JP2016097038A - Air cleaning machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cleaning machine which can be compactly structured without decreasing air cleaning function.SOLUTION: An air cleaning machine includes: a body case; an operation display part which is set to the upper part of the body case; and a person detecting device which detects a position where a person exists. The body case is provided with a fan which takes air inside, and an air cleaning filter which cleans the taken interior air. A recessed part is formed on the front surface of the operation display part, and the person detection device is located inside the recessed part.SELECTED DRAWING: Figure 1

Description

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

  2. Description of the Related Art Conventionally, there is an air cleaner provided with a directional sensor that scans a room to detect a person and a rotating unit that directs a suction port toward the person detected by the sensor. This air cleaner is configured by providing a control board on the upper part of the front case where the suction port is formed, and further providing an upper case having an infrared light receiving part on the upper part (see, for example, Patent Document 1). .

JP-A-2-245212

  However, in the conventional configuration, since the control board is provided on the upper part of the front case where the suction port is formed and the upper case having the infrared light receiving part is provided on the upper part, the entire air cleaner is provided. There is a problem that the height increases and the size increases.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an air cleaner that can be configured compactly without deteriorating the air cleaning function.

  In order to solve the above problems, in the air purifier, the main body case, the operation display unit provided on the upper portion of the main body case, and a human detection device for detecting a position where a person exists, the main body case is A fan for taking in indoor air and an air purifying filter for purifying the taken in indoor air are provided. A concave portion is formed on the front side of the operation display unit, and a human detection device is located inside the concave portion. It is good to have a configuration.

  ADVANTAGE OF THE INVENTION According to this invention, a human detection apparatus can be provided without reducing an air purifying function, and the air cleaner which can be comprised more compactly can be provided.

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

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and overlapping descriptions are simplified or omitted as appropriate.

Embodiment.
1 to 4, the air purifier M of the present embodiment includes a main body case 10, a fan unit 20, a board unit 30, an auto turn unit 40 that is a rotating mechanism that changes the orientation of the main body case 10, and an upper unit. 50, an air purifying filter 60, a front cover 70 that covers the front surface, a side cover 80 that covers the left and right side surfaces, a rear cover 90 that covers the rear surface, and components associated therewith.

The main body case 10 is configured by a front main body case 11 constituting the front side and a rear main body case 12 constituting the rear side being joined together in the front-rear direction.
The front 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 serve as wall surfaces that divide the interior into a front side and a rear side.

The upper partition 11a partitions the upper side inside the front main body case 11, and has a circular upper opening 111a. The lower partition 11b partitions the lower side inside the front main body case 11, and a circular lower opening 111b is formed. The upper opening 111a and the lower opening 111b are openings that penetrate the front-rear direction. Moreover, the upper partition 11a is located ahead of the lower partition 11b.
Further, a sensor opening 11c is formed on the front surface of the front main body case 11 so as to face a human detection device 55 described later. The sensor opening 11c is located on the front upper side of the front body case 11 and at the center of the left-right width.

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

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

Further, an upper recess 122a, which is a circular recess opening toward the front, is formed inside the upper scroll housing 12a. Similarly, a lower recess 122b, which is a circular recess that opens forward, is formed inside the lower scroll housing 12b.
Here, since the space portion 12c is located between the upper and lower scroll housings 12a and 12b, the distance between the space portion 12c and the upper recessed portion 122a is equal to the distance between the space portion 12c and the lower recessed portion 122b. Or there is no significant 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 the rotating shaft 21 a of the motor 21. The fan unit 20 is a centrifugal multiblade fan such as a sirocco fan that takes in air from the direction of the rotation axis (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 formed of a resin that houses the board 31 therein, and a board 31. It has a second substrate case 33 made of metal for housing the first substrate case 32 held inside.
The substrate unit 30 constitutes a control means for controlling the operation of various electric components such as a sensor and a motor constituting the air purifier M based on inputs from the operation unit and various sensors.
The printed wiring board 31 constituting the board unit 30 may be a power supply board, or a microcomputer serving as a control means may be provided on the operation board 54a constituting the operation display unit 54 described later.

Next, the auto turn unit 40 will be described with reference to FIGS.
The auto turn unit 40 includes a base base 41, a bottom main body case 42 connected to the main body case 10 as a bottom, an auto turn shaft 43 on which the bottom main body case 42 is rotatably supported, and a bottom main body case 42. A rotation drive unit 44 that rotates with respect to the base base 41, a rotational position detecting means 45 that detects a rotational position of the bottom body case 42, a sliding plate 46, a sliding plate presser 47, and a base base side wheel 48; The main body side wheel 49 is provided.

