JP2009274050A - Air cleaner and its operation method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air cleaner which enables accurate detection of the presence of a human, and does not impair the designability of its body by solving a problem that the conventional air cleaners detect the presence of a human by using a temperature difference, which causes malfunction due to reaction to any heat source generating a temperature difference regardless of the presence of a human, and a problem that it is necessary to recess a concave human sensitive sensor installation part, which reduces a degree of design freedom of the body to impair the designability. <P>SOLUTION: The air cleaner is provided with a human sensitive sensor 5 as a human detecting means detecting the motion direction of a human, and a control circuit 6 equipped with a microcomputer 7 controlling the operation of a fan motor 3 from a detection signal of the human sensitive sensor 5. The human sensitive sensor 5 has a predetermined detection area 8. The control circuit 6 controls the operation of the fan motor 3 based on the detection signal of the motion direction of a human passing the detection area 8, which enables installing of the human sensitive sensor without impairing the designability, and enables obtaining of an air cleaner capable of accurately detecting the presence of a human. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an air purifier that detects indoor air contamination with a dust sensor and a gas sensor, and that a control unit drives a blowing unit to suck in indoor air and cleans it through a purification unit.

  Conventionally, this type of air purifier is known as described below.

  Hereinafter, the air cleaner will be described with reference to FIGS. 16 and 17. As shown in FIG. 16, the air cleaner main body 101 is provided with an air inlet 102 on the front side, an air outlet 103 on a side surface, and a motor 104 and a fan 105 inside the main body 101. In addition, a display unit 106 is provided in the front, and a human sensor 107 is provided in the display unit 106. As shown in FIG. 17, the detailed configuration of the display unit 106 includes a human sensor installation unit 108 and a human sensor 107 at the center of the display unit 106, and a dust sensor 109 for detecting dust in the air on the left side. .

In the above configuration, the human sensor installation portion 108 has a concave curved surface shape and is formed so as to be recessed in the display unit 106 so that the human sensor 107 does not protrude outward from the peripheral portion of the human sensor installation portion 108. In addition, it is provided at a substantially central position of the human sensor installation portion 108 (see, for example, Patent Document 1).
JP 2001-62228 A

  In such a conventional air purifier, since the presence or absence of a person is detected based on a temperature difference, there is a problem in that it reacts to a heat source that generates a temperature difference regardless of the person and malfunctions.

  In addition, since it is necessary to provide a concave curved human sensor installation portion, there is a problem that the degree of freedom in designing the main body is reduced and the design is impaired.

  The present invention solves such a conventional problem, and an object thereof is to provide an air cleaner that can accurately detect the presence or absence of a person and does not impair the design of the main body.

  In order to achieve the above object, an air cleaner of the present invention has an air inlet provided in a main body, a purifying means for cleaning dirty air sucked from the air inlet, an air blowing means for ventilating the purifying means, a human And a control unit for controlling the operation of the blower unit based on a detection signal from the human detection unit, the human detection unit having a predetermined detection area, and the predetermined detection area. The control means controls the operation of the air blowing means by a detection signal of the direction of movement of the passing person.

  By this means, it is possible to provide a human detection means without impairing the design, and it is possible to accurately detect the presence or absence of a person by detecting the direction of movement of the person, and to control the blowing means according to the presence or absence of a person. An air purifier is obtained.

  Further, the human detection means is provided so as to include a door of the room in a predetermined detection area of the human detection means, the entry / exit of the room is detected by the detection signal of the person detection means, and the control means blows air according to the entry / exit of the room The operation of the means is automatically controlled.

  By this means, the person who enters and exits the room can be accurately detected, and an air cleaner capable of automatically controlling the air blowing means according to the entry and exit of the room is obtained.

  The control means counts the detection result of entering / exiting the room based on the detection signal of the person detection means, and determines the number of people in the room.

  By this means, an air cleaner capable of determining the number of people in the room is obtained.

  The control means automatically controls the operation of the air blowing means according to the number of people in the room.

  By this means, an air cleaner that automatically controls the air blowing means according to the number of people in the room can be obtained.

  Moreover, the display part which displays a driving | running state is provided, The said display part turns off the display of the said display part, when the number of people in a room is zero by the detection result of entrance / exit.

  By this means, when there is no person, the display unit is turned off, and an air cleaner that reduces power consumption can be obtained.

