JP2001116311A - Ventilation sysytem - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation system preventing a shared space from the smell of living rooms, a bath room and a toilette, of which manufacturing cost and running cost are low, preventing the inside of wall of a house from dew condensation, which does not transfer the running noise to the living rooms and quickly ventilating the bath room and the toilette. SOLUTION: Arranging a fan unit 1 provided with an air supply fan and an exhaust fan under the roof of a corridor 12 that is a shared space, the centralized air supply is performed from the ceiling of the corridor 12. The air supply is fed through the corridor 12 to a plurality of living rooms 10, a bathroom and a toilette 11. The air of each living room 10 is exhausted through an exhausting vent 5 independently and the air of the bathroom and the toilette is exhausted locally from a ventilating fan 7. Therefore, the smell and the humidity of the living rooms, the bathroom and the toilette are not gathered into the corridor 12. The air exhausted independently from the living rooms 10 is heat exchanged with the outer air supplied by a fan unit 1 and energy can be saved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building ventilation system for a plurality of rooms.

[0002]

2. Description of the Related Art Conventionally, as a ventilation system for ventilating a plurality of rooms of a building, there is one as shown in FIG. This ventilation system includes a fan unit 51 that drives an air supply fan and an exhaust fan (not shown) with one or more motors behind a ceiling of a corridor 62 that is a common space.
The fan unit 51 includes an intake duct 52 that takes in outside air from outside and an exhaust duct 53 that exhausts indoor air.
And connected to the outdoors. Fan unit 5
1 sucks air from an exhaust port 54 provided on the ceiling of the corridor 62. An air supply port 55 is provided in the ceiling of the living room 60, and the air supply port 55 and the fan unit 51 are connected by an air supply duct 56. In FIG. 2, an air supply port 55 is provided in only one of the living rooms 60 and is connected to the fan unit 51 by an air supply duct 56. However, air supply ports are provided in other rooms (not shown) to supply air. And is connected to the fan unit 51. For a room such as a bath and a toilet 61 that needs to quickly discharge odors and moisture, a ventilation fan 57 is installed to enable local exhaust that directly discharges air to the outside.

When ventilation is performed in the ventilation system having the above configuration, an air supply fan (not shown) of the fan unit 51 rotates and outside air is taken into the fan unit 51 through the intake duct 52 as shown by an arrow A. Then, the outside air is distributed by a distribution unit (not shown) and supplied to the living room 60 from the air supply port 55 through the air supply duct 56 toward the living room 60 as shown by the arrow B. On the other hand, the old air in the living room 60 is discharged from the living room 60 to the corridor 62 as shown by the arrow C,
An exhaust port 54 provided on the ceiling of the corridor 62 as shown by arrow D
Sucked into. Corridor 6 sucked into the exhaust port 54
The air of No. 2 is exhausted outside as shown by an arrow E through an exhaust duct 53 by an exhaust fan (not shown) of the fan unit 51. The air in the bath and toilet 61 is locally exhausted by the ventilation fan 57 to be directly exhausted to the outside.

[0004]

However, in the above-mentioned conventional ventilation system, when the indoor air is exhausted, all the air in the living room 60 passes through the corridor 62 as shown by the arrow C. Further, since the air in the corridor 62 is exhausted by the fan unit 51, the air pressure in the corridor 62 becomes lower than the air pressure in the bath and toilet 61, and a part of the air in the bath and toilet 61 is reduced as shown by an arrow F. It flows into corridor 62. Therefore, there is a problem that the smell of, for example, a cigarette in the living room 60 and the humidity and bad smell of the bath and the toilet 61 are collected and fixed in the corridor 62.