  The base pedestal 41 is a part that serves as a bottom part that supports the entire air purifier M. The outer shape is a rectangular shape, and a base pedestal recessed portion 41a that is a recessed portion that opens circularly is formed inside. A central convex portion 41b, which is a projecting portion whose central portion is open, is formed at the center of the base base concave portion 41a, and an auto turn shaft 43 is provided on the central convex portion 41b.

  The auto turn shaft 43 has a through hole 43a penetrating vertically at the center, 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 base 41 by fitting a through hole 43 a that opens at the center of the auto turn shaft 43 into the center convex portion 41 b. In addition, the opening of the through-hole 43a and the center convex part 41b is connecting.

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

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

Next, the bottom main body case 42 is formed with an opening serving as a bearing 42a at the center, and the outer shape is a cup shape that can be inserted into the base table recess 41a. A flange 42b is formed. 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 detection means 45 includes three photo interrupters that are sensors that have a light emitting portion and a light receiving portion that face each other, and that can detect light from the light emitting portion with the light receiving portion. The control means determines the rotational position based on a combination of signals when each of the three photo interrupters detects light.

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

The distance from the center of rotation of the bottom main body case 42 (the 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 divided from the center of the auto turn shaft 43 provided on the base 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 adjacent slits formed in the partition 413a.
Further, the gap between the light interrupting portion and the light receiving portion of the photo interrupter is configured to open downward.

  Next, the rotation drive unit 44 includes a stepping motor 44a as a drive source, a pinion gear 44b attached to the rotation shaft 441a of the stepping motor 44a, a bearing holding plate 44c that receives the rotation shaft 441a of the stepping motor 44a, and a stepping motor. It has a motor case 44d that covers and holds 44a from below.

  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. Screwed. By attaching the rotation drive unit 44 in this way, the pinion gear 44b is positioned below the bottom main body case 42.

Next, the sliding plate 46 has a ring shape in which the inside of the circular plate has a sliding plate opening 46a, and a flange recess 46b into which the flange 42b enters is formed on the upper surface.
The sliding plate 46 thus formed is fixed to the bottom main body case 42 with screws or the like while the bottom main body case 42 is passed through the sliding plate opening 46a and the flange 42b is inserted into the flange concave portion 46b.

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

Each part of the above auto turn unit 40 is assembled as follows.
The bottom main body case 42 provided with each part as described above 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 44 b of the rotation drive unit 44 provided in the bottom main body case 42 is in a state of being engaged with the rack gear 415 a provided in the base base 41. In the rotational position detecting means 45, a partition 413a is located in the gap between the light emitting portion and the light receiving portion facing each other.

A stopper 42e is attached so that the bearing 42a is not detached from the auto turn shaft 43. The stopper 42e enters and engages with a groove 431a formed on the side surface of the auto turn shaft 43 from the side surface opening 421a of the bearing 42a, thereby preventing the bottom main body case 42 from dropping upward.
Further, by attaching the sliding plate restraint 47 that restrains the peripheral edge of the sliding plate 46 from above to the base base 41, it is possible to suppress the wobbling when the bottom main body case 42 side rotates.

Thus, in a state where the bottom main body case 42 is attached to the base base 41, the main body side wheel 49 is in contact with the base base 41 and supports the bottom main body case 42. Further, the base table side wheel 416 a is in contact with the sliding plate 46 and supports the bottom main body case 42.
These wheels roll when the bottom main body case 42 rotates with respect to the base base 41, thereby reducing the resistance between both members and smoothly rotating the bottom main body case 42 side.

Further, the distance from the center of rotation of the bottom main body case 42 (the 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 base 41. Since it is equal to the distance to 413a, the bottom main body case 42 can be rotated with the partition 413a positioned between the light emitting part and the light receiving part.
Accordingly, when the stepping motor 44a is operated while the base table 41 is placed on the floor surface, the pinion gear 44b meshing with the rack gear 415a rotates, and the bottom main body case 42 side rotates with respect to the base table 41.

Thus, when the bottom main body case 42 rotates and changes its orientation, the photo interrupter as the rotational position detecting means 45 rotates together with the bottom main body case 42 with the partition 413a sandwiched between the light emitting portion and the light receiving portion.
Then, the positions of the rotation position detecting means 45 and the partition 413a are changed by the rotation, so that the slit 414a is positioned between the light emitting part and the light receiving part according to the rotation position, and the light receiving part detects the light from the light emitting part.
The control means determines the rotational position (orientation) 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.
The upper unit 50 includes a frame 51 serving as a skeleton of the upper unit, a louver 52 that changes the direction of the clean air blown out, a louver drive motor 53 that changes the direction of the louver 52, and various setting conditions for the air cleaner M and an air cleaner. An operation display unit 54 for displaying the state of M and a human detection device 55 having a sensor for detecting the presence of a person are included.

