JPWO2015198421A1 - Air cleaner - Google Patents

Abstract

Provided is an air purifier capable of efficiently purifying air around a person without giving a feeling of blowing to the person. The air cleaner 1 includes a casing 2, a suction port 4, a blowout port 5, a blower device 6, a movable louver 9, a horizontal rotation mechanism 15, an infrared sensor 17, a control device 23, and the like. When a person is detected by the infrared sensor 17, the control device 23 drives the movable louver 9 and the horizontal rotation mechanism 15 to control the air direction of the blown-out air that is blown out from the blowout port 5. In the wind direction control, the wind direction of the blown air is directed to the direction in which the person is present in the horizontal direction, and the wind direction is directed upward from the person in the vertical direction.

Description

  The present invention relates to an air cleaner having a function of purifying sucked air and blowing it out.

  As a prior art, for example, as described in Patent Document 1, an air cleaner capable of changing the direction of an intake port is known. The air cleaner of the prior art is configured to efficiently clean the air around the person by directing the air intake port disposed on the front surface of the main body of the air cleaner in the direction in which the person exists.

Japanese Unexamined Patent Publication No. 2-245212

  In the prior art described above, the air around the person is efficiently cleaned by directing the air inlet of the air cleaner in the direction in which the person exists. However, in this case, there is a problem that a feeling of strangeness (a feeling of blowing) may be given to a person, and the comfort of the user is lowered.

  The present invention has been made to solve the above-described problems, and provides an air purifier that can efficiently clean the air around a person without giving a feeling of being blown to the person. The purpose is to do.

  An air cleaner according to the present invention includes a casing having a suction port and a blowout port, a blower unit that sucks indoor air from the suction port into the casing and blows the air out of the blowout port, and a suction unit that sucks the air into the casing. Purifying means for purifying the air that has been removed, a wind direction varying mechanism capable of changing the wind direction of the air blown from the outlet, a person detecting means for detecting a person existing in the room, a blower means, and a variable wind direction Control means for controlling the mechanism, and when the person is detected by the person detection means, the control means is configured to execute wind direction control that directs the wind direction of the air blown from the air outlet toward the upper side of the person.

  According to this invention, when a person in the room is detected, the direction of the blown air can be directed upward. Thereby, the air around a person can be efficiently cleaned, suppressing the feeling of blowing given to a person. Therefore, user comfort can be improved.

It is a perspective view which shows the air cleaner by Embodiment 1 of this invention. It is a longitudinal cross-sectional view which shows the air cleaner in FIG. It is a principal part enlarged view in FIG. 1 which shows the operation state (a) and (b) of a movable louver and a rectification | straightening mechanism. It is a block diagram which shows the control system of the air cleaner by Embodiment 1 of this invention. It is a characteristic diagram which shows the relationship between the elevation angle of a wind direction, a wind speed, and a relative dust removal speed.

  Embodiments of the present invention will be described below with reference to the drawings. In each drawing used in this specification, common elements are denoted by the same reference numerals, and redundant description is omitted. The present invention is not limited to the following embodiments, and can be variously modified without departing from the gist of the present invention.

Embodiment 1 FIG.
First, Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing an air cleaner according to Embodiment 1 of the present invention. FIG. 2 is a longitudinal sectional view showing the air cleaner in FIG. As shown in these drawings, in the present embodiment, a floor-mounted air cleaner 1 is illustrated. The air purifier 1 includes a casing 2, a pedestal 3, a suction port 4, an air outlet 5, an air blower 6, an air passage 7 </ b> A, 7 </ b> B, a cleaning device 8, a movable louver 9, a louver drive unit 10, an opening variable mechanism 11, an opening A drive unit 12, a rectification mechanism 13, a rectification drive unit 14, a horizontal rotation mechanism 15, an external detection device 16, a contamination detection device 21, a control device 23, and the like are provided.