[0005] An air supply duct 56 connecting the air supply port 55 of the living room 60 and the fan unit 51 has a corridor 62.
It is very long compared to the connection between the exhaust port 54 and the fan unit 51, and furthermore, the air supply ducts 56 are required by the number of the living rooms 60 supplying the outside air. Therefore, the resistance when flowing air through the air supply duct 56 is much larger than the resistance when flowing air between the exhaust port 54 and the fan unit 51. Further, the living room 60 to which air is supplied through the air supply duct 56 needs to have a higher pressure than the corridor 62. Therefore, the motor of the fan unit 51 for turning on the air supply fan and the exhaust fan for overcoming the large resistance and the high pressure of the corridor 62 to send the air becomes large, and the fan unit during the operation of the ventilation system becomes large. 5
However, there is a problem that the power consumption of the ventilation system increases and the production cost and operation cost of the ventilation system increase.

Further, since the air pressure of the living room 60 becomes higher than the outdoor air pressure, the warm and moist air of the living room 60 permeates into the walls of the building in winter, and the permeated air forms the walls. There is also a problem that dew forms inside the wall by touching the outermost wall where the temperature is low.

In the living room 60 close to the fan unit 51, the air is supplied to the living room 60 with a shorter length than the air supply duct 56 communicating from the fan unit 51 to another room 60 (not shown). There is also a problem that the noise of the unit 51 is sent to the living room 60 together with the air supply.

An air flow indicated by an arrow F generated due to a lower air pressure in the corridor 62 than an air pressure in the bath and toilet 61 is caused by an arrow G by a ventilation fan 57 installed in the bath and toilet 61 for local exhaust. There is also a problem that the air flow in the bath and the toilet 61 becomes unstable due to the balance between the flow of air and the amount of exhaust air shown in FIG.

Therefore, an object of the present invention is to prevent the smell of a living room, bath and toilet from collecting in a common space such as a corridor.
In addition, the motor of the fan unit can be downsized, the condensation does not occur in the wall in winter, the noise of the fan unit is not sent to the room, and the air in the bath and toilet can be quickly ventilated. There is also to provide.

[0010]

To achieve the above object, a ventilation system according to the first aspect of the present invention comprises a plurality of rooms,
In a ventilation system for ventilating the whole of a building having a common space, the central space is supplied to the common space, and the room is supplied to the room through the common space. It is characterized by individual exhaust.

According to the ventilation system of the first aspect,
The air intensively supplied to the common space flows into the plurality of rooms via the common space, and is individually exhausted from the exhaust ports arranged in each room. Therefore, the air in the common space has a higher pressure than the air in each room, so that the air in each room does not flow into the common space. Therefore, the smell of each room does not gather in the common space.

In addition, since air is supplied to the common space in a concentrated manner, if the fan unit is arranged near the common space, the air supply will be made in comparison with the conventional case where each room is supplied with air through a long air supply duct. Qi resistance can be reduced. Therefore, the load on the air supply fan that sends the pressurized air can be reduced. Regarding the exhaust air, a relatively large resistance is generated in the exhaust air from each room to the exhaust fan, but the exhaust fan needs only a relatively small pressurization to overcome the outdoor air pressure. Therefore, the load of the supply fan and the load of the exhaust fan are balanced, the motor of the fan unit can be downsized, and the production cost and operation cost of the ventilation system can be reduced.

Further, since each of the above-mentioned rooms is supplied with air from the common space and individually exhausted, it is possible to make the pressure lower than that of the common space and a negative pressure lower than the pressure of the outdoor air. is there. When the pressure in each of the above rooms is negative, the warm and moist air of the room does not permeate into the walls of the building in winter, so that the inside of the walls does not condense.

Further, the air supplied from the air supply port blows out to the common space, so that the noise sent together with the air supply is sent to the common space. Therefore, each room often used as a living room is quiet.

Further, since the air in the common space is higher in pressure than the air in the bath and toilet, the air is supplied from the common space to the bath and toilet, and the air in the bath and toilet flows toward the common space. Never. Therefore, the ventilation fans of the bath and the toilet and the exhaust fan of the fan unit that exhausts the whole room do not compete with each other, so that the air can be quickly exhausted.

