JP2016180561A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cleaner capable of detecting a direction of existence of a human with high accuracy while rotating an air cleaner body to the right and left.SOLUTION: An air cleaner includes a body case 10, a human detecting device 55 held to be directed in a front direction of the body case 10 and detecting a direction where a human exists with respect to the front direction of the body case 10, a driving motor for rotating the human detecting device 55 to the body case 10 in right and left directions, and a rotation mechanism 40 for changing orientation of the front direction of the body case 10 to the right and the left directions. A fan for taking indoor air in an inside thereof and an air cleaning filter 60 for cleaning the taken indoor air are provided in the body case 10. The front direction in rotation in the right and the left directions of the body case 10 is defined as a reference direction, and detection operation of the human detecting device 55 in the direction where the human exists with respect to the reference direction is performed in a state in which the body case 10 is directed in the reference direction.SELECTED DRAWING: Figure 2

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 directivity 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

  When the base that supports the air purifier body is placed on the floor and the air purifier body rotates in the left-right direction with respect to the base and a sensor that detects the position of the person is located above the body, Because the reference position of the sensor that detects the sensor changes depending on the direction of the main body, the direction of the person detected when the main body faces one direction and the direction of the person detected when the main body faces a different direction When compared with the detection direction, there is a problem that the accuracy is lowered and a possibility of erroneous determination occurs.

  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 capable of detecting the presence direction of a person with high accuracy while rotating the main body to the left and right. To do.

  An air cleaner according to the present invention includes a main body case, a human detection device that is held in the front direction of the main body case and detects a direction in which a person is present with respect to the front direction of the main body case, and a human detection device. It has a drive motor that rotates in the left-right direction with respect to the main body case, and a rotation mechanism that changes the direction of the front direction of the main body case in the left-right direction. An air purifying filter for cleaning is provided, and in the detection operation of the human detection device in the direction in which a person is present with respect to the reference direction, the front direction in the rotation of the main body case in the left-right direction is the reference direction. It is to be done in the state.

  Further, the main body case, a human detection device that is held in the front direction of the main body case and detects a direction in which a person is present with respect to the front direction of the main body case, and the human detection device are Drive motor that rotates in the direction and a rotation mechanism that changes the front direction of the main body case to the left and right direction. The main body case has a fan that takes in indoor air and an air purifying filter that cleans up the taken indoor air. The direction in which a person is present with respect to the reference direction is rotated in the left-right direction and information on the orientation of the body case in the left-right direction with respect to the reference direction. Direction determining means for determining using the direction detected by the human detection device with respect to the front direction of the main body case. It is performed in a state facing the direction different directions.

  ADVANTAGE OF THE INVENTION According to this invention, the air cleaner which can detect a person's presence direction with high precision can be provided.

It is a perspective view of the air cleaner M of Embodiment 1 of this invention. It is the sectional view on the AA line of the air cleaner M in FIG. 1 is a schematic exploded perspective view of an air cleaner M. FIG. 2 is a detailed exploded perspective view of the air cleaner M. FIG. 3 is a perspective view of an auto turn unit 40. FIG. (A) is a top view of the auto turn unit 40, (b) is the BB sectional drawing in (a). 3 is an exploded perspective view of an auto turn unit 40. FIG. 4 is an exploded perspective view of an upper unit 50. FIG. FIG. 6 is an exploded perspective view of the human detection device 55. 6 is a longitudinal sectional view of the human detection device 55. FIG. It is a schematic diagram which shows the visual field of the up-down direction of the infrared sensor 55b. It is a figure explaining the rotational drive angle of the human detection apparatus. It is a conceptual diagram explaining the rotation drive operation | movement of the person detection apparatus 55. FIG. (A) is a figure explaining the person detection area of the person detection apparatus 55, (b) is a figure explaining the rotation drive angle range of a main body case.

  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.

