TWI577943B - Air purifier - Google Patents

Description

Air purifier

The present invention relates to an air cleaner having a plurality of fans.

In the past, for example, Patent Document 1 discloses that in a fan filter device using a plurality of fans, the number of motor revolutions of each fan is controlled to suppress generation of vibration noise.

Advanced technical literature Patent literature

Patent Document 1: Japanese Laid-Open Patent Publication No. 2004-205095

In the above-described conventional air cleaner, the number of fan revolutions is controlled to suppress the vibration sound. However, if the number of fan revolutions is changed, the air volume and wind speed will also change. Therefore, if the number of revolutions of the fan is changed regardless of the air volume or the wind speed, the air supply around the person in the room to be air-conditioned is insufficient, and the air purification as the original purpose may be inefficient.

The present invention has been made to solve the above problems, and an object thereof is to provide an air cleaner capable of efficiently purifying ambient air of a person in a room while suppressing an operation sound.

An air cleaner according to the present invention includes a casing having a suction port for taking in air in the room, a first outlet and a second outlet for blowing the air, and a first air blower for drawing air from the suction port. The inside of the casing blows the air from the first outlet; the second air blowing device sucks air from the suction port into the casing, and blows the air from the second outlet; The air flowing inside the casing is cleaned; the wind direction variable mechanism can change the wind direction of the air blown from the first outlet and the second outlet; and the person detecting device detects the person inside the room; a control device that controls the first air blowing device, the second air blowing device, the air blowing device, and the wind direction variable mechanism; the control device has a wind direction control function that performs a wind direction when the person detecting device detects a person The number of revolutions in which the number of revolutions of the first air blower and the second air blower are set to the number of revolutions is controlled so that the wind direction is directed to the direction of the person.

According to the present invention, when a person indoors is detected, the wind direction is directed toward the direction in which the person is located, and the number of revolutions is set in the number of revolutions of the first air blowing device and the second air blowing device. Thereby, it is possible to provide an air cleaner capable of efficiently purifying the ambient air of the person in the room while suppressing the operation sound.

1‧‧‧Air Purifier

2‧‧‧Shell

2A‧‧‧ next door

3‧‧‧ pedestal

4‧‧‧Inhalation

5‧‧‧Blowing out

5A‧‧‧1st blowout

5B‧‧‧2nd blowout

6‧‧‧Air supply device

6A‧‧‧1st air supply unit

6B‧‧‧2nd air supply unit

61,61A,61A‧‧‧fan

62, 62A, 62B‧‧ ‧ motor

63, 63A, 63B‧‧‧ revolving number detector

7,7A, 7B‧‧‧ Wind Road

8‧‧‧Clean purification device

9,9A, 9B‧‧‧ movable grid (wind direction changing device)

10,10A, 10B‧‧‧ grid drive unit

11‧‧‧Open variable mechanism

12‧‧‧Open drive department

13,13A, 13B‧‧‧Rectifier (wind direction change device)

14‧‧‧Rectification drive department

15‧‧‧Horizontal swing mechanism (wind direction change device)

20‧‧‧Stain detection device

21‧‧‧person detection device

22‧‧‧Operation Department

23‧‧‧Control device

40‧‧‧erythroline detector

44‧‧‧Detector Action Department

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 a view showing the operation states (a) and (b) of the movable grid and the rectifying mechanism 1 is an enlarged view of the main part.

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 longitudinal sectional view showing an air cleaner according to a second embodiment of the present invention.

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 4 . 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, the air cleaner 1 of the present embodiment is configured as a floor-mounted air cleaner. The air cleaner 1 includes a casing 2, a susceptor 3, a suction port 4, a first air outlet 5A, a second air outlet 5B, a first air blower 6A, a second air blower 6B, air passages 7A and 7B, and a purge. The device 8, the movable grids 9A and 9B, the grid drive units 10A and 10B, the opening variable mechanism 11, the opening drive unit 12, the rectification mechanisms 13A and 13B, the rectification drive unit 14, the horizontal rotation mechanism 15, the control device 23, and the like. In addition, in the following description, the first air outlet 5A, the second air outlet 5B, the first air blower 6A, the second air blower 6B, the air passages 7A and 7B, the movable grids 9A and 9B, and the grid are not particularly distinguished. The plate drive units 10A and 10B and the rectification mechanisms 13A and 13B may be referred to as the air outlet 5, the air blower 6, the air passage 7, the movable grid 9, the grid drive unit 10, and the like. The rectifying mechanism 13.

