JPH0777629B2 - Air cleaner - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier having a function of detecting dirt of indoor air by a sensor and performing automatic operation.

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. 3, 4, and 5, the main body 1 has a built-in electric blower 2. The air sucked from the front air intake port 3 passes through the pre-filter 4, is ionized by the counter electrode 5 and the discharge wire 6, adsorbs dust by the filter 7, and then is exhausted from the exhaust port 8. The remote control case 9 that is detachably attached to the upper part of the main body 1 is provided with an operation switch 10 and a display unit 11, and also has a built-in gas sensor 12 for detecting that the room air is dirty. When the operation is set to the mode, the output of the gas sensor 12 is input to the detection circuit 13, and the control circuit 16 connected to the power supply 14 and the operation circuit 15 makes a judgment, and the electric blower 2, the counter electrode 5 and the discharge line High-voltage power supply 15 for supplying voltage between 6 and display circuit 17
The automatic operation is controlled so that it is turned on when dirt in the room is detected and turned off when it becomes clean. In addition, 18 is a power cord.

Problems to be Solved by the Invention In such a conventional air purifier, the gas sensor 12 is used as a sensor to detect the degree of air pollution in the room, so smoking is a particular problem at home. Even in the same room, depending on the positions of the smoker and the air purifier, the smoke gradually diffuses, and it takes some time to reach the sensor. The smaller the time, the longer the time, and the user may start smoking and may not operate until the smoke fills the room, resulting in low usability.

The present invention solves such a problem, and an object of the present invention is to provide an air cleaner having an automatic driving function that starts operation immediately after smoking starts.

Means for Solving the Problems To achieve the above object, the present invention provides an ultraviolet sensor for detecting ultraviolet rays from a flame such as a lighter, a main body having an electric blower, and an electric motor based on a detection signal of the ultraviolet sensor. A control circuit for controlling the operation of the blower is provided, and the control circuit operates the electric blower when the flame of the lighter or the like is detected by the ultraviolet sensor.

Operation According to the above configuration, when the user tries to start smoking and ignites the lighter or the match, the ultraviolet sensor detects the ultraviolet rays generated from the flame of the lighter or the like. When the ultraviolet sensor detects ultraviolet rays, the control circuit operates the electric blower and the air cleaning operation is started.

Example Hereinafter, the example will be described with reference to the drawings.

In FIG. 1, an intake port 20 is provided on the front surface of the main body 19, an exhaust port 21 is provided on the upper surface, and a filter 22 is provided in the ventilation path connecting these. The remote controller 23 detachably attached to the main body 19 includes a switch 24, a display unit 25, and a first unit.
A gas sensor 26 is provided as a sensor for the.
An ultraviolet sensor 27 as a second sensor is provided on the front surface of the main body 19. 28 is a power cord. In FIG. 2, a power source 29 is connected via a control circuit 30 to an operation circuit 31 incorporated in the remote controller 23, and operates an electric blower 32 located downstream of the filter 22. Further, the detection circuit 33 of the gas sensor 26 and the detection circuit 34 of the ultraviolet sensor 27 are also connected to the control circuit 30, and in the automatic operation mode, the electric blower 32 is operated according to the outputs of these sensors.

Explaining the operation in the above configuration, when the user tries to start smoking in the state where the automatic driving mode is set, when the lighter 36 or the match is ignited, the ultraviolet component thereof is incident on the ultraviolet sensor 27 and the detection circuit. The control circuit 30 operates the electric blower 32 via 34 and continuously stops the electric blower 32 for a certain period of time, while the smoke of the cigarette 35 is detected by the gas sensor 26.
When the signal reaches the control circuit 30, the signal is input to the control circuit 30 via the detection circuit 33, the electric blower 32 is driven in a state corresponding to the input of the gas sensor 26, and the gas sensor 26 deny the presence of smoke. Be stopped. In addition, the electric blower 32 can be driven in the same manner even when there is no flame or when the gas sensor 26 alone operates.

In this way, by using the ultraviolet sensor 27 and the gas sensor 26 together, the automatic operation is started from the time when the ignition of the lighter or the like is detected to start smoking, and the smoke is inhaled before the gas component reaches. Purification is promoted by solving the problem that the air purifier starts to operate after the room is filled with smoke, thus improving usability.

EFFECTS OF THE INVENTION As described above, according to the present invention, by providing the ultraviolet sensor for detecting the flame of the lighter or the like, the lighter for smoke purification at the time of smoking, which is one of the largest uses of the air cleaner. Since it is possible to start automatic operation by detecting flames such as, it is possible to start purification at the same time as smoking starts, prevent smoke from filling the room and automatically operate without being greatly affected by room size. It can provide an air purifier that can also detect ultraviolet rays in the high energy wavelength range, so even flames such as lighters and cigarettes can be reliably detected from a distant position, and UV rays can be detected over a wide area of the room. The occurrence state of can be detected. Furthermore, ultraviolet rays do not generate from the red heating element unless there is a flame, so it is possible to prevent erroneous detection of heating elements such as heaters in the room, and thus even in the winter when the room is completely closed, Accurate automatic operation of the purifier. Further, although sunlight is inserted into the room, since the ultraviolet rays of the sunlight are extremely reduced by the window glass, there is no malfunction due to the ultraviolet rays of the sunlight.

[Brief description of drawings]

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 electric circuit, FIG. 3 is an external perspective view of a conventional air cleaner, and FIG. 4 is a sectional view of the same. FIG. 5 is a block diagram of the electric circuit. 26 …… Gas sensor, 27 …… UV sensor, 32 …… Electric blower.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsunori Zaizen 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Masao Fukunaga 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. An ultraviolet sensor for detecting ultraviolet rays from a flame such as a lighter, a main body having an electric blower, and a control circuit for controlling the operation of the electric blower based on a detection signal of the ultraviolet sensor. The circuit is an air purifier configured to drive the electric blower when a flame such as a lighter is detected by an ultraviolet sensor.