JP2022086040A - Ventilation air conditioning system - Google Patents

Abstract

To remove powder dust flowing in from outside air and powder dust resulting from a room to provide a clean indoor space with a ventilation air conditioning system used for a dwelling house.SOLUTION: A ventilation air conditioning system comprises: a ventilation device (heat exchange ventilation device 3) comprising an outside air introduction fan, an exhaust fan, an outside air passage, and an exhaust air passage, and an air conditioning device (air conditioner 2) that sends introduced outside air blown out from the outside air passage of the heat exchange ventilation device 3 to a room to be air-conditioned. The air conditioner 2 comprises a body 2a provided with a suction port and a discharge port, a dust collection filter 2b provided on the suction port side, and a blower fan 2c provided on the downstream side of the dust collection filter 2b. An air volume sent out by the blower fan 2c by connecting the discharge side of the outside air passage of the heat exchange ventilation device 3 and the suction port of the air conditioner 2 is larger than an air volume sent out by the outside air introduction fan.SELECTED DRAWING: Figure 1

Description

The present invention relates to a technique for purifying air with high dust collection efficiency by using a filter in a ventilation and air conditioning system used in a house or the like.

Conventionally, a blower device used in this type of ventilation / air conditioning system is known to block the surroundings in a filter accommodating portion and suppress leakage from a gap flow path (see, for example, Patent Document 1).

Hereinafter, the blower will be described with reference to FIG.

As shown in FIG. 4, the accommodating portion 101 contacts from the bottom surface of the filter 102 to the outer valley fold portion located outside the air suction hole 103 among the plurality of valley fold portions, and over almost the entire length of the outer valley fold portion. By doing so, a blocking means 104 for blocking the gap flow path between the bottom surface and the outer valley fold portion is provided.

As described above, conventionally, attempts have been made to eliminate the gap between the filter and its storage portion and suppress the air leaking from the periphery of the filter.

On the other hand, in recent years, highly airtight and highly insulated houses have become widespread, and along with this, first-class ventilation, that is, a method of mechanically exhausting air and mechanically introducing fresh air, has been recommended. In performing such first-class ventilation, it is efficient to perform ventilation for the entire building or for a plurality of rooms at once. As shown in FIG. 5, the ventilation air conditioning system as shown in Patent Document 2 is connected to the air conditioner 201, the return air duct 202 connected to the air conditioner 201, the air supply duct 203, and the return air duct 202. It has an exhaust fan 204 and an outside air duct 205.

The air conditioner 201 is provided with a filter 206 and a heat exchanger 207 inside, and purifies and adjusts the temperature of the air sucked into the air conditioner 201 and blows it out to the air supply duct 203. The return air duct 202 collects the indoor air in the air conditioning region as return air, and discharges a part of the air to the outside by the exhaust fan 204. The remaining return air is cooled or heated by the air conditioner 201 and supplied to the air conditioning region again via the air supply duct 203. The outside air duct 205 is connected to the suction port side of the air conditioner 201. The outside air introduced from the outside air duct 205 merges with the return air, is processed by the air conditioner 201, and is supplied to the room serving as the air conditioning region.

Japanese Unexamined Patent Publication No. 2019-196872 Japanese Unexamined Patent Publication No. 4-257650

In the conventional ventilation and air conditioning system as shown in Patent Document 2, when the outside air duct 205 is long, the desired amount of outside air introduced cannot be obtained, and outside air may enter through a gap in a living room or the like. That is, since the outside air is introduced into the living room without passing through the filter 206, dust and the like flow into the room.

Therefore, the present invention solves the above-mentioned conventional problems, and an object thereof is to secure an amount of outside air introduced and to provide a clean indoor space by removing dust flowing in from the outside air and dust caused in the room. ..

In order to achieve this object, the ventilation air-conditioning system according to the present invention includes a fan for introducing outside air, a fan for exhaust, a ventilation device provided with an outside air passage and an exhaust air passage, and the like.
The ventilation device is provided with an air conditioner that sends out the introduced outside air blown out from the outside air passage to the room to be air-conditioned.
The air conditioner includes a main body provided with a suction port and a discharge port, a dust collection filter provided on the suction port side, and a blower fan provided on the downstream side of the dust collection filter.
The discharge side of the outside air passage of the ventilation device and the suction port of the air conditioner are connected to each other.
The amount of air sent out by the fan for blowing air is larger than the amount of air sent out by the fan for introducing outside air, thereby achieving the intended purpose.

According to the present invention, a fan for introducing outside air is provided to realize first-class ventilation, and the air volume of the blower fan that blows air into the room is made larger than the air volume of the outside air introduction fan to ensure the introduced outside air. The filter is passed through the filter, and high dust collection efficiency can be obtained, and the effect of realizing a clean space can be obtained.

Schematic diagram of the ventilation air conditioning system according to the first embodiment of the present invention. Schematic diagram of a ventilation air conditioning system as a modification of the first embodiment of the present invention. Schematic diagram of the ventilation air conditioning system according to the second embodiment of the present invention. Filter installation diagram in a conventional ventilation system Schematic diagram of a conventional ventilation air conditioning system

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIG. 1, the ventilation air-conditioning system 1 of the present embodiment is used as a part of a whole-building air-conditioning system that ventilates and air-conditions one house in a single detached house or an apartment house such as a condominium. The ventilation air conditioning system 1 of the present embodiment includes an air conditioner 2 as an air conditioner and a heat exchange air device 3 as a ventilation device. The whole building air conditioning system may have a plurality of systems in one house.

