JPH071109B2 - Indoor air cleaning method - Google Patents

Description

The present invention relates to a method for cleaning indoor air. For more information,
The present invention relates to a method for cleaning indoor air in which at least the amount of state of humidity among factors affecting the pollution of indoor air, such as carbon dioxide, humidity, and dust, is improved by a ventilation device.

[Background technology and its problems]

Recently, with the increase in airtightness of houses, the occurrence of dew condensation, mold, mites, etc., and allergic diseases caused by pollen, etc. are increasing. Therefore, the quality of indoor air has become a problem.

Generally, air pollution factors include carbon dioxide, humidity, dust, odor, fungi, and toxic gas, but air pollution factors in a general room include carbon dioxide, humidity, dust, and odor.

Therefore, when constructing a system that tries to keep the state quantities of these factors always in a good state, for example, a ventilation device for the oximeter, a dehumidifier and superhumidifier for the hygrometer, and an air purifier for the dust meter are used. However, it is conceivable that each of them is interlocked, but it is economically burdensome to have all of these devices.

By the way, basically, if ventilation is performed, the state quantities of all factors can be improved. However, when it is attempted to improve the state quantities of each of these factors only by ventilation, humidity, in particular, may not be improved depending on the condition of the outside air, but may be rather deteriorated. That is, in the case where the outside air humidity is higher than the indoor humidity and the like, the indoor humidity becomes higher when the ventilation is performed, which is worse than the previous state.

[Object of the Invention]

An object of the present invention is to eliminate such drawbacks of the related art and to improve at least the humidity state quantity by ventilation among factors influencing the pollution of indoor air in a room that does not deteriorate even in the state of outside air. It is to provide a method for cleaning air.

[Means and Actions for Solving Problems]

In the present invention, in a method for cleaning indoor air in which at least a humidity state quantity is improved by a ventilation device among factors that affect indoor air pollution, the humidity state quantity is detected, and the detected state quantity is preset. When the detected value exceeds the allowable limit, the detected state quantity is stored and then the ventilation device is activated.

Then, after the ventilator operates for a certain period of time, the state quantity of humidity is detected again, and the operation of the ventilator is stopped on condition that the detected state quantity is within the allowable limit.

On the other hand, when the detected state quantity is higher than the upper limit value of the allowable limit, the operation is continued while the ventilation device is operated on condition that the detected state quantity is not more than the stored state quantity, and the detected state quantity is stored. When the state quantity is exceeded, the operation of the ventilation system is stopped for a predetermined time.

Further, when the detected state quantity is lower than the lower limit value of the allowable limit, it is compared with the stored state quantity, and the operation of the ventilation device is continued under the condition that the detected state quantity is not less than or equal to the stored state quantity, and the detected state quantity is stored. It is intended to achieve the above object by stopping the operation of the ventilation device for a predetermined time when the state quantity is equal to or less than the state quantity.

〔Example〕

An embodiment of a cleaning system to which the method of the present invention is applied will be described below with reference to the drawings. Usually, carbon pollutants, humidity, dust, and odor are considered as the air pollutants in the general room as described above, but since the increase of carbon dioxide is approximately proportional to the decrease of oxygen, it can be substituted for the measurement of oxygen amount. Further, since the source of odor in the general room is mainly due to human body or cigarette, it can be replaced by the amount of carbon dioxide and dust. In the present embodiment, among a plurality of types of factors that affect the pollution of indoor air, the purification having both a ventilation function and an air cleaning function is based on the three factors of dust due to oxygen, humidity, dust, tobacco, and other smoke. Drive the device.

FIG. 1 shows an overall block diagram of this embodiment. In the figure, 1A is an oxygen sensor, 1B is a humidity sensor, and 1C is a dust sensor. It should be noted that since the smoke of cigarettes has a large specific gravity in the dust in the general room, it is preferable that the dust sensor 1C can detect it, but a miscellaneous gas sensor is used here. The state quantity data of each factor detected by each of these sensors 1A to 1C is sequentially read into the arithmetic and control unit 2 at a predetermined timing.