  Further, the apparatus includes a dirt detection means for detecting a dirt component in the air and a control means for judging a detection signal of the previous dirt detection means, and the control means has a predetermined threshold value for judging the detection signal of the dirt detection means. The threshold value is changed when entry / exit of the room is detected.

  By this means, it is possible to obtain an air cleaner capable of automatically setting the sensitivity of the dirt detecting means individually when there is a person and when there is no person.

  The control means changes the threshold value for determining the detection signal of the dirt detection means according to the number of people in the room.

  By this means, an air cleaner capable of automatically setting the sensitivity of the dirt detection means individually according to the number of people in the room can be obtained.

  Further, when the number of people in the room is zero based on the detection result of entering / exiting the room, the operation of the dirt detecting means is made intermittent.

  By this means, when there is no person in the room, the dirt detection means can be operated intermittently, and an air cleaner capable of reducing power consumption can be obtained.

  Further, when the dirt detecting means detects the dirt, the control means invalidates the detection signal of the person detecting means.

  By this means, an air purifier that controls the air blowing means by giving priority to air contamination by the detection signal of the dirt detection means over the presence or absence of a person by the detection signal of the human detection means can be obtained.

  In addition, a switch that can switch the detection signal of the human detection means between valid and invalid is provided.

  By this means, an air cleaner can be obtained in which the user can select whether to enable / disable the control of the air blowing means by the human detection means.

  Moreover, a movable part is provided, and a person detecting means is provided on the movable part.

  By this means, the position of the human detection means can be moved according to the installation location of the air cleaner body, and an air cleaner can be obtained in which the user can freely set the installation location of the air cleaner body.

  Also, a remote controller is provided, and a human detection means is provided on the remote controller.

  By this means, the user can freely set the installation location of the air cleaner main body, and an air cleaner can be obtained in which the installation position of the human detection means can also be set freely.

  In addition, a human sensor provided at the entrance of the room, a first boundary located on the outer side of the detection area of the human sensor, and a second boundary located on the near side of the room. If the person who has passed through the detection area from the first boundary side is detected, it is determined that the person has entered the room, and the person who has passed through the detection area from the second boundary side has been detected. In this case, it is determined that the person has left the room and the air cleaner is operated.

  By this means, the presence or absence of a person can be accurately detected by detecting the direction of movement of the person, and a method of operating the air cleaner by controlling the blowing means according to the presence or absence of a person is obtained.

  According to the present invention, the air inlet provided in the main body, the purifying means for purifying the dirty air sucked from the air inlet, the blowing means for ventilating the purifying means, and the human detecting means for detecting the direction of movement of the person And a control means for controlling the operation of the blower means based on the detection signal of the person detection means, the person detection means having a predetermined detection area, and a detection signal of the movement direction of the person passing through the predetermined detection area By controlling the operation of the blowing means, the control means can be provided with a human detection means without impairing the design, and the presence or absence of a person can be accurately detected by detecting the direction of movement of the person. It is possible to provide an air cleaner that is effective in controlling the blowing means according to the presence or absence of a person.

  Further, the human detection means is provided so as to include a door of the room in a predetermined detection area of the human detection means, and the entrance / exit of the room can be detected by the detection signal of the person detection means, and the control means sends air according to the entrance / exit of the room. By automatically controlling the operation of the means, it is possible to accurately detect the person entering and exiting the room, and it is possible to provide an air cleaner that is effective in automatically controlling the air blowing means in accordance with the entry and exit of the room.

  Further, the control means counts the detection result of entering / exiting the room based on the detection signal of the person detection means, and can determine the number of people in the room, so that the number of people in the room can be determined. Can provide an air purifier.

  In addition, since the control means can automatically control the operation of the air blowing means according to the number of people in the room, the air having the effect of being able to automatically control the air blowing means according to the number of people in the room A purifier can be provided.

  In addition, a display unit for displaying the driving state is provided, and when the number of people in the room is zero based on the detection result of entering / exiting the room, the display unit is turned off so that there is no person Can provide an air purifier that can effectively turn off the display unit and reduce power consumption.

  Further, the apparatus includes a dirt detection means for detecting a dirt component in the air and a control means for judging a detection signal of the previous dirt detection means, and the control means has a predetermined threshold value for judging the detection signal of the dirt detection means. Since the threshold value is changed at the time of entering / exiting the room, it is possible to provide an air purifier having an effect that the sensitivity of the dirt detecting means can be automatically set individually when there is a person and when there is no person.