The air conditioner 2 has a dust collecting filter 2b and a blower fan 2c inside a main body 2a provided with a suction port and a discharge port (not shown). The suction port of the air conditioner 2 is connected to the intake port 11a provided in the corridor 11 by a return air duct 12. The air conditioner 2 may be installed on a wall surface such as the ceiling of the corridor 11 and the intake port 11a and the suction port of the main body 2a may be directly connected without passing through the return air duct 12. In the main body 2a of the air conditioner 2, the dust collecting filter 2b is arranged on the upstream side of the blower fan 2c.

An air supply duct 15 is connected to the discharge port of the air conditioner 2. The air supply duct 15 is connected to a living room 13 (living room 13a, private room 13b) which is an air-conditioned target area through a branch in the middle.

The heat exchange air device 3 is located between an outside air passage having an outside air introduction fan and an exhaust air passage having an exhaust fan inside, and an outside air passing through the outside air passage and an exhaust passing through the exhaust air passage. It has a heat exchange element that exchanges heat. The outside air passage is connected to the outdoor suction port on the suction side and to the outside air duct 16 on the discharge side. The other end of the outside air duct 16 is connected to the suction port of the air conditioner 2. The air conditioner 2 supplies the purified air (SA) to the living room 13 by passing the return air RA from the room and the outside air OA from the outside through the dust collecting filter 2b. Although not shown, in the outside air passage of the heat exchange air device 3, an outside air introduction fan is provided on the downstream side of the heat exchange element.

The exhaust air passage of the heat exchange air device 3 is connected to the exhaust port 17a in the living room by an exhaust duct 17 on the suction side, and is connected to the exhaust port to the outside by a duct on the other end side. In the present embodiment, the exhaust port 17a is provided in a sanitary 14 such as a toilet. By discharging the air contaminated from the sanitary 14 to the outside by the exhaust fan of the heat exchange air device 3, the air in the living room 13 flows to the sanitary 14 side. On the other hand, the outside air OA is supplied into the living room 13 via the outside air duct 16, and the inside of the living room 13 is ventilated. In the exhaust air passage of the heat exchange air device 3, an exhaust fan is provided on the downstream side of the heat exchange element.

The air conditioner 2 connects the outside air duct 16 and the return air duct 12 to the suction port provided in the main body 2a. The suction ports of the main body 2a may be provided for the outside air duct 16 and the return air duct 12, respectively, and may be merged in the air conditioner 2. Alternatively, the main body 2a may be provided with only one suction port, and the outside air duct 16 and the return air duct 12 may join before reaching the suction port.

The operation of the ventilation air conditioning system 1 with the above configuration will be described.

When the blower fan 2c of the air conditioner 2 is operated, the return air RA and the outside air OA are sucked from the return air duct 12 through the suction port of the main body 2a. In the main body 2a, dust and the like are removed from the outside air OA and the return air RA by the dust collection filter 2b. The purified air is supplied to the living room 13 through the air supply duct 15. The intake port 11a to the return air duct 12 is provided in the corridor 11, but when air is sucked as the return air air RA from the intake port 11a of the corridor 11, the contaminated air in the living room 13 is on the corridor 11 side. It flows out. On the other hand, clean air is supplied to the living room 13 from the air supply duct 15, and the inside of the living room 13 is kept clean.

In the heat exchange air device 3, fresh outdoor air is sucked in by the operation of the outside air introduction fan and sent to the air conditioner 2 via the outside air air passage in the heat exchange air device 3 and the outside air duct 16. .. On the other hand, by operating the exhaust fan of the heat exchange air device 3, the exhaust air EA is sucked from the sanitary 14, and is discharged to the outside via the exhaust duct 17 and the exhaust air passage in the heat exchange air device 3. At this time, heat exchange between the outside air OA and the exhaust air EA is performed by the heat exchange element. That is, when the inside of the living room 13 is cooled (summer), the outside air OA is cooled in the heat exchange air device 3, and the exhaust air EA is warmed in the heat exchange air device 3. On the contrary, when the inside of the living room 13 is heated (winter), the outside air OA is heated in the heat exchange air device 3, and the exhaust air EA is cooled in the heat exchange air device 3.

Here, the most characteristic part in the present embodiment will be described.

As described above, in the outside air duct 16 and the air conditioner 2, that is, in the air passage through which the outside air passes, the dust collection filter 2b is arranged on the downstream side of the outside air introduction fan, and the air blower fan 2c is arranged on the downstream side of the dust collection filter 2b. Is placed. The air volume of the blower fan 2c of the air conditioner 2 is controlled to be larger than the air volume of the outside air introduction fan of the heat exchange air device 3. When the air is drawn in with a large air volume by the blower fan 2c on the most downstream side in this way, the outside air OA sent in with a small air volume on the upstream side passes through the dust collection filter 2b with less leakage. That is, since the air volume pushed in on the upstream side of the dust collecting filter 2b is smaller than the air volume drawn in on the downstream side, the upstream side of the dust collecting filter 2b becomes a negative pressure and flows out to the downstream side by bypassing the dust collecting filter 2b. "Leakage" is less likely to occur. Therefore, the outside air OA containing dust passes through the dust collection filter 2b, and the contained dust can be efficiently collected by the dust collection filter 2b, and clean air can be supplied to the room.