According to a second aspect of the present invention, there is provided the ventilation system according to the first aspect, wherein the centralized air supply and the individual exhaust are separated by using a fan unit in which an air supply device and an exhaust device are integrally formed. It is characterized by doing.

According to the ventilation system of the second aspect,
Since the fan unit in which the air supply device and the exhaust device are integrally formed is used, only the fan unit needs to be installed in the ventilation system, so that the ventilation system can be downsized.

According to a third aspect of the present invention, in the ventilation system according to the second aspect, the fan unit has a heat exchange function between air supply and exhaust.

According to the ventilation system of the third aspect,
In summer, high-temperature air supplied from outside air is supplied to the room at a reduced temperature by low-temperature exhaust air introduced from a cooled room. In winter, low-temperature air supplied from outside air is supplied to the room at a high temperature by high-temperature exhaust air introduced from a heated room. Therefore, energy can be recovered and energy can be saved.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

As shown in FIG. 1, a ventilation system according to the present invention includes a fan unit 1 which drives an air supply fan and an exhaust fan (not shown) by one or more motors (not shown) on the ceiling of a corridor 12 which is a common space. It has. The fan unit 1 is connected to an intake duct 2 for taking in outside air from outside and an exhaust duct 3 for discharging air. The lower part of the fan unit 1 is connected to the air supply port 4 on the ceiling of the corridor 12. Exhaust port 5 on the ceiling of living room 10
The exhaust port 5 and the fan unit 1 are connected by an exhaust duct 6. In FIG. 1, living room 1
0, the exhaust port 5 is provided only in one room, and the fan unit 1 is connected to the fan unit 1 by the exhaust duct 6. However, the other rooms (not shown) are also provided with the exhaust port, and are connected to the fan unit 1 by the exhaust duct. Each room is individually ventilated. A ventilating fan 7 is installed in the bath and toilet 11 so that local exhaust that directly discharges air outside can be performed.

When ventilation is performed in the ventilation system having the above configuration, an air supply fan (not shown) of the fan unit 1 rotates, and outside air is sucked into the intake duct 2 as shown by an arrow A and is taken into the fan unit 1. The outside air for air supply introduced into the fan unit 1 is heat-exchanged with exhaust from the room, receives heat from the exhaust heated by heating in winter, and transfers heat to the exhaust cooled by cooling in summer. hand over. Since heat is recovered by exchanging heat in this way,
Energy saving can be achieved. Then, the heat-exchanged air is supplied from the lower part of the fan unit 1 to the corridor 12, which is a shared space, as shown by the arrow B. The corridor 12 is centrally supplied with air by the fan unit 1, and the air in the corridor 12 has a higher pressure than the air in the living room 10, the bath and the toilet 11, and enters the plurality of living rooms 10 connected to the corridor 12 as shown by arrow C. , And supply fresh air to the living room 10. Further, as shown by an arrow F, the supply air in the corridor 12 enters the bath and toilet 11 connected to the corridor 12, and supplies fresh air to the bath and toilet 11. Therefore, air contaminated by, for example, tobacco smoke in the living room 10 and humid air and odor of the bath and toilet 11 do not collect in the corridor.

On the other hand, the air in the room 10 is
Air is sucked from the exhaust port 5 provided on the ceiling of the fan unit 0 as shown by the arrow D, and is taken into the fan unit 1 through the exhaust duct 6. The living room 10 is exhausted from the exhaust port 5 and has a lower pressure than the corridor 12 and a negative pressure lower than the pressure of outdoor air. Since the air in the living room 10 has a negative pressure, the air in the warm and humid living room 10 does not penetrate into the walls of the building in winter, so that dew condensation does not occur in the walls.

The indoor exhaust air sent to the fan unit 1 exchanges heat with the outside air taken in from the outside, and
The air is discharged outside as shown by an arrow E through the exhaust duct 3.