Embodiments Referring to FIGS. 1 to 4, an air cleaner M of the present embodiment includes a main body case 10, a fan unit 20, and a board unit 30 (see FIG. 4, a printed wiring board 31 and a first board described later). A case 32 and a second substrate case 33), an auto turn unit 40 which is a rotation mechanism for changing the orientation of the main body case 10, an upper unit 50, an air purifying filter 60, a front cover 70 covering the front surface, and left and right side surfaces Side cover 80 that covers the rear surface, rear cover 90 that covers the rear surface, and parts 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 in the front-rear direction. Moreover, the upper partition 11a is located ahead of the lower partition 11b.
Further, a sensor opening 11 c is formed in 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 on which electronic components are mounted, a first board case 32 formed of a resin that houses the printed wiring board 31, and the printed wiring board 31 inside. It has a second substrate case 33 made of metal for housing the held first substrate case 32.
The board 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 is a rotation mechanism that changes the front direction of the main body case 10 in the left-right direction. The front direction (the center direction of the left and right rotations) in the left and right rotation of the main body case 10 is set as a reference direction. 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.

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.

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.

Thus, when the bottom main body case 42 rotates and changes the front direction of the main body case 10 (air purifier M), the photo interrupter which is the rotation position detecting means 45 rotates together with the bottom main body case 42.
The slit 414a is positioned between the light emitting unit and the light receiving unit depending on the rotational position, and the light receiving unit detects light from the light emitting unit.
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.

  As shown in FIG. 8, the louver 52 has a plate that surrounds the four outer peripheral surfaces of the opening that is the outermost edge of the louvers 52 arranged in the front-rear direction, and substantially parallel to the left and right side walls of the four surfaces. And a plurality of rectifying plates fixed between the left and right side walls. The plurality of rectifying plates are firmly fixed to the upper and lower walls, and have a structure that does not generate vibration or abnormal noise even when an airflow having a high flow velocity collides. The plurality of rectifying plates rectify the airflow discharged from the fan so as to direct the airflow upward.

In FIG. 8, two sets of the louvers 52 are arranged in the front-rear direction of the air outlet.
In order to direct the clean airflow discharged from the air outlet of the air purifier to an arbitrary space, it is necessary to change the airflow back and forth and from side to side. The change in the front and back (mainly, the diagonal direction from directly above to the front) may be controlled by changing the louver angle. It is desirable to avoid tilting the main body or the blower back and forth because the structure becomes complicated.

  It is desirable that the left and right changes be rotated together with the main body as in the conventional example and the example. It is possible to bend the airflow to the right or left by providing the louver with a baffle plate that can be changed in the left and right direction, and by controlling the angle of the baffle plate, but forcibly bending the airflow at a position where the flow velocity is fast, This increases driving noise due to the collision of the airflow with the wind guide plate, and increases the pressure loss because the wind guide plate becomes the resistance of the air flow, causing the air volume to decrease.

  The blower for the air cleaner M often uses a centrifugal fan such as a sirocco fan or a turbo fan. Since the blown air from the centrifugal fan has strong directivity in the circumferential direction of the blades, bending the airflow in the left-right direction of the main unit, that is, the direction against the vector, on the downstream side of the fan is the case of bending in the front-rear direction Compared to the above, it is likely to cause an increase in the operation sound and a decrease in the air volume. Therefore, in the above configuration, if the louver 52 arranged at the front and back is rotated together with the main body case 10, the structure of the auto turn unit 40 that is the base becomes complicated, but the change in the air flow by the baffle plate decreases the air blowing performance, That is, an increase in driving sound and a decrease in air volume can be minimized.

Note that the plurality of rectifying plates may not be parallel to the side walls, but may have a shape in which the direction of the airflow blown from the fan is adjusted to an optimum angle that directs upward of the main body.
Further, the mounting angle in the left-right direction can be varied at the same time or each different angle, and the structure and control can be adjusted manually or automatically so that the direction of the airflow can be controlled more finely.
Further, the front and rear operating angles of the front and rear louvers 52 are not the same, and may be operated at different angles. By setting a different value, it is possible to perform finer control such as wide or spot before and after depending on the blowing direction.
Further, the angle control of the louver 52 is preferably performed so that the front louver 52 is closed first when the louver 52 is closed, particularly at the end of the operation. By adopting such control, the front and rear louvers 52 can be smoothly closed without interference.
Further, the louver 52 may be one set or three or more sets depending on the opening area of the outlet and the aspect ratio.

