JPH0360539B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an air cleaner having a function of detecting indoor air pollution using a sensor and automatically operating the air cleaner.

BACKGROUND ART The 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 an electric blower 2 built in, and the air taken in from the intake port 3 on the front passes through a prefilter 4, and is passed through a counter electrode 5 and a discharge wire 6. After being ionized and having dust adsorbed by the filter 7, it is discharged from the exhaust port 8. A remote control case 9 detachably attached to the upper part of the main body 1 includes an operation switch 10 and a display section 11.
It also has a built-in gas sensor 12 for detecting that the indoor air is contaminated. When the operation is set to automatic mode by the operation switch 10, the output of the gas sensor 12 is detected by the detection circuit 13.
is input, this is judged by the control circuit 16 connected to the power supply 14 and the operation circuit 15, and the power supply 1 supplies voltage between the electric blower 2, the counter electrode 5, and the discharge wire 6.
4 and display circuit 17. In other words, it automatically turns on when it detects dirt in the room and turns off when the room is clean. Note that 18 is a power cord.

Problems to be Solved by the Invention In such a conventional air purifier with an automatic operation function, only the gas sensor 12 was used as a sensor, which was inconvenient for actual use. In other words, when air purifiers are mainly used for air purification when smoking, etc., after the cigarette is ignited and smoking begins, the smoke particles and gas components generated from the cigarette are diffused into the room. However, there is a problem in that a waiting time is physically necessary because the device does not start operating until it reaches the gas sensor 12. In addition, many common gas sensors have a heater part in their configuration, and after turning on the power, it takes several minutes for the temperature of the heater part to stabilize and stable output to be obtained. A waiting time was also required, and there was a problem that automatic operation using the gas sensor output was not possible during this time.

The present invention solves these problems,
The purpose is to provide an air purifier that is highly usable and uses a sensor that responds quickly.

Means for Solving the Problems In order to solve the above problems, the present invention includes a gas sensor, an ultraviolet sensor, and a control circuit that automatically operates an aircraft having a plurality of air volume settings based on the outputs of these sensors. For the output of the gas sensor, the air volume for automatic operation is selected according to the level, and for the output of the ultraviolet sensor, the air volume is switched to operate under certain set conditions regardless of the output level. It is something.

Effects According to the above-described configuration, the ultraviolet sensor instantly starts automatic operation at a predetermined air volume when the flame of a lighter, a stick, etc. is lit when trying to start smoking, and then when the smoke or gas diffuses, the The sensor automatically starts operating at a set air volume according to the concentration, so the ultraviolet sensor can immediately start operating at the standard air volume, and the gas sensor can continue operating according to the level of dirt. For this reason, it operates immediately in response to smoking and can continue appropriate automatic operation without waste.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The basic configuration of the air cleaner itself is the same as the conventional one, so the explanation will focus on the differences from the conventional example.

In FIG. 1, air taken in through an intake port 20 provided on the front surface of the main body 19 is discharged from an exhaust port 21 on the top surface, and a filter 22 provided in the flow path adsorbs dust in the inhaled air. It is something to do. An electric blower 32 that generates airflow is installed in the main body 1
9 and arranged in the flow path between the filter 22 and the exhaust port 21. This electric blower 32 is also driven by operating a manual switch 24 provided on the remote controller 23, and the indicator light 25 lights up. The remote controller 23 also includes a control circuit that performs automatic operation according to the outputs from the gas sensor 26 and the ultraviolet sensor 27 when the manual switch 24 is set to the automatic operation position. The ultraviolet sensor 27 is provided on the front surface of the main body 19. 28 is a power cord.

