JP6696557B2 - Air cleaner - Google Patents

Description

  The present invention relates to an air purifier that purifies indoor air.

  Conventionally, a casing, an outside air suction opening formed in the casing, an outside air mixing chamber communicated with the outside air suction opening, a dust removal / sterilization chamber communicated with the outside air mixing chamber, and a dust removal / sterilization chamber. A dust removal / sterilization cartridge provided, a dust removal / sterilization air mixing chamber communicated with the dust removal / sterilization chamber, a deodorization chamber communicated with the dust removal / sterilization air mixing chamber, and a deodorization cartridge provided in the deodorization chamber. , A clean deodorizing air mixing chamber that communicates with the deodorizing chamber, a clean deodorizing air discharging opening that communicates with the clean deodorizing air mixing chamber, and a cartridge replacement opening that communicates with the dust removing / sterilizing chamber and the deodorizing chamber, There is an air cleaner provided with a door portion arranged in the cartridge exchange opening, and a moving portion such as a caster provided in the lower portion of the casing (see, for example, Patent Document 1).

JP-A-8-112336

  However, in the conventional configuration, the direction of the air purifier cannot be automatically changed, so that there is a problem that the user needs to directly change the direction of the casing when he wants to change the blowing direction of the purified air.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide an air cleaner having a configuration capable of automatically changing the direction of the main body.

The air purifier according to the present invention includes a main body case, a person detection device provided in the main body case to detect the presence or absence of a person, and an auto-turn unit that changes the direction by rotating the main body case about a vertical rotation axis. When the air purification apparatus for chromatic and control means for controlling the rotation of the auto-turn unit based on the detection result of the human detection device, and human detection device, and a motor for changing the sensor, the orientation of the sensor By driving the motor and changing the direction of the sensor, the presence or absence of a person corresponding to the direction in which the sensor faces is detected, and the control means rotates the auto turn unit based on the detection result of the person detecting device to rotate the main body case. The front of the unit is controlled to face the direction in which people are present, and the main body case is equipped with multiple fan units that generate a suction force that takes in indoor air from the outside and an air cleaning filter that cleans the indoor air taken from the outside. The plurality of fan units are arranged so that the axial direction of the rotary shaft and the suction port face forward and suck air in from the front, and are arranged in a vertical positional relationship when viewed from the front. It is a thing.

  ADVANTAGE OF THE INVENTION According to this invention, the air cleaner which can change the direction of a main body automatically can be provided.

Perspective view of air purifier M AA sectional view of the air cleaner M in FIG. Exploded perspective view of the air purifier M 1 Exploded perspective view of the air purifier M 2 Perspective view of auto turn unit 40 (A) Plan view of the auto-turn unit 40 (b) BB sectional view in (a) Exploded perspective view of the auto turn unit 40 Exploded perspective view of the upper unit 50 Exploded perspective view of the human detection device 55 Sectional view of the human detection device 55 Schematic diagram showing the vertical viewing angle of the infrared sensor Image diagram of rotation drive angle of human detection device Conceptual diagram corresponding to the position when driving the human detection device

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals, and overlapping description will be appropriately simplified or omitted.

Embodiment.
With reference to FIGS. 1 to 4, an air cleaner M according to the present embodiment includes a main body case 10, a fan unit 20, a substrate unit 30, an auto turn unit 40 that is a rotating mechanism that changes the direction of the main body case 10, and an upper unit. 50, an air purifying filter 60, a front cover 70 for covering the front surface, a side cover 80 for covering the left and right side surfaces, a rear cover 90 for covering the rear surface, and components associated therewith.

The main body case 10 is configured such that a front main body case 11 forming a front side and a rear main body case 12 forming a rear side are aligned in front and back and connected to each other.
The front main body case 11 has a rectangular shape that is long in the vertical direction when viewed from the front, and is provided with an upper partition 11a and a lower partition 11b that are wall surfaces that partition the inside into a front side and a rear side.

The upper partition 11a partitions the upper side inside the front body case 11, and has a circular upper opening 111a. The lower partition 11b partitions the lower side of the inside of the front body case 11, and has a circular lower opening 111b. The upper opening 111a and the lower opening 111b are openings that penetrate in the front-rear direction. Further, the upper partition 11a is located in front of the lower partition 11b.
Further, on the front surface of the front main body case 11, there is opened a sensor opening 11c which is a position where a person detecting device 55 described later faces. The sensor opening 11c is located on the upper side of the front surface of the front body case 11 and in the center of the left-right width.

Next, the rear main body case 12 has a rectangular shape that is long in the vertical direction when viewed from the front, and has an upper scroll housing 12a on the upper side and a lower scroll housing 12b on the lower side.
These scroll housings 12a and 12b are constituted by partition walls that stand forward from a wall surface 12x that partitions the front and rear of the rear main body case 12, and have a scroll shape opening toward the front and an upward opening 121a opening toward the upper side. , 121b are formed respectively.

The upper scroll housing 12a is located in front of the lower scroll housing 12b, and the space adjacent to the rear of the upper opening 121a communicates with the upper opening 121b via the space behind the upper scroll housing 12a.
Further, between the wall surface 12x partitioning the front and rear of the rear body case 12 and the space between the upper scroll housing 12a and the lower scroll housing 12b, there is formed a space portion 12c having an opening facing sideways.

Further, inside the upper scroll housing 12a, an upper recess 122a, which is a circular recess opening toward the front, is formed. Similarly, inside the lower scroll housing 12b, a lower recess 122b, which is a circular recess that opens toward the front, is formed.
Since the space 12c is located between the upper and lower scroll housings 12a and 12b, the distance between the space 12c and the upper recess 122a is equal to the distance between the space 12c and the lower recess 122b. Or there is no big difference.

  Next, the fan unit 20 includes a motor 21, a motor cover 22 that covers the motor 21, and a blade 23 that is fixed to a rotation shaft 21 a of the motor 21. The fan unit 20 is a centrifugal multi-blade fan such as a sirocco fan that takes in air from the rotation axis direction (front) and blows it out in the radial direction by driving the motor 21 and rotating the blades 23.

Next, the board unit 30 includes a printed wiring board 31 (hereinafter, referred to as a board 31) on which electronic components are mounted, a first board case 32 made of a resin that houses the board 31 therein, and the board 31. It has a second substrate case 33 made of metal that accommodates the first substrate case 32 held therein.
The board unit 30 constitutes a control means for controlling the operation of various electric parts such as a sensor and a motor constituting the air cleaner M based on inputs from the operation section and various sensors.
The printed wiring board 31 forming the board unit 30 may be a power supply board, or a microcomputer serving as control means may be provided on an operation board 54a forming an operation display unit 54, which will be described later.