The arithmetic and control unit 2 includes a memory for storing constants and various numerical values given from the input unit 3 and various timers (not shown), and executes the process shown in FIG. 5 according to a preset procedure. First, each data detected by each sensor 1A-1C and the standard value of each factor, here oxygen 21%, humidity 50%,
The difference from dust 0 mg / m ³ is obtained as the number of steps and displayed on the display device 4. Then, the number of steps of each data is multiplied by the weighting factor of each factor to obtain the contamination frequency for each factor, and the sum of the contamination frequencies is subtracted from the reference value to obtain the evaluation index, which is displayed on the display device 4. To do. In addition, it is determined whether or not each data is within the permissible limit at regular time intervals, and if any of the data is out of the permissible limit, the ventilation command signal or the purification command signal is output to the purifying device 9 and the evaluation is performed. It is determined whether or not the index is below the reference point, and if the evaluation index is below the reference point, an operation command signal is output to the purification device 9.

The display device 4 includes an oxygen data display 5 for displaying oxygen data, a humidity data display 6 for displaying humidity data, a dust data display 7 for displaying dust data, and an evaluation index for digitally displaying an evaluation index. A display device 8 is provided. The evaluation index display 8 indicates the cleanliness of air from 1 to 10
It can be displayed with an index up to. For example, index 9-
10 means "comfortable", 8 means "appropriate", 7 means "somewhat bad", 6 means "poor", and 5 or less means "invincible".

As shown in FIG. 2 (A), the oxygen data indicator 5 has ten light-emitting diodes D _{1 to} D ₁₀ arranged in a line, and an oxygen concentration of 21% or more to 19.65% or less is measured every 0.15%. It can be displayed in stages. That is, when the oxygen concentration is 21% or more, only the diode D ₁ is turned on, and the oxygen concentration is 0.
Each time the voltage drops by 15%, the diodes D _{2 to} D ₁₀ are sequentially turned on.
At this time, the diodes D _{1 to} D ₃ are green and the diodes D _{4 to} D ₇ are green.
The yellow diode D ₈ to D ₁₀ is because it is colored respectively red, can be diode during lighting is a measure of evaluation by it belongs to what color region.

As shown in FIG. 2 (B), the humidity data indicator 6 has ten light emitting diodes D _{1 to} D ₁₀ arranged in a line, and a range of humidity 10% or less to 90% or more for every 10%. It can be displayed in 10 levels. That is, when the humidity is 50%, the diodes D ₅ and D ₆
Lights up, and each time the humidity rises 10% with 50% as the reference, the diodes D _{7 to} D ₁₀ turn on and the diodes D ₄ to D ₁₀ turn on every 10% decrease.
₁ lights in order. In this case, the diodes D ₅ , D ₆ are colored green, the diodes D ₃ , D ₄ , D ₇ , D ₈ are colored yellow, and the diodes D ₁ , D ₂ , D ₉ , D ₁₀ are colored red. Therefore, this color coding can be used as a reference for evaluation.

Dust data display 7, as shown in FIG. 2 (C), the 10 light emitting diodes D ₁ to D ₁₀ in which are arranged in a row, the dust amount 0.05 mg / m ³ or less ~0.45mg / m ³ or more Range of 0.05 mg / m ³
10 steps can be displayed for each. This means that only the diode D ₁ in the following quantity of dust 0.05 mg / m ³ is turned, the amount of dust 0.05 mg / m ³ diode D ₂ to D ₁₀ each increase is turned in order based on the 0 mg / m ^3. The colors of the diodes D _{1 to} D ₁₀ are the same as those of the humidity data indicator 5.