  The casing 2 is formed of, for example, a tower-shaped casing that is formed in a substantially rectangular prism shape and is formed in a vertically long shape extending in a direction perpendicular to the floor surface. Moreover, the casing 2 is supported in the state which can be rotated in the horizontal direction by the base 3 installed in the floor surface of a room. As shown in FIG. 2, the cleaning device 8, the blower device 6, and the air passage 7 are sequentially arranged in the space from the suction port 4 to the blowout port 5 in the internal space of the casing 2, from upstream to downstream. ing.

  In the following description, a portion of the side surface portion of the casing 2 that is disposed mainly facing the indoor space is referred to as a front portion, and a portion that faces the front portion is referred to as a back portion. Moreover, the direction which the front part of the casing 2 faced is described as the front, the direction corresponding to the left and right sides of the casing 2 as viewed from the front is expressed as the left and right directions, and the vertical direction is also expressed as the up and down direction in some cases. The air cleaner 1 is installed on the floor surface at a position close to any wall of the room, for example, and is used in a state where the back surface portion of the casing 2 faces the wall surface and the front surface portion of the casing 2 faces the indoor space. Is done.

  The suction port 4 is an opening for sucking indoor air into the casing 2, and is provided in the front portion of the casing 2, for example. The suction port 4 has a vertically long opening shape extending in the vertical direction. The blower outlet 5 is an opening for blowing the air sucked into the casing 2 to the outside, and is constituted by, for example, two blower outlets 5 </ b> A and 5 </ b> B opened at the upper surface of the casing 2. The two outlets 5 </ b> A and 5 </ b> B extend in parallel with each other along the left-right direction of the casing 2. In the following description, the air blown out from the blowout port 5 (blowout ports 5A and 5B) may be referred to as “blowout air”. Moreover, in this invention, the suction inlet 4 may be arrange | positioned in the back surface part, side part, lower surface part, etc. of the casing 2, and the blower outlet 5 may be arrange | positioned in the front part, side part, etc. of the casing 2. Good. Furthermore, only one blower outlet 5 may be arrange | positioned in the casing 2, and three or more blower outlets 5 may be arrange | positioned.

  The blower device 6 sucks air into the casing 2 from the suction port 4 and blows out the air from the blowout port 5. The fan 6A that is a main body of the device and an electric motor 6B that rotates the fan 6A. And. The rotational speed of the fan 6A is controlled by the control device 23, and the air volume of the blown air is changed according to the rotational speed. That is, the air blower 6 shows a specific example of air blowing changing means capable of changing the air volume of the blown air. As shown in FIG. 2, for example, two air blowers 6 are arranged side by side in the vertical direction in the casing 2 with their positions shifted in the front-rear direction. In addition, the air blower 6 comprises the air blower of this Embodiment.

  In addition, an air passage 7 that connects the blower 6 and the blower outlet 5 and guides the air blown from the blower 6 to the blower outlet 5 is provided inside the casing 2. The air passage 7 is divided into a front air passage 7A and a rear air passage 7B by a partition wall 2A provided inside the casing 2. The two air passages 7A and 7B extend in the vertical direction inside the casing 2, and are arranged in parallel in the front-rear direction when viewed in a horizontal section, for example.

  The lower sides of the air passages 7A and 7B are connected to different air blowers 6, and the upper sides of the air passages 7A and 7B are connected to the air outlets 5A and 5B, respectively. That is, the air purifier 1 reaches the blower outlet 5B from the first blower 6 via the air passage 7A to the blowout outlet 5A and the other blower 6 via the air passage 7B. And the second air blowing system. In these air blowing systems, the air volume, the wind direction, and the wind speed can be controlled separately.

  As described above, in the first embodiment, the partition wall 2A is arranged inside the casing 2, and the two air passages 7A and 7B are formed in parallel in the front-rear direction. In addition, of the two air blowers 6, at least one of the air blowers 6 positioned on the upper side in FIG. 2 is configured by a motor-incorporated air blower in which a part of the motor 6B is embedded in the fan 6A. Has been. Thereby, the installation area of the air cleaner 1 can be reduced in size while efficiently forming two air blowing systems inside the casing 2, and a small and high-performance air cleaner 1 can be realized. Moreover, since the air cleaner 1 can be formed in a vertically long shape that is elongated in the vertical direction, the external detection device 16 can be installed at a height of 65 cm or more from the floor as described later.

