TWI577940B - Air purifier - Google Patents

Description

Air purifier

The present invention relates to an air cleaner that removes dust from the inhaled air and blows out the cleaned air.

In the past, for example, an air cleaner capable of changing the direction of the intake port described in Patent Document 1 has been known. In detail, a detector in the scanning chamber is installed in the air cleaner to detect the person. Moreover, the body is rotated such that the suction port disposed in front of the air cleaner body faces the direction of the person detected by the detector.

Advanced technical literature Patent literature

Patent Document 1: Japanese Laid-Open Patent Publication No. 2-245212

The above-described conventional air cleaner is configured to actively inhale the air around the person to purify the air by causing the intake port disposed in front of the body of the air cleaner to face the direction in which the person is present. However, the air speed of the air sucked into the air cleaner is slower than the wind speed of the air blown by the air cleaner. Therefore, the light is controlled by the suction direction that directs the suction port toward the direction in which the person is present, possibly It is impossible to inhale the air around the person efficiently. Further, in the above-described conventional technique, since the direction of the blown air blown from the air cleaner is not taken into consideration, there is a possibility that the blown air is directly blown to the person to cause a person's unpleasant feeling.

The present invention has been made in order to solve the above problems, and an object thereof is to provide an air cleaner which does not bring a feeling of discomfort to a person inside the room, and can efficiently purify the air around the person.

An air cleaner according to the present invention includes: a casing having a suction port for drawing in air in the room and an air outlet for blowing the air; and an air blowing device for drawing air from the suction port into the casing and separating the air from the air inlet The air outlet is blown out; the cleaning device cleans the air flowing inside the casing; and the wind direction variable mechanism has a function of changing the wind direction of the blown air blown from the air outlet; the human detecting device detects The direction of the person is derived or the direction of the person is estimated from the detected value; the control device controls the air blowing device and the variable direction mechanism. The control device has a wind direction control function that is controlled such that when a person in the room is detected by the person detecting device, the front-rear direction component of the wind direction vector at the maximum wind speed of the wind direction faces the direction of the person, the wind direction vector The total vector of omnidirectional components is oriented in the direction of no one.

According to the present invention, when a person indoors is detected, it is controlled such that the front-rear direction component of the wind direction vector at the maximum wind speed in the wind direction faces the direction of the person, and the total vector of the omnidirectional components of the wind direction vector faces the direction in which no one is present. In this way, people in the room are not unpleasant, and the air around the person can be cleaned efficiently.

1‧‧‧Air Purifier

2‧‧‧Shell

2A‧‧‧ next door

3‧‧‧Base

4‧‧‧Inhalation

5, 5A, 5B‧‧‧ blown out

6‧‧‧Air supply device

6A‧‧‧fan

6B‧‧‧Motor

7,7A, 7B‧‧‧ Wind Road

8‧‧‧Clean purification device

9‧‧‧ movable grid (variable wind direction)

10‧‧‧ grid drive unit (variable wind direction mechanism)

11‧‧‧Open variable mechanism

12‧‧‧Open drive department

13‧‧‧Rectifier mechanism (variable wind direction mechanism)

14‧‧‧Rectification drive unit (variable wind direction mechanism)

15‧‧‧ horizontal slewing mechanism (variable wind direction mechanism)

20‧‧‧Stain detection device (dirty level information detection device)

21‧‧‧ Person detection device (person detection device)

22‧‧‧Operation Department

23‧‧‧Control device

40‧‧‧Infrared detector

41‧‧‧Multi-component light receiving unit

41a~41h‧‧‧Light-receiving components (detection components)

42‧‧‧ collecting lens

43,43a~43h‧‧‧ alignment angle

44‧‧‧Detector action unit (detector action mechanism)

50‧‧‧wind direction vector

50a‧‧‧Vertical direction vector

50b‧‧‧ front and rear direction vector

50c‧‧‧ direction vector

Fig. 1 is a perspective view showing an air cleaner according to a first embodiment of the present invention.

Fig. 2 is a longitudinal sectional view showing the air cleaner in Fig. 1.

Fig. 3 is an enlarged view of an essential part in the first diagram showing the operating states (a) and (b) of the movable grid and the rectifying mechanism.

Fig. 4 is a view showing the configuration of a control system of the air cleaner according to the first embodiment of the present invention.

Fig. 5 is a cross-sectional view showing the structure of the infrared detector.

Fig. 6 is a perspective view showing the arrangement of the light receiving elements of the infrared detector and the viewing angle of the light distribution.

Fig. 7 is an explanatory view showing the turning operations (a), (b), and (c) including the infrared detector external detecting device.

Hereinafter, embodiments for carrying out the invention will be described with reference to the drawings. In the drawings, the same or corresponding components are designated by the same reference numerals, and the repeated description is omitted or omitted as appropriate. The present invention is not limited to the embodiments described below, and various modifications can be made without departing from the spirit and scope of the invention.

