JPH0754737Y2 - Air quality determination device for air-conditioned room - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for determining the quality of air in an air-conditioned room.

[0002]

2. Description of the Related Art If an air pollution source exists in an air-conditioned room, it becomes polluted air. Not only human behavior such as smoking and eating and drinking, but also the presence of the human body is a source of pollution. In offices, the air is also polluted by the operation of copy machines and office automation equipment.

As described above, there are various sources of pollutants in the room, and the emission of pollutants generally deteriorates the quality of air. Deterioration of air quality can sometimes be perceived as odor by humans, but it is a common experience of the general public that if they stay in the same room for a long time, they will not feel the odor due to olfactory fatigue.

On the other hand, from the aspect of air conditioning technology, even if the temperature and humidity can be controlled, the control for maintaining the air quality above a certain level is not easy. One of the reasons is that it is difficult to establish objective methods and guidelines for discriminating air quality grades that differ among individuals. Therefore, regardless of the actual air quality of the air-conditioned room, it is empirical to stipulate the number of ventilations and to improve the purification mechanism by means of filters or the like. It was a common method.

[0005]

As described above, even if the air quality is deteriorated due to various pollution sources existing in the room, if the user stays in the room for a long time, it cannot be perceived as an odor due to olfactory fatigue. In some people, the deterioration of air quality may appear as a physical symptom (for example, headache or fatigue), but it is difficult to identify that this symptom is caused by deterioration of air quality, and People do not have the sensation / perceptual ability to judge. Therefore, such symptoms cannot be used as an objective criterion for air quality level.

On the other hand, interest in indoor air quality and energy saving momentum are increasing. However, even if there is a consciousness that "the air quality in the room is not deteriorated" or "I want to improve it", the air quality cannot be directly perceived in many cases, and this is one of the factors that cause the air quality deterioration. It is also possible that

If it is possible to wake up the perception that the quality of the air is deteriorated, refrain from smoking, suppress the emission of pollutants from other air pollution sources, or open the window or drive the exhaust fan. A quality recovery action can be performed.

In order to solve this problem, the present invention aims to provide an air quality discriminating apparatus which converts the air quality in a room into a physical quantity that can be perceived by a person.

[0009]

According to the present invention, an air quality detecting device for detecting the air quality of an air-conditioned room and a detection value detected by this air quality detecting device correspond to several air quality levels. A scent generator for applying a plurality of types of scents to the room to be air-conditioned, and a controller for adjusting the type of scent generated by the scent generator. (EN) Provided is an air quality discrimination device for an air-conditioned room in which the controller receives a signal from a converter and selects a scent type.

[0010]

Various types of detecting devices such as a CO ₂ concentration meter, a dust meter (floating particle counter), a VOC detector, and a translucent meter are known as devices for measuring the concentration and degree of various substances in the air. For example, a non-dispersive infrared absorption type CO ₂ concentration meter and a light scattering type dust meter can be measured with high accuracy. In addition, VOC detectors are volatile organic compounds such as various chain hydrocarbons, aromatic hydrocarbons, halides, aldehydes and ketones (VOC: Volatic Organic Co
mpound) is known by gas chromatography. Displaying the detection values of these various detection devices on a display and creating an index by combining these values is also commonly performed in the field where these detection devices are used.

The degree of contamination of indoor air can be grasped as an index ranked by combining these detection values by using these detection devices. However, if these indicators are presented, understanding of their meaning will be based on knowledge. The processes are intelligent and must read, interpret and analyze the relationship between air quality and numbers. Air quality cannot be determined by missing any of these intellectual processes. Also,
It is not practical to install such a judgment device in an ordinary air-conditioned room.

According to the present invention, the air quality can be easily determined without adopting such an intelligent process. First, the range of the air quality level of the room is defined as “good range”, “normal range”, and “bad range” within a range that does not violate relevant laws and regulations
It is divided into several and selected. Then, a different scent is assigned to each range. Now, taking the case of selecting into these three ranges as an example
"Aroma A" for, "ordinary range" for "Aroma B"
“Aroma C” is assigned to the “bad range”.

In this case, "fragrance A" uses a fragrance that gives a good odor that is evaluated as comfortable, and "fragrance C" uses a fragrance that gives a odor that is evaluated as a bad odor. "Fragrance B" is an ordinary fragrance in the middle. Each of these fragrances is loaded into the scent generator.

According to the present invention, the detection signal of the above-mentioned detection device for detecting various substances in the air (collectively referred to as air quality detection device) corresponds to the air quality level by the converter. The range is divided into "normal range" and "bad range", and the separated signal is output to the controller of the scent generator. The controller controls the scent generating device in accordance with the classification signal to emit any one of scent A, scent B, and scent C. By supplying this scent to the air-conditioned room, the air quality level of the air-conditioned room can be determined.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention, in which 1 is an air-conditioned room and 2 is an air conditioner. The return air and the outside air are introduced into the air conditioner 2 from the return air duct 3 and the outside air duct 4, and the air-conditioned supply air is supplied from the air outlet 6 to the air conditioning target room 1 through the supply air duct 5. 7 is an exhaust duct.

According to the present invention, an air quality detecting device 8 for detecting the air quality of the air-conditioned room 1 is installed. The air quality detecting device 8 is composed of detectors for various substances in the air as described above, and is a measuring instrument such as a CO ₂ concentration meter, a dust meter, a VOC detector, a translucent meter, a SO _X measuring instrument, a NO _X measuring instrument. Or a combination of two or more.