Next, the auto turn unit 40 will be described with reference to FIGS.
The auto turn unit 40 includes a base 41, a bottom body case 42 that is a bottom portion connected to the body case 10, an auto turn shaft 43 that rotatably supports the bottom body case 42, and a bottom body case 42. A rotary drive unit 44 that rotates with respect to the base 41, a rotational position detection unit 45 that detects the rotational position of the bottom body case 42, a sliding plate 46, a sliding plate retainer 47, and a base platform side wheel 48. , A main body side wheel 49.

  The base table 41 is a part that serves as a bottom part that supports the entire air purifier M, has an outer shape of a rectangular shape, and has a base table recess 41a that is a recess that opens in a circle inward. A central convex portion 41b, which is a projecting portion having an open central portion, is formed in the center of the base stand concave portion 41a, and an auto-turn shaft 43 is provided on the central convex portion 41b.

  The auto turn shaft 43 is formed with a through hole 43a extending vertically through the center thereof, and the central convex portion 41b is located inside the through hole 43a in a state of being attached to the central convex portion 41b. The auto turn shaft 43 is attached to the base 41 by fitting a through hole 43a that opens at the center of the auto turn shaft 43 into the central convex portion 41b. The through hole 43a and the opening of the central convex portion 41b communicate with each other.

The central convex portion 41b serves as an opening for guiding the inside of the main body case through the power cord 41c for obtaining electric power from the outside. Then, the power cord 41c is connected to the printed wiring board 31.
By thus guiding the power cord 41c into the main body case 10 through the central convex portion 41b, even if the main body case 10 is rotated by the auto turn unit 40, the power cord 41c is not easily affected by this rotation.

Further, a partition 413a is provided in the base stand recess 41a so as to project from the bottom surface. The partition 413a has a shape of an arc drawn with the center of the base stand recess 41a as the origin, and three slits 414a are formed at equal intervals. The center of the base stand recess 41a is the center of rotation of the bottom body case 42.
Further, a rack gear 415a that spreads in a fan shape along the opening edge is formed at the opening edge of the base stand recess 41a on the opposite side of the partition 413a with the auto-turn shaft 43 interposed therebetween. Furthermore, a plurality of base-side wheels 48 are provided on the opening edge of the base-side recess 41a so as to rotate in the tangential direction of a circle drawn with the center of the base-side recess 41a as the origin.

Next, the bottom body case 42 has an opening serving as a bearing 42a formed at the center, and the outer shape is a cup shape that can be inserted into the inside of the base stand recess 41a. A flange 42b is formed to extend. The bottom body case 42 is provided with a rotation position detecting means 45, a rotation drive unit 44, a sliding plate 46, and a body side wheel 49.
The rotational position detecting unit 45 has a light emitting unit and a light receiving unit which face each other, and three photo interrupters, which are sensors capable of detecting light from the light emitting unit, are used. The control means determines the rotational position based on the combination of signals when the three photo interrupters detect light.

  The three photo interrupters constituting the rotational position detecting means 45 are arranged such that the positions of the gaps where the light emitting portion and the light receiving portion face each other from the rotation center of the bottom body case 42 (center of the opening of the bearing 42a) are equal to each other. It is provided in a photo interrupter mounting recess 42d formed in the bottom body case 42. The photo interrupter mounting recess 42d is a recess that opens downward.

The distance from the rotation center of the bottom body case 42 (center of the opening of the bearing 42a) to the gap where the light emitting portion and the light receiving portion of the photo interrupter face each other is separated from the center of the auto turn shaft 43 provided on the base 41. It is equal to the distance to 413a, and the center of the adjacent photo interrupter is configured to be equal to the interval between the adjacent slits formed in the partition 413a.
Further, the gap where the light emitting portion and the light receiving portion of the photo interrupter face each other is configured to open downward.

  Next, the rotary drive unit 44 includes a stepping motor 44a serving as a drive source, a pinion gear 44b attached to the rotary shaft 441a of the stepping motor 44a, a bearing holding plate 44c that receives the rotary shaft 441a of the stepping motor 44a, and a stepping motor. It has a motor case 44d integrally formed with 44a.

  The rotary drive unit 44 configured as described above is arranged from the lower side of the bottom main body case 42 through the screw holes formed in the motor case 44d and the bearing holding plate 44c with the rotary shaft 441a facing downward. It is screwed. By mounting the rotary drive unit 44 in this manner, the pinion gear 44b is located below the bottom body case 42.

Next, the sliding plate 46 has a ring shape in which a sliding plate opening 46a is provided inside a circular plate, and a flange recess 46b is formed on the upper surface to maintain the strength of the circular plate. ing.
The sliding plate 46 formed in this manner is fixed to the bottom main body case 42 with screws or the like in a state where the sliding plate opening 46a is combined with the flange 42b of the bottom main body case 42.

Next, the main body side wheel 49 is in a state in which a part of the wheel 49 is projected downward from the bottom main body case 42 in the inside of the wheel housing 42c which is a recess formed in the lower surface of the bottom main body case 42 and opening downward. It is rotatably attached.
A plurality of body side wheels 49 are attached to the bottom body case 42, and each body side wheel 49 is arranged at the same distance from the rotation center of the bottom body case 42 (center of the opening of the bearing 42a). There is.

Each part of the above auto turn unit 40 is assembled as follows.
As described above, the bottom main body case 42 provided with each part is attached to the base stand 41 by attaching the bearing 42a so as to be rotatably supported by the auto-turn shaft 43 attached to the base stand 41.
At this time, the pinion gear 44b of the rotary drive unit 44 provided on the bottom body case 42 is in a state of meshing with the rack gear 415a provided on the base 41. Further, in the rotational position detecting means 45, the partition 413a is located in the gap between the light emitting portion and the light receiving portion which face each other.

A stopper 42e is attached so that the bearing 42a does not come off from the auto turn shaft 43. The stopper 42e prevents the bottom main body case 42 from dropping upward by entering the groove portion 431a formed on the side surface of the auto-turn shaft 43 from the side surface opening 421a of the bearing 42a and engaging with the groove portion 431a.
Further, by attaching the slide plate retainer 47 that suppresses the peripheral edge of the slide plate 46 from above to the base 41, it is possible to suppress the fluctuation when the side of the bottom body case 42 rotates.