  The frame 51 has a rectangular shape when viewed from above, and a clean air blowing port 51a, which is a rectangular opening facing upward, is formed on the rear side. The front side of the blowing port 51a is closer to the periphery of the blowing port 51a. The lower step portion 51b is formed, and a front concave portion 51c that is recessed rearward is formed on the front surface. The front concave portion 51c is provided with a human detection device 55 described later.

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

  Next, the operation display unit 54 includes an operation board 54a on which electronic components such as LEDs that are the switches 541s and the light emitting part 541h are mounted, an optical path opening 541b that guides the LED light, and a link 542b that presses the switch on the operation board 54a. It comprises an operation frame 54b provided and a sheet 54c on which convex portions of operation switches on which functions and explanations of LED lamps are printed.

In each of these parts, an operation board 54a is provided on the stepped part 51b, an operation frame 54b is provided on the operation board 54a, and a sheet 54c is provided on the upper surface of the operation frame 54b.
Thus, in the state in which each part is provided, the convex part of the operation switch pressed by the user formed on the sheet 54c has a vertical positional relationship with the link of the operation frame 54b, and the function and explanation of the LED lamp are printed. The portion has a vertical positional relationship with the optical path of the corresponding LED.

By configuring in this way, the link provided on the operation frame 54b is pushed down by pushing the convex portion indicating the operation switch, and the switch mounted on the operation board 54a is pushed.
In addition, the LED mounted on the operation board 54a, the optical path of the operation frame 54b, and the function / explanation of the lamp of the sheet 54c coincide vertically, so that the LED corresponding to the function / explanation printed on the sheet 54c is turned on. -The state of the air cleaner M is indicated by turning off the light.

Here, the operation substrate 54a has a central portion of the left and right width partially cut from the front side by cutting a predetermined region into a semicircular shape, in other words, by forming the outer shape into a recessed shape, thereby forming the substrate recess 541a. Is formed. The substrate recess 541a is positioned so as to overlap the front recess 51c in a state where the operation substrate 54a is provided on the stepped portion 51b.
Here, the notch for forming the substrate recess 541a is configured not to overlap with the front and rear switches and LEDs provided on the operation substrate 54a.

Next, the operation frame concave portion 543b is formed in the operation frame 54b by forming the center portion of the left and right widths by cutting a predetermined region into a semicircular shape from the front side, in other words, by making the outer shape concave. Is done. The operation frame recess 543b is located at a position overlapping the front recess 51c in a state where the operation frame 54b is provided on the stepped portion 51b.
Here, the notch forming the operation frame recess 543b is configured not to overlap in the front-rear direction with an opening serving as an optical path of the LED formed in the operation frame 54b or an opening where a switch link is located.

Next, the human detection device 55 will be described with reference to FIGS.
The human detection device 55 includes a case 55a, an infrared sensor 55b housed in 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 casing 551a has a cylindrical shape, a lower opening 553a that opens downward, an infrared capturing opening 554a that opens forward, a shaft connection portion 555a to which the rotation shaft of the sensor drive motor 55c is connected, and a case 55a. A rotation restricting rib 556a for restricting the rotation angle is formed.

The rotation restricting ribs 556a are formed so as to protrude in the left-right direction from the shaft connecting portion 555a. When the case 55a is rotated by the sensor drive motor 55c, the rotation restricting rib 556a hits the frame 51 which is a part to which the human detection device 55 is attached. Thus, the rotation angle of the case 55a is regulated.
The position where the left rotation restricting rib 556a abuts against the main body case 10 corresponds to a left abutting position 0 described later. The position where the right rotation restricting rib 556a abuts against the frame 4 corresponds to the right abutment 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 configured by a member that transmits infrared light. In this state, the infrared sensor 55b can detect infrared light that enters the infrared capturing opening 554a of the case 55a. Be placed.

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

The human detection device 55 configured as described above changes the direction of the case 55a and changes the direction of the infrared sensor 55b when the drive motor 55c is driven. The direction of the infrared sensor 55b is configured to be rotationally driven with an angular width of about 150 degrees in the horizontal direction.
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 butting position 0 to the left stop position 1, and the right stopping position 4 from the right stop. The angle up to position 3 is set at about 3 degrees. Thereby, the infrared sensor 55b is configured not to be able to rotate more than about 156 degrees from the left butting position 0 to the right butting position 4.

