JPH0362466B2 - - 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 the degree of pollution of indoor air 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. 5, 6, and 7, a main body 1 has an electric blower 2 built-in, and air taken in from an intake port 3 on the front side passes through a prefilter 4, and is passed through a counter electrode 5 and a discharge wire 6. After being ionized and adsorbing dust by a filter 7, it is discharged from an 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 1.
1 and a built-in gas sensor 12 for detecting that the indoor air is contaminated. Then, when operation is set to automatic mode, gas sensor 1
The detection circuit 13 detects the output of power supply 1.
A control circuit 16 connected to 4 makes the judgment and controls the electric blower 2 , the high-voltage power supply 15 that supplies voltage between the counter electrode 5 and the discharge line 6 , and the display circuit 17 .
This allows the aircraft to shut down when dirt is detected inside the room.
It is an automatic operation that turns on the water and turns off when the water is clean. Note that 18 is a power cord.

Problems to be Solved by the Invention In such technology, the gas sensor itself reacts not only to gas but also to humidity, so it reacts and operates when the humidity increases even if the indoor air is not polluted. Additionally, there is a problem in that when the air cleaner is operated under high humidity conditions, the performance of the deodorizing agent applied to the filter is also reduced.

The present invention is intended to solve these problems, and it is an object of the present invention to provide an air cleaner that eliminates the adverse effects of humidity.

Means for Solving the Problems In order to solve the above problems, the air purifier of the present invention includes a gas sensor that detects the degree of pollution of indoor air, a humidity sensor that detects indoor humidity, and an output of the gas sensor. a first detection means for outputting a signal according to the output of the humidity sensor; a second detection means for outputting a signal according to the output of the humidity sensor; and a control level updated according to the output of the second detection means and the output of the first detection means. The apparatus includes a control means for performing automatic operation control by comparing the two, and an electric blower operated by the output of the control means.

Effect According to the above configuration, the humidity sensor detects the humidity in the room, and the control level of the gas sensor is updated at any time based on the detected level, thereby eliminating malfunctions due to humidity, and thereby also preventing performance deterioration of filters, etc. It is.

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

Note that, here, descriptions of parts common to conventional air cleaners will be omitted, and only parts that are different will be mainly described.

An electric blower 24 is built into the main body 26, and a gas sensor 19, a humidity sensor 21, and an intake port 27 are provided on the front surface. The air taken in from the intake port 27 passes through the prefilter 28 and is connected to the counter electrode 29 and the discharge wire 3.
After adsorbing dust and foreign odors with a filter 31 that is ionized by 0 and uses a deodorizer,
It is discharged from the exhaust port 32. A remote control case 33 detachably attached to the upper part of the main body 26 is provided with an operating switch 34 and a display section 35. The first detection means 20 inputs the output of the gas sensor 19 for detecting that the indoor air is contaminated, and the second detection means 22 inputs the output from the humidity sensor 21, and the control means connected thereto. 23 updates the control level L according to the output of the second detecting means 22, compares the level with the output from the first detecting means 20, and if it is equal to or higher than the updated level, the indoor air is removed by the gas. It is determined that it is dirty and the electric blower 24 is operated. After that, it will automatically turn off when it is cleaned.

Next, the operation of one embodiment of the present invention will be explained.

The degree of pollution of the indoor air is detected by the gas sensor 19 (Fig. 3a), and the humidity sensor 21
(Fig. 3b), the output of the humidity sensor 21 is classified into a plurality of levels (for example, four levels A to D) as shown in Fig. 3b. Then, the second detection means 22 determines the level of the output of the humidity sensor 21 and outputs the signal to the control means 23. Figure 3b
So, between T ₁ is A level, between T ₂ is B level, between T ₃ is C level, between T ₄ is D level, between T ₅ is C level,
Between T ₆ is B level. Control means 2
3, the control level L is updated, and automatic operation is performed while comparing it with the output of the first detection means 20.

For example, if the humidity sensor output is at level A between _T1 and the control level L is set to _L1 , if the humidity sensor output is at level B between _T2 , the control level L will be set to _L2. Updated. Similarly T ₃
When the control level reaches the C level and D level between T4 _{and T4} , the control level L is sequentially updated to _L3 and _L4 . Also
Since the control levels are at C level and B level during _T5 and _T6 , respectively, the control level L is also updated to _L3 and _L2 .

In this way, depending on which level A to D the humidity sensor output is at, the control level L is L ₁
~L will be updated to ₄ . When the output of the gas sensor 19 exceeds the updated control level L due to contaminated air, that is, if the control level L at that time is, for example, _L2 , the electric blower ₂₄ is activated to blow the air. Purification is carried out.

Effects of the Invention As is clear from the above embodiments, the air cleaner of the present invention uses a humidity sensor to update the control level of the control means, prevents malfunctions due to the influence of humidity, and thereby prevents the filter, etc. This can also prevent performance deterioration.

[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, Fig. 3a,
b is an output diagram of a gas sensor and a humidity sensor, FIG. 4 is a side sectional view of an air cleaner according to an embodiment of the present invention, and FIG.
6 is a side sectional view of the conventional air cleaner, and FIG. 7 is a circuit block diagram of the conventional air cleaner. 19... Gas sensor, 20... First detection means,
21...Humidity sensor, 22...Second detection means, 2
3...control means, 24...electric blower.

Claims (1)

[Claims] 1. A gas sensor that detects the degree of pollution of indoor air, a humidity sensor that detects indoor humidity, a first detection means that outputs a signal based on the output of the gas sensor, and a second detection unit that outputs a signal based on the output of the humidity sensor. means, a control means for updating the control level according to the output of the second detection means and comparing it with the output of the first detection means to perform automatic operation control, and an electric blower operated by the output of the control means. Air purifier with.