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 in which the front surface of the casing 2 faces is described as the front side, and the direction corresponding to the left and right sides of the casing 2 viewed from the front is described as the left-right direction, and the vertical direction is described as the vertical direction depending on the situation. 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 portion of the casing 2 faces the wall surface and the front surface 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 first air outlets 5A and two second air outlets 5B that are opened to the upper surface portion of the casing 2. The two first air outlets 5A and the second air outlets 5B extend in parallel along the right and left sides of the casing 2. Further, the air blown out from the air outlet 5 may be described as "blowing air". 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, three or more air outlets 5 may be disposed.

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 is composed of two first air blowing devices 6A and 2 The air blowing device 6B is configured. Each of the first air blowing device 6A and the second air blowing device 6B includes fans 61A and 61B as main portions of the air blowing device, electric motors 62A and 62B that rotate the fans 61A and 61B, and detection of the number of revolutions of the motors 62A and 62B. The revolution number detectors 63A and 63B. The number of revolutions of the fans 61A and 61B is controlled by the control unit 23, and accordingly, the amount of air blown out is changed in accordance with the number of revolutions. As shown in FIG. 2, 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 where the position is shifted in the front-rear direction. At this time, the motors 62A and 62B of the first air blower 6A and the second air blower 6B are attached to the first support member and the second support member which are configured as individual members via the vibration-proof member (both not shown). . When the first air blowing device 6A and the second air blowing device 6B are driven, electromagnetic vibration is generated in the motors 62A and 62B, and the wind is generated in the fan casing due to the wind generated by the rotation of the fans 61A and 61B. According to the attachment structure of the first air blower 6A and the second air blower 6B, the individual vibration of the first air blower 6A and the second air blower 6B is suppressed by the vibration-proof member, and the first air blower 6A and the first air blower are restrained. The above-mentioned vibrations occurring in the air blowing device 6B are transmitted to each other.

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 the different air blowing devices 6, and the upper portions of the air passages 7A, 7B are connected to the first air outlets 5A and the second air outlets 5B, respectively. In other words, the air cleaner 1 includes a first air blowing system that reaches the first air outlet 5A from the air blowing device 6 through the air path 7A, and the air blowing system from the other side. The air device 6 passes through the air path 7B and reaches the second air blowing system of the second air outlet 5B. In these air blowing systems, the air volume, the wind direction, and the wind speed can be individually controlled.

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. In addition, among the two first air blowing devices 6A and the second air blowing device 6B, at least one of the upper first air blowing devices 6A in the second figure is embedded in the motor built-in inside the fan 61A. The air supply device is constructed. 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, for example, the removal of pollutants such as dust, smoke, pollen, viruses, molds, bacteria, allergens, and odor molecules floating in the air, specifically, It means the action of trapping, not activating, adsorbing and decomposing these pollutants. 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.

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. By the dirt detecting device 20, it is detected that the air is cleaned by the air cleaner 1 The amount of contaminant in the air that is blown out in a predetermined direction and returned from the direction, thereby detecting the degree of contamination of the air in a specific direction.

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 grids 9A and 9B are means for oscillating the wind direction of the blown air in the vertical direction, and are provided in the first air outlet 5A and the second air outlet of the casing 2, respectively. 5B. In detail, the movable grids 9A and 9B are formed by, for example, an elongated flat plate or the like extending in the left-right direction of the casing 2. Further, the base end sides of the movable grids 9A and 9B are attached to the first outlets 5A and the second outlets 5B through the grid drive units 10A and 10B provided in the first outlet 5A and the second outlet 5B, respectively. The tip end sides of the movable grid plates 9A and 9B are swingable in the vertical direction by the grid drive units 10A and 10B. In addition, the two movable grids 9A and 9B are configured to be able to individually change the wind direction (the first wind direction and the second wind direction) of the air blown from each of the first outlets 5A and the second outlets 5B. In the present embodiment, the case where the two movable grids 9A and 9B are provided is exemplified. However, the present invention may be configured to provide three or more movable grids 9 corresponding to the number of the outlets 5.

