JPH02245212A - Air cleaning machine - Google Patents

Abstract

PURPOSE:To clean air with good efficiency by detecting a direction where there is a person and turning a suction hole toward the direction with rotating means. CONSTITUTION:The air is sucked with a fan motor 21 from the suction hole arranged to a main body to clean the air with the cleaning means, and this cleaned air is blown from a blowing hole arranged to the main body to clean the inside of a room. Then, the person is detected by scanning inside of the room with a sensor 28 having directivity from the main body. Further, the above suction hole is turned to the direction where the person is detected with the sensor 28 through the rotating means 47. As a result, air can be cleaned with good efficiency.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention provides a system in which air is sucked in by a fan motor through an inlet provided in the main body, the air is purified by a purifying means, and the purified air is provided in the main body. The present invention relates to an air cleaner that blows air from an air outlet to clean a room.

(Prior Art) For example, an air cleaner shown in FIG. 9 has been known as an air cleaner for cleaning indoor air. In Figure 9, 1
Reference numeral denotes a suction port for sucking indoor air, and the air sucked through the suction port 1 passes through a filter (not shown), where it is purified and then blown through the ventilation port 2.

This air cleaner is uneconomical because it operates while the main switch 3 is on, regardless of the presence of people in the room. Therefore, as shown in Fig. 10, an infrared sensor 4 and a light condensing plate 5 are provided to detect whether or not there is a person in the room, so that the infrared sensor 4 is activated only when it detects a person. There is something I did.

Note that 5a is a plurality of condensing lenses provided on the condensing plate 5, which is designed so that the infrared sensor 4 can detect a person in a wide range of angle α so that the infrared sensor 4 can detect the person at any position in the room. This is what I did.

(Problem to be Solved by the Invention) However, in the above air purifier, the direction of the inlet for sucking indoor air is fixed in one direction regardless of the position of the person, so the inlet It is fine if the inlet is facing in the direction of people, but if the inlet is facing in another direction, it will clean the air in the direction where there are no people, so it is not good from the point of view of air purification efficiency. There was an aspect of inefficiency.

There is also a device that reciprocates the main body 4 by a predetermined angle to change the direction of the inlet port, but this also simply reciprocates by a predetermined angle regardless of the position of the person, so Since only the air in the direction of the air is cleaned, there is a problem in that it is inefficient in terms of air cleaning efficiency.

Furthermore, in the above air purifier, the rotation speed of the fan motor is constant regardless of the number of people in the room, so if there are many people in the room, the air in the room can be sufficiently purified. If the number of people is small or the number of people in the room is small, there are problems such as inhaling more air than necessary and cleaning the air unnecessarily.

(Purpose) This invention was made in view of the above problems, and its purpose is to efficiently clean the air by detecting the direction of a person and directing the intake port in that direction. Our goal is to provide an air purifier that can.

Another object of the present invention is to provide an air cleaner that can efficiently purify indoor air by changing the rotation speed of a fan motor depending on the number of people in the room.

(Means for solving problems) A fan motor draws air from the intake port provided on the main unit.

An air purifying device that cleans the air that is inhaled by a purifying means and blows the clean air from an air outlet provided in a main body to clean a room, the sensor detecting a person by scanning the room from the main body; The sensor is characterized in that it includes a rotating means for directing the suction port in the direction in which the sensor detects a human being.

Further, a detection means for detecting a direction in which there are many people from a detection signal outputted by the sensor is provided, and the rotation means directs the intake port in the direction detected by the detection means.

Further, the present invention is characterized in that a rotation control means is provided which detects the number of people in the room from the detection signal outputted by the sensor and increases the rotation speed of the fan motor as the detected number of people increases.

(Function) With the above configuration, when the sensor scans the room and detects a person, the rotating means directs the intake port in the direction in which the sensor detects the person.

Further, the detection means detects a direction in which there are many people from the detection signal output by the sensor, and the rotation means directs the inlet in the detected direction, and the rotation control means detects the direction in which there are many people from the detection signal output from the sensor. The number of people is detected, and the number of revolutions of the fan motor is increased as the number of people detected increases.