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

The human detection device 55 configured as described above repeatedly drives a range of about 150 degrees in the horizontal direction, scans the room temperature, and detects the presence of a person and the person as seen from the air cleaner based on the temperature detection result. Is determined by the control means.
The drive motor 55c uses a stepping motor capable of accurately adjusting the drive angle, and can accurately determine the direction in which the person is present. The stepping motor rotates an angle corresponding to the number of input pulses.

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

The upper unit 50 having the above-described parts is assembled as follows.
An operation substrate 54 a is provided on the upper surface of the step 51 b on the front side of the frame 51. Next, an operation frame 54b is provided so as to cover the operation board 54a. And the sheet | seat 54c in which the description etc. of the operation display part 54 are described on the upper surface of the operation frame 54b is provided.
As described above, the upper surface of the operation display unit 54 provided on the frame body 51 has substantially the same height as the air outlet 51a. When the louver 52 is closed and covers the air outlet 51a, the upper surface and the height of the louver 52 are the same. It's aligned.

Thus, in a state where the operation substrate 54a and the operation frame 54b are provided with respect to the frame 51, the front surface recess 51c, the substrate recess 541a, and the operation frame recess 543b of the frame 51 have a positional relationship that is continuous in the vertical direction. The human detection device 55 is provided inside these recesses.
In the case of the present embodiment, the case 55a is positioned inside the front recess 51c, and the sensor drive motor 55c is positioned 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.

The infrared sensor 55b of the human detection device 55 is attached to the inside of the case 55a with 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 height of about 80 cm from the floor, it is directed upward by θ = 14 ° from the horizontal. Has been.
By arranging in this way, the infrared sensor 55b detects the head of an adult (height 170 cm) standing from a child (sitting height 65 cm) sitting at a location approximately 1.0 [m] away from the air purifier M. Can do.

In this way, the concave portions (51c, 541a, 541b) are arranged in the upper unit 50 so as to be connected in the vertical direction, and the human detection device 55 is provided in the space formed by these concave portions, so that the human detection device 55 The amount of the unit 50 protruding downward can be further reduced.
In other words, the air purification filter 60 and the human detection device 55 described later can be overlapped without overlapping or less, and the air purification filter 60 attached to the lower side of the human detection device 55. It is possible to configure a larger area.
In addition to this, the amount by which the human detection device 55 protrudes in the forward direction of the upper unit 50 can be reduced.

Next, the air purification 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 prefilter 61 is for removing relatively large dust and the like from the air. The HEPA filter 62 removes dust (fine particles), bacteria, viruses, and the like that could not be removed from the air by the prefilter 61. The deodorizing filter 63 removes odorous components and volatile organic compounds (VOC) from the air flow that has passed through the prefilter 61 and the HEPA filter 62 by adsorption and decomposition.

Next, with reference to FIG. 4, covers that form the outline of the air cleaner M will be described.
The outline of the air purifier M is composed of 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 long concave portion 71 is formed on the front and right sides. A sensor opening 72 facing the human detection device 55 is opened at the left and right center of the recess 71.

The concave portion 71 is a concave portion provided to secure a detection visual field 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 positioned in the sensor opening 72. is there. When the human detection device 55 is positioned in the sensor opening 72, the front surface of the human detection device 55 is substantially flush with the front surface of the front cover 70.
And the recessed part 71 has comprised the fan shape larger than about 150 degree | times centering on the sensor opening 72 according to the rotation angle of the infrared sensor 55b. Thereby, 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 surface in a state where 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, with a side-facing recess 81 on the side, a side recess 82 having a width in the vertical direction on the front side, and an inner side on the rear side. An engaging claw 83 is formed. The engaging claw 83 has a plate shape, and an engaging claw opening 83a is opened 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 are engaged are formed on the left and right sides. The engagement receiving portion 91 includes a slit-like opening (slit opening 91a) facing sideways, and a convex portion 91b formed in the vicinity of the slit opening 91a on the surface facing the front of the rear cover 90.
The front cover 70, the side cover 80, and the rear cover 90 are all configured at the same height.

The above units and parts are assembled as follows to form the air purifier M.
Referring to FIGS. 2 to 4, the fan unit 20 is provided in the upper concave portion 122 a and the lower concave portion 122 b of the rear body case 12 by attaching the motor 21.
The motor 21 is attached to the upper concave portion 122a and the lower concave portion 122b with the axial direction of the rotating shaft facing forward.
In other words, the fan unit 20 is provided so that the suction port of the blade 23 faces forward, sucks air from the front, and blows out airflow toward the scroll housings 12a and 12b positioned in the radial direction of the blade 23 and surrounding. It is done.

