JP3775807B2 - air purifier - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an air purifier equipped with a sensor for detecting dust, gas and the like.
[0002]
[Prior art]
A conventional air purifier equipped with a 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. It had a built-in timer and stopped after a certain time after starting operation.
[0003]
[Problems to be solved by the invention]
However, since there are many different types of rooms in recent years, and the rooms vary in size, the start time of the air purifier and the switching time of the air flow can vary depending on the size of the room even if you smoke in the same way. However, the driving time has changed and it does not match the user's feeling, and there is a big problem that the driving sound 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 regardless of the size of a room.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the technical means of claim 1 of the present invention has a switch for the user to select the size of the room to be used, detects that the air cleaner has been turned off, and uses it. It is intended to provide an air purifier that indicates to the person to reselect the size of the room.
[0005]
[Action]
According to the first aspect of the present invention, since the movement of the installation location is displayed by the above-described configuration, it is possible to prevent the user from forgetting the setting.
[0006]
【Example】
Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a gas sensor, 2 is a large room (for example, 10 tatami mat or more) switch, 3 is a normal room (for example, 6-8 tatami mat) switch, 4 is a narrow room (for example, 4.5 tatami mat or less) switch, 5 is It is a stop switch. These are input to an input / output control block 6 composed of a microprocessor or the like, and the motor control block 7 is controlled by the output of the input / output control block 6 to operate, stop and speed control the motor 8. The air volume of the air purifier is switched.
[0007]
About the air cleaner comprised as mentioned above, the operation | movement is demonstrated below.
[0008]
First, the automatic operation based on the output of the gas sensor 1 will be described with reference to FIG. The LO level and HI level of the air flow of the air cleaner are set in the input / output control block 6 with respect to the output of the gas sensor 1 with respect to the reference value set when the air is clean in FIG. If the cigarette starts to be sucked at time t1, the gas sensor output starts to rise as shown in the figure. Next, when the time t2 is reached, the gas sensor output reaches the set LO level, so the motor 8 starts to operate at the LO air volume. Similarly, when the time t3 is reached, the motor 8 starts to operate with the HI air volume.
[0009]
In the automatic operation in which such an operation is performed, when the room where the air purifier is installed is small, the gas of the cigarette reaches the gas sensor 1 mounted on the air purifier in a short time, so the gas sensor output also increases rapidly. The LO level and the HI level are instantaneously reached, and the user sets the HI level and the LO level with respect to the reference value as shown in FIG. By raising the value, it is possible to carry out appropriate operation.
[0010]
Next, when the room where the air purifier is installed is large, the tobacco gas reaches the gas sensor 1 mounted on the air purifier in a long time, so the rise of the gas sensor output also becomes slow, so it is quite LO level. Since the user does not reach the HI level, the user presses 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.
[0011]
In FIG. 4, 1 is a gas sensor, 2 is a large room (for example, 10 tatami mat or more) switch, 3 is a normal room (for example, 6-8 tatami mat) switch, 4 is a narrow room (for example, 4.5 tatami mat or less) switch, 5 is It is a stop switch. These are input to an input / output control block 6 composed of a microprocessor or the like, and the motor control block 7 is controlled by the output of the input / output control block 6 to operate, stop and speed control the motor 8. The air volume of the air purifier is switched.
[0012]
About the air cleaner comprised as mentioned above, the operation | movement is demonstrated below.
[0013]
First, when the room where the air purifier is installed is small, the user presses the narrow room switch 4 because the operation sound is noisy because the distance between the air purifier and the user is close when driving with normal air volume. Thus, as shown in FIG. 5 (a), the air volume at the HI level and LO level is lowered from the air volume at the normal room (b), that is, the motor control block 7 reduces the rotational speed of the motor 8. By doing so, you can drive quietly. Next, when the room where the air purifier is installed is large, the distance between the air purifier and the user is far away, so even if the driving noise increases slightly, the user does not feel noisy. By pushing, the air volume at the HI level and LO level is increased from the air volume in the normal room (b) as shown in FIG. 5C, that is, the motor control block 7 controls the rotation speed of the motor 8. By doing so, a rapid cleaning effect can be expected.
[0014]
Hereinafter, other embodiments of the present invention will be described. In FIG. 6, 1 is a gas sensor, 2 is a large room (for example, 10 tatami mat or more) switch, 3 is a normal room (for example, 6-8 tatami mat) switch, 4 is a narrow room (for example, 4.5 tatami mat or less) switch, 5 is It is a stop switch. These are input to an input / output control block 6 composed of a microprocessor or the like, and the motor control block 7 is controlled by the output of the input / output control block 6 to operate, stop and speed control the motor 8. The air volume of the air purifier is switched. Reference numeral 9 denotes a backup power source, which prevents the microprocessor in the input / output control block 6 from being turned off even if the air cleaner is turned off. Reference numeral 10 denotes a ZVP (zero volt pulse) detection circuit which inputs a pulse to the microprocessor in synchronization with an AC power source. Reference numeral 11 denotes a display block.
[0015]