  In addition, since the control means changes the threshold for determining the detection signal of the dirt detection means according to the number of people in the room, the sensitivity of the dirt detection means can be automatically set individually according to the number of people in the room. It is possible to provide an air purifier that is effective.

  In addition, when the number of people in the room is zero according to the detection result of entering / exiting the room, the operation of the dirt detection means is made intermittent so that the operation of the dirt detection means is made intermittent when there is no person in the room. Therefore, it is possible to provide an air cleaner that is effective in reducing power consumption.

  In addition, when the dirt detection means detects the dirt, the control means invalidates the detection signal of the person detection means, so that the dirt detection means is more sensitive than the presence or absence of a person based on the detection signal of the person detection means. It is possible to provide an air cleaner that has an effect of being able to control the air blowing means with priority given to air contamination caused by the detection signal.

  Further, by providing a switch that can switch the detection signal of the human detection means between valid and invalid, the user can select whether to enable / disable the control of the blowing means by the human detection means. It is possible to provide an air purifier that is effective.

  Further, by providing a movable part, and providing the movable part with the human detection means, the position of the human detection means can be moved according to the installation location of the air cleaner body, and the user can It is possible to provide an air cleaner having an effect that the installation location can be set freely.

  Further, the presence or absence of a person can be accurately detected by detecting the direction of movement of the person, and a method of operating the air cleaner by controlling the blowing means according to the presence or absence of a person can be obtained.

  According to the first aspect of the present invention, an air inlet provided in the main body, a purifying means for cleaning dirty air sucked from the air inlet, a blower means for ventilating the purifying means, and a human operating direction are defined. A person detecting means for detecting, and a control means for controlling the operation of the air blowing means by a detection signal of the person detecting means, the person detecting means having a predetermined detection area, and a person passing through the predetermined detection area The control means controls the operation of the air blowing means by the detection signal of the operation direction, and can be provided with a person detection means without impairing the design, and the person can be detected by detecting the operation direction of the person. It is possible to accurately detect the presence / absence of air and to control the blowing means according to the presence / absence of a person.

  Further, the human detection means is provided so as to include a door of the room in a predetermined detection area of the human detection means, and the entrance / exit of the room can be detected by the detection signal of the person detection means, and the control means sends air according to the entrance / exit of the room The operation of the means is automatically controlled, and the person entering and exiting the room can be accurately detected, and the blower means can be automatically controlled according to the entry and exit of the room.

  In addition, the control means counts the detection result of entering / exiting the room based on the detection signal of the person detecting means, and can determine the number of people in the room, and can determine the number of people in the room. Has an effect.

  In addition, the control means can automatically control the operation of the blowing means according to the number of people in the room, and has the effect that the blowing means can be automatically controlled according to the number of people in the room. .

  In addition, a display unit for displaying the driving state is provided, and when the number of people in the room is zero based on the detection result of entering / exiting the room, the display unit is turned off and there is no person. In some cases, the display unit is turned off and power consumption can be reduced.

  Further, the apparatus includes a dirt detection means for detecting a dirt component in the air and a control means for judging a detection signal of the previous dirt detection means, and the control means has a predetermined threshold value for judging the detection signal of the dirt detection means. The threshold value is changed at the time of entering / exiting the room, and the sensitivity of the dirt detecting means can be automatically set individually when there is a person and when there is no person.

  In addition, the control means changes the threshold value for determining the detection signal of the dirt detection means according to the number of people in the room, and the sensitivity of the dirt detection means can be automatically set individually according to the number of people in the room. Has the effect of being able to.

  In addition, when the number of people in the room is zero according to the detection result of entering / exiting the room, the operation of the dirt detection means is made intermittent, and when there is no person in the room, the operation of the dirt detection means is made intermittent. The power consumption can be reduced.

  Further, when the dirt detecting means detects the dirt, the control means invalidates the detection signal of the person detecting means, and the dirt detecting means is more than the presence / absence of a person by the detection signal of the person detecting means. The air blowing means can be controlled with priority given to air contamination by the detection signal.

  In addition, a switch is provided that can switch the detection signal of the human detection means between valid and invalid, and the user can select whether to enable / disable the control of the blowing means by the human detection means. Has the effect of being able to.

