JPH088969B2 - Air cleaner - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier that automatically operates by detecting smoke from indoor cigarettes.

2. Description of the Related Art A general configuration of a conventional air cleaner of this type will be described below with reference to the drawings.

In FIGS. 4, 5, and 6, the main body 1 has a built-in electric blower 2, and the air taken in through the front air inlet 3 passes through the pre-filter 4 and is ionized by the counter electrode 5 and the discharge wire 6. After the dust is adsorbed by the filter 7, it is discharged from the exhaust port 8. The remote control case 9 that is detachably attached to the upper part of the main body 1 has an operation switch 10
A display unit 11 is provided, and a gas sensor 12 for detecting that the room air is dirty is built in. Then, when the operation mode is set to the automatic mode by the operation switch 10, the output of the gas sensor 12 is input to the detection circuit 13 and is supplied to the power source.
The control circuit 16 connected to the control circuit 14 and the operation circuit 15 determines and controls the electric blower 2 and the display circuit 17. In other words, it turns ON when indoor dirt is detected, and turns OFF when it becomes clean.
The automatic driving is performed. In addition, 18 is a power cord.

Problems to be Solved by the Invention In the configuration of the conventional air purifier, when the automatic operation mode is set during nighttime sleep, the dirt in the room may be detected to operate the air purifier. The sound of the blower sometimes interfered with sleep.

Means for Solving the Problems In order to solve such problems, the air purifier of the present invention is a gas sensor for detecting dirt and the like in a room, and detects the light of the sun, a fluorescent lamp, or the like and disappears the light. An optical sensor that outputs a signal sometimes, an electric blower that generates an air flow for air cleaning, an operation switch that sets this electric blower to an automatic operation mode, and a signal output from the optical sensor in the automatic operation mode If there is no, automatically operate the electric blower according to the output of the gas sensor,
When a signal output from the optical sensor is received, the electric blower is provided with a control circuit for stopping the operation of the electric blower or controlling the electric blower to be in a weak operation.

Operation With the above configuration, when the light sensor detects that the indoor light is turned off at night when going to sleep, it does not perform automatic operation even if it detects dirt in the room, or operates only "weak" even if automatic operation is performed. It can be provided by an air purifier.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, an intake port 20 provided on the front surface of the main body 19
The air sucked from is discharged from the exhaust port 21 on the upper surface and adsorbs dust in the flow path. An electric blower 31 for generating an air flow is built in the main body 19 and arranged in the flow path between the filter 22 and the exhaust port 21. The electric blower 31 is driven by the operation of the operation switch 24 provided on the remote controller 23, and the indicator lamp 25 is turned on. This operation switch
24 is the one that can set the electric blower to the automatic operation mode.

Further, the main body 19 also has a control circuit 28 that performs automatic operation according to the outputs of the gas sensor 26 and the optical sensor 30 when the operation switch 24 is set to the automatic operation position. 27 is a power cord.

The circuit system will be described with reference to FIG. 2. The control circuit 28 connected to the power supply 32 drives the electric blower 31 by receiving a signal from the operation unit 33 including the operation switch 24. Light sensor
Reference numeral 30 is for detecting light from the sun or a fluorescent lamp and outputting a signal when the light disappears. For example, when the interior light is turned off at night, the signal is output. When the automatic operation is set, the output from the gas sensor 26 is input to the control circuit 28 via the detection circuit 29, and this value is input to the control circuit 28.
When the reference level stored in the above is exceeded and the signal is not output from the optical sensor 30, the control circuit 28 automatically operates the electric blower 31.

The operation of the above configuration will be described. Gas sensor 26
Output changes as shown in FIG. 3 according to the dirt in the room. That is, the output of the gas sensor 26 increases as the dirt inside the room increases. A to B in FIG. 3 are slightly dirty, and when set to automatic operation, the electric blower 31 is operated at "weak". Similarly, B to C are operated with "medium" due to moderate dirt, and C to D are operated with "strong" due to heavy dirt (the electric blower 31 has a higher operating noise as it is operated at "strong"). Noisy). However, at night, when the light in the room is turned off, the optical sensor 30 detects that it has become dark (that is, goes to bed) and outputs a signal.

The control circuit 28 receives the output from the gas sensor 26 and the detection device 29, and even if it judges that the output is the dirt or the dirt, the electric blower 31 receives the signal from the optical sensor 30. Do not drive, or drive only "weak" even if you drive. When the signal is not received from the optical sensor 30, the control circuit 28 controls the gas sensor 26 as described above.
The electric blower 31 is operated according to the output from the detection device 29.

EFFECTS OF THE INVENTION As described above, according to the present invention, the electric blower is not driven while sleeping, or is driven only “weakly”. You can get no air purifier.

[Brief description of drawings]

FIG. 1 is an external perspective view of an air cleaner according to an embodiment of the present invention, FIG. 2 is a block diagram of the same circuit, FIG. 3 is an output change diagram of a gas sensor, and FIG. 4 is a conventional air cleaner. FIG. 5 is a block diagram of the same circuit, and FIG. 6 is a side sectional view of the same. 19 …… Main body, 26 …… Gas sensor, 28 …… Control circuit, 30
...... Optical sensor, 31 ...... Electric blower.

Claims (1)

[Claims] 1. A gas sensor for detecting dirt and the like in a room,
An optical sensor that detects the light of the sun and fluorescent lights and outputs a signal when the light disappears, an electric blower that generates an air flow for air cleaning, and an operation switch that sets this electric blower to the automatic operation mode In the automatic operation mode, when there is no signal output from the optical sensor, the electric blower is automatically operated according to the output of the gas sensor, and when the signal output of the optical sensor is received, the electric blower Air cleaner having a control circuit for shutting down or controlling to a weak operation.