  The cleaning device 8 cleans the air that passes through the inside of the casing 2, and is provided between the suction port 4 and the blower device 6, for example. The cleaning device 8 has a vertically long outer shape that extends in the vertical direction inside the casing 2. Here, “cleaning” means removing contaminants such as dust, smoke, pollen, viruses, molds, fungi, allergens, and odor molecules floating in the air. Means the action of collecting, deactivating, adsorbing and decomposing these contaminants. More specifically, the cleaning device 8 removes and decomposes pollutants by applying a high voltage to the dust collection filter that collects dust in the air, a deodorization filter that adsorbs odor components, and electrodes. It is comprised by the voltage application device etc., or is comprised by these combination. The cleaning device 8 constitutes the cleaning means of the present embodiment.

  Next, FIG. 3 is an enlarged view of a main part in FIG. 1 showing operating states (a) and (b) of the movable louver and the rectifying mechanism. As shown in FIGS. 2 and 3, the movable louver 9 swings the air direction of the blown air in the vertical direction, and is provided one by one at the outlets 5 </ b> A and 5 </ b> B of the casing 2. More specifically, the movable louver 9 is formed by, for example, an elongated flat plate extending in the left-right direction of the casing 2. And the base end side of the movable louver 9 is attached to each blower outlet 5A, 5B via the louver drive part 10 provided in blower outlet 5A, 5B, respectively, and the front end side of the movable louver 9 is a louver drive part. 10 can swing up and down. In addition, the two movable louvers 9 are configured such that the direction of the air blown out from the outlets 5A and 5B can be individually changed. In the present embodiment, the case where the two movable louvers 9 are provided is illustrated, but the present invention may be configured so that only one or three or more movable louvers 9 are provided depending on the number of the outlets 5. Good.

  The movable louver 9 swings in the vertical direction, so that the air direction of the blown air swings in the vertical direction between the front and the upper according to the swing angle. The elevation angle of the wind direction is changed to an angle substantially equal to the elevation angle of the movable louver 9. In the present specification, the “elevation angle” means an angle inclined upward with respect to a horizontal direction parallel to the floor surface. That is, the elevation angle = 0 ° represents the horizontal direction, and the elevation angle = 90 ° represents the vertical direction.

  The louver drive unit 10 includes a support shaft that supports the movable louver 9 in a swingable manner, and an actuator (not shown) that rotates the support shaft. The movable louver 9 and the louver driving unit 10 constitute a specific example of a wind direction variable mechanism 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, for example, at a position facing one movable louver 9 in the front-rear direction, and changes the opening area of the outlet 5 </ b> A in cooperation with the movable louver 9. is there. In FIGS. 1 and 3, the opening variable mechanism 11 is not shown in order to clearly show a rectifying mechanism 13 described later. Moreover, in FIG. 2, although the case where the opening variable mechanism 11 was arrange | positioned only to one blower outlet 5A was illustrated, this invention is not restricted to this, Only the other blower outlet 5B or both blower outlets 5A and 5B are shown. It is good also as a structure which arrange | positions the opening variable mechanism 11. FIG.

  The opening variable mechanism 11 is formed by, for example, an elongated flat plate extending in the left-right direction of the casing 2. The base end portion of the opening variable mechanism 11 is attached to the air outlet 5 </ b> A via an opening driving unit 12 having a configuration substantially similar to that of the louver driving unit 10. The tip of the opening variable mechanism 11 is swung in the front-rear direction by the opening driving unit 12 and displaced so as to approach and separate from the movable louver 9. Thereby, the opening variable mechanism 11 can increase / decrease the opening area of 5 A of blower outlets, and can change the wind speed of blowing air according to the said opening area. That is, the opening variable mechanism 11 and the opening driving unit 12 constitute a specific example of the air blowing changing means capable of changing the wind speed of the blown air. In addition, the opening variable mechanism 11 is good also as a mechanism arrange | positioned not in the blower outlet 5, but in one or both of air path 7A, 7B, and changing the opening area (flow path area) of the air path 7. FIG.