Further, in the ventilation air conditioning system 1 of the present embodiment, along with ventilation by the heat exchange air device 3, the air conditioner 2 circulates the air in the living room 13 via the corridor 11 to purify the air. The living room 13 to be air-conditioned is composed of a plurality of rooms (living room 13a and private room 13b in the case of the present embodiment). The ventilation air-conditioning system 1 of the present embodiment purifies the air by the air conditioner 2 for a plurality of living rooms 13, but when any one of the living rooms 13 is contaminated, it is promptly contaminated. The degree can be reduced.

In the ventilation air conditioning system 1 of the present embodiment, the air to be processed by the air conditioner 2 is the air conditioner 2 after the outside air duct 16 and the return air duct 12 are merged on the upstream side of the air conditioner 2. Is sucked into. That is, the difference between the air volume of the blower fan 2c and the outside air introduction fan circulates as the return air RA. On the other hand, the exhaust fan of the heat exchange air device 3 sucks in air corresponding to the amount of outside air introduced from the sanitary 14, and discharges it to the outside as exhaust air EA. The exhaust air EA is air exhausted from the space (corridor 11 or living room 13) adjacent to the sanitary 14 via the sanitary 14.

The return air RA is sucked in from the intake port 11a provided in the corridor 11 as shown in FIG. Then, the air in the living room 13 (living room 13a, private room 13b) flows out to the corridor 11 side from the louvers, gaps, etc. provided at the boundary with the corridor 11 by sucking the return air RA. In this way, the air conditioner 2 sucks the return air RA from any room of the living room 13. Then, the sucked return air RA is filtered by the dust collection filter 2b together with the outside air OA sucked by the outside air introduction fan, and then is supplied to the living room 13 again as the supply air SA.

In order to secure a predetermined ventilation volume in the living room 13, the heat exchange air device 3 introduces a predetermined outside air volume and exhausts the air to the outside with a predetermined air volume. Further, in order to secure a predetermined ventilation volume in the living room 13, the air conditioner 2 operates the blower fan 2c with a predetermined air volume, and replaces the air in the living room 13 with the return air RA and the supply air SA. At the same time, the outside air taken in by the heat exchange air device 3 is blown into the living room 13.

Here, consider the case where the air in the living room 13a becomes dirty (when there is a pollution source inside the living room 13a and dust is generated in the living room 13a). As described above, a predetermined air volume flows out from the living room 13a to the corridor 11, a part of the air is sucked into the air conditioner 2 as return air RA, and a part of the air is sucked into the heat exchange air device 3 via the sanitary 14. It is exhausted as exhaust air EA. On the other hand, similarly, a predetermined air volume flows out from the private room 13b to the corridor 11, a part of the air is sucked into the air conditioner 2 as return air RA, and a part of the air is sucked into the heat exchange air device 3 via the sanitary 14. It is sucked in and exhausted.

In this way, by operating the air conditioner 2, dirty air is discharged from the living room 13a as return air RA, and after being purified by the air conditioner 2, the purified air is supplied to the living room 13a. , The air in the living room 13a becomes clean. Further, the return air RA is larger than the amount of outside air introduced in the heat exchange air device 3. That is, the air conditioner 2 circulates and purifies more air than the ventilation volume required for the living room 13. Therefore, the air is replaced by the purified air faster than the replacement of the air by ventilation, and the air in the living room 13a is cleaned.

Although the case of dust that can be purified by the dust collection filter 2b has been described above as the dirt in the room, it is also effective in reducing the CO ₂ concentration that cannot be purified by the dust collection filter 2b.

Here, a case where people gather in the living room 13a and the CO ₂ concentration inside becomes high will be described. The return air RA sucked into the air conditioner 2 is collected from the living room 13a and the private room 13b via the corridor 11. That is, when the high CO ₂ concentration air from the living room 13a and the low CO ₂ concentration air from the private room 13b merge and are sucked into the air conditioner 2, the CO ₂ concentration is low. Further, since the return air RA from the living room 13 and the outside air OA from the heat exchange air device 3 merge with the air conditioner 2, the CO ₂ concentration is further lowered.

In this way, since the air having a high CO ₂ concentration and the air having a low CO ₂ concentration are mixed and supplied to the living room 13, the CO ₂ concentration is reduced in the room having a high CO ₂ concentration.

In addition to the CO ₂ concentration, it is also effective in reducing odors that are difficult to remove with the dust collecting filter 2b.

By using a deodorizing filter in addition to the dust collecting filter 2b, there is a greater effect in reducing the odor.

Further, as the dust collection filter 2b, it is preferable to use a HEPA filter having high dust collection efficiency.

Further, the air conditioner 2 may be provided with a temperature control function including a heat exchanger. In this case, the air conditioner 2 can adjust the supply air to a desired temperature and supply it to the living room 13 to cool or heat the living room 13. Further, the air conditioner 2 may further have a humidifying function or a sterilizing function.