Thus, in the state where the bottom body case 42 is attached to the base 41, the body-side wheels 49 contact the base 41 and support the bottom body case 42. Further, the base stand side wheel 48 contacts the sliding plate 46 and supports the bottom body case 42.
These wheels roll when the bottom body case 42 rotates with respect to the base 41, reducing the resistance between both members and allowing the bottom body case 42 side to rotate smoothly.

Further, the distance from the center of rotation of the bottom body case 42 (center of the opening of the bearing 42a) to the gap where the light emitting portion and the light receiving portion of the photo interrupter face each other is separated from the center of the auto turn shaft 43 provided on the base 41. Since it is equal to the distance to 413a, the bottom main body case 42 is rotatable with the partition 413a positioned between the light emitting portion and the light receiving portion.
Therefore, by operating the stepping motor 44a with the base 41 placed on the floor, the pinion gear 44b meshing with the rack gear 415a rotates, and the bottom body case 42 side rotates with respect to the base 41.

In this way, when the bottom body case 42 rotates and changes its direction, the photo interrupter, which is the rotational position detecting means 45, rotates together with the bottom body case 42 with the partition 413a sandwiched between the light emitting portion and the light receiving portion.
Then, the rotation changes the positions of the rotation position detection unit 45 and the partition 413a, so that the slit 414a is located between the light emitting unit and the light receiving unit depending on the rotation position, and the light receiving unit detects light from the light emitting unit.
The control means determines the rotational position (direction) of the bottom main body case 42 (main body case 10) based on the combination of the states detected by the light receiving portions of these individual photo interrupters.

Next, the upper unit 50 will be described with reference to FIGS. 1 to 2 and 8.
The upper unit 50 includes a frame 51 that serves as a skeleton of the upper unit, a louver 52 that changes the direction of the clean air to be blown, a louver drive motor 53 that changes the direction of the louver 52, an input of various setting conditions of the air cleaner M, and an air cleaner. It has an operation display unit 54 for displaying the state of M and a person detection device 55 having a sensor for detecting the presence of a person.

  The frame 51 has a rectangular shape when viewed from above, and a clean air outlet 51a, which is a rectangular opening facing upward, is formed on the rear side, and the front side of the outlet 51a is closer than the peripheral edge of the outlet 51a. It is a low step portion 51b, and a front surface recess 51c that is recessed rearward is formed on the front surface. A human detection device 55 described later is provided in the front recess 51c.

Next, the louver 52 changes the direction of the purified air blown out from the blowout port 51a, and two louvers 52 are provided side by side so as to be bridged to the left and right of the blowout port 51a, The left and right are rotatably supported by the inner wall of the outlet 51a.
A louver drive motor 53 for moving the louver 52 to change its direction is provided near the louver 52 on the side surface of the frame body 51.

  Next, the operation display unit 54 includes an operation board 54a on which electronic parts such as LEDs, which are the switch 541s and the light emitting section 541h, are mounted, an optical path opening 541b for guiding the light of the LED, and a link 542b for pressing a switch on the operation board 54a. The lower operation frame 54b provided, the display opening 542c through which the light of the LED passes and the upper operation frame 54c provided with the push button 543c, and the push button opening where the function and description of the LED lamp are printed and the position of the push button 543c. The sheet 541c is formed with a sheet 541d.

In each of these parts, a step portion 51b is provided with an operation board 54a, a lower operation frame 54b is provided on the operation board 54a, an upper operation frame 54c is provided on the lower operation frame 54b, and an upper surface of the upper operation frame 54c. Is provided with a sheet 541c.
In a state in which each part is provided in this manner, the push button opening 541d formed in the seat 541c has a vertical positional relationship with the push button 543c, and the push button 543c and the link 542b provided on the lower operation frame 54b are provided with a vertical position. There is a positional relationship, and the link 542b and the switch 541s have an upper and lower positional relationship.
Also, the function and description of the LED lamp is printed in a vertical positional relationship with the display opening 542c, the display opening 542c is in a vertical positional relationship with the optical path opening 541b, and the light emitting portion 541h is inside the optical path opening 541b. LEDs are located.

With this configuration, when the push button 543c is pressed, the link 542b provided on the lower operation frame 54b is pressed down, and the switch 541s mounted on the operation board 54a is pressed.
Further, since the function / description of the LED mounted on the operation board 54a, the optical path of the lower operation frame 54b, and the lamp of the sheet 541c are vertically aligned, the function / description display printed on the sheet 541c corresponds to the corresponding LED. The state of the air purifier M is indicated by turning on and off.

Here, in the operation substrate 54a, the center portion of the left and right width is formed by partially cutting out a predetermined region in a semicircular shape from the front side, in other words, by making the outer shape concave, the substrate recess 541a is formed. Are formed. The substrate recess 541a is located above the front recess 51c when the operation substrate 54a is provided on the step 51b.
Here, the notches that form the substrate recess 541a are configured so as not to overlap with the switches and LEDs provided on the operation substrate 54a in the front and rear.

Next, in the lower operation frame 54b, the center portion of the left and right width is formed by cutting out a predetermined region in a semicircular shape from the front side, in other words, by making the outer shape concave, the operation frame recess 543b is formed. It is formed. The operation frame recess 543b is located above the front recess 51c when the lower operation frame 54b is provided on the step 51b.
Here, the cutouts that form the operation frame recess 543b are configured so as not to overlap with the openings formed in the lower operation frame 54b, which are the optical paths of the LEDs and the openings where the links of the switches are located.

Next, the person detection device 55 will be described with reference to FIGS.
The human detection device 55 has a case 55a, an infrared sensor 55b housed inside the case 55a, and a sensor drive motor 55c connected to the case 55a.
The case 55a includes a housing 551a and a lid 552a. The housing 551a has a tubular shape, and has a lower opening 553a that opens downward, an infrared ray intake opening 554a that opens forward, a shaft connecting portion 555a to which the rotation shaft of the sensor drive motor 55c connects, and a case 55a. A rotation restricting rib 556a that restricts the rotation angle of is formed.

The rotation restricting ribs 556a are formed so as to respectively project from the shaft connecting portion 555a in the left-right direction, and when the case 55a is rotated by the sensor drive motor 55c, the rotation restricting rib 556a should abut against the frame body 51 that is a portion to which the human detection device 55 is attached. Thus, the rotation angle of the case 55a is regulated.
The position where the left (not shown) rotation restricting rib 556a abuts the frame 51 corresponds to a left abutting position 0 described later. The position where the right rotation restricting rib 556a abuts the frame 51 corresponds to the right abutting position 4.

