JPH11114346A - Operation controller for air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save energy and make effective the separated smoking measures by appropriately matching the air suction range of an air cleaner with the person detection range and surely removing cigarette smoke by automatic operation of the air purifier installed in a smoking area. SOLUTION: In this controller, a person sensor 18 detects someone being within a suspended dust suction enabling range 22 of an air purifier 11 and a control circuit receives a detection signal of the person sensor 18 to start the air cleaner 11 and perform air purification. Therefore, in contrast to the case in which when the person sensor detects the presence or motion of even someone outside the suction enabling range of the air cleaner as before, the air cleaner is started, only a smoker actually coming near the air cleaner 11 and being about to smoke is surely detected to start the air cleaner and perform air purification, allowing vain starting to be lessened to contrive saving energy, and if necessary, the air cleaner is surely operated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control device of an air purifier for automatically operating an air purifier for purifying air by sucking and removing floating dust such as cigarette smoke.

[0002]

2. Description of the Related Art In recent years, guidelines for measures to control smoking in the workplace have been published by the Environment Improvement Office of the Ministry of Health and Safety at the Ministry of Labor. In order to be able to work in a friendly relationship, a smoking area is provided, especially for smokers, and anti-smoking equipment is installed in the area to absorb and remove smoke from cigarettes and smoke exhaled by smokers. It is advisable to take measures to prevent secondhand smoke by preventing smoke from spreading out of the smoking area (space separation).

[0003] As one of anti-smoking devices effective for such a space smoking, there is a device for inhaling tobacco smoke before it diffuses and discharging it to the outside, and a device for inhaling and removing tobacco smoke to purify purified air. There is an air purifier that returns the indoors.

[0004] In the case of this air purifier, it is required that a smoking section is provided in the workplace and installed in the section, and that the smoker comes to the smoking section, activates the air purifier, and smokes. Therefore, if a rule is set for a workplace where smokers can smoke whenever they come to the smoking section, it is necessary to keep the air purifier installed in the smoking section always running.

[0005] However, smokers do not always come to the smoking room and smoke, and the time when no one is there is longer. In such an environment, constantly operating the air purifier is not preferable for energy saving measures.

[0006] Conventionally, in order to prevent such smoke separation in the space,
A proposal has been made for an air purifier installed in a smoking room to detect and activate a smoker only when the smoker approaches the air purifier, thereby purifying tobacco smoke.
FIGS. 27 and 28 show a conventional example of the air purifier 1 having such an automatic operation function. This conventional air purifier 1 is of a counter type that allows a smoker to smoke while standing, or a table type that allows a smoker to smoke while sitting on a chair. The air suction port 3 is provided on the upper surface side of the table 2. In addition, a human sensor 4 for detecting the approach of a person to the side of the main body below the table 2 is attached. When a person approaches the air purifier 1, the human sensor 4 detects the person and activates the air purifier 1, and stops when the person is no longer detected.

[0007] Conventionally, as an operation control device of an air purifier, airborne dust in the air near the air purifier is monitored by an air dirt sensor, and when a predetermined level of dirt is detected, the air purifier is started and the air purifier is started. There is also known a system that stops when the inside dirt is cleaned to a predetermined level or less. Further, a sensor using both a human sensor and a dirt sensor is known.

[0008]

In such a conventional air purifier for countermeasures for smoke separation, when a person approaches the air purifier, the operation is turned on / off by detecting it.
There is an advantage that effective energy saving can be achieved as compared with a constantly operating one. However, there were the following problems.

As shown in FIGS. 27 and 28, in a conventional operation control device for an air purifier, the detection range of the human sensor 4 is left to the detectable range of the human sensor itself, and the range is controlled. Smoking area A
Air purifier 1 detecting indiscriminately even if person B moves outside
Is started, the useless operation time of the air purifier 1 is lengthened, and the number of times of ON / OFF is increased, and further improvement is required in terms of energy saving measures. In the case of the operation control device of the conventional air purifier, if the human sensor stops detecting a person, the operation is stopped, so that the smoke remaining after the smoker has left remains unpurified, resulting in insufficient air purification. There was also a problem.

[0010] In an air purifier operation control device for turning on / off an air purifier by detecting dirt in the air using a dirt sensor, especially when used as a device for removing smoke from cigarettes, a fire is applied to the cigarettes. It operates by detecting the smoke that the smoker inhales, exhales, and then drifts around the air purifier, until the smoke is generated and the air purifier starts up and removes it. There is a problem that the time lag is long, and the smoke spreads out of the smoking area.

Further, in the case of an operation control device for an air purifier using both a human sensor and a dirt sensor, it is inevitable that the cost of sensors and a control circuit based on the signals is unavoidable, and the human sensor is an air purifier. However, there is a problem that it is impossible to solve the problem of detecting and operating a person who is out of the range in which the suction can be performed.

The present invention has been made in view of such a conventional problem, and detects only a person who comes near an air purifier and intends to smoke, and activates the air purifier, thereby causing unnecessary activation. An object of the present invention is to provide an operation control device of an air purifier that can be avoided and energy saving can be improved.

[0013] The present invention also provides a method of completely purifying smoke by keeping the air purifier on for a while even after the smoker has left the smoking area, which is effective in separating smoke at work. It is an object to provide an operation control device for a purifier.

[0014]

According to a first aspect of the present invention, there is provided an operation control apparatus for an air purifier for automatically operating an air purifier for sucking and removing floating dust by detecting a person approaching the air purifier. In the, comprising a motion sensor that detects a person installed in a suitable place of the air purifier, an operation control circuit that starts the air purifier in response to a detection signal of the motion sensor, the motion sensor The detection ability is substantially matched to the range in which the air cleaner can suck the suspended dust.