(Modification example)
Further, as shown in FIG. 2, even if the air conditioner 2 does not have the temperature control function, the air conditioner 21 having the temperature control function may be provided somewhere in the living room 13. In FIG. 2, the living room 13a is provided with an air conditioner 21. As the air conditioner 21, a room air conditioner or the like is used. In this case, the living room 13a and the air conditioner 2 are directly connected to the booster fan 22 by the duct 23. According to such a configuration, the temperature-adjusted air and the return air RA merge to form the supply air SA. Therefore, the temperature-controlled air is supplied even in the private room 13b having no temperature control function.

(Embodiment 2)
Hereinafter, a second embodiment of the present invention will be described with reference to FIG. The parts having the same configuration as that of the first embodiment are designated by the same number, and detailed description thereof will be omitted.

As shown in FIG. 3, the difference from the first embodiment is that the living room 13a is provided with a dirt sensor 31 as a detector for detecting the degree of pollution in the room, and the air supply air outlet supplied to the living room 13a is blown out. A damper 32 as an air supply air volume regulator is provided in the living room. Further, the control unit (not shown) of the air conditioner 2 inputs the output of the dirt sensor 31 to control the damper 32 and the blower fan 2c.

The operation of the control unit will be described with the above configuration.

When the dirt sensor 31 detects dirt of a predetermined level or higher, the control unit moves the opening degree of the damper 32 in the "opening direction". The opening degree instructed to the damper 32 may be changed according to the detection value of the dirt sensor 31, or a predetermined predetermined opening degree may be instructed. Then, the control unit controls the blower fan 2c so as to send the air volume according to the opening degree of the damper 32.

The operation when such control is performed will be described. When the dirt sensor 31 provided in the living room 13a detects the dirt in the indoor air, the opening degree of the damper 32 becomes large, and the amount of air supplied to the living room 13a becomes large. In addition, the operating air volume of the blower fan 2c also increases. Since the amount of air supplied to the living room 13a is large, the amount of return air RA from the living room 13a is also large. That is, a large amount of dirty air (return air) is discharged from the living room 13a, and a large amount of clean air (supply air) is supplied. In this way, in the living room 13a, the dirty air is discharged, and the clean air is supplied and replaced, so that the air above the room air is swiftly performed.

As the dirt sensor 31, a device for detecting air quality such as a dust sensor for detecting suspended particles such as dust, a gas sensor for detecting an odorous substance, and a CO ₂ sensor for detecting a CO ₂ concentration can be used.

Further, the damper 32 does not have to be provided at the air outlet as long as it is in the path of the supply duct (air supply duct 15) to the living room 13a.

In the present embodiment, the dirt sensor 31 and the damper 32 are provided in only one of the plurality of living rooms 13, but the same configuration may be provided in the other rooms.

The ventilation air-conditioning system according to the present invention is used as one of the air-conditioning systems used for air-conditioning in the entire building because it enables the purification of indoor air with good response.

1 Ventilation air conditioning system 2 Air conditioner 2a Main body 2b Dust collection filter 2c Blower fan 3 Heat exchange air device 11 Corridor 11a Intake port 12 Return air duct 13 Living room 13a Living 13b Private room 14 Sanitary 15 Air supply duct 16 Outside air duct 17 Exhaust duct 17a Exhaust port 21 Air conditioner 22 Booster fan 23 Duct 31 Sensor 32 Damper EA Exhaust air OA Outside air RA Return air air SA Supply air air 101 Storage part 102 Filter 103 Air suction hole 104 Blocking means 201 Air conditioner 202 Return air duct 203 Air supply duct 204 Exhaust fan 205 Outside air duct 206 Filter 207 Heat exchanger

The present invention relates to a technique for purifying air with high dust collection efficiency by using a filter in a ventilation and air conditioning system used in a house or the like.

Conventionally, a blower device used in this type of ventilation / air conditioning system is known to block the surroundings in a filter accommodating portion and suppress leakage from a gap flow path (see, for example, Patent Document 1).

Hereinafter, the blower will be described with reference to FIG.

As shown in FIG. 4, the accommodating portion 101 contacts from the bottom surface of the filter 102 to the outer valley fold portion located outside the air suction hole 103 among the plurality of valley fold portions, and over almost the entire length of the outer valley fold portion. By doing so, a blocking means 104 for blocking the gap flow path between the bottom surface and the outer valley fold portion is provided.

As described above, conventionally, attempts have been made to eliminate the gap between the filter and its storage portion and suppress the air leaking from the periphery of the filter.

On the other hand, in recent years, highly airtight and highly insulated houses have become widespread, and along with this, first-class ventilation, that is, a method of mechanically exhausting air and mechanically introducing fresh air, has been recommended. In performing such first-class ventilation, it is efficient to perform ventilation for the entire building or for a plurality of rooms at once. As shown in FIG. 5, the ventilation air conditioning system as shown in Patent Document 2 is connected to the air conditioner 201, the return air duct 202 connected to the air conditioner 201, the air supply duct 203, and the return air duct 202. It has an exhaust fan 204 and an outside air duct 205.

The air conditioner 201 is provided with a filter 206 and a heat exchanger 207 inside, and purifies and adjusts the temperature of the air sucked into the air conditioner 201 and blows it out to the air supply duct 203. The return air duct 202 collects the indoor air in the air conditioning region as return air, and discharges a part of the air to the outside by the exhaust fan 204. The remaining return air is cooled or heated by the air conditioner 201 and supplied to the air conditioning region again via the air supply duct 203. The outside air duct 205 is connected to the suction port side of the air conditioner 201. The outside air introduced from the outside air duct 205 merges with the return air, is processed by the air conditioner 201, and is supplied to the room serving as the air conditioning region.