  Also, a movable part is provided, and the movable part is provided with a human detection means, the position of the human detection means can be moved according to the installation location of the air cleaner body, and the user can move the air cleaner body. It has the effect that the installation location of can be set freely.

  In addition, a remote control is provided, and a human detection means is provided on the remote control, so that the user can freely set the installation location of the air purifier body, and the human detection means can also be installed freely It has the effect of being able to.

  In addition, a human sensor provided at the entrance of the room, a first boundary located on the outer side of the detection area of the human sensor, and a second boundary located on the near side of the room. If the person who has passed through the detection area from the first boundary side is detected, it is determined that the person has entered the room, and the person who has passed through the detection area from the second boundary side has been detected. In this case, it is determined that the person has left the room and the air cleaner is operated, and the presence or absence of a person is accurately detected by detecting the direction of movement of the person, and the air purifier is determined according to the presence or absence of the person. It has the effect of driving the machine.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIG. 1, the main body 1 of the air cleaner is formed in a substantially box shape, and an air inlet 2 is provided on a side surface of the main body 1. In the main body 1, there are a filter 4 as a purifying means for purifying the air, a fan motor 3 as a blowing means for ventilating the filter 4, and a control circuit 6 as a control means for controlling the fan motor 3. Provided on the front of the main body is a human sensor 5 as a human detection means for detecting a human movement direction by detecting a human movement direction.

  As shown in FIG. 2, the control circuit 6 includes a microcomputer 7, and the microcomputer 7 processes the detection signal of the human sensor 5 and controls the air volume of the fan motor 3.

  The human sensor 5 has a conical detection area 8 centered on the human sensor 5 as shown in FIGS. 3 (a) and 4 (a), and is emitted from a person entering and exiting the boundary portion. It detects infrared rays and outputs a sine wave detection signal shown in FIG.

  Further, the detection area 8 will be described in terms of a plane. The detection area 8 has an isosceles triangle shape having a first hypotenuse 14 as a first boundary and a second hypotenuse 15 as a second boundary. When a person enters or exits with the first hypotenuse as a boundary as shown in FIG. 3A, a sine wave is output from the plus side as shown in FIG. In addition, when a person enters or exits with the second hypotenuse as a boundary as shown in FIG. 4 (a), a sine wave is output from the minus side as shown in FIG. 4 (b). .

  The detection area 8 of the human sensor 5 has a narrow-angle detection characteristic with respect to a range where people in the room exist, and the main body 1 of the air cleaner is arranged with the detection area 8 facing the entrance of the room. To do. Further, the first hypotenuse 14 side is arranged on the side close to the outside of the room, and the second hypotenuse 15 side is arranged on the side close to the inside of the room.

  In the above configuration, when a person enters the room, the human sensor 5 outputs a detection signal according to the direction of movement of the person passing through the detection area 8. That is, when a person moves in a direction passing through the detection area 8 of the human sensor 5 from the first hypotenuse 14 side as shown in FIG. 3A, the human sensor 5 as shown in FIG. First, a sine wave from the plus side with respect to the reference potential is output as the detection signal. The microcomputer 7 performs arithmetic processing on the detection signal, detects that a person has entered the room, and controls the air volume of the fan motor 3 so that the air volume of the fan motor 3 is increased by one step from the middle notch to the rapid notch. To work.

  When the person leaves the room, the human sensor 5 outputs a detection signal according to the direction of movement of the person passing through the detection area 8. That is, when a person moves in a direction passing through the detection area 8 of the human sensor 5 from the second hypotenuse 15 side as shown in FIG. 4A, the human sensor 5 as shown in FIG. First, a sine wave from the negative side with respect to the reference potential is output as the detection signal. The microcomputer 7 performs arithmetic processing on this detection signal, and controls the air volume of the fan motor 3 to be lowered by one step from the middle notch to the weak notch.

  As described above, the first hypotenuse 14 is arranged outside the room, and the second hypotenuse 15 is arranged inside the room. Person can be judged. That is, since the human sensor 5 emits a detection signal even when a person entering the detection area 8 leaves the detection area 8, the detection signal on each side of the first hypotenuse 14 and the second hypotenuse 15 is identified. The human sensor 5 first detects after a predetermined time and detects the direction of movement of the person passing through the detection area 8 by a signal to easily determine whether the person enters or leaves the room. Can do. And an air cleaner can be operated according to a person's entrance state to a room.