  The rectifying mechanism 13 adjusts the wind direction in the left-right direction while maintaining the elevation angle of the wind direction set by the movable louver 9. As shown in FIGS. 2 and 3, the rectifying mechanism 13 is formed of, for example, a substantially triangular (fan-shaped) fin, protrudes from the wind receiving surface side of each movable louver 9, and includes a plurality of rectifying mechanisms 13 at intervals in the left-right direction. Has been placed. Each rectifying mechanism 13 swings in the left-right direction as shown in FIGS. 3A and 3B, and changes the direction of the blown air in the left-right direction according to the swing angle.

  Further, the swinging operation of the rectifying mechanism 13 is executed by, for example, a rectifying drive unit 14 (shown only in FIG. 4) provided in the movable louver 9. That is, the rectification mechanism 13 and the rectification drive unit 14 constitute a specific example of a wind direction variable mechanism that can change the wind direction of the blown air in the left-right direction. In the present invention, the rectifying mechanism 13 is not necessarily provided. Further, for example, one rectifying mechanism 13 may be arranged only on both the left and right ends of the movable louver 9.

  As shown in FIGS. 1 and 2, the horizontal rotation mechanism 15 is provided between the casing 2 and the pedestal 3 and rotates the casing 2 on the pedestal 3 at least in the left-right direction. Since the direction of the blower outlet 5 changes in the horizontal direction together with the casing 2, the horizontal rotation mechanism 15 constitutes a specific example of a wind direction variable mechanism that can change the wind direction of the blown air in the left-right direction.

(Control system)
Next, with reference to FIG. 4 etc., the control system of the air cleaner 1 is demonstrated. FIG. 4 is a configuration diagram showing a control system of the air cleaner according to the first embodiment of the present invention. The air cleaner 1 includes a sensor system including an external detection device 16 and a contamination detection device 21, an operation unit 22 for operating the air cleaner 1, and a control device 23 for controlling the operating state of the air cleaner 1. I have. In addition, the control apparatus 23 comprises the control means of this Embodiment.

  The external detection device 16 detects indoor information of the room in which the air purifier 1 is installed, and is provided, for example, on the upper front side of the casing 2 (see FIG. 1). In addition, the external detection device 16 includes an infrared sensor 17 as a person detection unit that detects a person existing in the room using infrared rays. Details of the infrared sensor 17 will be described later. Further, the human detection means is not necessarily configured by the infrared sensor 17 and may be configured by another sensor capable of detecting a human. Moreover, you may comprise the external detection apparatus 16 by combining the infrared sensor 17 and another sensor (not shown). The other sensor is constituted by at least one sensor among a dirt sensor, a moving body sensor, a distance sensor, a humidity sensor, an illuminance sensor, and the like.

  Here, the dirt sensor (dust sensor) includes a semiconductor element, an optical element, and the like, and detects the concentration of dust, smoke, pollen, etc. in the air. The distance sensor is composed of, for example, a non-contact sensor such as an ultrasonic sensor, an optical sensor, or an image recognition sensor, and detects the distance between the air cleaner 1 and the detection target object using sound waves or electromagnetic waves. Objects to be detected include indoor walls, ceilings, furniture, people, animals, and the like. The illuminance sensor detects the presence, movement, etc. of a person and an animal in the room based on a change in illuminance. The output of the humidity sensor is used when correcting the sensitivity of each sensor according to the humidity. In addition, the combination of each said sensor is only an example, and this invention is not limited to the external detection apparatus 16 by the combination of each said sensor.

  Further, as will be described later, the external detection device 16 includes a sensor rotation mechanism 20 that rotates the directions of the infrared sensor 17 and the other sensors in the horizontal direction (both sides in the left-right direction) with respect to the casing 2. The sensor rotation mechanism 20 is configured by, for example, a stepping motor. The sensor rotation mechanism 20 may rotate at least the infrared sensor 17, but may be configured to rotate a sensor having directivity among other sensors.