(Example) Hereinafter, an example of the air cleaning device according to the present invention will be described based on the drawings.

Fig. 1 is a front view of the air purifying device according to the present invention, Fig. 2 is a front view of the air cleaning device according to the present invention;
The figure is an exploded perspective view of the air purifying device. In the figure, 6 is a main body rotatably mounted on a lower stand 7. This main body 6 includes a front case 9 in which an air passage opening 8 serving as an inlet is formed. , is attached to the back of the front case 9 and has an air passage opening 10 at the top that serves as an air outlet for sending out purified air.
It is comprised of a rear case 10 in which a letter A is formed, and an upper case 11 attached to the upper part of the front case.

The upper case 11 includes a start button 12 to start the cleaning operation, a stop button 13 to stop the cleaning operation, and a scan button 15 to make the main body 6 swing.
and an infrared receiver 1 that receives infrared rays emitted from humans.
6, a remote control light receiving sensor 18 that receives a remote control signal emitted from a remote control device $117, which will be described later, and a light emitting diode 19 that flashes once.

Inside the main body 6 are a fan 20 for sucking indoor air from the air passage opening 8 of the front case 9, a fan motor 21 for rotating the fan 20, and a filter for cleaning the air taken in from the air passage opening 8. 22, a stepping motor 23 that rotates the main body 6 via a gear (not shown) built in the gear box 24, and a control board 25 provided with control circuits for performing various controls. 21, 23, a power supply board 27 equipped with a power transformer 26, etc. for supplying power to the control circuit.

The infrared light receiving section 16 provided in the upper case 11 has a third
As shown in the figure, the infrared sensor 28 and the infrared sensor 2
For example, it consists of a black acrylic resin plate 29 provided in front of B, and a slit 30 is formed in this acrylic resin plate 29. As a result, the infrared sensor 28 detects only infrared light incident from one direction, and has directivity. The detection direction is matched with the direction of the air passage opening 8.

FIG. 4 is a control circuit diagram showing the configuration of a control circuit provided on the control board 25. In FIG.
2 is the voltage of the light reception signal amplified by the amplification@41 and the resistance R1
, R, and outputs a detection signal indicating that a human being has been detected when the voltage of the light reception signal exceeds the reference voltage.

43 is a decoder that converts the light reception signal output by the remote control light reception sensor 18 into a command signal emitted from the remote control device 17. This decoder is used to send a signal to the OR circuit 44 when the converted command signal is a scan command signal. A command signal is output to the OR circuit 45 when the signal is a start command signal, and a command signal is output to the OR circuit 48 when the command signal is a start command signal.

47 is a light emitting diode 1 in response to each command signal and detection signal.
9. Fan motor 21. Stepping motor 23 etc.
This control device 47 outputs a swing signal from terminal A to cause swinging, and outputs a swing signal from terminal A to terminals 81 to B.
A stepping signal for rotating the stepping motor 23 is output from m, a lighting/flashing signal for lighting/blinking the light emitting diode 19 is output from the output terminal C, and a rotation control for controlling the rotational speed of the fan motor 21 from the output terminal C. It is designed to output a signal.

In addition, the control device 47 detects the direction in which people are present from the detection signal output from the comparator 42 and the output stepping signal, and also detects whether there are many or few people and performs the above-mentioned detection. The directions are stored in a built-in memory (not shown).

That is, the control device 47 has a function as a rotation control means for controlling the rotation speed of the fan motor 21, and a function as a detection means for detecting the direction in which there are many people.

E is the reset terminal, F is the power supply terminal, G is the ground terminal, 48
．． 49 is an amplifier, and 50 is a D/D converter that converts the digital rotation control signal output from the output terminal into an analog control signal.
It is an A converter.