  In this way, by using the human sensor 5 to detect a person passing through the detection area 8, it is not necessary to configure the detection area 8 to detect the entire room, and the detection area can be reduced as in the past. In order to ensure a wide range, for example, a human sensor is not provided by projecting a lens on the front surface of the air cleaner body, and a human detection means can be provided without impairing the design. And the presence or absence of a person can be detected accurately by detecting the direction of movement of the person, and the blowing means can be controlled according to the presence or absence of a person.

  In the first embodiment, as an example, the air volume control of the fan motor 3 is controlled by a middle notch for the reference air volume, and the control method is controlled by one step up / down. It may be up and down, and there is no difference in its effect.

  In addition, an example is shown in which the detection area 8 is entered when the detection area 8 is passed from the first hypotenuse 14 side and the exit is made when the detection area 8 is passed from the second hypotenuse 15 side. Even if it is configured to enter and leave the room when it passes through the detection area 8 in the opposite direction, there is no difference in its effect. Furthermore, according to the actual use state, it is possible to cope with the use of both by providing a switch for setting a pattern for determining whether to enter or leave the room in the direction passing through the detection area 8 in advance.

(Embodiment 2)
This embodiment is different from the first embodiment in the control method and more specifically shows the installation state of the main body 1 of the air cleaner. The same components are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 5 to 6, the human body sensor 5 is provided in the main body 1 so as to include a door of the room in the detection area 8 of the human sensor 5.

  In the above configuration, as shown in FIG. 5 and FIG. 6, the detection signal of the human sensor 5 outputs a different signal in accordance with the entry / exit of the room. When a person enters the room as shown in FIG. 5 (a), the detection signal of the human sensor 5 first outputs a sine wave from the plus side with respect to the reference potential as shown in FIG. 5 (b). Next, a sine wave from the negative side with respect to the reference potential is output. The microcomputer 7 performs an arithmetic process on the detection signal, determines that a person has entered the room, and controls the air volume of the fan motor 3 to increase from the middle notch to the rapid notch by one step. When a person leaves the room as shown in FIG. 6 (a), the detection signal of the human sensor 5 is first a sine wave from the negative side with respect to the reference potential as shown in FIG. 6 (b). Then, a sine wave from the positive side with respect to the reference potential is output. The microcomputer 7 performs an arithmetic process on the detection signal, determines that a person has left the room, and controls the air volume of the fan motor 3 to be lowered by one step from the middle notch to the weak notch. Further, as shown in FIG. 7, the microcomputer 7 determines the number of people in the room by continuously calculating the detection signal of the human sensor 5 continuously. Further, the microcomputer 7 controls the air volume of the fan motor 3 according to the number of people in the room. For example, if the number of people in the room is 0, the fan motor airflow is stopped. If the number of people in the room is 1, the fan motor airflow is weak notch. If the number of people in the room is 2, the fan motor airflow is medium notch. And control.

  Thus, the person entering / exiting the room can be accurately detected, and the blowing means can be automatically controlled according to the entry / exit of the room.

  Further, the number of people in the room can be determined, and the air blowing means can be automatically controlled according to the number of people in the room.

(Embodiment 3)
The present embodiment is different from the first or second embodiment only in the control method, and those having the same configuration are denoted by the same reference numerals and detailed description thereof is omitted.

  As shown in FIG. 8, a liquid crystal 9 as a display unit and a gas sensor 10 as a dirt detection unit are provided on the front of the main body 1. As shown in FIG. 9, the microcomputer 7 controls the display of the liquid crystal 9. Further, the microcomputer 7 controls the operation of the gas sensor 10 and calculates the detection signal of the gas sensor 10.