The infrared sensor 55b is inserted into the case 55a thus configured while being held by the sensor holding frame 551b, and the lower opening 553a is closed by the lid 552a.
The portion of the sensor holding frame 551b that faces the infrared capturing opening 554a is made of a member that transmits infrared rays. In this state, the infrared sensor 55b can detect infrared rays that enter the infrared capturing opening 554a of the case 55a. Will be placed.

The sensor drive motor 55c is for moving the case 55a to change the direction of the infrared sensor 55b. A stepping motor is used, and the shaft connecting portion 555a formed on the upper part of the case 55a so that the rotating shaft 551c faces vertically downward. Connect with.
The human detection device 55 fixed in this way has a vertically long shape in which a sensor drive motor 55c and a case 55a holding an infrared sensor 55b inside are vertically connected.

In the person detecting device 55 configured as described above, the direction of the case 55a is changed by the driving of the drive motor 55c, and the direction of the infrared sensor 55b is changed. The infrared sensor 55b is configured so that it can be rotationally driven in the horizontal direction with an angular width of about 150 degrees.
Referring to FIG. 12, the angle from the left stop position 1 to the right stop position 3 of the infrared sensor 55b is about 150 degrees, the angle from the left abutting position 0 to the left stop position 1 and the right abutting position 4 to the right stop position. The angle to position 3 is set to about 3 degrees. As a result, the infrared sensor 55b is configured so as not to rotate from the left abutting position 0 to the right abutting position 4 by an angle of about 156 degrees or more.

  The infrared sensor 55b detects infrared rays from the target object. Eight light-receiving elements (not shown) are provided in the vertical direction, and as shown in FIG. 11, a target object (target area) is divided into eight areas A1 to A8 having different heights. Can be detected.

The person detecting device 55 configured as described above is repeatedly driven in the horizontal direction in a range of about 150 degrees to scan the temperature in the room, and the presence or absence of a person and the person seen from the air purifier based on the temperature detection result. The direction of existence of is determined by the control means.
The drive motor 55c uses a stepping motor capable of accurately adjusting the drive angle so that the direction in which a person is present can be accurately determined. The stepping motor rotates an angle according to the input pulse number.

  The drive motor 55c is set to drive an angle according to the number of input pulses, and is driven by α degrees per pulse, for example. That is, when 100 pulses are input per second, the image is rotated by (100 × α) degrees.

The upper unit 50 having the above-mentioned parts is assembled as follows.
An operation board 54a is provided on the upper surface of the step 51b on the front side of the frame 51. Next, a lower operation frame 54b is provided so as to cover the operation board 54a. Then, on the upper surface of the lower operation frame 54b, a sheet 541c on which an explanation of the operation display unit 54 and the like are written is provided.
As described above, the upper surface of the operation display unit 54 (the upper surface of the sheet 541c) provided on the frame body 51 has substantially the same height as the outlet 51a, and when the louver 52 is closed and covers the outlet 51a, the louver 52 is not covered. The top surface is the same height.

As described above, in the state where the operation board 54a and the lower operation frame 54b are provided to the frame body 51, the front surface recessed portion 51c, the board recessed portion 541a, and the operation frame recessed portion 543b of the frame body 51 are vertically connected. Therefore, the human detection device 55 is provided inside these recesses.
In the case of the present embodiment, the case 55a is located inside the front recess 51c, and the sensor drive motor 55c is located inside the substrate recess 541a and the operation frame recess 543b. The human detection device 55 is fixed to the frame 51 by screwing and is electrically connected to the control means.

Further, the infrared sensor 55b of the human detection device 55 is mounted inside the case 55a by laying it at a predetermined angle with respect to the vertical direction, and is directed obliquely upward from the front.
The mounting angle of the infrared sensor 55b is set so that, for example, in the air purifier M, when the infrared sensor 55b is provided at a position where the height from the floor surface is about 80 cm, it is directed upward by θ = 14 ° from the horizontal. Has been done.
By arranging in this manner, the infrared sensor 55b can detect the head of an adult (height 170 cm) standing from a child (sitting height 65 cm) sitting at a location about 1.0 [m] away from the air purifier M. You can

As described above, by arranging the recesses (51c, 541a, 543b) in the upper unit 50 so as to be vertically connected, and by providing the human detection device 55 in the space formed by these recesses, the human detection device 55 is placed above. It is possible to further reduce the amount of the unit 50 protruding downward.
That is, the air purifying filter 60 and the human detection device 55, which will be described later, do not vertically overlap with each other, or the amount of overlapping can be further reduced, and the air purification filter 60 mounted in the downward direction of the human detection device 55. It is possible to make the area in which is provided larger.
In addition to this, it is possible to further reduce the amount of the human detection device 55 protruding in the front direction of the upper unit 50.

Next, the air cleaning filter 60 will be described with reference to FIGS.
The air cleaning filter 60 includes a pre-filter 61, a HEPA filter 62, and a deodorizing filter 63.
The pre-filter 61 is for removing relatively large dust and the like from the air. The HEPA filter 62 removes dust (fine particles), bacteria, viruses, etc., which could not be removed by the pre-filter 61 from the air. The deodorizing filter 63 is for adsorbing and decomposing and removing odorous components and volatile organic compounds (VOC) from the air flow that has passed through the pre-filter 61 and the HEPA filter 62.

Next, referring to FIGS. 3 and 4, the covers that form the outer shell of the air purifier M will be described.
The outer contour of the air purifier M includes a front cover 70, left and right side covers 80, and a rear cover 90.
The front cover 70 has a vertically long rectangular shape, and a left and right long recessed portion 71 is formed on the front surface. A sensor opening 72 facing the human detection device 55 is opened at the center of the recess 71 on the left and right.

The concave portion 71 is a concave portion provided to secure the visual field of detection of the infrared sensor 55b when the direction of the infrared sensor 55b is changed by the sensor drive motor 55c in a state where the human detection device 55 is located in the sensor opening 72. is there. When the person detecting device 55 is located in the sensor opening 72, the front surface of the person detecting device 55 is substantially flush with the front surface of the front cover 70.
The concave portion 71 has a fan shape larger than about 150 degrees around the sensor opening 72 in accordance with the rotation angle of the infrared sensor 55b. As a result, when the human detection device 55 operates and the case 55a rotates, the front cover 70 does not interfere with the detection visual field of the infrared sensor 55b.
The sensor opening 72 is provided at a position of about 80 cm from the floor when the front cover 70 is attached to the main body case 10.

