JPH0498032A - Automated ventilation device - Google Patents

Abstract

PURPOSE:To prevent any mold from increasing and hence prevent any odor and/or any harmful matter from being filled therewith in a room by detecting the presence of a person by absence detector means, and, in the case where the absence is decided over a long time, automatically performing ventilation by ventilation control means. CONSTITUTION:Absence detector means 1 detects a fact on whether or not any person is prevent, and, in the case of any person being absent, absence judgement means 2 outputs an electric signal. The absence judgement means 2 accumulates absence time, and in the case where preset time passed, sends an electric signal instructing ventilation amount control means 3 to operate at a large amount of air for a predetermined time. Provided the absence is kept successively, the former sends an electric signal instructing the latter to be operated at a small amount of air for a predetermined time. Thereafter, the absence judgement means 2 resets the accumulation time and repeats the above operation, and issues an electric signal instructing ventilation means 4 to be interrupted when no person is present. Hereby, ventilation is performed even with high humidity outside the room and any mold is prevented from increasing.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an automatic ventilation system for preventing the growth of mold in a living space that is not used for a long period of time and for ventilating the air in the space.

BACKGROUND OF THE INVENTION In recent years, the number of buildings such as resort condominiums that are only used for short periods of time has increased, and there is a demand for equipment that does not allow mold to grow even when unoccupied for long periods of time.

Conventionally, this type of automatic ventilation system detects and calculates indoor and outdoor temperature and humidity, wall temperature, etc., and then sets the temperature.

When humidity levels are high, this device operates a ventilation fan or dehumidifier to control indoor humidity and prevent the growth of mold (for example, Japanese Patent Laid-Open No. 1-161417).

Problems to be Solved by the Invention Conventional automatic ventilation systems such as these perform ventilation only by detecting temperature and humidity, so they may hardly ventilate during the rainy season or when outdoor humidity is high for a long period of time. It is clear that temperature and humidity are important factors for the growth of mold, but airflow is also an important factor. If people are present, opening and closing doors and windows creates airflow, which can prevent the growth of mold. Therefore, when the outdoor humidity is high, ventilation is not performed, so there is a problem that mold growth cannot be prevented.

In addition, when buildings are unoccupied for long periods of time, there is almost no ventilation, which causes odor and harmful substances such as formaldehyde and radon to be emitted from furniture, building materials, walls, carpets, etc., so ventilation is necessary. Particularly in the case of a new building, moisture gradually comes out from the walls and building materials, and the humidity in the air is low (although condensation can cause mold to grow on the surface. However, conventional automatic ventilation systems Ventilation is performed only by detecting humidity, so even if the person is not present, ventilation will not occur if the temperature and humidity are outside the set value, which causes problems such as odors being trapped in the room and mold growth. Ta.

The present invention solves the above problems by detecting the presence or absence of people even during the rainy season or when outdoor humidity is high for a long period of time, and automatically ventilating and creating airflow when no one is present. The purpose of this invention is to provide an automatic ventilation system that prevents the growth of mold and ventilates the room so that odors and harmful substances do not accumulate in the room.

Means for Solving the Problems The present invention achieves the above objects.A first means of the present invention includes an absence detection means provided in a room for detecting the presence or absence of a person, and an output from the absence detection means. an absentee determination means for determining whether the person is absent based on an electrical signal; a ventilation amount control means for controlling the amount of ventilation based on the electrical signal outputted from the said absentee determination means; It consists of a ventilation means that performs.

Further, the second means of the present invention is based on an absence detection means provided indoors for detecting the presence or absence of a person, a temperature/humidity detection means provided indoors/outside the room, and an electric signal output from the absence detection means. an absentee determination means for determining that the person is absent; and a value from the temperature/humidity detection means to determine the ventilation amount;
It is composed of a ventilation amount control means for controlling the ventilation amount using an electrical signal output from the absence determination means, and a ventilation means for performing ventilation according to the electrical signal output from the ventilation amount control means.

Further, the third means of the present invention is a carbon dioxide gas sensor installed in the room to detect the concentration of carbon dioxide gas, and an electric signal output from the carbon dioxide gas sensor to determine that the person is away from home, and to determine the ventilation amount. It is composed of an absentee determination means, a ventilation amount control means for controlling the ventilation amount by an electrical signal output from the absence determination means, and a ventilation means for performing ventilation according to the electrical signal output from the ventilation amount control means. be.