Embodiment 1

First, a first embodiment of the present invention will be described with reference to Figs. 1 to 7 . Fig. 1 is a perspective view showing an air cleaner according to a first embodiment of the present invention. In addition, Fig. 2 is a longitudinal sectional view of the air cleaner in Fig. 1 . As shown in these figures, in the present embodiment, the air cleaner 1 of the floor-mounted type is configured. The air cleaner 1 includes: Housing 2, base 3, suction port 4, air outlet 5, air blowing device 6, air path 7A, 7B, cleaning device 8, movable grid 9, grid drive unit 10, opening variable mechanism 11, opening drive The portion 12, the rectifying mechanism 13, the rectifying drive unit 14, the horizontal turning mechanism 15, and the like.

The casing 2 is formed in a rectangular shape of, for example, a substantially square shape, and is supported by a base 3 provided on the floor of the room to be rotatable in a horizontal direction. As shown in Fig. 2, in the internal space of the casing 2, in the space from the suction port 4 to the air outlet 5, the cleaning device 8, the air blowing device 6, and the air path 7 are disposed in order from the upstream to the downstream. In the following description, among the side surface portions of the casing 2, a portion mainly disposed to face the indoor space is referred to as a front portion, and a portion facing the front portion is referred to as a rear portion. In addition, the direction of the front side of the casing 2 is described as the front side, and both sides of the casing 2 in the horizontal direction as viewed from the front are described as the left-right direction, and the vertical direction is described as the vertical direction depending on the case. The air cleaner 1 is installed, for example, at a position close to any one of the wall surfaces of the room, and is used in a state where the rear surface of the casing 2 faces the wall surface and the front portion of the casing 2 faces the indoor space.

The suction port 4 is an opening for sucking indoor air into the inside of the casing 2, and is provided, for example, at a front surface portion of the casing 2. The air outlet 5 is an opening for blowing air that has entered the inside of the casing 2 to the outside, and is constituted by, for example, two air outlets 5A and 5B that are opened to the upper surface portion of the casing 2. The two air outlets 5A and 5B extend side by side along the left and right sides of the casing 2. In the following description, when the air outlets 5A and 5B are not particularly distinguished, they may be described as "the air outlet 5". Further, the air blown out from the air outlet 5 may be described as "blowing air". Further, in Fig. 2, the wind direction vector 50 at the maximum wind speed at which the air is blown is shown. Wind direction vector 50 vertical direction vector 50a, front and rear direction vector 50b, and left and right direction vector 50c not shown in the figure are combined. In the case of Fig. 2, the blown air of the air outlets 5A and 5B is combined. Therefore, although the wind direction vector 50 is shown as one, the wind direction vectors 50 exist in the air outlets 5A and 5B, respectively. Further, in the present invention, the suction port 4 may be disposed on the back surface portion, the side surface portion, the lower surface portion, or the like of the casing 2, or the air outlet 5 may be disposed in the front surface portion, the side surface portion, or the like of the casing 2. Further, in the casing 2, only one air outlet 5 may be disposed, or three or more air outlets 5 may be disposed. That is, the position or the number of the air outlets 5 is not limited to the first embodiment.

The air blowing device 6 is a device that sucks air from the suction port 4 into the casing 2 and blows the air out of the air outlet 5, and includes a fan 6A as a device body portion and an electric motor 6B that rotates the fan 6A. The number of revolutions of the fan 6A is controlled by the control unit 23. The amount of air blown out of the air changes corresponding to the number of revolutions. As shown in FIG. 2, for example, in the inside of the casing 2, for example, two air blowing devices 6 are arranged side by side in the vertical direction in a state in which the positions in the front-rear direction are shifted.

Further, inside the casing 2, an air passage 7 is provided which is connected to the air blowing device 6 and the air outlet 5, and guides the air blown from the air blowing device 6 to the air outlet 5. The air passage 7 is partitioned between the air passage 7A on the front side and the air passage 7B on the back side by the partition wall 2A provided in the casing 2. The two air passages 7A and 7B are arranged to extend in the vertical direction inside the casing 2, for example, in the front-rear direction when viewed from a horizontal cross section.

The lower sides of the air passages 7A, 7B are respectively connected to different air blowing devices 6, and the upper sides of the air passages 7A, 7B are connected to the air outlets 5A, 5B, respectively. In other words, the air cleaner 1 includes the first air blowing system that has passed through the air path 7A from one of the air blowing devices 6 and reaches the air outlet 5A, and the second air blowing system that has passed through the air path 7B from the other air blowing device 6 to reach the air outlet 5B. Air supply system, in these air supply systems, can Do not control its air volume, wind direction and wind speed.

As described above, in the first embodiment, the partition wall 2A is disposed inside the casing 2, and the two air passages 7A and 7B are formed in parallel in the front-rear direction. Further, among the two air blowing devices 6, at least one of the air blowing devices 6 located on the upper side in the second drawing is constituted by a motor built-in air blowing device in which a part of the motor 6B is buried inside the fan 6A. Thereby, two air blowing systems are efficiently formed in the inside of the casing 2, and the installation area of the air cleaner 1 can be reduced, and the air cleaner 1 of a small size and high performance can be implement|achieved.