Next, the front main body case 11 is connected to the main body case 12 so as to cover the front surface. That is, the main body case 10 is configured by the front main body case 11 and the rear main body case 12 being joined in the front-rear direction and fixed by screws or the like.
Here, when the front main body case 11 and the rear main body case 12 are joined together and fixed, the bottom main body case 42 is sandwiched between the lower ends of the front main body case 11 and the rear main body case 12, thereby The auto turn unit 40 can be attached.
That is, the bottom main body case 42 is provided in the lower space of the main body case 10 where the front main body case 11 and the rear main body case 12 are formed in the front-rear direction to form the bottom of the main body case 10.

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

  In this way, when the front main body case 11 and the rear main body case 12 are joined together and fixed, the bottom main body case 42 is sandwiched between the lower ends of the front main body case 11 and the rear main body case 12, thereby On the other hand, by attaching the auto turn unit 40, the main body case 10 and the auto turn unit 40 can be firmly coupled.

In particular, the bottom main body case 42 is fitted in a space formed by the front main body case 11 and the rear main body case 12 being combined in the front-rear direction.
That is, since the movement of the bottom main body case 42 with respect to the main body case 10 is suppressed by this shape of the space (it is a detent), the main body case 10 can be rotated even if the main body case 10 that is attached and increases in weight is rotated. The coupling between the case 10 and the auto turn unit 40 can be kept strong.

  Further, in the state where the front main body case 11 and the rear main body case 12 are connected as described above, the fan unit 20 is provided so that the shaft of the fan motor faces forward. 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 in the front main body case 11 coupled to the rear main body case 12 as follows.
The fan guard 13 is a lattice-like frame that prevents foreign matter from entering the fan unit 20, and is provided so as to cover the upper opening 111a and the lower opening 111b.
The air purification filter 60 is provided inside the front main body case 11 in the order of a prefilter 61 on the front side, a HEPA filter 62 behind the prefilter 61, and a deodorizing filter 63 behind the HEPA filter 62.

Next, an upper unit 50 is provided on the upper part of the main body case 10 constituted by the front main body case 11 and the rear main body case 12 being fixed together in the front-rear direction. The upper unit 50 is disposed across the front main body case 11 and the rear main body case 12. The frame 51 of the upper unit 50 is fixed to the front main body case 11 and the rear main body case 12 by screws or the like.
As described above, the upper unit 50 is disposed across 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 main body case 11 and the rear main body case 12 can be configured more firmly.

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

  Here, the human detection device 55 is provided inside a recess formed by the front surface recess 51c, the substrate recess 541a, and the operation frame recess 543b of the frame 51 that are vertically connected in the vertical direction. Thereby, in the state in which the human detection device 55 is provided on the frame 51, the amount of protrusion of the human detection device 55 forward and downward of the frame 51 can be reduced.

Thus, since the amount of forward projection of the human detection means 55 can be reduced, the size of the air cleaner in the front-rear direction can be made more compact.
Further, since the amount of the person detecting means 55 protruding downward can be reduced, the amount of the person detecting means 55 blocking the filter 60 positioned below can be reduced, and the room air is sent to the filter 60. It can flow efficiently.

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

  Thus, by providing the substrate unit 30 in the space portion 12c that is a space formed by the difference in the shape of the scroll housings 12a and 12b formed by curved surfaces and the shape of the rectangular rear main body case 12, the substrate unit is efficiently provided. 30 can be arranged, and the air cleaner can be made more compact.

In particular, since the space portion 12c is located between the upper scroll housing 12a and the lower scroll housing 12b, the distance between the board units 30 is set equal to the fan units 20 provided in the respective scroll housings. Can do.
Thereby, the length of the wiring connecting the board unit 30 and each fan unit 20 can be configured in the same way, and it is not necessary to prepare a motor having a different wiring length. It is attached without distinguishing the motor.

Next, with reference to FIGS. 3 and 4, attachment of the front cover 70, the side cover 80, and the rear cover 90 that constitute the outer shell will be described.
First, a rear cover 90 is provided on the back surface of the rear main body case 12 by screws. Thus, a space K surrounded by the rear main body case 12 and the rear cover 90 is formed above the upper opening 121b.
This space K communicates the upper opening 121b of the lower scroll housing 12b and the outlet 51a, and serves as a flow path for airflow blown 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 enters from the side into the slit opening 91a of the rear cover 90 attached to the rear main body case 12, and the convex portion 91b fits into the engaging claw opening 83a. In this state, the side 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 from the front through the screw opening 64.