  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 human detection device 55 is held in the front direction of the main body case 10. The person detection device 55 detects the direction in which a person exists with reference to the front direction of the main body case 10.
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 driving 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 rotating 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 angle width of 150 ° in the horizontal direction (left-right direction) with respect to the front direction of the main body case 10.
Referring to FIG. 12, the angle from the left stop position 1 to the right stop position 3 of the infrared sensor 55b is 150 °, the angle from the left butting position 0 to the left stop position 1, and the right butting position 4 to the right stop position. The angle up to 3 is set at 3 °. Thereby, the infrared sensor 55b is configured not to be able to rotate beyond the angle 156 ° 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 150 ° in the horizontal direction, scans the room temperature, and detects the presence of a person and the person's view from the air purifier based on the temperature detection result. The existence direction 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 by α ° per pulse, for example. That is, when 100 pulses are input per second, the rotation is (100 × α) °.

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.

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 side on the left and right. 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 located 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 degrees centering on the sensor opening 72 according to the rotation angle of the infrared sensor 55b. Accordingly, 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 recess 122a and the lower recess 122b with the axial direction of the rotating shaft 21a 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.

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. 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 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.

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.

Furthermore, the air purifier thus configured 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 odor 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 ° 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. Further, the operation of the auto turn unit 40 is provided with a mode for selecting the direction of the main body case 10 and the frequency of rotation in the operation display unit 54, and the selected operation mode is executed by the control means.
The orientation of the main body case 10 and the type of rotation frequency may be, for example, “front fixed”, “right fixed”, “left fixed”, or “repetitive repetitive round trip from right to left”. That's fine.

Next, the human detection operation of the human detection device 55 will be described with reference to FIG. 12, FIG. 13, and FIG.
The human detection operation is performed with the main body case 10 facing the reference direction. Here, the reference direction of the main body case 10 is a front direction (a central direction of the left and right rotations) in the horizontal rotation of the main body case 10.

The human detection operation is performed at regular intervals such as every 10 minutes or every 15 minutes. Alternatively, when the main body case 10 faces the front (reference direction), the human detection operation may be continuously performed, and the presence / absence of the person and the change in the direction may be determined more quickly.
In addition, when the person detection is performed only when the main body case 10 is facing the front as in the above example, the result obtained by one person detection is updated each time, the latest person direction, The rotation direction of the main body case 10 may be determined according to the presence or absence.
In addition, the past detection results of two or more times before may be stored, and the rotation direction of the main body case 10 may be determined according to the case where there are a plurality of people or the direction in which the people are long. .

  When the operation of the air cleaner M 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, and the direction of the infrared sensor 55b is changed.

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 where one rotation restriction rib 556a hits the frame body 51 and the other rotation restriction rib 556a is a frame. The angle is set to 156 ° until it hits the body 51.

This will be described with reference to FIG.
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.

In STEP1, the control means applies a left abutting pulse to the sensor drive motor 55c so that the rotation restricting rib 556a on the left side of the case 55a rotates counterclockwise toward the abutting position 0 that is a position against the frame 51. Enter P1.
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 regulating rib 556a abuts the frame 51. This is the number of pulses that can rotate about 156 ° or more to the position 0. At the stage where STEP 1 is finished, it is directed in the leftmost direction.