The cleaning device 8 is a device for purifying the air passing through the inside of the casing 2, and is provided between, for example, the suction port 4 and the air blowing device 6. Here, the term "clear purification" means to remove pollutants such as dust, smoke, pollen, viruses, bacteria, molds, allergens, and odor molecules floating in the air, specifically, It means the action of trapping these pollutants so that they do not activate, adsorb and decompose. The cleaning and purifying device 8 of the present embodiment is a device that can perform such a cleaning and purifying program, and can be composed of the following machines or a combination of the following machines: a dust collecting filter that collects dust in the air, and traps odor molecules in the air. A deodorizing filter, a voltage applying device that generates a high electric field or a discharge product between electrodes to remove contaminants, and the like. In addition, in FIG. 4, a voltage application device is assumed, and it is shown that the cleaning device 8 is electrically connected to and controlled by the control device 23. However, the cleaning device 8 is generally constituted by a member that cannot be electrically controlled such as a deodorizing filter or a dust collecting filter, and the cleaning device 8 is not necessarily electrically connected to the control device 23, and the cleaning device 8 is not limited to being Controlled by control device 23. The present specification is not limited to a device in which the cleaning device 8 is electrically controlled, and is not limited to being controlled by the control device 23. Basically, as long as there is a hand to capture, not activate, decompose, etc. The function of purifying any substance that pollutes the air is the scope of the purification device 8.

The dirt detecting device 20 that detects the amount of the pollutants in the inside of the suction casing 2 is provided on the upstream side of the cleaning device 8 in the air flow direction. The contamination detecting device 20 is composed of a detector described later or a composite detector composed of a detector to be described later, such as a dust detector, a gas detector, an air velocity detector, and the like. The dirt detecting device 20 detects the amount of the pollutants in the air which is blown out by the air cleaner 1 in a specific direction and returns from the direction, thereby detecting the degree of contamination of the air in a specific direction. . Further, in the present embodiment, the contamination detecting device 20 constitutes a specific example of the contamination level information detecting device that detects the information as the index of the degree of contamination.

Fig. 3 is an enlarged view of an essential part in the first diagram showing the operating states (a) and (b) of the movable grid and the rectifying mechanism. As shown in FIGS. 2 and 3, the movable grille 9 is a device that oscillates the wind direction of the blown air in the vertical direction, and one movable grille 9 is provided in each of the air outlets 5A, 5B of the casing 2. In detail, the movable grid 9 is formed of, for example, an elongated flat plate or the like extending in the left-right direction of the casing 2. Further, the base end side of the movable grid plate 9 is attached to each of the air outlets 5A and 5B through the grid drive unit 10 provided in the air outlets 5A and 5B, and the tip end side of the movable grid 9 can be driven by the grid. 10 and swing in the up and down direction. Further, the two movable grids 9 are configured to individually change the wind direction in which air is blown from the respective outlets 5A and 5B. Further, in the present embodiment, the case where two movable grids 9 are provided is exemplified, but the present invention may be configured such that only one movable grid 9 or three are provided corresponding to the number of the outlets 5 The above movable grid 9.

The movable grid 9 is blown out by swinging in the up and down direction The wind direction oscillates in the up and down direction between the front and the top corresponding to the swing angle. The elevation angle of the wind direction is changed to almost the same angle as the elevation angle of the movable grid 9. In addition, in this specification, the "elevation angle" means an angle which is inclined upwards with respect to the horizontal direction parallel to the ground. That is, the elevation angle = 0° means that the horizontal direction and the elevation angle = 90° indicate directly above the vertical direction.

The grid drive unit 10 has a support shaft that rotatably supports the movable grid plate 9, and an actuator that rotates the support shaft (not shown). The movable grid plate 9 and the grid drive unit 10 constitute a specific example of the wind direction variable mechanism, which is capable of changing the wind direction of the blown air in the vertical direction. As shown in Fig. 2, the opening variable mechanism 11 is provided in such a position as to face the movable grid 9 in the front-rear direction, and the movable grid 9 cooperates to change the opening area of the air outlet 5A. In addition, in the first and third figures, in order to clearly show the rectifying mechanism 13 to be described later, the illustration of the opening variable mechanism 11 is omitted. In addition, in the second drawing, the case where the opening variable mechanism 11 is disposed only in one of the air outlets 5A is exemplified, but the present invention is not limited thereto, and the opening variable mechanism 11 may be disposed only in the other. One of the air outlets 5B or one of the air outlets 5A and 5B is provided.

The opening variable mechanism 11 is formed of, for example, an elongated flat plate or the like that extends in the left-right direction of the casing 2. Further, the proximal end side of the opening variable mechanism 11 is attached to the air outlet 5A through the opening driving portion 12 having substantially the same configuration as the grid driving portion 10. The tip end side of the opening variable mechanism 11 can be swung in the front-rear direction by the opening driving portion 12 to change position so as to be close to and away from the movable grid 9. Thereby, the opening variable mechanism 11 can increase or decrease the opening area of the air outlet 5A, and can change the wind speed of the air corresponding to the opening area. That is, the opening variable mechanism 11 and the opening driving portion 12 constitute a supply air change that can change the wind speed of the blown air. Specific examples of means. Further, the opening variable mechanism 11 may be disposed in either or both of the air passages 7A and 7B without being disposed in the air outlet 5 as a mechanism for adjusting the opening area (that is, the flow path area) of the air passage 7.