  On the other hand, the contamination detection device 21 detects the amount of contaminants in the air sucked into the casing 2 and is arranged upstream of the cleaning device 8 in the air flow direction. The contamination detection device 21 is configured by, for example, a dust sensor, a gas sensor, a wind speed sensor, or the like, or a composite sensor in which these sensors are combined. According to the contamination detection device 21, the air cleaner 1 blows out air in a specific direction, and detects the amount of contaminants in the air returning from this direction, whereby the degree of air pollution in the specific direction is detected. Can be detected. In the present embodiment, the external detection device 16 other than the infrared sensor 17 and the contamination detection device 21 are the distance from the ceiling or wall surface of the room to the air cleaner 1 and the contamination of the indoor air. A specific example of information detecting means for detecting room information including at least one of the degrees of information is configured.

  On the other hand, the operation unit 22 is operated when the user of the air purifier 1 performs various settings and switching of operation. The power switch for starting and stopping the air purifier 1 and the air purifier 1 And a display unit for displaying an operation state and the like. The operation unit 22 is connected to the control device 23 in a state where bidirectional communication is possible.

  The control device 23 controls the operating state of the air purifier 1 and includes an arithmetic processing device, an input / output port, a storage circuit, and the like (not shown). As shown in FIG. 4, a sensor system including the external detection device 16 and the contamination detection device 21 is connected to the input side of the control device 23. An actuator including a blower 6, a cleaning device 8, a louver drive unit 10, an opening drive unit 12, a rectification drive unit 14, a horizontal rotation mechanism 15, a sensor rotation mechanism 20, and the like is connected to the output side of the control device 23. Yes. And the control apparatus 23 operates the air cleaner 1 by controlling an actuator based on the output of a sensor system | strain.

  Next, the basic operation of the air cleaner 1 will be described. When the air cleaner 1 is in operation, first, the blower 6 and the cleaning device 8 are driven by the control device 23. Thereby, air is sucked into the inside from the suction port 4 of the casing 2, and this air is cleaned by the cleaning device 8. And the purified air reaches | attains blower outlet 5A, 5B via each air blower 6 and wind path 7A, 7B, and is ventilated outside from blower outlet 5A, 5B. At this time, the control device 23 performs processing for changing the rotational speed of the blower 6 (fan 6A) based on the outputs of the external detection device 16 and the contamination detection device 21, the movable louver 9, the opening variable mechanism 11, and the rectifying mechanism. 13. The process of driving the horizontal rotation mechanism 15 and the like is executed as necessary. Thereby, as will be described later, the control device 23 can appropriately control at least one parameter of the air volume, the wind speed, and the wind direction of the blown-out air according to the indoor conditions and the like.

(Infrared sensor)
The infrared sensor 17 mounted on the external detection device 16 will be described. The infrared sensor 17 detects infrared rays generated from the detection target and includes a sensor rotation mechanism 20.

(Person detection control)
Next, human detection control executed by the control device 23 will be described. In human detection control, the infrared sensor 17 scans the room in the left-right direction, detects the temperature, and acquires thermal image data for the entire scanning range. Thereby, the presence or absence of the person who exists in the room and the distance from the air cleaner 1 to the person can be detected. Further, the air cleaner 1 can rotate the infrared sensor 17 by a sensor rotation mechanism 20 that is separate from the horizontal rotation mechanism 15 that rotates the casing 2. According to this configuration, for example, the room can be scanned by the infrared sensor 17 even when the air outlet 5 is held in a fixed direction in the horizontal direction, and the human detection control is executed without affecting the air blowing operation. be able to.

  In addition, since the infrared sensor 17 is configured by arranging a plurality of light receiving elements in the vertical direction, the presence / absence of a person and the distance between the air cleaner 1 and the person at a specific angle in the horizontal direction (a human area described later). It can be detected with high accuracy.