The purifying device 9 is configured so that the air cleaning function works when a cleaning command signal is given from the arithmetic and control unit 2, and the air cleaning function and the ventilation function work at the same time when a ventilation command signal or an operation command signal is given. There is. Specifically, the third
It is configured as shown in FIG. 4 and FIG. That is, on the front side (inside the room) of the flat box-shaped casing 11, the panel is
11A is attached and the suction port 1 is on the top of it.
2 and an outlet 13 is provided at the bottom. The suction port 12 and the blowout port 13 are opened over the entire width of the casing 11, and a plurality of crosspieces 14 are attached to the opening surface over the entire width in the lateral direction.

Inside the casing 11, the filter 15, the cleaner body 16,
An air purifier 18 including a sirocco fan 17 and a motor (not shown) that drives the sirocco fan 17 is installed. The air purifier 18 operates when any of the ventilation command signal, the purification command signal and the operation command signal is given from the arithmetic and control unit 2. Then, as in the conventional air purifier, dirty air in the room is sucked in through the suction port 12, dust and odor are filtered through the filter 15 and the purifier body 16, and then the air outlet 13
The purified air is circulated indoors.

On the back side of the casing 11, an intake port 21 for the outside air is formed in a part of the back surface of the suction port 12, and an exhaust port 22 is formed in a part of the back surface of the blowout port 13. The suction port 12
In the upper space S1 of the air intake port 21
A damper 23 that opens and closes the upper part of the top plate 11 of the casing 11
It is rotatably attached to B. Further, in the lower space S2 of the air outlet 13, a damper 24 that adjusts the exhaust amount of air and opens and closes the exhaust port 22 has its lower portion at the bottom plate 11C of the casing 11.
Is rotatably attached to. Each of these dampers 23,2
4, the one side part is adapted to rotate while being sandwiched between the inner surface of the side plate 11D of the casing 11 and the other side part by the partition plates 25 provided in the respective spaces S1, S2 of the casing 11. In addition, each intake port 21, exhaust port 22 when rotated to the back side
Can be closed. Further, these dampers 23, 24 are always rotated to the rear side, but when a ventilation command signal or an operation command signal is given from the arithmetic and control unit 2, the damper switching device (see FIG. 1) is operated. It is adapted to be rotated to a substantially central position through. damper
When the air purifier 18 is operated with the 23 and 24 rotated substantially in the center, the outside air is taken in through the intake port 21 and blown out into the room through the filter 15 and the purifier body 16, and at the same time, the purifier body Part of the air that has passed through 16 is exhausted from the exhaust port 22. That is, ventilation is performed at the same time as cleaning the air.

Next, the operation of this embodiment will be described with reference to the flow chart of FIG.

In the arithmetic and control unit 2, first, when the set time of the timer T ₅ (for example, 3 seconds) has elapsed, the oxygen data X detected by the oxygen sensor 1A is read, and the difference between the oxygen data X and the standard value (21%) is read. obtains the number of steps S _X divided in advance by the set step size (0.15%), and oxygen is displayed according to the number of steps S _X. That is, the diodes D _{2 to} D ₁₀ of the oxygen data display 5 are sequentially turned on for the number of steps S _x . Therefore, the number of the diodes D _{1 to} D ₁₀ to be turned on is increased or decreased depending on the oxygen concentration, and the oxygen state can be confirmed by the length thereof.

Next, on condition that the set time of the timer T ₁ has not elapsed, the humidity data Y detected by the humidity sensor 1B is read, and the difference between the humidity data Y and the standard value (50%) is set in advance. obtains the number of steps S _Y divided by the width (10%), and humidity displayed according to the number of steps S _Y. That is,
If the number of steps S _Y is +, only diode D ₇ to D ₁₀ The number of the step number S _Y, the number of steps S _Y is - if, as many diode D ₄ to D ₁ of the step number S _Y Light up in order. Thus, humidity is higher if the diode D ₇ to D ₁₀ based on the 50%, the diode D ₄ to D ₁ is turned if low, to check the humidity state by the lighting direction and the number of diodes D ₁ to D ₁₀ You can