  Next, the left and right side covers 80 have a vertically long rectangular shape, and have a hand-holding recess 81 on a side surface, a side surface recess 82 having a vertical width on the front side, and stand up inward on the rear side. Engaging claws 83 are formed. The engaging claw 83 has a plate shape, and an engaging claw opening 83a opens inside. Further, a screw opening 84 penetrating in the front-rear direction is opened on the front side.

Next, the rear cover 90 has a vertically long rectangular shape, and a plurality of engagement receiving portions 91 with which the engagement claws 83 engage are formed on the left and right sides. The engagement receiving portion 91 is composed of a slit-shaped opening (slit opening 91a) that faces sideways, and a convex portion 91b that is a surface that faces the front of the rear cover 90 and that is formed near the slit opening 91a.
The front cover 70, the side cover 80, and the rear cover 90 described above are all configured to have the same height.

The above units and parts are assembled in the following manner to form the air cleaner M.
With reference to FIGS. 2 to 4, the fan unit 20 is provided by attaching the motor 21 to the upper recess 122a and the lower recess 122b of the rear body case 12, respectively.
The motor 21 is attached to each of the upper recess 122a and the lower recess 122b with the axis of the rotary shaft facing forward.
That is, the fan unit 20 is provided such that the suction port of the blade 23 faces forward, sucks air from the front, and blows out an airflow toward the scroll housings 12a and 12b located in the circumferential direction in the radial direction of the blade 23. Be done.
The fan unit 20 is arranged so as to have a vertical positional relationship in the vertical (vertical) direction when viewed from the front.

Next, the front main body case 11 is connected to the rear main body case 12 so as to cover the front surface. That is, the front main body case 11 and the rear main body case 12 are fitted to each other in the front-rear direction and fixed by screwing or the like to form the main body case 10.
Here, when the front main body case 11 and the rear main body case 12 are fitted together in the front and rear direction and fixed, the bottom main body case 42, which is a rotating part of the auto turn unit 40, is sandwiched between the lower ends of the front main body case 11 and the rear main body case 12. By being bent, the auto turn unit 40 can be attached to the body case 10.
That is, the bottom main body case 42 is provided in the space below the main body case 10 in which the front main body case 11 and the rear main body case 12 are formed in a front-rear manner so as to form the bottom of the main body case 10.

  The bottom body case 42 is fixed to the front body case 11 and the rear body case 12 when sandwiched between the front body case 11 and the rear body case 12. Since the bottom body case 42 is configured to be rotatable with respect to the base 41, the body case 10 integrated with the body case 42 is configured to be rotatable with respect to the base 41.

In this way, when the front body case 11 and the rear body case 12 are fitted together in the front-rear direction and fixed, the bottom body case 42 is sandwiched between the lower ends of the front body case 11 and the rear body case 12, so that By mounting the auto turn unit 40 on the other hand, the main body case 10 and the auto turn unit 40 can be more firmly coupled (connected). As a result, the orientation of the body case can be changed by the rotation of the auto turn unit 40.
That is, the auto turn unit 40 changes the direction by rotating the main body case 10 around the vertical (vertical) rotation axis.

In this way, the bottom body case 42 is fitted in the space formed by the front body case 11 and the rear body case 12 being fitted back and forth.
In other words, the shape of this space restrains the movement of the bottom body case 42 relative to the body case 10 (stops rotation), so that even if the body case 10 that is attached with each part and increases in weight rotates, the body body 10 rotates. The connection between the case 10 and the auto turn unit 40 can be kept strong.
Further, since the heavy fan units 20 are arranged in the vertical direction, the heavy objects can be concentrated at a position close to the center of rotation and the rotation by the auto turn unit 40 can be made smooth.

  Further, in the state where the front main body case 11 and the rear main body case 12 are connected in this way, the fan unit 20 is provided so that the axis of the fan motor faces forward, so that the suction opening of the blade 23 faces forward and the upper side. The suction opening of the fan unit 20 faces the upper opening 111a, and the lower fan unit 20 faces the lower opening 111b.

As described above, the fan guard 13 and the air purifying filter 60 are provided inside the front main body case 11 coupled to the rear main body case 12 as follows.
The fan guard 13 is a lattice-shaped frame that prevents foreign matter from entering the inside of the fan unit 20, and is provided so as to cover the upper opening 111a and the lower opening 111b, respectively.
The air cleaning filter 60 is provided inside the front main body case 11 in that order of a pre-filter 61 on the front side, a HEPA filter 62 behind the pre-filter 61, and a deodorizing filter 63 behind the HEPA filter 62.

Next, the upper unit 50 is provided on the upper part of the main body case 10 configured by the front main body case 11 and the rear main body case 12 being fitted together in the front and rear direction and fixed. The upper unit 50 is arranged across the front body case 11 and the rear body case 12. Then, the frame body 51 of the upper unit 50 is fixed to the front body case 11 and the rear body case 12 by screwing or the like.
In this way, the upper unit 50 is arranged so as to straddle the front main body case 11 and the rear main body case 12, and the frame 51 that is the skeleton of the upper unit 50 is fixed to the front main body case 11 and the rear main body case 12. The connection between the front main body case 11 and the rear main body case 12 can be configured more firmly.
That is, the connection state of the front main body case 11 and the rear main body case 12 can be reinforced without separately providing a reinforcing member for connecting the front main body case 11 and the rear main body case 12. As a result, the front body case 11 and the rear body case 12 can more firmly maintain the state in which the auto turn unit 40 is sandwiched.

Next, the outlet 51a of the upper unit 50 attached to the main body case 10 as described above is located above the upper openings 121a and 121b of the scroll housing and opens upward.
In addition, the human detection device 55 faces the sensor opening 11c of the main body case 11 with the opening for guiding infrared rays directed forward.

  Here, the human detection device 55 is provided inside the concave portion formed by the front concave portion 51c of the frame body 51 vertically extending in the vertical direction, the substrate concave portion 541a, and the operation frame concave portion 543b. This makes it possible to reduce the amount of protrusion of the human detection device 55 to the front and the bottom of the frame 51 when the human detection device 55 is provided on the frame 51.