In the operation control device for an air purifier according to the first aspect of the present invention, the motion sensor detects a person who is within a range in which the air cleaner can suck floating dust, and the operation control circuit detects the detection signal of the motion sensor. In response to this, the air purifier is activated to purify the air. Therefore, even if a person outside the suctionable range of the air purifier detects the presence or movement of the human sensor as in the related art, the person actually comes closer to the air purifier than when the air purifier is started. Detects only smokers who try to smoke, activates the air purifier, cleans the air, reduces unnecessary start-ups, saves energy, and ensures that the air purifier is used when necessary. To work.

According to a second aspect of the present invention, in the operation control device for an air purifier of the first aspect, the floor projection surface of the air duster in the range where the floating dust can be sucked is equidistant from the periphery of the air cleaner. In addition, the detection range of the human sensor is set so as to substantially coincide with the floor projection surface of the range in which the floating dust can be suctioned by the air purifier.

Normally, when an air purifier is installed by setting a smoking area in the workplace to prevent smoking, the smoker tends to smoke at an arbitrary position around the air purifier. Like the operation control device of an air purifier, by matching the detection range of the human sensor with the floating dust suctionable range that is equidistant from the air purifier, any position around the air purifier can be used. Even if a person smokes, the smoker is automatically detected and the air purifier is activated, so that the smoke of the tobacco can be sucked and cleaned.

According to a third aspect of the present invention, in the operation control device for an air purifier of the first or second aspect, the operation control circuit operates the air purifier for a predetermined set time in response to a detection signal of the motion sensor. It is something to drive.

In the operation control device for an air purifier according to the third aspect of the present invention, when the human sensor detects a person within the suctionable range of the air purifier, the air purifier is operated for a predetermined time. Therefore, even after the last person leaves the air purifier and the motion sensor no longer detects a person within the suctionable range,
The air purifier is operated continuously for the set time to purify the remaining smoke, and the smoke separation measures are made more effective.

According to a fourth aspect of the present invention, in the operation control device for an air purifier according to any one of the first to third aspects, the air purifier is a counter type or a table type having an air suction port provided on a table upper surface. The sensor is installed facing down,
The air purifier detects a person who has entered the boundary of the floor projection surface within the range in which the floating dust can be sucked, and thereby, when a person approaches the air purifier for smoking, the lower limb of the person is sensed. The air purifier is operated by detecting the sensor, and only the person approaching the air purifier and trying to smoke is reliably detected and the air purifier is automatically operated.

According to a fifth aspect of the present invention, in the operation control device for an air purifier of the fourth aspect, the human sensor covers the entire surface of the floor projection surface within a range where the air cleaner can suck floating dust. The air purifier is installed at a plurality of locations of the air purifier, whereby the smoker is detected and the air purifier is automatically operated even if a smoker is present at any position within the suctionable range of the air purifier.

According to a sixth aspect of the present invention, in the operation control device for an air purifier according to the fifth aspect, the motion sensor is a pyroelectric infrared sensor, and is installed downward at two locations on a diagonal line of the table. Which allows the air purifier to be smoked with a minimum number of motion sensors.
The system detects a person at any position at 60 degrees and automatically drives.

According to a seventh aspect of the present invention, in the operation control device for an air purifier of the first aspect, the floor projection surface of the air duster in a range where the floating dust can be sucked is unequal from the periphery of the air cleaner. In this case, the detection range of the motion sensor is set to a range equidistant from the periphery of the air cleaner, and a distance substantially equal to the farthest distance from the air cleaner in the floor projection surface of the floating dust suctionable range. It is set in the range.

According to a seventh aspect of the present invention, in the operation control device for an air purifier, when the floor projection surface of the air purifier in a range where the floating dust can be sucked is unequal distance from the periphery of the air purifier,
Since the detection range of the human sensor was set to a range equidistant from the surroundings of the air purifier, and set to a distance range that almost coincides with the farthest distance from the air purifier on the floor projection surface of the floating dust suctionable range, When an air purifier is installed near a wall such that the side having the longest suctionable distance is located on the opposite side of the wall, the air purifier can efficiently inhale and purify tobacco smoke.

According to an eighth aspect of the present invention, in the operation control device for an air purifier of the seventh aspect, the operation control circuit operates the air purifier for a predetermined set time in response to a detection signal of the motion sensor. When the motion sensor detects a person within the suctionable range of the air purifier, the air purifier is operated for a predetermined set time, so that the last person is separated from the air purifier and the motion sensor is moved. Even after the detection of a person within the suctionable range is stopped, the air purifier is continuously operated for a set time to purify the remaining smoke, thereby making the smoke separation measure more effective.

According to a ninth aspect of the present invention, in the operation control device for an air purifier of the seventh or eighth aspect, the air purifier is a counter type or a table type having an air suction port provided on a table upper surface. A sense sensor is installed facing downward to detect a person who has entered the boundary of the floor projection surface of the air duster in the area where the floating dust can be sucked, and thereby, when a person approaches the air cleaner when trying to smoke. The human sensor detects the lower limb of the person and activates the air purifier, so that only the person approaching the air purifier and trying to smoke is reliably detected and the air purifier is automatically operated.

According to a tenth aspect of the present invention, in the operation control device for an air purifier of the ninth aspect, the human sensor covers the entire surface of the floor projection surface in a range where the floating dust of the air purifier can be sucked. The air purifier is installed at a plurality of locations of the air purifier, whereby the smoker is detected and the air purifier is automatically operated even if the smoker is located at any position within the suctionable range of the air purifier.