  The above configuration will be described with reference to FIG. When the microcomputer 7 calculates the detection signal of the human sensor 5 and the number of people in the room is 0, the microcomputer 7 turns off the display of the liquid crystal 9 and the microcomputer 7 calculates the detection signal of the human sensor 5. If the number of people in the room is one or more, the microcomputer 7 controls the display of the liquid crystal 9 to be lit. The description will be made with reference to FIG. When the microcomputer 7 computes the detection signal of the human sensor 5 and the number of people in the room is zero, the contamination judgment threshold value of the gas sensor 10 of the microcomputer 7 is set to the lowest sensitivity of four threshold values. The threshold value is as follows. When the microcomputer 7 computes the detection signal of the human sensor 5 and the number of people in the room is one, the contamination determination threshold of the gas sensor 10 included in the microcomputer 7 is set to 2 from the low sensitivity side of the four thresholds. The second threshold is used. When the microcomputer 7 computes the detection signal of the human sensor 5 and the number of people in the room is two, the contamination determination threshold value of the gas sensor 10 of the microcomputer 7 is set to 2 from the high sensitivity side of the four threshold values. The second threshold is used. The description will be made with reference to FIG. When the microcomputer 7 computes the detection signal of the human sensor 5 and the number of people in the room is zero, the microcomputer 7 sets the operation of the gas sensor 10 to intermittent operation (for example, duty 50%) and detects the human sensor 5. When the signal is processed by the microcomputer 7 and the number of people in the room is one or more, the microcomputer 7 controls the operation of the gas sensor 10 so as to continuously operate.

  In this way, when there is no person, the display unit is turned off, and the operation of the dirt detecting means can be made intermittent to reduce power consumption.

  In addition, the sensitivity of the dirt detection means can be automatically set individually depending on whether or not there is a person or the number of people in the room.

  In the third embodiment, the liquid crystal 9 is used as the display unit. However, an LED or 7 segments may be used, and there is no difference in operational effects.

  In the third embodiment, the gas sensor 10 is used as the dirt detection means for detecting the dirt component in the air. However, a dust sensor or a CO2 sensor may be used, and there is no difference in the operational effect.

  In the third embodiment, the stain determination threshold value is set to four levels, but it is sufficient that the threshold value has at least two levels, and there is no difference in the operational effect.

  In the third embodiment, the intermittent operation is set to the duty of 50%. However, if the intermittent operation is performed, the duty may be 20% or 80%, and the effect is not different.

(Embodiment 4)
The present embodiment is different from the first or second embodiment only in the control method, and those having the same configuration are denoted by the same reference numerals and detailed description thereof is omitted.

  As shown in FIG. 13, a human sensor switch 11 for switching the detection signal of the human sensor 5 between valid and invalid is provided on the top surface of the main body 1, and a slit is provided from the front surface of the main body 1 toward the right side surface. The movable part 12 is provided with a human sensor 5.

  The above configuration will be described with reference to FIG. As shown in FIG. 14, when the air purifier starts operation and the gas sensor 10 detects a dirt component in the air, the detection signal of the human sensor 5 is invalidated, and the microcomputer 7 of the control circuit 6 Operation control of the fan motor 3 is performed according to the dirt level detected by the gas sensor 10. When the gas sensor 10 does not detect a dirt component in the air, the detection signal of the human sensor 5 is validated. When the human sensor 5 detects a person, the microcomputer 7 The operation of the fan motor 3 is controlled according to the above, and when the human sensor 5 does not detect a person, the fan motor 3 is stopped. Further, as shown in FIG. 13, when the user turns on / off the human sensor switch 11, the detection signal of the human sensor 5 is switched between valid / invalid. The movable part 12 can move the slit from the front surface to the right side provided in the main body 1, and the human sensor 5 provided in the movable part 12 moves together with the movable part, so that the user moves the movable part 12 The detection area 8 of the human sensor 5 can be selected and installed by the user.

  Further, as shown in FIG. 15, a remote controller 13 is provided, and the human sensor 5 is provided on the remote controller 13.

  In the above configuration, the user can install the human sensor 5 provided in the remote controller 13 at an arbitrary place.

  In this way, the air blowing means can be controlled with priority given to air dirt by the detection signal of the dirt detecting means.

  In addition, the user can select whether to enable / disable the control of the air blowing means by the person detecting means.

  In addition, the user can freely set the installation location of the air purifier main body, and can also freely install the installation position of the human detection means.

  It can be used for air conditioners such as air conditioners, fan heaters, and humidifiers that change the control method depending on the presence or absence of people and the number of people in the room, as well as the number of people in and out of the room.