The movable grids 9A and 9B are swung in the vertical direction so that the wind direction of the blown air swings in the up and down direction between the front and the top in accordance with 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 units 10A and 10B have: a support shaft that rotatably supports the movable grids 9A and 9B, and an actuator that rotates the support shaft (not shown) Show). The movable grid plates 9A and 9B and the grid drive units 10A and 10B constitute a specific example of the wind direction variable mechanism, and the wind direction of the blown air can be changed in the vertical direction. As shown in Fig. 2, the opening variable mechanism 11 is a device that is disposed at a position facing the movable grid 9 in the front-rear direction and cooperates with the movable grid 9 to change the opening area of the first 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 figure, the case where the opening variable mechanism 11 is disposed only in the single first air outlet 5A is exemplified, but the present invention is not limited thereto, and the opening variable mechanism 11 may be disposed in another One of the first outlets 5B or the first outlet 5A and the second outlet 5B are 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 base end portion of the opening variable mechanism 11 is attached to the first air outlet 5A through the opening driving portion 12 having substantially the same configuration as the grid driving portion 10. The tip end portion 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 first air outlet 5A, and can change the wind speed of the air in accordance with the opening area. 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 13A (the first airflow variable mechanism) and the rectifying mechanism 13B (the second wind direction variable mechanism) are configured to maintain the airflow elevation angle set by the movable grille 9 from the first air outlet 5A and the first 2 The air outlet variable mechanism that blows out the air in the air outlet 5B independently adjusted in the left and right direction. As shown in Figures 2 and 3, The rectifying mechanisms 13A and 13B are formed, for example, in a substantially triangular shape (or a fan shape), and protrude from the wind receiving surface side of each movable grille 9, and a plurality of rectifying mechanisms 13 are disposed at intervals in the left-right direction. Further, as shown in FIGS. 3(a) and 3(b), each of the rectifying mechanisms 13A and 13B swings 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 swinging operation of the rectifying mechanisms 13A and 13B can be performed by, for example, 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.

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, 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 housing. The horizontal rotation direction of the detector (that is, the two sides in the left and right direction) is a horizontally oscillating mechanism for the rotation of the detector. 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. Further, the operation unit 22 and the control device 23 are connected to a state in which two-way communication is possible.

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 air blowing device 6 and the cleaning device 8 are first driven by the control device 23. Thereby, air is taken in from the suction port 4 of the casing 2, and the air is purified by the cleaning device 8. Then, the cleaned air reaches the first air outlet 5A and the second air outlet 5B via the air blowing device 6 and the air passages 7A and 7B, and is blown to the outside from the first air outlet 5A and the second air outlet 5B. At this time, the control device 23 of the air cleaner 1 of the present embodiment performs the detection control of the direction in which the person detecting device 21 detects the person in the room, and performs the wind direction control, and the driving is movable. The grid 9, the rectifying mechanism 13, the horizontal turning mechanism 15, the air blowing means 6, 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)

The person detecting device 21 includes an infrared ray detector 40 and a detector operating unit 44. The infrared ray detector 40 detects infrared rays generated from the object to be detected, and the number of the light receiving elements may be singular or plural.

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. The human detecting device 21 repeatedly performs an operation of rotating the direction (detection direction) of the infrared ray detector 40 in the left-right direction by the detector operation unit 44, thereby scanning the indoor temperature detection target range in the left-right direction. And check the temperature in sequence.

(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.

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 of the person appearing in the indoor space can be detected and Separate person or plural person.

Further, the human detecting device 21 is not necessarily constituted by the infrared ray detector 40, and is capable of detecting the direction of the person in the room and the height thereof. The apparatus may be composed of the following machines or a combination of the following machine and infrared detector 40: a dirt detector, a motion detector, a distance detector, a humidity detector, or an illuminance detector. Here, the contamination 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 an image 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. The illuminance detector detects the presence or absence of people and animals in the room and their actions based on changes 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. In the air cleaner of the present embodiment, a separate person or a plurality of individuals are detected in accordance with the person detecting device 21, and different wind direction control is executed. First, the wind direction control in the case where the person detecting device 21 detects a single person will be described. When the control device 23 determines that there is a separate person in the room based on the thermal image data acquired by the infrared detector 40 of the person detecting device 21, the wind direction control is performed in the direction in which the detected person is detected. In this 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. With this, The air outlet 5 is in a state of facing the direction of a person in the horizontal direction.