According to an eleventh aspect of the present invention, in the operation control device for an air purifier of the tenth aspect, the human sensor is a pyroelectric infrared sensor, and is installed downward at two locations on a diagonal line of the table. Thus, a person present at any position in the air cleaner for 360 degrees is detected for smoking by the minimum number of human sensors and automatic operation is performed.

According to a twelfth aspect of the present invention, in the operation control device for an air purifier of the first aspect, the operation is started when the output of the detection signal from the human sensor is interrupted, and is reset when the detection signal is output again. A timer is provided, and when the timer counts up, the operation of the air purifier is stopped.

According to a thirteenth aspect of the present invention, in the operation control device for an air purifier of the twelfth aspect, the set time of the timer is set between 1 minute and 10 minutes.

According to a fourteenth aspect of the present invention, in the operation control device for an air purifier of the thirteenth aspect, the set time of the timer is set between 3 minutes and 7 minutes.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 4 to 8 show a table type air cleaner 11 according to a first embodiment of the present invention, and FIG. 1 shows a functional configuration of the operation control device.

As shown in FIG. 4 to FIG.
Sucks air from an air suction dome 12 formed at the center of the upper surface of the table 13 and removes floating dust in the air sucked by a purifier unit (not shown) provided in the main body 14 to perform cleaning. Body 14
And blows out from the lower part of the device, and various types widely used conventionally are used. The air purifier 11 has a smoking area as a part of a smoking countermeasure, particularly in offices, cafeterias, corridors, and the like, and a smoker is required to come into the smoking area and set a rule to smoke. Install and use in a section.

As shown in FIG. 4, the air purifier 11 is provided with an on / off switch 15 as a main switch, an automatic / manual changeover switch 16 and a high / low changeover switch / display section 17, and is provided with an automatic / automatic changeover switch. When the manual changeover switch 16 is switched to the manual side, the air purifier 11 can be operated by turning on the on / off switch 15 and turning on the power. In the case where the air purifier 11 is switched to the automatic side, the air purifier 11 can be automatically operated when the human sensor 18 described later detects a person while the on / off switch 15 is turned on. The high / low switch / display section 17 sets high / low switching of the air suction amount of the air purifier 11 and turns on a high / low lamp during operation of the air purifier 11 to turn on / off the high / low lamp. It is used to indicate which one is driving.

The motion sensor 18 is a pyroelectric infrared sensor,
The sensor is not particularly limited as long as it is a sensor that detects a person, such as an ultrasonic sensor and a reflected light detection type sensor. In this embodiment, a pyroelectric infrared sensor is used. This pyroelectric infrared sensor focuses infrared light received on the entire surface of a hemispherical infrared light receiving portion on a photoelectric conversion element, converts the infrared light into a voltage signal corresponding to the amount of received light, and has a differential value of a voltage output. This is a method in which a human detection signal is output when the value exceeds a threshold. Therefore, when a person enters the detection range 21 described later,
In addition, when a person moves or moves within the detection range, the amount of infrared light radiated from the person changes and the person is detected.

The human sensor 18 composed of the pyroelectric infrared sensor is installed downward at the center of the lower surface of the table 13 on the long side. As shown in FIGS. 9 to 11, the detection range 21 of the human sensor 18 is adjusted to a range substantially coincident with the floor projection surface of the floating dust suctionable range 22 of the air cleaner 11. However, in the case of the first embodiment, the air purifier 11 also has a suctionable range on the short side of the air suction dome 12, but the human sensor 18 is
Since it is installed at the center of the long side 3, the dead area 23 is formed on the short side. If the detection range of the human sensor 18 is indicated by a numeral, it depends on the suction capacity of the air purifier 11, but is, for example, within a range of about 2 m around the table 13. In order to detect only a person approaching the inside of the limited detection range 21 and a person existing within the range, the human sensor 18 is mounted at a height of about 1 m from the floor and downward.

Now, as shown in FIG. 12 and FIG. 13, persons Ma, M who merely pass near the air cleaner 11 will be described.
c and the person Mb who approaches the air purifier 11 to smoke tobacco is distinguished, and the person Ma and Mc who simply pass the detection range in the related art are used in this embodiment. The sense sensor 18 does not operate and the air purifier 11
The infrared ray radiated from the lower limb of the person approaching within the detection range 21 of FIG.

Next, a control function of the operation control device according to the first embodiment of the present invention will be described. FIG. 1 is a circuit block diagram of an operation control device incorporated in the air cleaner 11. An infrared light receiving unit 31 that receives infrared light from the surroundings, photoelectrically converts the received light into a voltage corresponding to the amount of received light, and outputs the voltage; an amplification circuit 32 that amplifies a voltage signal output from the infrared light reception unit 31; A detection circuit 33 that differentiates the output and outputs a human detection signal when a change equal to or greater than a predetermined threshold is detected.

The detection circuit 33 is reset in response to a human detection signal, and starts time counting in response to a human non-detection signal. When a predetermined time, for example, a set time of 2 minutes or 5 minutes, elapses. Timer 34
And an operation unit 35 for inputting various operation commands, and a control circuit 36. The control circuit 36 turns on / off the high-voltage power supply to the air purifier unit 37 based on the signal of the operation unit 35, the signal of the detection circuit 33, and the signal of the timer 34 according to the logic of the flowchart of FIG.
An on / off signal for the off and fan is output, and an on / off signal for operation display is output to the display unit 38.

The infrared light receiving section 31, the amplifying circuit 32, and the detecting circuit 33 constitute the human sensor 18, and the operation section 35 includes the above-described on / off switch 15, automatic / manual switch 16, and high / low switch. 17 inclusive.

