roll 50 can be easily placed close to the winding roll 50.

In addition, the pre-filter 6 has a ventilation portion 6 b disposed facing the suction port 3 when the cleaning device 30 is stopped, and a storage portion 6 c sent out from the supply roll 40 when the cleaning device 30 is driven. And the symbol 6g which can be visually recognized from the suction inlet 3 is provided on the accommodating part 6c in distinction from the ventilation | gas_flowing part 6b. Thereby, the movement of the pre-filter 6 is easily visually recognized, and the user can easily recognize the cleaning of the pre-filter 6 by the cleaning device 30.

送風 Also, the blower 10 is stopped when the cleaning device 30 is driven. Accordingly, it is possible to prevent the dust immediately after being removed from the prefilter 6 from being sucked into the downstream side of the prefilter 6. Moreover, it can prevent that a user misidentifies that the air blower 10 stopped by failure by the design 6g.

Further, the urging unit 70 of the cleaning device 30 includes a spring 75 that urges the rotating shaft of the supply roll 40 in the direction opposite to the winding direction when the prefilter 6 of the winding roll 50 is wound. Accordingly, when the drive motor 100 is reversed 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 provide a motor for rotating the supply roll 40 in the direction opposite to the winding direction W of the winding roll 50 separately from the drive motor 100. As a result, the manufacturing cost of the air cleaner 1 can be further reduced. Moreover, since the mainspring 75 is used, the prefilter 6 can be wound around the winding roll 50 at a long distance while being biased. Thereby, the freedom degree of the design of the magnitude | size of the pre filter 6 can be raised.

In addition, the urging portion 70 engages the shaft portion of the supply roll 40 and attaches the rotary body 71 (first rotary body) to which one end of the mainspring 75 is attached, and the other end of the mainspring 75 to which the mainspring 75 is attached. It has a rotating body 72 (second rotating body) whose rotation in the direction of decreasing the force is restricted, and a handle 73 that rotates the rotating body 72. Accordingly, when the supply roll 40 is mounted on 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 the dust-containing air can surely pass through the pre-filter 6.

Further, the urging unit 70 includes a connecting member 74 that is disposed between the handle 73 and the rotating body 72 and restricts the rotation of the handle 73 in a direction that reduces the urging force of the mainspring 75, and the connecting member 74 rotates. It rotates integrally with the body 72. Thereby, the rotation of the rotating body 72 in the direction to reduce the urging force of the mainspring 75 can be reliably prevented.

Further, the shaft 41 of the supply roll 40 includes a core member 41a having a groove portion 41b, and a sleeve 41d made of an elastic body having a C-shaped cross section that is fitted around the core member 41a. The bar material 6a is elastically clamped. Accordingly, when the opening 41e of the sleeve 41d is widened, the bar material 6a can be easily detached from the shaft 41. Further, the sleeve 41d can prevent the bar material 6a from falling off the shaft 41. The same applies to the winding roll 50.

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 winding roll 50. Thereby, the bar member 6a can be easily attached to and detached from the

shafts

41 and 51 while ensuring the strength of the

shafts

41 and 51 sufficiently.

Second Embodiment
Next, a second embodiment of the present invention will be described. FIG. 11 shows a side view of the support member of the cover part of the air cleaner of the present embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. 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.

At the front end portion of the support member 49 (see FIG. 3) on the right side of the supply roll 40 of the heel cover portion 21, a resin-made rotation plate 400 that rotates in the vertical direction is provided. The shaft portion 401 of the rotating plate 400 is arranged to be offset rearward from the center of the rotating plate 400 in the front-rear direction. Accordingly, as shown in FIG. 11, when the supply roll 40 is not attached on the support member 49, the front end portion of the rotating plate 400 protrudes forward from the support member 49. For this reason, if it is going to attach the cover part 21 to the main-body part 20 in the state in which the supply roll 40 is not attached to the cover part 21, the front-end part of the rotation board 400 will interfere with the main-body part 20. FIG. Therefore, forgetting to attach the supply roll 40 to the cover part 21 can be easily prevented.