The rectifying mechanism 13 is a device that adjusts the wind direction in the left-right direction while maintaining the elevation angle of the wind set by the movable grille 9. As shown in the second and third figures, the rectifying mechanism 13 is formed, for example, in a substantially triangular shape (or a fan shape), and protrudes from the wind receiving surface side of each movable grille 9 and is disposed at intervals in the left-right direction. A rectifying mechanism 13. Further, as shown in FIGS. 3(a) and 3(b), each of the rectifying mechanisms 13 is swung in the left-right direction so that the wind direction of the blown air changes in the left-right direction corresponding to the swing angle.

Further, the swing operation of the rectifying mechanism 13 can be performed, for example, by the rectifying drive unit 14 (shown only in Fig. 4) provided on the movable grid 9. In other words, the rectifying mechanism 13 and the rectifying drive unit 14 constitute a specific example of a variable direction mechanism that can change the wind direction of the blown air in the left-right direction. Further, in the present invention, it is not necessary to provide the rectifying mechanism 13. In addition, for example, only one rectifying mechanism 13 may be disposed on each of the right and left end sides of the movable grille plate 9.

As shown in FIGS. 1 and 2, the horizontal turning mechanism 15 is a device that is provided between the casing 2 and the susceptor 3 to rotate the casing 2 on the susceptor 3 at least in the left-right direction. Since the direction of the air outlet 5 is changed in the horizontal direction together with the casing 2, the horizontal turning mechanism 15 constitutes a specific example of a variable direction mechanism that can change the wind direction of the blown air in the left-right direction. Further, similarly, the direction of the suction port 4 is also changed in the horizontal direction together with the casing 2. Therefore, the horizontal turning mechanism 15 constitutes a specific example of the suction port horizontal turning mechanism that rotates the suction port 4 in the horizontal direction. Further, as described above, in the first embodiment, the two fans are juxtaposed in the vertical direction. The configuration is such that it is easier to form a square or a circle than a device driven by a fan with the same air volume, so that the installation area is miniaturized. In particular, the square or the circular shape also makes the installation area necessary for the turning operation in the horizontal direction small, so that the horizontal swing mechanism 15 is optimally operated. As a result, even if the horizontal swing mechanism 15 is provided, it can be easily installed between furniture and the like, and the user can freely arrange in accordance with the situation of the room, thereby realizing a configuration having versatility.

Further, a detecting device 21 is provided on the upper front side of the casing 2. The person detecting device 21 has a function of detecting a person detecting device of a person who is indoors. The human detecting device 21 includes an infrared ray detector 40 that detects a person using infrared rays to detect a person, and a detector operating portion 44 that causes the infrared ray detector 40 to face in a direction relative to the shell. The detector horizontal swing mechanism that is rotated in the horizontal direction of the body 2 (that is, on both sides in the left and right direction). In addition, the details of the person detecting device 21 will be described later.

(Control System)

Next, the control system of the air cleaner 1 will be described with reference to Fig. 4 and the like. Fig. 4 is a view showing the configuration of a control system of the air cleaner according to the first embodiment of the present invention. The air cleaner 1 includes a detection system including an infrared detector 40 and a contamination detecting device 20, an operation unit 22 for operating the air cleaner 1, and a control device 23 for controlling an operation state of the air cleaner 1.

On the other hand, the operation unit 22 is a device that is operated when the user of the air cleaner 1 performs various settings and operation switching, and includes: a power switch for starting and stopping the air cleaner 1, and a display air cleaner. The display unit of the operating state of 1. In addition, the operation unit 22 and the control device 23 are connected to each other to perform dual The state of communication.

The control device 23 is a device that controls the operating state of the air cleaner 1, and includes a calculation processing device, an input port, a memory circuit, and the like, which are not shown. As shown in Fig. 4, the sensing system including the infrared ray detector 40 and the contamination detecting device 20 is connected to the input side of the control device 23. An actuator including the air blowing device 6, the cleaning device 8, the grid driving portion 10, the opening driving portion 12, the rectifying driving portion 14, the horizontal turning mechanism 15, the detector operating portion 44, and the like is connected to the output side of the control device 23. . Further, the control device 23 drives the actuator in accordance with the output of the sensing system, thereby causing the air cleaner 1 to operate.

Next, the basic operation of the air cleaner 1 will be described. When the air cleaner 1 is operated, the control device 23 drives the air blowing device 6 and the cleaning device 8. Thereby, air is sucked into the inside of the casing 2 from the suction port 4, and the air is purified by the cleaning device 8. Then, the cleaned air reaches the air outlets 5A and 5B via the air blowing device 6 and the air passages 7A and 7B, and is blown to the outside from the air outlets 5A and 5B. At this time, the control device 23 of the air cleaner 1 of the present embodiment performs the detection control of the direction of the person in the room and the height of the person by the person detecting device 21, and performs the wind direction control to drive the movable grid. The plate 9, the opening variable mechanism 11, the rectifying mechanism 13, the horizontal turning mechanism 15, and the like are configured to blow air to the area on the head of the person to be detected. Hereinafter, the configuration of the person detecting device 21, the person detection control, and the wind direction control will be described in order.