Next, the operation of the operation control device for an air purifier having the above configuration will be described with reference to the flowchart of FIG. In the present embodiment, it is assumed that the timer 34 is set to 5 minutes, and that the automatic / manual changeover switch 1
6 is described as being set to automatic operation.

As shown in the flow chart of FIG. 2, when the power is turned on by the on / off switch 15 of the operation unit 35, when the automatic / manual operation changeover switch 16 is set to automatic, the control circuit 36 controls the automatic operation control. Is started (steps S1 and S2).

The automatic operation control routine is repeated at predetermined intervals, and when a person enters the detection range 21 of the human sensor 18 of the air purifier 11, the infrared light receiving section 31 of the human sensor 18 What has detected background infrared light when no person is present receives infrared light radiated from the lower limbs of the person due to the approach of the person, the amount of light received changes, and the output voltage changes. Therefore, the differential value of the received light voltage signal amplified by the amplifier 32 becomes larger than the threshold value, and the detection circuit 33 outputs a human detection signal. A person who starts smoking near the air purifier 11 does not stay still during smoking, but slightly moves his or her body to the right or left, crosses his legs, or moves. Since the amount of infrared light received by the infrared light receiving unit 31 changes when the person moves as described above, the detection circuit 33 repeatedly outputs a person detection signal in each detection operation cycle (step S3).

When the detection circuit 33 outputs a human detection signal,
The timer 34 is reset, and the control circuit 36 starts the air purifier 11 (steps S3 to S5). In this case, if the control circuit 36 receives information that the on / off switch 15 is turned on from the operation unit 35 and the automatic / manual operation changeover switch 16 is set to automatic, the detection circuit 3
When a human detection signal is received from 3, a start signal is output to the air purifier unit 37, and an operation display signal is output to the display unit 38. Thus, the air cleaner 11 is automatically started by the first human detection.

After the air purifier 11 is once activated, the human detection operation is periodically repeated (step S6), and while the human sensor 18 detects a human and the detection circuit 33 continues to output a detection signal, , The timer 34 is reset for each detection cycle, and the operation of the air purifier 11 is continued (step S
4, S5).

When a person moves away from the air purifier 11 or stops moving, the detection circuit 33 outputs an undetected signal in step S6, and the timer 34 starts time counting for a predetermined set time. (Step S
7). Then, the operation of the air purifier 11 is continued until the time is up even during the time counting, and the human detection is periodically repeated (steps S8, S5, S6).

Even after the detection is once stopped (step S
If a person is detected again before the timer 34 has timed out (branched to NO in step S8), the process branches to YES again when it comes to step S6.
The timer 34 is reset (Step S4). Then, the air purifier 11 periodically repeats the human detection while operating continuously (steps S5 and S6).

When the person leaves the air purifier 11, the process proceeds to step S
6, the detection circuit 33 outputs an undetected signal,
When the timer 34 times out (Y in step S8)
(Branch to ES) and stop the operation of the air purifier 11 (step S9). Thereafter, the process returns to step S3 to repeat the human detection periodically.

The specific operation of the operation control device of the air purifier performing the above operation will be described with reference to the timing chart of FIG. It is assumed that the power is turned on by the on / off switch 15 provided on the main body 14 of the air purifier 11 at the timing t0. In that case, the timing t
When a person approaches the air cleaner 11 within the detection range 21, the human sensor 18 detects the approach of the person and the air cleaner 11 is automatically activated.

At the timing t1, the timer 34 is reset by the human detection signal of the detection circuit 33, and thereafter, the smoker constantly moves, or another person approaches the air cleaner 11 and so on. The detection circuit 33 outputs a human detection signal for each detection operation cycle, and the timer 34 is appropriately reset.

Now, at timings t21 to t22,
Further, as shown at timings t31 to t32, while the movement of the smoker is temporarily stopped and the motion sensor 18 is not detected, the timer 34 performs time counting (period). However, if the human sensor 18 detects a person again before the set time of 5 minutes has elapsed, the timer 3
4 resets the time count.

Thereafter, at the timing t4, when the smoker finishes smoking and moves away from the air cleaner 11 and the human sensor 18 is not detected, the timer 34 starts time counting, and the set time is reached. The time is counted for 5 minutes (period), and if it counts up at timing t5, a count-up signal is output to the control circuit 36, and the control circuit 36 stops the operation of the air purifier 11.

Next, the second situation will be described. At timing t6, the smoker a1 comes near the air cleaner 11 and starts smoking. The motion sensor 18 senses this, and continues to output a detection signal from the detection circuit 33. Therefore, the control circuit 36 activates the air purifier 11 and continues to operate until the timing t7 when the smoking ends. Further, when the smoker leaves and the motion sensor 18 senses it and outputs a non-detection signal from the detection circuit 33, the time counting for the set time of 5 minutes is started.

Assume that another smoker a2 comes to the air cleaner 11 and starts smoking before the set time of the timer 34 elapses after the smoker a1 leaves at the timing t7. In that case, at the timing t81, the human sensor 18
Detects the movement of a person and outputs a detection signal. Therefore, time counting is performed from timing t7 to timing t81, and thereafter, at timing t8, the timer 34 resets the time counting. Then, when smoking, the smoker changes the timing t81 to the timing t81.
It is assumed that the camera has been moving during the period 82, but has not moved still from the timing t82 to the timing t9. While the movement is stopped, the amount of infrared light received by the human sensor 18 does not change, and the detection circuit 33 outputs a non-detection signal. Therefore, the timer 34 starts time counting at timing t82.