Next, the dust data Z detected by the dust sensor 1C is read on the condition that the set time of the timer T ₂ has not elapsed, and the difference between the dust data Z and the standard value (0 mg / m ³ ) is determined by the step width. obtains the number of steps S _Z divided by (0.05mg / m ^3), to dust displayed according to the number of steps S _Z. That is, as many as the number of steps S _Z , the diodes D _{2 to} D of the dust data display 7
Turn on ₁₀ . Accordingly, the number of diodes D ₁ to D ₁₀ to be turned by the dust amount is increased or decreased, it is possible to check the dust state by its length.

Next, the indoor air evaluation index is obtained on condition that the set time of the timer T ₃ has not elapsed. This is done by multiplying each step number S _X , S _Y , S _Z obtained by the above-mentioned process by the weighting factor A, B, C for each factor to obtain the contamination frequency for each factor,
The sum of these contamination frequencies is subtracted from the reference value (10) to obtain the evaluation index. That is, the evaluation index = 10− (AS _X + | BS _Y | + CS _Z ). However, A; 1.5, B; 2, C; 1. Then, the obtained evaluation index is digitally displayed on the evaluation index display 8. Therefore, the cleanliness of the indoor air can be grasped from the numerical value displayed on the evaluation index display 8.

Next, on condition that has not passed the set time of the timer T _4, and repeats the above described processing returns to the initial processing. Therefore, the state quantities of the respective factors can be known from the respective data displays 5, 6, 7 and the overall evaluation of the indoor air can be known from the evaluation index display 8.

Now, in the processing of oxygen data, when the set time of the timer T ₁ elapses, the oxygen data X continues to the allowable limit (20.5
%) Is less than or equal to. If it is not below the allowable limit, stop the ventilation command signal, and then
Turns on T ₁ for 10 minutes. On the other hand, when it is less than the allowable limit, the ventilation command signal is output to the purification device 9. Then, the air cleaner 18 is operated with the dampers 23, 24 being rotated in the center, so that the ventilation function and the air cleaning function work. After that, the timer T ₁ is turned on for a set time of 3 minutes.

Therefore, it is judged every 10 minutes whether or not the oxygen data X is below the allowable limit, and when the oxygen data X is below the allowable limit, the ventilation command signal is output to the purifying device 9 to activate the ventilation function and the air cleaning function for 3 minutes. After that, it is judged again whether or not the oxygen data X is below the allowable limit. If the oxygen data X is not below the allowable limit, the ventilation command signal is stopped, and 10 minutes later, it is again judged whether or not the oxygen data X is below the allowable limit. The determination process will be repeated.

In the processing of the humidity data, when the set time of the timer T ₂ elapses, the humidity data Y continues to show the allowable upper limit value (60
%), The humidity data Y is below the allowable lower limit (40
%) Is lower than the above. Here, the humidity data Y is less than or equal to the allowable upper limit value (60%) and is less than the allowable lower limit value (40%).
%) Or more, the ventilation command signal is stopped and the humidity data Y ′ is cleared, and then the timer T ₂ is turned on for a set time of 10 minutes. Therefore, the process of determining whether the humidity data Y is within the allowable limit is repeated every 10 minutes.

On the other hand, if it is higher than the allowable upper limit (60%), then
It is determined whether or not the humidity data Y'is stored. If the humidity data Y'is not stored, after storing the humidity data Y as Y ', the ventilation command signal is output to the purification device 9 to activate the ventilation function and the air cleaning function, and then the timer T ₂ is set to the set time. It turns on after 3 minutes and proceeds to the dust data reading process. If the humidity data Y'is stored, then the humidity data Y is compared with the stored humidity data Y '. Here, 'be not less than, humidity data Y' humidity data Y is stored humidity data Y after clearing, turns on the timer T ₂ as the set time of 3 minutes proceeds to processing of reading dust data, humidity data Y is 'equal to or greater than, the ventilation command signal is stopped, the humidity data Y' storage humidity data Y after clearing, turns on the timer T ₂ as the set time of 20 minutes proceeds to processing of reading dust data.