In this way, since the amount of projection of the person detecting means 55 to the front can be reduced, the size of the air cleaner in the front-rear direction can be made more compact.
Further, since the downward protruding amount of the person detecting means 55 can be reduced, the person detecting means 55 can be configured so as to reduce the amount of blocking the filter 60 located below, and the indoor air to the filter 60. It can be streamed efficiently.

Next, the position where the board unit 30 is provided will be described.
Between the vertical direction of the upper scroll housing 12a and the lower scroll housing 12b, in the space 12c where the opening is directed to the side, which is the space from above the lower scroll housing 12a to the back side of the upper scroll housing 12a, A unit 30 is provided.

  As described above, by providing the substrate unit 30 in the space portion 12c, which is a space formed by the scroll housings 12a and 12b formed by the curved surfaces, the substrate unit 30 can be efficiently arranged, and the air cleaner can be further improved. It can be made compact.

In particular, since the space 12c is located between the upper scroll housing 12a and the lower scroll housing 12b, the distance between the board unit 30 and the fan unit 20 provided in each scroll housing should be equal. You can
Accordingly, the wiring lengths connecting the board unit 30 and each fan unit 20 can be configured to be the same, and it is not necessary to prepare fan units having different wiring lengths, and it is possible to perform It can be installed without distinguishing the upper and lower fan units.

Next, the attachment of the front cover 70, the side cover 80, and the rear cover 90 that form the outer shell will be described with reference to FIGS. 1, 2, 3, and 4.
First, a rear cover 90 is provided on the rear surface of the rear body case 12 by screwing. As a result, a space K surrounded by the rear body case 12 and the rear cover 90 is formed above the upper opening 121b.
The space K communicates the upper opening 121b of the lower scroll housing 12b with the outlet 51a and serves as a flow path for the air flow blown out from the fan unit 20 provided in the lower scroll housing 12b.

Next, attachment of the side cover 80 will be described.
The engaging claw 83 of the side cover 80 is inserted into the slit opening 91a of the rear cover 90 attached to the rear body case 12 from the side, and the convex portion 91b is fitted in the engaging claw opening 83a. In this state, the side surface cover 80 is perpendicular to the rear cover 90 and covers the side surface of the main body case 10. Then, the side cover 80 is screwed to the front body case 11 by screwing it from the front through the screw opening 84.

As described above, in the side cover 80, on the rear side, the engaging claw 83 is inserted into the slit opening 91a of the rear cover 90 so as to enter the inside of the rear cover 90, and the convex portion 91b is fitted into the engaging claw opening 83a. By doing so, it engages without using a screw or the like and is fixed to the front side using a screw.
As a result, the amount of screws used when attaching the side cover 80 to the rear cover 90 can be reduced.

Next, attachment of the front cover 70 will be described.
The front cover 70 is detachably attached to the front body case 11 so as to cover the air purification filter 60 when the air purification filter 60 is attached to the front body case 11.
When the front cover 70 is attached to the front body case 11, the infrared sensor 55b is located in the opening 72, and the screw attached to the screw opening 84 of the side cover 80 is hidden from the outside by the front cover 70.
The front cover 70 is detachable from the front main body case 11. By removing the front cover 70, the air cleaning filter 60 can be removed and maintenance such as cleaning can be performed.

Further, since the side surface cover 80 is formed with the side surface recessed portion 82, a gap R is formed at a position where the front surface cover 70 and the side surface cover 80 meet, and the gap R takes in room air into the air purifier. It becomes the air intake port 82a.
In this way, the air intake port 82a faces the left-right direction of the air purifier and can take in air from the side of the air purifier. That is, the indoor air can be taken in from a wider range by rotating the air purifier.

Further, the air cleaner thus configured is provided with a dust sensor (not shown) that detects the amount of dust contained in the room air and an odor sensor (not shown) that detects the odor of the room air. Has been.
Then, these sensors are electrically connected to the control means, and the signal transmitted by the detection by the sensor is input to the control means, and the air cleaning operation can be performed based on this signal. ing.

The respective parts are assembled as described above, and the air purifier operates the respective parts as described below to take in indoor air and clean the air.
First, when the power cord 41c is connected to a power source, the rotational position detecting means 45 detects the positional relationship between the main body case 10 (hereinafter, simply referred to as the main body case 10) in which each part is assembled and the auto turn unit 40.

When the main body case 10 does not face the same direction as the auto turn unit 40, that is, when the main body case 10 does not face the front, the rotational position detecting means 45 detects that the main body case 10 faces the front. Until then, the rotary drive unit 44 is driven to rotate the main body case 10.
In the case of the present embodiment, when the main body case 10 faces the front, the three photo interrupters that are the rotational position detecting means 45 are located in the three slits formed in the partition 413a, and all the photo interrupters are located. The interrupter is in a state where the light receiving unit detects the light from the light emitting unit.

  In this way, after the operation of the main body case 10 facing the front, which is the initial state, is completed, the sensor drive motor 55c of the human detection device 55 performs the alignment operation described below, and the infrared sensor 55b faces the front. Stop in the state.

Next, the control means starts the air cleaning operation by operating the operation start switch provided on the operation display unit 54.
First, the louver drive motor 53 drives the louver 52 to move upward, and the outlet 51a is released. At this time, the louver 52 stops at an angle at which the clean air blows upward from the horizontal direction by about 45 degrees. This blowing angle is the optimum angle for cleaning the indoor air.

Then, the fan unit 20 is driven. As a result, the air in the room is sucked into the air purifier through the air intake port 82a formed between the front cover 70 and the side cover 80.
Then, the room air taken into the air purifier is cleaned through the pre-filter 61, the HEPA filter 62, and the deodorizing filter 63, and then sucked into the blades 23 of the fan unit 20 from the front to rotate the blades 23. The air is discharged in the upward direction and is blown upward or obliquely upward from the air outlet 51a to the outside of the air purifier M.
In this way, since the outlet 51a opens upward, the cleaned air is blown upward or obliquely upward.

Here, by operating a mode changeover switch provided on the operation display unit 54, a preset operation mode can be selected.
For example, when the standard automatic operation is selected, the operation of operating the fan unit 20, the auto turn unit 40, and the louver 52 based on the detection results of the human detection device 55, the dust sensor (not shown), and the odor sensor (not shown). The mode is executed by the control means.