Thereafter, at the timing t9, when the smoker a2 finishes smoking and leaves the place of the air cleaner 11, the detection circuit 33 outputs a detection signal according to the movement at that time,
The timer 34 is reset. And timing t1
When the smoker a2 comes out of the detection range 21 of the human sensor 18 at 0, the detection circuit 33 outputs a non-detection signal to the timer 34.
, The timer 34 starts the time count of the set time of 5 minutes, and at the timing t11 when the time is up, the control circuit 36 outputs an off signal to the air purifier unit 37 and outputs a signal to the display unit 38 to output air. The purifier 11 is stopped.

Next, another situation will be described. For a short time from the timing t12 to the timing t31, that is, when only the person passes through the detection range 21 of the human sensor 18 of the air purifier 11, the detection circuit 33 controls the timer 34 and the control circuit 36 at the timing t12. The air purifier 11 is operated by giving the detection signal, and the timer 34 is operated. When the detection circuit 33 moves away from the detection range 21 of the air purifier 11 at the timing t13, the detection circuit 33 outputs a non-detection signal, and in response to this, the timer 34 starts the time counting and performs the time counting for the set time of 5 minutes. Is performed, and the control circuit 36 stops the air purifier 11 at the time t14 of time-up.

Here, the reason why 5 minutes is set as an example of the timing of the time-up is as follows.
First, the device should not be stopped while the smoker is smoking. Since the human sensor 18 detects "movement of a person" as described above, it does not detect that the smoker stays still even if he is in the detection range of the sensor. As described above, the table / counter-type air purifier of the present invention receives the infrared rays radiated from the lower limbs (lower body) of the person approaching within the detection range 21 and turns on / off the air purifier. I have to. When normally smoking in the vicinity of such an air purifier, it is considered that the upper body moves, but it is necessary to consider that the lower body may not move. If the lower body does not move, no detection is made even if a smoker is within the detection range of the sensor as described above. Therefore, when the lower body is not moved, it is necessary to set an appropriate time in consideration of these factors so that the air purifier is not stopped while the smoker is smoking. According to actual measurements by the inventor of the present invention, the average time for smoking a cigarette is about 5 minutes / pipe. Therefore, in order to prevent the smoker from stopping the apparatus while smoking, the set time is set to 5 minutes. It should just be about.

Another reason is that if the smoker leaves the ascending cigarette in the ashtray without erasing it, he does not stop the apparatus until the tobacco has disappeared and no more smoke is produced. According to actual measurements by the present inventor, even when a smoker leaves a cigarette, he or she often smokes about half. or,
Experiments have shown that one unused cigarette takes about one to burn.
Because it takes 0 minutes, it takes about 5 minutes for half of the tobacco to disappear.
It will take a minute.

On the other hand, from the viewpoint of energy saving, unnecessary operation should be avoided as much as possible. For example, if it is sufficient to remove most of the residual smoke from the tobacco, even if it is not complete, the timer setting time may be set to about 1 minute.

Conversely, in order to collect the smoke that has leaked into the room after the smoker leaves the room for completeness, the time may be set a little longer. For example, as an average specific example,
The air volume of the air purifier is 15 cubic meters per minute,
Since the time in which the air in the smoking room of 150 cubic meters can be circulated once is about 10 minutes, if this time is set, effective dust collection will be performed.

Therefore, it is considered that it is desirable to set the timer setting time between 1 minute and 10 minutes in consideration of the balance between energy saving and dust collecting effect.

As described above, in the operation control device of the air purifier of the first embodiment, first, the smoker enters the detection range 21 of the human sensor 18 of the air purifier 11 and smokes. In the situation where the user leaves the place of the air purifier 11 after the end of smoking, the smoking time near the air purifier 11+
During the timer set time, the air purifier 11 is automatically operated. Therefore, compared to the conventional method in which the smoker stops the air purifier immediately when the smoker finishes smoking near the air purifier 11 and walks away, the smoker who is still in the air after the smoker walks away. After the smoke is completely removed, the operation of the air purifier can be automatically stopped, and the diffusion of the smoke of the tobacco can be effectively prevented.

In the above-described first embodiment, the set time of the timer 34 is set to 5 minutes. However, this is not particularly limited, and after the smoker has left the air cleaner 11, the set time is not particularly limited. The time required to remove the remaining smoke can also be set, for example, to 2 minutes (second embodiment). When such a short time is set, the automatic operation time of the air purifier 11 can be shorter than in the case of the first embodiment, and a more energy-saving effect can be exhibited.

Next, a third embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. The feature of the third embodiment is that the operation control device shown in FIG.
1 ', and the automatic operation control operation of the air purifier unit 37 by the human detection is the same as that of the first embodiment. As shown in FIGS. 14 to 18, also in the case of the third embodiment, the motion sensor 18 is installed downward at the center on the long side of the lower surface of the table 13 of the counter-type air cleaner 11 ′. is there.

In the counter type air purifier 11 'of the third embodiment, the main body 14' is replaced with the table type main body 1 as in the prior art.
By setting the height higher than 4, the suction dome 12 is positioned at a height at which smoke that exhales and smoke that rises from the tobacco (sidestream smoke) can be effectively sucked when a person smokes while standing.

As shown in FIGS. 19 and 20, the detection range 21 'of the motion sensor 18 is
Similarly to the case 1 (the area of the detection range may be different), the floating dust suctionable range 2 of the air purifier 11 ′
The range is adjusted so as to substantially match the floor projection plane 2 ', for example, a range within about 2 m around the table 13.
In order to detect only a person approaching the limited detection range 21 ′ and a person existing within the limited detection range 21 ′, the human sensor 18 is mounted at a height of about 1 m from the floor and downward.

