JPH06262021A - Air purifier - Google Patents

Abstract

PURPOSE:To obtain an air purifier properly operated in a room having any area by providing switches allowing a user to select the area of a room and changing over a threshold level corresponding to the selected switch. CONSTITUTION:A wide area room switch 2, a medium area room switch 3 and a narrow area room switch 4 are provided according to the areas of rooms. When the switch showing the area of a room having an air purifier arranged thereto is pushed by a user, a signal is inputted to an input/output control block 6 constituted of a microprocessor. Whereupon, a motor control block 7 is controlled by the output thereof to perform the control of the operation, stop and speed of the motor 8 to change over the wind quantity of the air purifier.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier equipped with a sensor for detecting dust, gas and the like.

[0002]

2. Description of the Related Art An air purifier equipped with a conventional gas sensor has a constant level of operation and stop by monitoring the output of the gas sensor regardless of the size of the room in which it is installed, and the air volume also changes constantly. Instead, the operating time was also built-in with a timer to stop the operation after a fixed time.

[0003]

However, since there are many rooms of various forms and the size of the rooms in recent years is large, the air purifier may differ due to the difference in the size of the room even if the same smoke is taken. The operation start time, the switching time of the air volume, the operation time also changed, and it did not match the user's actual feeling,
In addition, there is a big problem that the driving noise is noisy in a small room. In view of the above problems, the present invention provides an air purifier that can perform an appropriate operation even when used in a room of any size.

[0004]

In order to achieve the above object, the technical means of claim 1 of the present invention is provided with a switch for allowing the user to select the size of the room, and according to the selected switch, An object of the present invention is to provide an air purifier that switches a threshold level that switches a motor air volume by monitoring a gas sensor output.

To achieve the above object, the technical means of claim 2 of the present invention has a switch for the user to select the size of the room to be used, and detects that the power of the air purifier is turned off. The purpose is to provide an air purifier that indicates to the user to reselect the size of the room.

In order to achieve the above object, the technical means of claim 3 of the present invention has a switch for the user to select the size of the room to be used, and detects that the power of the air purifier is removed. The purpose is to provide an air purifier that indicates to the user to reselect the size of the room.

To achieve the above object, the technical means of claim 4 of the present invention uses an air purifier according to the time until the gas sensor output reaches the saturation point and the change amount from the reference value to the saturation point. It is an object of the present invention to provide an air purifier that estimates the size of a room in which a room is present and automatically monitors the output of a gas sensor to switch the motor air volume to switch the threshold level.

In order to achieve the above object, the technical means according to claim 5 of the present invention determines the operating time by fuzzy inference based on the time until the gas sensor output reaches the saturation point and the change amount from the reference value to the saturation point. With the air purifier
To provide an air purifier that estimates the size of the room where the air purifier is used, monitors the gas sensor output, switches the fuzzy table that determines the operating time, and displays the remaining operating time. It is an object.

[0009]

According to the first aspect of the present invention, the operation of the air purifier can be started at the same timing regardless of the size of the room with the above-described structure.

According to a second aspect of the present invention, by the above-mentioned structure,
You can drive quietly in any size hilly area.

According to a third aspect of the present invention, which has the above-mentioned structure,
Since the movement of the installation location is indicated, it is possible to prevent the user from forgetting the setting.

According to a fourth aspect of the present invention, which has the above-mentioned structure,
Since the size of the room is automatically inferred, the trouble of setting can be eliminated.

According to a fifth aspect of the present invention, which has the above-mentioned structure,
The optimum driving time can be automatically selected and the user can be notified of the remaining driving time.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of claim 1 of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a gas sensor, 2
Is a wide room (for example, 10 tatami mats or more) switch, 3 is an ordinary flat (for example, 6 to 8 tatami mats) switch, 4 is a narrow room (for example, 4.5 tatami mats or less) switch, and 5 is a stop switch.
These are inputted to an input / output control block 6 composed of a microprocessor and the like, and the output thereof controls a motor control block 7 to operate, stop and speed control the motor 8. The air volume of the air purifier is switched.