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 a number that corrects backlash of the gears constituting the sensor drive motor 55c and play (play) between the rotation 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 clockwise (counterrotation of STEP1) from the state where STEP1 is completed will be described.
First, the state in which STEP1 is completed 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.
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 constituting the sensor drive motor 55c and the backlash between the rotary shaft 551c and the case 55a are eliminated. 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 drive 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 can be input to drive the sensor drive motor 55c, thereby reducing the error in 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 that rotates clockwise 3 ° to the sensor drive motor 55 c and drives the sensor drive motor 55 c from the butting position 0 to the left stop position 1. Thereby, an interval of 3 ° 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, the human detection operation is started from STEP4. When the human detection operation is started, the control means inputs a right rotation pulse P4 that rotates clockwise by 150 ° 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 rotates by the input pulse and the angle at which the case 55a rotates. 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, the right stop position 3 has a clearance of 3 ° between the right stop position 3 and the right abutting position 4, and the case 55a does not hit the main body case 10, so that the backlash when the sensor drive motor 55c is reversed is reversed. 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 P 6 that rotates counterclockwise by 150 ° to the sensor drive motor 55 c and drives it 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 direction 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 rotating shaft 551c and the case 55a.

Similar to the first correction pulse P2, the third correction pulse P7 is for reducing 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 ° between the left stop position 1 and the left abutting position 4, and the case 55a does not abut against the main body case 10, so that the backlash when the sensor drive motor 55c is reversed is reversed. 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. The presence / absence of a person can be detected to determine the direction in which the person exists.
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 a substantially 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 directed substantially perpendicular to the direction in which the person is present from the air cleaner, and blows the blowing air in the direction in which the person is present. Therefore, dust around the person can be efficiently transported to the air cleaner, and the blowout air does not hit the person.

Further, in such a state, when the room air has a lot of dust or strong odor based on the detection result 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.
The human detection operation is not performed every predetermined time as in the above embodiment, and in the above state, the dust sensor and the odor sensor do not detect dirt or odor in the room for a certain time, or the detection value is a predetermined value. If it is less than the value, the human detection device 55 may resume human detection again.

Next, a method and operation for determining the orientation of the main body case 10 based on the detection result of the direction in which a person exists will be described.
The left and right detection range of the human detection device 55 for detecting a person is 150 ° to the left and right. The control means takes in the data for 150 °, and determines whether or not there is a person for each of the five areas (areas a to e in FIG. 14) having an angle width of 30 ° to the left and right by dividing 150 ° equally into five. . The respective central directions of the areas a, b, c, d, and e are defined as ac, bc, cc, dc, and ec, respectively.

When a person is present only in the farthest area among the five areas, for example, the area a, the auto turn unit 40 moves in the direction of the left end of the area a (75 ° to the left from the front direction (reference direction) of the main body case 10). It is not necessary to rotate the main body case 10 beyond the range. That is, the range of the rotation angle of the human detection device 55 may be equal to or greater than the range of the rotation angle in the left-right direction of the front direction (reference direction) of the main body case 10. By adopting such a configuration, the main body case 10 does not rotate beyond the human detection angle range of the human detection device 55 and the rotation angle range of the main body case 10 can be suppressed. The air cleaner M can be prevented from interfering with surrounding furniture and walls.

Further, when a person is present only in the area a, which is the endmost area among the five areas, the auto turn unit 40 moves from the center direction ac of the area a, that is, from the front direction (reference direction, center direction of the area c). There is no need to rotate the main body case 10 beyond the direction of 60 ° to the left.

In this case, the finer direction of the person within the 30 ° angle range of the area a is not determined by the control means, but the airflow blown out from the louver 52 is not an airflow having a narrow angle in the left-right direction. Because the air flow has the same width as the width, clean air can be sent to almost the entire area a, and the size of the person also has a width, so the direction in which the person exists is cleaned. Therefore, it can be said that sufficient accuracy is obtained.

Thus, the range of the rotation angle of the human detection device 55 is divided into a plurality of areas for determining the presence or absence of a person, and the angle formed by the central direction of the left and right end areas is the direction of the front direction of the main body case 10. The rotation angle in the left-right direction may be greater than the range. With such a configuration, the rotation angle range of the main body case 10 can be minimized, so that the smaller the drive angle of the main body case, the smaller the structure of the drive section of the main body case, and in particular the foundation Contributes to miniaturization of parts. Further, the rotation of the air cleaner M can further suppress the air cleaner M from interfering with surrounding furniture and walls.