Also in the case of the third embodiment, as shown in FIG. 21, a person Ma who merely passes near the air cleaner 11 'and a person who approaches the air cleaner 11' to smoke tobacco. Mb is distinguished, and the human sensor 18 used in the present embodiment does not operate for the person Ma who simply passes through the range that has been detected conventionally, and the detection range of the air purifier 11 ′. It operates by receiving infrared rays radiated from the lower limbs of a person approaching within 21 '.

Also in the third embodiment, the operation of the air purifier 11 'is detected by detecting a person who comes to the installation location of the air purifier 11' and smokes. ′ Is operated to stop after the operation, the smoke of the person who smokes in the smoking section and the sidestream smoke are effectively prevented from diffusing to the non-smoking area, and the air purifier 1 is controlled.
It is also possible to reduce the waste of detecting and operating a person who only passes near 1 ', to take measures against smoke separation, and to improve energy saving.

Next, a fourth embodiment of the present invention will be described with reference to FIG.
It will be described based on. In the first to third embodiments, the detection ranges 21 and 21 ′ of the motion sensor 18 are
Is set to be a semi-circular range centered on the table 13 because the infrared receiving unit 31 of the human sensor 18 is hemispherical and the table 13
This is because it is attached downward at the base of the main body 14 (14 'in the third embodiment). However,
The plane projection of the floating dust suctionable range of the air purifier 11 (11 'in the third embodiment) is a hatched area in FIG. 22 because the suction dome 12 is actually a rectangular parallelepiped. It looks like 25.

Therefore, unless a smoker comes within this range 25 and does not smoke, the air purifiers 11 and 11 'cannot efficiently inhale and remove tobacco smoke. Therefore, in the operation control device for an air purifier according to the fourth embodiment, the human body sensor 18 mounted downward on the lower surface of the table 13 is subjected to a mask, a filter, or other means, especially for the main bodies 14, 14 '. By shortening the detection distance in the direction perpendicular to the side surface, the human detection range of the human sensor 18 substantially matches the floating dust suctionable range 25 of the air cleaners 11 and 11 '.

Next, a fifth embodiment of the present invention will be described with reference to FIG.
It will be described based on. A smoking section is set in the workplace, and an air purifier 11 is installed there, and the smoke of tobacco is removed from the air purifier 11,
If a smoke-absorbing measure is adopted at 11 'to suck and purify and prevent the diffusion of smoke to the non-smoking area, the smoker comes near the air purifier 11, 11' and smokes. In this case, the smoker is likely to exist in any direction of 360 degrees around the table 13 of the air cleaners 11 and 11 '. It is desirable that the automatic operation of the air purifier 11 can be performed by detecting a person who performs the operation. For this purpose, the detection ranges 21 and 21 'of the human sensor 18 are set around the table 13 of the air purifiers 11 and 11'. It is preferable that the distances be substantially equal to each other.

Therefore, as shown in FIG. 23, in the operation control device for an air purifier according to the fifth embodiment, the entire range of the table 13 within 360 degrees around the table 13 is substantially equidistant from the air purifiers 11 and 11 '. In order to detect the person, the mounting position or the number of the human sensors 18 is adjusted. That is, when the two motion sensors 18a and 18b are attached to the lower surface of the table 13 of the air cleaners 11 and 11 ',
The mounting position is on the diagonal line of the table 13.

By setting each of the two motion sensors 18a and 18b at diagonal positions on the lower surface of the table 13, the motion sensors 18a and 18b cover the surroundings 26a and 26b of two adjacent side surfaces. Then, by combining the detection ranges 26a and 26b of the two, the minimum number of the two human sensors 18a and 18b detects the person in the suctionable range 26 around the entire 360 degrees of the air cleaners 11 and 11 '. can do.

In the fifth embodiment, a minimum of two human sensors 18a and 18b are used, and the mounting positions are modified to detect people around the air cleaners 11 and 11 '. However, in a simpler method, FIG.
As shown in FIG. 4, a human sensor 18 can be attached to each of the four sides on the lower surface of the table 13 (sixth embodiment).

Next, a seventh embodiment of the present invention will be described with reference to FIG.
It will be described based on. The plane projection of the floating dust suctionable range of the air purifiers 11 and 11 'is set in a range 25' at an unequal distance from the periphery of the table 13 depending on the model. When setting the detection range 21 ″ of the human sensor 18 for such an air purifier 11, 11 ′,
The table 1 in the plane projection range 25 'of the suctionable range
It is appropriate to set the distance range to substantially cover the farthest distance from the surroundings of No. 3.

When the air purifiers 11 and 11 'are installed in the smoking section, the smoking section is usually set near the wall of the workplace. It is often installed and used. In such a case, the most efficient use form is to locate the side surface having the longest suctionable distance on the side opposite to the wall.

In such a use form, the smoker is unlikely to smoke beside the air cleaners 11 and 11 ', and smokes in front of the air cleaners 11 and 11' (the side opposite to the wall). Probability is high. Therefore, by setting the detection range 21 ″ of the human sensor 18 to a distance range that substantially includes the farthest distance from the periphery of the table 13 in the planar projection range 25 ′ of the suctionable range, the air purifiers 11 and 11 ′.
It is possible to efficiently inhale and purify tobacco smoke.

In the first to seventh embodiments, the pyroelectric infrared sensor is used as the human sensor 18. However, this type of sensor is a single sensor and a person exists somewhere in the vicinity. Then, there is a feature that it can be detected, and accordingly, the required number of sensors can be reduced and the necessary detection range can be covered. However, sensors are not limited to this type and have a small sensing range (ie,
A reflected light detection type sensor (strong directivity), an ultrasonic sensor, or the like can also be used. In this case, if it is difficult to cover the detection range with one sensor, the necessary detection range may be covered using a large number of sensors.

