JPH1183100A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the indoor oxygen concentration from lowering without being recognized to bring about an oxygen starvation state at the time of using an air cleaner. SOLUTION: This air cleaner comprises an oxygen sensor 15 for detecting the indoor oxygen concentration, and means for informing the fact that the detected oxygen concentration dropped below a specified level, i.e., an indicating section 16 and a buzzer. The indicating section 16 comprises four indication lamps a-d being lighted stepwise depending on the output value from the oxygen sensor 15. When the air cleaner is operated to clean the indoor air, indoor oxygen concentration is detected by the oxygen sensor 15 and the detected oxygen concentration drops below a specified level, the indication lamps a-d are lighted entirely and the buzzer is actuated to urge ventilation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention
The present invention relates to an air purifier that collects pollutants such as smoke, dust and dust in the air, purifies the air, and discharges the air.

[0002]

2. Description of the Related Art Conventionally, this type of air purifier is often installed and used in a closed meeting room or a room of a general home where air is easily contaminated by smoking or the like. In such a conference room or the like, if the air becomes dirty due to cigarette smoke or the like, the room is usually ventilated appropriately when the air becomes dirty.

[0003]

However, conventionally, when an air purifier is installed and used in a closed room as described above, since the air in the room is purified, for example, a large number of air purifiers are used. If a person chats for a long time or uses a device that easily consumes oxygen, such as a stove, the oxygen concentration in the room may drop over time and become deficient in oxygen without knowing. was there.

[0004]

Therefore, an air purifier according to the present invention has an oxygen sensor 1 for detecting the oxygen concentration in a room, as shown in the following embodiment, for example.
And a notifying unit such as a display unit 16 or a buzzer 18 for notifying when the oxygen concentration detected by the oxygen concentration detecting unit has become equal to or less than a predetermined value and prompting ventilation in the room. , Characterized in that.

[0005] In use, the air in the room is cleaned and the oxygen concentration detecting means detects the oxygen concentration in the room. When the oxygen concentration detected by the oxygen concentration detecting means falls below a certain value, a notification is issued. Notify by means to encourage indoor ventilation.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic front view of an air purifier according to an embodiment of the present invention.

This air purifier is, for example, a wall-mounted type, has a slightly flat box-like outer shape, has an intake port (not shown) on the bottom face, has an exhaust port 10 on the upper front side, and has various types on the lower front side. An operation panel 11 having switches and the like is provided.

In this air purifier, an air flow path is formed inside the air purifier, which leads from the intake port to the exhaust port 10, and the air flow path is not shown in the order from the intake port to the exhaust port 10. However, for example, a dust collector, a deodorizing filter, a fan and the like are provided.

In use, when the start switch is pressed to rotate the fan and a high voltage is applied to the dust collector, air is sucked from the intake port, and contaminants such as smoke, dust and dust in the air are removed. The dust is collected electrostatically to purify the air, deodorized by a deodorizing filter, and discharged from the exhaust port 10.

In the above-described air purifier, for example, an oxygen sensor ("oxygen concentration detecting means" in the present invention) for detecting the oxygen concentration in a room with a detection surface facing the outside next to the operation panel 11, for example. 15 is provided. Further, a display section 16 for displaying the oxygen concentration detected by the oxygen sensor 15 is provided on the operation panel 11. The display unit 16 includes four display lamps a to d arranged vertically in the drawing.

[0011] Then, as shown in FIG.
The oxygen sensor 15 is connected to a CPU 17 that controls the entire operation, and a display unit 16 is connected to the CPU 17 and a buzzer 18 is connected. The buzzer 18 and the display unit 16 are "notification means" in the present invention.

In this air purifier, when used,
While purifying the air as described above, the oxygen sensor 1
In step 5, the oxygen concentration in the room is detected and converted into an electrical value by the CPU.
17 is output. Then, according to the output value from the oxygen sensor 15, the display lamps a to d are turned on stepwise to display the oxygen concentration.

In this case, for example, FIG. 3 shows an example of the relationship between the lapse of time t (horizontal axis) in a certain room and the output value v (vertical axis) of the oxygen sensor 15. In the above case, only the lowermost display lamp a is turned on. The display lamps a.
b is lit, and the display lamps a, b, c
Lights up to alert the user that the oxygen concentration is decreasing.

Then, when it goes down to the following,
All the display lamps a to d are turned on, and the buzzer 18 is sounded to urge the ventilation of the room.

In the illustrated embodiment, the indoor ventilation is notified by both the light of the display lamp and the sound of the buzzer.
Either one may be sufficient. Also, instead of the indicator lamp,
For example, notifying with the character by the liquid crystal and the buzzer,
It can also be announced by voice.

The above-described configuration in which the oxygen concentration is detected by the oxygen concentration detecting means to promote indoor ventilation can be widely applied to air conditioning equipment such as a fan heater.

[0017]

Therefore, according to the first aspect of the present invention, the oxygen concentration in the room is detected at the time of use, and when the oxygen concentration falls below a certain value, it is notified to promote the ventilation in the room. So, when using the air purifier,
It is possible to prevent the oxygen concentration in the room from being reduced to an oxygen-deficient state without knowing beforehand.

[Brief description of the drawings]

FIG. 1 is a schematic front view of an air purifier according to the present invention.

FIG. 2 is a block diagram showing an electrical configuration of a mechanism for notifying the lack of oxygen in the air purifier.

FIG. 3 is a graph showing an example of a relationship between a lapse of time and an output value of an oxygen sensor in the air purifier.

[Explanation of symbols]

 15 Oxygen sensor (oxygen concentration detecting means) 16 Display unit (notifying means) 18 Buzzer (notifying means)

Claims (1)

[Claims] 1. An oxygen concentration detecting means for detecting an oxygen concentration in a room, and a notifying means for notifying when the oxygen concentration detected by the oxygen concentration detecting means has become equal to or less than a predetermined value, thereby promoting ventilation in the room. Air cleaner.