  Here, the height position of the infrared sensor 17 is set to 65 cm or more, preferably 75 cm or more, more preferably 80 cm or more from the floor surface on which the air purifier 1 is installed, for example. This setting is for the following reason. First, for a person of height h, the optimum height H of furniture whose top surface is a work place such as a table or a desk is given by the following equation (1), for example. Here, the height H is the distance between the top surface of the furniture and the floor surface, and the unit of h and H is cm.

[Equation 1]
H = 0.433 × h−2

  According to the above formula 1, it is common for a person whose height h is within an average range (for example, about 154 to 171 cm) to use furniture having a height H of about 65 to 72 cm. On the other hand, in the present embodiment, the infrared sensor 17 can be arranged at a position higher than the top surface of the furniture, so that furniture such as a table and a desk gets in the way when scanning the room with the infrared sensor 17. This prevents the infrared rays from being blocked. Thereby, even in a room where furniture is arranged, the presence of a person can be detected with high accuracy, and the performance of the air cleaner 1 can be stably exhibited. In the present invention, for example, the average height h and the optimum height H may be obtained for each country where the air cleaner 1 is used, and the height position of the infrared sensor 17 may be changed for each country.

(Wind direction control)
Next, the wind direction control executed by the control device 23 will be described. When it is determined that a person is present in the room based on the thermal image data acquired by the infrared sensor 17, the control device 23 performs wind direction control. In the wind direction control, first, a horizontal rotation angle θ1 necessary for directing the front portion of the air purifier 1 toward the person is calculated. Subsequently, the casing 2 is rotated by the rotation angle θ1 by the horizontal rotation mechanism 15. Thereby, the blower outlet 5 will be in the state which faced the direction where a person exists in a horizontal direction. In the following description, a direction in which a person is present in the horizontal direction with the position of the air purifier 1 as a center is referred to as a “person area”. That is, the rotation angle θ1 corresponds to an angle for directing the air outlet 5 toward the human area. Further, in the present invention, when it is assumed that the front portion (air blowing side) of the air cleaner 1 is installed facing a person, the air blowing direction in the horizontal direction is the human area. Further, the process of rotating the casing 2 by the rotation angle θ1 becomes unnecessary.

  In the next process, the elevation angle θ2 of the movable louver 9 in the vertical direction, that is, the elevation angle θ2 of the wind direction is set so that the wind direction is directed upwards of the person in the person area. Then, the movable louver 9 is driven by the louver driving unit 10 to realize the elevation angle θ2. The elevation angle θ2 is set, for example, in the range of 60 to 90 °, preferably 75 °, based on the characteristic data shown in FIG. Here, FIG. 5 is a characteristic diagram showing the relationship between the elevation angle of the wind direction, the wind speed, and the relative dust removal speed.

  In FIG. 5, the relative dust removal speed represents a value obtained by normalizing the average dust removal speed ηQ at each measurement point in the human area by the air volume generated by the blower 6. For example, the measurement points are appropriately set at a plurality of locations where the average dust removal speed in the human area can be measured. The relative dust removal speed increases as the air purification efficiency increases. Moreover, the wind speed in FIG. 5 has shown the wind speed in a person area. The characteristic data shown in FIG. 5 was obtained in a room with a size of 16 tatami mats, but it was confirmed that characteristic data similar to that in FIG. 5 can be obtained in a room with other sizes. It was.

  When the elevation angle θ2 is set in the range of 60 to 90 ° by the wind direction control, the wind speed at the position of the person detected by the infrared sensor 17 is suppressed to 0.3 m / sec or less as shown in FIG. . In particular, when the elevation angle θ2 is set to 75 °, the wind speed at the position of the person is minimized and the relative dust removal speed is maximized. Here, 0.3 m / sec is an allowable limit of the wind speed that does not give a feeling of being blown to a person, and is set in advance by an experiment or the like. That is, when the wind speed at the position of the person exceeds the allowable limit, a feeling of blowing is generated. Note that 0.3 m / sec is an example of an allowable limit, and does not limit the present invention.