On the other hand, if it is lower than the allowable lower limit value (40%), it is subsequently determined whether or not the humidity data Y'is stored. If the humidity data Y'is not stored, after storing the humidity data Y, the ventilation command signal is output to the cleaning device 9 to activate the ventilation function and the air cleaning function, and then the timer T ₂ is set to 3 minutes. Turn on and proceed to the reading process of dust data.
If the humidity data Y'is stored, then the humidity data Y is compared with the stored humidity data Y '. Here, 'if less, humidity data Y' humidity data Y is stored humidity data Y after clearing, turns on the timer T ₂ as the set time of 3 minutes proceeds to processing of reading dust data, humidity data Y is If it is less than the stored humidity data Y ', the ventilation command signal is stopped, the humidity data Y'is cleared, and then the timer T ₂
Is turned on for a set time of 20 minutes and proceeds to the dust data reading process.

Therefore, it is judged every 10 minutes whether or not the humidity data Y is within the allowable limit. If the humidity data Y is out of the allowable limit, the humidity data Y at that time is stored as Y ', and then the ventilation command signal is output and 3 After a minute, it is determined whether the humidity data Y is within the allowable limit. At this time, if the humidity data Y is within the allowable limit, the ventilation command signal is stopped, but if it is still outside the allowable limit, it is compared with the previously stored humidity data Y '.
Then, if it is improved from the previous state, it continues to output the ventilation command signal, judges whether the humidity data Y is within the allowable limit after 3 minutes, and when the humidity data Y is within the allowable limit, the ventilation command is issued. Stop the signal. On the contrary, if it is not improved from the previous state, the ventilation command signal is stopped, 20 minutes later, it is determined whether the humidity data Y is within the allowable limit, and the above-described processing is repeated.

Also, in the processing of dust data, when the set time of timer T ₃ elapses, the dust data Z continues to the allowable limit (0.15 mg
/ m ³ ). Acceptable limit (0.15mg /
In the case of m ³ ) or less, the timer T ₃ is turned on for a set time of 10 minutes after performing the process of stopping the purification command signal and the ventilation command signal and the process of clearing the dust data Z ′. Therefore,
The process of determining whether the dust data Z is higher than the allowable limit is repeated every 10 minutes.

On the other hand, if the dust data Z is higher than the allowable limit (0.15 mg / m ³ ), then it is determined whether or not the dust data Z ′ is stored. If no dust data Z 'is stored, after storing the dust data Z, and outputs the purification command signal to the purification device 9 after exercising air cleaning function to turn on the timer T ₃ as setting time 3 minutes Evaluation Proceed to index calculation processing.
If the dust data Z'is stored, then the dust data Z and the stored dust data Z'are compared. Here, 'be not less than, the ventilation command signal is stopped, and the dust data Y' dust data Z is stored dust data Z after clearing, arithmetic processing on evaluating index the timer T ₃ as set time of 3 minutes If the dust data Z is less than or equal to the stored dust data Z ′, the ventilation command signal is output to the purifying device 9 to activate the ventilation function and the air cleaning function, and then the timer T ₃ is turned on for a set time of 3 minutes. Then, the process proceeds to the calculation process of the evaluation index.

Therefore, it is judged every 10 minutes whether or not the dust data Z is within the allowable limit, and if it is out of the allowable limit, the dust data Z at that time is stored as Z ′ and a purification command signal is output to output the air cleaning. The function is activated, and after 3 minutes, it is determined whether or not the dust data Z is within the allowable limit. At this time, if the dust data Z is within the allowable limit, the purification command signal is stopped, but if it is still outside the allowable limit, it is compared with the previously stored dust data Z '. If it is improved from the previous state, the purification command signal is continuously output, and after 3 minutes, the dust data Z
Is within the allowable limit, and when the dust data Z is within the allowable limit, the purification command signal is stopped. On the other hand, if it is not improved from the previous state, the ventilation command signal is output, the dust data is improved by the ventilation function and the air cleaning function, and after 3 minutes, it is determined whether the dust data Z is within the allowable limit. When the dust data Z becomes lower than the dust data Z ′, the ventilation command signal is stopped and the dust data is improved only by the air cleaning function.