Next, with reference to FIGS. 12 and 13, a person detecting operation of the person detecting device 55 will be described.
When the standard operation is started, the person detecting device 55 starts the person detecting operation. Then, the human detection device 55 drives the sensor drive motor 55c to rotate the case 55a in which the infrared sensor 55b is provided, and changes the direction of the infrared sensor 55b.

The sensor drive motor 55c is set to drive an angle according to the number of input pulses, and the amount of rotation angle of the case 55a is determined accordingly.
In the case of the present embodiment, the rotation angle of the sensor drive motor 55c, that is, the rotation angle of the case 55a is changed from the state where one rotation regulating rib 556a abuts the frame 51 to the other rotation regulating rib 556a. It is set to about 156 degrees until it hits the body 51.

Referring to FIG. 13, in STEP 1, the control unit causes the rotation restricting rib 556a on the left side (not shown) of the case 55a to rotate counterclockwise toward the abutting position 0, which is the position where the rotation restricting rib 556a abuts on the frame 51. Then, the left abutment pulse P1 is input to the sensor drive motor 55c.
The input pulse number of the left abutting pulse P1 is abutting from the right abutting position 4 where the sensor drive motor 55c rotates counterclockwise and the human detection device 55 abuts the right rotation restriction rib 556a on the frame 51. It is the number of pulses that can rotate at a rotation angle of about 156 degrees or more up to the position 0. At the stage where this STEP1 is finished, the direction is toward the leftmost side.

  This STEP1 is the first step for the control means to reset the rotational position of the sensor drive motor 55c so that the infrared sensor 55b can perform an accurate alignment operation in the direction it faces. As a result, even if the user touches the human detection device 55 or contacts with some object and rotates before STEP 1, the positioning operation can be accurately performed. become.

Next, in STEP2, the control means inputs the first correction pulse P2 so that the sensor drive motor 55c is reversed with respect to the rotation in STEP1.
The number of input pulses of the first correction pulse P2 is such a number as to correct backlash of gears forming the sensor drive motor 55c and play (play) in the connection between the rotating shaft 551c and the case 55a. Does not rotate and remains at the abutting position 0.

Here, a state in which the sensor drive motor 55c is driven to rotate rightward (counter-rotation of STEP1) from the state where STEP1 ends will be described.
First, in the state where STEP1 is finished, the left rotation restricting rib 556a of the case 55a is in contact with the frame body 51, and when the sensor drive motor 55c rotates to the right, the backlash of the gears forming the sensor drive motor 55c occurs. The sensor drive motor 55c is rotationally driven by the amount of looseness of the connection between the rotary shaft 551c and the case 55a.

When this backlash disappears, the rotation of the sensor drive motor 55c is transmitted to the case 55a, and the case 55a starts rotating to the right.
In other words, even if the sensor drive motor 55c operates, the case 55a rotates the sensor drive motor 55c until the backlash of the gears forming the sensor drive motor 55c and the looseness of the connection between the rotating shaft 551c and the case 55a disappear. Does not transmit, so it does not rotate.

  Therefore, when it is desired to rotate (reverse) the case 55a in the right direction from the state of STEP 1, even if the pulses for the rotation of the case 55a are input to the sensor drive motor 55c, the backlash of the gears and the backlash of each part are actually generated. Therefore, the case 55a starts moving later than the sensor drive motor 55c.

That is, an error occurs between the angle at which the sensor drive motor 55c rotates and the angle at which the case 55a rotates due to the input pulse, and the case 55a cannot be rotated at an accurate angle only with a pulse that rotates a predetermined angle.
In order to reduce such an error, in STEP 2, the first correction pulse P2 is input to drive the sensor drive motor 55c, and the error in the rotation angle due to backlash or backlash of each part can be reduced.

Next, in STEP3, the control means inputs an initial position setting pulse P3 for rotating the sensor drive motor 55c clockwise by 3 degrees to drive the sensor drive motor 55c from the abutting position 0 to the left stop position 1. As a result, an interval of 3 degrees is formed from the abutting position 0 to the left stop position 1.
This interval is for preventing the case 55a from hitting the frame 51 at the left stop position 1 that changes the rotation direction in the process of the human detection device 55 rotating in the left-right direction and performing the human detection operation. ..
As described above, STEP1 to STEP3 are the initial position setting operation before the human detection device 55 performs the human detection operation. By setting the rotation initial position of the human detection device 55 in this manner, the air purifier can be correctly oriented based on the detection result of the human detection device 55.

Next, when the human detection is started, in STEP 4, the control means inputs a right rotation pulse P4 for rotating the sensor drive motor 55c clockwise by 150 degrees to drive from the left stop position 1 to the right stop position 3. ..
Here, the infrared sensor 55b detects infrared rays from an object in the range of the detection visual field and inputs the signal to the control means. Then, the control means determines the position where the person exists from the input signal from the infrared sensor 55b and the pulse of the sensor drive motor 55c at the position where the signal is input.

Next, when the human detection means 55 rotates to the right stop position 3, in STEP 5, the control means inputs the second correction pulse P5 to the sensor drive motor 55c in order to reverse the sensor drive motor 55c counterclockwise.
The number of input pulses of the second correction pulse P4 is such a number as to correct backlash of gears forming the sensor drive motor 55c and play (play) in the connection between the rotary shaft 551c and the case 55a.

Similar to the first correction pulse P2, the second correction pulse P5 is for reducing an error between the angle at which the sensor drive motor 55c rotates by the input pulse and the angle at which the case 55a rotates. , The absolute value of the second correction pulse P5 and the absolute value of the first correction pulse P2 are set so that P2> P5.
At the abutting position 0, the case 55a has abutted against the main body case 10 and has been pressed in the rotational direction, so there is a large amount of backlash when the sensor drive motor 55c is reversed.

On the other hand, the right stop position 3 has a clearance of 3 degrees between it and the right abutting position 4, and the case 55a never hits the main body case 10. Therefore, there is rattling when the sensor drive motor 55c is reversed. Is small.
Therefore, by setting the magnitude of the second correction pulse P5 smaller than the magnitude of the first correction pulse P2, the above error can be corrected appropriately.

Next, in STEP 6, the control means inputs the left rotation pulse P6 for rotating the sensor drive motor 55c counterclockwise by 150 degrees to drive from the right stop position 3 to the left stop position 1.
Here, the infrared sensor 55b detects infrared rays from an object in the range of the detection visual field and inputs the signal to the control means. Then, the control means determines the position where the person exists from the input signal from the infrared sensor 55b and the pulse of the sensor drive motor 55c at the position where the signal is input.