  As described above, according to the present embodiment, by setting the elevation angle θ2 of the wind direction in the range of 60 to 90 °, it is possible to blow out air toward the upper side of the person, and to feel the blowing feeling given to the person. While suppressing, the air around a person can be efficiently cleaned. In particular, when the elevation angle θ2 is set to 75 °, the wind speed can be minimized below the allowable limit, and the air purification efficiency can be maximized. In addition, the air purifying ability can be exhibited most with respect to the center of the room in the front portion of the air purifier 1. Therefore, according to the present embodiment, it is possible to appropriately set the elevation angle θ2 of the wind direction and improve user comfort.

  Further, in the wind direction control, when the distance between the person detected by the infrared sensor 17 and the air cleaner 1 is smaller than a preset proximity determination value, the elevation angle of the wind direction is set to 80 ° or more, preferably 90 °. To do. The proximity determination value is preferably set to 50 to 100 cm, for example, but may be set to other values depending on the situation. According to this control, even when there is a person near the air purifier 1, the air can be purified without giving a feeling of being blown to the person.

(Wind direction control during unmanned operation)
The control device 23 performs wind direction control during unattended when no person in the room is detected by the infrared sensor 17. In this control, for example, the elevation angle θ3 of the wind direction is set within a range of 20 to 90 °. In the unmanned wind direction control, the wind direction may be swung in the vertical direction within a range where the elevation angle θ3 is 20 to 90 °. The lower limit value (for example, 20 °) of the elevation angle θ3 is set as the smallest elevation angle within a range in which dust on the floor surface is not lifted by the blown air. According to this control, when there is no need to consider the feeling of blowing to a person, the elevation angle θ3 of the wind direction can be set in a wide range, or the wind direction can be swung in a wide range of elevation angles. Can be efficiently cleaned.

  Further, when a person in the room is not detected, at least the elevation angle θ3 of the wind direction may be controlled based on the room information detected by the external detection device 16 and the contamination detection device 21 among the air volume, the wind speed, and the wind direction of the blown air. Here, the room information includes at least one of the distance from the ceiling or wall surface of the room to the air purifier 1 detected by the above-described distance sensor and the like, and the degree of contamination of the indoor air detected by the contamination detection device 21. Contains information.

  The control device 23 controls the elevation angle θ3 of the wind direction based on the room information, thereby forming an appropriate air flow in the room according to the size of the room, the degree of contamination, and the like. Thereby, even in a room where there is no person, for example, the entire room can be efficiently cleaned while giving priority to a place with a high degree of contamination. In the present invention, the elevation angle θ2 set by the wind direction control may be further corrected based on the room information in a state where a person in the room is detected.

  Further, in the present embodiment, the wind direction variable mechanism includes the movable louver 9, the rectifying mechanism 13, and the horizontal rotation mechanism 15. As a result, the wind direction of the blown air can be accurately set by dividing it into the horizontal rotation angle θ1 and the vertical elevation angles θ2 and θ3. Further, the wind direction can be adjusted in the left-right direction by the rectifying mechanism 13 while basically maintaining the wind direction set by the rotation angle θ1 and the elevation angles θ2 and θ3. Accordingly, it is possible to further improve the directivity and control accuracy of the wind direction.

  In the first embodiment, the floor-mounted air cleaner 1 has been described as an example. However, the present invention is not limited to this and can be applied to a wall-mounted air cleaner. In the first embodiment, in the wind direction control, at least the wind direction is controlled among the three parameters including the wind direction, the air volume, and the wind speed. However, the present invention is not limited to this. In the wind direction control, the air volume and the wind speed may be controlled as necessary.

  In the first embodiment, the wind direction is changed to the left and right directions by the horizontal rotation mechanism 15. However, in the present invention, the reciprocating operation in the vertical direction is performed while the wind direction is changed to the left direction and the right direction. A horizontal rotation mechanism capable of performing an operation) may be employed. Moreover, in Embodiment 1, although it was set as the structure which can change the air volume of blowing air with the air blower 6, this invention is not restricted to this, It is good also as a structure which changes an air volume by another mechanism.