FIG. 5 is a circuit diagram showing the configuration of the remote control device 17, in which 51 is a start button, 52 is a stop button, and 53 is a stop button.
is the scan button, 54 is each button 51 to 53
The infrared remote control transmitting IC 155, which converts and outputs a command signal corresponding to each button 51 to 53 when pressed, is an infrared light emitting diode that receives the command signal and emits infrared light according to the command signal. be.

Next, regarding the operation of the air purifying device of the above embodiment,
This will be explained with reference to the flowchart shown in FIG.

When the main switch (not shown) is pressed, the control device 47
Follow the flow in Figure 6! 1111II operation is performed.

In step 1, the memory etc. are initialized, and in step 2, it is determined whether or not the start button 12 has been pressed. If no, the process returns to step 2, and if YES, the process proceeds to step 3. The output terminal A operates the fan motor 21 by outputting a rotation control signal from the terminal A.

A swing signal and a stepping signal are outputted from B+=Bm to operate the stepping motor 23, and a blinking signal is outputted from the output terminal C to make the light emitting diode 19 blink.

That is, the main body 6 is oscillated by the operation of the stepping motor 23, indoor air is sucked in from the air passage opening 8 by the rotation of the fan motor 21, and the sucked air is cleaned by the filter 22 and blown from the air passage opening 10a. Ru. On the other hand, as the main body 6 rotates, the infrared sensor 28 scans the interior of the room.

In step 4, it is determined whether or not the stop button 13 has been pressed, and if yes, the operation of the fan motor 21 and the swinging operation are stopped, and the light emitting diode 19 is
Go to step 14 to turn off the light, and if no, go to step 5. In step 5, it is determined whether or not the detection signal is output from the comparator 42, that is, whether there is a person in the room. If yes, proceed to step 13; if YES, proceed to step 6. In step 6, the swinging motion is stopped and the light emitting diode 19 is turned on.

By the way, since the detection direction of the infrared sensor 28 and the direction of the air duct opening 8 match, the direction of the air duct opening 8 and the direction where the person is located match, and the swinging motion of the main body 6 is stopped. Become. Therefore, the air in the direction of one person is inhaled, and cigarette smoke and dust are inhaled together with that air.Then, the smoke and dust are removed by the filter 22, and clean air is blown from the air duct IQa, making it more efficient. The air will be well purified.

In step 7, it is determined whether or not the stop button 13 has been pressed. If yes, proceed to step 14; if no, proceed to step 8. In step 8, it is determined whether or not the person has moved, and if yes, proceed to step 8. If so, the process returns to step 3, and the user swings the head again to scan the room with the infrared sensor 28 and direct the air passage opening 8 in the direction where the person is.

That is, when a person moves, the air path 8 is directed in the direction in which the person moves.

If no in step 8, the process advances to step 9, where it is determined whether or not the scan button 15 has been pressed.If no, the process returns to step 7, and the process continues until either the stop button 13 or the scan button 15 is pressed. , 8.9 are repeated.

When the answer is YES, the process proceeds to step IO, in which the main body 6 is oscillated and the light emitting diode 19 is turned off. That is, scan button 15
When is pressed once, the swinging motion starts.

In state 11, it is determined whether or not the stop button 13 has been pressed.If yes, proceed to step 14; if no, proceed to step 12.In step 12, it is determined whether the scan button 12 has been pressed twice or not. If no, the process returns to step 11 and the operations of steps 11 and 12 are repeated until the scan button 15 or stop button 13 is pressed. Therefore, the scan button 15 is pressed twice. The swinging motion of the main body 6 is repeated until the end or the stop button 13 is pressed.

In step 13, it is determined whether the scan button ] 3 has been pressed once, and if no, the process returns to step 4, and the operations of steps 4, 5.13 are repeated until the stop button 13 or scan button 15 is pressed. It will be done. That is, until the infrared sensor 28 detects a person or the scan button 15 is pressed,
The swinging motion of the main body 6 is repeated.

