JPH112445A - Ventilation system for indoor air - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform ventilation without remarkably reducing the degree of cleanness of indoor air by positively providing an exhaust air fan and a fresh air introduction port in a room, and at the same time by mounting a filter member that can eliminate dust and pollen being contained in the fresh air to the fresh air introduction port. SOLUTION: An exhaust air fan 2 and a fresh air introduction port 4 are provided on walls 1 and 3 in a room, respectively. A window louver 5 is provided at the outermost side of the fresh air introduction port 4, and first and second filters 6 and 7 are provided at the inner side. When the ventilation of indoor air is required, the exhaust air fan 2 is operated for discharging smoke and carbon dioxide gas in a room and fresh air can be introduced while contamination substance such as dust and pollen are eliminated in advance, thus maintaining the degree of cleanness of indoor air. Glass wool that does not lose a filtering function even when it is wetted and a non-woven cloth material such as Japanese paper with superior adsorptivity for adsorbing fine dust should be used for the first and second filters 6 and 7, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation system for room air such as a general house provided with an exhaust ventilation fan.

2. Description of the Related Art Conventionally, in a ventilation system for indoor air such as a general house using an exhaust ventilation fan, a wooden house having low airtightness is often not provided with an outside air inlet itself. In the case of a house or the like, an outside air introduction port is provided, but the outside air introduction port is merely provided with an insect repellent net for preventing invasion of pests and the like.

In recent years, attention has been paid to the adverse effects of indoor air pollution on human health, and air purifiers and the like have been widely used. However, an air purifier cannot cope with a large amount of smoke generated at the time of cooking food or an increase in carbon dioxide due to combustion gas from an oil fan heater or the like. Therefore, ventilation with an exhaust ventilation fan is generally used together.
During this ventilation, outdoor air is introduced, but especially in urban areas, air pollution due to exhaust gas, dust, pollen, etc. is progressing, and the introduction of outside air significantly reduces the cleanliness of indoor air. There was. An object of the present invention is to provide a ventilation system capable of performing ventilation without significantly lowering the cleanliness of room air when ventilation of room air is required.

Means for Solving the Problems In order to achieve the above object, according to the present invention, an exhaust ventilation fan and an outside air inlet are positively provided in one or more places in a room, and the outside air inlet is provided in the room. Further, a ventilation system is configured by mounting a filter member capable of removing dust, pollen and the like contained in the outside air. Further, the outside air inlet is separated from the first filter provided in the vicinity of the inside of the rainwater intrusion prevention means, the first filter provided in the vicinity of the rainwater intrusion prevention means, such as the outermost rainwater intrusion prevention means. This is constituted by the installed second filter. The first filter uses relatively coarse glass wool or other material that does not lose its filter function even when wet due to weather, etc., and can be reused by washing. The second filter is finer than the first filter. A nonwoven fabric material such as Japanese paper, which is excellent in adsorbing dust and the like, is inexpensive and does not impair the beauty of the room, is used. Also, at the bottom of the first filter,
It is desirable to provide a downward slope so that rainwater that has entered due to wind and rain can be discharged.

According to the structure of the ventilation system according to the present invention,
When ventilation of indoor air is required, the exhaust ventilation fan is operated to exhaust indoor smoke and carbon dioxide gas, and at the same time, a filter provided at the outside air inlet removes contaminants such as dust and pollen in advance. The outside air can be introduced in a state of being kept, and the cleanness of the indoor air can be maintained. In addition, even if water invades the inside due to wind and rain, the first filter is made of a material that does not lose its filter function even if it gets wet, so there is no functional problem. Because it is discharged, it does not wet the second filter.

An embodiment of a ventilation system according to the present invention will be described below with reference to the drawings. As shown in FIG. 1, an exhaust ventilation fan 2 is provided on a wall 1 of a room, and an outside air inlet 4 is provided on a wall 3 of the room. As shown in FIG. 2, the outside air inlet 4 includes a gallery 5 provided on the outermost side, a first filter 6 detachably provided near the inside of the gallery 5, and a first filter 6.
And a second filter 7 that is detachably provided inward from and separates from the second filter 7. The lower part 8 of the first filter 6 has a downward slope toward the outside, and
The water flowing down from the filter 6 can be discharged. FIGS. 4, 5, and 6 show another embodiment in which the present invention is applied to a continuous window frame of an aluminum sash. Wall 10
The exhaust ventilation fan 20 is provided with a continuous window frame 90 provided on the wall 30.
Is provided with an outside air inlet 40. As shown in FIG. 5, the outside air inlet 40 is provided with a middle net 80 inside the gallery 50, and includes a first filter 60 and a second filter 70 provided inside the net 50. Also,
The louver used for the outside air inlet is an electric shutter,
By interlocking with the exhaust ventilation fan, it is possible to prevent outside air from being blown.

As described above, according to the ventilation system of the present invention, it is possible to discharge indoor air and at the same time introduce external air in a state where contaminants such as dust and pollen in the external air have been removed. Even in urban condominiums where pollution has progressed, it is possible to prevent the deterioration of indoor air cleanliness due to introduction of outside air, and to prevent clogging of filters of air purifiers when using air purifiers together. Is also effective. Further, even when rainwater falls inside the gulls due to wind and rain, the rainwater is discharged to the outside from the lower part, so that a stable filter effect can be always exerted. Furthermore, the first filter can be reused by washing with water,
Since the material itself of the second filter is inexpensive, the running cost is low, and the first and second filters are both detachably provided so that maintenance is easy.
In addition, by incorporating it into fittings such as window frames and doors, it can be easily applied to existing buildings.

[Brief description of the drawings]

FIG. 1 is a plan view of a house according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a front view as viewed from a direction B in FIG. 2;

FIG. 4 is a plan view of a dwelling according to another embodiment of the present invention.

FIG. 5 is a sectional view taken along line CC of FIG. 4;

FIG. 6 is a front view as viewed from a direction D in FIG. 5;

Claims (2)

[Claims] 1. A ventilation system for indoor air such as a general house having an exhaust ventilation fan and an outside air inlet, wherein the outside air inlet is provided with a filter member capable of removing dust and the like contained in the outside air. Indoor air ventilation system. 2. An outside air inlet provided with the filter member is provided with rainwater intrusion prevention means such as rags provided on the outermost side, and provided near the inside of the rainwater intrusion prevention means, even when it is wet by rainwater or the like. A first filter capable of maintaining a filter effect, and a second filter disposed inwardly from the first filter and capable of removing finer dust and the like than the first filter. Item 4. The indoor air ventilation system according to Item 1.