Japanese Unexamined Patent Publication No. 2019-196872 Japanese Unexamined Patent Publication No. 4-257650

In the conventional ventilation and air conditioning system as shown in Patent Document 2, when the outside air duct 205 is long, the desired amount of outside air introduced cannot be obtained, and outside air may enter through a gap in a living room or the like. That is, since the outside air is introduced into the living room without passing through the filter 206, dust and the like flow into the room.

Therefore, the present invention solves the above-mentioned conventional problems, and an object thereof is to secure an amount of outside air introduced and to provide a clean indoor space by removing dust flowing in from the outside air and dust caused in the room. ..

In order to achieve this object, the ventilation air-conditioning system according to the present invention includes a fan for introducing outside air, a fan for exhaust, a ventilation device provided with an outside air passage and an exhaust air passage, and the like.
The ventilation device is provided with an air conditioner that sends out the introduced outside air blown out from the outside air passage to a plurality of rooms to be air-conditioned.
The air conditioner includes a main body provided with a suction port and a discharge port, a dust collection filter provided on the suction port side, and a blower fan provided on the downstream side of the dust collection filter.
The discharge side of the outside air passage of the ventilation device and the suction port of the air conditioner are connected to each other.
The air volume sent out by the blower fan is larger than the air volume sent out by the outside air introduction fan, and the return air from at least a part of the rooms among the plurality of rooms is sucked into the air conditioner to introduce the air conditioner. It is mixed with outside air, passed through the dust collecting filter, and supplied to a plurality of the rooms, thereby achieving the intended purpose.

According to the present invention, a fan for introducing outside air is provided to realize first-class ventilation, and the air volume of the blower fan that blows air into the room is made larger than the air volume of the outside air introduction fan to ensure the introduced outside air. The filter is passed through the filter, and high dust collection efficiency can be obtained, and the effect of realizing a clean space can be obtained. In addition, after sucking the return air from at least some of the multiple rooms into the air conditioner, it passes through the dust collection filter and is supplied to the multiple rooms, so the amount of exhaust air due to outdoor ventilation is suppressed. While purifying the indoor air, it is possible.

Schematic diagram of the ventilation air conditioning system according to the first embodiment of the present invention. Schematic diagram of a ventilation air conditioning system as a modification of the first embodiment of the present invention. Schematic diagram of the ventilation air conditioning system according to the second embodiment of the present invention. Filter installation diagram in a conventional ventilation system Schematic diagram of a conventional ventilation air conditioning system

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIG. 1, the ventilation air-conditioning system 1 of the present embodiment is used as a part of a whole-building air-conditioning system that ventilates and air-conditions one house in a single detached house or an apartment house such as a condominium. The ventilation air conditioning system 1 of the present embodiment includes an air conditioner 2 as an air conditioner and a heat exchange air device 3 as a ventilation device. The whole building air conditioning system may have a plurality of systems in one house.

The air conditioner 2 has a dust collecting filter 2b and a blower fan 2c inside a main body 2a provided with a suction port and a discharge port (not shown). The suction port of the air conditioner 2 is connected to the intake port 11a provided in the corridor 11 by a return air duct 12. The air conditioner 2 may be installed on a wall surface such as the ceiling of the corridor 11 and the intake port 11a and the suction port of the main body 2a may be directly connected without passing through the return air duct 12. In the main body 2a of the air conditioner 2, the dust collecting filter 2b is arranged on the upstream side of the blower fan 2c.

An air supply duct 15 is connected to the discharge port of the air conditioner 2. The air supply duct 15 is connected to a living room 13 (living room 13a, private room 13b) which is an air-conditioned target area through a branch in the middle.

The heat exchange air device 3 is located between an outside air passage having an outside air introduction fan and an exhaust air passage having an exhaust fan inside, and an outside air passing through the outside air passage and an exhaust passing through the exhaust air passage. It has a heat exchange element that exchanges heat. The outside air passage is connected to the outdoor suction port on the suction side and to the outside air duct 16 on the discharge side. The other end of the outside air duct 16 is connected to the suction port of the air conditioner 2. The air conditioner 2 supplies the purified air (SA) to the living room 13 by passing the return air RA from the room and the outside air OA from the outside through the dust collecting filter 2b. Although not shown, in the outside air passage of the heat exchange air device 3, an outside air introduction fan is provided on the downstream side of the heat exchange element.

The exhaust air passage of the heat exchange air device 3 is connected to the exhaust port 17a in the living room by an exhaust duct 17 on the suction side, and is connected to the exhaust port to the outside by a duct on the other end side. In the present embodiment, the exhaust port 17a is provided in a sanitary 14 such as a toilet. By discharging the air contaminated from the sanitary 14 to the outside by the exhaust fan of the heat exchange air device 3, the air in the living room 13 flows to the sanitary 14 side. On the other hand, the outside air OA is supplied into the living room 13 via the outside air duct 16, and the inside of the living room 13 is ventilated. In the exhaust air passage of the heat exchange air device 3, an exhaust fan is provided on the downstream side of the heat exchange element.