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 collides with the rear end portion of the rotating plate 400, and the rotating plate 400 rotates upward. Accordingly, the front end portion of the rotating plate 400 is retracted rearward, and interference between the rotating plate 400 and the main body portion 20 is prevented when the cover portion 21 is attached to the main body portion 20.

Note that the present embodiment can provide the same effects as those of the first embodiment.

<Third Embodiment>
Next, a third embodiment of the present invention will be described. FIG. 13: has shown the side view of the support member of the cover part of the air cleaner of this embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. 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 heel support member 49 includes a fixed portion 49a and a moving portion 49b. A spring 49 c is provided at the rear end of the moving part 49 b, and one end of the spring 49 c is attached to the front surface of the cover part 21. At this time, the front end portion of the moving portion 49b is configured to protrude forward from the fixed portion 49a with the spring 49c extended. Thereby, as shown in FIG. 13, when the supply roll 40 is not attached on the support member 49, the front end part of the moving part 49b protrudes ahead of the fixed part 49a. For this reason, if it is going to attach the cover part 21 to the main-body part 20 in the state in which the supply roll 40 is not attached to the cover part 21, the front-end part of the moving part 49b will interfere with the main-body part 20. FIG. Therefore, forgetting to attach the supply roll 40 to the cover part 21 can be easily prevented.

On the other hand, as shown in FIG. 14, when the supply roll 40 is mounted on the support member 49, the supply roll 40 in contact with the fixed portion 49a moves the moving portion 49b backward. Accordingly, the front end portion of the moving portion 49b is retracted 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.

In the present embodiment, the same effect as in the first embodiment can be obtained.

In the second embodiment and the third embodiment, a photo interrupter (not shown) may be provided instead of the magnet 23 and the hall element of the first embodiment. The photo interrupter has a light emitting portion and a light receiving portion which face each other. When the light receiving unit detects that the light traveling from the light emitting unit to the light receiving unit is blocked by the rotating plate 400 of the second embodiment protruding forward from the support member 49 or the moving unit 49b of the third embodiment. The driving of the blower 10 is prohibited. Thereby, the ventilation operation | movement of the air cleaner 1 in the state in which the cover part 21 is not attached to the main-body part 20 can be prevented.

<Fourth embodiment>
Next, a fourth embodiment of the present invention will be described. FIG. 15 shows a plan view of the prefilter of the air cleaner of the present embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. In the present embodiment, the configuration of the prefilter 6 is different from that of the first embodiment. Other parts are the same as those in the first embodiment.

The sheet-like prefilter 6 is formed by arranging the first area A1 to the fourth area A4 in the winding direction W. The first region A1 is a region where the mesh density is low, the second region A2 is the 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 where the fragrance is attached to the mesh. It has become an area.

Moreover, the air cleaner 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 odor components in the air in the room.

In the air cleaner 1 having the above configuration, for example, when it is determined that the dust concentration in the air is low based on the detection result of the dust sensor, the drive motor 100 is driven to rotate the take-up roll 50, and the first area A1 is It is arranged facing the inlet 3. Thereby, the ventilation efficiency of the air cleaner 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. Arranged. Note that the area disposed facing the suction port 3 can be determined based on the length of the first area A1 to the fourth area A4 in the winding direction W 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 to face.

By the above, since the area | region of the pre-filter 6 suitable for the state of the air in a living room faces the suction inlet 3, the usability of the air cleaner 1 can be improved.

In the present embodiment, the same effect as in the first embodiment can be obtained. The prefilter 6 is formed with the first region A1 to the fourth region A4 aligned in the winding direction W. Thereby, since the area | region of the pre filter 6 suitable for the state of the air in a living room faces the suction inlet 3, the usability of the air cleaner 1 can be improved.

Note that the first region A1 to the fourth region A4 may be selected by operating the operation unit 19 by the user.

<Fifth Embodiment>
Next, a fifth embodiment of the present invention will be described. FIG. 16 is a perspective view of the presser member of the prefilter of the air cleaner according to the present embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. In this embodiment, the structure of the pressing member 22 is different from that of the first embodiment. Other parts are the same as those in the first embodiment.