As described above, the side cover 80 has the engaging claw 83 inserted into the slit opening 91a of the rear cover 90 to enter the inside of the rear cover 90 on the rear side, and the convex portion 91b is fitted into the engaging claw opening 83a. Therefore, it engages without using a screw etc., and fixes it using a screw on the front side.
Thereby, the usage-amount of the screw at the time of 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 in a state where the air purification filter 60 is attached to the front body case 11.
In a state where the front cover 70 is attached to the front main body case 11, the infrared sensor 55 b is located in the opening 72, and the screw attached to the screw opening 84 of the side cover 80 is not visible from the outside by the front cover 70.
The front cover 70 is detachable with respect to the front main body case 11. By removing the front cover 70, the air purification filter 60 can be removed and maintenance such as cleaning can be performed.

Further, since the side cover 80 is formed with the side recess 82, a gap R is formed at the position where the front cover 70 and the side cover 80 meet, and this gap R takes room air into the air purifier. It becomes the air intake port 82a.
As described above, the air intake port 82a faces in the left-right direction of the air cleaner, and can also intake air from the side of the air cleaner. That is, the air intake port 82a is oriented so that room air can be taken in from a wider range than the rotation angle of the air purifier.

Further, the air cleaner configured as described above is provided with a dust sensor (not shown) for detecting the amount of dust contained in the room air and an odor sensor (not shown) for detecting the smell of the room air. It has been.
These sensors are electrically connected to the control means, and a signal transmitted by detection by the sensor is input to the control means, and an air cleaning operation can be performed based on this signal. ing.

Each part is assembled as described above, and the air cleaner operates each part as follows to take in indoor air and clean it.
First, when the power cord 41c is connected to the 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) and the auto turn unit 40 with the respective parts assembled.

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 the rotation drive unit 44 is driven, the main body case 10 is rotated.
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 respectively positioned in the three slits formed in the partition 413a, and all the photo The interrupter enters a state where the light receiving unit detects light from the light emitting unit.

  As described above, after the operation in which the main body case 10 faces the front as the initial state is finished, the sensor drive motor 55c of the human detection device 55 performs the alignment operation described later, and then the infrared sensor 55b faces the front. Stop in state.

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

Subsequently, the fan unit 20 is driven. As a result, indoor air is sucked into the air purifier from the air intake port 82 a formed between the front cover 70 and the side cover 80.
The indoor air taken into the air cleaner passes through the prefilter 61, the HEPA filter 62, and the deodorizing filter 63, is sucked into the blade 23 of the fan unit 20 from the front, and is discharged in the rotation direction of the blade 23. Then, the air is blown out from the air outlet 51a to the outside of the air cleaner.

Here, a preset operation mode can be selected by operating a mode switch provided on the operation display unit 54.
For example, when the standard automatic operation is selected, the fan unit 20, the auto turn unit 40, and the louver 52 are operated 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, the human detection operation of the human detection device 55 will be described with reference to FIGS.
When the standard operation is started, the human detection device 55 starts a human detection operation. Then, in the human detection device 55, when the sensor drive motor 55c is driven, the case 55a in which the infrared sensor 55b is provided rotates to change the direction of the infrared sensor 55b.

The sensor drive motor 55c is set to drive an angle corresponding 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 determined from the state in which one rotation restriction rib 556a abuts the frame body 51, and the other rotation restriction rib 556a is a frame. It is set to about 156 degrees until it hits the body 51.

Referring to FIG. 13, in STEP 1, the control means controls the sensor drive motor so that the rotation restricting rib 556 a on the left side of the case 55 a rotates counterclockwise toward the abutting position 0 that is a position where it abuts the frame body 51. The left butting pulse P1 is input to 55c.
The number of input pulses of the left abutting pulse P1 is such that the sensor drive motor 55c rotates counterclockwise and the human detection device 55 abuts from the right abutting position 4 where the right rotation restricting rib 556a abuts the frame 51. The number of pulses that can rotate about 156 degrees or more to the position 0. At the stage where STEP 1 is finished, it is directed in the leftmost direction.

This STEP 1 is the first step for the control means to reset the rotational position of the sensor drive motor 55c and to perform an accurate alignment operation in the direction in which the infrared sensor 55b faces. Accordingly, even when the user touches the human detection device 55 or contacts with some object and rotates before STEP 1 is started, the alignment operation can be performed accurately. become.

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

Here, a state in which the sensor drive motor 55c is driven to rotate clockwise (counterrotation of STEP1) from the state where STEP1 is completed will be described.
First, the state in which STEP1 is finished is a state in which the left rotation restricting rib 556a of the case 55a hits the frame 51. When the sensor drive motor 55c rotates to the right, the backlash of the gears constituting the sensor drive motor 55c is reached. In addition, the sensor drive motor 55c is driven to rotate by the amount of play between the rotary shaft 551c and the case 55a.