Further, in the data processing of the evaluation index, when the set time of the timer T ₄ elapses, the evaluation index is subsequently set as a reference point, which is 6 in this case.
It is determined whether or not If the evaluation index is higher than the reference point, the timer T ₄ is turned on for a set time of 10 minutes after the operation command signal is stopped. On the other hand, when the evaluation index is equal to or lower than the reference point, the operation command signal is output to the purifying device 9 to activate the ventilation function and the air cleaning function, and then the timer T ₄ is turned on for a set time of 3 minutes to proceed to the first processing. Return.

Therefore, it is judged every 10 minutes whether the evaluation index is below the reference point, and when the evaluation index is below the reference point, the purifying device 9 is operated, that is, even if the data of each factor is within the allowable limit. If the total evaluation index of these is less than or equal to the reference point, the purifying device 9 is operated, so that the cleanliness of the room air can always be maintained at a certain level or higher.

According to such an embodiment, the oxygen, humidity, and dust amount in the indoor air are monitored at intervals of 3 seconds, these state quantities are displayed, and these state quantities are comprehensively evaluated to obtain an evaluation index. Since the zero-value index is displayed, anyone can accurately and easily grasp the cleanliness of the indoor air. Therefore, the comfort, health and safety of the people who live can be guaranteed. Moreover, since the evaluation index is displayed as an index of 1 to 10, it can be easily understood and handled by anyone, especially the elderly and children. At the same time, the oxygen, humidity, and dust amount are also indexed and displayed, which is useful for measures against dew condensation, maintenance and management of the house. Further, since the state quantity of each factor is detected, displayed, and the evaluation index is calculated and displayed at intervals of 3 seconds, flickering of these displays can be prevented.

Further, in operating the purifying device 9, since the driving is performed based on the evaluation index in addition to the judgment for each factor, even if the data of each factor is within the allowable limit, the evaluation index is the reference. If it is below the point, the purifying device 9 is operated, so that the cleanliness of the room air can always be kept above a certain level. In particular, in operating the purifying device 9 based on each factor, when improving the humidity data Y by ventilation, the initial state before improvement is stored, and after the ventilation for a certain period of time, the humidity data Y is initialized. If the condition is not improved, the ventilation is stopped for a predetermined time, so that the condition of the indoor air does not deteriorate even when the outside air humidity is higher than the indoor humidity.

In addition, in the above-mentioned embodiment, although the device having the ventilation function and the air cleaning function is used as the cleaning device 9, the ventilation device and the air cleaning device may be separately provided. In this case, the ventilation command signal may activate the ventilation device, the purification command signal may activate the air purifier, and the operation command signal may activate the ventilation device and the air purifier. Furthermore, basically, ventilation can improve oxygen content, humidity, and dust content, so it is sufficient if it has at least a ventilation function, but in this case, when the state quantity of any factor deviates from the allowable limit. , Control to operate the ventilation function.

Further, in the above embodiment, the state quantity of each factor and the display of the evaluation index are updated at intervals of 3 seconds, and the control based on each factor and the evaluation index is performed at intervals of 10 minutes, but these are also optional. Good. Further, after outputting each command signal, the time for determining whether each state quantity and evaluation index are within the allowable limit may be arbitrary.

Further, in the above-mentioned embodiment, the indoor air evaluation index is obtained by the three factors of oxygen, humidity and dust, but in addition to this, if the evaluation index is obtained by including factors such as fungi and toxic gases, the quality of the air will be improved. Can be evaluated accurately.