  In addition, when a person is divided into a plurality of five areas, the size of the heat source detected by the human detection device 55 (expansion of the angular range in which the heat source is detected), for example, closer to the main body if the heat source is large It is determined that there is a high possibility that there is a person at the position, the direction in which the heat source is large is given priority, the direction in which the main body case 10 is directed is determined, or the direction in which a person detected in the past is always stored is stored, and the rotation direction For example, it may be possible to provide means for determining the priority direction, for example, by determining that the direction rotated in the previous time is already clean and giving priority to a direction different from the previous direction.

  Since the horizontal cross section of a general air cleaner is a rectangle that is long on the left and right, in order to prevent interference with surrounding furniture and walls when the main body case rotates, the drive angle of the main body case is 90 ° ( Ideally, it should be suppressed to about 45 ° on the left and right. In addition, since recent air purifiers tend to be larger, when driving a large main body case 10, the smaller the drive range is, the higher the apparent security at the time of operation. Therefore, in order to clean the direction in which the person is present by setting the detection range of the human detection device 55 to 150 ° with respect to the detection range of the main body case 10 and to clean the direction in which a person exists, the width of the air flow blown out from the louver 52 is set to a wide angle. Thus, a means such as providing a louver 52 with an air guide plate is effective.

It should be noted that the number of areas for determining the direction in which a person is present is less than 5 areas with respect to the 150 ° detection area detected by the human detection device, for example, 3 areas, and the rotation of the main body case 10 is easier. It may be. In this case, since the processing capability of the control means can be further reduced, a cheaper microcomputer or the like can be adopted as the control means. Further, if the driving range of the main body case is set to the center direction of the three areas, the driving range can be set to 100 °, so that the structure of the driving unit can be further simplified and the size of the base can be reduced.

Alternatively, the number of areas is further subdivided according to the resolution of the human detection device that detects the direction in which the person is present and the processing capability of the control means, for example, 150 areas, the detection range of the human detection device and the rotation angle of the main body May be controlled so that the main body is directed toward the person with higher accuracy. In this case, the structure of the drive unit of the main body case and the size of the base become large, but it becomes possible to clean the air around the person with higher accuracy and faster.

As described above, according to the air cleaner of the embodiment, the main body case and the person detection device that is held in the front direction of the main body case and detects the direction in which a person exists with respect to the front direction of the main body case. And a drive motor that rotates the human detection device in the left-right direction with respect to the main body case, and a rotation mechanism that changes the direction of the front direction of the main body case in the left-right direction. And an air purifying filter that cleans the captured indoor air, the front direction in the rotation of the main body case in the left-right direction is a reference direction, and the detection operation of the human detection device in the direction in which a person exists with respect to the reference direction is Since the main body case is oriented in the reference direction, the front direction of the main body case serving as a reference for the direction in which the person is detected by the human detection device is the right and left of the main body case. Coincides with the reference direction of the direction can be obtained capable air purifier to detect the presence direction of the human with high accuracy.

  In the above-described embodiment, the front direction in the rotation of the main body case in the left-right direction is the reference direction, and the detection operation of the human detection device in the direction in which a person is present with respect to the reference direction is such that the main body case faces the reference direction. It is performed in the state where it is. In this embodiment, the direction in which the person is present with respect to the reference direction is the information on the orientation of the main body case in the left-right direction relative to the reference direction and the detection of the human detection device with respect to the front direction of the main body case rotated in the left-right direction. Direction determining means for determining using the operating direction, and the detection operation of the human detection device is performed in a state where the main body case faces a direction different from the reference direction.