The air conditioner 2 connects the outside air duct 16 and the return air duct 12 to the suction port provided in the main body 2a. The suction ports of the main body 2a may be provided for the outside air duct 16 and the return air duct 12, respectively, and may be merged in the air conditioner 2. Alternatively, the main body 2a may be provided with only one suction port, and the outside air duct 16 and the return air duct 12 may join before reaching the suction port.

The operation of the ventilation air conditioning system 1 with the above configuration will be described.

When the blower fan 2c of the air conditioner 2 is operated, the return air RA and the outside air OA are sucked from the return air duct 12 through the suction port of the main body 2a. In the main body 2a, dust and the like are removed from the outside air OA and the return air RA by the dust collection filter 2b. The purified air is supplied to the living room 13 through the air supply duct 15. The intake port 11a to the return air duct 12 is provided in the corridor 11, but when air is sucked as the return air air RA from the intake port 11a of the corridor 11, the contaminated air in the living room 13 is on the corridor 11 side. It flows out. On the other hand, clean air is supplied to the living room 13 from the air supply duct 15, and the inside of the living room 13 is kept clean.

In the heat exchange air device 3, fresh outdoor air is sucked in by the operation of the outside air introduction fan and sent to the air conditioner 2 via the outside air air passage in the heat exchange air device 3 and the outside air duct 16. .. On the other hand, by operating the exhaust fan of the heat exchange air device 3, the exhaust air EA is sucked from the sanitary 14, and is discharged to the outside via the exhaust duct 17 and the exhaust air passage in the heat exchange air device 3. At this time, heat exchange between the outside air OA and the exhaust air EA is performed by the heat exchange element. That is, when the inside of the living room 13 is cooled (summer), the outside air OA is cooled in the heat exchange air device 3, and the exhaust air EA is warmed in the heat exchange air device 3. On the contrary, when the inside of the living room 13 is heated (winter), the outside air OA is heated in the heat exchange air device 3, and the exhaust air EA is cooled in the heat exchange air device 3.

Here, the most characteristic part in the present embodiment will be described.

As described above, in the outside air duct 16 and the air conditioner 2, that is, in the air passage through which the outside air passes, the dust collection filter 2b is arranged on the downstream side of the outside air introduction fan, and the air blower fan 2c is arranged on the downstream side of the dust collection filter 2b. Is placed. The air volume of the blower fan 2c of the air conditioner 2 is controlled to be larger than the air volume of the outside air introduction fan of the heat exchange air device 3. When the air is drawn in with a large air volume by the blower fan 2c on the most downstream side in this way, the outside air OA sent in with a small air volume on the upstream side passes through the dust collection filter 2b with less leakage. That is, since the air volume pushed in on the upstream side of the dust collecting filter 2b is smaller than the air volume drawn in on the downstream side, the upstream side of the dust collecting filter 2b becomes a negative pressure and flows out to the downstream side by bypassing the dust collecting filter 2b. "Leakage" is less likely to occur. Therefore, the outside air OA containing dust passes through the dust collection filter 2b, and the contained dust can be efficiently collected by the dust collection filter 2b, and clean air can be supplied to the room.

Further, in the ventilation air conditioning system 1 of the present embodiment, along with ventilation by the heat exchange air device 3, the air conditioner 2 circulates the air in the living room 13 via the corridor 11 to purify the air.
The living room 13 to be air-conditioned is composed of a plurality of rooms (living room 13a and private room 13b in the case of the present embodiment). The ventilation air-conditioning system 1 of the present embodiment purifies the air by the air conditioner 2 for a plurality of living rooms 13, but when any one of the living rooms 13 is contaminated, it is promptly contaminated. The degree can be reduced.

In the ventilation air conditioning system 1 of the present embodiment, the air to be processed by the air conditioner 2 is the air conditioner 2 after the outside air duct 16 and the return air duct 12 are merged on the upstream side of the air conditioner 2. Is sucked into. That is, the difference between the air volume of the blower fan 2c and the outside air introduction fan circulates as the return air RA. On the other hand, the exhaust fan of the heat exchange air device 3 sucks in air corresponding to the amount of outside air introduced from the sanitary 14, and discharges it to the outside as exhaust air EA. The exhaust air EA is air exhausted from the space (corridor 11 or living room 13) adjacent to the sanitary 14 via the sanitary 14.

The return air RA is sucked in from the intake port 11a provided in the corridor 11 as shown in FIG. Then, the air in the living room 13 (living room 13a, private room 13b) flows out to the corridor 11 side from the louvers, gaps, etc. provided at the boundary with the corridor 11 by sucking the return air RA. In this way, the air conditioner 2 sucks the return air RA from any room of the living room 13. Then, the sucked return air RA is filtered by the dust collection filter 2b together with the outside air OA sucked by the outside air introduction fan, and then is supplied to the living room 13 again as the supply air SA.

In order to secure a predetermined ventilation volume in the living room 13, the heat exchange air device 3 introduces a predetermined outside air volume and exhausts the air to the outside with a predetermined air volume. Further, in order to secure a predetermined ventilation volume in the living room 13, the air conditioner 2 operates the blower fan 2c with a predetermined air volume, and replaces the air in the living room 13 with the return air RA and the supply air SA. At the same time, the outside air taken in by the heat exchange air device 3 is blown into the living room 13.