Further, in the above example, in determining the number of steps of each data, the oxygen step width was 0.15%, the humidity step width was 10%, and the dust step width was 0.05 mg / m ³ , but these step widths are You may decide arbitrarily. However, if it is too small, the display range will be narrowed due to the relationship with the display units 5, 6 and 7. On the contrary, if it is too large, it will not be possible to display the slight fluctuations of each data, so make a decision in consideration of these points. It is preferable.

Further, in displaying each data based on the number of these steps, in the above-mentioned embodiment, each is displayed in 10 steps, but it may be arbitrary as long as it can display the state quantity in a certain range required for this, as well. Not limited to visual, it may be expressed by sound. Further, in obtaining the evaluation index from the number of steps of each data, the weighting factor of each data is not limited to the value in the above-mentioned example, and the degree of affecting the safety of the human body due to each factor and the discomfort given to a person. It may be appropriately determined in consideration. Further, the display of the evaluation index is not limited to 10 levels as in the above embodiment, and may be arbitrary,
Moreover, it is not limited to a visual form, and a sound expression may be used.

Further, in operating the purifying device 9 based on the data of each factor, in the above embodiment, the allowable limit of oxygen is 20.5% or more, the allowable limit of humidity is 40% or more and 60% or less, and the allowable limit of dust is 0.15 mg. Although / m ³ or less is set, it is preferable to determine these as well according to the safety of the human body and the degree of discomfort felt by a person.

In operating the purifying device 9 based on the evaluation index, the purifying device 9 is driven on the condition that the evaluation index becomes equal to or less than the reference point 6 in the above embodiment. If the state quantity of any one of the factors exceeds the limit that impairs the safety of the human body or makes people uncomfortable, for example, exceeds the value specified by the Building Standards Act, the evaluation index will be below the reference point. Should be set.

〔The invention's effect〕

As described above, according to the present invention, a method for cleaning indoor air that does not deteriorate due to the state of the outside air when improving at least the state quantity of humidity among factors affecting the pollution of indoor air by the ventilation device is provided. Can be provided.

Incidentally, after the application of the present invention, Japanese Utility Model Laid-Open No. 62-25733 was published, but this is to perform an interval ventilation operation when the humidity tends to increase due to the operation of the ventilation device, The difference is that the case where the humidity tends to decrease due to the operation of the ventilation device as in the present invention is not taken into consideration.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is a block diagram of the entire system, FIG. 2 is a diagram showing each data display,
FIG. 3 is a perspective view in which a part of the purifying device is cut away, FIG. 4 is a sectional view taken along line IV-IV of FIG. 3, and FIGS. 5 (A) and (B) are flowcharts. 1A to 1C ... Sensor, 2 ... Arithmetic control device, 3 ... Input device, 4 ... Display device, 9 ... Purification device.

Claims (1)

[Claims] 1. A method of cleaning indoor air, which improves at least a humidity state quantity by a ventilation device among factors affecting indoor air pollution, wherein the humidity state quantity is detected, and the detected state quantity is set in advance. When the value exceeds the set permissible limit, after storing the detected state quantity, the ventilator is activated, and after this ventilator operates for a certain period of time, the humidity state quantity is detected again. While stopping the operation of the ventilation device on condition that it is within the allowable limit, when the detected state quantity is higher than the upper limit of the allowable limit, it is compared with the stored state quantity, and the detected state quantity is not more than the stored state quantity. If the detected state quantity is greater than or equal to the stored state quantity, the ventilation system operation is stopped for a specified time, and if the detected state quantity is lower than the lower limit of the allowable limit, Compared with the state quantity, the ventilator continues to operate on the condition that the detected state quantity is not less than or equal to the memory state quantity, and when the detected state quantity is less than or equal to the memory state quantity, the ventilation system operation is stopped for a predetermined time. A characteristic method for cleaning indoor air.