Further, as shown in FIG.
Instead of attaching the sensors to the air purifiers 11 and 11 ', the air cleaners 11 and 11' may be attached to the ceiling of the installation location to detect when a smoker enters a predetermined detection range. There are no restrictions on the type, installation location, and number used. However, the air purifiers 11 and 1
It is necessary to set the detection range so as to detect a person present in a range substantially matching the floating dust suctionable range 1 '.

Further, in any of the above embodiments, when the human sensor 18 detects the presence of a person, for example, a detection sound such as "beep" is emitted, or a detection lamp is turned on. With this configuration, the person who has come to smoke can start smoking after confirming the activation of the air purifier with the sound or the lamp.

[0081]

As described above, according to the first aspect of the present invention,
The motion sensor detects a person within the range where the air cleaner can suck floating dust, and the operation control circuit receives the detection signal from the motion sensor and starts the air cleaner to clean the air. Therefore, even if the person outside the suction range of the air purifier detects the presence or movement of the person, the person actually comes closer to the air purifier as compared to the case where the air purifier is started. Detecting only smokers who are trying to smoke tobacco is reliably detected and the air purifier is activated to purify the air, reducing unnecessary activation and conserving energy. Can work. As a result, when a smoking area is set in the workplace and an air purifier is installed in the smoking area, the area where the air dust can be sucked by the air purifier is set as a smoking area, so that a narrow smoking area is ensured. Can be achieved.

In addition, when the air purifier is used only as a smoke separating device, since only the smoker can be detected and the automatic operation can be performed, there is little chance that the air purifier is started by detecting a person other than the smoker. The air purifier sucks and removes airborne dust to reduce the chance of air purification operation, and also removes airborne dust other than tobacco smoke to extend the cleaning cycle for removing airborne dirt from the air purifier. Can,
There is also an advantage that the running cost for the user can be reduced.

According to the second aspect of the present invention, the detection range of the human sensor is made coincident with the floating dust suctionable range which is equidistant from the periphery of the air cleaner, so that any position around the air cleaner can be determined. Even if a person smokes, the smoker can be automatically detected and the air purifier is activated, and the smoke from the tobacco can be sucked and purified.

According to the third aspect of the present invention, when the human sensor detects a person within the suctionable range of the air purifier, the air purifier is operated for a predetermined set time. Even after the human sensor has stopped detecting a person within the range that can be suctioned away, the air purifier is continuously operated for the set time to purify the remaining smoke, and the smoke separation measures are made more effective. can do.

According to the invention of claim 4, when a person approaches the air purifier for smoking, the human sensor detects the lower limb of the person and activates the air purifier. The air purifier can be automatically operated by reliably detecting only those who approach and smoke.

According to the fifth aspect of the present invention, even if a smoker approaches any position in the suctionable range of the air purifier, the smoker can be detected and the air purifier can be automatically operated.

According to the sixth aspect of the present invention, the air cleaner is provided with a minimum number of human sensors to the air purifier for smoking.
Automatically driving can be performed by detecting a person at any position.

According to the seventh aspect of the present invention, in addition to the effect of the first aspect of the present invention, in the case where the floor projection surface of the air duster in the area where the floating dust can be sucked is unequal from the periphery of the air cleaner. In addition, the detection range of the human sensor was set to a range equidistant from the surroundings of the air purifier, and set to a distance range almost coincident with the farthest distance from the air purifier in the floor projection surface of the floating dust suctionable range. Therefore, when the air purifier is installed near the wall such that the side surface having the longest suctionable distance is located on the side opposite to the wall, the air purifier can efficiently inhale and purify tobacco smoke.

According to the invention of claim 8, in addition to the effect of the invention of claim 7, when the human sensor detects a person within the suctionable range of the air purifier, the air purifier is operated for a predetermined time. Even after the last person leaves the air purifier and the motion sensor no longer detects a person within the suctionable range, the air purifier is continuously operated for the set time to remove remaining smoke. It can purify and make the countermeasures against smoke more effective.

According to the ninth aspect, the seventh and eighth aspects are provided.
In addition to the effect of the invention, when a person approaches the air purifier for smoking, the human sensor detects the lower limb of the person and activates the air purifier, so that the person approaches the air purifier and smokes. The air purifier can be automatically operated by reliably detecting only the person who makes the determination.

According to the tenth aspect of the present invention, in addition to the effect of the ninth aspect of the present invention, even if a smoker is located in any position within the suctionable range of the air purifier, the smoker is detected and the air purifier is operated. Can be driven automatically.

According to the eleventh aspect of the present invention, in addition to the effect of the tenth aspect of the present invention, a person present at any position of 360 degrees in the air purifier for smoking can be detected by the minimum number of human sensors. And automatic driving can be detected.

According to the twelfth aspect of the invention, in addition to the effect of the first aspect, unnecessary operation of the air purifier when a smoker enters or exits can be avoided.

According to the thirteenth aspect, in addition to the effects of the twelfth aspect, the air purifier can be operated with a balance between energy saving and dust collecting effects.

According to the fourteenth aspect, in addition to the effects of the thirteenth aspect, it is possible to further operate the air purifier with a balance between energy saving and dust collecting effects.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram of an operation control device of a table type air purifier according to a first embodiment of the present invention.

FIG. 2 is a flowchart of operation control according to the embodiment.

FIG. 3 is a timing chart illustrating a specific operation of the operation control according to the embodiment.

FIG. 4 is a front view of the air purifier in the embodiment.

FIG. 5 is a side view of the air purifier in the embodiment.

FIG. 6 is a plan view of the air purifier in the embodiment.

FIG. 7 is a bottom view of the air purifier according to the embodiment.