  As shown in FIG. 14B, the main body case 10 stops at a fixed position in any of the left and right directions including the front (reference direction), and the human detection device 55 performs the human detection operation in this stopped state. I do. That is, the four directions excluding the front (reference direction) are different from the reference direction. As described above, the human detection device 55 performs the human detection operation even when the main body case 10 faces in a direction different from the reference direction. The rotation angle of the main body case 10 is 45 ° maximum on one side and 90 ° total left and right to prevent interference with furniture and walls during rotation, regardless of the position of the main body. , 5 directions of right (or left) 22.5 ° and 45 °.

  The respective directions are R1 (right 45 °), R2 (right 22.5 °), C (front, reference direction), L1 (left 45 °), and L2 (left 22.5 °). Here, the right direction is a positive angle with respect to the reference direction. In the state where the main body case 10 is oriented in the direction of α ° with respect to the reference direction, the direction in which the person detected by the human detection device 55 exists with reference to the front direction of the main body case 10 is β °. The control means (direction determining means) determines the direction in which the person exists with respect to the reference direction in this case as (α + β) °. For example, when human detection is performed with the main body case 10 facing the direction R1, the human presence direction detected by the human detection device 55 based on the front direction of the main body case 10 facing the direction R1 is the right 30. °. In this case, the control means determines the direction in which the person exists with respect to the reference direction as (+ 45 °) + (+ 30 °) = (+ 70 °), that is, 70 ° to the right. Here, the control means detects the direction in which the front direction of the main body case 10 is directed with respect to the reference direction from the number of steps issued by the control means and the driving angle per step (for example, 1 °).

For example, when the main body case 10 performs the human detection operation once in the front direction (reference direction) and the second human detection operation is performed when the main body case 10 is directed to the right 45 °. To do. In this case, the control means reads the data in the front direction of the second human detection device 55 as data in the direction of 45 ° to the right with respect to the front of the bottom main body case 42. Thereby, the main body case 10 can superimpose the first data in the front direction and the second data of 45 ° on the basis of the bottom main body case 42.
In this way, in addition to the determination of the presence of the person alone and the direction of the second data alone, by superimposing the first data and the reference position of the detection direction, regardless of the orientation of the main body case during the human detection operation, The history of human movement can also be accumulated accurately.

Further, due to backlash and structural part errors when driving the main body case 10 and the case 55a of the infrared sensor 55b, the actual reference position change of the structural part and the angle at which the data is corrected by the control means are slightly shifted. In this case, it is possible to prevent erroneous determination of the direction of the person due to an angle shift by intentionally reducing the accuracy of the person determination in the left-right direction.
As a specific means for reducing the accuracy of the determination, it is effective to provide a wider determination range of the boundary of the heat source or the temperature difference based on the data captured by the infrared sensor.

As described above, the detection operation of the human detection device 55 is performed in a state in which the main body case 10 faces a direction different from the reference direction, so that in addition to the scanning operation of the sensor drive motor 55c of the human detection device 55, the auto turn By rotating the unit 40 and changing the direction of the main body case 10, a wider range of people can be detected.

Further, during measurement of human detection, a function of notifying the user that the measurement is being performed may be provided by lighting or blinking the LED of the operation display unit 54 provided on the top surface of the main body case. .
As a result, when the main body case 10 returns to the front each time a human detection operation is performed, even if the user is in the right or left direction, the main body case is facing the front, even if the user feels uncomfortable. By notifying with LED that it is, the effect which reduces a sense of incongruity is acquired.

As described above, according to the air cleaner of the embodiment, the main body case and the person detection device that is held in the front direction of the main body case and detects the direction in which a person exists with respect to the front direction of the main body case. And a drive motor that rotates the human detection device in the left-right direction with respect to the main body case, and a rotation mechanism that changes the direction of the front direction of the main body case in the left-right direction, and the main body case has a fan that takes in indoor air inside And an air purifying filter that cleans the captured indoor air, the front direction in the rotation of the main body case in the left-right direction is the reference direction, and the direction in which a person is present with respect to the reference direction is A direction determining means for determining the direction using direction information and a direction detected by the human detection device with respect to the front direction of the main body case rotated in the left-right direction, The detection operation of the ejecting device is performed in a state in which the main body case faces a direction different from the reference direction, so that the human detection operation is performed with respect to the reference direction of the main body case without impairing the detection accuracy of the person's existence direction. However, it is wider than the angle range for performing the human detection operation of the human detection device alone, and a wider range of human detection is possible.