DESCRIPTION OF SYMBOLS 1 Air cleaner, 2 Casing, 2A Bulkhead, 3 Base, 4 Suction port, 5, 5A, 5B Air outlet, 6 Air blower (blower means), 6A Fan, 6B Motor, 7, 7A, 7B Air path, 8 Clean Device (cleaning means), 9 movable louver (wind direction variable mechanism), 10 louver drive unit (wind direction variable mechanism), 11 aperture variable mechanism, 12 aperture drive unit, 13 rectifier mechanism (wind direction variable mechanism), 14 rectifier drive unit (Wind direction variable mechanism), 15 horizontal rotation mechanism (wind direction variable mechanism), 16 external detection device (information detection means), 17 infrared sensor (human detection means), 20 sensor rotation mechanism (rotation mechanism), 21 contamination detection device (information Detection means), 22 operation unit, 23 control device (control means)

An air cleaner according to the present invention includes a casing having a suction port and a blowout port, a blower unit that sucks indoor air from the suction port into the casing and blows out the air from the blowout port, and a suction unit that sucks the air into the casing. Purifying means for purifying the air that has been removed, a wind direction varying mechanism capable of changing the wind direction of the air blown from the outlet, a person detecting means for detecting a person existing in the room, a blower means, and a variable wind direction Control means for controlling the mechanism, and when the person is detected by the person detection means, the control means executes a wind direction control that directs the wind direction of the air blown out from the air outlet toward the upper side of the person. The elevation angle of the wind direction with respect to the horizontal direction is set to an angle at which the wind speed at the position of the person detected by the person detecting means is equal to or less than a preset allowable limit .

Claims (9)

A casing having an inlet and an outlet;
Blowing means for sucking indoor air into the casing from the inlet and blowing the air out of the outlet;
A cleaning means for cleaning air sucked into the casing;
A wind direction variable mechanism capable of changing a wind direction of air blown from the air outlet;
A person detecting means for detecting a person existing in the room;
Control means for controlling the air blowing means and the wind direction varying mechanism;
With
The said control means is an air cleaner which carried out the wind direction control which orient | assigns the wind direction of the air which blown off from the said blower outlet upwards, when a person is detected by the said person detection means.   2. The air cleaner according to claim 1, wherein the air direction control is configured such that a wind direction of air blown from the air outlet is directed in a direction in which a person is present in a horizontal direction and the wind direction is directed upward in the vertical direction. .   In the wind direction control, the elevation angle of the wind direction with respect to the horizontal direction is set to an angle at which the wind speed at the position of the person detected by the person detection means is equal to or less than a preset allowable limit. The air cleaner described.   The air cleaner according to any one of claims 1 to 3, wherein, in the wind direction control, an elevation angle of the wind direction with respect to a horizontal direction is set within a range of 60 to 90 °.   In the wind direction control, when the distance between the person detected by the person detecting means and the air cleaner is smaller than a preset proximity determination value, the elevation angle of the wind direction with respect to the horizontal direction is set to 80 ° or more. The air cleaner according to any one of claims 1 to 4.   The control means sets an elevation angle of the wind direction with respect to a horizontal direction within a range of 20 to 90 ° when a person in the room is not detected by the person detection means, or sets the wind direction to an elevation angle of 20 to 90 The air cleaner according to any one of claims 1 to 5, wherein the air cleaner is swung in a vertical direction within a range of °. Comprising information detecting means for detecting indoor information including at least one of the distance from the ceiling or wall surface of the room to the air purifier and the degree of indoor air pollution;
The air cleaner according to any one of claims 1 to 6, wherein the control means controls the wind direction based on the room information when no person in the room is detected by the person detection means.   The air cleaner according to any one of claims 1 to 7, wherein the human detection means is arranged at a height of 65 cm or more from the floor surface when an air cleaner is installed on the floor surface of the room. Machine. The wind direction variable mechanism is
A horizontal rotation mechanism for rotating the casing in a horizontal direction;
A movable louver capable of swinging the wind direction up and down;
A rectifying mechanism capable of adjusting the wind direction in the left-right direction while maintaining the elevation angle of the wind direction set by the movable louver;
The air cleaner according to any one of claims 1 to 8, comprising:

Images