Further, the fourth means of the present invention includes an infrared sensor installed indoors that detects the amount of infrared rays generated from a human body, and an electric signal output from the infrared sensor to determine that the person is away, and to adjust the ventilation amount. The device comprises an absentee determination means for determining the absence, a ventilation amount control means for controlling the ventilation amount by an electrical signal output from the absence determination means, and a ventilation means for performing ventilation according to the electrical signal output from the ventilation amount control means. It is something.

Further, a fifth means of the present invention provides an electric power consumption and gas consumption detection means provided indoors for detecting electric power consumption and gas consumption, and an output from the electric power consumption and gas consumption detection means. an absentee determination means for determining the amount of ventilation based on an electrical signal outputted from the absentee person; It consists of a ventilation means that performs ventilation using the output electrical signals.

Effect: Due to the configuration of the first means, the presence or absence of a person is detected by the absence detection means, and if the person is absent for a long period of time, ventilation is automatically performed to prevent the growth of mold.

With the configuration of the second means, the presence or absence of a person is detected by the absence detection means, and if the person is absent for a long period of time, ventilation is automatically performed, but if the indoor/outdoor temperature/humidity detection means indicates that the outdoor humidity is 80% or more, The ventilation is stopped and the humidity in the room is 80%.
In the above cases, ventilate the room even if you are not home to prevent the growth of mold.

With the configuration of the third means, the carbon dioxide gas concentration in the room is detected by the carbon dioxide gas sensor, it is determined from the carbon dioxide gas concentration whether the person is away from home, and if the person is away for a long time, ventilation is automatically performed to prevent the growth of mold. To prevent. In addition, even when the carbon dioxide concentration reaches 1000 pps or more, ventilation is performed even when the person is away.

With the configuration of the fourth means, the infrared sensor detects infrared rays from the human body, and when the person is away for a long time, ventilation is automatically performed to prevent the growth of mold.

With the configuration of the fifth means, it is possible to determine whether the person is away from home using the power consumption and gas consumption detection means, and if the person is away for a long period of time, ventilation is automatically performed to prevent the growth of mold.

EXAMPLE A first example of the present invention will be described below with reference to FIGS. 1 and 2.

As shown in the figure, the absence detection means 1 is a means installed indoors to detect the presence or absence of a person in a house or room, and outputs an electrical signal to the absence determination means 2 when the person is absent. Absence determination means 2
receives the electrical signal from the absence detection means 1, and
When no one is present (several hours to several days), the amount of ventilation is determined based on the period of absence and the size of the room, and an electrical signal is output to the ventilation amount control means 3. The ventilation amount control means 3 receives the electric signal from the absence determination means 2 and outputs an electric signal to the ventilation means 4 for controlling the amount of ventilation. The ventilation means 4 is, for example, a ventilation fan or a window opener, and receives a signal from a ventilation amount control means 3 such as an inverter that changes the rotation speed of a motor to change the air volume, and exchanges indoor air with outdoor air. cause airflow to occur.

To explain the operation of the above configuration, for example, the absence detection means 1 detects whether or not a person is absent, and if the person is absent, an electrical signal is output to the absence determination means 2.

The absence determination means 2 integrates the time of absence, and if a preset time has elapsed, the ventilation amount control means 3
An electrical signal is sent to the unit to operate at a high air volume for a certain period of time.

Then, if there are still people absent, it outputs an electric signal to operate at a low air volume for a certain period of time.Then, it resets the cumulative time and repeats the above operation, and if there is someone present, it outputs an electric signal to operate the ventilation means 4 at a low air volume for a certain period of time. Outputs electrical signals to.

It has been known for a long time that mold can grow in places that are well ventilated, even in areas with high humidity.This is because temperature and humidity are important factors for mold growth, but if there is a certain level of humidity, Even when airflow is present, walls and ceiling surfaces become dry (water activity values are low).
This is because the growth of mold can be suppressed. Also,
Even if there are no people present for a long time, ventilate the room regularly to prevent odors and harmful substances from accumulating in the room.

Next, a second embodiment of the present invention will be described with reference to FIGS. 3 to 5.

As shown in the figure, the absence detection means 5 is a means installed indoors to detect the presence or absence of a person in the house or room, and outputs an electrical signal to the absence determination means 6 when the person is absent. Temperature and humidity detection means installed indoors and outdoors? a.