Here, consider the case where the air in the living room 13a becomes dirty (when there is a pollution source inside the living room 13a and dust is generated in the living room 13a). As described above, a predetermined air volume flows out from the living room 13a to the corridor 11, a part of the air is sucked into the air conditioner 2 as return air RA, and a part of the air is sucked into the heat exchange air device 3 via the sanitary 14. It is exhausted as exhaust air EA. On the other hand, similarly, a predetermined air volume flows out from the private room 13b to the corridor 11, a part of the air is sucked into the air conditioner 2 as return air RA, and a part of the air is sucked into the heat exchange air device 3 via the sanitary 14. It is sucked in and exhausted.

In this way, by operating the air conditioner 2, dirty air is discharged from the living room 13a as return air RA, and after being purified by the air conditioner 2, the purified air is supplied to the living room 13a. , The air in the living room 13a becomes clean. Further, the return air RA is larger than the amount of outside air introduced in the heat exchange air device 3. That is, the air conditioner 2 circulates and purifies more air than the ventilation volume required for the living room 13. Therefore, the air is replaced by the purified air faster than the replacement of the air by ventilation, and the air in the living room 13a is cleaned.

Although the case of dust that can be purified by the dust collection filter 2b has been described above as the dirt in the room, it is also effective in reducing the CO ₂ concentration that cannot be purified by the dust collection filter 2b.

Here, a case where people gather in the living room 13a and the CO ₂ concentration inside becomes high will be described. The return air RA sucked into the air conditioner 2 is collected from the living room 13a and the private room 13b via the corridor 11. That is, when the high CO ₂ concentration air from the living room 13a and the low CO ₂ concentration air from the private room 13b merge and are sucked into the air conditioner 2, the CO ₂ concentration is low. Further, since the return air RA from the living room 13 and the outside air OA from the heat exchange air device 3 merge with the air conditioner 2, the CO ₂ concentration is further lowered.

In this way, since the air having a high CO ₂ concentration and the air having a low CO ₂ concentration are mixed and supplied to the living room 13, the CO ₂ concentration is reduced in the room having a high CO ₂ concentration.

In addition to the CO ₂ concentration, it is also effective in reducing odors that are difficult to remove with the dust collecting filter 2b.

By using a deodorizing filter in addition to the dust collecting filter 2b, there is a greater effect in reducing the odor.

Further, as the dust collection filter 2b, it is preferable to use a HEPA filter having high dust collection efficiency.

Further, the air conditioner 2 may be provided with a temperature control function including a heat exchanger. In this case, the air conditioner 2 can adjust the supply air to a desired temperature and supply it to the living room 13 to cool or heat the living room 13. Further, the air conditioner 2 may further have a humidifying function or a sterilizing function.

(Modification example)
Further, as shown in FIG. 2, even if the air conditioner 2 does not have the temperature control function, the air conditioner 21 having the temperature control function may be provided somewhere in the living room 13. In FIG. 2, the living room 13a is provided with an air conditioner 21. As the air conditioner 21, a room air conditioner or the like is used. In this case, the living room 13a and the air conditioner 2 are directly connected to the booster fan 22 by the duct 23. According to such a configuration, the temperature-adjusted air and the return air RA merge to form the supply air SA. Therefore, the temperature-controlled air is supplied even in the private room 13b having no temperature control function.

(Embodiment 2)
Hereinafter, a second embodiment of the present invention will be described with reference to FIG. The parts having the same configuration as that of the first embodiment are designated by the same number, and detailed description thereof will be omitted.

As shown in FIG. 3, the difference from the first embodiment is that the living room 13a is provided with a dirt sensor 31 as a detector for detecting the degree of pollution in the room, and the air supply air outlet supplied to the living room 13a is blown out. A damper 32 as an air supply air volume regulator is provided in the living room. Further, the control unit (not shown) of the air conditioner 2 inputs the output of the dirt sensor 31 to control the damper 32 and the blower fan 2c.

The operation of the control unit will be described with the above configuration.

When the dirt sensor 31 detects dirt of a predetermined level or higher, the control unit moves the opening degree of the damper 32 in the "opening direction". The opening degree instructed to the damper 32 may be changed according to the detection value of the dirt sensor 31, or a predetermined predetermined opening degree may be instructed. Then, the control unit controls the blower fan 2c so as to send the air volume according to the opening degree of the damper 32.

The operation when such control is performed will be described. When the dirt sensor 31 provided in the living room 13a detects the dirt in the indoor air, the opening degree of the damper 32 becomes large, and the amount of air supplied to the living room 13a becomes large. In addition, the operating air volume of the blower fan 2c also increases. Since the amount of air supplied to the living room 13a is large, the amount of return air RA from the living room 13a is also large. That is, a large amount of dirty air (return air) is discharged from the living room 13a, and a large amount of clean air (supply air) is supplied. In this way, in the living room 13a, the dirty air is discharged, and the clean air is supplied and replaced, so that the air above the room air is swiftly performed.

As the dirt sensor 31, a device for detecting air quality such as a dust sensor for detecting suspended particles such as dust, a gas sensor for detecting an odorous substance, and a CO ₂ sensor for detecting a CO ₂ concentration can be used.