About the air cleaner comprised as mentioned above, the operation | movement is demonstrated 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 disconnected, the backup power source 9 causes the microprocessor in the input / output control block 6. Although the power is not turned off, a pulse from the ZVP detection circuit 10 is not input, so it is determined that the air purifier has been moved. Next, when the pulse is input from the ZVP detection circuit 10, the display block 11 A display prompting the user to reset the switches 2 to 4 for setting the size is displayed.
[0016]
As described above, it is possible to prevent the user from forgetting to set the room size even if the room where the air purifier is installed changes.
[0017]
Hereinafter, reference examples of the present invention will be described. In FIG. 7, reference numeral 1 denotes a gas sensor, which is input to an input / output control block 6 constituted by a microprocessor or the like, and controls the motor control block 7 by its output to operate the motor 8. The air flow of the air purifier is switched by stopping and speed control. Reference numeral 12 denotes a memory which stores in advance the gas sensor output pattern when the cigarettes corresponding to each of the narrow room, the normal room, and the wide room are smoked.
[0018]
About the air cleaner comprised as mentioned above, the operation | movement is demonstrated below.
[0019]
First, the LO and HI levels are set to, for example, normal room levels. If the user installs an air purifier in the room, the LO and HI levels are initially operated at the normal room level. At this time, the actual output pattern of the gas sensor 1 starts from smoking (t1). Time (t3-t1) to the saturation point (t3) or time (t2-t2) from the time (t2) when the LO level is reached to the saturation point (t3) and the magnitude of the output of the saturation point (P1 By comparing P3) with the pattern stored in the memory 12 in advance, the room used is a narrow room (pattern in FIG. 8A) or an ordinary room (FIG. 8B). (Pattern) or large room (pattern in Fig. 8 (a)), and LO and HI levels are automatically set according to the size of each hail from the second smoking. It will be. If the actual output pattern of the gas sensor 1 is stored in the memory 12 each time, the room size can be estimated more accurately as the number of smoking increases.
[0020]
In FIG. 9, reference numeral 1 denotes a gas sensor, which is input to an input / output control block 6 constituted by a microprocessor or the like, and controls the motor control block 7 by its output to operate the motor 8. The air flow of the air purifier is switched by stopping and speed control. Reference numeral 12 denotes a memory which stores in advance the gas sensor output pattern when the cigarettes corresponding to each of the narrow room, the normal room, and the wide room are smoked.
[0021]
The operation time of the HI and LO airflows after the output of the gas sensor 1 reaches the saturation point reaches the time (t3-t1) from the time of smoking (t1) to the saturation point (t3) in FIG. 10 or the LO level. Based on the fuzzy rules for determining the operation time shown in FIG. 11 based on the information on the time (t3−t2) from the time (t2) to the saturation point (t3) and the magnitude (P) of the output of the saturation point. Inferred and determined. Further, the fuzzy table for determining the operation time is automatically switched as shown in FIG. 12, for example, depending on the size of the room.
[0022]
About the air cleaner comprised as mentioned above, the operation | movement is demonstrated below.
[0023]
First, the operation time is set to, for example, an ordinary room fuzzy table. If a user installs an air purifier in a room, the operation time is initially operated with a fuzzy table in a normal room, but at this time, the actual output pattern of the gas sensor 1 is saturated from the time of smoking (t1). The time (t3-t1) from the point (t3) to the point (t3) or the time (t3-t2) from the time (t2) when the LO level is reached to the saturation point (t3) and the magnitude of the output at the saturation point (P1 to P3) ) Is compared with the pattern stored in the memory 12 in advance, whether the room used is a narrow room (pattern in FIG. 13A) or an ordinary room (in FIG. 13B). (Pattern) or large room (pattern in Fig. 13 (a)), and from the second smoking, the setting of the fuzzy table of the driving time corresponding to the size of each haze is automatically set Will be done.
[0024]
If the actual output pattern of the gas sensor 1 is stored in the memory 12 each time, the room size can be estimated more accurately as the number of smoking increases. The remaining time display 13 can be easily performed because the remaining operation time is determined by fuzzy inference when the output level of the gas sensor 1 reaches the saturation point.
[0025]
【The invention's effect】
As is clear from the above embodiments, according to the air cleaner of the present invention, it is possible to prompt the user to set the room size without forgetting when the user changes the installation room.
[Brief description of the 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 the gas sensor. FIG. 3 is an explanatory diagram of level switching. principle diagram FIG. 6 is a block diagram of the block diagram FIG. 7 is a block diagram Figure 8 the gas sensor operation Figure 9 the control circuit of the control circuit of the exemplary embodiment of the present invention the control circuit of the other embodiments [Fig. 10] Operation diagram of other gas sensors [Fig. 11] Explanatory diagram of the fuzzy rule [Fig. 12] Explanatory diagram of the fuzzy table [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Gas sensor 2 Wide room switch 3 Normal room switch 4 Narrow room switch 5 Stop switch 6 Input / output control block 7 Motor control block 8 Motor 9 Power supply for backup 10 ZVP detection circuit 12 Memory 13 Remaining time display

Claims (1)

  Air purifier equipped with a sensor that detects dust, gas, etc., and automatically changes the motor air volume according to the output. It has a switch that allows the user to select the size of the room to be used. An air purifier that detects that the unit has been unplugged and prompts the user to reselect the room size.

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