7b detects the indoor and outdoor temperature and humidity, and outputs an electric signal to the absence determining means 6. The absence determination means 6 receives the electric signal from the absence detection means 5, and determines the ventilation amount based on the period of absence and the size of the room when no one is present for a long period of time (several hours to several days), and An electrical signal is output to the ventilation amount control means 8 while also referring to the temperature and humidity values. The ventilation amount control means 8 receives the electric signal from the absence determining means 6 and outputs an electric signal to the ventilation means 9 for controlling the amount of ventilation. The ventilation means 9 is, for example, a ventilation fan or a window opening/closing device, and upon receiving the signal from the ventilation amount control means 8, exchanges indoor air with outdoor air and generates an airflow inside the room.

To explain the operation in the above configuration, for example, even if the absence determination means 8 determines that the person is absent, if the humidity outside is extremely high due to rain or the like, it is better not to ventilate the room.

Figure 5 shows the range of temperature and humidity in which mold grows. The dotted line in area a indicates the breeding area of wet mold, and the solid line in area a indicates the breeding area of dry mold. From the figure, the breeding range of wet mold based on humidity is 6
0% or more, and dry mold is 80% or more. In particular, when the humidity is 80%, both wet mold and dry mold can breed, and when it rains, mist-like moisture enters the room, so ventilation is not recommended. It is also a good idea to ventilate the room even if the humidity in the room reaches 80% or higher for some reason, so ventilate regardless of whether you are away or not. Therefore, even if the absence determination means 6 determines that the person is absent, if the outdoor humidity is 80% or more, ventilation will not be performed.
Even if the user is not at home, if the humidity in the room is 80% or more, an electrical signal is output to the ventilation amount control means 8 so as to perform ventilation.

Next, a third embodiment of the present invention will be described with reference to FIGS. 6 and 7.

As shown in the figure, the carbon dioxide gas sensor 10 is a means installed indoors to detect the concentration of carbon dioxide in a house or room, and outputs the carbon dioxide concentration to the absence determination means 11. The absence determination means 11 determines whether the patient is absent from the office based on the carbon dioxide concentration, and outputs an electrical signal to the ventilation amount control means 12. The ventilation means 13 ventilates the room based on the electrical signal from the ventilation amount control means 12.

To explain the operation in the above configuration, for example, the carbon dioxide concentration outdoors is normally about 350 ppm, and when there are no people, the carbon dioxide concentration indoors is almost the same. When people live there, the concentration of carbon dioxide gas can be quite high, although it varies depending on their behavior. Even while sleeping, when two people are sleeping in a 6 tatami room, the amount of energy is 2000 pp-~40
Concentrations of 0.00 ppl may occur. Therefore, if it is less than 500 pl)1 for a long period of time, it can be determined that the person is away.

Additionally, the Building Standards Act stipulates that the carbon dioxide concentration must be below 11,000 ppI (1,000 pI even when there are people present).
If it is 1 or higher, you can lead a healthy life by ventilating the air.

Note that by using it in combination with a temperature/humidity detection means, it is possible to create a device that prevents the growth of mold.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. 8 and 9.

As shown in the figure, the infrared sensor 14 is a means installed indoors to detect the presence or absence of a person in a house or room, and outputs the presence or absence of a person to the absence determining means 15. Absence determination means 15 determines whether the person is absent from the office using an infrared sensor, and outputs an electrical signal to ventilation amount control means 16.

The ventilation means 17 ventilates the room in response to an electric signal from the ventilation amount control means 16.

To explain the operation in the above configuration, for example, the amount of infrared rays generated by the infrared sensor 14 is detected, and if there is a person, the amount of infrared rays generated increases or decreases as the person moves, and detects whether the amount increases or decreases. The presence or absence of a person is determined by Then, after a certain period of time has elapsed, the room will be ventilated.

Note that by using it in combination with a temperature/humidity detection means, it is possible to create a device that prevents the growth of mold.

Next, a fifth embodiment of the present invention will be described with reference to FIGS. 10 and 11.

As shown in the figure, the power consumption and gas consumption detection means 18 is a means installed indoors to detect the power consumption and gas consumption of a house or room, and outputs the amount of both stools to the absence determination means 19. The absence determination means 19 determines whether the person is absent from the office based on the amount of electricity used and the amount of gas used, and outputs an electrical signal to the ventilation amount control means 20. The ventilation means 21 ventilates the room in response to an electrical signal from the ventilation amount control means 20.

To explain the operation in the above configuration, for example, when there are people, electricity or gas is always used to turn on lights or cook food.