The air in the bath and toilet 11 is locally exhausted by the ventilation fan 7 to be discharged directly to the outside. On the other hand, the air in the corridor 12 intensively supplied by the fan unit 1 has a higher pressure than the air in the bath and the toilet 11, and a part of the air in the corridor 12 flows into the bath and the toilet 11 as shown by an arrow F. . As shown by the arrow G, the air in the bath and the toilet 11 which is locally exhausted can be quickly exhausted without competing with the air flowing into the bath and the toilet 11.

The supply fan and the exhaust fan (not shown) are driven by one or more motors (not shown) in the fan unit 1, but may be smaller than those of a conventional ventilation system. Because, in the ventilation system of this embodiment, the air supply side supplies the air to the corridor 12 immediately below the fan unit 1 and there is almost no resistance, so that the pressure of the air supply overcomes the pressure of the air in the corridor. Any pressure may be used.
On the other hand, on the exhaust side, a relatively large resistance is generated in the exhaust from the exhaust port 5 of the living room 10 to the exhaust fan, but the exhaust fan only needs to have a pressure that can overcome the outdoor air pressure. Therefore, the load of the air supply fan and the load of the exhaust fan are balanced, so that the motor of the fan unit 1 can be downsized. For this reason, the production cost and operation cost of the ventilation system can be reduced.

[0027]

As is apparent from the above, according to the ventilation system of the first aspect of the present invention, the centralized air supply to the common space and the air supply to the room through the common space are performed. Since the individual exhaust is performed from the room without passing through the common space, the smell and moisture of each room do not collect in the common space.

According to the ventilation system of the first aspect of the present invention, the load between the air supply and the exhaust can be easily balanced, the motors for driving the air supply fan and the exhaust fan can be downsized, and the ventilation can be performed. System manufacturing and operating costs can be reduced.

Further, according to the ventilation system of the first aspect of the present invention, since each room is individually ventilated, the air in each room can be set to a lower pressure than that in the outdoors, so that the warm and humid air in the room in winter can be obtained. Can be prevented from penetrating into the walls of the building, and dew condensation inside the walls can be prevented.

According to the ventilation system of the first aspect of the present invention, each room is supplied with air from the common space and each room is individually exhausted, so that noise does not directly enter each room together with the supply air. You can keep each room quiet.

According to the ventilation system of the first aspect of the present invention, since the air in the common space has a higher pressure than the air in the bath and toilet, the air in the bath and toilet does not flow toward the common space. The air in the bath and toilet can be quickly exhausted without having to interact with the local exhaust fan in the bath and toilet.

According to the ventilation system of the second aspect,
Since the centralized air supply and the individual exhaust are performed by using a fan unit in which an air supply device and an exhaust device are integrally formed, a single power device can be installed in the ventilation system, and the ventilation system can be installed. Can be downsized.

According to the ventilation system of the third aspect,
Since the fan unit has a heat exchange function between the supply air and the exhaust air, the temperature of the intake air taken in from the outside can be brought close to the temperature of the exhaust air exhausted from the indoor, so that the air can be supplied to the room due to ventilation. Temperature change can be reduced, and energy consumption can be reduced.

[Brief description of the drawings]

FIG. 1 illustrates a ventilation system according to an embodiment of the present invention.

FIG. 2 illustrates a conventional ventilation system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fan unit 2 Air supply duct 3 Exhaust duct 4 Air supply port 5 Exhaust port 6 Exhaust duct 7 Ventilation fan 10 Living room 11 Bath and toilet 12 Corridor (shared space)

Claims (3)

[Claims] 1. A ventilation system for ventilating an entire building having a plurality of rooms (10, 11) and a common space (12), wherein a centralized air supply is provided to the common space (12). A ventilation system, wherein air is supplied to the rooms (10, 11) via (12), while individual exhaust is performed from the rooms (10, 11) without passing through the shared space (12). 2. The ventilation system according to claim 1, wherein the centralized air supply and the individual exhaust are performed using a fan unit (1) in which an air supply device and an exhaust device are integrally formed. Ventilation system. 3. The ventilation system according to claim 2, wherein the fan unit (1) has a heat exchange function between air supply and exhaust.