When this play is eliminated, the rotation of the sensor drive motor 55c is transmitted to the case 55a, and the case 55a starts to rotate clockwise.
That is, even if the sensor drive motor 55c operates, the case 55a rotates the sensor drive motor 55c until the backlash of the gears constituting the sensor drive motor 55c and the backlash between the rotation shaft 551c and the case 55a disappear. Does not rotate, does not rotate.

Therefore, when it is desired to rotate (reverse) the case 55a in the right direction from the state of STEP1, even if a pulse corresponding to the amount for rotating the case 55a is input to the sensor drive motor 55c, the backlash of the gears or the backlash of each part is actually decreased. Therefore, the case 55a starts to move later than the sensor drive motor 55c.

That is, an error occurs between the angle at which the sensor driving motor 55c rotates by the input pulse and the angle at which the case 55a rotates, and the case 55a cannot be rotated at an accurate angle only by a pulse that rotates at a predetermined angle.
In order to reduce such an error, in STEP2, the first correction pulse P2 is input and the sensor drive motor 55c is driven to reduce the error of the rotation angle due to backlash and backlash of each part.

Next, in STEP 3, the control means inputs an initial position setting pulse P 3 for rotating clockwise 3 degrees to the sensor drive motor 55 c, and drives from the butting position 0 to the left stop position 1. Thereby, 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 striking the frame 51 at the left stop position 1 where the rotation direction is changed in the process in which the human detection device 55 rotates in the left-right direction and performs the human detection operation. .
As described above, STEP 1 to STEP 3 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 way, the air cleaner can be directed correctly based on the detection result of the human detection device 55.

Next, when human detection is started, in STEP 4, the control means inputs a right rotation pulse P4 that rotates clockwise by 150 degrees to the sensor drive motor 55c, and drives from the left stop position 1 to the right stop position 3. .
Here, the infrared sensor 55b detects infrared rays from the object in the range of the detection visual field, and inputs the signal to the control means. And a control means determines the position where a person exists from the input signal from the infrared sensor 55b, and the pulse of the sensor drive motor 55c of the position where the signal was 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 a number that corrects backlash of the gears constituting the sensor drive motor 55c and play (play) of the connection between the rotary shaft 551c and the case 55a.

Similar to the first correction pulse P2, the second correction pulse P5 is used to reduce an error between the angle at which the sensor drive motor 55c is rotated by the input pulse and the angle at which the case 55a is rotated. The comparison between the absolute value of the second correction pulse P5 and the absolute value of the first correction pulse P2 is set to satisfy P2> P5.
This is because the case 55a is in contact with the main body case 10 at the abutting position 0 and is pressed in the rotational direction, so that the backlash when the sensor drive motor 55c is reversed is large.

On the other hand, there is a clearance of 3 degrees between the right stop position 3 and the right abutting position 4, and the case 55 a does not hit the main body case 10. Is small.
Therefore, the error can be appropriately corrected by setting the magnitude of the second correction pulse P5 to be smaller than the magnitude of the first correction pulse P2.

Next, in STEP 6, the control means inputs a left rotation pulse P6 that rotates 150 degrees counterclockwise to the sensor drive motor 55c, and drives from the right stop position 3 to the left stop position 1.
Here, the infrared sensor 55b detects infrared rays from the object in the range of the detection visual field, and inputs the signal to the control means. And a control means determines the position where a person exists from the input signal from the infrared sensor 55b, and the pulse of the sensor drive motor 55c of the position where the signal was 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 a number that corrects backlash of the gears constituting the sensor drive motor 55c and play (play) of the connection between the rotary shaft 551c and the case 55a.

Similar to the first correction pulse P2, the third correction pulse P7 is used to reduce an error between the angle at which the sensor drive motor 55c is rotated by the input pulse and the angle at which the case 55a is rotated. The comparison between the absolute value of the third correction pulse P7 and the absolute value of the first correction pulse P2 is set to satisfy P2> P7.
This is because the case 55a is in contact with the main body case 10 at the abutting position 0 and is pressed in the rotational direction, so that the backlash when the sensor drive motor 55c is reversed is large.

On the other hand, there is a clearance of 3 degrees between the left stop position 1 and the left abutting position 4, and the case 55 a does not strike the main body case 10. Is small.
Therefore, the error can be appropriately corrected by setting the magnitude of the third correction pulse P7 to be smaller than the magnitude of the first correction pulse P2.