(Composition of human detection device)

Next, the configuration of the person detecting device 21 will be described with reference to FIGS. 5 to 7. Fig. 5 is a cross-sectional view showing the structure of the infrared detector. Fig. 6 is a perspective view showing the arrangement of the light receiving elements of the infrared detector and the viewing angle of the light distribution. Figure 7 shows An explanatory diagram including the turning operations (a), (b), and (c) of the infrared detector external detecting device is shown. As described above, the person detecting device 21 includes the infrared ray detector 40 and the detector operating unit 44. The infrared ray detector 40 detects infrared rays generated from the detection target, and has a multi-element light-receiving unit 41 composed of a plurality of light-receiving elements 41a to 41h and a collecting lens 42 as shown in FIG. In addition, in the fifth drawing, the case where the multi-element light receiving unit 41 is constituted by the eight light receiving elements 41a to 41h is exemplified. However, in the present invention, the number of light receiving elements is not limited to eight, and the multi-element light receiving unit 41 may be composed of seven or less or nine or more arbitrary number of light receiving elements.

Each of the light-receiving elements 41a to 41h is a detection element that can individually perform infrared light reception and human detection, and is arranged, for example, in a straight line in the vertical direction. Thereby, the infrared ray detector 40 has a function of distinguishing and detecting eight regions in which the indoor temperature heights are different from each other. The collecting lens 42 is a device that efficiently collects infrared light into the multi-element light receiving unit 41, and is configured by, for example, a convex lens. The collecting lens 42 can be disposed in the upper portion of the multi-element light receiving unit 41 in the Z direction. The infrared ray detector 40 detects the temperature of the detected object by the respective light receiving elements 41a to 41h, and outputs a signal corresponding to, for example, indoor thermal image data.

Fig. 6 is a perspective view showing the arrangement of the light receiving elements of the infrared detector and the viewing angle of the light distribution. As shown in the figure, the light distribution viewing angles 43a to 43h of the respective light receiving elements 41a to 41h are set to quadrangular regions having the same size. In addition, the light distribution viewing angles 43a (43b to 43h) of one light receiving element 41a (may be 41b to 41h) are set such that the vertical viewing angle of the vertical direction is, for example, 7°, and is set to the horizontal direction. The viewing angle of the light distribution is 8°.

The total light distribution viewing angle 43 synthesized by the light distribution viewing angles 43a to 43h The area is elongated in the vertical direction, and has an upper limit of the viewing angle 43max which is the upper limit of the light distribution viewing angle 43 and a lower limit of the viewing angle of 43 min which is the lower limit of the light distribution viewing angle 43. Further, in the present invention, the light distribution viewing angles 43a to 43h are not necessarily the same shape and the same size, and the specific values of the vertical light distribution angle and the horizontal distribution light viewing angle are not limited to the above-described examples.

The detector operation unit 44 is configured to be capable of rotating the direction of the infrared ray detector 40 in the horizontal direction with respect to the casing 2. The detector operation unit 44 uses, for example, a stepping motor that can accurately adjust the swing driving angle of the infrared detector 40, and is configured to be controllable independently of the operation of the horizontal swing mechanism 15. Fig. 7 is an explanatory view showing a turning operation of the infrared detector of the detector operating portion, wherein (a) shows a case where the right end portion is rotationally driven, (b) a case where the center portion is rotationally driven, and (c) a left end. The case of the partial slewing drive. As shown in the figure, the human detecting device 21 first drives the direction (detection direction) of the infrared detector 40 in the left-right direction by the detector operating unit 44. More specifically, the direction of the infrared ray detector 40 is rotationally driven from the right end portion shown in (a) of FIG. 7 to the left end portion shown by (c) through the center portion shown in (b). . Further, when it reaches the left end portion shown in (c), the rotation direction is reversed, and the left end portion shown in (c) is returned to the right end portion shown by (a) via the center portion shown in (b). . The human detecting device 21 repeats the above-described operation, thereby scanning the temperature detection target range in the room in the left-right direction and sequentially detecting the temperature thereof.

(person checkout control)

Next, the person detection control executed by the control device 23 will be described. The control device 23 obtains the thermal image data of the wall or the ground in the room by the human detecting device 21, and performs the detection of the person indoors indoors based on the thermal image data. In detail, the first First, the control unit 23 causes the detector operating unit 44 to move in the left-right direction at a predetermined movable angle (here set to 1.6°). Thereby, the infrared detector 40 is driven at a rotation of 1.6°. Next, the infrared detector 40 is stopped according to a preset standby time (for example, 0.1 to 0.2 seconds). Then, in this case, the thermal image data is detected by the eight light receiving elements 41a to 41h of the infrared ray detector 40, and is input to the control device 23. After the waiting time has elapsed, the control device 23 again moves the detector operating unit 44 to the movable angle (1.6°) in the left-right direction. Then, the thermal image data is input to the control device 23 by the same operation as described above. Such processing is performed at 94 positions at a movable angle of 1.6°. In this case, the movable range of the infrared detector 40 in the left-right direction (that is, the angular range of the slewing drive in the left-right direction) is about 150.4.

According to the configuration of the human detecting device 21 as described above, the thermal image data is compared at each time in the movable range of the infrared detector 40 in the left-right direction, whereby the direction and height of the person appearing in the indoor space can be detected. Further, according to the human detecting device 21 of the present embodiment, the thermal image data of the respective light distribution viewing angles 43a to 43h are obtained by the eight light receiving elements 41a to 41h of the infrared ray detector 40, depending on which one is matched. The presence of a person is detected in the area of the light viewing angle to more accurately detect the height of the human body. Further, since the control device 23 independently controls the operations of the detector operating unit 44 and the horizontal turning mechanism 15, the direction of the infrared detector 40 in the horizontal direction can be rotationally driven without affecting the wind direction control to be described later.