The operation of the air purifier configured as described above will be described below.

First, the operation of automatic operation by the output of the gas sensor 1 will be described with reference to FIG. With respect to the reference value set when the air is clean in FIG. 2, with respect to the output of the gas sensor 1, the LO level of the air volume of the air purifier,
The HI level is set in the input / output control block 6. When smoking is started at time t1, the gas sensor output starts rising as shown in the figure. Next, when the time t2 is reached, the gas sensor output reaches the set LO level,
The motor 8 starts operating with the LO air volume. Similarly, when the time t3 is reached, the motor 8 starts to operate with the HI air volume.

In automatic operation for performing such an operation,
First, when the room where the air purifier is installed is small, the cigarette gas reaches the gas sensor 1 mounted on the air purifier in a short time, so the gas sensor output also shows a rapid rise, and the LO level and Since the HI level is reached, the user pushes the narrow room switch 4 to push the HI level to the reference value as shown in FIG.
Appropriate operation can be performed by increasing the LO level setting. Next, when the room where the air purifier is installed is large, the cigarette gas reaches the gas sensor 1 mounted on the air purifier in a long time, and the rise of the gas sensor output also slows down, so it is quite LO level. Since the user does not reach the HI level and the HI level, the user pushes the wide room switch 2 to lower the setting of the HI level and the LO level with respect to the reference value as shown in FIG. Can be implemented.

As described above, according to this embodiment, an appropriate cleaning operation can be carried out with one switch regardless of the size of the room.

A second embodiment of the present invention will be described below with reference to the drawings. In FIG. 4, 1 is a gas sensor,
2 is a large room (for example, 10 tatami mats or more) switch, 3 is an ordinary heddle (for example, 6 to 8 tatami mats) switch, 4 is a narrow room (for example, 4.5 tatami mats or less) switch, and 5 is a stop switch. These are input to an input / output control block 6 composed of a microprocessor and the like, and the output thereof controls a motor control block 7 to operate, stop and speed control the motor 8. Then, the air volume of the air purifier is switched.

The operation of the air purifier configured as described above will be described below.

First, when the room in which the air purifier is installed is small, the operation noise is noisy because the distance between the air purifier and the user is short when the air purifier is operated at a normal air volume. By pressing 4, the figure 5 (a)
Like the normal room (b), the HI level,
Quiet operation can be performed by lowering the air volume at the LO level, that is, by lowering the rotation speed of the motor 8 by the motor control block 7. Next, when the room where the air purifier is installed is large, the distance between the air purifier and the user is large, so even if the driving noise is a little loud, it does not feel noisy. By pushing, the air volume at the HI level and the LO level is made higher than the air volume in the normal room (b) as shown in FIG. 5 (c), that is, the rotation speed of the motor 8 is set by the motor control block 7. By raising it, you can expect a rapid cleaning effect.

As described above, according to the present embodiment, the cleaning operation can be performed with an appropriate operating noise with a single switch regardless of the size of the room to be installed.

A third embodiment of the present invention will be described below with reference to the drawings. In FIG. 6, 1 is a gas sensor,
2 is a large room (for example, 10 tatami mats or more) switch, 3 is an ordinary heddle (for example, 6 to 8 tatami mats) switch, 4 is a narrow room (for example, 4.5 tatami mats or less) switch, and 5 is a stop switch. These are input to an input / output control block 6 composed of a microprocessor and the like, and the output thereof controls a motor control block 7 to operate, stop and speed control the motor 8. Then, the air volume of the air purifier is switched. Reference numeral 9 denotes a backup power supply which prevents the microprocessor in the input / output control block 6 from being powered off even if the air purifier is powered off.
Reference numeral 10 is a ZVP (zero volt pulse) detection circuit, which inputs a pulse to a microprocessor in synchronization with an AC power supply. Reference numeral 11 is a display block.