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 to correspond to the direction in which the human detection device 55 faces. It is possible to detect the presence of a person and grasp the position where the person exists.
In particular, in addition to the scanning operation of the sensor drive motor 55c of the human detection device 55, the auto turn unit 40 is rotated to change the direction of the main body case 10, thereby enabling a wider range of human detection.
And a control means drives the rotation drive unit 44 and the rotation position detection means 45 of the auto turn unit 40 based on the detection result of the person detection apparatus 55, and orient | assigns the front of an air cleaner to the direction where a person exists.

Further, the louver drive motor 53 is driven to direct the louver 52 in the vertical direction. Thereby, since the air intake port 82a is directed in the left-right direction of the air cleaner M, the air intake port 82a is oriented 90 ° with respect to the direction in which the person is present from the air cleaner, and the blowing air is directed in the direction in which the person is present. Since the air can be blown, dust around the person can be efficiently transported to the vicinity of the air cleaner, and there is no blown air to the person.

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

M air purifier, 10 body case, 11 front body case, 11a upper partition, 111a upper opening, 11b lower partition, 111b lower opening, 11c sensor opening, 12 rear body case, 12a upper scroll housing, 121a upper opening, 122a upper Recess, 12b Lower scroll housing, 121b Upper opening, 122b Lower recess, 12c Space, 12x Wall partitioning front and rear, 13 Fan guard, 14 Guard net, 20 Fan unit, 21 Motor, 21a Rotating shaft, 22 Motor cover, 23 Wings , 30 substrate unit, 31 printed wiring board, 32 first substrate case, 33 second substrate case, 40 auto turn unit, 41 base base, 41a base base recess, 413a partition, 414a slit, 415a rack gear, 41 Center convex part, 41c Power cord, 42 Bottom body case, 42a Bearing, 421a Side opening, 42b Flange, 42c Wheel housing, 42d Photo interrupter mounting concave part, 43 Auto turn shaft, 43a Through hole, 431a Groove part, 44 Rotation drive unit, 44a Stepping motor, 441a Rotating shaft, 44b Pinion gear, 44c Bearing holding plate, 44d Motor case, 45 Rotating position detecting means, 46 Sliding plate, 46a Sliding plate opening, 46b Flange recess, 47 Sliding plate presser, 48 Base Table side wheel, 49 Main body side wheel, 50 Upper unit, 51 Frame, 51a Outlet, 51b Stepped part, 51c Front concave part, 52 louver, 53 Louver drive motor, 54 Operation display part, 54a Operation board, 541a Substrate concave part, 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 capturing opening, 555a shaft connection, 556a rotation restriction rib, 55b Infrared sensor, 551b Sensor holding frame, 55c Sensor drive motor, 551c Rotating shaft, 60 Air cleaning filter, 61 Pre-filter, 62 HEPA filter, 63 Deodorizing filter, 70 Front cover, 71 Recess, 72 Sensor opening, 80 Side cover, 81 Hand recess, 82 Side recess, 82a Air intake port, 83 Engagement claw, 83a Engagement claw opening, 84 Screw opening, 90 Rear cover, 91 Engagement receiving part, 91a Slit opening, 91b Convex part

Claims (7)

A main body case, an operation display section provided on the upper portion of the main body case, and a human detection device for detecting a position where a person exists
The main body case is provided with a fan for taking in indoor air and an air purifying filter for purifying the taken in indoor air,
A concave portion is formed in a surface facing the front of the operation display portion, and the human detection device is located inside the concave portion.   The human detection device includes a case, an infrared sensor, and a drive motor, the case holds the infrared sensor therein, and a rotation shaft of the drive motor is connected to rotate the case. Item 2. The air cleaner according to Item 1. The operation display unit has an operation board on which a switch and a light emitting unit are mounted,
The air cleaner according to claim 1, wherein the concave portion is formed by forming the operation board in a shape partially cut out from a front side. The operation display unit is provided on the operation board, and includes an operation frame provided with an opening which serves as an optical path for guiding the light of the light emitting unit and a link for pressing the switch.
The air cleaner according to claim 3, wherein the recess is formed by forming the operation frame in a shape partially cut out from the front side.   The air cleaner according to any one of claims 2 to 4, wherein the infrared sensor includes a plurality of light receiving elements, and the light receiving elements are arranged upward from the horizontal in the case. A front cover that covers the main body case and the operation display unit from the front;
The cover is formed with a sensor opening facing the infrared sensor and a recess extending in the left-right direction of the sensor opening,
The air cleaner according to any one of claims 2 to 6, wherein the front surface of the human detection device is substantially flush with the front surface of the front cover in a state where the human detection device is positioned in the sensor opening. .   The air cleaner according to claim 2, further comprising a rotation mechanism that changes a direction of the main body case.