At this time, the air blowing device 6 controls so that the number of revolutions of the motors 62A and 62B detected by the number-of-revolution detectors 63A and 63B is the same number of revolutions. Thereby, the blown air is blown from the first outlet 5A and the second outlet 5B toward the person in the room.

Further, while the wind direction is being controlled to blow air to the air blowing area of the person, the control device 23 uses the dirt 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. As a result, when it is determined that the detected degree of contamination is equal to or less than the threshold value, it can be determined that the air in the region of the current wind direction has been sufficiently cleaned, and thus the wind direction control of the wind direction is ended. Next, the control device 23 determines whether or not another person exists. As a result, when it is determined that there is another person in the room, the wind direction control is performed for the other person as described above. Thereby, for example, when other people enter the room, it is possible to sequentially supply air to the other persons in the direction described above.

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 air direction control is performed, and air blowing is performed in an important 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, it is possible to focus on the dirt even if there is no one in the room. The air in a large area is cleaned.

However, in the above-described wind direction control, the direction of the person in the room detected by the person detection control is 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. Thereby, when the person in the room moves, it is possible to efficiently purify the air around the person without causing an unpleasant feeling to the person in the room.

Next, the wind direction control in the case where the person detecting device 21 detects a plurality of persons is explained. The control device 23 performs the wind direction toward the plural direction when it is determined that there are a plurality of persons (for example, the first person and the second person) in the room based on the thermal image data acquired by the infrared detector 40 of the person detecting device 21 control. In the wind direction control, first, the horizontal rotation angle θ1 of the air cleaner 1 and the rocking angles of the rectifying mechanisms 13A and 13B are calculated such that the horizontal direction of the air blown from the first outlet 5A is the direction of the first person. The horizontal direction of the air blown from the second air outlet 5B is the direction of the second person. Further, there may be a combination of a plurality of rotation angles θ1 and a rocking angle for realizing the wind direction as described above, and any combination may be employed. However, it is difficult to accurately wind the wind direction adjustment by the rectifying mechanisms 13A and 13B, and it is easy to cause the deviation in the left-right direction. Further, the wind directions of the rectifying mechanisms 13A and 13B are adjusted, and the pressure loss to the left and right ends is large. Therefore, in the wind direction control in the plural direction, these characteristics can be considered, and the rotation angle θ1 and the rocking angle which can accurately achieve the wind direction in the horizontal direction of the first person and the second person are appropriately employed. Next, the control device 23 rotates the casing 2 by the above-described turning angle θ1 by the horizontal turning mechanism 15, and causes the rectifying mechanisms 13A and 13B to operate at the calculated rocking angle. Thereby, the first air outlet 5A faces the first person in the horizontal direction. In the state of the direction, the second air outlet 5B is in a state of being oriented in the horizontal direction toward the direction in which the second person is located.

At this time, the number-of-turns control of the air blowing means 6 is performed so that the number of revolutions of the motors 62A and 62B detected by the number-of-revolutions detectors 63A and 63B differs. The above-described difference in the number of revolutions is set such that the sound caused by the combined wave of the wavelength or amplitude of the fluid sound generated by each of the first air blowing device 6A and the second air blowing device 6B falls in a frequency section which is hard to be heard by the human ear. For example, the difference in the number of revolutions is set such that the NZ sound determined by the number N of revolutions of the motor 62 and the number of blades Z of the fan 61 is a destructive wavelength. Thereby, it is possible to suppress the occurrence of disturbing vibration sounds caused by the air blowing device 6, and it is possible to clean the air without giving the user a sense of discomfort. Further, the above-described difference in the number of revolutions is not limited to the difference in the number of revolutions in which the NZ sound is the canceled wavelength, and the operation sound generated by the air blowing device 6 can be reduced.