To explain the circuit system with reference to Figure 2, the power supply 29
A control circuit 30 connected to the switch 24
The electric blower 32 is driven by obtaining a signal from the operation circuit 31 including the above, and when automatic operation is set, the output from the gas sensor 26 is inputted to the control circuit 30 via the detection circuit 33. Similarly, the output from the ultraviolet sensor 27 is input to the control circuit 30 via the detection circuit 34, and the control circuit 30 automatically operates the electric blower 32 according to each input.
Here, the gas sensor 26 is mainly connected to the cigarette 35 when smoking.
The ultraviolet sensor 27 detects smoke and gas components, etc.
Detects the flame of a lighter 36 for lighting a cigarette 35.

To explain the operation in the above configuration, when automatic operation is set and the lighter 36 is pressed when trying to start smoking,
When the flame is ignited, an ultraviolet sensor immediately detects the flame, and when an input is input to the control circuit 30 via the detection circuit 34, the electric blower 32 starts operating. After starting smoking, the smoke from the cigarette 35 is detected by the gas sensor 26.
is detected, a signal is sent to the control circuit 30 via the detection circuit 33, and the electric blower 33 continues its operation.

Here, the ultraviolet sensor 27 and gas sensor 26
Fig. 3 shows the operating state of the system. gas sensor 2
If the smoke density increases with time as shown in FIG. 3a, the output of 6 will change according to the smoke density. For this reason, the operating level of the aircraft is varied depending on the concentration of smoke. In other words, the output when there is no smoke
With respect to V ₀ , as the smoke concentration increases, V ₁ , V ₂ ,
V ₃ and the output increases. The time at that time is t ₁ , t ₂ , t ₃
In this case, the driving ability is increased from "weak" to "medium" to "strong" at each point in time. Also,
The ultraviolet sensor 27 generates a pulse output due to the ultraviolet component when a flame is generated, and when the flame is extinguished, no pulse is generated. Therefore, as shown in FIG. 3b, the operation is performed for a predetermined time from the time when the pulse is generated.
At this time, since the presence or absence of flame is detected, it is unknown how much air pollution will be generated afterwards, so operating at maximum capacity is a big loss. However, when the air purifier operates, airflow in the room is generated toward the intake port 20, so the time required for the gas components to reach the gas sensor 26 can be shortened. Therefore, the ultraviolet sensor 27, which detects the start of smoking, etc., operates the electric blower 32, etc. at below standard capacity, and the output of the gas sensor 26 allows quantitative detection. It is an economical and efficient device that can switch the capacity to operate the device, and economically and efficiently, it starts operation almost at the same time as smoking starts, and has an automatic operation function that can start and stop depending on the degree of air pollution. be.

Effects of the Invention As described above, according to the present invention, an ultraviolet sensor and a gas sensor are used together, the ultraviolet sensor emphasizes quick response and starts operation at an economical level, and the gas sensor starts operation according to the degree of dirt. By operating at low level, it is possible to economically and efficiently obtain a responsive automatic operation function, and furthermore, as a result of the operation with the ultraviolet sensor, the time required for the gas components to reach the gas sensor is reduced. This makes it possible to obtain an air purifier with a good automatic operation function.

[Brief explanation of drawings]

FIG. 1 is an external perspective view of an air purifier according to an embodiment of the present invention, FIG. 2 is a circuit block diagram of the same, and FIG.
Figures a to c are timing diagrams showing the same partial operations;
The figure is an external perspective view of a conventional air cleaner, FIG. 5 is a circuit block diagram of the same, and FIG. 6 is a side sectional view of the same. 26... Gas sensor, 27... Ultraviolet sensor, 30... Control circuit, 32... Electric blower.

Claims (1)

[Claims] 1. A gas sensor that detects indoor air pollution, an ultraviolet sensor that detects the start of smoking, etc.
It has a control circuit that automatically operates equipment with multiple air volume settings based on the outputs of these sensors,
According to the output level of the gas sensor, the air volume during automatic operation is selected and operated,
This air purifier operates under certain set conditions regardless of the output level of the ultraviolet sensor. 2. The air purifier according to claim 1, wherein the air volume set for the output of the ultraviolet sensor is set to a position other than the maximum air volume.