FIG. 8 is a perspective view of the air purifier according to the embodiment as viewed obliquely from below.

FIG. 9 is a side view showing a human detection range of the human sensor in the embodiment.

FIG. 10 is a plan view showing a human detection range of the human sensor in the embodiment.

FIG. 11 is a side view showing a relationship between a floating dust suctionable range of the air purifier and a human detection range of a human sensor in the embodiment.

FIG. 12 is a plan view showing the operation of the above embodiment.

FIG. 13 is a side view showing the operation of the above embodiment.

FIG. 14 is a perspective view of a counter-type air purifier to which the third embodiment of the present invention is applied.

FIG. 15 is a front view of the air purifier in the embodiment.

FIG. 16 is a side view of the air purifier in the embodiment.

FIG. 17 is a plan view of the air purifier in the embodiment.

FIG. 18 is a bottom view of the air purifier in the above embodiment.

FIG. 19 is a side view showing a human detection range of the human sensor in the embodiment.

FIG. 20 is a side view showing a relationship between a floating dust suctionable range of the air purifier and a human detection range of the human sensor in the above embodiment.

FIG. 21 is a side view showing the operation of the above embodiment.

FIG. 22 is a bottom view showing a human detection range of the human sensor according to the fourth embodiment of the present invention.

FIG. 23 is a bottom view showing a human detection range of the human sensor according to the fifth embodiment of the present invention.

FIG. 24 is a bottom view showing a human detection range of the human sensor according to the sixth embodiment of the present invention.

FIG. 25 is a bottom view showing a human detection range of a human sensor according to a seventh embodiment of the present invention.

FIG. 26 is a side view showing a human detection range of a human sensor according to an eighth embodiment of the present invention.

FIG. 27 is a plan view showing a human detection range of a human sensor used in a conventional example.

FIG. 28 is a side view showing a human detection range of a human sensor used in a conventional example.

[Explanation of symbols]

 11, 11 'Air purifier 12 Suction dome 13 Table 14, 14' Main body 18 Human sensor 21, 21 ', 21 "Detection range 22, 22' Suctionable range 23 Dead range 25, 25 'Projection range 26, 26a, 26b Detection range 31 Infrared light receiving section 32 Amplifying circuit 33 Detection circuit 34 Timer 35 Operation section 36 Control circuit 37 Air purifier unit 38 Display section

Claims (14)

[Claims] 1. An air purifier operation control device for automatically operating an air purifier for sucking and removing suspended dust by detecting a person approaching the air purifier, wherein the air purifier is installed at an appropriate position of the air purifier. A motion sensor that detects a person who has moved, and an operation control circuit that activates the air purifier in response to a detection signal of the motion sensor. An operation control device for an air purifier, wherein the operation control device substantially matches the suctionable range. 2. When the floor projection surface of the range in which the air cleaner is capable of sucking the floating dust is equidistant from the periphery of the air cleaner, the detection range of the human sensor is changed to the suction of the floating dust by the air cleaner. The operation control device for an air purifier according to claim 1, wherein the operation control device is set so as to substantially coincide with a floor projection surface in a possible range. 3. The air purifier according to claim 1, wherein the operation control circuit operates the air purifier for a predetermined set time in response to a detection signal of the motion sensor. Operation control device. 4. The air purifier is a counter type or a table type having an air suction port provided on a table upper surface, the human sensor is installed downward, and a floor within a range where the air purifier can suck floating dust. 4. A method for detecting a person who has entered a boundary of a projection plane.
An operation control device for an air purifier according to any one of the above. 5. The air purifier is provided at a plurality of locations of the air purifier so as to cover the entire surface of the floor projection surface within a range where the floating dust of the air purifier can be sucked. Item 5. An operation control device for an air purifier according to item 4. 6. The operation control device for an air purifier according to claim 5, wherein the motion sensor is a pyroelectric infrared sensor, and is installed downward at two locations on a diagonal line of the table. . 7. When the floor projection surface of the air duster's floating dust suctionable area is at an unequal distance from the periphery of the air cleaner, the detection range of the motion sensor is shifted from the periphery of the air cleaner. The air purifier according to claim 1, wherein the air purifier is set at an equidistant range, and is set to a distance range substantially coincident with a farthest distance from the air purifier on the floor projection surface of the floating dust suctionable range. Operation control device. 8. The operation control of an air purifier according to claim 7, wherein the operation control circuit operates the air purifier for a predetermined set time in response to a detection signal of the motion sensor. apparatus. 9. The air purifier is a counter type or a table type having an air suction port provided on a table upper surface, the human sensor is installed downward, and a floor in a range where the air purifier can suck floating dust. 9. The operation control device for an air purifier according to claim 7, wherein the operation control device detects a person who has entered the boundary of the projection plane. 10. The air purifier is provided at a plurality of locations of the air purifier so as to cover the entire surface of the floor projection surface in a range where the floating dust of the air purifier can be sucked. Item 10. An operation control device for an air purifier according to item 9. 11. The operation control device for an air purifier according to claim 10, wherein the motion sensor is a pyroelectric infrared sensor, and is installed downward at two positions on a diagonal line of the table. . 12. A timer which starts when the output of the detection signal from the human sensor is interrupted and resets when the detection signal is output again, and operates when the timer counts up. The operation control device for an air purifier according to claim 1, wherein the operation is stopped. 13. The set time of the timer is from one minute to one.
The operation control device for an air purifier according to claim 12, wherein the operation is performed for up to 0 minutes. 14. The set time of the timer is 3 minutes to 7 minutes.
The operation control device for an air purifier according to claim 13, wherein the operation is performed for up to minutes.