The holding member 22 of the present embodiment has only ribs 22b extending in the winding direction W (vertical direction in the present embodiment) of the prefilter 6 and is in a direction orthogonal to the winding direction W (horizontal direction in the present embodiment). There are no extending ribs. Thereby, the fall of the dust by the rib extended in the direction orthogonal to the winding direction W sliding on the pre-filter 6 can be prevented.

において In the first to fifth embodiments, the supply roll 40 and the take-up roll 50 are arranged in the cover part 21, but instead, they may be arranged in the main body part 20.

清掃 In the cleaning operation of the air cleaner 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 lower than the rewinding speed to the supply roll 40, the rewinding speed is increased while the dust on the prefilter 6 is removed, thereby shortening the cleaning operation time. it can.

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

DESCRIPTION OF SYMBOLS 1 Air cleaner 2 Case 3

Suction inlet

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 First branch passage 8b Second branch passage 9 Dust collection filter 10 Blower 11 Ion generator 12

Damper

14, 15 Wind direction plate 17 Display part 20 Main part DESCRIPTION OF SYMBOLS 21 Cover part 22 Holding member 23 Magnet 30 Cleaning apparatus 40 Supply roll 41 Shaft 41a Core material 41d Sleeve 50 Winding roll 60 Gear unit 61 Bevel gear (1st cross shaft gear)
62 Bevel gear (second cross shaft gear)
63 Spur gear (first parallel shaft gear)
64 Spur gear (second parallel shaft gear)
65 Internal gear 66 Spur gear (third parallel shaft gear)
70 urging unit 71 rotating body (first rotating body)
71a Holding unit 72 Rotating body (second rotating body)
72a Claw 73 Handle 74 Connecting member 75 Spring 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 part 92 Container 93 Comb part 100 Drive motor 110 Rotation Quantity detection unit 111 Photo interrupter 112 Slit disk 200 Humidification unit 201 Tray 202 Humidification filter 300 Tape-like member 400 Rotating plate 401 Shaft part SP space

Claims

A housing that opens the inlet and the outlet, an air passage that connects the inlet and the outlet, a blower that is arranged in the air passage, and a filter that faces the inlet In an air cleaner comprising a cleaning device for cleaning the filter,
The cleaning device has a sheet-like filter wound around the supply roll, a winding roll that winds up the filter, a drive motor that rotates the winding roll, and the supply at the time of winding the winding roll An urging unit that urges the rotation shaft of the roll in a direction opposite to the winding direction, a brush body that slides on the filter when the winding roll rotates, and a rotation amount detection unit that detects the rotation amount of the drive motor. And
An air purifier characterized by determining step-out of the drive motor based on a detection result of the rotation amount detection unit, and inverting the drive motor when step-out occurs.
The rotation amount detection unit includes a photo interrupter and a slit disk that rotates in conjunction with the drive motor,
When the filter is wound by the winding roll, if the rotation amount detection unit does not detect a pulse output by the rotation of the slit disk for a predetermined time, it is determined that the drive motor is out of step. The air cleaner according to claim 1.
The air cleaner according to claim 1 or 2, wherein an error notification is performed when a rotation amount detected by the rotation amount detection unit when the drive motor has stepped out is outside a predetermined range.
An attachment / detachment sensor for detecting attachment / detachment of the supply roll;
When the cleaning device is driven for the first time after the supply roll is attached or detached, the rotation amount of the drive motor when the drive motor is reversed is the rotation amount of the drive motor when the drive motor is stepped out. The air purifier according to any one of claims 1 to 3, wherein the air cleaner is smaller than the above.
When the cleaning device is stopped during driving and restarted, the rotation amount detected by the rotation amount detection unit is reset, and winding of the filter by the winding roll is started.
When the rotation amount detected by the rotation amount detection unit at the end of winding of the filter by the drive motor is larger than a predetermined rotation amount, the drive motor is reversed by the detected rotation amount, and the rotation amount is larger than the predetermined rotation amount. The air cleaner according to any one of claims 1 to 4, wherein when it is small, the drive motor is reversed by the predetermined rotation amount.