If the answer is yes in step 13, step 15 turns off the light emitting diode 19 that was blinked in step 3.
In step 16, it is determined whether or not the stop button 13 has been pressed. If yes, the process returns to step 14; if no, the process proceeds to step 17.
Then, it is determined whether or not the scan button 15 has been pressed twice. If no, the process returns to step 16 and the operations of steps 16 and 17 are repeated until either the stop button 13 or the scan button 15 is pressed.

When the scan button 15 is pressed twice, that is, when the determination in step 17 is YES, the process proceeds to step 18 in which the swinging motion of the main body 6 is stopped.

In step 19, it is determined whether or not the stop button 13 has been pressed, and if yes, the process returns to step 14.
If no, proceed to step 20.

In step 20, it is determined whether the scan button 15 has been pressed three times, and if no, the process returns to step 19.
If the answer is yes, return to step 3.

That is, in this flow, when the start button 12 is pressed, the main body 6 is swung, the infrared sensor 28 scans the room, and when a person is detected,
The swinging motion of the main body 6 is stopped and the fan motor 21 continues to rotate at that position, and when the person moves, the swinging motion of the main body 6 is performed again and the infrared sensor 28 scans the room. It directs the air passage opening 8 in the direction in which the person has moved.・When the scan button 15 is pressed once, it starts the swinging motion, when it is pressed twice, it stops the swinging motion, and when it is pushed a third time, the swinging motion is stopped. An automatic mode is set in which the infrared sensor 2B scans and directs the air duct opening 8 in the direction of the person.

The light emitting diode 19 blinks when the infrared sensor 28 is scanning to detect a person, and lights up when the air passage opening 8 faces in the direction of the person and the swinging motion of the main body 6 is stopped. The light is simply turned off when the main body 6 is swinging.

In FIG. 7, a grounded capacitor C is connected to the output terminal of the comparator 42. This prevents the stepping motor 23 from malfunctioning due to noise when the fan motor 21 and the stepping motor 23 are used at the same time. It is something.

Next, a second embodiment will be described with reference to the flowchart shown in FIG.

In FIG. 8, initial settings are performed in step 40,
In step 41, it is determined whether or not the start button 12 has been pressed. If no, the process returns to step 41, and if YES, the process proceeds to step 42, where it is determined whether or not the stop button 13 has been pressed. And stop button 1
If 3 is pressed, the process advances to step 51, and if it is not pressed, the process advances to step 43. In step 43, a swing signal and a stepping signal are output from output terminals B+ to B3 to operate the stepping motor 23, and output - Output a blinking stop signal from child C to make the light emitting diode 19 blink.

That is, in step 43, the main body 6 is rotated,
The room is scanned by the infrared sensor 28.

In step 44, it is determined whether there is a person, if no, proceed to step 50, if yes, step 4
Proceed to step 5, in step 45, compare! The time during which one detection signal continues to be outputted from I42 is counted, the detection direction is calculated, and the counted number and the detection direction are stored. In step 46, it is determined whether the main body 6 has rotated once, and if no, the process returns to step 44.
If YES, the process proceeds to step 47, in which the operations of steps 44 to 46 are repeated until the main body 6 rotates once.

In step 47, while the main body 6 rotates once, the comparator 42
The longest output time of the detection signal outputted from is determined, and the direction corresponding to 1/2 of the longest time is determined. Then, in step 48, the rotation speed corresponds to the longest time (the number of rotations is increased according to the length of time)
The fan motor 21 is rotated, and the main body 6 is swung by a predetermined angle with the determined direction as the center position.

This is to increase the number of revolutions of the fan motor 21 according to the number of people in the room to purify the indoor air.

In step 49, it is determined whether or not there has been any movement of a person within a predetermined time, and if no, the process returns to step 42 and the above operations are repeated. If yes, return to step 49.

If the determination in step 44 is NO, the process proceeds to step 50, where it is determined whether or not the main body 6 has rotated once. If NO, the process returns to step 44, and if YES, the process proceeds to step 51.

That is, the loop of steps 44 and 50 continues until a person is detected or the main body 6 makes one revolution.