The block diagram of the air cleaner of Embodiment 1 of this invention Control block diagram of the air cleaner The figure explaining the motion sensor operation of the air cleaner ((a) The motion sensor detection area and the motion direction of the motion sensor, (b) The motion sensor detection signal and the fan motor airflow correlation diagram) The figure explaining the motion sensor operation of the air cleaner ((a) The motion sensor detection area and the motion direction of the motion sensor, (b) The motion sensor detection signal and the fan motor airflow correlation diagram) The figure explaining operation | movement of the human sensitive sensor of Embodiment 2 of this invention ((A) Correlation figure of the detection area of a human sensitive sensor and the door position of a room, (B) Detection of the human sensitive sensor when entering a room Correlation diagram of signal and fan motor airflow) The figure explaining the operation of the motion sensor of the air cleaner ((A) Correlation diagram of the detection area of the motion sensor and the door position of the room, (B) Detection signal of the motion sensor and the fan when leaving the room Correlation diagram of motor airflow) Correlation diagram of the number of people in the room and operating airflow with respect to the detection signal of the human sensor of the air cleaner Configuration diagram of Embodiment 3 of the present invention Control block diagram of the air cleaner Correlation diagram of the number of people in the room and the liquid crystal display with respect to the detection signal of the human sensor of the air cleaner Correlation diagram of the number of people in the room and the threshold of the gas sensor with respect to the detection signal of the human sensor of the air cleaner Correlation diagram of the number of people in the room and the operation of the gas sensor with respect to the detection signal of the human sensor of the air cleaner Configuration diagram of Embodiment 4 of the present invention Same flowchart Configuration diagram of the air purifier Appearance front view of conventional air purifier Enlarged view of the main part

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Air inlet 3 Fan motor 4 Filter 5 Human sensor 6 Control circuit 7 Microcomputer 8 Detection area 9 Liquid crystal 10 Gas sensor 11 Human sensor changeover switch 12 Movable part 13 Remote control

Claims (13)

An air inlet provided in the main body, a purifying means for cleaning dirty air sucked from the air inlet, a blower means for ventilating the purifying means, a person detecting means for detecting a person's movement direction, and the human detecting means Control means for controlling the operation of the blower means based on the detection signal of, wherein the human detection means has a predetermined detection area, and the control means is configured to detect the movement direction of the person passing through the predetermined detection area. An air cleaner characterized by controlling the operation of the blowing means. The person detecting means includes the person detecting means so as to include a door of the room in a predetermined detection area of the person detecting means, detects entry / exit of the room by a detection signal of the person detecting means, and the control means is configured to The air cleaner according to claim 1, wherein the operation is automatically controlled. 3. The air cleaner according to claim 2, wherein the control means counts the detection result of entering / exiting the room based on the detection signal of the person detecting means to determine the number of people in the room. The air cleaner according to claim 3, wherein the control means automatically controls the operation of the air blowing means in accordance with the number of people in the room. 5. The display unit according to claim 3, further comprising a display unit configured to display an operation state, wherein the display unit turns off the display when the number of people in the room is zero based on a detection result of entering / exiting the room. Air cleaner. A dirt detecting means for detecting a dirt component in the air, and a control means for judging a detection signal of the previous dirt detecting means, the control means having a predetermined threshold value for judging the detection signal of the dirt detecting means, The air purifier according to any one of claims 3 to 5, wherein the threshold value is changed at the time of detecting the entry / exit of the air. The air cleaner according to claim 6, wherein the control means changes a threshold value for determining a detection signal of the dirt detection means in accordance with the number of people in the room. 8. The air cleaner according to claim 6, wherein when the number of people in the room is zero based on the detection result of entering / exiting the room, the operation of the dirt detecting means is set to intermittent operation. The air cleaner according to any one of claims 6 to 8, wherein when the dirt detection means detects dirt, the control means invalidates the detection signal of the person detection means. The air cleaner according to any one of claims 1 to 9, further comprising a switch capable of switching a detection signal of the human detection means between valid and invalid. The air purifier according to any one of claims 1 to 10, further comprising a movable part, wherein the movable part is provided with a human detection means. The air cleaner according to any one of claims 1 to 10, further comprising a remote controller, wherein the remote controller is provided with a human detection means. A human sensor provided at the entrance of the room, a first boundary located on the outside of the room of the detection area of the human sensor, and a second boundary located on the near side of the room, When a person who has passed through the detection area from the first boundary side is detected, it is determined that the person has entered the room, and when a person who has passed through the detection area from the second boundary side is detected. A method of operating an air purifier by judging that the person has left the room.

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