Further, the human detecting device 21 is not necessarily constituted by the infrared ray detector 40, and may be any detector that can detect the direction of the person in the room and its height, and may be constituted by the following machines or by the following machines and Infrared detector 40 is combined: dirt detector, dynamic detector, distance detector, humidity inspection Detector, or illuminance detector, etc.

The stain detector (dust detector) is composed of a semiconductor element, an optical element, or the like, and detects the concentration of dust, smoke, pollen, and the like in the air. The distance detector is composed of a non-contact type detector such as an ultrasonic detector, a photodetector, or a video recognition detector, and detects the distance between the air cleaner 1 and the detected object by using sound waves or electromagnetic waves. The detected object includes indoor walls, ceilings, furniture, people, animals, and the like. The illuminance detector detects whether there are people and animals in the room, and whether there is any action or the like based on the change in illuminance. In addition, the output of the humidity detector is used to correspond to the humidity to correct the sensitivity of each of the above detectors. Further, the combination of the above detectors is only an example, and the present invention is not limited to the human detecting device in which the respective detectors are combined.

(wind direction control)

Next, the wind direction control performed by the control device 23 will be described. The control device 23 performs wind direction control when it is determined that there is a person in the room based on the thermal image data acquired by the infrared detector 40 of the person detecting device 21. In the wind direction control, first, the rotation angle θ1 in the horizontal direction necessary for the front portion of the air cleaner 1 to face the person is calculated. Next, the control unit 23 rotates the casing 2 by the horizontal rotation mechanism 15 in accordance with the rotation angle θ1. Thereby, the air outlet 5 is in a state of facing the direction of a person in the horizontal direction. Further, at least the front-rear direction vector 50b among the wind direction vectors 50 is in a state of facing the direction of the person.

In the subsequent processing, the elevation angle θ2 of the movable grid 9 in the vertical direction (that is, the elevation angle θ2 of the wind direction) is set such that the wind direction is directed to the air blowing region above the height of the person. Here, for example, in the case where the light receiving elements 41f to 41h detect a person among the light receiving elements 41a to 41h, the portions of the light receiving elements 41a to 41e are used. The minute is used as the air supply area. Next, the elevation angle θ2 of the movable grid 9 which can blow the air to the air blowing area is calculated, and the movable grid 9 is driven. Thereby, the wind is blown to the air of the person inside the room. That is, the vertical direction vector 50a of the wind direction vector 50 is set so as not to face the person, and the wind direction vector 50 which is the sum of the vector components 50a, 50b, and 50c does not face the direction of the person. In addition, the vertical direction vector 50a is moved here while the front-back direction vector 50b is oriented in the direction of the person such that the sum of the wind direction vectors 50 does not face the person, but the left-right direction vector 50c may be changed, or both 50a and 50c may be changed. . That is, the point is that even if the front-back direction vector 50b is the direction toward the person, the wind direction vector 50 does not face the direction of the person.

The elevation angle θ2 of the movable grid plate 9 can be used by using the number of light-receiving elements of the human body (the number of human detecting elements N) among the light-receiving elements 41a to 41h, and the angle of the airflow when the air is blown by the air volume Q and the wind speed V. Among Δθ2, the lower side spread angle Δθ2 _- (Q, V) and the inclination angle θ3 which lowers the view angle lower limit 43min from the horizontal downward direction are determined according to the formula (1).

Θ2≧7×N-θ3+Δθ2 _- (Q,V)...(1)

Further, in the above-described wind direction control, the elevation angle θ2 of the movable grid plate 9 may be a value (fixed value) on the right side of the above formula (1), or may be in a range equal to or larger than the value on the right side of the above formula (1). The medium variation causes the movable grid 9 to sway in the air supply area.

Further, while the wind direction is being controlled to blow air to the air blowing area above the person, the control device 23 uses the soil detecting device 20 to continuously detect the degree of contamination of the air taken in from the suction port 4. Further, the control device 23 determines whether or not the detected degree of contamination is below the threshold. Here, the threshold uses a preset value which is a threshold value indicating the degree of soiling of the fact that the air has been cleaned. its As a result, when it is determined that the detected degree of contamination is below the threshold value, it can be determined that the air in the region of the current wind direction has been sufficiently cleaned, so that the wind direction control of the wind direction is ended. Next, the control device 23 determines whether or not there is a person who is different from the person to whom the current air is directed, by the above-described person detection control. As a result, when it is determined that there is a person who has a condition different from the previous time in the room, the wind direction control is performed on the person with the different condition. Thereby, it is possible to sequentially supply air to the person in the room.

On the other hand, when it is determined that there is no other person in the room, the air blowing is continued while the horizontal turning mechanism 15 is driven to change the wind direction of the blown air, and the dirt detecting device 20 confirms whether or not there is a wind direction in which the degree of contamination larger than the threshold is detected. . As a result, when there is a wind direction in which the degree of contamination is greater than the threshold value, the second wind direction control is performed, and air blowing is performed in a key manner toward the wind direction. On the other hand, when the wind direction of the dirtiness level larger than the threshold value is not detected, the horizontal swing mechanism 15 of the air cleaner 1 is returned to the initial position and the operation for reducing the air volume is performed. By performing such control, even if there is no person indoors, it is possible to cleanly clean the air in a region with a large degree of soiling.