The operation of the air purifier configured as described above will be described below. First, when the air purifier is connected to the power source, a pulse is input from the ZVP detection circuit 10, but when the power of the air purifier is removed, the backup power source 9 causes the microprocessor in the input / output control block 6 to operate. Power does not turn off, but ZVP
Since the pulse from the detection circuit 10 is not input, it is judged that the air purifier has moved, and when the pulse is input from the ZVP detection circuit 10 next time, the display block 1
Display a message prompting to reset the switches 2 to 4 for setting the size of the room.

As described above, according to this embodiment, it is possible to prevent the user from forgetting to set the size of the room even if the room where the air purifier is installed is changed.

An embodiment of claim 4 of the present invention will be described below with reference to the drawings. In FIG. 7, 1 is a gas sensor, which is input to an input / output control block 6 composed of a microprocessor and the like, and the output thereof controls the motor control block 7 to operate the motor 8. The air volume of the air purifier is switched by stopping and speed control. Reference numeral 12 is a memory, which stores the patterns of the gas sensor output when smoking a cigarette corresponding to each of a small room, an ordinary room, and a large room.

The operation of the air purifier configured as described above will be described below.

Initially, the LO and HI levels are set to the level of an ordinary room, for example. If the user installs an air purifier in the room, the LO and HI levels are driven at the normal room level at the beginning, but at this time, when the actual output pattern of the gas sensor 1 is smoking (t1). ) To the saturation point (t3) (t3-t1) or the time (t2) when the LO level is reached to the saturation point (t3) (t3-t2) and the magnitude of the output of the saturation point (t3). P1 to P3)
Is compared with the pattern stored in the memory 12 in advance, the room used is small (Fig. 8 (a)).
Pattern) or a normal room (pattern in Figure 8 (b))
Whether the room is large or not (the pattern in FIG. 8 (a)) is estimated, and the LO and HI levels corresponding to the size of each room are automatically set after the second smoking. If the actual output pattern of the gas sensor 1 is stored in the memory 12 each time, the size of the room can be more accurately estimated as the number of smoking increases.

As described above, according to this embodiment, since the size of the room can be automatically estimated, the air purifier can be provided without any trouble.

An embodiment of claim 5 of the present invention will be described below with reference to the drawings. In FIG. 9, reference numeral 1 denotes a gas sensor, which is input to an input / output control block 6 composed of a microprocessor and the like, and the output thereof controls a motor control block 7 to operate a motor 8. The air volume of the air purifier is switched by stopping and speed control. Reference numeral 12 is a memory, which stores the patterns of the gas sensor output when smoking a cigarette corresponding to each of a small room, an ordinary room, and a large room. As for the operating time of the HI and LO air volumes after the output of the gas sensor 1 reaches the saturation point, the time (t3-t1) from smoking (t1) to the saturation point (t3) or the LO level in FIG. 10 is reached. Based on the information of the time (t3-t2) from the time (t2) to the saturation point (t3) and the magnitude (P) of the output at the saturation point, based on the fuzzy rule for determining the operating time of FIG. Fuzzy reasoning is made and decided. The fuzzy table that determines the operating time is automatically switched depending on the size of the room as shown in FIG.

The operation of the air purifier configured as described above will be described below.

First, the operating time is set to a fuzzy table in an ordinary room, for example. If the user installs an air purifier in the room, the fuzzy table in the normal room is used for the operation time at first, but at this time, when the actual output pattern of the gas sensor 1 is smoking (t1). To the saturation point (t3) (t3-t1) or when the LO level is reached (t2) to the saturation point (t3) (t3-t2) and the saturation point output magnitude (P1). ~ P
By comparing 3) with the pattern stored in the memory 12 in advance, the room used is small (see FIG. 13).
It is estimated whether the room is (a) (pattern) or a normal room (pattern in FIG. 13 (b)) or a large room (pattern in FIG. 13 (a)). The fuzzy table for the operating time suitable for the size of the room is automatically set. If the actual output pattern of the gas sensor 1 is stored in the memory 12 each time, the size of the room can be more accurately estimated as the number of smoking increases. Also, the remaining time display 13 can be easily performed because the remaining operating time is determined by fuzzy reasoning when the output level of the gas sensor 1 reaches the saturation point.