The amount of electricity and gas used is detected, and if it is less than a certain amount, it is determined that the person is away. Then, after a certain period of time has elapsed, the room will be ventilated.

In addition. By using it in combination with a temperature/humidity detection means, it is possible to create a device that prevents the growth of mold.

Effects of the Invention As is clear from the above embodiments, the present invention, compared to conventional devices that perform ventilation only based on indoor temperature and humidity, detects that someone is away and starts ventilation after a certain period of time has elapsed. By doing this, even when the outdoor humidity is high (80% or less), you can ventilate and prevent the growth of mold. In addition, if you are away for a long time, such as in a resort condominium, by regularly ventilating the room, harmful substances generated from building materials will not be trapped inside the room, and especially if it is a newly built building, moisture may come out from the walls etc. Therefore, it is possible to provide an automatic ventilation system that has a great practical effect of preventing the growth of mold due to automatic ventilation when the person is away from home.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an automatic ventilation system showing a first embodiment of the present invention, Fig. 2 is a flowchart showing the operation of the automatic ventilation system, and Fig. 3 is a block diagram of an automatic ventilation system showing a second embodiment of the invention. Figure 4 is a flowchart showing the operation of the automatic ventilation system, Figure 5 is a diagram showing the mold growth area with respect to temperature and humidity, and Figure 6 is a flowchart showing the operation of the automatic ventilation system. 7 is a flowchart showing the operation of the automatic ventilation system, FIG. 8 is a block diagram of the automatic ventilation system showing the fourth embodiment, and FIG. 9 is a flowchart showing the operation of the automatic ventilation system. FIG. 10 is a block diagram of an automatic ventilation system according to the fifth embodiment, and FIG. 11 is a flowchart showing the operation of the automatic ventilation system. 1.5... Absence detection means, 2,6.11.15
゜19... Absence determination means, 3.8, 12.16
．． 20... Ventilation amount control means, 4.9, 13.1
7.21... Ventilation means, 7a, 7b...
・Temperature and humidity detection means, 10... Carbon dioxide sensor,
14... Infrared sensor, 18... Electric power consumption and gas consumption detection means. Name of agent: Patent attorney Shigetaka Awano and one other person Fig. EL Minedai [S1 Fig. 1×1 Fig. 1 O Fig.

Claims (5)

[Claims] (1) Absence detection means for detecting the presence or absence of a person provided in the room, an absence determination means for determining whether the person is absent based on an electrical signal outputted from the absence detection means, and an absence detection means outputted from the absence determination means An automatic ventilation system comprising: a ventilation amount control means that controls the ventilation amount using an electrical signal; and a ventilation means that performs ventilation using the electrical signal output from the ventilation amount control means. (2) Absence detection means installed in the room to detect the presence or absence of a person, temperature/humidity detection means installed outside the room, and an absence detection means to determine whether the person is away based on an electrical signal output from the absence detection means. a determination means, a ventilation amount control means for determining a ventilation amount by analyzing the values from the temperature/humidity detection means, and controlling the ventilation amount by an electrical signal output from the absence determination means; An automatic ventilation system consisting of a ventilation means that performs ventilation using output electrical signals. (3) a carbon dioxide gas sensor installed indoors that detects the concentration of carbon dioxide; an absence determination means for determining the amount of ventilation based on an electrical signal output from the carbon dioxide sensor; 3. The automatic ventilation system according to claim 1, comprising a ventilation amount control means for controlling the ventilation amount by an electric signal output from the means, and a ventilation means for performing ventilation according to the electric signal output from the ventilation amount control means. (4) an infrared sensor installed indoors that detects the amount of infrared rays emitted from a human body; an absentee determination means for determining the amount of ventilation based on an electrical signal output from the infrared sensor; Ventilation amount control means for controlling the ventilation amount using an electrical signal output from the absence determination means;
3. The automatic ventilation system according to claim 1, further comprising a ventilation means that performs ventilation according to an electric signal output from the ventilation amount control means. (5) A power usage and gas usage detection means for detecting power usage and gas usage installed in the room, and an electric signal output from the power usage and gas usage detection means indicate that the person is away from home. an absentee determination means for determining the amount of ventilation by determining the amount of ventilation; a ventilation amount control means for controlling the amount of ventilation based on the electrical signal output from the said absentee determination means; 3. The automatic ventilation system according to claim 1, further comprising ventilation means for performing ventilation.