However, in the above-described wind direction control, the direction of the person in the room and the height of the person detected by the person detection control are adjusted to adjust the wind direction, and it is also considered that the person in the room moves indoors. Therefore, the person detection control is continuously operated, and the movement of the person in the room is continuously monitored, and when the person in the room moves, the air supply area controlled by the wind direction is changed accordingly. In addition, when the number of people in the room increases on the way, the dirt detecting device 20 detects the degree of soiling when the air is blown in the direction of each person, and starts from the direction of the person with a large degree of contamination detected. It is better to carry out the air supply. In addition, when multiple people gather together, they can be regarded as human areas, between people and people. Air is supplied to clean the entire area together. In other words, it is possible to measure the range of the airflow that can be cleaned by the blown wind in advance, thereby determining the airflow condition corresponding to the sense of distance between the person and the person, thereby reducing the number of operations of the horizontal swing, and reducing waste and efficiency. The air is clean. Thereby, when the person in the room moves, or when the number of people in the room increases, it is possible to efficiently purify the air around the person without causing an unpleasant feeling to the person in the room.

As described above, according to the air cleaner of the present embodiment, the clean air blown from the air outlet 5 can be blown directly to the person and blown in the direction of the person. At this time, since the blown air is high speed, an induced airflow from the region where the person is present to the suction port 4 of the air cleaner 1 occurs. In addition, since the blown air is cleaned air, airflow due to the concentration gradient around it is also generated. Thereby, it is possible to suppress the feeling of being blown to the person while effectively sucking the dust of the area where the person is located to the suction port 4 to preferentially purify the surroundings of the person.

Further, in the air cleaner of the present embodiment, in the wind direction control, the horizontal direction of the wind direction is adjusted by the horizontal turning mechanism 15, and the wind direction in the vertical direction is adjusted by the movable grid 9. Thereby, the wind direction control can be accurately performed, and the same effect can be stably and continuously provided to the person in the room.

Further, in the wind direction control, the wind direction is adjusted in the left-right direction by the rectifying mechanism 13. However, it is difficult for the wind direction adjustment by the rectifying mechanism 13 to accurately blow the air directly above the person, and the horizontal direction is likely to be deviated. Further, the wind direction of the rectifying mechanism 13 is adjusted, and the pressure loss to the right and left ends is large. However, the control responsiveness of the rectifying mechanism 13 is superior to that of the horizontal slewing mechanism 15. Therefore, in the wind direction control in the left-right direction, the actions of the respective mechanisms can be appropriately combined in consideration of the advantages of these mechanisms.

Further, according to the air cleaner of the present embodiment, the rectifying mechanism 13 can be caused to flow in the left and right directions in the left and right directions in the room. Thereby, when a plurality of people are indoors and the area where the person is located is large, the wind can be widely supplied to the head.

Further, according to the air cleaner of the present embodiment, the person detection control and the wind direction control configured as the person detecting device 21 are individual operations. Therefore, it is possible to detect a person in a wide range without changing the wind direction. In addition, since the person can be continuously monitored during the execution of the wind direction control, it is possible to flexibly respond to the movement of the person.

Further, in the detection control of the person detecting device 21, the detector operating unit 44 can rotatably drive the casing 2 of the horizontal turning mechanism 15 in combination with the infrared detector 40. By this operation, the infrared ray detector 40 can be moved on both axes, and images of the same position can be obtained from different directions. In this way, not only the direction of the person in the room and the height information thereof but also the position information can be obtained, and the accuracy of the wind direction control can be further improved.

Further, in the air cleaner of the present embodiment, since the suction port 4 is disposed in front of the casing 2, the horizontal swing mechanism 15 can adjust the wind direction to the direction of the person while the suction port 4 faces the person. Thereby, it is easy to form a human-centered airflow, that is, an airflow that is blown from the air outlet 5 and passes through the head of the person, passes through the back surface, and passes over the foot surface and is sucked into the suction port 4, so that it can efficiently attract people around. Dust.

Further, in the air cleaner of the present embodiment, the suction port 4 is disposed on the front surface of the casing 2, but the suction port 4 is disposed on the front surface of the casing 2. Therefore, in such a state, the operation of the rectifying mechanism 13 can be combined with the operation of the horizontal turning mechanism 15 to perform the wind direction control. In detail, control is by The horizontal turning mechanism 15 faces the suction port 4 in the direction in which the person is located, and the rectifying mechanism 13 causes the wind direction to face the direction in which the person is located in the left-right direction. Thereby, even if the suction port 4 is not disposed in front of the casing 2, the human-centered airflow can be efficiently generated.

Further, in the air cleaner of the present embodiment, the dirt detection device 20 is configured to detect the degree of contamination of the intake air. If it is cleaned around the person in the room, but there is another source of contamination, it cannot be considered that the room has been cleaned. In addition, when a person is moving, the comfort cannot be maintained without first purifying the moving destination. The interlocking of the soil detecting device 20 and the person detecting device 21 is a method for solving this problem, and by this operation, it is possible to maintain comfort in the moving destination of a person. That is, it is necessary to first detect the person and purify the person's surroundings, and when the cleanness of the person's surroundings is improved to be better than the predetermined state, control is performed so as to also face the direction of no one, corresponding to the soil detecting device 20. The value purifies the entire space other than the person.