Further, the difference in the number of revolutions is preferably set as follows: when the number of revolutions of the motors 62A and 62B is different from the number of revolutions, it is located farther from the air cleaner 1 toward the first person and the second person. The number of revolutions of the motor that supplies the air to the person at the position is greater than that of the other. Thereby, the amount of wind and the wind speed of the air blown to the person farther away can be increased, so that it is possible to efficiently purify the air around the person while reducing the operation sound.

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, at the same time, the dust in the area where the person is located is effectively attracted to the suction port 4 Purify the surroundings with priority.

Further, in the air cleaner of the present embodiment, in the wind direction control, the wind direction in the left-right direction is adjusted by the rectifying mechanism 13 and the horizontal turning mechanism 15, and the wind direction in the vertical direction is adjusted by the movable grid plate 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, 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, according to the air cleaner of the present embodiment, since the motor 62A and 62B are provided with the difference in the number of revolutions in the wind direction control, it is possible to efficiently perform the air around the person while reducing the operation sound of the air blowing device 6. Clean and clean.

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 include a device for inputting indoor information about a compartment or an obstacle of a home. Set. 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 the form of directly inputting data, and may be configured by, for example, combining an ultrasonic detector or the like with the human detection device 21 to detect 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.

Further, in the air cleaner of the above-described embodiment, in the wind direction control when the individual person is detected, the number of revolutions of the air blowing device 6 is controlled so that the motors 62A and 62B detected by the number-of-revolution detectors 63A and 63B are The number of revolutions is the same number of revolutions, but the number of revolutions of the motors 62A and 62B may be set to be the same as the wind direction control when the plurality of persons are detected. Further, the configuration in which the number of revolutions is set is set to, for example, stop any of the motors 62A and 62B. Thereby, the operation sound can also be reduced in the wind direction control when the individual person is detected.

Further, in the air cleaner of the above-described embodiment, in the wind direction control, the elevation angle θ2 of the movable grid 9 in the vertical direction is set so that the wind direction is directed toward the air blowing region above the height of the person, but the wind direction in the vertical direction is Not limited to this. That is, if the wind direction in the left and right direction is directed to the person, and the number of revolutions is checked When the number of revolutions of the motors 62A and 62B detected by the detectors 63A and 63B is set to the difference in the number of revolutions, at least the disturbing vibration sound generated by the air blowing device 6 can be suppressed, and the air around the person can be effectively cleaned. .

Embodiment 2

Embodiment 2 of the present invention will be described with reference to Fig. 5. Fig. 5 is a longitudinal sectional view showing an air cleaner according to a second embodiment of the present invention. As shown in the figure, the air cleaner according to the second embodiment of the present invention has the same configuration as that of the air cleaner 1 shown in Fig. 1 described above. However, the air cleaner of the second embodiment is characterized by the air passage length ratio of the air passage 7A and the air passage 7B.

The air passage 7A is configured as follows: a first intake air passage 71A that is formed between the first air blower 6A and the purge device 8 and a first exhaust gas that is formed between the first air blower 6A and the first air outlet 5A. Wind path 72A. In addition, the air passage 7B is configured as follows: a second suction air passage 71B formed between the second air blowing device 6B and the cleaning device 8 and a second air passage between the first air blowing device 6A and the second air outlet 5B. Exhaust air passage 72B. Further, the air passage length HB of the second exhaust air passage 72B is an integral multiple (for example, twice) of the air passage length HA of the first exhaust air passage 72A. In addition, the air passage length DB of the second suction air passage 71B is an integral multiple (for example, twice) of the air passage length DA of the first suction air passage 71A.

According to the air passage configuration described above, the spatial resonance sound generated by the air flowing through the first suction air passage 71A, the second intake air passage 71B, the first exhaust air passage 72A, and the second exhaust air passage 72B can be caused by the sound wave. The relationship of phases cancels each other. Thereby, when the sound generated by the driving of the air blowing device 6 resonates in the air passage, it is possible to suppress the width between the air passages without increasing the width between the air passages, so that the operation sound can be effectively suppressed.

However, in the air cleaner of the second embodiment, the air passage lengths of the first suction air passage 71A and the second suction air passage 71B and the first exhaust air passage 72A and the second exhaust air passage 72B are configured. The length of each of the air passages is an integral multiple, but only the air passage length of the first intake air passage 71A and the second intake air passage 71B or the first exhaust air passage 72A and the second exhaust air passage 72B may be used. The wind path is an integer multiple.