The detection value detected by the air quality detection device 8 enters the converter 9. The converter 9 judges (separates) whether the detected value corresponds to the "good range", "normal range" or "bad range" of the air quality level, and the judgment result is used as a conversion signal. Output. The correspondence between the magnitude of the detected value of the air quality detection device 8 to be used and the grade of the air quality level is set in advance as an empirical value.

The converted signal of the converter 9 is input to the controller 10. The controller 10 controls the type of scent generated by the scent generating device 11 according to the converted signal. As a result, the scent generating device 11 generates a scent corresponding to the converted signal, the scent is discharged from the air supply duct 5 into the air supply, and is introduced into the air-conditioned room 1 via the air outlet 6.

FIG. 2 shows an example of the scent generating device 11. The scent generator 11 shown by the broken line frame is composed of a plurality of fragrance containers 13 (a, b, c, ...) In which different kinds of liquid fragrances are stored.
And one end of the perfume container 13 is immersed in the perfume container 13 and the other end is connected to the intermediate container 14 (a, b, c, ...)
c), a perfume opening / closing valve 16 (a, b, c, ...) interposed in the perfume transport pipe 15, and a minute flow rate pump 17 (a, b, c,
..), the perfume duct 18 (a, b, c, ...) connected from the intermediate container 14 to the air supply duct 5, and the perfume duct 18
And a switching damper 21 (a, b, c, ...) And a switching damper 21 (a, b, c ,.

The intermediate container 14 is a closed container, and releases the liquid perfume conveyed from the perfume conveying pipe 15 into this, and releases the perfume released into the air intake ducts 22 (a, b, c, ... )
The highly concentrated scented air is diffused into the air taken in from and is conveyed to the air supply duct by the fan 20. At that time,
By operating the switching damper 21, the exhaust pipes 23 (a, b, c, ...
Switch the air supply of scented air between the () side and the air supply duct 5 side.

The minute flow rate pump 17 is a pump for transporting the liquid perfume in the perfume container 13 as it is (without diluting a solvent or the like) in extremely small amounts (0.01 to 120 ml / Hr) toward the intermediate container 14. Such a micro flow pump 17 is available on the market. In the illustrated embodiment, the flexible perfume carrier tube 15
A roller pump is used that unidirectionally pushes the liquid in the transfer tube 15 with a roller that rotates in one direction while sandwiching the roller from the outside. By controlling the number of rotations of the motor, the flow rate is also reduced. What can be controlled is used.

In addition to such roller pumps, those called tube pumps and diaphragm pumps can also be used. In any case, this minute flow rate pump 17 is interlocked with the opening / closing operation of the fragrance on / off valve 16, and the fan 2
The start / stop control is performed in conjunction with 0 and the switching damper 21. At that time, control is performed for each system (a, b, c, ...), and multiple systems do not release the fragrance at the same time.

For example, when the controller 10 receives a signal corresponding to the "good range" of the air quality level from the converter 9, the perfume feeding operation of only the system a of the perfume A that emits a good aroma is continued, The other systems have stopped supplying air. Similarly, when the signal corresponding to the "normal range" is received, the system of the fragrance B that emits a normal scent is received, and when the signal corresponding to the "bad range" is received, the "fragrance C" that emits an unpleasant scent is received.
Switch to the air supply operation of the system.

In this way, an aroma (comfortable odor) is released into the room through air supply when the air quality of the air-conditioned room 1 is good, and when the air quality is deteriorated. Fragrance =
The relationship of good air and odor = bad air causes a person to feel comfortable. Therefore, in the above-mentioned example, the person in the room can naturally take a perception that the air is bad when the fragrance C flows, and take actions such as ventilation and refraining from smoking.

[0025]

As described above, according to the present invention, it becomes possible to correspond to the indoor air quality level and the type of fragrance, and as a result, the deterioration of air quality is not noticed until now. It can greatly contribute to the improvement of the environment such as office chairs, which were often used.

[Brief description of drawings]

FIG. 1 is a device arrangement system diagram of an air quality determination device according to the present invention.

FIG. 2 is a device layout view showing details of the scent generating device of FIG.

[Explanation of symbols]

 1 Air-conditioned room 2 Air-conditioner 5 Air supply duct 8 Air quality detection device 9 Converter 10 Controller 11 Scent generation device 13 Liquid perfume container 14 Intermediate container 16 Perfume valve 17 Micro flow pump 18 Perfume duct 20 Fan 21 Switching damper

Claims (3)

[Scope of utility model registration request] 1. An air quality detecting device for detecting the air quality of an air-conditioned room, and a converter for classifying a detection value detected by the air quality detecting device into a value corresponding to several air quality levels.
The scent generating device is configured to apply a plurality of types of scents to the air-conditioned room, and a controller that adjusts the type of scent generated in the scent generating device. The scent generating device receives the signal from the converter. An air quality determination device for the air-conditioned room, where the controller selects the type of scent. 2. The fragrance generating device comprises a plurality of fragrance containers containing different kinds of liquid fragrances, a fragrance transfer pipe leading from each fragrance container to a fragrance leaker, a fragrance opening / closing valve interposed in the fragrance transfer pipe, and The air quality discriminating device according to claim 1, comprising a pump. 3. The air quality determining device according to claim 1, wherein the scent generating device is a device that generates at least two types of scents, a pleasant scent and an unpleasant scent.