  In addition, the detection operation of the human detection device is performed in a state where the main body case faces a preset direction with respect to the reference direction, thereby facilitating determination of the direction in which the person exists with respect to the reference direction of the main body case.

  In addition, since a display means for displaying that the detection operation is being performed is provided during the detection operation of the human detection device, the user can recognize that the air cleaner is performing the detection operation. It is possible to suppress the user from feeling uncomfortable when the main body case returns to the front direction each time.

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 part, 12b Lower scroll housing, 121b Upper opening, 122b Lower recessed part, 12c Space part, 12x Wall surface partitioned forward and backward, 13 Fan guard, 20 Fan unit, 21 Motor, 21a Rotating shaft, 22 Motor cover, 23 Wings, 30 Substrate unit , 31 Printed wiring board, 32 First board case, 33 Second board case, 40 Auto turn unit, 41 Base base, 41a Base base recess, 413a Partition, 414a slit, 415a Rack gear, 41b Center convex part, 41 Power cord, 42 Bottom body case, 42a Bearing, 421a Side opening, 42b Flange, 42c Wheel housing, 42d Photo interrupter mounting recess, 42e Stopper, 43 Auto turn shaft, 43a Through hole, 431a Groove, 44 Rotation drive unit, 44a Stepping Motor, 441a Rotating shaft, 44b Pinion gear, 44c Bearing holding plate, 44d Motor case, 45 Rotating position detection means, 46 Sliding plate, 46a Sliding plate opening, 46b Flange recess, 47 Sliding plate presser, 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, 54a Operation board, 541a Substrate recess, 54b Operation Frame, 541b Optical path opening, 541h Light emitting part, 541s switch, 542b link, 543b Operation frame recess, 54c Seat, 55 person detection device, 55a Case, 551a Housing, 552a Lid, 553a Lower opening, 554a Infrared light receiving opening, 555a Axis Connection part, 556a Rotation restriction 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 Recessed part, 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 Slip G opening, 91b convex part.

Claims (4)

A main body case, a human detection device that is held in a front direction of the main body case and detects a direction in which a person is present relative to the front direction of the main body case; and the human detection device with respect to the main body case A drive motor that rotates in the left-right direction, and a rotation mechanism that changes the direction of the front direction of the main body case in the left-right direction;
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,
The detection operation of the human detection device in a direction in which a person is present with respect to the reference direction is a state in which the main body case faces the reference direction, with the front direction in the left-right rotation of the main body case as a reference direction. An air purifier characterized by performing. A main body case, a human detection device that is held in a front direction of the main body case and detects a direction in which a person is present relative to the front direction of the main body case; and the human detection device with respect to the main body case A drive motor that rotates in the left-right direction, and a rotation mechanism that changes the direction of the front direction of the main body case in the left-right direction;
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,
The front direction in the rotation of the main body case in the left-right direction is a reference direction, and the direction in which a person is present with respect to the reference direction is rotated in the left-right direction and information on the direction of the main body case in the left-right direction with respect to the reference direction. Direction determining means for determining using the direction detected by the human detection device relative to the front direction of the body case,
The air cleaner according to claim 1, wherein the detection operation of the human detection device is performed in a state where the main body case faces a direction different from the reference direction.   The air cleaner according to claim 2, wherein the detection operation of the human detection device is performed in a state where the main body case faces a preset direction with respect to the reference direction.   The air cleaner according to any one of claims 1 to 3, further comprising display means for displaying that the detection operation is being performed during the detection operation of the human detection device.

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