Next, when the human detection means 55 rotates to the right stop position 1, in STEP 7, the control means inputs the third correction pulse P7 to the sensor drive motor 55c in order to reverse the sensor drive motor 55c clockwise.
The number of input pulses of the third correction pulse P7 is such a number as to correct the backlash of the gears forming the sensor drive motor 55c and the play (play) in the connection between the rotary shaft 551c and the case 55a.

Similar to the first correction pulse P2, the third correction pulse P7 is for reducing the error between the rotation angle of the sensor drive motor 55c and the rotation angle of the case 55a by the input pulse. , The magnitude comparison between the absolute value of the third correction pulse P7 and the absolute value of the first correction pulse P2 is set so that P2> P7.
At the abutting position 0, the case 55a has abutted against the main body case 10 and has been pressed in the rotational direction, so there is a large amount of backlash when the sensor drive motor 55c is reversed.

On the other hand, the left stop position 1 has a clearance of 3 degrees between the left stop position 4 and the left abutting position 4, and the case 55a never hits the main body case 10. Therefore, there is a backlash when the sensor drive motor 55c is reversed. Is small.
Therefore, by setting the magnitude of the third correction pulse P7 smaller than the magnitude of the first correction pulse P2, the above error can be appropriately corrected.

As described above, the control unit performs the initial position setting operation before the human detection device 55 performs the human detection operation in STEP1 to STEP3, and repeats STEP4 to STEP7, thereby responding to the direction in which the human detection device 55 faces. The presence or absence of a person can be detected and the position where the person exists can be grasped.
In particular, in addition to the scanning operation of the sensor drive motor 55c of the human detection device 55, the orientation of the main body case 10 is changed by rotating the auto turn unit 40, thereby enabling a wider range of human detection.
Then, the control means drives the rotation drive unit 44 of the auto turn unit 40 and the rotation position detection means 45 based on the detection result of the person detection device 55, and directs the front of the air purifier in the direction in which a person exists.

  Further, the louver drive motor 53 is driven to turn the louver 52 upward. Since the air intake port 82a is opened in the left-right direction of the air purifier M, when the louver 52 blows out air into the upper space in the direction of the person, an air flow is formed around the person and dust is generated. It can be efficiently carried near the air purifier. Furthermore, since the air is blown toward the space above the person, the air blown directly does not hit the person.

Further, in such a state, based on the detection results from the dust sensor (not shown) and the odor sensor (not shown), when the indoor air contains much dust or has a strong odor, the motor 21 of the fan unit 20 Increase the rotation speed of to clean the room air strongly until the amount of dust and the odor intensity decrease.
Further, in the above state, if the dust sensor and the odor sensor do not detect dust, odor, and dirt in the room for a certain period of time, or if the detected value is less than or equal to a predetermined value, the person detection device 55 detects the person again. To resume.

M Air purifier, 10 main body case, 11 front main body case, 11a upper partition, 111a upper opening, 11b lower partition, 111b lower opening, 11c sensor opening, 12 rear main body case, 12a upper scroll housing, 121a upper opening, 122a upper Recessed portion, 12b lower scroll housing, 121b upper opening, 122b lower recessed portion, 12c space portion, 12x front and rear wall surfaces, 13 fan guard, 14 guard net, 20 fan unit, 21 motor, 21a rotating shaft, 22 motor cover, 23 blades , 30 board unit, 31 printed wiring board, 32 first board case, 33 second board case, 40 auto turn unit, 41 base stand, 41a base stand recess, 413a partition, 414a slit, 415a rack gear, 41b center projection Part, 41c power cord, 42 bottom body case, 42a bearing, 421a side opening, 42b flange, 42c wheel housing, 42d photointerrupter mounting recess, 43 auto turn shaft, 43a through hole, 431a groove part, 44 rotary drive unit, 44a stepping Motor, 441a rotating shaft, 44b pinion gear, 44c bearing holding plate, 44d motor case, 45 rotational position detecting means, 46 sliding plate, 46a sliding plate opening, 46b flange recess, 47 sliding plate retainer, 48 base stand side Wheel, 49 Main body side wheel, 50 Upper unit, 51 Frame, 51a Outlet, 51b Step, 51c Front recess, 52 Louver, 53 Louver drive motor, 54 Operation display unit, 54a Operation board, 541a Board recess, 54b Operation Frame, 541b Optical path opening, 542b Link, 543b Operation frame recess, 54c Sheet, 55 person detection device, 55a case, 551a housing, 552a lid, 553a lower opening, 554a Infrared intake opening, 555a Shaft connection part, 556a Rotation regulating rib , 55b infrared sensor, 551b sensor holding frame, 55c sensor drive motor, 551c rotating shaft, 60 air cleaning filter, 61 prefilter, 62 HEPA filter, 63 deodorizing filter, 70 front cover, 71 concave part, 72 sensor opening, 80 side cover, 81 hand recessed part, 82 side concave part, 82a air intake port, 83 engaging claw, 83a engaging claw opening, 84 screw opening, 90 rear cover, 91 engaging receiving part, 91a slit opening, 91b convex portion

Claims (3)

A body case, provided in the main body case, and the human detection device for detecting the presence or absence of a person, and the auto-turn unit for changing the orientation by rotating the body case about an axis of rotation in the vertical direction, of the person detecting device and control means for controlling the rotation of the auto-turn unit based on the detection result, an air cleaner to have a,
The person detection device includes a sensor and a motor that changes the direction of the sensor, and drives the motor to change the direction of the sensor to detect the presence or absence of a person corresponding to the direction in which the sensor faces. ,
Based on the detection result of the human detection device, the control means controls the auto turn unit to rotate so that the front of the main body case faces the direction in which a person exists,
The main body case is provided with a plurality of fan units that generate a suction force for taking in indoor air from the outside, and an air cleaning filter for cleaning the indoor air taken in from the outside.
The plurality of fan units are arranged such that the axial direction of the rotating shaft and the suction port face forward and suck air from the front, and are arranged in a vertical positional relationship in the vertical direction when viewed from the front. An air purifier characterized by that.   A power supply board for supplying electric power to these fan units or a control board for controlling these fan units is arranged between the upper fan unit and the lower fan unit. Item 1. The air purifier according to Item 1. An upper unit is provided on the upper part of the main body case,
The upper unit is provided with an outlet that blows out clean air from the inside of the main body case,
The air purifier according to claim 1 or 2, wherein the outlet is opened upward.

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