Further, the damper 32 does not have to be provided at the air outlet as long as it is in the path of the supply duct (air supply duct 15) to the living room 13a.

In the present embodiment, the dirt sensor 31 and the damper 32 are provided in only one of the plurality of living rooms 13, but the same configuration may be provided in the other rooms.

The ventilation air-conditioning system according to the present invention is used as one of the air-conditioning systems used for air-conditioning in the entire building because it enables the purification of indoor air with good response.

1 Ventilation air conditioning system 2 Air conditioner 2a Main body 2b Dust collection filter 2c Blower fan 3 Heat exchange air device 11 Corridor 11a Intake port 12 Return air duct 13 Living room 13a Living 13b Private room 14 Sanitary 15 Air supply duct 16 Outside air duct 17 Exhaust duct 17a Exhaust port 21 Air conditioner 22 Booster fan 23 Duct 31 Sensor 32 Damper EA Exhaust air OA Outside air RA Return air air SA Supply air air 101 Storage part 102 Filter 103 Air suction hole 104 Blocking means 201 Air conditioner 202 Return air duct 203 Air supply duct 204 Exhaust fan 205 Outside air duct 206 Filter 207 Heat exchanger

In order to achieve this object, the ventilation air-conditioning system according to the present invention blows out from an outside air introduction fan, an exhaust fan, a ventilation device provided with an outside air passage and an exhaust air passage, and an outside air passage of the ventilation device. It is equipped with an air -conditioning device that sends out the introduced outside air to multiple rooms to be air-conditioned . Equipped with a fan for ventilation provided in the above, the discharge side of the outside air passage of the ventilation device and the suction port of the air conditioner are connected by an outside air duct, and the air conditioner does not have a temperature control function and the amount of air sent out by the fan for ventilation. However , by controlling the ventilation fan so that it is always larger than the air volume sent out by the outside air introduction fan, the outside air duct is made negative pressure, and the return air from at least some of the above-mentioned rooms is air-conditioned. It is sucked into the air, mixed with the introduced outside air, passed through a dust collection filter, and supplied to a plurality of rooms, thereby achieving the intended purpose.

Claims (11)

A fan for introducing outside air, a fan for exhaust, a ventilation device equipped with an outside air passage and an exhaust air passage,
The ventilation device is provided with an air conditioner that sends out the introduced outside air blown out from the outside air passage to the room to be air-conditioned.
The air conditioner includes a main body provided with a suction port and a discharge port, a dust collection filter provided on the suction port side, and a blower fan provided on the downstream side of the dust collection filter.
The discharge side of the outside air passage of the ventilation device and the suction port of the air conditioner are connected to each other.
A ventilation and air conditioning system characterized in that the amount of air sent out by the fan for blowing air is larger than the amount of air sent out by the fan for introducing outside air. Inhale as return air from the room,
A part of the return air is sucked into the ventilation device as exhaust air and discharged from the exhaust air passage.
The ventilation air-conditioning system according to claim 1, wherein the rest of the return air is sucked into the air-conditioning device, mixed with the introduced outside air, passed through the dust collection filter, and supplied to the room. The room is composed of multiple rooms.
Inhale as return air from all of the multiple rooms,
A part of the return air is sucked into the ventilation device as exhaust air and discharged from the exhaust air passage.
The ventilation air-conditioning system according to claim 1, wherein the rest of the return air is sucked into the air-conditioning device, mixed with the introduced outside air, passed through the dust collection filter, and supplied to all of the plurality of rooms. A detector that detects the degree of air pollution in at least one of the plurality of rooms,
A control unit that inputs the output of the detector and controls the blower fan is provided.
The control unit
When the degree of pollution detected by the detector exceeds a predetermined value, the room that is the source of pollution is identified.
The ventilation and air conditioning system according to claim 3, wherein at least the air in the room, which is a pollution source, is sucked in as return air and then supplied to all of the plurality of rooms. An air supply air passage that supplies purified clean air to each of the multiple rooms,
It has a supply air volume regulator that regulates the amount of clean air supplied to each of the plurality of rooms.
The control unit
When the degree of pollution detected by the detector exceeds a predetermined value, the room that is the source of pollution is identified.
The amount of air supply air supplied to the room as a pollution source is controlled according to the degree of pollution of the pollution source by the air supply air volume regulator corresponding to the room as a pollution source.
The ventilation air conditioning system according to claim 4, wherein the air supply air volume supplied to the room other than the pollution source is controlled to a predetermined value set in advance by the air supply air volume regulator corresponding to the room other than the pollution source. The ventilation and air conditioning system according to claim 5, wherein the outside air introduction fan and the exhaust fan are operated with a predetermined ventilation volume for the entire plurality of rooms. The ventilation and air conditioning system according to any one of claims 4 to 6, wherein a CO ₂ sensor is used as the detector. The ventilation and air conditioning system according to any one of claims 4 to 6, wherein a dust sensor for detecting dust or the like is used as the detector. The ventilation and air conditioning system according to any one of claims 4 to 6, wherein a gas sensor for detecting the concentration of an odorous substance is used as the detector. The ventilation and air conditioning system according to any one of claims 1 to 9, wherein a HEPA filter is used as the dust collection filter. The ventilation air-conditioning system according to any one of claims 1 to 10, wherein the air-conditioning apparatus has a function of adjusting the temperature of blown air.

Images