As described above, according to the present embodiment, the size of the room can be automatically estimated and the fine operating time can be set, so that an extremely convenient air purifier can be provided.

[0034]

As is apparent from the above embodiments, according to the air purifier of the present invention, an appropriate automatic driving operation can always be performed regardless of the size of the room used.

Further, no matter what size the room is used, it is possible to always perform a quiet and comfortable automatic driving operation.

Further, even when the user changes the installation room, the user can be urged not to forget to set the room size.

Further, since the operation suitable for the size of the room can be automatically performed, comfortable automatic operation can be performed without any trouble.

Further, the operating time suitable for the size of the room can be automatically selected, and an air purifier with a very good feeling of use can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram of a control circuit according to an embodiment of the present invention.

FIG. 2 is an operation diagram of a gas sensor according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram of level switching according to an embodiment of the present invention.

FIG. 4 is a block diagram of a control circuit according to an embodiment of the present invention.

FIG. 5 is a diagram showing an air volume switching principle according to an embodiment of the present invention.

FIG. 6 is a block diagram of a control circuit according to an embodiment of the present invention.

FIG. 7 is a block diagram of a control circuit according to an embodiment of the present invention.

FIG. 8 is a gas sensor operation diagram according to an embodiment of the present invention.

FIG. 9 is a block diagram of a control circuit according to an embodiment of the present invention.

FIG. 10 is an operation diagram of a gas sensor according to an embodiment of the present invention.

FIG. 11 is an explanatory diagram of a fuzzy rule according to an embodiment of the present invention.

FIG. 12 is an explanatory diagram of a fuzzy table according to an embodiment of the present invention.

[Explanation of symbols]

 1 gas sensor 2 wide room switch 3 ordinary room switch 4 narrow room switch 5 stop switch 6 input / output control block 7 motor control block 8 motor 9 backup power supply 10 ZVP detection circuit 12 memory 13 remaining time display

Claims (5)

[Claims] 1. A sensor for detecting dust, gas, etc. is mounted,
It is an air purifier that automatically changes the motor air volume according to its output.It has a switch for the user to select the size of the room to be used, and the sensor output is monitored according to the selected switch. An air purifier that switches the threshold level that switches the motor air volume. 2. A sensor for detecting dust, gas, etc. is mounted,
It is an air purifier that automatically changes the motor air volume according to its output, and has a switch that allows the user to select the size of the room to be used. Air purifier that switches values. 3. A sensor for detecting dust, gas, etc. is mounted,
An air purifier that automatically changes the motor air flow according to its output, has a switch that allows the user to select the size of the room to be used, detects that the air purifier is powered off, and uses it. An air purifier that indicates to the operator to reselect the size of the room. 4. A sensor for detecting dust, gas, etc. is mounted,
An air purifier that automatically changes the motor air flow according to its output.The room where the air purifier is used depends on the time it takes for the sensor output to reach the saturation point and the amount of change from the reference value to the saturation point. The air purifier that switches the threshold level to switch the motor air volume by automatically monitoring the sensor output by estimating the width of the air. 5. A sensor for detecting dust, gas, etc. is mounted,
An air purifier that automatically changes the motor air volume according to its output, and the operating time is determined by fuzzy reasoning based on the time until the gas sensor output reaches the saturation point and the amount of change from the reference value to the saturation point. An air purifier that estimates the size of the room where the air purifier is used, monitors the sensor output and determines the operating time, and switches the fuzzy table and displays the remaining operating time. vessel.