In step 51, since no person is detected even after the main body 6 rotates once, the swinging motion of the main body 6 performed in step 43 is stopped, and the blinking light emitting diode 19 is turned off. Return to

In this flow, the main body 6 is rotated by ¥i with the direction corresponding to the longest output time of 17.2 of the detection number 48 output from the comparator 42 as the center position, and the rotation according to the longest time. The fan motor 21 is rotated at a certain speed, and if there is no movement of the person within a predetermined time period, these operations are repeated.

In the above embodiment, the filter 22 is used to purify the air, but the filter 22 is not limited to this. For example, the filter 22 may be used to remove smoke and dust using ions generated by high voltage. Although an infrared sensor is used for this purpose, other sensors may be used.

Further, in the above embodiment, it is determined that a person is present when the light reception signal voltage output from the infrared sensor 28 is equal to or higher than the reference voltage, but the upper and lower limits are determined and the determination is made that the person is present only when the light reception signal is within the range. By doing so, it is possible to prevent a heating device such as a stove from being judged as a person.

In the above embodiment, the main body 6 is rotated, but the infrared sensor 28 and the inlet (air passage opening) may be rotated without rotating the main body 6.

(Effects) This invention uses a fan motor to suck in air through an inlet provided in the main body, cleans the air with a purifier, and blows the purified air through an air outlet provided in the main body to clean the room. The air purifier is equipped with a directional sensor that scans the room from the main body to detect a person, and a rotating means that directs the inlet in the direction in which the sensor detects a person. It is possible to detect the direction in which air is coming from and direct the inlet in that direction, making it possible to efficiently clean the air.

Further, a detection means is provided for detecting a direction in which there are many people based on a detection signal outputted by the sensor, and the rotation means is for directing the inlet in the direction detected by the detection means, so that the inlet is not in contact with the person. Since it is possible to inhale air from a direction where there is a lot of air, indoor air can be efficiently purified.

In addition, since the fan motor is equipped with a rotation control means that detects the number of people in the room from the detection signal output by the sensor and increases the rotation speed of the fan motor as the detected number of people increases, The means detects the number of people in the room from the detection signal output by the sensor, and increases the number of revolutions of the fan motor as the number of people detected increases, so that the air in the room can be efficiently purified. .

[Brief explanation of drawings]

Figure 1 is a perspective view of the air cleaner according to the present invention, Figure 2 is an exploded perspective view of the air cleaner, Figure 3 is an explanatory diagram of the infrared sensor, and Figure 4 is the configuration of the control system of the air cleaner. Fig. 5 is a control circuit diagram showing the configuration of the remote control device; Fig. 6 is a circuit diagram showing the configuration of the remote control device;
The figure is a flow diagram showing the operation of the first embodiment, and FIG.
An explanatory diagram of the circuit diagram of the embodiment, FIG. 8 is a flow diagram showing the operation of the second embodiment, FIG. 9 is a perspective view of a conventional air cleaner,
FIG. 10 is an explanatory diagram of a conventional infrared sensor. 6... Main body, 8... Air duct opening (intake port), 10a... Air duct opening (ventilation opening), 14... Infrared sensor, 21... Fan motor, 22... Filter (cleaner) means), 47...control vL position (rotation means, detection means 1 rotation control means) un]

Claims (3)

[Claims] (1) In an air purifier that sucks air through a suction port provided on the main body using a fan motor, cleans the air with a purifying means, and blows the purified air through a ventilation port provided on the main body to purify the room, An air purifier comprising: a sensor having directivity that scans a room from the main body to detect a person; and a rotating means that directs the intake port in the direction of the person detected by the sensor. (2) A detection means for detecting a direction in which there are many people from a detection signal output by the sensor is provided, and the rotation means directs the intake port in the direction detected by the detection means. The air purifier described in item 1. (3) A claim characterized in that rotation control means is provided for detecting the number of people in the room from the detection signal output by the sensor and increasing the rotation speed of the fan motor as the detected number of people increases. The air purifier according to item 1 or 2.