Further, the air passage structure of the air cleaner of the second embodiment described above may be combined with the control of the air cleaner of the first embodiment.

1‧‧‧Air Purifier

2A‧‧‧ next door

3‧‧‧ pedestal

4‧‧‧Inhalation

5‧‧‧Blowing out

5A‧‧‧1st blowout

5B‧‧‧2nd blowout

6A‧‧‧1st air supply unit

6B‧‧‧2nd air supply unit

61A, 61A‧‧‧fan

62A, 62B‧‧ ‧ motor

63A, 63B‧‧‧ Rotary number detector

7,7A, 7B‧‧‧ Wind Road

8‧‧‧Clean purification device

9A, 9B‧‧‧ movable grid (wind direction changing device)

10A, 10B‧‧‧ grid drive unit

11‧‧‧Open variable mechanism

12‧‧‧Open drive department

13A, 13B‧‧ ‧ rectification mechanism (wind direction change device)

15‧‧‧Horizontal swing mechanism (wind direction change device)

20‧‧‧Stain detection device

Claims (10)

An air cleaner comprising: a casing having a suction port for taking in air in the room; and a first outlet and a second outlet for blowing the air; and a first air blowing device that sucks air from the suction port into the casing Inside the body, the air is blown out from the first outlet; the second air blowing device sucks air from the suction port into the casing, and blows the air from the second outlet; the cleaning device will The air flowing inside the casing is cleaned; the wind direction variable mechanism is capable of changing the wind direction of the air blown from the first outlet and the second outlet; the person detecting device detects the person inside the room; and the control device Controlling the first air blowing device, the second air blowing device, and the wind direction variable mechanism; the control device performs wind direction control such that the wind direction is directed toward a person when the person detecting device detects a person, and The number-of-turns control in which the number of revolutions of the first air blowing device and the second air blowing device is set to the number of revolutions is performed. The air cleaner according to claim 1, wherein the wind direction variable mechanism includes: a first wind direction variable mechanism capable of changing a first wind direction of air blown from the first outlet; and a second wind direction variable mechanism of the second air direction of the air blown by the second air outlet; the control device detects that the first person and the second person are included in the person detecting device In the case of a plurality of people, in the wind direction control, the first wind direction is directed in the direction in which the first person is located, and the second wind direction is directed in the direction in which the second person is located. The air purifier according to claim 2, wherein: the person detecting device is configured to be capable of detecting a position of a person indoors; and the control device is located when the first person is located farther than the second person In the case of the position, in the revolution number control, the number of revolutions is set such that the number of revolutions of the first air blower is higher than the number of revolutions of the second blower. The air cleaner according to any one of claims 1 to 3, further comprising a horizontal swing mechanism that can rotate the casing in a horizontal direction. The air cleaner according to any one of claims 1 to 3, wherein the control device is configured to rotate the first air blower and the second air blower in the revolution number control stop. The air cleaner according to any one of claims 1 to 3, further comprising: a first support member for supporting the first air blower inside the casing; 2, the air blowing device is supported by the second supporting member inside the casing; and the first supporting member is configured as an element separated from the second supporting member. The air cleaner according to claim 6, wherein the anti-vibration member is provided between the first air blower and the first support member and between the second air blower and the second support member. The air purifier as described in any one of claims 1 to 3, further comprising: a first suction air passage from the suction port to the first air blowing device; a second suction air passage from the suction port to the second air blowing device; and a first row from the first air blowing device to the first air outlet a gas passage; a second exhaust air passage from the second air blower to the second air outlet; wherein an air passage length of the first intake air passage is an integral multiple of an air passage length of the second intake air passage, Alternatively, the length of the air passage of the first exhaust air passage is an integral multiple of the length of the air passage of the second exhaust air passage. The air cleaner according to claim 8, comprising: a first supporting member for supporting the first air blowing device inside the casing; and the second air blowing device is supported by the second air blowing device a second support member inside the casing; the first support member is configured as an element separate from the second support member. The air cleaner according to claim 9, wherein the anti-vibration member is provided between the first air blower and the first support member and between the second air blower and the second support member.