However, for example, when a person sits in a chair or the like, the person detecting device 21 cannot detect the foot. Further, for example, when the body is covered by the furniture, the person detecting device 21 may be mistakenly judged as no one. When a erroneous detection of the person detecting device 21 as described above occurs, the desired wind direction control may not be performed, and the air cleaning operation may not be performed efficiently. Therefore, in the air cleaner of the first embodiment, it is also possible to provide a device that inputs indoor information about a compartment or an obstacle of a home. Specifically, an indoor information acquisition device that inputs indoor information such as the position of furniture, a window or a door, or a room size in advance, and corrects the wind direction in the wind direction control using the input information.

Further, the indoor information acquisition device is not limited to a form in which data is directly input, and may be, for example, a combination of an ultrasonic detector and a human detection device. Set to 21 to detect the composition of the compartment information. In addition, it is also possible to obtain the compartment information by these external devices by communication with an external device such as a smartphone or a personal computer by a known communication means. In addition, the communication means also includes receiving detection information, action information, and location information from other products. Thereby, it is possible to obtain, for example, the person information obtained from the high position of the air conditioner, and to find out the motion of the person covered by the furniture. In addition, it is possible to obtain motion information or position information of a refrigerator, a vacuum cleaner, a microwave oven, or a television, and to grasp a heat source other than a person in advance to prevent false detection.

6‧‧‧Air supply device

8‧‧‧Clean purification device

10‧‧‧ grid drive unit (variable wind direction mechanism)

12‧‧‧Open drive department

14‧‧‧Rectification drive unit (variable wind direction mechanism)

15‧‧‧ horizontal slewing mechanism (variable wind direction mechanism)

20‧‧‧Stain detection device (dirty level information detection device)

22‧‧‧Operation Department

23‧‧‧Control device

40‧‧‧Infrared detector

44‧‧‧Detector action unit (detector action mechanism)

Claims (10)

An air cleaner comprising: a housing having a suction port for drawing in air in the chamber and an air outlet for blowing the air; and a blowing device that draws air from the suction port into the interior of the housing and blows the air from the air The outlet purging device cleans the air flowing inside the casing; the variable direction mechanism has a function of changing the wind direction of the blown air blown from the outlet; the human detecting device detects the person a direction or a direction in which a person is estimated by the detected value; a control device that controls the air blowing device and the variable direction mechanism; the wind direction variable mechanism includes: a horizontal turning mechanism that rotates the air outlet in a slightly horizontal direction; And a movable grid such that a wind direction of the blown air blown from the air outlet can be changed in an up and down direction; the control device has a wind direction control function that is controlled such that when the person detecting device detects a person indoors, The front-rear direction component of the wind direction vector at the maximum wind speed of the wind direction is oriented toward the direction of the person, and the total vector direction of the omnidirectional component of the wind direction vector is not oriented Direction. The air purifier according to claim 1, wherein: the person detecting device has a function of matching a person's direction to detect or estimate a height of the person; and the control device controls to be variable by the wind direction Institution, making it blow out The air is blown above the height of the person detected by the person detecting device. The air purifier according to claim 1 or 2, wherein the person detecting device comprises: a human detection detector that detects a direction of a person and a height of the person; and a detector action mechanism that changes the The person detects the direction of the detector; wherein the control device controls the detector action mechanism in a manner independent of the wind direction variable mechanism. The air cleaner according to claim 3, wherein the person detecting device includes a plurality of detecting elements arranged in parallel in the vertical direction, and is a detecting element capable of individually detecting a person, and the detector operating mechanism Perform a horizontal swivel action. The air purifying machine of claim 1, wherein the horizontal swinging mechanism further has a function of rotating the air outlet together with the air inlet in a horizontal direction; the control device is detected by the person detecting device When the person is indoors, the horizontal swing mechanism is controlled such that the suction port faces the direction of the person in the horizontal direction. The air cleaner according to claim 5, comprising a dirtiness information detecting device that detects information as an indicator of the degree of soiling of the air taken in from the suction port; the control device When the wind direction control function is being executed, when the degree of soiling is below the threshold value, the wind direction control function is ended. The air cleaner according to claim 6, wherein the control device detects the front and back phase when the wind direction control function ends. The wind direction control function is executed based on the detected direction of the person and the height of the person when the direction of the person of the different condition and the height of the person are different. The air purifier according to claim 6, wherein the control device, when the wind direction control function ends, rotates the direction of the suction port in a horizontal direction and detects the degree of contamination, when the detection is greater than a threshold At the time of the degree of soiling, the wind direction is controlled such that the wind direction is directed in the horizontal direction toward the suction port. An air cleaner according to claim 1 or 2, comprising an indoor information acquisition device that acquires indoor information about an indoor compartment or an obstacle, the control device controlling the air supply device and the wind direction based on the indoor information Variable mechanism. The air cleaner according to claim 9, wherein the indoor information acquisition device is configured to acquire the indoor information from an external device installed indoors.